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:
Jun. 05, 2001
Filed:
Mar. 16, 1999
Shogo Miyanabe, Tsurugashima, JP;
Hiroki Kuribayashi, Tsurugashima, JP;
Pioneer Electronic Corporaion, Tokyo, JP;
Abstract
A tilt detector for detecting a tilt which is present between a recording disk and a pickup. The tilt detector detects an error value between a read signal read from a central recording track within three recording tracks adjacent to each other and a predetermined value. A first coefficient is calculated from a correlation of a read signal read from the recording track adjacent to the central recording track on the inner peripheral side of the disk with the error value, and a second coefficient is calculated from a correlation of a read signal read from the recording track adjacent to the central recording track on the outer peripheral side of the disk with the error value. A tilt present between the recording disk and the pickup is detected on the basis of a relationship in magnitude between the first and second coefficients.