JP2016127324A - Electronic apparatus and recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus and a recording method capable of efficiently using storage medium.SOLUTION: An electronic apparatus includes: a first reception section that receives a first image signal constituting a program; a second reception section that receives a second image signal which is used for improving the image quality of the first image signal; and a control unit that controls whether to simultaneously record the first image signal and the second image signal corresponding to the first image signal or to record the first image signal only.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an electronic apparatus and a recording method.

  In recent years, the introduction of so-called 4K broadcasting (3840 × 2160) and 8K broadcasting (7680 × 4320), which has a resolution four times or eight times the horizontal and vertical resolution of current HD (High Definition) (2K) broadcasting, has been introduced in Japan. It is also being considered for satellite broadcasting.

  However, if 4K broadcasting or 8K broadcasting is to be introduced while maintaining the current broadcasting, it is necessary to newly secure a large capacity broadcasting band. Further, when the current broadcaster provides a 4K / 8K broadcast service, the video resolution and the encoding method are different, so there is a concern that the burden of program production / service operation costs will increase.

  Therefore, for example, the second edition of the HEVC (High Efficiency Video Coding) standard (ISO / IEC23008-2), which is the latest video coding standard standardized in July 2014 by the Moving Picture Experts group (MPEG) Application of SHVC (Scalable High Efficiency Video Coding) (scalable HEVC), which is specified in the above, is being studied. Specifically, based on the MPEG-2 Video video encoding system for HD signals, this decoded image is also an SHVC system that is expanded and used for HEVC encoding of 4K / 8K signals as reference images.

  When adding, expanding, and introducing such new services, there is a concern that some of the existing receivers may cause unexpected operations, and it is necessary to introduce additional expansion services while complying with the current broadcast specifications. Can be difficult.

  In addition, when recording SHVC content in a receiver compatible with 4K / 8K broadcasting, both the reference video signal and the extended video signal of SHVC are stored in the storage as they are, so that the recorded content (recorded program) can be reproduced again. High-quality video can be displayed. On the other hand, the storage capacity required to store both the reference video signal and the extended video signal increases, and the recordable time of content (program) in the same storage can be shortened.

JP 2006-295913 A

  A problem to be solved by an embodiment of the present invention is to provide an electronic device and a recording method that can efficiently use a storage medium.

  The electronic apparatus according to the present embodiment receives a first video signal that constitutes a program, a first receiving unit that receives the first video signal, and a second video signal that is used to improve the image quality of the first video signal. A second receiver, and a controller that controls whether the first video signal and the second video signal corresponding to the first video signal are recorded simultaneously or only the first video signal is recorded. Prepare.

FIG. 1 is a schematic diagram illustrating an example of a transmission / reception system according to the first embodiment. FIG. 2 is a block diagram illustrating an example of the receiver according to the first embodiment. FIG. 3 is a block diagram illustrating an example of the extended information acquisition unit according to the first embodiment. FIG. 4 is a schematic diagram illustrating an example of storage data of the storage medium according to the first embodiment. FIG. 5 is a flowchart illustrating the recording operation of the receiver according to the first embodiment. FIG. 6A is a diagram illustrating an example of a program guide. FIG. 6B is a diagram illustrating an example of a recording dialog according to the first embodiment. FIG. 6C is a diagram illustrating an example of a recording dialog according to the first embodiment. FIG. 7A is a diagram illustrating a data structure of a newly defined digital copy control descriptor according to the first modification of the first embodiment, and FIG. 7B illustrates a modification according to the first embodiment. It is a figure which shows 1 digital copy control information. FIG. 8 is a block diagram illustrating an example of a receiver according to the second embodiment. FIG. 9 is a flowchart showing the recorded program deletion operation of the receiver of the second embodiment. FIG. 10A is a diagram illustrating an example of a recording list according to the second embodiment. FIG. 10B is a diagram illustrating an example of a deletion dialog according to the second embodiment. FIG. 10C is a diagram illustrating an example of a deletion dialog according to the second embodiment. FIG. 11 is a diagram illustrating an example of a remote controller according to the second embodiment. FIG. 12 is a diagram illustrating an example of a recording list according to the second embodiment. FIG. 13 is a diagram illustrating an example of a remote controller according to the second embodiment. FIG. 14 is a schematic diagram illustrating an example of a transmission / reception system according to the second modification.

Hereinafter, embodiments will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a schematic diagram illustrating an example of a transmission / reception system 1 according to the first embodiment.
The transmission / reception system 1 according to the present embodiment includes a transmitter (transmission device) 3 and a receiver (reception device, electronic device, first receiver) 5. In the transmission / reception system 1, the transmitter 3 and the receiver 5 are connected by wired and / or wireless broadcast and communication transmission paths, respectively. In the transmission / reception system 1, the transmitter 3 can distribute content using, for example, a broadcast wave or an IP network as a medium. Here, the content is, for example, a television program (broadcast program), a satellite broadcast program, distribution content, a video, an image, music, a program, and the like. For convenience of explanation, the content will be mainly described as a television program (hereinafter simply referred to as a program). Note that the video signal may be accompanied by other information. For example, the video signal includes an audio signal and various information related to various contents.

  The transmitter 3 is a transmission facility or the like provided in a broadcasting station or the like, and the receiver 5 is a recorder, a computer main body, a server, or the like. When the receiver 5 is a recorder or the like, the receiver 5 is connected to a display device (display, first display device) 150 and can display a reproduced video or the like on the display device 150. When the receiver 5 is a television broadcast receiver, the display device 150 may be configured as a television (TV) receiver integrally with the receiver 5. In the present embodiment, the receiver 5 is a 2K (2K1K), 4K (4K2K), and / or 8K (8K4K) compatible TV. Hereinafter, for convenience of explanation, the receiver 5 is described as a 2K / 4K compatible TV.

  The transmitter 3 attaches various information to the input base video (base video signal), generates content, and transmits it as a video signal. The transmitter 3 transmits a signal output to each transmission path by a transmission method corresponding to each conversion method. Here, the transmission method is various means (forms) related to signal transmission including a broadcasting method, an encoding method, a transmission route, a transmission method, a transmission band, a line type, and the like.

  The base video is a high-quality video captured by an imaging device such as a camera. The high-quality video is, for example, 4K (horizontal resolution 3840 / vertical resolution 2160 (or 1440), frame rate (video frequency) 60 Hz), or 8K (horizontal resolution 7680 / vertical resolution 4320, frame rate 120 Hz). ) It is a video with higher image quality than a video of 2K (the number of pixels in the horizontal direction is 1920, the number of pixels in the vertical direction is 1080, and the frame rate is 60 Hz).

