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. 17, 1985
Filed:
Dec. 07, 1982
Applicant:
Inventors:
Haruo Shimoyama, Tokyo, JP;
Toshio Ohshima, Tokyo, JP;
Shinobu Nomoto, Tokyo, JP;
Makoto Hiraoka, Tokyo, JP;
Toshio Hanabata, Yokohama, JP;
Assignees:
Nippon Electric Co., Ltd., Tokyo, JP;
Nippon Telegraph & Telephone Public Corporation, Tokyo, JP;
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358141 ; 358142 ; 358143 ; 358146 ;
Abstract
The horizontal sync signal contained in the video signal from a video apparatus sometimes undergoes phase jump, resulting in failure of multiplexing of audio and video signals based on the horizontal sync signal. A sync signal switching circuit is adapted to produce a modified sync signal by switching the sync signal to a local sync signal upon occurrence of the phase jump, thereby assuring the multiplexing of audio and video signals.