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:
Jan. 05, 1993
Filed:
Jun. 28, 1991
Toshikatsu Kawakami, Osaka, JP;
Toshimitsu Fujimori, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A video signal processing apparatus is provided which can be used when a transmitted video signal is displayed on a screen or a CRT having an aspect ratio (e.g. 9:16) different from an aspect ration (e.g. 4:3) of the transmitted video signal. When the video signal is time-base-compressed and displayed on the screen or CRT, a memory is used to store the digitally converted video signal. The video signal is written into the memory every two scan periods and is read out of the memory every two scan periods, thereby executing a double-speed scan conversion and also enabling time-base-compression to be performed. Accordingly, an optimum display state of video signals of various aspect ratios can be obtained by a small number of memory elements.