Error-correction-code coding & decoding procedures for the recor

Details Error-correction-code coding & decoding procedures for the recor Error-correction-code coding & decoding procedures for the recor

1995-03-10

1997-05-06

Tran, Thai O.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386116, H04N 0576, H04N 578

Patent

active

056279353

ABSTRACT:
The error-correction coding function of an SD-VCR for recording and reproducing an ATV signal is modified to exclude trick-play data from outer error-correction coding in two-dimensional Reed-Solomon coding of normal play data, to improve error-correcting capability for the normal-play data. The same error-correction coding used as inner error-correction coding in the two-dimensional Reed-Solomon coding of normal play data is performed on the trick-play data as well as on the outer error-correction coded normal-play data. The resulting inner codes are preferably diagonal-scan interleaved before recording, at least for the normal-play data. During reproduction, after de-interleaving when interleaving was performed during recording, the inner error-correction coded data are decoded and separated into trick-play data and outer error-correction coded normal-play data. Outer error-correction coded normal-play data are decoded during normal play.

REFERENCES:
patent: 4847701 (1989-07-01), Suesada
patent: 4931879 (1990-06-01), Koga et al.
patent: 5282049 (1994-01-01), Hatakenaka et al.
patent: 5377051 (1994-12-01), Lane et al.

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