Image reading apparatus

Details Image reading apparatus Image reading apparatus

1996-04-25

1999-03-09

Vu, Kim Yen

Facsimile and static presentation processing

Natural color facsimile

Scanning

358516, 358523, H04N 156

Patent

active

058808590

ABSTRACT:
An image reading apparatus compensates inter-deviations of and a change in a color temperature of a light source while compensating a difference in the sensitivities between linear image sensors and a change in the sensitivity difference. Three linear image sensors for R, G and B of a multi-line linear image sensor read white reference image data, and a line memory stores the image data. A CPU controls an output state of each second timing signal within a timing generator line by line and independently of a first timing signal, in such a manner that peak values of the white reference image data for three lines stored in the line memory each belong to a predetermined appropriate range. This optimizes a charge accumulating time within each linear image sensor, whereby an RGB balance becomes even at an output side of each linear image sensor.

REFERENCES:
patent: 4731661 (1988-03-01), Nagano
patent: 4809061 (1989-02-01), Suzuki
patent: 4814864 (1989-03-01), Pritchard

Affiliated with

Also associated with

Rating

Image reading apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reading apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1326878