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. 05, 1989
Filed:
Feb. 26, 1988
Applicant:
Inventor:
Hitoshi Kanamaru, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; G11B / ;
U.S. Cl.
CPC ...
358342 ; 360 7303 ; 360 191 ; 360 101 ; 358311 ; 358321 ; 358323 ; 358337 ; 358338 ; 358341 ;
Abstract
A disk player in which the audio signal can be reproduced during FAST and SLOW playing modes. The speed of the spindle motor is controlled in accordance with the phase and frequency difference between a reference synchronizing signal and a synchronizing signal derived from information read from the disk. The frequency of the reference synchronizing signal is made variable to vary the speed of the spindle and hence the speed of reproduction of the disk.