Title:
光センサ回路、光センサ回路の出力信号処理方法および電子機器
Document Type and Number:
Japanese Patent JP4168979
Kind Code:
B2
Abstract:
An optical sensor circuit has a first optical sensor that outputs a signal according to the amount of received light on an opened light-receiving surface, a second optical sensor that is provided near the first optical sensor and outputs a signal according to the amount of received light on a shielded light-receiving surface, and a difference calculating circuit that calculates a difference between the output signal of the first optical sensor and the output signal of the second optical sensor and outputs the difference.
More Like This:
| JPH0371623 | MANUFACTURE OF SEMICONDUCTOR DEVICE |
| JPS5441091 | SEMICONDUCTOR PHOTOELECTRIC TRANSDUCER |
| JPH04352370 | INFRARED SENSOR |
Inventors:
Tokuro Ozawa
Application Number:
JP2004165780A
Publication Date:
October 22, 2008
Filing Date:
June 03, 2004
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H01L31/10; G01J1/02; G01J1/16; G01J1/42; G01J1/46; H01J40/14; H01L27/146; H01L31/14; G01J1/44
Domestic Patent References:
| JP6196746A | ||||
| JP8181348A | ||||
| JP2003179551A | ||||
| JP2001189699A | ||||
| JP2002043610A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka
Osamu Suzawa
Kazuhiko Miyasaka