KR20060133407A - Digital broadcasting receiver and method for recording reservation using same - Google Patents

Abstract

A digital broadcasting receiver and a reservation recording method using the same are provided to enable a program identifier to prevent that an undesired part of broadcasting is recorded, thereby preventing unnecessary waste of space of a storage medium and easily searching and reproducing only a desired program. A digital broadcasting receiver comprises the followings: a tuner(100) for searching a signal of broadcasting that a user wants to perform reservation recording; a demultiplexer(110) for parsing identification information in which a start point and an end point of the searched broadcasting signal are marked; a decoder(120) for decoding a broadcasting signal corresponding to start and end points of the parsed identification information; and a storage(130) for storing the decoded broadcasting signal.

Description

Digital broadcasting receiver and method for recording reservation using same

1 is a flow chart showing a method of reservation recording using a conventional PVR digital broadcast receiver according to the prior art

2 is a diagram illustrating a configuration of a digital broadcast receiver according to the present invention.

3 is a diagram illustrating a distinguishing identifier of a broadcast stream when performing reserved recording using a digital broadcast receiver according to the present invention.

4 is a flowchart illustrating a method of reserved recording of a digital broadcast receiver according to the present invention.

* Description of the symbols for the main parts of the drawings *

100 tuner and demodulator

110: Demultiplexer

120: decoder

130: memory

140: central processing unit

150: user interface

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to reserved recording of a digital broadcast receiver, and more particularly, to a digital broadcast receiver and a reserved recording method using the same for distinguishing between broadcast programs to be reserved and performing reserved recording.

Recently, the digitization of television broadcasting is progressing rapidly.

A stream transmitted in digital broadcasting may transmit data information together with a video / audio signal. The data information transmitted along with the video / audio signal is based on markup data such as HTML of ATVEF (Advanced Television Enhancement Forum), XDML of Digital TV Application Software Environment (DASE), and Java such as Xlet of DASE. Based data information.

Therefore, in the digital broadcasting as described above, it is possible to broadcast data in various formats in addition to the video and audio that have been broadcast in conventional analog television.

Here, digital broadcasting is a next-generation broadcasting technology capable of two-way operation, reproduction, and accumulation, unlike conventional analog broadcasting, and refers to a television broadcast that encodes a signal of information and compresses the television signal in a digital form.

Conventional analogue television broadcasting can only carry one image on one radio wave, and audio has to be transmitted on another radio wave. However, digital broadcasting has a deterioration in addition to the advantages of loading multiple images or voices on one radio wave. Since information can be compressed without dropping, it is possible to set 4 to 8 channels in the frequency band of a conventional analog broadcast channel. In addition, it is easy to control information using a computer, and interactiveness is also possible to export information ordered from the viewer side.

In order to prepare for the digital broadcasting as described above, many companies are developing digital television or set-top boxes capable of receiving digital broadcasting and data broadcasting.

Digital TV, developed in response to the above-mentioned digital broadcasting, refers to a TV capable of adding high quality screen reproduction and various functions by converting a received broadcast signal into a digital code, which is the third generation through black and white and color. It is a TV.

The digital television not only prevents deterioration of video and audio signals by converting analog signals sent from broadcasting stations into digital signals by attaching separate integrated circuits that can add various functions, but also accurately restores them. You can't see the dual picture caused by reflections and no noise at all.

In addition, the number of scanning lines is 1,050, which makes the screen clearer, and it is possible to compose multiple screens by storing and processing broadcast signals, so that two or three broadcasters can be simultaneously viewed on one TV screen. You can stop and zoom in, and you can check the memorized operation or pull it out with the printer.

Recently, a PVR (Personal Video Recorder) digital broadcast receiver product that records / plays a digital broadcast by embedding a storage medium such as a hard disk has been developed and sold.

Since the PVR digital broadcasting receiver is usually equipped with a high performance CPU and uses a recording unit of file type in a storage medium such as a hard disk (HDD), the user can randomly select a desired program and make a scheduled recording. The advantage is that you can watch.

Therefore, such a PVR digital broadcast receiver should provide a function of selecting a desired program by showing a list of programs stored on the screen through the EPG in order to increase the user's convenience.

In general, in the method of reserved recording using a PVR digital broadcast receiver, when the reserved recording time is reached after setting the reserved recording, the scheduled recording is performed according to the time setting of the reserved recording.

