10th week of 2009 patent applcation highlights part 24 |
Patent application number | Title | Published |
20090058289 | Materials for Organic Electroluminescent Devices - The present invention relates to triaylamines which are substituted by defined groups. These compounds can be used for producing organic electroluminescent devices. | 2009-03-05 |
20090058290 | Organic EL display device - The present invention provides an organic EL display device which has a long lifetime. The organic EL display device includes a plurality of pixels each of which is constituted of a top-emission-type active matrix organic EL element. The top-emission-type active matrix organic EL element includes: a pixel electrode which is connected to an active element; a reflective layer arranged between the pixel electrode and an active element and is formed over a leveling layer; an organic light emission layer which is arranged on the pixel electrode; and a common electrode which is arranged on the organic light emission layer. The reflective layer includes: a first reflective layer which is made of high-melting-point metal; and a second reflective layer which is arranged on the first reflective layer and is made of alloy containing aluminum, an aluminum compound or aluminum silicide. The second reflective layer includes a planer pattern in which an outer periphery of the second reflective layer is surrounded by the first reflective layer. The pixel electrode covers the second reflective layer. | 2009-03-05 |
20090058291 | LIGHT-EMITTING DEVICE - A light-emitting device is provided, which includes a first substrate, a first pair of electrodes formed above the first substrate, a second substrate disposed apart from the first substrate, a second pair of electrodes formed above the second substrate, a selective permeable layer disposed between the first substrate and the second substrate, a first light-emitting layer disposed between the first substrate and the selective permeable layer, a second light-emitting layer disposed between the second substrate and selective permeable layer. The first light-emitting layer contains a first light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt. The second light-emitting layer contains a second light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt. The selective permeable layer is non-permeable or hardly permeable to the first and second light-emitting materials but permeable to the supporting salt. | 2009-03-05 |
20090058292 | FLAT PANEL DISPLAY AND FABRICATING METHOD THEREOF - A method of manufacturing a flat panel display includes preparing a cover substrate, forming a frit along an edge of the cover substrate, irradiating a first laser to the cover substrate, aligning and combining the cover substrate with the insulating substrate, the insulating substrate having a display element, and irradiating a second laser to the frit interposed between the cover substrate and the insulating substrate. Thus, the present invention provides a flat panel display that can minimize inflow of moisture and hydroxyl from the frit to the display element during the joining process of the insulating substrate and the cover substrate. | 2009-03-05 |
20090058293 | DISPLAY DEVICE - A display device includes an array substrate having a self-luminous element in a display area, a sealing substrate which is disposed to be opposed to the self-luminous element side of the array substrate, a sealant which is disposed in a frame shape in a manner to surround the display area, and attaches the array substrate and the sealing substrate, a signal supply wiring which is disposed in the display area, extends under the sealant, and is led out to an extension portion of the array substrate, which extends outward from an end portion of the sealing substrate, and a protection film which is disposed to cover the self-luminous element, wherein the protection film is disposed to further cover the signal supply wiring which is opposed to the end portion of the sealing substrate on an outside of the sealant. | 2009-03-05 |
20090058294 | Light emitting display device and method for fabricating the same - Disclosed are a light emitting display device and a method for fabricating the same. The light emitting display device according to the present embodiments includes a first substrate including a pixel region and a non-pixel region surrounding the pixel region; a plurality of light emitting diodes disposed in the pixel region of the first substrate, and each including a first electrode, a light emitting layer, and a second electrode; and a second substrate disposed to face the first substrate. Also, the light emitting display device according to the present embodiments includes a sealant by coupling the first substrate to the second substrate to encapsulate the pixel region; and a spacer disposed between the first substrate and the second substrate and provided in a non-light emission region arranged between the adjacent light emitting diodes. In this case, the spacer is disposed on the second electrode of the non-light emission region to be in contact with the second substrate. | 2009-03-05 |
20090058295 | FLAT COPLANAR-DISCHARGE LAMP AND USES OF SAME - A flat discharge lamp transmitting radiation in ultraviolet or visible, including first and second flat, or substantially flat, glass elements substantially parallel to each other and defining an internal space filled with gas, the first and/or second glass element being made of a material that transmits the radiation; at least one first electrode and at least one second electrode, which may be at different potentials and may be supplied by an AC voltage, the first and second electrodes being associated with one or more main faces of the first glass element, the first and second electrodes being essentially elongate and substantially parallel to one another, and separated by at least one interelectrode space of given width substantially constant; and at least one third electrode which may be at a given potential associated with a main face of the second glass element and at least partly occupying, in projection, the interelectrode space. | 2009-03-05 |
