Patent application number | Description | Published |
20090045696 | Piezoelectric element driving circuit and pump device - A piezoelectric element driving circuit includes: a transformer; a switch circuit; a reactance element connected in parallel with the piezoelectric element on one of the primary side and the secondary side of the transformer, the reactance element forming a resonant circuit that performs parallel resonance at the driving frequency with a capacitance component in an equivalent circuit of the piezoelectric element and an inductance component of the transformer; a pulse generating circuit for generating a driving pulse for the switch circuit; and a duty ratio controlling circuit for being supplied with the driving pulse, limiting a duty ratio of the driving pulse such that a value of the driving voltage falls within a range equal to or lower than the specification voltage value on the load side, and outputting the driving pulse whose duty ratio is limited to the switch circuit. | 02-19-2009 |
20090167109 | PIEZOELECTRIC PUMP, COOLING DEVICE, AND ELECTRONIC APPARATUS - Disclosed is a piezoelectric pump. The piezoelectric pump includes a pump body, a drive unit, a detection section, and a control unit. The pump body includes a hole for introducing a fluid from outside thereinto and jetting the fluid from inside, a wall portion disposed so as to face the hole, and a piezoelectric body provided on the wall portion to vibrate the wall portion. The drive unit drives the piezoelectric body. The detection section detects a signal corresponding to a discharge rate of the fluid from the hole. The control unit controls a drive voltage and a drive frequency of the drive unit on the basis of the signal. | 07-02-2009 |
20090201758 | Method for designing integrated circuit incorporating memory macro - An integrated circuit design method is provided in which memory instances are assigned to memory macros integrated within an integrated circuit. The integrated circuit design method includes: assigning a plurality of memory instances operating at the same operation frequency to a single memory macro; arranging a frequency multiplier which receives a first clock signal to generate a second clock signal through frequency multiplication of the first clock signal, and feeds the second clock signal to the plurality of memory instances; and arranging a control circuit which selects the memory instances in synchronization with the first clock signal. | 08-13-2009 |
20100082137 | CONTENT SETTING VALUE INFORMATION ACQUIRING DEVICE, CONTENT OUTPUT SYSTEM, CONTENT SETTING VALUE INFORMATION ACQUIRING METHOD, ITS PROGRAM, AND RECORDING MEDIUM ON WHICH ITS PROGRAM IS RECORDED - A server of a content output system acquires a user parameter registration information including a user name of a display and a title of a request content. When an image-quality and sound-quality optimum parameter is included, the server acquires the image-quality and sound-quality optimum parameter as a user's user setting information. When the server cannot acquire the user's user setting information, the server retrieves a user parameter registration information including a user name of another person and the title of the request content. When the image-quality and sound-quality optimum parameter is included in the user parameter registration information and an image-quality and sound-quality optimum parameter relating to other contents corresponds to an image-quality and sound-quality optimum parameter relating to other contents of a user requesting an image-quality and sound-quality optimum parameter, the server acquires an image-quality and sound-quality optimum parameter of the another person relating to the request content as an another person's user setting information. Then, the server transmits the user's user setting information or another person's user setting information to the display. | 04-01-2010 |
20110142611 | COUNTER-ROTATING AXIAL FLOW FAN - A counter-rotating axial flow fan with improved characteristics and reduced noise compared to the related art can be provided. Defining the number of front blades as N, the number of stationary blades as M, and the number of rear blades as P, and defining the maximum axial chord length of the front blades as Lf, the maximum axial chord length of the rear blades as Lr, the outside diameter of the front blades as Rf, and the outside diameter of the rear blades as Rr, the counter-rotating axial flow fan satisfies the following two relationships: N≧P>M; and Lf/(Rf×π/N)≧1.25 and/or Lr/(Rr×π/P)≧0.83. | 06-16-2011 |
20110142612 | COUNTER-ROTATING AXIAL FLOW FAN - A counter-rotating axial flow fan in which the shape of stationary blades of a middle stationary portion is optimized to reduce noise is provided. Defining the maximum axial chord length of front blades as Lf, the maximum axial chord length of rear blades as Lr, and the maximum axial chord length of stationary blades as Lm, a relationship of Lm/(Lf+Lr)<0.14 is satisfied. Defining the maximum dimension between the blade chord for lower surfaces of the stationary blades and the lower surfaces as K | 06-16-2011 |