  In the present embodiment, the transmitter 3 is configured by applying an SHVC (Scalable High Efficiency Video Coding) encoding method to HD (High Definition) broadcasting. As shown in FIG. 1, in SHVC broadcasting, the transmitter 3 converts content into a plurality of video signals, for example, a reference video signal (first video signal) and an extended video signal (second video signal). Convert. The transmitter 3 transmits these video signals and audio signals corresponding to these video signals through different transmission paths. For example, as illustrated in FIG. 1, the transmitter 3 transmits a reference video signal, an extended video signal, and an audio signal by using different transmission paths and / or different transmission methods among a plurality of transmission paths included in the transmission path 101. To do. The transmitter 3 may transmit the reference video signal, the extended video signal, and the audio signal using the same transmission path and / or the same transmission method. The transmission path 101 is an aggregate of a plurality of transmission paths. The transmission path 101 may be any one or more transmission paths for transmitting signals, and includes a broadcast wave band, an IP network line, and the like.

  The reference video signal is a signal that constitutes a reference video (first video) that is content, and may be, for example, a video signal encoded by MPEG2 that is broadcast on the current digital terrestrial broadcast wave, It may be a video signal different from the video signal broadcast on the current digital terrestrial broadcast wave.

  The extended video signal is used to improve the image quality of the reference video signal. The extended video signal is a signal for expanding the reference video signal to a high-quality video (high-quality video (second video)) with reference to the corresponding standard video signal.

The operation of the transmitter 3 according to this embodiment will be described below.
The transmitter 3 includes a reference video signal (first video signal) obtained by down-converting and encoding a high-quality video that is a base video, and an extended video signal (second video) that is encoded with reference to the reference video signal. Signal). The transmitter 3 modulates the reference video signal and the extended video signal converted by a predetermined conversion method, and outputs them to any transmission path included in the transmission path 101.

  The transmitter 3 generates a reference video signal by an encoder of the MPEG-2 encoding method, and generates an extended video signal by an encoder (SHVC encoder) of the SHVC encoding method (scalable encoding method). In the SHVC encoding method, the SHVC encoder can perform any one of inter prediction (motion compensation prediction), intra prediction (intra-screen prediction), and inter-layer prediction (inter-image prediction) for generating a predicted image. For example, the transmitter 3 generates a reference video (image) signal (HD (2K) video signal (first video signal)) and an extended video signal (complementary video of HD video for 4K video) from the input base video. A second video signal)). In addition to the MPEG2-TS, the multiplexing method of the extended video signal may be another multiplexing method different from the reference video signal such as MMT, MPRG-DASH.

  The reference video signal output from the transmitter 3 includes PSI / SI (first PSI / SI), ECM (Entitlement Control Message) / EMM (Entitlement Management Message) (first ECM / EMM), time information, and the like. It has. The extended video signal includes PSI / SI (second PSI / SI), ECM / EMM (second ECM / EMM), time information, and the like. Here, the first PSI / SI and the second PSI / SI are information related to the same content (or base video). The second PSI / SI is an ES (Elementary Stream) (descriptor (first selection) for referencing components) of signals transmitted in different transmission paths and / or different transmission methods in the PMT. The second PSI / SI includes, for example, a descriptor (second tuning control information) that newly associates a reference video signal and an extended video signal with the NIT. The second channel selection control information enables identification of signals transmitted in different transmission paths and different transmission schemes, and allows reference to signals transmitted in different transmission paths and different transmission schemes. To do.

Here, the ECM is common information including information related to the control of the receiver 5, and the EMM is individual information including information for decrypting the personal contract information and the common information.
PSI and SI are PAT (Program Association Table), PMT (Program Map Table), NIT (Network Information Table), CAT (Conditional Access Table) and EIT. (Event Information Table). PAT is information for managing programs included in a stream. The PMT is information for managing data such as audio / video (A / V) constituting the content. NIT is information for managing network-related settings, and includes information related to a transmitting network such as a channel number, a modulation scheme, and a guard interval. CAT is management information for pay broadcasting. For convenience of explanation below, SI may be expressed as PSI as a part of PSI.

  The time information includes, for example, PTS (Presentation Time Stamp), DTS (Decoding Time Stamp), system time reference value (System Time Clock: STC), SCR (System Clock Reference), and the like.

Hereinafter, the receiver 5 will be described in detail with reference to the drawings.
FIG. 2 is a block diagram illustrating an example of the receiver 5 according to the first embodiment.
The receiver 5 of this embodiment includes an antenna unit 104, an external input terminal 105, external output terminals 106 and 107, an input unit 111, a signal processing unit 113, and a system controller (system control unit (control unit)). 114, OSD signal generation unit 115, graphic processing unit 116, video processing unit 117, audio processing unit 118, audio output unit 119 (speaker), receiving unit 120, communication interface 121, network control unit 122, a USB (Universal Serial Bus) interface 123, an HDMI (High-Definition Multimedia Interface: registered trademark) 124, an operation unit 125, and a storage unit (storage) 129. The receiver 5 receives a signal constituting the content distributed from the transmitter 3 by satellite and / or terrestrial (digital terrestrial broadcasting) broadcasting, converts the signal constituting the received content, and displays it as content. The receiver 5 can also be connected to an external storage unit (external storage) 306.

The antenna unit 104 receives a broadcast wave or the like and outputs it to the input unit 111. For example, the antenna unit 104 receives a reference video signal and an extended video signal transmitted through the transmission path 101 as a broadcast wave, and outputs them to the input unit 111.
The external input terminal 105 is a terminal for connecting to a dedicated line, a terminal device, and / or an external device.

The external output terminal (audio output terminal) 106 is a terminal for outputting an audio signal output from an audio processing unit 118 described later to an audio device to be connected.
An external output terminal (video output terminal) 107 is a terminal for outputting a video output from a video processing unit 117 described later to a connected display device.

The input unit 111 includes an antenna that receives a broadcast and a tuner that selects a received signal. The input unit 111 includes a plurality of tuners, for example, eight tuners corresponding to digital terrestrial broadcast signals, BS (Broadcasting satellite) broadcast signals, CS (Communications satellite) signal broadcasts, and the like, as shown in FIG. . Here, the terrestrial digital broadcast signal is a terrestrial broadcast, and is a signal (a reference video signal, an extended video signal, etc.) transmitted as a terrestrial broadcast wave via a spatial wave or a line, and the BS and CS broadcast signals are satellites. It is a wave broadcast, and is a signal (such as a reference video signal and an extended video signal) transmitted by radio communication as a satellite wave. Here, terrestrial broadcast waves and satellite waves may be collectively referred to as broadcast waves. The input unit 111 is connected to an antenna and receives a program or the like supplied by a broadcaster through a broadcast line and / or a spatial wave. For example, when the input unit 111 includes a plurality of tuners, the input unit 111 receives at least one tuner a signal constituting the program. The input unit 111 outputs the received signal to the demodulation unit 112. The input unit 111 can also acquire a signal from the external input terminal 105.

