RICHOH COMPANY, LTD.
RICHOH COMPANY, LTD. Patent applications | ||
Patent application number | Title | Published |
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20100277227 | POWER SUPPLY CIRCUIT AND METHOD FOR CONTROLLING THE SAME - A power supply circuit includes a charge pump circuit configured to raise a voltage inputted from an input terminal and supply the raised voltage from an output terminal to a given load and a control circuit unit. The charge pump circuit includes a fly-back capacitor configured to store a charge of the voltage inputted from the input terminal and an output transistor connected between one terminal of the fly-back capacitor and the output terminal of the charge pump circuit. The control circuit unit receives a reference voltage and the voltage outputted from the charge pump circuit and is configured to generate a proportional voltage proportional to the voltage outputted from the charge pump circuit and output a voltage to control the output transistor depending on a difference between the proportional voltage and the reference voltage so that the proportional voltage has the same voltage level as the reference voltage. | 11-04-2010 |
20090121683 | BACK-GATE VOLTAGE GENERATOR CIRCUIT, FOUR-TERMINAL BACK GATE SWITCHING FET, AND CHARGE AND DISCHARGE PROTECTION CIRCUIT USING SAME - A back-gate voltage generator circuit generating a back-gate voltage of a four-terminal back gate switching MOSFET for charge and discharge control is disclosed. The back-gate voltage generator circuit includes first and second n-type MOSFETs connected in series through a common source electrode. A voltage at the common source electrode of the first and second n-type MOSFETS connected in series serves as the back-gate voltage of the four-terminal back gate switching MOSFET, and the back-gate voltage is used as a reference voltage for generating signals for controlling the first and second n-type MOSFETS. | 05-14-2009 |
20080231906 | IMAGE PROCESSING APPARATUS - A disclosed image processing apparatus enables input of various documents, addition of various types of embedded information, and implementation of various behaviors associated with embedded information detection results. Information embedded in input document data is detected, and an image processing associated with a detection result is carried out. The image processing apparatus includes a document input mechanism, an embedded information analysis mechanism, a behavior determination mechanism, a document output mechanism, and an image management mechanism. In one embodiment, an interface via which the document input mechanism and the embedded information analysis mechanism are connected, and another interface via which the document input mechanism and the image management mechanism are connected are fixed, so that the document input mechanism can be replaced with a new document input mechanism that inherits from those fixed interfaces, without affecting the other mechanisms. | 09-25-2008 |