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:
Jul. 25, 1989
Filed:
Jan. 29, 1988
Applicant:
Inventors:
Arnold C Scheer, Boulder, CO (US);
Joe K Jurneke, Fed. Hgts, CO (US);
Assignee:
Storage Technology Corporation, Louisville, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 51 ; 360 46 ;
Abstract
The optimum processing of magnetically or optically recorded data to recover recorded data bits and clocking information should include apparatus to compensate for variations in media velocity during writing and reading of the media. The adaptive velocity compensation circuit accomplishes this result by sampling the media velocity and comparing the sample to a reference velocity usng a digital tachometer. The result of this comparison is used to control a variable pulsewidth single shot which adjusts the operation of a phase locked loop phase detector to match the velocity of the moving media.