Patent application number | Description | Published |
20090174641 | METHOD OF DRIVING LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY APPARATUS - A drive circuit of a liquid crystal display device includes a driver circuit that applies a voltage pulse to a liquid crystal of the liquid crystal display device, and a control circuit that controls the driver circuit to change the liquid crystal to a initial tone and to change the initial tone to a high tone, an intermediate tone, or a low tone. The control circuit sets a tone energy difference so as to be smaller at the intermediate tone than at the high tone close to the initial tone, the tone energy difference being a difference between an application energy of the voltage pulse applied to the liquid crystal of the initial tone to display a predetermined tone and an application energy of the voltage pulse applied to display a tone different from the predetermined tone. | 07-09-2009 |
20090322663 | DISPLAY DEVICE - A display device with low power consumption capable of canceling the collapse of gradation and skip of gradation in a high gradation part and a low gradation part and of displaying an even gradation in a wide range has been disclosed. The display device comprises a display element of dot matrix type having a display material with memory properties, a drive circuit that drives a pixel of the display element, and a control circuit that controls the drive circuit, wherein the control circuit executes an initialization step for applying a voltage pulse to initialize a pixel to be rewritten to bring the pixel into an initialization state and a gradation step for applying a voltage pulse to change the gradation state of a pixel, and in the gradation step, an alternating voltage pulse is formed in a pixel to be rewritten and the period and voltage of the alternating voltage pulse are varied in accordance with a gradation to be written. | 12-31-2009 |
20100194793 | CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE - A display device includes: a display element of a dot matrix type; a row driver that drives a row electrode of the display element; a column driver that drives a column electrode of the display element; and a multiple voltage power source that supplies a drive voltage to the row driver and the column driver, wherein: the row driver and the column driver are configured by a segment driver; and the device includes a power source switching switch which switches drive voltages to be supplied to the row driver in accordance with the polarity of an applied voltage to be applied to a pixel of the display element. | 08-05-2010 |
20110102691 | PANEL MODULE, DRIVING CIRCUIT AND DISPLAY DEVICE - A display device selects one or more of first electrodes corresponding to image data using a general-purpose segment driver and applies predetermined voltages respectively to the first electrodes of selection targets and non-selection targets. A driver control circuit outputs, according to a pulse polarity control signal, inverted image data or un-inverted image data to a segment driver. The segment driver applies voltage to second electrodes based on the image data acquired from the driver control circuit. | 05-05-2011 |
20110122104 | LIQUID CRYSTAL DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal driving device includes a plurality of scan electrodes; a signal electrode arranged along a direction that intersects with the plurality of scan electrodes and forms a pixel for each intersection with the plurality of scan electrodes; and a control circuit configured to set a drawing line that is made up of series of the pixels, and a plurality of pre-drive lines that are different from the drawing line along a direction in parallel with the scan electrode and supplies image data that corresponds to the drawing line from the signal electrode while shifting the drawing line and the plurality of pre-drive lines to a direction that intersects with the scan electrode. The control circuit discretely drives the plurality of pre-drive lines. | 05-26-2011 |
20110148845 | DRIVING METHOD OF A DISPLAY DEVICE AND DISPLAY DEVICE - A driving method of a display device includes: supplying a first drive voltage from a first circuit, which is driven using a first power-supply voltage from a first power source, and a second drive voltage from a second circuit, which is driven using a second power-supply voltage from a second power source that is lower than the first power-supply voltage; causing a driver circuit section that drives a display element to charge, using the second drive voltage, a display element in a non-selected region in a display element section that includes a plurality of display elements; maintaining a voltage of the display element in the non-selected region, using the second drive voltage. | 06-23-2011 |
