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:
Mar. 28, 1989
Filed:
Nov. 04, 1987
Alvert M Rijckaert, Eindhoven, NL;
Joannes A Van Der Kop, Eindhoven, NL;
U.S. Philips Corp., New York, NY (US);
Abstract
Rotatable head support (6) carries at least one magnetic head (7) which scans the tracks of a magnetic tape (1) guided across an arcuate guide surface (5) over an angle smaller than 180.degree.. The angle of inclination (.alpha.) of a head relative to a reference plane (100) is adjustable by a rack (13) and a pinion (15) to enable the tracks (26) to be followed at tape speeds (n.multidot.V.sub.0) which vary relative to a nominal tape speed (V.sub.0). Tape speed detection means (22) derive a control signal used to adjust the angle of inclination (.alpha.) in conformity with a formula containing the playback factor (n) and other parameters in order to enable a comparatively high tape speed (n.multidot.V.sub.0) to be used, starting from a specific maximum acceptable tracking error.