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:
Oct. 12, 1976
Filed:
Oct. 24, 1974
Tsuneo Ohkubo, Katano, JA;
Yoshio Horiike, Neyagawa, JA;
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Abstract
A 4-channel stereophonic demodulating system based on a switching mode, which comprises a plurality of switching means for demodulating a received 4-channel stereophonic composite signal under control by a first and a second switching signals obtained from a pilot signal, means to separately derive four stereophonically related signals at the respective output terminals of said switching means, and adding means to add plural output signals from at least one switching means to each other. The signal levels of the individual channel signal components are adjustable by said adding means relative to one another to enable separation adjustment, so that in each of the four stereophonically related signals which appear at respective output terminals of the system, cross-talk due to the other signals is reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile