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:
Apr. 30, 1996
Filed:
Jun. 22, 1994
Applicant:
Inventor:
Frank W Cabaniss, Columbia, SC (US);
Assignee:
AT&T Global Information Solutions Company, Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F / ; H01L / ; G06F / ;
U.S. Cl.
CPC ...
368118 ; 324617 ; 395550 ;
Abstract
A circuit and method for determining the operating performance of an integrated circuit which may be used to screen integrated circuits prior to sale or delivery, or to optimize the frequency of the integrated circuit during use. The circuit employs a comparison circuit to compare a first time of arrival of a clock pulse, which is propagating through the integrated circuit with a second time of arrival of the clock signal at a second input. The comparison circuit produces an output signal which may be used to reject or accept the integrated circuit, or to automatically adjust the frequency to minimize the delay.