Coding apparatus with low-frequency and DC suppression

Details Coding apparatus with low-frequency and DC suppression Coding apparatus with low-frequency and DC suppression

1990-06-06

1992-11-24

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375 27, 358135, H04L 2700

Patent

active

051669587

ABSTRACT:
In a coding apparatus of the invention, codes each consisting of l bits are formed from information data formed by sampling and the m (l and m being integers each equal to at least 2) predictive codes so formed are converted into a code of (m.times.l+a) bits (a being a positive integer), so that an information signal can be compressed at a low data error generation ratio and at a high compression ratio.

REFERENCES:
patent: 4569058 (1986-02-01), Grallert
patent: 4691233 (1987-09-01), Acampora
patent: 4771439 (1988-09-01), Okazaki et al.
patent: 4799242 (1989-01-01), Vermeulen
patent: 4802004 (1989-01-01), Mattsumoto et al.
patent: 4831636 (1989-05-01), Taniguchi et al.
patent: 4885637 (1989-12-01), Shikakura et al.
patent: 4893123 (1990-01-01), Boisson
patent: 4944012 (1990-07-01), Morio et al.

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