Light detection apparatus

Details Light detection apparatus Light detection apparatus

2011-06-28

2011-06-28

Nguyen, Luong T (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S308000

Reexamination Certificate

active

07969491

ABSTRACT:
An amount of charges consonant with the intensity of the light entering photodiodes is generated, and the level of the charges is determined by a charge level determination circuit. Based on this determined charge level, a capacitance setting circuit sets a capacitance of an integrating capacitor unit in an integrating circuit. Thereafter, in the integrating circuit, the charges generated by the photodiodes are integrated in the integrating capacitor unit, and a voltage having a value consonant with the amount of the integrated charges is output. When background light is strong and the overall intensity of incident light is high, a comparatively large capacitance is set for the variable capacitor unit of the integrating circuit, and the intensity of the incident light is detected without saturation. When background light is weak and the overall intensity of incident light is low, a comparatively small capacitance is set for the variable capacitor unit of the integrating circuit, and the intensity of the incident light is detected at high sensitivity, regardless of the surrounding conditions.

REFERENCES:
patent: 4667179 (1987-05-01), Law et al.
patent: 4764753 (1988-08-01), Yukawa
patent: 5030954 (1991-07-01), Ribner
patent: 5500645 (1996-03-01), Ribner et al.
patent: 5892540 (1999-04-01), Kozlowski et al.
patent: 6128039 (2000-10-01), Chen et al.
patent: 6184811 (2001-02-01), Nagari et al.
patent: 6208282 (2001-03-01), Miyamoto
patent: 6473122 (2002-10-01), Kanekal
patent: 6593562 (2003-07-01), Parrish et al.
patent: 6700110 (2004-03-01), Mizuno et al.
patent: 6819281 (2004-11-01), Fujita et al.
patent: 6956607 (2005-10-01), Mizuno et al.
patent: 0 286 138 (1988-10-01), None
patent: 0 790 707 (2007-08-01), None
patent: 61-256824 (1986-11-01), None
patent: 63-205527 (1988-08-01), None
patent: 2-288709 (1990-11-01), None
patent: 03-10126 (1991-01-01), None
patent: 5-75464 (1993-03-01), None
patent: 5-268097 (1993-10-01), None
patent: 5-291955 (1993-11-01), None
patent: 9-51476 (1997-02-01), None
patent: 10-153425 (1998-06-01), None
patent: 2000-32342 (2000-01-01), None
patent: WO 00/02434 (2000-01-01), None
Steven L. Garverick, et al., “A 32-Channel Charge Readout IC for Programmable, Nonlinear Quantization of Multichannel Detector Data”, IEEE Journal of Solid-State Circuits, vol. 30, No. 5, pp. 533-541, May 1995.

Affiliated with

Also associated with

Rating

Light detection apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light detection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light detection apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2725678