Photography – With exposure objective focusing means – focusing aid – or... – Having accumulation photoarray and time control means
Reexamination Certificate
2005-11-08
2009-02-17
Perkey, William B. (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Having accumulation photoarray and time control means
C396S099000
Reexamination Certificate
active
07493034
ABSTRACT:
A focus detection system includes a line sensor array wherein the line sensor array photoelectrically converts object light into an electric charge, and outputs the accumulated electric charge as an image signal; a monitor sensor array for monitoring an integral value of the line sensor array to output a monitor signal; a controller; and an amplifier. The controller detects the integral value of the line sensor array from the monitor signal, continues to make the line sensor array perform an integral operation until a secondary maximum integral time elapses if, upon a lapse of a predetermined primary maximum integral time, a value of the monitor signal needs to be amplified at an amplification factor greater than a maximum amplification factor of the amplifier, and increases the amplification factor of the amplifier after a lapse of the secondary maximum integral time.
REFERENCES:
patent: 4618235 (1986-10-01), Ishida et al.
patent: 6115553 (2000-09-01), Iwamoto
patent: 6198506 (2001-03-01), Nakata et al.
patent: 6657669 (2003-12-01), Sato et al.
patent: 6871018 (2005-03-01), Nakata
patent: 6922526 (2005-07-01), Nakata et al.
patent: 6937818 (2005-08-01), Nakata et al.
patent: 2004/0159769 (2004-08-01), Nakata et al.
U.S. Appl. No. 11/224,026 to Nakata et al., filed Sep. 13, 2005.
U.S. Appl. No. 11/268,572 to Nakata, filed Nov. 8, 2005.
Greenblum & Bernstein P.L.C.
Hoya Corporation
Perkey William B.
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