Patent application number | Description | Published |
20090219673 | Information equipment - Information equipment includes an open/close mechanism that opens or closes exhaust ports, a cooling fan that dissipates heat in the information equipment into the air through the exhaust ports, a user state detecting part that detects a contact state in which the hand of a user is in contact with the information equipment or a closeness state in which the hand of the user is close to the information equipment, and a heat dissipation control part that controls an open/closed state of the open/close mechanism so that heat exhausted from the exhaust ports is not directed to the hand of the user that is contact with or close to the information equipment, in accordance with the contact state or the closeness state detected by the user state detecting part. | 09-03-2009 |
20090222147 | TEMPERATURE CONTROLLING APPARATUS, INFORMATION PROCESSING APPARATUS, AND RECORDING MEDIUM - A temperature controlling apparatus determines a fan rotation speed from a surrounding noise and a fan noise, measures a temperature of a large scale integration (LSI) device or the like that is a controlled object, determines, in a cooling capacity range of the determined fan rotation speed, an operating clock frequency that falls within an allowable temperature range, and controls the LSI to be connected. | 09-03-2009 |
20100162008 | Information processing device, information processing system, program and controller - An information processing device is provided. The information processing device which operates upon receipt of power supply from a power unit connected to an alternative current power source or from a battery includes an obtaining unit which obtains load information of parts included in the information processing device itself, a deciding unit which decides a voltage value to be supplied by the power unit which supplies electric power to the information processing device, based on the load information obtained by the obtaining unit, and an output unit which outputs a signal relative to the voltage value decided by the deciding unit to the power unit. | 06-24-2010 |
20100169674 | POWER-SOURCE CONTROL SYSTEM AND POWER-SOURCE CONTROL METHOD - A power-source control system and method which calculates required power representing electric power to be supplied to an information processing apparatus, supplies electric power corresponding to the required power calculated, controls the power-source apparatus, generates frequency information representing an operating frequency to be determined by the frequency controller in accordance with a load of a CPU, and changes the operating frequency of the CPU by assigning the operating frequency represented by the frequency information to the CPU when the electric power to be used in the information processing apparatus is adjusted using the required power calculated. | 07-01-2010 |
20100201306 | CHARGING SYSTEM, PROCESSOR AND FEEDER - A charging system including: a processor that includes a containing part for selectively containing either one of a secondary battery of a first type and a secondary battery of a second type capable of being rapidly charged with an electrical quantity greater than that of the secondary battery of the first type, and that carries out processing using, as a power source, the secondary battery contained in the containing part; and a feeder for feeding power to the processor so as to charge the secondary battery, wherein the processor includes: a determination part for determining whether or not the contained secondary battery needs to be charged; a battery detection part for detecting the type of the contained secondary battery when it is determined that the secondary battery needs to be charged; and a transmission part for transmitting, to the feeder, a feed instruction. | 08-12-2010 |
20100264746 | WIRELESS POWER TRANSMITTING SYSTEM, POWER RECEIVING STATION, POWER TRANSMITTING STATION, AND RECORDING MEDIUM - A wireless power transmitting system that transmits power from a power transmitting station to a power receiving station wirelessly includes the power receiving station. The power receiving station includes a unit receiving power from the power transmitting station, a unit obtaining a level of power received through the antenna, a unit obtaining a level of power consumed by the device operating while being supplied with received power and a unit transmitting the received power level and the power consuming level to the power transmitting station wirelessly. The power transmitting station includes a unit receiving the received power level and the power consuming level from the power receiving station wirelessly, a unit controlling the level of power transmitted through the transmitting antenna based on the difference between the received power level and the received power consuming level, and a unit transmitting power to the power receiving station wirelessly. | 10-21-2010 |
20100325465 | POWER MANAGEMENT APPARATUS AND METHOD - An information processing apparatus and method include measuring power consumptions of devices and outputting power consumption data, receiving operational conditions of the devices for measuring the power consumptions of the devices, setting the operational conditions of the devices according to application-setting conditions, and executing an application program to measure reference power consumptions for executing the application program. The information processing apparatus includes a power consumption data-transmitting section transmitting power consumption data, a normalized power consumption-calculating section receiving normalized reference power consumption calculated from reference power consumptions of information processing apparatuses, and calculating normalized power consumption from the normalized reference power consumption and the reference power consumptions. | 12-23-2010 |
