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:
Mar. 21, 1995
Filed:
Feb. 25, 1993
Applicant:
Inventor:
Shuji Shimizu, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
348363 ; 348255 ;
Abstract
A video camera device includes an image signal level varying circuit for varying the signal level of an image signal; image signal level detecting circuit for detecting the signal level of the image signal; zoom lens position detecting circuit for detecting the position of a zoom lens; and brightness correcting circuit supplied with an output from the zoom lens position detecting means for correcting a brightness attenuating characteristic of the zoom lens responsive to the position of the zoom lens. The gain of the image signal level varying circuit is varied by an output of the image signal level detecting circuit and an output of the brightness correcting circuit.