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. 14, 1989
Filed:
Jun. 24, 1987
Applicant:
Inventors:
Michael J Redig, Loveland, CO (US);
David M Prater, Loveland, CO (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ; H03D / ; H03L / ; H03L / ;
U.S. Cl.
CPC ...
364580 ; 375120 ; 331 / ; 331 25 ;
Abstract
A device for synchronizing the output test pattern signals of a test circuit with the clock signal of a device under test (DUT). The invention uses a programmable delay in the feedback loop of a phase locked loop system to adjust the phase of the test pattern signals to be synchronized with the clock of the device under test (DUT).