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:
Sep. 08, 1998
Filed:
Dec. 06, 1996
Abraham Hoogendoorn, Eindhoven, NL;
Johannes J Kalfs, Eindhoven, NL;
U.S. Philip Corporation, New York, NY (US);
Abstract
An apparatus is disclosed for positioning a head relative to a plurality of tracks running parallel to each other in their longitudinal direction on a record carrier. The apparatus comprises a position detection unit for detecting the position of the head in a transverse direction, which has an output for supplying a first and a second position signal when the head is positioned onto each of two tracks. A memory is present for storing the first and second position signals. In a calibration mode of operation, a control signal generator generates a control signal to position the head onto one of the tracks and the memory stores the position signal generated by the position detection means. The control signal generator subsequently generates a second control signal so as to position the head onto the other track. The memory stores the second position signal generated by the position detection means. These position signals are recalled from memory when the apparatus switches from one track to the other, to effect an immediate positioning of the head to the desired track.