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. 09, 2010
Filed:
Feb. 28, 2006
Applicant:
Toshiyuki Shibuya, Kawasaki, JP;
Inventor:
Toshiyuki Shibuya, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G06F 17/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A first FF outputs a first signal. A second FF captures the first signal and outputs a second signal. Each of the first and the second FF has a clock terminal to capture a clock signal. A third FF captures the first signal in parallel with the second FF. The third FF has a clock terminal to capture the clock signal in parallel with the clock terminal of the second FF. A buffer delays arrival of the clock signal to the clock terminal of the third FF. A comparing circuit compares the second signal and the third signal. An error collecting circuit captures a result of comparison to judge whether a timing error occurs in the second FF.