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:
Apr. 23, 1991
Filed:
Apr. 05, 1989
Kenji Asai, Oome, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An access controller includes an access mechanism having at least one head, for moving said head relative to a recording medium in accordance with an input velocity difference signal, driving section responsive to an input seek command, for generating a primary velocity signal in accordance with a distance from a current position of the head to a destination cylinder designated by the seek command, amplifying the primary velocity signal in accordance with input gain data to obtain a target velocity signal, generating an actual velocity signal from position data readout from the recording medium by the head while said head is moved, and generating the velocity difference signal from the target velocity signal and the actual velocity signal to output the velocity difference signal to the access mechanism, and determination section responsive to an input adjustment command, for determining the gain data and outputting the gain data to said driving section.