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. 25, 1997
Filed:
Feb. 02, 1994
Fujitsu Limited, Kawasaki, JP;
Abstract
A power-supply control circuit comprises a power-supply conversion circuit for converting a primary power-supply voltage into a secondary power-supply voltage; a first switching element for placing the power-supply conversion circuit into an active state or an inactive stage; a capacitor for smoothing the secondary power-supply voltage; a second switching element for placing a load circuit powered by the smoothed secondary power-supply voltage into an active state or an inactive state; and a control circuit for supplying a control mode signal to the first switching element and the second switching element, respectively. A radio select call receiver comprises a radio reception unit driven by a first power-supply voltage for receiving radio carrier waves and identifying a unique call signal conveyed by the radio carrier waves; a signal processing unit performing various kinds of call processing based on the unique call signal; and a power-supply control circuit. The power-supply circuit comprises a power-supply conversion circuit for converting a primary power-supply voltage into a secondary power-supply voltage, a first switching element for placing the power-supply conversion circuit into an active state or an inactive state, a capacitor for smoothing the secondary power-supply voltage, a second switching element for placing a signal processing unit driven by the smoothed secondary power-supply voltage into an active state or an inactive state, and a control circuit for supplying a control mode signal to the first switching element and the second switching element, respectively.