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. 04, 1989
Filed:
Nov. 30, 1987
Applicant:
Inventors:
Martin W Sanner, San Jose, CA (US);
Seema Chandra, San Jose, CA (US);
Assignee:
Tandem Computers Incorporated, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 25 ; 364200 ;
Abstract
Checking method and apparatus for monitoring the proper operation of a state machine of the type operable to produce control signals that in turn, cause other digital apparatus to produce responsive signals. Part of the checker apparatus, in effect, emulates the digital apparatus, receiving the control signals to produce therefrom emulated response signals that, when compared to the control signals, provide an indication of correct operation of the state machine means and associated circuitry.