  Note that the tuner of the input unit 111 includes a tuner that receives at least one reference video signal and a tuner that receives at least one extended video signal. The first receiving unit and the second receiving unit may be arbitrarily set by the system controller 114, or may be set selectively by the user. At this time, the second receiving unit may be set to an unused tuner by the user or the system controller 114. For example, both the first receiving unit and the second receiving unit may be able to receive signals from broadcast waves. In addition, the first receiving unit can receive a signal transmitted by a broadcast wave, and the second receiving unit can receive a signal transmitted by a broadcast wave or an Internet line (network communication). Good. Alternatively, the first receiving unit can receive a signal transmitted by a broadcast wave or an Internet line (network communication), and the second receiving unit can receive a signal transmitted by a broadcast wave. Good. Furthermore, the first receiving unit and the second receiving unit may be capable of receiving a signal transmitted through a broadcast wave or an Internet line (network communication). In some cases, the Internet line is simply expressed as communication.

  The signal processing unit 113 separates the program supplementary information multiplexed in the received broadcast signal, outputs the separated program supplementary information to the video processing unit 117, and outputs the recording stream to the system controller 114. The recording stream is information obtained by separating the program supplementary information from the broadcast stream received by the input unit 111 in the signal processing unit 113. The signal processing unit 113 includes a decoder corresponding to SHVC. The signal processing unit 113 displays a broadcast signal (broadcast signal and extended broadcast signal) acquired from the input unit 111 as a video signal (video) (first TS signal and second TS signal) and an audio signal (audio). Separated into control information. Furthermore, the signal processing unit 113 performs a restoration process (decoding process) on the first TS signal and the second TS signal. The signal processing unit 113 outputs the reference video signal and the high-quality video signal generated by the restoration process to the graphic processing unit 116 in accordance with the instruction signal from the CPU 131. Here, the reference video signal is, for example, a video signal corresponding to 2K video transmitted by the current HD broadcast. The high-quality video signal is a video signal corresponding to 4K or 8K video, for example. The signal processing unit 113 outputs an audio signal to the audio processing unit 118 in accordance with an instruction signal from the CPU 131.

  In the present embodiment, the signal processing unit 113 performs a decoding process on an input scalable encoded (SHVC (MPEG-HEVC Video) encoded) video signal. Corresponding to the SHVC encoding method, the signal processing unit 113 selects one of inter prediction (motion compensation prediction), intra prediction (intra-screen prediction), and inter-layer prediction (inter-image prediction) when decoding an extended prediction image. Can be executed. For example, the signal processing unit 113 generates a high-quality video signal, for example, a 4K video signal by performing inter-layer prediction with reference to the up-converted reference video signal and the extended video signal, and generates the generated high-quality video signal. Is output.

The signal processing unit 113 includes a demodulation unit 211 and an information acquisition unit 221.
The demodulator 211 demodulates the modulated signal. The demodulation unit 211 includes a plurality of demodulation units corresponding to a plurality of tuners. The demodulator 211 demodulates, for example, a reference video signal (TS signal), an extended video signal (TS signal), and an audio signal that are modulated so as to be suitable for transmission through a transmission path. When recording, the demodulator 211 outputs the video signal (reference video signal and extended video signal) demodulated according to the CPU 131 (recording manager 136) to the storage unit 129.

FIG. 3 is a block diagram illustrating an example of the information acquisition unit 221. In FIG. 3, two types of lines are shown, but the double line indicates input / output of a content signal, for example, a signal including a video signal, and the solid line does not include a video signal, for example, a control signal And input / output of a signal including information (signal).
The information acquisition unit 221 acquires various types of information from a plurality of signals, multiplexes the acquired information, and outputs the multiplexed information to a recording medium, for example, the storage unit 129 and / or the external storage unit 306.

  The information acquisition unit 221 includes at least input terminals 60 and 80, a first demultiplexing unit 62, a second demultiplexing unit 82, and an output terminal 90. In the first demultiplexing unit 62 and the second demultiplexing unit 82, the system time reference value (System Time Clock: STC) is common. As described above, each part of the information acquisition unit 221 is controlled by the CPU 131. That is, the CPU 131 controls the first demultiplexing unit 62, the second demultiplexing unit 82, and the like.

  The input terminal 60 is a terminal for inputting a reference video signal to the information acquisition unit 221. The reference video signal input from the input terminal 60 is input to a first demultiplexing unit 62 described later. The input terminal 80 is a terminal for inputting an extended broadcast signal to the information acquisition unit 221. The extended video signal input from the input terminal 80 is input to a second demultiplexing unit 82 described later.

  The first demultiplexing unit 62 separates the input signal into various information (signals), a video signal, and an audio signal, and outputs the separated various signals. The first demultiplexing unit 62 includes a PID filter (first PID filter) 641 that takes in only signals that satisfy the set filter condition. The first demultiplexing unit 62 can set the value of the PID filter 641 in accordance with the instruction signal from the CPU 131.

  In addition, the first demultiplexing unit 62 extracts the PAT from the information attached to the input signal. Then, the first demultiplexing unit 62 acquires the PID corresponding to the PMT of the program specified by the user operation, for example, the remote controller 302, and acquires the PMT specified by this PID. The first demultiplexing unit 62 acquires the video signal, audio signal, and various information (PIT / SI, EIT included in SI, etc.) specified by this PMT.

Further, the first demultiplexing unit 62 performs a decryption process on the input signal. The first demultiplexer 62 outputs various information requested by the CPU 131 from the decrypted signal (video signal, audio signal, various information, etc.). For example, the first demultiplexing unit 62 outputs the program information acquired according to the recording management unit 136 described later to a storage medium, for example, the storage unit 129 and / or the external storage unit 306.
Also, the first demultiplexing unit 62 is equivalent to referring not only to ES in the same signal but also to a different signal, for example, a PMT included in the PSI in the extended video signal, according to the instruction signal of the CPU 131. Thus, the ES in the extended video signal can be referred to. Note that the first demultiplexing unit 62 may not refer to the PSI in the extended video signal. The first demultiplexing unit 62 may be configured to refer only to information such as PSI / SI of the reference video signal.

The second demultiplexing unit 82 separates an input signal into various information (signals), a video signal, and an audio signal, and outputs the separated various signals. The second demultiplexing unit 82 includes a PID filter (second PID filter) 642 that captures only signals that satisfy the set filter condition. The second demultiplexing unit 82 can set the value of the PID filter 642 according to the instruction signal from the CPU 131.
Similar to the first demultiplexing unit 62, the second demultiplexing unit 82 acquires a video signal, an audio signal, and various types of information (ESI included in PSI / SI, SI, etc.).

  The second demultiplexing unit 82 performs the decryption process on the input signal. The second demultiplexing unit 82 outputs various information requested by the CPU 131 from the decrypted signal (video signal, audio signal, various information, etc.). For example, like the first demultiplexing unit 62, the second demultiplexing unit 82 stores program information acquired according to the recording management unit 136 described later as a storage medium, for example, the storage unit 129 and / or an externally attached unit. The data is output to the storage unit 306.

  In accordance with the instruction signal from the CPU 131, the second demultiplexing / demultiplexing unit 82 performs not only the ES in the same signal but also a process equivalent to referring to a different signal, for example, a PMT included in the PSI in the reference video signal And the ES in the reference video signal can be referred to. The second demultiplexing unit 82 may be configured to refer only to information such as PSI / SI of the extended video signal.

