Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1996-05-23
1998-07-07
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386116, H04N 5783
Patent
active
057781397
ABSTRACT:
A method and apparatus for recording/reproducing an ATV or DVB signal are provided. During recording, normal- and trick-play data are extracted from the signal transmitted with a transport packet structure. The extracted normal-play data are mapped into five sync blocks for every two transport packets and the normal-play data are then outer-error-correction-encoded after replacing the trick-play data having an SD-ECC structure with data of a predetermined pattern. The extracted trick-play data is then arranged in a video data region having the SD-ECC structure and the trick-play data are outer-error-correction-encoded by replacing the video auxiliary data having the SD-ECC structure with data of a predetermined pattern and mapping the result into a five-sync-block unit. The outer-error-correction-encoded normal- and trick-play data are rearranged in the video data region having the SD-ECC structure and then are inner-error-correction-encoded. During reproducing, the inner-error-correction-encoded normal- and trick-play data are inner-error-correction-decoded, the normal-play data are outer-error-correction-decoded by replacing the trick-play data with the pattern data used for encoding during a normal mode and the inner-error-correction-decoded trick-play data are outer-error-correction-decoded by replacing the video auxiliary data with the pattern data used for encoding trick mode data, after being arranged in the video data region. Thus, the trick-play data having the SD-ECC structure are mapped in the trick-play data region like normal-play data by using five sync blocks as a reference block so that one ECC circuit is used regardless of mode, to thereby decrease hardware requirements.
REFERENCES:
patent: 5576902 (1996-11-01), Lane et al.
patent: 5627935 (1997-05-01), Kim
patent: 5631998 (1997-05-01), Han
patent: 5646931 (1997-07-01), Terasaki
Limberg Allen LeRoy
Samsung Electronics Co,. Ltd.
Tran Thai
LandOfFree
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