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:
Oct. 15, 1996
Filed:
Dec. 27, 1994
Tamane Takahara, Tokyo, JP;
Akihiro Kasahara, Chiba-ken, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
When a optical head is moved towards a appointed track, a reference velocity is read out from reference velocity calculation data in accordance with the number of remaining tracks latched in a track counter circuit. Using the reference velocity calculation data, a compensated reference velocity is calculated from the read out reference velocity. A linear motor control circuit is controlled on the basis of the compensated reference velocity. Thereby, the velocity of the optical head is controlled. In addition, when the optical head is moved towards the appointed track, it is determined whether the optical head is in an acceleration operation mode or in a deceleration operation mode. If the optical head is in the acceleration operation mode, the velocity is controlled by using the reference velocity. If the optical head is in the deceleration operation mode, the velocity is controlled by using the compensated reference velocity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile