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:
Apr. 27, 2010
Filed:
May. 06, 2003
Masaaki Matsuoka, Tokyo, JP;
Yoshihiro Honma, Saitama, JP;
Masaaki Matsuoka, Tokyo, JP;
Yoshihiro Honma, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A video signal processing apparatus includes two image display memory areasandwhich alternately repeat input and output operations by receiving a signal obtained by performing predetermined processing for an output image signal from an image sensor, an image display unitfor displaying an object image represented by image frames sequentially output from the two memory areas, a system controllerwhich, when an image frame is to be input to one of the two memory areas, causes the other one of the two memory areas to output a held image frame, and causes the two memory areas to alternately repeat the input and output operations, thereby switching inputting and outputting of the two memory areas, and a mode determination circuitfor determining whether the frame rate of the output image signal from the image sensoris higher or lower than the image display rate of the image display unit. On the basis of the determination result, the system controllerchanges input/output control for the two memory areas.