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:
Jun. 20, 2000
Filed:
Sep. 22, 1997
Kazunori Moriya, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A head positioning control system for use with a disk drive having a head unit with separate read and write heads is disclosed. A CPU executes the seek control for moving a head to a target track on the basis of the servo data prerecorded on the disk. After the seek control, the CPU executes the track following control operation for positioning the read head within a range of a target track at the time of read operation and positioning the write head within a range of the target track at the time of write operation on the basis of the positional information based on the servo data and the table information prepared in an EEPROM. The table information includes the positioning control reference information for determining the final set point of the read gap or the write gap in accordance with the read operation or the write operation, respectively, for each track.