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. 12, 1991
Filed:
Apr. 06, 1989
Applicant:
Inventors:
Kiyoshi Tateishi, Tokorozawa, JP;
Haruyasu Sakata, Tokorozawa, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 4428 ; 369 30 ; 358907 ;
Abstract
In a tracking servo system for use in a disc player having a pickup, for playing an information recording disc having a recording track, the peak value of the tracking error signal obtained during a track jump operation is detected, and at least one of the pulse width and the pulse height of the deceleration pulse for the jump operation is varied in response to the detected peak value. With this feature, an appropriate control amount for the track jump operation corresponding to the track pitch is obtained even if there is a change in the track pitch.