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:
Jun. 28, 2011
Filed:
Feb. 19, 2009
Nobuyasu Kanekawa, Hitachi, JP;
Ryoichi Kobayashi, Tokai, JP;
Tomonobu Koseki, Hitachinaka, JP;
Katsuya Oyama, Hitachinaka, JP;
Nobuyasu Kanekawa, Hitachi, JP;
Ryoichi Kobayashi, Tokai, JP;
Tomonobu Koseki, Hitachinaka, JP;
Katsuya Oyama, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A comparator circuit for comparing outputs of an on-chip redundant system is mounted on a second semiconductor chip that is separate from the on-chip redundant system. The second semiconductor chip which preferably contains a power source circuit for supplying power to the on-chip redundant system, a driver circuit for driving an output circuit, and the like are mounted. With this configuration, the influence of a failure occurring in the on-chip redundancy system can be prevented from being exerted on the comparator measure.