1 is a flowchart showing a method of reserved recording using a conventional PVR digital broadcast receiver.

First, a video / audio / data stream is transmitted from a broadcasting station, where an EPG showing information (time, plot, recording, etc.) about a broadcast program is obtained from the data stream, and also obtained through a newspaper or a magazine.

The user registers the desired broadcast program by using the EPG, newspaper, magazine, etc., and when the scheduled recording is registered, this information is recorded in the order of the reserved recording time in the EEPROM, which is a nonvolatile memory, in the PVR digital broadcasting receiver. Stored.

Subsequently, even if the system power of the PVR digital broadcast receiver is ON or OFF, the microcomputer of the PVR digital broadcast receiver is in a standby state (power on state of the microcom) for reserved recording (S10). ).

When the scheduled recording start time for the broadcast program to be recorded by the user is reached, the system power is turned on (S20), and the system tunes a channel through which the reserved recording program is transmitted using information stored in the EEPROM (S30).

Subsequently, the reserved recording program is recorded on the hard disk (HDD) of the PVR digital broadcasting receiver (S40), and the recording is terminated when the recording time ends (S50).

After deleting the information corresponding to the recording program is completed in the EEPMOM, it is determined whether there is a next scheduled recording program (S60), and if there is next scheduled recording information, it is registered in the first order, and for the registered program The reservation recording start time is set in the microcomputer (S70).

Then, the system is turned off (S80) and the standby state (the power of the microcomputer is turned on).

If there is no reserved recording information, shut down the system.

Here, the above operation is repeated until all the reserved recording programs registered by the user have been recorded, and then, the process ends.

In the conventional reservation recording technology, a user registers a reservation recording through an EPG, a newspaper, or a magazine (from now until a few days later). Since the reserved recording information stored in the receiving system is different from the actual broadcasting time due to the time error, the reserved recording cannot be correctly performed for the desired broadcasting program.

In other words, if the user broadcasts another program whose scheduled recording time is changed during the scheduled recording time, the system records an unwanted program. When a user attempts to watch a broadcast registered by himself / herself, there is a problem of seeing a wrong broadcast.

In addition, broadcasters may recommend recording only certain parts of the program.How to do this can be solved by additionally sending metadata such as XML, but how to accurately synchronize the program segments specified in the metadata is also ambiguous. There is.

The present invention provides a digital broadcast receiver and a scheduled recording method using the same when a digital broadcast receiver having a PVR function wants to schedule recording of a desired broadcast program, thereby making it easy to distinguish between programs, thereby preventing time errors such as duplication and cut-off of recording. The purpose is to.

According to an aspect of the present invention, a digital broadcast receiver includes a tuner for tuning a broadcast signal to be reserved for a user, a demultiplexer for parsing identification information indicating a start and an end of the tuned broadcast signal, and the parsing. And a storage unit for decoding the broadcast signal corresponding to the start to the end of the identification information, and a storage unit for storing the decoded broadcast signal.

In accordance with another aspect of the present invention, there is provided a reservation recording method using a digital broadcast receiver. And if identification information is displayed on the tuned broadcast program, recording the program on which the identification information is displayed.

Preferably, the input reserved recording condition is channel, title, and recording time, and the identification information is an identifier indicating a distinction between programs, and is a program start identifier and a program end identifier.

Further, the identification information indicates segmentation of the program.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a configuration of a digital broadcast receiver according to the present invention.

Referring to FIG. 2, a digital broadcast receiver includes a tuner and demodulator unit 100, a demultiplexer unit 110, a decoder unit 120, and a memory unit 130. And a central processing unit (CPU) 140 and a user interface 150.

The tuner and demodulator 100 receives a digital broadcast stream for a selected channel, demodulates the signal, and transmits the demodulated signal to the demultiplexer 110 under control of the central processing unit 140.

Under the control of the central processing unit 140, the demultiplexer 110 separates the demodulated transport stream received from the tuner and the demodulator 100 into video / audio / data and the like and the decoder 120 To send.

The decoder 120 decodes the video / audio stream transmitted from the demultiplexer 110 under the control of the central processing unit 140.

The decoded video / audio data is stored in a memory unit 130 such as an MPEG memory.

The memory unit 130 is used collectively as a storage medium such as an MPEG memory, a hard disk (HDD), an EEPROM, a RAM, and a ROM, and stores video / audio data, reserved recording information and EPG data registered by a user.

