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:
May. 13, 1980
Filed:
Aug. 14, 1978
Harumi Horiuchi, Yokohama, JP;
Soundesign Corporation, Jersey City, NJ (US);
Abstract
A play/record switching circuit for an electrical signal reproducing and recording apparatus having inputs for source data signals and a microphone data signal, and a tape head for generating a tape head reproducing signal and for receiving one of the data signals to be recorded. The circuit includes one mechanical switch for selecting one of said signals, another mechanical switch for selecting either a play or a record mode, and electrical amplifiers for processing the various signals and for monitoring the processed signals. Positive- and negative- logic-controlled electronic bilateral switches are controlled by a D.C. voltage control signal for selecting the appropriate processing amplifier and the appropriate monitor amplifier in dependence upon which mode has been selected and which signal has been selected by both mechanical switches. The electronic amplifiers and the bilateral switches and the D.C. control signal circuitry are all incorporated on a single integrated circuit chip.