  The system controller (system control unit) 114 controls the operation of each unit of the receiver 5. That is, the system controller 114 includes an input unit 111, a signal processing unit 113, an OSD signal generation unit 115, a graphic processing unit 116, a video processing unit 117, an audio processing unit 118, an audio output unit 119, a receiving unit 120, a communication interface (I / F) 121, network control unit 122, USB interface (I / F) 123, HDMI 124, operation unit 125, storage unit 129, and the like.

  The system controller 114 receives input signals (remote controller (remote controller)) 302 received by the receiving unit 120, an external storage unit 306 and a portable terminal such as a smartphone, a mobile phone, a tablet, and a notebook PC ( Various control commands corresponding to the operation instruction signal) are output. Here, the control command is a command for instructing, for example, recording of a television method (program), reproduction of recorded content (program), and the like.

Further, the system controller 114 includes a CPU 131, a ROM (Read Only Memory) 132, a RAM (Random Access Memory) 133, an NVM (Non-Volatile Memory) 134, a capacity management unit 135, and a recording management unit 136. Including.
The CPU 131 is a main processor that controls operations. The CPU 131 can read and execute setting information included in the ROM 132, the NVM 134, and the like. The CPU 131 also controls a plurality of circuits included in the system controller 114. The CPU 131 receives the operation information from the operation unit 125 provided in the main body of the receiver 5 or the operation information transmitted from the remote controller 302 and received by the reception unit 120, thereby reflecting the operation contents of the operation information. Thus, each part of the receiver 5 is controlled.

A ROM (Read Only Memory) 132 holds a control program executed by the system controller 114 (CPU 131).
A RAM (random access memory (work memory)) 133 provides a work area to the system controller 114 (CPU 131).

  The NVM (nonvolatile memory) 134 holds various setting information, control information, and the like of the receiver 5. The non-volatile memory 134 can also hold program table construction content information. For example, the nonvolatile memory 134 includes setting information for various display screens.

  The capacity management unit 135 manages the data size of the recording medium capacity (storage capacity), saved data, various video data (video signal), audio data (audio signal), and the like according to the CPU 131. The capacity management unit 135 acquires the data size of various data from the information acquisition unit 221 according to the CPU 131, and outputs the acquired data size. Further, the capacity management unit 135 can manage the capacity of the recording medium for each storage area section and output the remaining free capacity of the storage medium for each storage area section. For example, the capacity management unit 135 manages the storage capacity of the storage unit 129. The capacity management unit 135 outputs the remaining free capacity in the storage area of the storage unit 129. The capacity management unit 135 may hold a capacity management table for managing the storage area for each section. The capacity management unit 135 can also calculate and output the recordable time from the capacity of the storage medium. The capacity management unit 135 is described as a circuit, but may be incorporated into the CPU 131 as firmware.

  When an external storage medium is connected to the receiver 5, the capacity management unit 135 can also manage the internal storage medium and the external storage medium at the same time, and selectively select one capacity. You can also manage only. When managing selectively, the capacity management unit 135 manages the storage medium determined according to the user operation. For example, the capacity management unit 135 can simultaneously manage the built-in storage unit 129 and the external storage unit 306.

  The recording management unit 136 manages the recording operation according to the CPU 131. In addition, when receiving a recording execution signal from the CPU 131, the recording management unit 136 manages a management list (management information), a recording list (recording information), and a recording dialog (recording information) of contents to be recorded (television programs and the like). Dialog box). The recording management unit 136 has a function of associating a reference video signal and an extended video signal corresponding to the reference video signal. The recording management unit 136 stores the created management list, recording list, and recording dialog in the storage unit 129. The management list, the recording list, and the recording dialog may be stored in a storage unit other than the storage unit 129. For example, the management list and the recording list may be stored in the external storage unit 306 and / or the NVM 134. The recording management unit 136 is described as a circuit, but may be incorporated in the CPU 131 as firmware.

  The recording management unit 136 can also display the remaining free capacity of the storage medium output from the capacity management unit 135 in the recording list and the recording dialog. For example, when the display operation of the storage medium is requested by a user operation, the recording management unit 136 performs processing to display the remaining free capacity of the storage medium in the recording list and the recording dialog. The recording management unit 136 holds information on the capacity (size) of recorded program data as management list information. For example, when the recording management unit 136 is requested to display the capacity (size) of recorded program data by a user operation, the recording management unit 136 performs processing to display information on the capacity of recorded program data in the recording list and the recording dialog. To do.

  The management list includes metadata (detailed content information (program ID, title, series ID), recorded date / time information (recording date, start time, end time), viewing history, etc.) and link information indicating a storage location in the storage. , The address of the data in the storage, and extended information that is information related to the extended video signal. The recording management unit 136 acquires the metadata, link information, address, and extended information of the video to be recorded from the PSI / SI information from the extended information acquisition unit when recording.

  The recording list is an image or the like showing a list of recorded programs including information related to the program. The recording list is displayed on the screen by a user operation. The user can play back, delete, duplicate, etc. the recorded program by operating the recording list displayed on the screen.

  The recording dialog is an image or the like showing a list of programs that can be viewed. The recording dialog is displayed on the screen by a user operation. The recording dialog is a pop-up image that is displayed so as to ask the user for a response when recording is performed by a user operation. The user can select a program or the like to be recorded by operating a recording dialog displayed on the screen, and can perform recording of the selected program in the CPU 131 (recording management unit 136).

  The OSD signal generation unit 115 generates an OSD (On Screen Display) signal. The OSD signal generation unit 115 outputs the generated OSD signal to the graphic processing unit 116. For example, the OSD signal generation unit 115 generates an OSD signal such as EPG generated from the program information acquired by the system controller 114 (CPU 131), and outputs the generated OSD signal to the graphic processing unit 116.

  The graphic processor 116 has a function of superimposing and outputting the OSD signal generated by the OSD signal generator 115 on the digital video supplied from the signal processor 113. The graphic processing unit 58 can selectively output the output video signal of the signal processing unit 113 and the output OSD signal of the OSD signal generation unit 115, and can also combine and output both outputs.

  The video processing unit 117 converts the video signal into a predetermined displayable resolution and output method, and outputs the converted video signal. For example, when the display device 150 is connected to the receiver 5, the video processing unit 117 converts to a resolution and output method suitable for display on the display device 150, and outputs to the display device 150. The video processing unit 117 may output the above-described video signal to an output terminal of an external monitor device or a projection device (projector device) connected as an external device.

The audio processing unit 118 decodes the audio / acoustic signal (audio) of the program received by the input unit 111 and outputs it to the audio output unit 119.
The audio output unit 119 is a device that outputs audio, such as a speaker.

  The receiving unit 120 inputs a control command corresponding to an input signal from an external terminal such as the remote control 302 and a portable terminal to the system controller 114.

