Error-correction-code coding and decoding procedures for the tra

Details Error-correction-code coding and decoding procedures for the tra Error-correction-code coding and decoding procedures for the tra

1996-08-16

1998-03-17

Chevalier, Robert

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386109, H04N 591, H04N 5917

Patent

active

057296472

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: 5241563 (1993-08-01), Paik et al.
patent: 5289322 (1994-02-01), Higashida et al.
patent: 5504759 (1996-04-01), Inoue et al.
patent: 5546409 (1996-08-01), Karasawa

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