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:
Dec. 24, 1996
Filed:
Oct. 06, 1995
Applicant:
Inventor:
Kyota Funamoto, Tokorozawa, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369124 ; 369 4434 ; 369 32 ;
Abstract
An on-track detecting apparatus which can accurately detect an on-track state of a disk even in a high speed search in an optical disk apparatus for recording or reproducing data to/from an optical disk having byte patterns of a sample servo. In an on-track detecting circuit in a tracking servo apparatus, a comparator for comparing a mean value of wobble pit signals and a clock pit signal is provided and an on-track signal is generated on the basis of a comparison result of the comparator.