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:
May. 06, 2014
Filed:
Sep. 13, 2012
Naoya Ohnishi, Tokyo, JP;
Hiroshi Nakatani, Tokyo, JP;
Yoshito Sameda, Kanagawa-ken, JP;
Jun Takehara, Tokyo, JP;
Makoto Toko, Saitama-ken, JP;
Naoya Ohnishi, Tokyo, JP;
Hiroshi Nakatani, Tokyo, JP;
Yoshito Sameda, Kanagawa-ken, JP;
Jun Takehara, Tokyo, JP;
Makoto Toko, Saitama-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A clock diagnosis circuit includes: a delay circuit to delay the clock by a prescribed time which is not more than the clock pulse width; an integral multiplication delay circuit to delay a delayed clock outputted from the delay circuit by a prescribed number of cycles; a first exclusive OR circuit to encode the clock using the delayed clock; a second exclusive OR circuit to decode an output of the first exclusive OR circuit using an output of the integral multiplication delay circuit; and a comparison circuit to compare the clock with an output of the second exclusive OR circuit to thereby detect a malfunction of the clock.