Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-10-26
2009-02-03
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S201200, C250S2140RC, C396S128000
Reexamination Certificate
active
07485837
ABSTRACT:
In an autofocus image sensor, monitoring pixels are disposed adjacent to a pixel array over a length equal to that of the pixel array in each of a standard portion and a reference portion. Signals from the monitoring pixels of both of the standard portion and the reference portion are subjected to arithmetic operation to control accumulation of electric charges. Thus, an error in position detection is minimized.
REFERENCES:
patent: 4523829 (1985-06-01), Eguchi et al.
patent: 5027148 (1991-06-01), Anagnostopoulos
patent: 62-199060 (1987-09-01), None
patent: 9-14956 (1997-01-01), None
patent: 2001-33687 (2001-02-01), None
patent: 2005-300844 (2005-10-01), None
Kikuchi Tetsuo
Tamiya Kosei
Tsunai Shiro
NEC Electronics Corporation
Olympus Corporation
Olympus Imaging Corp.
Pyo Kevin
Sughrue & Mion, PLLC
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