Speed-up method and apparatus for two-dimensional facsimile codi

Details Speed-up method and apparatus for two-dimensional facsimile codi Speed-up method and apparatus for two-dimensional facsimile codi

1985-02-27

1987-12-29

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358288, H04N 141

Patent

active

047164670

ABSTRACT:
A method and device for speeding the transmission and reception of documents by digital facsimile systems employing two-dimensional coding. Information regarding a reference line of a document need not be reaccessed from memory during the processing of the scan line next-following a uni-color reference line. A user-accessible paper-width register utilized in conjunction with a comparator according to the speed-up method permits ready detection of uni-color lines and permits encoding and decoding according to either of two international standards. Utilization of the paper-width register affords ready availability of the accumulated run-length of picture elements within uni-color lines without the need to accumulate the run length or reaccess the uni-color reference line.

REFERENCES:
patent: 4301479 (1981-11-01), Fukinuki
patent: 4353095 (1982-10-01), Tatematsu
patent: 4366505 (1982-12-01), Tsuda
patent: 4413287 (1983-11-01), Torpie
patent: 4543611 (1985-09-01), Kurahayashi

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