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. 12, 1990
Filed:
Apr. 06, 1988
Applicant:
Inventors:
Patricia A Simonson, San Jose, CA (US);
Timothy S Koepp, San Jose, CA (US);
Assignee:
Amdahl Corporation, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 51 ;
Abstract
Described is a digital phase lock device comprising a feedback loop having a plurality of delay elements and a selector. The delay elements delay a sampling signal into signals having different time delay values relative to the sampling signal. These delay signals are compared with a periodic target signal whereby one of them is selected as the next sampling signal. As a result, the sampling signal tracks the periodic signal.