Scanning method of image scanner and image scanner having a...

Details Scanning method of image scanner and image scanner having a... Scanning method of image scanner and image scanner having a...

2007-04-24

2007-04-24

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S205000

Reexamination Certificate

active

11075714

ABSTRACT:
An image scanner and scanning method thereof are provided. By simultaneously using two light emitting diodes of different colors as light sources and cooperatively performing simple image data computations, three color image signals are obtained so as to shorten the exposure time and improve signal-to-noise ratio of the image signal.

REFERENCES:
patent: 4652913 (1987-03-01), Saitoh et al.

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