KR20010111179A - Digital vcr built in additional memory apparatus - Google Patents

Abstract

The present invention relates to an additional device of a digital VR, which makes it possible to easily implement additional functions such as quick view, slow view, search, etc. by adopting a hard disk as a secondary storage device in a digital VR.

An object of the present invention is to provide a recording / reproducing system for reading transport stream data from a DVHS tape and outputting it in the form of a TP packet or storing it in an opposite path; A broadcast reception processing unit configured to receive a TP packet or a broadcast TP packet output from the recording / reproducing system and to process the TP packet suitable for display on an external display device; This is achieved by a hard disk storing the output data of the recording / reproducing system or the broadcast receiving processing unit and outputting the data to the broadcast receiving processing unit so as to perform an additional function or outputting to the PC side for performing an editing function or the like. do.

Description

DIGITAL VCR BUILT IN ADDITIONAL MEMORY APPARATUS}

The present invention relates to a technology for implementing an additional function in a digital VR, and in particular, by adopting a hard disk as a secondary storage device in a DVHS (Digital VHS) VP, so that an additional function such as quick view, slow view, and search can be easily implemented. The present invention relates to a digital VR with an additional storage device.

In general, a digital VCD (eg, a DVHS VCD) digitizes a video signal input from various signal sources and records it on a tape, or outputs it to various information devices such as an external editor, a workstation, or a personal computer, for various editing or It is a high quality digital video and audio processing device that enables high performance. In addition, the DVHS VRC is a device that is expected to play a pivotal role in the next generation of multimedia devices, such as being used in conjunction with a broadcast satellite, high-definition TV (HDTV) or a set-top box.

However, unlike the DVD player which can take advantage of the disk and quickly go to the desired position by looking at the table of contents, the DVHS V-CAL does not provide a screen for program search because the magnetic tape is used as a storage medium. The disadvantage is that the target position must be moved based on the data recorded in the code area.

According to the DVHS standard, packetized digital data is stored on a tape, and functions such as fast viewing, slow viewing, and retrieval cannot be implemented due to characteristics such as the angle of the head and the moving speed of the tape.

As described above, in the conventional digital VR, there is a defect that cannot provide additional functions such as quick viewing, slow viewing, and searching due to characteristics such as data recording format and moving speed of the angular tape of the head.

Accordingly, it is an object of the present invention to provide a digital VR with an additional storage device that adopts a hard disk as a secondary storage device and provides additional functions such as quick viewing, slow viewing, and searching using the hard disk as a secondary storage device.

1 is a block diagram of an embodiment of an additional device of a digital VR incorporating an additional storage device according to the present invention;

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

10: recording / reproducing system 11: DVHS tape

12: data converter 13: error correction processing unit

14: format processing unit 20: broadcast receiving processing unit

21: broadcast receiver 22: TP decoder

23: video decoder 24: audio decoder

25: video display processor 26: MPEG encoder

30: hard disk 31: high-speed serial interface

41: display device 42: analog monitor

43: PC

The digital V-RA having the additional storage device according to the present invention comprises: a recording / reproducing system which reads transport stream data from a DVHS tape and outputs it in the form of a TP packet or stores it in an opposite path; A broadcast reception processing unit configured to receive a TP packet or a broadcast TP packet output from the recording / reproducing system and to process the TP packet suitable for display on an external display device; Stores the output data of the recording / reproducing system or the broadcasting receiving processing unit and outputs the data to the broadcasting receiving processing unit again to perform additional functions (for example, service functions such as quick viewing, slow viewing, searching, etc.) or edit function. And a hard disk output to the PC side so as to perform such operations.

Hereinafter, described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of a digital VRA having additional storage device for achieving the object of the present invention. As shown in FIG. A recording / reproducing system 10 which reads out and outputs them in the form of TP packets after error correction and format processing, or stores them through opposite paths; A broadcast reception processing unit (20) for processing a TP packet input from the recording / reproducing system (10) or a broadcast TP packet which has been processed to be suitable for display on an external display device; The broadcasting / receiving processing unit 20 stores the output data of the recording / reproducing system 10 or the broadcasting receiving processing unit 20 and performs the additional functions such as quick viewing, slow viewing, and searching. The hard disk 30 outputted to the PC side or outputted to the PC side to perform an editing function or the like.

