Light source control method and apparatus of image scanner

Details Light source control method and apparatus of image scanner Light source control method and apparatus of image scanner

2006-08-15

2006-08-15

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S235000

Reexamination Certificate

active

07091461

ABSTRACT:
A light source control method and apparatus of an image scanner is disclosed. The invention utilizes a determination means and an illumination control device to perform partial or full illumination and adjust brightness so that the light source can be operated more efficiently and more economically.

REFERENCES:
patent: 4338020 (1982-07-01), Yukawa et al.
patent: 4737748 (1988-04-01), Ito

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