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. 04, 2006
Filed:
May. 06, 2003
Hiromichi Yamamoto, Iwaki, JP;
Hiromichi Yamamoto, Iwaki, JP;
Alpine Electronics, Inc., Tokyo, JP;
Abstract
An optical disc reproduction apparatus is provided for permitting appropriate automatic adjustment to a servo control system, particularly a CD and a DVD-ROM having a BCA. A limit switchis disposed in such a manner that it detects movement of an optical pickupto a position which is located at a radius of 23.49 mm from the center. A system controllermoves the optical pickupby 1.0 mm in an outer radial direction from the position detected by the limit switch, and reads a signal from an optical discat that position to carry out the automatic adjustment to the servo system, through a servo controllerand a feed motor. As a result, in the CD, a signal within a lead-in area thereof is used for and subjected to the automatic adjustment performed by the servo controller, while in the DVD-ROM, a signal in an outer peripheral area of a lead-in area having the BCA and in the vicinity thereof is used for and subjected to the adjustment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile