Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2008-09-02
2008-09-02
Epps, Georgia Y. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C330S085000, C250S2140AG
Reexamination Certificate
active
11517076
ABSTRACT:
A system and method for acquisition and conditioning of a signal received from a light sensor generating an input signal in proportion to a sensed amount of light, the system utilizing an operational amplifier with first and second feedback loops to render the output signal of a control circuit, part of the second feedback loop, in proportional relationship to the input signal across the range of output signals from the light sensor.
REFERENCES:
patent: 5014238 (1991-05-01), McLeish et al.
patent: 5276630 (1994-01-01), Baldwin et al.
patent: 5306995 (1994-04-01), Payne et al.
patent: 5339022 (1994-08-01), Fleming et al.
patent: 5412291 (1995-05-01), Payne et al.
patent: 5493650 (1996-02-01), Reinke et al.
patent: 5742200 (1998-04-01), He
patent: 5950709 (1999-09-01), Krueger et al.
patent: 6181140 (2001-01-01), Vokey et al.
patent: 6404281 (2002-06-01), Kobayashi
patent: 6459271 (2002-10-01), Vokey et al.
patent: 6646454 (2003-11-01), Watkins
patent: 6739145 (2004-05-01), Bhatnagar
patent: 6868357 (2005-03-01), Furse
patent: 2001/0015918 (2001-08-01), Bhatnagar
patent: 2001/0039190 (2001-11-01), Nakamura et al.
patent: WO 91/02300 (1991-02-01), None
patent: WO 02/37298 (2002-05-01), None
patent: WO 2005/029207 (2005-03-01), None
patent: WO 2005/029207 (2005-03-01), None
patent: WO 2006/008732 (2006-01-01), None
Vitaly Burkatovsky, “An Adaptive Input-Cell Circuitry Useful in Configurable Electronic Controllers”, pending patent application filed Jun. 21, 2006.
Texas Instruments Inc., “250MHz, Rail-to-Rail I/O, CMOS Operational Amplifier with Shutdown”, OPA2357, SBOS235D-Mar. 2002-revised Feb. 2005.
Texas Instruments Inc., “Precision Logarithmic and Log Ratio Amplifier”, LOG 104, SBOS243C-May 2002-revised Apr. 2005.
National Semiconductor Corp., “An Applications Guide for Op Amps”, Application Note 20, Feb. 1969, www.national.com.
Joseph J. DiStefano, III, Ph.D. et al., “Schaum's Outline of Theory and Problems of Feedback and Control Systems”, 1990 second edition, Schaum's Outline Series, McGraw-Hill, Inc.
Eastman Kodak Company
Epps Georgia Y.
Ko Tony
Schindler, II Roland R.
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