Two-sided image reading apparatus including first and second par

Details Two-sided image reading apparatus including first and second par Two-sided image reading apparatus including first and second par

1996-07-03

1998-09-15

Tso, Edward

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

358406, 358474, 382232, H04N 141

Patent

active

058087524

ABSTRACT:
An image reading apparatus disclosed in this invention has first and second line sensors. The output from the first line sensor is compressed by a first compression circuit, and the output from the second line sensor is compressed by a second compression circuit. Furthermore, control is made to output image data for one page compressed by the first compression circuit, and thereafter, to output image data for one page compressed by the second compression circuit. The first compression circuit can operate at a higher speed than the second compression circuit.

REFERENCES:
patent: 4568983 (1986-02-01), Bobick
patent: 4908719 (1990-03-01), Nonoyama
patent: 4949189 (1990-08-01), Ohmori
patent: 5280545 (1994-01-01), Masuda
patent: 5303070 (1994-04-01), Christ
patent: 5610826 (1997-03-01), Whetsel
patent: 5654703 (1997-08-01), Clark, II

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