20110148854 | VOLTAGE SUPPLY CIRCUIT AND DISPLAY APPARATUS - A voltage supply circuit includes a switching circuit to switch among a plurality of driving voltages including a first driving voltage and a second driving voltage lower than the first driving voltage based on an operation mode of a display apparatus and control at least one of a switching speed and a switching timing so that one of a first switching speed and a first switching timing to the first driving voltage becomes faster than a corresponding one of a second switching speed and a second switching timing to the second driving voltage. | 06-23-2011 |
20110210953 | LIQUID CRYSTAL DISPLAY DEVICE AND LIQUID CRYSTAL DRIVING METHOD - A liquid crystal display device includes a segment driver, a common driver, and a voltage setting unit. The voltage setting unit derives a voltage at which a previous drive line becomes a focal conic state regardless of image data by applying a synthesized voltage of a voltage that is applied from the segment driver and a voltage that is applied from the common driver to the previous drive line. Then, the voltage setting unit sets the voltages that are applied from the segment driver and the common driver on the basis of the derived result. | 09-01-2011 |
20110310068 | DISPLAY DEVICE - A display device includes a display part, an electrode that applies a pulse to a pixel of the display part, and a control part that controls the application of the pulse, the control part controls the position of the electrode that applies the pulse so as to change at irregular intervals. The control part selects the position of the electrode that applies the pulse alternately from the center toward both ends and densely at the center and sparsely at both ends, or alternately from both ends toward the center and densely at both ends and sparsely at the center and thus selects all the electrodes. | 12-22-2011 |
20110316891 | METHOD OF DRIVING DISPLAY ELEMENT AND DISPLAY DEVICE - A display device includes a display element and a drive circuit that drives the display element, in which the drive circuit outputs a reset pulse that changes an orientation state of liquid crystal into a first orientation state, a selection pulse that changes the first orientation state into a second orientation state by combinations of a plurality of pulses in accordance with gradation data of an image to be displayed, and a maintenance pulse that maintains the second orientation state. | 12-29-2011 |
20120062808 | CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE AND SIMPLE MATRIX DRIVING METHOD - A cholesteric liquid-crystal display device includes a cholesteric liquid-crystal display element having common electrodes and segment electrodes; a common driver which drives the common electrodes, outputs a selected-line voltage to a selected line of the common electrodes, and outputs an unselected-line voltage to unselected lines other than the selected line; a segment driver which drives the segment electrodes and outputs a write signal to the segment electrodes; a drive controlling circuit which controls the common driver and the segment driver to rewrite an image displayed on the cholesteric liquid-crystal display element; and a voltage correcting circuit which corrects the unselected-line voltage corresponding to the write signal during writing to the selected line. | 03-15-2012 |
20120081413 | DISPLAY APPARATUS AND METHOD FOR DRIVING DISPLAY APPARATUS - A display apparatus comprising: a display device comprising a cholesteric liquid crystal layer and electrodes sandwiching the cholesteric liquid crystal layer and applying a voltage to a pixel; a voltage driver capable of applying a first pulse and a second pulse to the electrodes, the first and second pulses having different polarities; and a directing circuit directing the voltage driver as to a position to which the first pulse is to be applied and a position to which the second pulse is to be applied in a predetermined period according to a gray level to be produced in the pixel. | 04-05-2012 |
20130050598 | DRIVE METHOD OF DISPLAY ELEMENT INCLUDING CHOLESTERIC LIQUID CRYSTAL AND CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE - A cholesteric liquid crystal display device includes: a cholesteric liquid crystal display element; a segment driver and a common driver; a multi-voltage generation circuit configured to generate voltages supplied to the segment driver and the common driver; a temperature sensor; and a control circuit configured to control the segment driver, the common driver, and the multi-voltage generation circuit, wherein the control circuit: controls the segment driver and the common driver to perform a dynamic drive sequence having a preparation period during which the cholesteric liquid crystal is brought into a homeotropic state, a selection period during which the final state of the cholesteric liquid crystal is selected, and an evolution period during which the cholesteric liquid crystal is made to transition to the state selected during the selection period; and controls the applied voltage to the cholesteric liquid crystal during the evolution period to change in accordance with temperature. | 02-28-2013 |
20130258220 | CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR CONTROLLING DRIVE OF CHOLESTERIC LIQUID CRYSTAL DISPLAY ELEMENT - A cholesteric liquid crystal display device includes a passive matrix cholesteric liquid crystal display element, a drive circuit configured to apply a voltage pulse by a dynamic driving scheme to the cholesteric liquid crystal display element, an electrostatic capacitance detection circuit configured to detect the electrostatic capacitance of the display element; and a drive condition adjustment circuit configured to set a display state by driving the display element under a predetermined drive condition and then to adjust the drive condition of the display element based on the electrostatic capacitance of the display element detected by the electrostatic capacitance detection circuit, wherein the drive condition adjustment circuit searches for and determines an optimum evolution voltage with a temporarily-determined number of pulses during an evolution period and then searches for and determines an optimum value of the number of pulses during the evolution period with the determined evolution voltage. | 10-03-2013 |
Patent application number | Description | Published |
20130198537 | UNINTERRUPTIBLE POWER SUPPLY DEVICE AND COMPUTER SYSTEM - An uninterruptible power supply device has a main power source and a backup power source and supplies power to a computer. The uninterruptible power supply device has an output power detection circuit and a control circuit which measures time until a completion of the power-off process of the computer. The control circuit alerts or extends a set time until the power-off according to the measured time. | 08-01-2013 |
20130246815 | BACKUP POWER SUPPLY DEVICE, POWER SUPPLY SYSTEM, COMPUTER SYSTEM, METHOD FOR CONTROLLING POWER SUPPLY OF COMPUTER SYSTEM, AND RECORDING MEDIUM - A backup power supply device that is used as a backup for a normal power supply device that includes a first converter configured to convert a first alternating-current voltage into a first direct-current voltage and a second converter configured to convert the first direct-current voltage into a second direct-current voltage includes a first detector that is coupled to an output of the first converter and outputs a first detection signal when the first direct-current voltage is lower than a first predetermined value; a third converter that converts a second alternating-current voltage into a third direct-current voltage; a battery that is charged by the third direct-current voltage; and a first switch that connects an output of the battery or an output of the third converter to an input of the second converter based on the output of the first detection signal. | 09-19-2013 |
20140237290 | INFORMATION PROCESSING APPARATUS, METHOD FOR CONTROLLING INFORMATION PROCESSING APPARATUS, AND INFORMATION PROCESSING SYSTEM - According to an aspect of an embodiment, an information processing apparatus includes a save unit, a stopping unit and a reserve power supply unit. The save unit saves, in a device including an uninterruptible power supply device, first information including information stored in a memory allocated to a virtual machine operated by the information processing apparatus and information stored in a register allocated to the virtual machine at a time of a power outage. The stopping unit stops the virtual machine when the save of the first information is completed. The reserve power supply unit supplies power needed for the processing performed by the save unit and the stopping unit at the time of the power outage. | 08-21-2014 |
20150074365 | INFORMATION PROCESSING APPARATUS AND DUPLICATION METHOD - An information processing apparatus duplicates the state of the own apparatus into a storage device at the time of the loss of a power supply. Furthermore, the information processing apparatus duplicates a difference of the state of the own apparatus at a predetermined time interval. Furthermore, the information processing apparatus estimates the time period needed to duplicate the difference. Then, the information processing apparatus determines whether the estimated time period is longer than the time period for which a battery operates the information processing apparatus at the time of the loss of the power supply. When the information processing apparatus determines that the estimated time period is longer than the time period for which the battery operates the information processing apparatus, the information processing apparatus reduces the time interval of the duplication. | 03-12-2015 |
Patent application number | Description | Published |
20090080123 | MAGNETORESISTANCE EFFECT ELEMENT AND MAGNETORESISTIVE DEVICE - The high quality magnetoresistance effect element is capable of reducing resistance in the perpendicular-plane direction and preventing performance deterioration of a barrier layer. The magnetoresistance effect element comprises: a free layer; a pinned magnetic layer; and a barrier layer being provided between the free layer and the pinned magnetic layer, and the barrier layer is composed of a semiconductor. | 03-26-2009 |
