Facsimile transmission system

Details Facsimile transmission system Facsimile transmission system

1979-08-17

1987-03-17

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358294, H04N 140

Patent

active

046512217

ABSTRACT:
A charge coupled device (CCD) photosensor array (32) continuously performs horizontal scan and feeds out data signals representing horizontal scan lines in such a manner that data signals representing one horizontal scan line are produced during one horizontal scan pulse and fed out during the next horizontal scan pulse. A buffer memory (33) stores at least two scan lines in such a manner that one scan line may be read out for compression while another scan line is being stored. A buffer ready signal is produced when there is sufficient vacant space in the buffer memory (33) to store one scan line and vertical scan is effected in response thereto. The buffer memory (33) is controlled to store only data signals produced during vertical scan to maintain the line scan density constant.

REFERENCES:
patent: 3622695 (1971-11-01), Rugaber
patent: 3893079 (1975-07-01), Shepard et al.
patent: 4156880 (1979-05-01), Yamada

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