The recording / reproducing system 10 includes a data converter 12 for converting data to be stored in the DVHS tape 11 into an analog signal or converting an analog signal reproduced and outputted from the DVHS into a digital signal; An error correction processor (13) for error correction (ECC) of data output from the data converter (12); A format processing unit (14) for formatting the error correction processed DVHS standard data in the form of TP packets; In order to control the operation of each part in the recording / reproducing system 10 and to perform additional functions, the output data of the recording / reproducing system 10 or the broadcast receiving processing section 20 is stored in the hard disk 30 or The operation control unit 15 reads out the already stored data.

The broadcast receiving processor 20 selects and decodes TP packets of any one channel among TP packets of one or more channels output from the format processor 14 or the broadcast receiving unit 21 and decodes them in an ES or PES form. 22); A video decoder (23) for receiving the ES or PES type data from the TP decoder (22) and decompressing the data; An audio decoder 24 for receiving ES or PES type data from the TP decoder 22 and restoring the original type audio data; A video display processor (25) which receives image data from the video decoder (23) and processes it to be suitable for display on a display device (41); The data output from the video display processor 25 is configured as a video encoder 26 for compressing the data output in a predetermined format (eg MPEG2) and storing it in the hard disk 30.

Referring to the operation of the present invention configured in this way in detail as follows.

In the reproduction mode, the analog signal recorded on the DVHS tape 11 is converted into a digital signal through the data converter 12 by the control of the arithmetic control unit 15, and the error correction processing unit 13 converts the A / D. Error correction code (ECC) is processed on the data.

In addition, the format processing unit 14 compresses the data of the DVHS standard subjected to the error correction process, divides and multiplexes the data in packet units, and outputs the data in the form of TP packets to the TP decoder 22.

On the other hand, the broadcast receiving unit 21 receives and processes a broadcast signal and outputs TP packet data to the TP decoder 22. The TP decoder 22 controls the format processor unit under the control of the operation control unit 15. The TP packet output from 14 or the TP packet output from the broadcast receiver 21 is selected and decoded into an ES or PES format.

At this time, the video decoder 23 receives the ES or PES type data from the TP decoder 22 and decompresses the video data, and the audio decoder 24 receives the ES or PES type data and receives the original type. Restore audio data.

The video display processor 25 receives the decompressed image data from the video decoder 23 and converts the decompressed image data into a form suitable for display and outputs it to a display device 41 such as a digital TV.

Accordingly, the user can select and watch a program to be reproduced through the format processor 14 or a broadcast program received through the broadcast receiver 21 by selecting a corresponding mode.

On the other hand, using the hard disk 30 will be described for each process for performing additional functions, such as quick view, slow view, search.

The arithmetic and control unit 15 may output a playback signal through the format processor 14 or a broadcast reception signal through the TP decoder 22 or a video signal or MPEG encoder 26 through the video display processor 25 according to a user's request. The compressed video signal is recorded on the hard disk 30 and the data is reproduced if necessary to perform the corresponding additional function.

For example, a process for reproducing a part of a program from the DVHS tape 11 and performing a reverse lookup function will be described. When reproducing a program from the DVHS tape 11, If a certain length packet is stored in the hard disk 30 at a predetermined time interval, and the user selects the reverse view function, the contents stored in the hard disk 30 are read in the corresponding direction and speed, and the display device ( To the 41) side.

The process for performing the slow viewing function will be described. The data of the same program stored in the hard disk 30 is slowly read out while the program is played back at the normal speed from the DVHS tape 11 without being displayed. It is displayed on the display device 41.

In this state, when the user presses the play button, the driving position of the current DVHS tape 11 is ahead of the display position, so that the contents stored in the hard disk 30 are output at high speed, and the driving of the current DVHS tape 11 is performed. When coinciding with the position, the program played back on the tape 11 is displayed on the display device 41.

Referring to the processing for performing the search function, the hard disk 30 with position information along with a TP packet of a predetermined length at a predetermined time interval during recording on the DVHS tape 11 under the control of the operation control unit 15. If the search request command is input, the packet is read from the hard disk 30 and output to the display device 41 through the video decoder 23 and the video display processor 25.

