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:
Sep. 23, 1986
Filed:
Jan. 31, 1984
Ikuro Masuda, Hitachi, JP;
Hideo Maejima, Hitachi, JP;
Terumine Hayashi, Hitachi, JP;
Kazumi Hatayama, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method of diagnosing an integrated circuit device having a plurality of combinational circuits, at least one input memory circuit connected to an input side of the combinational circuits, and an output memory circuit connected to an output side of the combinational circuits is disclosed. An input diagnostic signal is selectively applied to at least one input memory circuit connected to a given one of the combinational circuits, to read out a diagnostic signal stored in an output memory circuit connected to the given combinational circuit. Further, an integrated circuit device is disclosed which is suited to be diagnosed in the above method.