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:
Nov. 17, 1992
Filed:
Aug. 28, 1989
Applicant:
Inventors:
Akihisa Kawamura, Osaka, JP;
Masaharu Matsumoto, Osaka, JP;
Mitsuhiko Serikawa, Osaka, JP;
Ryo Tagami, Osaka, JP;
Katsuaki Sato, Osaka, JP;
Hiroko Yoshida, Osaka, JP;
Hikari Hashimoto, Kobe, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358341 ; 358343 ; 381-1 ; 381 17 ; 381 18 ;
Abstract
Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with recording of video and audio signals, and can thereby be subsequently played back for producing sound fields which are respectively synchronized with video images.