The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1992
Filed:
Feb. 28, 1991
Applicant:
Inventors:
Satoko Senuma, Tokyo, JP;
Masaaki Tsuruta, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358227 ; 358226 ; 358209 ; 2502017 ; 354402 ;
Abstract
A video camera system has a movable focusing lens which is automatically focused to form a sharp subject image on a CCD. The CCD generates a video signal based on light from a subject transmitted through the movable focusing lens. Contrast data are produced from smaller and larger image frames in a field on the CCD based on the generated video signal. The movable focusing lens is controlled on the basis of the contrast data in order to maximize the contrast data simultaneously within the smaller and larger image frames.