Variable-length coding device

Details Variable-length coding device Variable-length coding device

1994-12-19

1996-11-05

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

3582611, 3582614, H04N 141

Patent

active

055723349

ABSTRACT:
A variable-length coding device for compressing video data includes a variable-length code memory, which stores predefined and pre-shifted variations of variable-length codes in entries thereof. Each entry also has two counter fields, one for indicating the number of combined data bytes to be written to a compressed data memory, and another for indicating the number of valid bits remaining in the final byte written to the compressed data memory. The variable-length coding device does not require shifting of variable-length codes at storage time, and realizes an increase in efficiency.

REFERENCES:
patent: 4495639 (1985-01-01), Mosier et al.
patent: 4701745 (1987-10-01), Waterworth
patent: 5146220 (1992-09-01), Ishikawa
patent: 5363098 (1994-11-01), Antoshenkov
patent: 5436626 (1995-07-01), Fujiwara et al.

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