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. 10, 1996
Filed:
Jan. 23, 1995
Wataru Shimosaka, Sakai, JP;
Funai Techno-Systems Co., Ltd., Osaka, JP;
Abstract
In a track searching method for an optical disk drive such as CD-ROM and the like, when a search object time is given from a host computer, the number of tracks is which a difference between a present time, included in a discriminating information of track on which an optical pick-up is located, and the given searching object time is determined. In accordance with the detected number of tracks, an optical pick-up jumps. After, the number of tracks corresponding to a difference between a time included in a discriminating information of track and the above-mentioned searching object time is detected. Then, the ratio of the number of tracks to be jumped to the detected number of tracks of the difference is calculated. The ratio is accumulated in each track searching operation and its mean value is calculated. The mean value is used as revising coefficient on and after the second track searching.