20110231860 | LOAD DISTRIBUTION SYSTEM - A load distribution system for allocating a job to one of a plurality of arithmetic devices includes a temperature data acquirer, a candidate selector, and a job allocator. The temperature data acquirer acquires temperature data indicating temperature of each of the plurality of arithmetic devices. The candidate selector selects at least one of the plurality of arithmetic devices as a candidate for a device to which the job is to be allocated. The job allocator allocates the job to the selected candidate. | 09-22-2011 |
20120008351 | VOLTAGE-DIVIDING POWER FACTOR CORRECTION CIRCUIT, VOLTAGE-DIVIDING POWER FACTOR CORRECTION APPARATUS AND VOLTAGE-DIVIDING POWER FACTOR CORRECTION METHOD - A circuit include: a first power factor correction circuit that forces current produced by the positive AC voltage to be in phase with the positive AC voltage so that a power factor of electric power is improved; a second power factor correction circuit that forces current produced by the negative AC voltage to be in phase with the negative AC voltage so that a power factor of electric power is improved; and an output circuit including a first capacitor storing first electric power with a power factor improved by the first power factor correction circuit and a second capacitor storing second electric power with a power factor improved by the second power factor correction circuit, the first capacitor and the second capacitor being provided in series, the output circuit outputting the first electric power stored in the first capacitor and the second electric power stored in the second capacitor. | 01-12-2012 |
20120153929 | DC-DC CONVERTER, MODULE, POWER SUPPLY DEVICE, AND ELECTRONIC APPARATUS - A controller CT | 06-21-2012 |
20120163052 | Power supply unit and information processor - A power supply unit includes multiple input terminals to which alternating-current power is input; a positive terminal and a negative terminal for outputting direct-current power; a rectifier circuit configured to rectify the input alternating-current power; a first inductor connected to the rectifier circuit; a first capacitor connected between the positive terminal and the negative terminal; a first rectifying device connected between the output terminal of the first inductor and the positive terminal and having a rectification direction in a direction from the output terminal of the first inductor toward the positive terminal; a switching device connected between an input terminal of the first rectifying device and the negative terminal; a second rectifying device and a second capacitor connected in parallel to the switching device; and a second inductor connected between a connection of the second rectifying device and the second capacitor and the positive terminal. | 06-28-2012 |
20120182769 | DC-DC CONVERTER, POWER SUPPLY UNIT AND AN INFORMATION PROCESSING APPARATUS - A DC-DC converter is disclosed that includes a first winding of a first transformer to which direct current power is supplied, a switching element configured to be connected in series with the first winding of the first transformer, a first winding of a second transformer and a capacitor configured to be connected in series with each other and in parallel with the switching element, a second winding of the first transformer configured to be coupled with the first winding of the first transformer, output terminals configured to be connected to the second winding of the first transformer and to output direct current power, and a pair of second windings of the second transformer configured to be coupled with the first winding of the second transformer, the second windings of the second transformer being connected in parallel with each other with reverse polarity between the output terminals. | 07-19-2012 |
20120236045 | DISPLAY CONTROL APPARATUS AND DISPLAY CONTROL METHOD - The disclosed method includes: detecting a case where at least both of a condition that a pointer representing a pointing destination by a pointing device is not displayed on one display device of a plurality of display devices and a condition that a window generated by a predetermined program is not displayed on the one display device are satisfied; and upon the detecting, lowering brightness of the one display device. Moreover, another method includes: first detecting a predetermined operation for an active window displayed on any display device; identifying a first display device on which the active window is displayed; second detecting that a pointer representing a pointing destination by a pointing device is not displayed on the first display device after a predetermined period elapsed since the first detecting; and upon the second detecting, carrying out a setting for lowering brightness of the first display device. | 09-20-2012 |
20120242302 | POWER SUPPLY DEVICE - A power supply device includes a step-down unit to step down an input voltage, a switching unit to perform switching on a stepped-down voltage obtained through the stepping down by the step-down unit so as to externally output the voltage, an output variation detection unit to detect a corresponding variation of output from the switching unit, a delay unit to delay the input voltage by a prescribed time period, a delay variation detection unit to detect a corresponding variation of a delayed voltage output from the delay unit, an addition unit to add corresponding variations of the power supply voltage and the delayed voltage respectively detected by the output variation detection unit and the delay variation detection unit, and a control unit to perform feedback control on the basis of the corresponding variations of the power supply voltage and the delayed voltage added by the addition unit. | 09-27-2012 |
