Decoding method for video frequency data destroyed by path noise

A video data and decoding technology, applied in the direction of digital video signal modification, television, telephone communication, etc., can solve the problem of lack of macro-block limiter, destruction, increasing the number of modules, etc.
CN1112811CInactive Publication Date: 2003-06-25SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Publication Date
2003-06-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

In a video decoding method, the video data to be decoded is arranged in a first unit, which first unit includes a plurality of second data units, and each of which second data unit includes an information on a status of the second data unit. First, it is determined whether the status information in a current second unit is invalid or not. If it is determined that the status information in the second unit is invalid, the status information is changed into another one among a set of possible status information to decode the video data from the current second unit to a last second unit in a current first unit on the basis of the changed status information. Afterwards, if the decoding of video data from the current second unit to the last second unit in the current first unit was successful for none of the possible status information, a flag representing an encoding scheme of the video data is changed such that the flag indicates that the second unit is encoded in an inter-frame mode. Then, the video data from the current second unit to the last second unit in the current first unit is decoded according to the changed flag. Finally, the video data from the current second unit to the last second unit in the current first unit is replaced with those in a previous frame if the decoding of the video data in the step (d) was unsuccessful.
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Description

technical field

[0001] The present invention relates to a video data decoding method, more specifically, to a method for error detection and error correction of video data received by a decoder. Background technique

[0002] Error-robustness has always been one of the main concerns in video communication, especially in systems with many errors such as wireless communication systems. Therefore, many efforts have been made to improve the error resistance of transmitted data in video communication systems.

[0003] From the point of view of the feedback channel concept, the methods for improving the error resistance of video communication systems can be roughly divided into two categories: one is the feedback method, and the other is the feedforward method.

[0004] In a typical feedback approach, data is retransmitted in accordance with the interaction between the decoder and encoder.

[0005] FIG. 1 is a conceptual block diagram of a wireless communication system applying a...

Claims

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