  The communication interface 121 realizes wireless communication with a short-range wireless communication device compliant with, for example, the WiFi (Wireless Fidelity) standard. As the short-range wireless communication standard, for example, Bluetooth (registered trademark) standard, NFC (Near Field Communication), or the like can be used. The communication interface 121 may be either a wired system or a wireless system. For example, a communication unit that can transmit and receive signals to and from a wireless keyboard, a mouse, and the like is connected. The communication interface 121 can also communicate with, for example, a card reader (reading unit) 304 that can communicate with a non-contact card medium.

  The network control unit 122 controls access to an external network, for example, the Internet (IP network). The network control unit 122 transmits and receives information (network communication) on the Internet (IP network). For example, the network control unit 122 can also receive extended video information via an IP network. In this case, the network control unit 122 inputs the extended video signal to the input unit 111 in accordance with the instruction signal from the CPU 131. Note that the network control unit 122 may receive the reference video signal and / or the extended video signal and output it to the input unit 111.

The USB interface 123 is connected to, for example, an external device that conforms to the USB standard, for example, an external storage unit 306 that is an external storage medium.
The HDMI 124 enables wired communication between a plurality of devices that use the HDMI standard or the MHL (Mobile High-definition Link) standard.

The operation unit 125 inputs a control command corresponding to a direct operation by the user to the system controller 114.
The storage unit 129 is a storage medium for storing data. The storage unit 129 is a magnetic storage medium, for example, an HDD (Hard Disk Drive). The storage unit 129 records various setting information of the receiver 5, received content, video displayed on the display device 150, and the like. Storage unit 129 is connected to demodulation unit 112 and stores the content received by input unit 111. For example, the storage unit 129 stores the reference video signal and the extended video signal in association with each other so as to be reproducible. At this time, the storage unit 129 generates a management list of recorded content generated by the CPU 131 when recording. Note that the storage unit 129 may be connected via the USB interface 123 as an external device.

FIG. 4 is a schematic diagram illustrating an example of storage data of the storage medium according to the present embodiment.
As illustrated in FIG. 4, the storage medium of the present embodiment, for example, the storage unit 129 and the external storage unit 306 includes a metadata area A1 and a storage area A2. Hereinafter, for convenience of explanation, the storage unit 129 will be described, but the external storage unit 306 may also hold equivalent storage data.

  The storage unit 129 holds metadata in the metadata area A1, and holds various contents such as programs in the storage area A2. The metadata includes, for example, content basic information, reference information (reference data) of the standard video signal, and reference information of the extended video signal. The basic content information includes the address of stored data, the recording time of the recorded program, the data size of the recorded program, the genre information of the recorded program, the broadcast station information of the recorded program, the URL at the time of Internet distribution, and the like. Here, the reference information includes various types of information, for example, information indicating the relationship between the standard video signal and the extended video signal. The reference information may include basic content information. The reference information of the reference video signal includes link information to the storage location of the reference video signal and the address of the storage location of the storage. Further, the reference information of the standard video signal includes a corresponding extended video signal and string information. The link information is an identifier of extended video information corresponding to the reference video signal, a storage location, link information to the storage location, and the like. Similarly, the reference information of the extended video signal includes link information to the storage location of the extended video signal and the address of the storage location. Further, the reference information of the extended video signal includes a corresponding standard video signal and string information. The link information is an identifier of reference video information corresponding to the extended video signal, a storage location, link information to the storage location, and the like.

  When receiving an instruction for a predetermined program by a user operation, the CPU 131 can access predetermined stored data by referring to the metadata. For example, when the reference video signal of a predetermined program is requested by a user operation, the CPU 131 refers to the content basic information of the metadata and the reference information of the reference video signal, and accesses the stored data of the reference video signal in the storage. . Further, when a high-quality video of the reference video signal selected by the user operation is requested, the CPU 131 refers to the basic content information of the metadata and the reference information of the extended video signal, and the extended video of the selected reference video signal Get the saved data of the signal. The CPU 131 can also decode the acquired reference video signal and extended video signal by the signal processing unit 113 and perform playback processing.

FIG. 5 is a flowchart showing the recording operation of the receiver 5 of this embodiment.
In S501, a program to be recorded is selected by a user operation via the remote control 302 or the like.
In S502, recording of the program selected by the user operation is executed.
In step S <b> 503, the recording management unit 136 acquires the metadata of the recorded program from the information acquisition unit 221, and temporarily stores the metadata in the RAM 133 and / or the NVM 134.

  In S <b> 504, the recording management unit 136 determines whether the recorded program is SHVC content from the information acquired by the information acquisition unit 221. For example, the recording management unit 136 reads a flag indicating SHVC newly described in the EIT acquired by the information acquisition unit 221 and determines whether the recorded program is SHVC content. Here, the SHVC content refers to a program or the like in which an extended video signal corresponding to the reference video signal is broadcast or distributed.

When the content is SHVC content (YES in S504), in S505, the recording management unit 136 adds the recording option of the extended video (signal) to the recording dialog displayed on the display device 150, and the process proceeds to S506.
If it is not SHVC content (NO in S504), the process proceeds to S506.

In step S <b> 506, the CPU 131 displays the recording list created by the recording management unit 136.
In S507, the displayed recording dialog option is selected, and the determination operation is executed by the user operation.

In S508, the CPU 131 requests selection of whether or not to record the extended video signal.
When recording an extended video signal is selected by a user operation (YES in S508), in S509, the recording management unit 136 stores the metadata of the recorded program acquired by the information acquisition unit 221 and / or the storage unit 129. It is created (stored) in the attachment storage unit 306.

  In S510, the recording management unit 136 adds the reference information of the standard video signal and the reference information of the extended video signal to the created metadata.

  In step S <b> 511, the CPU 131 (recording management unit 136) simultaneously stores (records) each of the reference video signal and the extended video signal in a storage medium, for example, in a storage area of the storage unit 129 and / or the external storage unit 306. )

  When it is selected by the user operation not to record the extended video signal (NO in S508), in S512, the recording management unit 136 stores the metadata of the recorded program acquired by the information acquisition unit 221 and / or the storage unit 129. It is created (stored) in the attachment storage unit 306.

  In S513, the recording management unit 136 adds reference information of the standard video signal to the created metadata.

  In S <b> 514, the CPU 131 (recording management unit 136) stores the reference video signal in a predetermined location in a storage medium of the recording medium, for example, the storage unit 129 and / or the external storage unit 306. Here, the reference video signal is almost equivalent to the video signal of the current broadcast. Therefore, the recording process of the reference video signal can be executed by a process substantially equivalent to the process of recording the current broadcast program.

Several examples of operations during recording in the receiver 5 of the present embodiment will be described below with reference to the drawings.
6A, 6B, and 6C are diagrams illustrating an example of an operation during recording in the receiver 5 of the present embodiment.
FIG. 6A shows an example of a program guide, and FIG. 6B shows an example of a recording dialog P1 of the present embodiment. In FIG. 6A, reference symbol G1 indicates an EPG (Electronic Program Guide: hereinafter referred to as a program guide), and reference symbol PR1 indicates one program in the program guide.

