Data decoding apparatus

Details Data decoding apparatus Data decoding apparatus

1987-02-25

1987-12-29

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358261, 358263, H04N 121, H04N 123, H04N 140, H04N 1419

Patent

active

047164719

ABSTRACT:
A data decoding apparatus decodes MH codes having different code lengths in real time and at high speed. The apparatus has an image memory, a tristate buffer group, a parallel to serial converter, code length and run length decode ROMs, and a PAL group if desired. The tristate buffer from which the next code is to be read out can be selected immediately after decoding a given code in accordance with the code length of the given code. The PAL group is used to detect an end of line if an error occurs in a given line. The error can be eliminated with one line.

REFERENCES:
patent: 4013827 (1977-03-01), Starck et al.
patent: 4146909 (1979-03-01), Beckenhauer et al.
patent: 4297727 (1981-10-01), Ogawa et al.
patent: 4376933 (1983-03-01), Saran et al.
patent: 4399467 (1983-08-01), Subramian
patent: 4441208 (1984-04-01), Iida
patent: 4494151 (1985-01-01), Liao
patent: 4591829 (1986-05-01), Takeda

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