Invention Grant
- Patent Title: Driving circuitry and an integrated circuit for use therein
- Patent Title (中): 驱动电路和用于其中的集成电路
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Application No.: US12470395Application Date: 2009-05-21
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Publication No.: US08487596B2Publication Date: 2013-07-16
- Inventor: Michiharu Shoji
- Applicant: Michiharu Shoji
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2008-134320 20080522
- Main IPC: G05F1/00
- IPC: G05F1/00
Abstract:
Driving circuitry having driving means for driving a load using a first DC voltage, regulator means for receiving an input voltage and deriving a regulated output voltage from the input voltage, and power source switch means switchable between a first state in which the first DC voltage is supplied to the regulator means as the input voltage and a second state in which a second DC voltage, lower than the first DC voltage and higher than the regulated output voltage, is supplied to the regulator means as the input voltage, second voltage deriving means for deriving the second DC voltage from the first DC voltage, and switch control means connected to the power source switch means for causing the power source switch means to switch from the first state to the second state when the second DC voltage is suitable for supply to the regulator means as the input voltage.
Public/Granted literature
- US20090289613A1 DRIVING CIRCUITRY AND AN INTEGRATED CIRCUIT FOR USE THEREIN Public/Granted day:2009-11-26
Information query
IPC分类:
