Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-05-29
2007-05-29
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S2140AG, C250S2140LS
Reexamination Certificate
active
11107443
ABSTRACT:
An amplification circuit for implementation in sensors such as photodetectors and other devices, and related method of amplification, are disclosed. In some embodiments, the amplification circuit includes a first amplifier that receives an input signal at least indirectly from a photosensitive device and provides an amplified signal based upon the input signal, where each the amplified signal at least includes a time-varying signal component, and a recovery circuit that receives the amplified signal and provides an output signal indicative of at least a portion of the time-varying signal component of the amplified signal. The recovery circuit includes a current splitting component that operates to generate negative and positive signals indicative respectively of negative and positive portions of the time-varying signal component, and the negative and positive signals are generated in a manner such that there are no substantial discontinuities between those signals at crossover points between those signals.
REFERENCES:
patent: 3906389 (1975-09-01), Matsumoto et al.
patent: 4409500 (1983-10-01), Welland
patent: 5241388 (1993-08-01), Schofield et al.
patent: 5387979 (1995-02-01), Brauer et al.
patent: 5854683 (1998-12-01), Keane
patent: 6894568 (2005-05-01), Seetharaman et al.
patent: 2002/0043971 (2002-04-01), Noda
patent: 2002/0113651 (2002-08-01), Burt
patent: 2003/0058035 (2003-03-01), Taubman
patent: 2003/0201381 (2003-10-01), Baumgartner
patent: 2005/0077925 (2005-04-01), Bernardson
Electronics Letters, vol. 25, No. 3, Feb. 2, 1989, pp. 228-230.
Bui-Pho Pascal M.
Epps Georgia
Pienkos John T.
Rockwell Automation Technologies Inc.
Walbrun William R.
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