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:
Jul. 14, 2009
Filed:
Apr. 17, 2007
Hirokazu Miyazaki, Kanagawa, JP;
Katsuaki Matsui, Kanagawa, JP;
Hirokazu Miyazaki, Kanagawa, JP;
Katsuaki Matsui, Kanagawa, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
In a step-up booster circuit, a number of pump circuits are connected in series. Pump control signals are outputted from a pump control circuit, and the pump circuits accordingly generate a required raised voltage by stepping up voltages of signals inputted to the respective pump circuits. The step-up circuit includes an activation control circuit which generates a pump activation signal in accordance with provided signals, which direct operation of the step-up circuit. The pump control circuit controls output of the pump control signals in accordance with a voltage of the pump activation signal.