20090128962 | READ-HEAD, MAGNETIC HEAD AND MAGNETIC STORAGE APPARATUS - The read-head is capable of corresponding to high recording density without deteriorating characteristics even if a small size read-element is used. The read-head of the present invention comprises: a read-element including a free layer; and a magnetic domain control layer for domain-controlling the free layer. The magnetic domain control layer is composed of a soft magnetic material including at least one substance selected from the group consisting of Fe, Co and Ni. A ratio (a/b) of a length (a) of the magnetic domain control layer in the core width direction to a length (b) thereof in the height direction is 5 or more, and the length (b) is 100 nm or less. | 05-21-2009 |
20090168270 | EXCHANGE-COUPLED ELEMENT AND MAGNETORESISTANCE EFFECT ELEMENT - In comparison with conventional exchange-coupled elements, the exchange-coupled element of the present invention has greater unidirectional magnetization anisotropy. The exchange-coupled element comprises: an ordered antiferromagnetic layer; and a pinned magnetic layer being exchange-coupled with the ordered antiferromagnetic layer, the pinned magnetic layer having unidirectional magnetization anisotropy. The pinned magnetic layer is constituted by a first pinned magnetic layer having a composition, which can have a face-centered cubic lattice structure, and a second pinned magnetic layer having a composition, which can have a body-centered cubic lattice structure. | 07-02-2009 |
20090169915 | METHOD OF PRODUCING MAGNETORESISTANCE EFFECT ELEMENT AND MAGNETORESISTANCE EFFECT ELEMENT - The method of the present invention provides a magnetoresistance effect element, which is capable of having a high MR ratio, corresponding to high density recording and being suitably applied to a magnetoresistance device even though a barrier layer is thinned to reduce resistance of the magnetoresistance effect element. The method of producing the magnetoresistance effect element, which includes the barrier layer composed of an oxidized metal, a first magnetic layer contacting one of surfaces of the barrier layer and a second magnetic layer contacting the other surface thereof, comprises the steps of: laminating the barrier layer on the first magnetic layer with using a target composed of the oxidized metal; and laminating the second magnetic layer on the barrier layer. The barrier layer is annealed before laminating the second magnetic layer thereon. | 07-02-2009 |
20090207532 | MAGNETO RESISTANCE EFFECT DEVICE, HEAD SLIDER, MAGNETIC INFORMATION STORAGE APPARATUS, AND MAGNETO RESISTANCE EFFECT MEMORY - A magneto resistance effect device includes a fixed magnetization portion including a ferromagnetic material, in which the magnetization direction can be fixed, and a tunnel barrier layer including high band gap metal oxide and low band gap metal oxide, and arranged on the fixed magnetization portion. The device includes a free magnetization portion including a ferromagnetic material, arranged on the tunnel barrier layer, in which the magnetization can be changed. | 08-20-2009 |
20130006593 | METHOD FOR SIMULATING MAGNETIC MATERIAL - A method for simulating a magnetic material includes: repeatedly performing a first process and a second process until the change of magnetization and a static magnetic field converges, the first process being to calculate a distribution of the magnetization and an average magnetization in a magnetic material model of micromagnetics, and the second process being to assign the magnetic material model of the micromagnetics to each mesh included in another magnetic material model, calculate the static magnetic field of the another magnetic material model using the calculated average magnetization, and return the calculated static magnetic field to the calculation of the distribution of the magnetization; generating a hysteresis loop of each mesh included in the another magnetic material model based on the calculated average magnetization and the calculated static magnetic field, and calculating a hysteresis loss of the another magnetic material model from an area of the generated hysteresis loop. | 01-03-2013 |
20130073270 | SIMULATION APPARATUS AND SIMULATION METHOD - A computer-readable medium stores a magnetic substrate simulation program causing a computer to execute a process that includes calculating an effective magnetic field for each area of an element in the magnetic substrate, when magnetization of each area changes and based on a magnetic field generated from magnetic energy in each area and a rate of change of magnetization working in a direction inhibiting change in the average magnetization of the areas; obtaining for each area and based on the calculated effective magnetic fields and magnetization of each area, changes in magnetization and calculating for each area, magnetization after the changes; judging based on magnetization of each area before and after the changes, whether magnetization in the element converges; and storing a combination of the average magnetization of the areas for which magnetization in the given element converges and a static magnetic field based on the average magnetization. | 03-21-2013 |