Optical sensor, method of reading optical sensor,...

Details Optical sensor, method of reading optical sensor,... Optical sensor, method of reading optical sensor,...

2007-03-27

2007-03-27

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140RC, C327S514000

Reexamination Certificate

active

11104574

ABSTRACT:
An optical sensor is provided corresponding to a scanning line and a reading line. The optical sensor includes a light-receiving element, a current flowing between both terminals thereof being changed according to the amount of incident light and a transistor whose gate is connected to one end of the light-receiving element, one of a source and a drain being connected to the scanning line and the other being connected to the reading line. In an initialization period in which the scanning line is selected, a predetermined initialization voltage is applied to the gate and, after the application of the initialization voltage ends, a result according to the amount of received light is output based on a voltage on the reading line.

REFERENCES:
patent: 6795121 (2004-09-01), Matsunaga et al.
patent: 6914230 (2005-07-01), Baer
patent: A 9-082931 (1997-03-01), None
patent: A 2001-218112 (2001-08-01), None
patent: A 2001-308306 (2001-11-01), None

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