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. 19, 1989
Filed:
Nov. 30, 1987
Applicant:
Inventors:
Tsuyoshi Egami, Higashiosaka, JP;
Mitsufumi Yoshimoto, Nishinomiya, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 32 ; 360 51 ;
Abstract
A circuit for use in reproducing a PCM signal recorded on a recording medium in a normal mode and a special mode, to control the frequency of a reproduction clock in accordance with variations in the frequency of the PCM signal. The speed of the medium and the speed of the head, or the frequency of a single-frequency signal in a track format recorded on the signal recording track of the medium is detected to produce a band control signal in accordance with the PCM signal frequency to shift the operating band of a voltage-controlled oscillator in the circuit.