Television – Camera – system and detail – Still and motion modes of operation
Reexamination Certificate
2005-08-29
2010-11-02
Chan, Jason (Department: 2622)
Television
Camera, system and detail
Still and motion modes of operation
Reexamination Certificate
active
07825955
ABSTRACT:
Immediately before regular image pickup, a reference image is taken through exposure control by center-weighted photometry. A histogram indicative of a luminance distribution of all pixels is generated on the basis of luminance information of the reference image. Then, a luminance point in the histogram where the accumulated number of pixels from the high-luminance side is equal to a half of the total number of pixels is obtained, and a difference is calculated between the luminance point and a luminance point (“118”) when the brightness is uniform in the reference image. At the time of regular image pickup, proper exposure determined in response to the brightness of the subject when the reference image is taken is compensated with the previously calculated difference, and exposure control for the compensated proper exposure is performed.
REFERENCES:
patent: 5184172 (1993-02-01), Miyazaki
patent: 5677733 (1997-10-01), Yoshimura et al.
patent: 5831676 (1998-11-01), Takahashi et al.
patent: 6583820 (2003-06-01), Hung
patent: 6879345 (2005-04-01), Kawanishi
patent: 7002632 (2006-02-01), Takahashi
patent: 7024108 (2006-04-01), Takahashi
patent: 2002/0163587 (2002-11-01), Takahashi
patent: 2003/0184673 (2003-10-01), Skow
patent: 0 488 442 (1992-06-01), None
patent: 2002-84455 (2002-03-01), None
patent: 2002-277918 (2002-09-01), None
patent: 2002-369074 (2002-12-01), None
patent: 2003-8986 (2003-01-01), None
patent: 2003008986 (2003-01-01), None
English Translation of Japanese Patent Application No. 2003-008986, Published Jan. 10, 2003.
Murakami, M., et al, “An Exposure Control System of Video Cameras Based on Fuzzy Logic Using Color Information” Proceedings of the Fifth IEEE International Conference on Fuzzy System. vol. 3. Sep. 8. 1996, pp. 2161-2187, XP 002356822, ISBN: 0-7803-3645.
Korean Office (and English language translation) dated Feb. 29, 2008, issued in a counterpart Korean Application.
Casio Computer Co. Ltd.
Chan Jason
Holtz Holtz Goodman & Chick PC
Vieaux Gary C
LandOfFree
Image pickup apparatus, exposure control method, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image pickup apparatus, exposure control method, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image pickup apparatus, exposure control method, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4167833