The central processing unit 140 collectively controls the tuner and demodulation unit 100, the multiplexer unit 110, the decoder unit 120, and the memory unit 130, and performs scheduled recording and scheduled recording. Distinguish identifiers to control the system as a whole.

3 is a diagram illustrating a distinguishing identifier of a broadcast stream when performing reserved recording using a digital broadcast receiver according to the present invention.

Referring to FIG. 3, a program A, a program B, and a program C are carried in a stream transmitted from a broadcasting station according to a time t, and a program start identifier (PID) at the beginning and end of a program B to be recorded by a user; When a program end identifier (PID) is set and transmitted, the digital broadcast receiver parses it and checks a program identifier to be recorded before recording.

4 is a flowchart illustrating a reserved recording method of a digital broadcast receiver according to the present invention.

First, when a video / audio / data stream is transmitted from a broadcasting station, an EPG showing information (channel number, title, recording information) about a broadcast program is obtained from the data stream, and a newspaper, a program guide book, and the like are also used.

The user registers the desired broadcasting program by using the EPG or the newspaper broadcasting program guidebook, and when the reserved recording is registered in this manner, this information is stored in the order of the reserved recording time in the EEPROM which is the memory of the digital broadcasting receiver. .

Thereafter, even when the system power of the digital broadcast receiver is ON or OFF, the microcomputer of the digital broadcast receiver is in a standby state (the power of the microcom is on) for reserved recording (S100).

When the scheduled recording start time for the broadcast program that the user wants to record is reached, the system power is turned on (S20), and the system tunes a channel through which the reserved recording program is transmitted using information stored in the EEPROM (S130).

Subsequently, the program identifier of the tuned channel is parsed (S140).

Here, the parsing is to parse the actual start identifier PID and the end identifier PID of the broadcast program that the user wants to record, and this program identifier is set in the broadcast stream and transmitted to the digital broadcast receiver.

For example, the EEPROM registers broadcast information that the user intends to reserve and record by obtaining information from EPG information or newspaper. That is, assuming that the channel number of the reserved recording program registered in the EEPROM is stored as '100', the title is 'Hi Francesca', and the recording time '9: 00 ~ 9: 50' If the transmission time is from 9:05 to 9:55 minutes, duplication of the program to be recorded and recording of the recording will be cut off due to a time error in the reserved registered information and the information to be recorded.

Therefore, if you set the start identifier (PID) and the end identifier (PID) at the beginning of the 'hello Francesca' stream transmitted from the actual broadcasting station, the receiver parses it and receives the parsed program identifier. Start and store in the hard disk of the broadcast receiver (S150).

Meanwhile, even if the start identifier and the end identifier are not distinguished, only a start identifier between programs may be inserted, and only a specific segment may be selected and identified within a program.

For example, when the service provider provides the highlight portion to the user, the user may select and record only the highlight portion.

If the program end identifier is confirmed during the recording, the recording is finished (S170).

After deleting the information corresponding to the recorded program in the EEPROM, it is determined whether there is a next scheduled recorded program, and if there is the next scheduled recording information, it is registered in the first order, and the scheduled recording starts for the registered program. Set the time to the microcomputer, and then turn off the system (S180), the standby state again.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible.

As described above, the program identifier of the present invention ultimately prevents the user from recording a portion that is not desired by the user, thereby not only unnecessarily wasting space on the storage medium, but also easily searching for a desired program even when playing the recorded program. Can be played back.

In addition, the service provider enables the user to record only the highlight portion, or the automatic recording, so that not only is a means for enabling various applications in the future broadcasting network, but also it is possible to apply a customized service at a low cost.

Claims (5)

A tuner that tunes a broadcast signal that the user wants to reserve recording; A demultiplexer for parsing identification information indicating the start and the end of the tuned broadcast signal; A decoder for decoding the broadcast signal corresponding to the start to the end of the parsed identification information; And a storage unit for storing the decoded broadcast signal. Inputting a reservation recording condition for a broadcast program from a user; Tuning a broadcast program channel corresponding to the input condition; And if identification information is displayed on the tuned broadcast program, recording the program on which the identification information is displayed. The method of claim 2, The input reservation recording condition is a reservation recording method using a digital broadcast receiver, characterized in that for each channel, title, recording time. The method of claim 1, And the identification information is an identifier indicating a distinction between programs, and is a program start identifier and a program end identifier. The method of claim 1, And the identification information indicates segmentation of a program.

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