Sensor device which detects a physical change amount or a...

Details Sensor device which detects a physical change amount or a... Sensor device which detects a physical change amount or a...

2006-12-05

2006-12-05

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C257S443000, C257S458000, C327S515000, C435S006120

Reexamination Certificate

active

07145142

ABSTRACT:
A sensor device includes a sensor array in which infrared sensors are arrayed and a detection circuit connected to the output signal line of the sensor array. The detection circuit includes a capacitor having a charging circuit which is selectively driven, a sense amplifier circuit which detects and amplifies a change in sensor current flowing to the output signal line, a current-to-voltage conversion circuit which converts the output current from the sense amplifier circuit into a voltage, a discharging circuit which is controlled by the output voltage of the current-to-voltage conversion circuit to discharge the capacitor, and an output circuit which outputs the terminal voltage of the capacitor.

REFERENCES:
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patent: 5729285 (1998-03-01), Peterson et al.
patent: 6300615 (2001-10-01), Shinohara et al.
patent: 6348682 (2002-02-01), Lee
patent: 6704050 (2004-03-01), Washkurak et al.
patent: 6759657 (2004-07-01), Iida et al.
patent: 6809320 (2004-10-01), Iida et al.
patent: 6956417 (2005-10-01), Bernstein et al.
U.S. Appl. No. 10/106,787, filed Mar. 27, 2002, pending.
U.S. Appl. No. 10/244,403, filed Sep. 17, 2002, pending.

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