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. 16, 1976
Filed:
Apr. 09, 1975
Nobuaki Takahashi, Yamato, JA;
Masaru Moriyama, Yamato, JA;
Victor Company of Japan, Limited, Yokohama, JA;
Abstract
A matrix amplifying circuit comprises a first operational amplifier having an inverting and a non-inverting input terminal. The sum of the first and second channel signals is applied to the inverting terminal. The difference of the two channel signals is applied to the non-inverting terminal. The matrix amplifier substracts these sum and difference signals and a second operational amplifier adds them. This second amplifier has an inverting input terminal to which the sum signal and the difference signal are respectively supplied. These first and second operational amplifiers respectively produce first and second channel signals, as outputs thereof.