  In FIG. 6A, the program PR1 in the program guide G1 is selected by a user operation via the remote controller 302 or the like. An operation for executing recording of the program PR1 selected by a user operation via the remote control 302 or the like is performed. At this time, as shown in FIG. 6B, the recording dialog P1 is displayed on the program guide G1. The recording dialog P1 includes a storage medium, for example, a free space display I601 such as the HDD 1 (storage unit 129), a recording option, and the like.

  Only one free capacity display I601 may be displayed, or when the receiver 5 includes a plurality of storage media, a plurality of free capacity displays I601 may be displayed to indicate the free capacity of the plurality of storage media. . The user can determine whether to save the extended video signal by checking the free space display I601.

  The recording option includes at least a selection button B1 as to whether or not to save the extended video (signal). If the selected program has not been distributed with the extended video signal, this option button B1 is not displayed or displayed so that it cannot be selected. For example, as shown in FIG. 6B, the recording options include options such as “set as favorite”, “continuous series recording”, “change recording destination HDD”, and “do not save 4K extended video”. Including.

  In FIG. 6B, when the program recording is executed by selecting the “Do not save 4K extended video” option button B1 of <Recording option> by the user operation, the recording management unit 136 stores the metadata of the recorded program in the storage medium. And only the reference video signal is stored in the storage unit 129 and / or the external storage unit 306 or the like. At this time, the user can determine whether the resolution of high-quality video, for example, 4K video, is necessary according to the genre of the program to be recorded, and can select the option button B1 of “Do not save 4K extended video”. For example, when recording news, variety, or the like, the option button B1 is selected because it is not necessary to be 4K video. When recording movies, documentaries, travel programs, etc., it is considered that 4K video is desirable, so the option button B1 is not selected.

FIG. 6C is a diagram illustrating an example of the recording dialog P1 of the present embodiment.
As shown in FIG. 6C, when the “Don't save 4K extended video” option button B1 in the recording dialog P1 is selected by a user operation via the remote control 302 or the like, a pop-up P2 indicating the data size of the recorded program is displayed. May be. The pop-up P2 is created by the capacity management unit 135. For example, the pop-up P2 indicates the data size of the recorded video when the 4K extended video is saved (recorded) (extended data size, 4K extended data size) or the data size of the recorded video when the 2K video is saved (recorded) ( 2K recording data size) and the like. The user can determine whether or not to save the extended video by confirming the pop-up P2.

  According to the present embodiment, the receiver 5 includes a capacity management unit 135 and a recording management unit 136 in the system controller 114. The capacity management unit 135 manages various data sizes and storage medium capacities. The recording management unit 136 manages the recording operation of the receiver 5 and creates a management list, a recording list, a recording dialog, and the like. As a result, the receiver 5 of the present embodiment selectively stores the reference video signal and the extended video signal by a user operation according to the free space of the storage medium (storage). That is, the user can select whether to save the reference video signal and the extended video according to the free space of the storage medium. In addition, the user can select whether to save an extended video signal corresponding to the reference video signal for each genre of content (program). As a result, the receiver 5 of this embodiment can efficiently use the storage medium.

  Next, a modification of the transmission / reception system according to the first embodiment will be described. In the modification of the embodiment, the same reference numerals are given to the same parts as those of the above-described embodiment, and the detailed description thereof is omitted.

(Modification 1)
The transmission / reception system 1 of the first modification of the first embodiment is substantially the same as the configuration of the first embodiment, but the transmitter 3 adds a descriptor that restricts copying (copying) to the extended video signal. It is.

  The transmitter 3 newly defines (describes) information that restricts copying in the PSI / SI information (“Digital copy control descriptor (Digital copy control descriptor)” included in the PMT) of the extended video signal and transmits it to the transmission path 101. Can be transmitted.

  FIG. 7A is a diagram showing a data structure of a newly defined digital copy control descriptor, and FIG. 7B is a diagram showing digital copy control information. The data structures shown in FIGS. 7A and 7B are data structures defined by ARIB STD-B10, which is a standard for program arrangement information used for digital broadcasting.

The transmitter 3 multiplexes and transmits copy restriction information including a copy control descriptor to the extended video signal.
In the data structure of the digital copy descriptor in FIG. 7A, the transmitter 3 encodes “digital_recording_control_data” that is information for controlling the copy generation by the user or the operator according to the digital copy control information in FIG. Turn into. For example, when the copy is prohibited, the transmitter 3 encodes “11” as digital copy control information in “digital_recording_control_data”. Further, the transmitter 3 encodes “01” as digital copy control information in “digital_recording_control_data” when the number of times of copying is determined on the sender side.

  In the present embodiment, the transmitter 3 sets the copy restriction information (second copy restriction information) of the extended video signal to be different from the copy restriction information (first copy restriction information) of the reference video signal. The transmitter 3 uses the first copy restriction information that is currently used, for example, information that sets the number of copy restrictions 10 times in accordance with the dubbing 10. For example, the transmitter 3 sets the number of copies that can be included in the second copy restriction information to be smaller or prohibited than the number of copies that can be made in the first copy restriction information.

  The recording management unit 136 of the receiver 5 reads the first copy restriction information and the second copy restriction information, and executes a recording operation according to the number of times of recording (copy restriction). When a descriptor for reading different transmission path information (for example, ES) is described in the extended video signal, the recording management unit 136 reads the first copy restriction information and the first copy information only by reading the extended video signal. The copy restriction information can be read by reading the second copy restriction information.

  According to the first modification of the present embodiment, the transmitter 3 multiplexes and transmits the newly defined copy restriction information in the extended video signal. The receiver 5 can immediately determine whether or not the extended video signal can be recorded by acquiring the second copy restriction information included in the extended video signal by the recording management unit 136. As a result, the receiver 5 of this embodiment can efficiently use the storage medium.

Next, a transmission / reception system according to another embodiment will be described. In other embodiments, the same parts as those in the above-described embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.
(Second Embodiment)
The receiver 5 of the second embodiment has substantially the same configuration as the receiver 5 of the first embodiment, but further includes a configuration that can delete only the recorded extended video signal.

FIG. 8 is a block diagram illustrating an example of the receiver 5 according to the second embodiment.
In addition to the configuration of the first embodiment, the receiver 5 of the second embodiment further includes a deletion management unit 137 in the system controller 114.

  The deletion management unit 137 manages the deletion operation according to the CPU 131. In addition, the deletion management unit 137 creates a deletion dialog (deletion dialog box) to be displayed when a signal for executing deletion of a recorded program is received from the CPU 131. When the deletion management unit 137 acquires a deletion signal by a user operation, the deletion management unit 137 acquires the metadata of the recorded program, and specifies the storage location of the extended video signal corresponding to the reference video signal of the recorded program in the storage medium. The deletion management unit 137 stores the created deletion dialog in the storage unit 129. Note that the deletion dialog may be stored other than the storage unit 129. For example, the deletion dialog may be stored in the external storage unit 306 and / or the NVM 134. The deletion management unit 137 is described as a circuit, but may be incorporated in the CPU 131 as firmware.

