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:
Jul. 17, 1990
Filed:
Feb. 26, 1988
Takahumi Shiba, Saitama, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A disk reproducing method, such as may be used with a compact disk or video disk, in which playing can be quickly restored following track flow caused, for example, by an external shock applied to the player. The disk is rotated with a spindle motor, the rotation of which is controlled with a first servo circuit. Data recorded on the disk is reproduced with a pickup. Tracking of the pickup is controlled with a second servo circuit. The pickup is driven with a slider motor radially of the disk. Rotation of the slider motor is controlled with a third servo circuit. When the first servo circuit is maintained unlocked for a predetermined period of time, the second and third servo circuits are turned off for a predetermined period of time, and then turned back on.