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:
Feb. 20, 1990
Filed:
Nov. 16, 1988
Akira Haga, Kawasaki, JP;
Kazuhiro Kobayashi, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A reset signal generating circuit has a voltage dividing circuit for dividing a power source voltage into a divided voltage, a first switching part controlled responsive to the divided voltage from the voltage dividing circuit and turned ON when the power source voltage rises to a value in a vicinity of a predetermined value with an arbitrary rising speed, a second switching part controlled responsive to an output signal of the first switching part and turned ON during a time in which the first switching part is ON, and a charging and discharging part including a capacitor supplied with an output signal of the second switching part for starting a charging operation from a first time when the second switching part turns ON. The charging anc discharging part outputs a reset signal for a constant time from the first time to a second time and stops to output the reset signal after the second time.