  The deletion management unit 137 can also display the remaining free capacity of the storage medium output from the capacity management unit 135 in the deletion dialog. For example, when the display of the remaining free space of the storage medium is requested by a user operation, the deletion management unit 137 performs processing to display the remaining free space of the storage medium in the deletion dialog. In addition, the deletion management unit 137 can acquire information on the capacity of recorded data of a recorded program as information from the management list. For example, when the deletion management unit 137 is requested to display the capacity (size) of the recorded program data to be deleted by a user operation, the deletion management unit 137 displays information on the capacity of the recorded program data in the deletion dialog. To process.

FIG. 9 is a flowchart showing the recorded program deletion operation of the receiver 5 of this embodiment.
In S901, a recording list is displayed by a user operation via the remote controller 302 or the like.
In S902, a recorded program is selected from the recording list by a user operation.
In step S <b> 903, a delete dialog key (delete dialog button) provided in the terminal, for example, the remote controller 302 is pressed by a user operation.

  In S904, the deletion management unit 137 acquires the metadata of the recorded program selected in S902 and S903, and expands video corresponding to the reference video signal in the storage medium, for example, the storage unit 129 and the external storage unit 306. Identify signal storage locations.

  In S905, the deletion management unit 137 determines whether the recorded program to be deleted is SHVC content from the acquired metadata.

  If it is determined that the content is SHVC content (YES in S905), in S906, the deletion management unit 137 adds an option for deleting the extended video (signal) to the deletion dialog displayed on the display device 150.

In step S <b> 907, the CPU 131 displays a deletion dialog on the display device 150.
In S908, when deletion of a recorded program is selected by a user operation in the deletion dialog, the deletion management unit 137 issues an instruction to execute deletion of the selected recorded program.

In step S909, the deletion management unit 137 acquires the reference information of the extended video from the metadata related to the recorded program instructed to be deleted, and the process proceeds to step S912.
When it is determined that the content is not SHVC content (NO in S905), the CPU 131 displays a deletion dialog on the display device 150 in S910.
In S911, when deletion of a recorded program is selected in the deletion dialog by a user operation, the deletion management unit 137 issues an instruction to execute deletion of the selected recorded program, and the process proceeds to S915.

  In S912, it is determined whether or not deletion of only the extended video is selected by the deletion option of the deletion dialog by the user operation.

When deletion of only the extended video is selected in the deletion option of the deletion dialog (YES in S912), in S913, the deletion management unit 137 deletes the storage data of the extended video signal instructed to be deleted.
In S914, the deletion management unit 137 deletes the link information with the deleted extended video signal included in the reference information of the standard video signal, and the process proceeds to S917.

  If deletion of only the extended video is not selected in the deletion option of the deletion dialog (NO in S912), in S915, the deletion management unit 137 stores the reference video signal and the extended video signal storage data of the recorded program instructed to be deleted. Is deleted.

  In S916, the deletion management unit 137 deletes the metadata of the recorded program for which deletion has been instructed, and proceeds to the processing of S917.

  In S917, the capacity management unit 135 updates the free capacity of the storage medium, for example, the storage unit 129 and / or the external storage unit 306, and also updates the recordable time.

Several examples of operations during recording in the receiver 5 of the present embodiment will be described below with reference to the drawings.
10A, 10B, and 10C are diagrams illustrating an example of an operation at the time of deletion in the receiver 5 of the present embodiment.
FIG. 10A shows an example of the recording list of this embodiment, and FIG. 10B is a diagram showing an example of the deletion dialog P3 of this embodiment. In FIG. 10A, reference numeral G2 indicates a recording list created by the recording management unit 136. In FIG. 10B, reference symbol P3 indicates a deletion dialog.

  As shown in FIG. 10A, the recording list G2 is displayed on the display device 150 by a user operation via the remote controller 302 or the like. When a recorded program displayed on the recording list G2 in FIG. 10A is selected as a deletion target by a user operation, a deletion dialog P3 is displayed on the recording list G2 as shown in FIG. 10B. The deletion dialog P3 includes a storage medium, for example, a free space display I601 such as the HDD 1 (storage unit 129), a deletion option, and the like.

  Only one free capacity display I601 may be displayed, or when the receiver 5 includes a plurality of storage media, a plurality of free capacity displays I601 may be displayed to indicate the free capacity of the plurality of storage media. . The user can determine whether to save the extended video signal by checking the free space display I601.

  The deletion option includes at least a selection button B2 as to whether or not to delete the extended video (signal). If the selected program has not been distributed with the extended video signal, this option button B2 is not displayed or displayed so that it cannot be selected. For example, as shown in FIG. 10B, the delete option includes options such as “delete recorded program”, “delete only 4K extended video of the recorded program”, and “cancel”.

  In FIG. 10B, when the selection button B2 of the “delete only 4K extended video of the recorded program” option is selected by the user operation and the deletion of the recorded program is executed, the deletion management unit 137 deletes the metadata from the storage medium. Only the extended video signal related to the recorded program is deleted from the storage unit 129 and / or the external storage unit 306 or the like. At this time, the user determines whether a resolution of high-quality video, for example, 4K video, is necessary according to the genre of the recorded program to be deleted, and selects “Delete only 4K extended video of recorded program” option button B2 Can be selected. For example, when the recorded program is news, variety, or the like, the option button B2 is selected because there is no need for 4K video. When the recorded program is a movie, a documentary, a travel program, or the like, it is considered that 4K video is desirable, so the option button B2 is not selected.

FIG. 10C is a diagram illustrating an example of the deletion dialog P3 according to the present embodiment.
As shown in FIG. 10C, when the “Delete only 4K extended video of recorded program” option button B2 in the deletion dialog P3 is selected by a user operation via the remote control 302 or the like, a pop-up showing the data size of the recorded program P4 may be displayed. The pop-up P4 is created by the capacity management unit 135. For example, the pop-up P4 may include a 4K extended video data size, a storage medium after deletion, for example, a free capacity of the storage unit 129 and / or the external storage unit 306, and the like. The user can determine whether or not the extended video should be deleted by confirming the pop-up P4.

FIG. 11 is a diagram illustrating an example of the remote controller 302 of the present embodiment.
As shown in FIG. 11, the remote controller 302 of this embodiment includes a dedicated button (delete dialog button, delete dialog key) B3 for displaying a delete dialog as shown in FIGS. 10A to 10C. May be. When a recorded program in a state where the recording list is displayed is selected, a deletion dialog is displayed on the recording list when the user presses the button B3.

  FIG. 12 is a diagram showing an example of a recording list of this embodiment. In FIG. 12, reference symbol G indicates a recording list.

As shown in FIG. 12, the recording list may be displayed by being rearranged for each type.
The recording list G3 is displayed on the display device 150 as shown in FIG. 12 by a user operation via the remote controller 302 or the like. The recording list G3 includes a free space display I601 such as an HDD 1 (storage unit 129), a display image B4 of a recorded program, a button B5 for deleting only an extended video (signal), and other recordings. A button B6 for transitioning to a program screen, a deletion option, and the like are included.

