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Video data codec unit and method

A technology of video data and decoding device, applied in the direction of digital video signal modification, TV, pulse modulation TV signal transmission, etc., can solve the problems of restoring original video data, decoder working incorrectly, unable to protect important data from errors, etc.

Inactive Publication Date: 2008-11-05
LG ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] However, at this point, if the partition 1 (102) is damaged, the VLD 31 cannot recover the original video data with the slice information
[0022] For the mobile data coding method using common partition technology, although it can prevent errors from propagating between partitions by dividing the source coded video data into multiple partitions and inserting marks between the partitions, but it Essentially unable to protect important data from errors
[0023] In addition, in the conventional technique, if the channel coding is directly performed on each partition without consideration, the channel encoder may generate the same code as the marker, so the decoder may regard it as a marker, causing the decoder to work incorrectly

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  • Video data codec unit and method
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  • Video data codec unit and method

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Embodiment Construction

[0050] In the present invention, channel coding for unequal error protection is performed inside each partition. Regarding channel coding, there can be block coding methods including Reed-Solomon coding and convolutional coding methods. The video data encoding method provided by the present invention adopts Reed-Solomon data encoding.

[0051] First, the video data encoding method that adopts Reed-Solomon encoding in the present invention can be roughly divided into a method using a partition table and a method using a mark.

[0052] As shown in Figure 3, the video data encoding method using the partition table does not insert a mark to identify the partition. Instead, the size information of the partition 1203, partition 2204, and partition 3205 is stored in the partition table and transmitted. In this way, The decoder can identify partition 1203, partition 2204, and partition 3205 based on the partition size information.

[0053] Figure 4 An example of the partition table 202 ...

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Abstract

A video data coding / decoding apparatus includes: an encoder dividing a partition partitioned by a data partitioning technique into certain blocks, channel-coding the divided block data and transmitting a bit stream; and a decoder channel-decoding the bit stream received from the encoder so as to restore a video data. An error occurrence probability can be reduced by channel decoding the source-coded video data for each partition. In addition, by removing the marker emulation generated in the channel coding, a mobile image data of a better picture quality can be provided.

Description

Technical field [0001] The present invention relates to an image compression method based on data partition technology, and more specifically, to a video data encoding and decoding device and method for unequal error protection for each partition in image compression. Background technique [0002] At present, the next-generation mobile communication system requires reliable transmission of high-speed multimedia data, which requires a high degree of channel coding and an efficient modulation method. [0003] The International Mobile Telecommunications (IMT)-2000 system, which is about to be put into commercial use as the next-generation mobile communication system, is a personal global multi-service. It standardizes various mobile communication systems that were previously operated separately and differently by various countries. The service can be used from anywhere in the world by using a terminal or user access card. [0004] In addition, the IMT-2000 system enables terminals t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/24H04N7/12H04N21/2383H04N21/438
CPCH04N19/00781H04N19/00951H04N7/26106H04N7/66H04N21/4382H04N7/50H04N21/2383H04N19/61H04N19/91H04N7/12
Inventor 赵显惪金成得
Owner LG ELECTRONICS INC