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:
Nov. 04, 2003
Filed:
Oct. 11, 2001
Applicant:
Inventor:
Norio Hatanaka, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/04 ;
U.S. Cl.
CPC ...
G06F 1/04 ;
Abstract
A digital circuit, which avoids problems in LSIs including erroneous operation even when noise is superposed on a clock signal, is provided. A frequency divider divides the frequency of a first clock signal to generate a raw clock signal. A first flip-flop synchronizes the raw clock signal with a second clock signal. A second flip-flop synchronizes an output signal of the first flip-flop with the first clock signal and outputs the synchronized signal as a reproduced clock signal.