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:
Mar. 04, 2008
Filed:
Oct. 20, 2005
Fumio Yuuki, Kamifukuoka, JP;
Katsuya Tanaka, Kokubunji, JP;
Takeshi Kato, Akishima, JP;
Teruhisa Shimizu, Ome, JP;
Fumio Yuuki, Kamifukuoka, JP;
Katsuya Tanaka, Kokubunji, JP;
Takeshi Kato, Akishima, JP;
Teruhisa Shimizu, Ome, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A processor or a semiconductor integrated circuit has circuit blocks performing signal processing, internal power supply nets, noise detecting circuits corresponding to each circuit block that detect noise on the power supply nets and an interruption handling circuit that prevents a malfunction in processing within a circuit block caused by noise on the power supply nets. When noise is detected, the interruption handling circuit performs an interruption by sending an interruption signal to the circuit block relating to the signal processing for preventing a malfunction to the circuit block. During the operation of a plurality of stages for executing an instruction, noise is monitored at every stage. If no noise is detected through a final stage, the result is outputted. If noise is detected at any one of the stages, then an interruption process is performed.