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. 04, 1989
Filed:
May. 29, 1987
Isao Asano, Furukawa, JP;
Shoichiro Saito, Furukawa, JP;
Tooru Kaneko, Miyagi, JP;
Toru Kowaguchi, Furukawa, JP;
Tetsuya Mitsuishi, Furukawa, JP;
Hiroshi Yoshida, Furukawa, JP;
Alps Electric Co., Ltd., , JP;
Abstract
An information recording disk driving device includes an information recording disk having servo tracks formed at predetermined regions which include servo information. The driving device is configured to move a head assembly from a recording track for signal writing or reading to an associated one of the servo tracks in response to a servo information supplied at a predetermined time. An instruction from a controller or an instruction from a host computer to read the servo information from the servo track subsequently place the head assembly at the fine track position of the original recording track according to the detected servo information.