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.

Date of Patent:
Nov. 11, 1997

Filed:

May. 31, 1995
Applicant:
Inventor:

Soichi Kawasaki, Tokyo, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
371 28 ; 371 223 ;
Abstract

Output signals of input buffers connected to the external input terminals of the semiconductor circuit are stored in respective memories. The memories are connected in series. Data of the memories are serially output from an external output terminal of the semiconductor circuit. In the above-mentioned operations, a pulse for storing the output signals of the input buffers into the memories, for selecting one of an output signal of the internal circuit and the data stored in the memories, and outputting the selected one from the external output terminal, is supplied via another external input terminal for a test. A pulse for connecting the memories in series is also supplied via a further external input terminal. The output signals of the input buffers can be output from the semiconductor circuit, without any operation of the internal circuit.


Find Patent Forward Citations

Kawasaki, Soichi. (1997). Method and circuit for checking operation of input buffers of a (U.S. Patent No. 5687180). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5687180

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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