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. 09, 1993
Filed:
Feb. 04, 1991
Applicant:
Inventors:
Takashi Ito, Kokubunji, JP;
Kenichi Ishibashi, Tachikawa, JP;
Kenzo Funatsu, Musashimurayama, JP;
Naoki Yashiki, Kodaira, JP;
Katsumi Iwata, Kokubunji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395550 ; 364D / ; 364934 ; 3649342 ; 3649344 ; 364950 ; 3649504 ; 3649505 ;
Abstract
Operation of a clock generating circuit is stopped when the oscillation signals to be selectively transmitted to the clock generating circuit via a multiplexer are switched. The oscillation signals are generated by a first oscillation circuit at a relatively high frequency and by a second oscillation circuit which steadily oscillates at a relatively low frequency. The clock generating operation is resumed in synchronization with the switched oscillation signals.