20110142614 | COUNTER-ROTATING AXIAL FLOW FAN - A counter-rotating axial flow fan with reduced noise at the target operating point achieved without modifying a front impeller, a rear impeller, or a middle stationary portion is provided. An annular rib including a projecting surface for generating turbulent flow is formed on an inner wall portion of a casing at a position off from the middle stationary portion to a side of the rear impeller, the projecting surface extending radially inwardly of the inner wall portion and extending continuously in the circumferential direction of the inner wall portion. A fluid striking the projecting surface for generating turbulent flow is partially disturbed to form a turbulent flow before entering an area in which the rear impeller is provided. The turbulent flow suppresses flow separation of a fluid flowing along the surfaces of rear blades of the rear impeller from the surfaces of the rear blades. | 06-16-2011 |
20110260691 | BATTERY CONTROLLER, BATTERY CONTROL METHOD AND PROGRAM - There is provided a battery controller including a storing unit which stores an upper limit voltage and a lower limit voltage, each defining a first voltage range in which a battery is charged/discharged, and a second upper limit voltage and a second lower limit voltage, each defining a second voltage range which is wider than the first voltage range, and a charge/discharge regulation unit which temporarily changes, when charge/discharge is performed in the first voltage range and permission for charge/discharge in the second voltage is received, setting of the battery such that charge/discharge is performed in the second voltage range. | 10-27-2011 |
20110270480 | BATTERY MODULE, ELECTRIC VEHICLE, AUTHENTICATION APPARATUS, AND DISCHARGING CONTROL METHOD FOR BATTERY MODULE - There is provided a battery module including: a power storage unit storing power; a first authentication unit carrying out first authentication via a first authentication route; a second authentication unit carrying out second authentication via a second authentication route; and a discharging control unit controlling discharging from the power storage unit to an external appliance, wherein the first authentication unit is operable, when the first authentication has succeeded, to share key information to be used in the second authentication with an authentication party for the second authentication, the second authentication unit carries out the second authentication using the key information shared with the authentication party, and the discharging control unit is operable, when the second authentication has succeeded, to permit discharging from the power storage unit. | 11-03-2011 |
20120086804 | IMAGING APPARATUS AND METHOD OF CONTROLLING THE SAME - There is provided an imaging apparatus including a power generation unit which converts natural energy into electric energy and generates electric power, an imaging unit which captures a subject image and generates imaging data, a memory which stores the imaging data, a radio communication unit which transmits the imaging data stored in the memory, a control unit which controls operation of the imaging unit and of the radio communication unit, and a battery which is charged with the generated electric energy and supplies electric power to the imaging unit, the memory, the radio communication unit, and the control unit, where the control unit estimates a charge amount of the battery in the future based on average power generation of the power generation unit and changes operation of the imaging unit or of the radio communication unit, based on the charge amount in the future. | 04-12-2012 |
20140361734 | POWER SUPPLY METHOD, CHARGING CONTROL DEVICE, AND POWER SUPPLY SYSTEM - There is provided a power supply method including an initial setting step of performing, by a charging control device, initial setting on a plurality of battery devices each including a secondary cell therein and a charging device performing contactless power transmission to transmit power to the battery devices that are provided in a stacked manner, a power transmission instruction step of providing, by the charging control device, an instruction to start the contactless power transmission from the charging device subjected to the initial setting in the initial setting step to the battery devices, a contactless power transmission step of performing the contactless power transmission from the charging device to the battery devices and a charging completion step of notifying, when charging of the battery devices is completed, the charging control device of completion of the charging by the battery devices. | 12-11-2014 |