  When the display image B4 of the recorded program is selected and determined by a user operation, the CPU 131 reproduces the recorded program. This recorded program display image B4 includes a button B5 for deleting only the extended video (signal). When the button B5 is selected by a user operation, the deletion management unit 137 deletes only the 4K extended video of the selected recorded program. When the cursor is moved to the button B5 by a user operation, a pop-up P5 indicating the data size of the recorded program may be displayed. The pop-up P5 is created by the capacity management unit 135. For example, the pop-up P5 may include a 4K extended video data size, a storage medium after deletion, for example, a free capacity of the storage unit 129 and / or the external storage unit 306, and the like. The user can determine whether or not the extended video should be deleted by confirming the pop-up P5.

FIG. 13 is a diagram illustrating an example of the remote controller 302 of the present embodiment.
As shown in FIG. 13, the remote controller 302 of this embodiment may include a dedicated button B7 for deleting only the extended video, for example, a “4K data delete” button B7. When a program is selected on the recording list, when the user presses B7 of the remote control 302, the extended video of the selected recorded program is immediately deleted.

  According to the present embodiment, the receiver 5 includes a deletion management unit 137 in the system controller 114. The deletion management unit 137 manages the deletion operation of the receiver 5 and creates a deletion dialog or the like. As a result, the receiver 5 of this embodiment selectively deletes the reference video signal and the extended video signal by a user operation according to the free space of the storage medium (storage). That is, the user can select whether to delete the reference video signal and the extended video according to the free space of the storage medium. Further, the user can select whether or not to delete the extended video signal corresponding to the reference video signal for each genre of content (program). As a result, the receiver 5 of this embodiment can efficiently use the storage medium.

  According to the above-described embodiment, the receiver 5 includes the capacity management unit 135 and the recording management unit 136 in the system controller 114. The capacity management unit 135 manages various data sizes and storage medium capacities. The recording management unit 136 manages the recording operation of the receiver 5 and creates a management list, a recording list, a recording dialog, and the like. As a result, the receiver 5 of the present embodiment selectively stores the reference video signal and the extended video signal by a user operation according to the free space of the storage medium (storage). That is, the user can select whether to save the reference video signal and the extended video according to the free space of the storage medium. In addition, the user can select whether to save an extended video signal corresponding to the reference video signal for each genre of content (program). As a result, the receiver 5 of this embodiment can efficiently record according to the capacity of the storage medium.

  In the above-described embodiment, the recording and deletion processing of the receiver 5 is described as being selected by the user each time, but it can also be applied when the receiver 5 automatically executes such as scheduled recording. At that time, the system controller 114 (CPU 131) executes recording and deletion by the above-described method according to the contents preset by the user.

  In the above-described embodiment, the recording and deletion process of the receiver 5 can be executed for a plurality of programs at the same time.

  In the above-described embodiment, the reference video signal and the extended video signal are transmitted through transmission paths that transmit different broadcast waves, but may be transmitted over the Internet as transmission paths. For example, as illustrated in FIG. 14, the transmission / reception system 1 includes a transmitter (transmission device) 3, a receiver (reception device) 5, and a server 7. In the transmission / reception system 1, the transmitter 3, the receiver 5, and the server 7 are connected by wired and / or wireless broadcast and communication transmission paths, respectively. In the transmission / reception system 1, the transmitter 3 distributes program content using, for example, broadcast waves as a medium. The server 7 distributes program content via the Internet line. The transmission / reception system 1 includes transmission paths 801, 802, and 803. In the transmission / reception system 1, the transmitter 3 can transmit the reference video signal and the extended video signal by the transmission path 801 and the transmission path that transmits the transmission path 802 and the transmission path 803 via the server 7. .

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof, as long as they are included in the scope and gist of the invention.

  DESCRIPTION OF SYMBOLS 1 ... Transmission / reception system, 3 ... Transmitter (transmission apparatus), 5 ... Receiver (reception apparatus), 7 ... Server, 60, 80 ... Input terminal, 90 ... Output terminal, 62 ... 1st demultiplexing part, 82 DESCRIPTION OF SYMBOLS 2nd demultiplexing part, 104 ... Antenna part, 105 ... External input terminal, 106, 107 ... External output terminal, 111 ... Input part, 113 ... Signal processing part, 114 ... System controller (system control part), 115 DESCRIPTION OF SYMBOLS ... OSD signal generation part 116 ... Graphic processing part 117 ... Video processing part 118 ... Audio | voice processing part 119 ... Audio | voice output part 120 ... Reception part 121 ... Communication interface 122 ... Network control part 123 ... USB interface 124 ... HDMI, 125 ... operation unit, 129 ... storage unit, 131 ... CPU131 ... ROM, 133 ... RAM, 134 ... NVM, 135 ... Volume management unit, 136 ... Recording management unit, 137 ... Deletion management unit, 150 ... Display device, 211 ... Demodulation unit, 221 ... Information acquisition unit, 801 ... First transmission path, 802 ... Second transmission path, 803 ... Third transmission line.

Claims (12)

A first video signal constituting a program and a first receiving unit for receiving;
A second receiver for receiving a second video signal used to improve the image quality of the first video signal;
An electronic device comprising: a control unit that controls whether the first video signal and the second video signal corresponding to the first video signal are recorded simultaneously or only the first video signal is recorded; machine. A storage unit for storing the first video signal and the second video signal;
The control unit includes a storage location of the first video signal and the second video signal in the storage unit when storing the first video signal and the second video signal in the storage unit. The electronic device according to claim 1, wherein metadata is created in the storage unit.   When the control unit stores the first video signal and the second video signal in the storage unit at the same time, the control unit displays reference information indicating a relationship between the first video signal and the second video signal. The electronic device according to claim 2, wherein the electronic device is added to the metadata.   The electronic device according to claim 3, wherein the control unit can delete only the second video signal.   The electronic device according to claim 4, wherein the control unit deletes the reference information when deleting only the second video signal.   The electronic device according to claim 5, wherein the controller deletes the second video signal corresponding to the first video signal and the reference information when deleting the first video signal. Receiving a first video signal constituting a program and a second video signal used for improving the image quality of the first video signal;
A recording method for controlling whether to record the first video signal and the second video signal corresponding to the first video signal at the same time or to record only the first video signal.   8. The recording method according to claim 7, wherein when storing the first video signal and the second video signal, metadata including a storage location of the first video signal and the second video signal is created.   The reference information indicating the relationship between the first video signal and the second video signal is added to the metadata when the first video signal and the second video signal are stored simultaneously. Recording method.   10. The recording method according to claim 9, wherein only the second video signal is deleted.   The recording method according to claim 10, wherein the reference information is deleted when only the second video signal is deleted.   12. The recording method according to claim 11, wherein when the first video signal is deleted, the second video signal corresponding to the first video signal and the reference information are deleted.

Images