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. 07, 2000
Filed:
Jun. 27, 1994
Applicant:
Inventors:
Walter E Gibson, San Jose, CA (US);
Jeffery A Sprouse, Mountain View, CA (US);
Eduardo M Lipiansky, Danville, CA (US);
Javad Khakbaz, San Jose, CA (US);
Michael A Plum, San Jose, CA (US);
Philip R Manela, San Mateo, CA (US);
Ko Yamamoto, Campbell, CA (US);
Assignee:
Tandem Computers Incorporated, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
702120 ; 714727 ;
Abstract
Logic circuitry in the form of an integrated circuit includes a number of scannable registers located at various locations of the logic circuitry to continuously sample signal states thereat. In response to signalling from a maintenance diagnostic processor the scannable registers can be commanded to freeze their content for extraction and observation to determining the operating condition of the logic circuitry.