Facsimile machine

Details Facsimile machine Facsimile machine

1992-08-28

1995-11-14

O'Shea, Sandra L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358405, 358444, 358449, H04N 146

Patent

active

054672031

ABSTRACT:
As image data is received by the facsimile machine, it is stored in the form of plural lines. A line which contains black pixels more than a predetermined number is taken as a drawing line (image-carrying line or effective line). All the image data lines are scanned from the top to the bottom to find a top image-carrying line or top effective line and a bottom image-carrying line or bottom effective line and the number of the lines from the top effective line to the bottom effective line is calculated as the number of the effective lines of sending sheet. If the number of the effective lines of the sending sheet exceeds the number of recording lines of a recording sheet, the image data is reduced with a reduction ratio which is determined by the number of the recording lines and the number of the effective lines.

REFERENCES:
patent: 4528693 (1982-09-01), Pearson
patent: 4610026 (1983-04-01), Tabata
patent: 4695898 (1987-09-01), Ishikawa
patent: 4731658 (1988-04-01), Koseki
patent: 4809083 (1989-02-01), Nagano
patent: 4814893 (1988-06-01), Katoh
patent: 5053885 (1991-10-01), Telle
patent: 5057937 (1991-10-01), Muramatsu
patent: 5126858 (1992-06-01), Kurogane
patent: 5345318 (1994-09-01), Seo

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