Infrared detecting device

Details Infrared detecting device Infrared detecting device

2007-12-25

2007-12-25

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S338100

Reexamination Certificate

active

10536980

ABSTRACT:
An infrared detecting device for reducing current consumption while maintaining performance is disclosed. The device includes a drive power supply circuit which comprises a current generating circuit and a distribution circuit, and which supplies a drive current to each of signal circuits comprising an I/V conversion circuit, a voltage amplification circuit, a detection circuit and an output circuit. The current generating circuit includes a reference current source, a fixed current source providing a fixed current based on the reference current and a variable current source providing a variable current stepped up or down to any different currents based on the reference current. The distribution circuit distributes the drive current to a part of the signal circuits based on the current from the fixed current source and distributes the drive current to a remaining part of the signal circuits based on the current from the variable current source.

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patent: 1 291 629 (2003-03-01), None
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patent: 2002-156281 (2002-05-01), None
PCT International Search Report for PCT/JP2004/017129.

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