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. 12, 2000
Filed:
May. 22, 1998
Kazuko Nishimura, Kyoto, JP;
Hironori Akamatsu, Osaka, JP;
Akira Matsuzawa, Kyoto, JP;
Mitsuyasu Ohta, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A test-target circuit is constructed of circuit blocks each comprising low-Vth MOS transistors including address buffers and a timing generator. A test enable signal for indication of a test, an operation selection signal for indication of an operation, and a block selection signal used to select a desired circuit block are provided. A high-Vth NMOS and a high-Vth PMOS transistor are provided in order to provide to a test circuit one of detected currents of the circuit blocks that was selected by placing a block selection signal and the test enable signal in the state of HIGH.