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:
Feb. 06, 2001
Filed:
Aug. 20, 1997
Kazuyuki Suda, Chiba, JP;
Kazuo Murayama, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A changeover circuit in a tape recorder includes a recording and reproducing integrated circuit (IC) having a signal terminal and a bias terminal and arranged such that a DC potential at the signal terminal is set equal to that at the bias terminal, a changeover transistor whose collector and emitter are connected between a signal line connected to the signal terminal and the bias terminal, a controller for controlling the changeover transistor by supplying an output therefrom through a resistor to a base of the changeover transistor, and a bypass circuit connected between the bias terminal and a ground. The bypass state of the bypass circuit is controlled based on a control voltage from the controller.