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. 18, 2002
Filed:
Mar. 12, 1999
Akira Mitani, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In a recording/reproducing apparatus, a controller includes a counter responsive to incoming track feed requesting pulses to count the number of the pulses, a head movable state detection unit for detecting a movable state of a magnetic head, and a track feed controller responsive to the count value of the track feed requesting pulse counter to effect track feed of the magnetic head. Detection of the movable state depends on the recording medium being loaded and on completion of the formulation of track position information that is derived from an optical signal that varies as a function of track position. The track feed controller effects track feed of the magnetic head, responsive to the count value of the track feed requesting pulse counter, following detection of the movable state of the magnetic head.