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Decoding method and decoder of D-VHS coder system

A technology of codecs and decoders, applied in parts of TV systems, digital video signal modification, digital signal formatting, etc.

Inactive Publication Date: 2004-02-18
DAEWOO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

First, in addition to the function of analog recording of current broadcasting systems such as NTSC and PAL, time-shifting of digital broadcasting through bit stream recording is also possible

Method used

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  • Decoding method and decoder of D-VHS coder system
  • Decoding method and decoder of D-VHS coder system
  • Decoding method and decoder of D-VHS coder system

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Embodiment Construction

[0062] A decoding method of a D-VHS codec system and the construction and operation of a decoder will be described in detail below according to an embodiment of the present invention with reference to the accompanying drawings.

[0063] figure 2 Shows the structure of one track for the recording data structure of the basic format in accordance with the D-VHS system standard. Such as figure 2 , a track contains 356 sync blocks. However, when the 1.001 flag of the format ID is set to 1, one track can contain 356.356 sync blocks. Each sync block consists of 896 bits. The main code field contains the main data sync block. The subcode field contains subcode sync blocks. One sync block contains 4 subcode sync blocks.

[0064] image 3 shown contained in figure 2 The structure of one main data sync block in the main code of one track. Such as image 3 As shown, a main data sync block contains a SYNC (synchronization delimiter), an ID, a main data and an inner parity. One m...

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Abstract

A decoding method and a decoder of a D-VHS codec system for recording / reproducing a high-definition picture and a high-fidelity sound is disclosed. In the playback of the digital data which is recorded in the format of the track, a decoding method and a decoder of the D-VHS codec system correct the random error or the burst error by the forward error correction addition information and reproduce both a high-definition picture and a high-fidelity sound. Consequently, an enormous quantity of computation which cannot be processed by programs, is performed in real time by an optimal data flow operation process method and the compressed or processed digital data is processed at a high speed. Also, a hardware configuration of the codec which conventionally includes two or three pieces of circuit board implements one custom-made semiconductor chip and cuts a unit cost of the manufacturing of the D-VHS codec.

Description

technical field [0001] The invention relates to a decoding method and a decoder of a digital video home system codec system for recording / reproducing high-definition images and high-fidelity sounds. Background technique [0002] Since digital television broadcasting was broadcast using the MPEG2 (Moving Picture Experts Group 2) standard in 1994, many broadcasters in the world have started or plan to use digital broadcasting. The reason why broadcasters are involved in digital broadcasting is that digital data loses very little information, can provide high-quality moving pictures and high-fidelity sound, and digital information is extremely suitable for the multimedia age. At present, many foreign electronic manufacturers predict that digital data recording devices (hereinafter referred to as DR) will have a good market, and they are also actively investing in the development of DR. [0003] Victory Co., Ltd. (JVC) of Japan has invested to determine the technical specificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/92G11B20/02G11B20/10G11B20/12G11B20/18H04N5/775H04N9/804H04N19/89
CPCG11B20/1201H04N19/00933G11B20/1833G11B20/10H04N7/64H04N5/775H04N9/8042H04N19/89
Inventor 南承铉
Owner DAEWOO ELECTRONICS CO LTD
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