Color image reading apparatus with a plurality of line sensors i

Details Color image reading apparatus with a plurality of line sensors i Color image reading apparatus with a plurality of line sensors i

1987-06-12

1988-03-29

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 358 75, G03F 308, H04N 146, H04N 973

Patent

active

047347627

ABSTRACT:
A color image reading apparatus with a plurality of line sensors and an associated plurality of rotary color filter disks produces a plurality of sequential color component signals from each line sensor. An amplifier with an adjustable gain is provided for each of the line sensors. A white balance operation is performed prior to reading a color document by determining gains for each of the amplifiers to use in amplifying corresponding ones of the sequential color component signals on the basis of a plurality of reference color component signals generated by reading a white reference plate with the line sensors. The determined gains are stored in a memory as digital data. The data is read out and used to control the gains of the amplifiers while a color document is being read. Color balance correction switch units enable an operator to selectively modify the determined gains in order to adjust the color balance of the color component signals.

REFERENCES:
patent: 4136360 (1979-01-01), Hoffrichter et al.
patent: 4233612 (1980-11-01), Hirayama et al.
patent: 4358794 (1982-11-01), Kurakami et al.
patent: 4368482 (1983-01-01), Machida et al.
patent: 4454532 (1984-06-01), Itani et al.
patent: 4633301 (1986-12-01), Saitoh
patent: 4633314 (1986-12-01), Kurata et al.
patent: 4679073 (1987-07-01), Hayashi

Affiliated with

Also associated with

Rating

Color image reading apparatus with a plurality of line sensors i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color image reading apparatus with a plurality of line sensors i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color image reading apparatus with a plurality of line sensors i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1092217