Electro-optical reader with improved performance in high...

Registers – Coded record sensors – Particular sensor structure

Reexamination Certificate

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C235S462140

Reexamination Certificate

active

07128264

ABSTRACT:
A high gain, low signal-to-noise, transimpedance amplifier is prevented from saturation even in the presence of bright sunlight by an offset adjustment circuit utilizing a field effect transistor as a variable resistor.

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patent: 6329881 (2001-12-01), Tachigori
patent: 6520415 (2003-02-01), McMaster
patent: 6607133 (2003-08-01), Wilz et al.
patent: 6708883 (2004-03-01), Krichever

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