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. 27, 1990
Filed:
Feb. 24, 1989
Shouji Saitoh, Takahagi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A clock signal generation apparatus is disclosed in which an original signal source generates an original clock signal, a first frequency divider starts dividing the frequency of the original clock signal in response to the rise of the original clock signal and produces a frequency-divided clock signal, a second frequency divider starts dividing the frequency of the original clock signal in response to the fall of the original clock signal and produces a frequency-divided clock signal, a sync timing signal source generates a sync timing signal, and a selection circuit renders effective selected one of the first and second frequency dividers in accordance with a level of the original clock signal at selected one of the ride and fall timings of the sync timing signal thereby to produce the frequency-divided clock signal of the effective frequency divider as a clock signal.