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:
Aug. 02, 1983
Filed:
Nov. 12, 1980
Applicant:
Inventor:
Lars O Eriksson, Norrkoping, SE;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 32 ; 369 33 ; 369 44 ; 360 721 ; 360 78 ;
Abstract
A device for locating a desired information track on an information carrier, after an information transducer has been passed over the information tracks on the carrier in the transverse direction in response to a starting pulse, which utilizes a control signal that is derived from the alternating voltage thus obtained, to keep the relative velocity of the transducer relative to the information tracks constant.