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. 05, 1995
Filed:
Jul. 01, 1994
Haruo Kogane, Kawasaki, JP;
Hidetoshi Mimura, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A television camera equipped with a continuously-variable-speed electronic shutter function which can control the charge-storing time of a solid-state image sensor and an amplifier so that a video signal follows the optimum light amount for a subject at high speed and with high accuracy. A shutter-equipped image sensor which is controlled by a shutter pulse generating unit, converts light incident on an optical lens into an electric signal. The electric signal, after being passed through an amplifier and a signal processing unit, is detected by a video level detecting unit as a video level. A shutter control unit holds the shutter amount corresponding to the video level for each field to immediately calculate an estimated shutter amount by using a predetermined equation, and supplies the calculated shutter amount to the shutter pulse generating unit for each field. A control mode decision unit exclusively controls a gain control unit serving as an AGC and the shutter control unit.