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:
Nov. 25, 1980
Filed:
Nov. 03, 1978
Applicant:
Inventor:
James K Skilling, Harvard, MA (US);
Assignee:
GenRad, Inc., Concord, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G06F / ;
U.S. Cl.
CPC ...
371 27 ; 324 / ; 371 25 ;
Abstract
A method and apparatus are disclosed for identifying and locating faults in the portion of circuit assemblies containing digital signals by conducting in-circuit tests embodying the application of uninterrupted sequences of signals to nodes of the circuits and the comparison of nodal signals to expected values, reducing the complex testing of the circuit assemblies to a series of simple tests of components or groups of components constituting the assemblies; and, in connection with bus-structured circuits, eliminating the possibility of bus contention problems in good circuit assemblies under test.