Scanner for reading color image

Details Scanner for reading color image Scanner for reading color image

1989-04-12

1990-05-29

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 78, H04N 1028

Patent

active

049300083

ABSTRACT:
A color image scanner which includes a plurality of light sources composed of a first light emitting diode for emitting a red light, a second light emitting diode for emitting a yellow light and a fluorescent light source for emitting a blue light, a control circuit for switching the plurality of light sources, sequentially and an image sensor for receiving light reflected from the original, scanned image, wherein a characteristic value of the light emitted from the first light emitting diode is selected so as to have an overlap in wavelength with that of the light emitted from the second light emitting diode, and a characteristic value of the light emitted from the fluorescent light source is selected so as to have an overlap in wavelength with that of the light emitted from the second light emitting diode.

REFERENCES:
patent: 2581552 (1952-01-01), O'Hagan et al.
patent: 3990043 (1976-11-01), Clark
patent: 4553160 (1985-11-01), Yamamoto et al.
patent: 4558357 (1985-12-01), Nakagawa et al.
patent: 4560866 (1985-12-01), Takenouchi et al.
patent: 4589035 (1986-05-01), Yamanishi et al.
patent: 4652913 (1987-03-01), Saitoh et al.
patent: 4661703 (1987-04-01), Ishikawa et al.
patent: 4670779 (1987-06-01), Nagano
patent: 4733098 (1988-03-01), Seito et al.
patent: 4750048 (1986-04-01), Satoh et al.
William K. Pratt, Digital Image Processing, pp. 72-73.
Heinwig Lang, Farbmetrik und Farbfernsehen, 1978, pp. 124-155.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-524851