Therefore, the user can view the program at regular time intervals among the entire contents, thereby completing the search within a short time. When the user presses the play button while the desired screen is displayed while performing the search operation as described above, the player starts driving by driving to the desired position on the DVHS tape 11 based on the stored position information.

In describing the process for performing the DVHS title function, when a DVHS title is produced, a table of contents and a preview, packet data, and location information are stored at the beginning of the DVHS tape 11 so that the user can quickly obtain the desired information. The title information is stored in the hard disk 30, and when the user requests it, the content is read out and displayed on the display device 41.

The process for applying the search function to the DVHS tape recorded in another DVHS system will be described. As the tape recorded in another DVHS system has no information stored in the hard disk 30 in summary, the tape as described above. By storing the constant data in the hard disk 30 at regular time intervals during the reproduction processing, the same can be used as the DVHS tape 11 later.

In order to record and store more programs by overcoming the limitation of the storage capacity of the DVHS tape 11, the source data output from the video display processor 25 ( ) Can be stored in the hard disk 30 as it is and used. In addition, the source data ( By compressing and storing through the MPEG encoder 26 it is possible to store more programs than the same conditions.

By outputting the data output from the video display processor 25 through the NTSC encoder 27, it is possible to enjoy the DVHS program through the existing analog monitor 42.

On the other hand, when editing the DVHS program stored in the hard disk 30 using the PC 43, the operation control unit 15 according to the user's request corresponding data stored in the hard disk 30 Is read and supplied to the PC 43 through the high speed serial interface 31.

As described in detail above, the present invention allows a hard disk to be used as a secondary storage device in a DVHS system to provide additional functions such as quick view, slow view, search, and the like. This has the effect of providing functionality.

Claims (8)

A recording / reproducing system which reads data from the DVHS tape and outputs it in the form of a TP packet or stores data input in an opposite path; A broadcast reception processing unit configured to receive a TP packet or a broadcast TP packet output from the recording / reproducing system and to process the TP packet suitable for display on an external display device; And a hard disk storing output data of the recording / reproducing system or broadcasting receiving processing unit in a predetermined format and outputting the data in a form suitable for performing various additional functions. The recording / reproducing system according to claim 1, further comprising: a data converter for converting data to be stored on a DVHS tape into an analog signal or converting an analog signal reproduced and outputted from the DVHS into a digital signal; An error correction processor for error correction of data output from the data converter; A format processing unit for formatting the error correction processed DVHS standard data into a TP packet; In addition to controlling the operation of each part in the recording / reproducing system, an operation of storing the output data of the recording / reproducing system or the broadcast receiving processing unit on the hard disk or reading the already stored data in a predetermined format in order to perform additional functions. Digital VR with additional storage device, characterized in that configured as a control unit. The apparatus of claim 2, wherein the operation control unit stores the program stored in the DVHS tape in the hard disk in units of packets of a predetermined length, and reads it in the corresponding direction and speed when the reverse view function is selected and outputs the result to the display device. Digital VR with additional storage device, characterized in that configured to. The method of claim 2, wherein the operation control unit is configured to store the program stored in the DVHS tape on the hard disk in advance, and to read the data of the program at a slow speed and output it to the display device when the slow view function is selected. Digital VR with built-in additional storage. The apparatus of claim 2, wherein the operation control unit stores the location information on the hard disk together with the TP packet of a predetermined length at a predetermined time interval with respect to the program stored in the DVHS tape, and reads the packet when a search request command is input. A digital VR with an additional storage device, characterized in that configured to be output to the display device side. 3. The operation control unit according to claim 2, wherein the operation control unit reads the title information recorded on the DVHS tape, stores the title information on the hard disk, and reads the contents when the user requests them, and outputs the contents to the display apparatus. Digital VR with built-in additional storage. The digital VR of claim 2, wherein the operation controller is configured to read a program stored in the hard disk and output the program to the PC through a high speed serial interface. The broadcast receiving processor of claim 1, further comprising: a TP decoder for selecting a TP packet of any one channel among TP packets of one or more channels output from the recording / reproducing system or the broadcast receiving unit and decoding the TP packet in an ES or PES form; A video decoder for receiving the ES or PES type data from the TP decoder and decompressing the data; An audio decoder for receiving ES or PES type data from the TP decoder and restoring audio data of an original type; And a video display processor for receiving image data from the video decoder and processing the image data to be suitable for display on a display device.