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:
Aug. 20, 1996
Filed:
Oct. 18, 1994
Sony Corporation, , JP;
Abstract
Provision is made of a traverse cycle measuring circuit for measuring the traverse cycle based on a signal CNIN obtained by digitalizing the tracking error signal at the time of a track traverse, a register in which any target value of the traverse cycle can be set, a circuit for comparing the measured traverse cycle and set target value, control circuits, for controlling the tracking and sled so that the detected speed of traverse converges to a target value, and counting circuits for counting the number of traversed tracks based on the signal CNIN, the target value of the register being reset to a value by which the speed of traverse is reduced when the count of the counting circuit reaches a number of tracks (N-.alpha.) smaller than the target number of tracks by exactly .alpha..