Video signal recording and reproducing apparatus with high effic

Details Video signal recording and reproducing apparatus with high effic Video signal recording and reproducing apparatus with high effic

1994-10-17

1998-12-01

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

058450416

ABSTRACT:
A video signal recording and reproducing apparatus for recording a video signal whose information amount is compressed using a high-efficiency encoding employing an orthogonal transform, wherein encoded data obtained by encoding only low-frequency coefficients are recorded separately from normal encoded data. When the amount of information after compression falls short of a presdetermined amount available for recording, the encoded data of low-frequency coefficients are added to fill the vacancy. For the low-frequency coefficients, check words are appended that which provide a greater minimum distance compared with other coefficients. The low-frequency coefficients are doubly encoded for error-correction.

REFERENCES:
patent: 5068744 (1991-11-01), Ito
patent: 5073821 (1991-12-01), Juri
patent: 5136391 (1992-08-01), Minami
patent: 5239308 (1993-08-01), Keesen
patent: 5371602 (1994-12-01), Tsuboi et al.

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