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:
Dec. 12, 1995
Filed:
Apr. 29, 1994
Hitachi, Ltd., Tokyo, JP;
Hitachi Video & Information System, Inc., Kanagawa, JP;
Abstract
An electronic zoom system comprises a memory, a zoom operation processing circuit having a read/write control circuit for controlling the reading and writing of signals to and from said memory, respectively, and an operation control circuit for controlling said zoom operation processing circuit based upon a result of successive additions of .beta.-.alpha., whereby a video signal is input to said zoom operation processing circuit for electronically magnifying and expanding said video signal by a magnification factor of .beta./.alpha.. The electronic zoom system can reduce the power consumption of the control circuit and enhance the utilization efficiency of control data used for the control circuit.