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:
May. 13, 1986
Filed:
Sep. 08, 1983
Yasuo Torimaru, Nara, JP;
Masahiro Yoshimura, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An electronic viewfinder comprises a plurality of picture elements which form a matrix image display device. A drive circuit is connected to the display device to cause the electronic viewfinder to selectively display a portion of the image, corresponding to the video signal being received by the drive circuit, at an increased magnification. The drive circuit includes frequency divider circuits for providing shift clock pulse signals at frequencies corresponding to the available rates of magnification of the image portion. The drive circuit further includes delay circuits for delaying synchronizing signals to select the portion of the image which is to be displayed. The electronic viewfinder having this drive circuit, is capable of providing increased resolution for a portion of an image by enlarging the image, while allowing the electronic viewfinder to be formed by a relatively small number of picture elements, so that the electronic viewfinder may be miniaturized and manufactured at a reduced cost.