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:
Apr. 22, 2003
Filed:
Feb. 04, 2002
Applicant:
Inventors:
Takashi Shikata, Kawasaki, JP;
Taizoh Satoh, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 ;
U.S. Cl.
CPC ...
G11C 8/00 ;
Abstract
In a semiconductor integrated circuit device, a first circuit has a clock generating circuit which generates a clock signal. A second circuit receives the clock signal from the clock generating circuit. The first circuit maintains the clock signal at a fixed frequency when an operating clock frequency of the first circuit is changed to another frequency. The first circuit supplies a control signal and the clock signal to the second circuit so that an operating clock frequency of the second circuit is determined based on a combination of the control signal and the clock signal.