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. 20, 1983
Filed:
Nov. 25, 1981
Barrett E Guisinger, Saratoga, CA (US);
Sony Corporation, Tokyo, JP;
Abstract
A control circuit for selectively combining two or more input signals is comprised of two amplifier circuits, each having two input stages and a dual output stage with one output stage of each amplifier circuit being gain controllable in response to a control signal. The gain controllable output stages are connected to a single combined output terminal and the other output stages are connected to a circuit ground. One input signal is supplied to one input stage of each amplifier circuit whereas the other input signal is supplied in non-inverted form to the other input stage of one of the amplifier circuits and is supplied in inverted form to the other input stage of the other amplifier circuit.