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:
Nov. 03, 1992
Filed:
Jul. 11, 1990
Applicant:
Inventor:
Takashi Okano, Tokorozawa, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 50 ; 369 54 ; 369 58 ; 369124 ;
Abstract
An apparatus for playing CLV disks is provided with a speed signal generator for generating a speed signal having a frequency corresponding to the rotational speed of the disk, and the rotation of the disk is controlled so that the frequency of the speed signal equals to a predetermined frequency independently of the radial position of an information reading point of a pickup, thereby the period of a search operation of the apparatus is shortened.