20130099768 | CONTROL CIRCUIT AND ELECTRONIC APPARATUS USING THE SAME - A control circuit includes: a first switching device that includes a source, a gate, and a drain; a negative voltage generating circuit that generates, from a pulse width modulation signal that controls the gate of the first switching device, a negative potential voltage which is equal to or smaller than a threshold of the first switching device; a gate control circuit that outputs a signal obtained by shifting a level of the pulse width modulation signal by an amount equal to the negative potential voltage to the gate of the first switching device; a second switching device that is disposed on a side of the drain of the first switching device; and a negative voltage detecting circuit that outputs a signal for turning ON the second switching device upon detecting that the negative potential voltage generated by the negative voltage generating circuit has reached a predetermined negative potential. | 04-25-2013 |
20130262904 | STORAGE APPARATUS AND METHOD OF DETERMINING DEVICE TO BE ACTIVATED - In a storage apparatus, a calculation unit calculates first power consumption by adding the power consumption of a first storage device not in use to the total power consumption of a plurality of storage devices in operation, and calculates second power consumption by adding the power consumption of a second storage device not in use to the total power consumption of the plurality of storage devices in operation, and subtracting therefrom the power consumption of one of the plurality of storage devices in operation, from which data is movable to the second storage device. A determination unit determines to activate the first storage device when the second power consumption is not lower than the first power consumption, and determines to activate, the second storage device when the second power consumption is lower than the first power consumption. | 10-03-2013 |
20130322129 | POWER FACTOR CORRECTION CIRCUIT - This is an insulation-type power factor correction circuit including a resonance unit configured to accumulate energy of a surge occurring when the first switching element is turned off and to transmit a resonance current generated by resonating the first capacitor and the primary winding of the second transformer from the primary winding of the second transformer to the secondary winding, a rectifier unit configured to rectify a resonance current output from the resonance unit, a smoothing unit configured to regenerate power output from the rectifier unit to an output of the insulation-type power factor correction circuit, and a control unit configured to control a first switching element for each cycle. | 12-05-2013 |
20140153288 | DC-DC CONVERTER WITH LC RESONANCE CIRCUIT - A DC-DC converter includes a capacitor configured to be charged for a predetermined period by an external voltage, an inductor configured to constitute an LC resonance circuit together with the capacitor, a closed-loop current path configured to release energy accumulated in the capacitor after the predetermined period to cause a current flowing in the LC resonance circuit to oscillate, a transformer configured to receive a current flowing in the closed-loop current path, and a rectifying circuit situated on an output side of the transformer. | 06-05-2014 |
20140169051 | POWER SUPPLY DEVICE - A power supply device includes: a first serial circuit coupled between a first output terminal and a second output terminal, and including a first switching element and a first rectification element; a second serial circuit coupled between the first output terminal and the second output terminal, and including a second switching element and a second rectification element; a third switching element inserted between a connection point between a first inductor and a first input terminal, and a second output terminal; a fourth switching element inserted between a connection point between a second inductor and a second input terminal, and the second output terminal; a control circuit configured to control the first and second switching elements; and a synchronous rectification control circuit configured to control the third and fourth switching elements. | 06-19-2014 |
20140232365 | CONTROL DEVICE, CONTROL METHOD, AND POWER SUPPLY DEVICE - A control device includes: a power supply circuit that controls output voltage using a switching element; a generation unit that generates a reference signal on the basis of the output voltage from the power supply circuit; a PWM unit that generates a PWM signal that is output to the switching element by comparing the reference signal with a carrier signal; and a switching unit that switches a frequency of the carrier signal by changing amplitude of the carrier signal, wherein the generation unit generates the reference signal on the basis of the frequency. | 08-21-2014 |
20150084607 | POWER SUPPLY APPARATUS - A power supply apparatus includes a power supply section and a control section. The power supply section includes a first switch which performs switching of power-supply output, an inductor and a capacitor which form an LC circuit that resonates current flowing through the first switch, and a second switch which changes capacitance of the capacitor. The control section finds in advance a correspondence between a time ratio of a switching pulse of the first switch and a resonance frequency which matches an edge of a switching pulse having each time ratio, and controls switching of the second switch so as to resonate the LC circuit at a resonance frequency corresponding to a time ratio at operation time. | 03-26-2015 |