Photography – With exposure objective focusing means – focusing aid – or... – Processing circuit
Reexamination Certificate
2006-04-04
2006-04-04
Perkey, W. B. (Department: 2851)
Photography
With exposure objective focusing means, focusing aid, or...
Processing circuit
C348S349000
Reexamination Certificate
active
07024107
ABSTRACT:
An automatic focus adjustment device has an image sensing element for converting an object optical image into an electrical signal, and outputting an image signal, a filter for extracting high-frequency components of the image signal obtained by the image sensing element, an integrator for integrating the high-frequency components extracted by the filter and outputting an integrated value, a peak hold circuit for detecting and outputting a peak value of the high-frequency components extracted by the filter, a discrimination unit for discriminating the luminance distribution of the object optical image, and a focus adjustment unit for making focus adjustment using one of the integrated value output from the integrator and the peak value output from the peak hold circuit in accordance with the discrimination result.
REFERENCES:
patent: 4967280 (1990-10-01), Takuma et al.
patent: 5126849 (1992-06-01), Senuma et al.
patent: 5235428 (1993-08-01), Hirota et al.
patent: 5257058 (1993-10-01), Mabuchi
patent: 5442397 (1995-08-01), Yoshimura et al.
patent: 5534923 (1996-07-01), Suda
patent: 5604538 (1997-02-01), Kaneda et al.
patent: 5614951 (1997-03-01), Lee et al.
patent: 5923371 (1999-07-01), Iijima
patent: 6512549 (2003-01-01), Iijima et al.
patent: 6552748 (2003-04-01), Sugimoto
patent: 2005/0083428 (2005-04-01), Ohkawara
patent: A 62-186214 (1987-08-01), None
patent: A 3-222583 (1991-10-01), None
patent: A 5-014796 (1993-01-01), None
patent: A 10-239581 (1998-09-01), None
Morgan & Finnegan L.L.P.
Perkey W. B.
LandOfFree
Focusing device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Focusing device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focusing device and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3601142