20090058296 | PLASMA DISPLAY PANEL - The PDP has front panel ( | 2009-03-05 |
20090058297 | PROTECTING LAYER COMPRISING MAGNESIUM OXIDE LAYER AND ELECTRON EMISSION PROMOTING MATERIAL, METHOD FOR PREPARING THE SAME AND PLASMA DISPLAY PANEL COMPRISING THE SAME - A protecting layer is formed of a magnesium oxide layer and electron emission promoting material formed on the magnesium oxide layer. The electron emission promoting material may be patterned on the magnesium oxide layer, or may be sprayed and heat-treated on the surface of the magnesium oxide layer. The protecting layer exhibits excellent electron emission characteristics while not being substantially damaged by plasma ions, thereby improving the reliability of a PDP. | 2009-03-05 |
20090058298 | PLASMA DISPLAY PANEL AND METHOD OF FABRICATING THE SAME - A plasma display panel and a method of fabricating the same are provided. The plasma display panel may include a first panel having address electrodes, a first dielectric layer, and phosphors all provided with a first and a second panel having transparent electrodes, bus electrodes exhibiting a color that is complementary to a color of the first panel, a second dielectric layer, and a protect layer all provided with a second substrate. The first panel may be coupled to the second panel with barriers positioned therebetween so as to define a plurality of discharge cells. | 2009-03-05 |
20090058299 | Excimer lamp - A excimer lamp comprises an electric discharge container in which a sealing member is provided between a lid member and an arc tube which does not contain silica, and a pair of external electrodes which are separately provided on an outer surface of the arc tube, wherein rare gas and a fluoride is enclosed in the electric discharge container, and the fluoride is sulfur hexafluoride, carbon tetrafluoride, or nitrogen trifluoride. | 2009-03-05 |
20090058300 | Short metal vapor ceramic lamp - A high intensity arc discharge lamp having a short metal seal plug running hotter than typical of capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal lamp. Corrosive fill materials, such as halogens are excluded. Zinc may be used to in starting the lamp. | 2009-03-05 |
20090058301 | Magnetron device with mode converter and related methods - The present invention provides a relativistic magnetron with axial extraction, or magnetron with diffraction output (MDO), with a mode converter placed directly within the diffraction output of radiation to effectively convert the operating π-mode into a radiated mode of simpler radiation patterns. | 2009-03-05 |
20090058302 | THERMAL FOLDBACK FOR LINEAR FLUORESCENT LAMP BALLASTS - A ballast circuit that facilitates providing thermal protection for a fluorescent lamp includes a coupling transformer that couples an inverter circuit to a control circuit. First and second transformer windings in the inverter circuit, and a third transformer winding in the control circuit, are wound around a common ferrite core. The ferrite core has a Curie temperature that approximates a maximum allowable threshold temperature for the lamp. When the temperature of the ballast approaches the Curie temperature of the ferrite core, its permeability, and thus inductance, drops dramatically, causing an increase in operating frequency in the inverter circuit. This increased operating frequency causes a capacitor in the control circuit to charge to a threshold voltage, at which power to the inverter circuit is reduced. The lamp then dims without turning off until the temperature is reduced to an acceptable level. | 2009-03-05 |
20090058303 | High Frequency Generator for Ion and Electron Sources - A device for coupling ionization energy into an ion or electron source, which is excited inductively or inductively-capacitively is provided. The device includes: a discharge vessel for a gas, which is to be ionized; a coupling coil, which is wound around the discharge vessel and feeds in a high frequency energy, which is required for plasma excitation; a coupling capacitor, which is electrically coupled to the coupling coil; a high frequency generator, which is electrically coupled to the coupling coil. The high frequency generator forms, together with the at least one coupling capacitor, a resonant circuit. The high frequency generator includes a PLL controller for automatic impedance matching of the resonant circuit, so that the resonant circuit can be driven at a resonant frequency. | 2009-03-05 |
20090058304 | Inductively-Coupled RF Power Source - A system and method are disclosed for implementing a power source including a power amplifier that generates a radio-frequency power signal with an adjustable operating frequency. The power amplifier also generates a reference phase signal that is derived from the radio-frequency power signal. An impedance match provides the radio-frequency power signal to a plasma coil that has a variable resonance condition. A phase probe is positioned adjacent to the plasma coil to generate a coil phase signal corresponding to the adjustable operating frequency. A phase-locked loop then generates an RF drive signal that is based upon a phase relationship between the reference phase signal and the coil phase signal. The phase-locked loop provides the RF drive signal to the power amplifier to control the adjustable operating frequency, so that the adjustable operating frequency then tracks the variable resonance condition. | 2009-03-05 |
20090058305 | COMPACT HIGH CURRENT RARE-EARTH EMITTER HOLLOW CATHODE FOR HALL EFFECT THRUSTERS - An apparatus and method for achieving an efficient central cathode in a Hall effect thruster is disclosed. A hollow insert disposed inside the end of a hollow conductive cathode comprises a rare-earth element and energized to emit electrons from an inner surface. The cathode employs an end opening having an area at least as large as the internal cross sectional area of the rare earth insert to enhance throughput from the cathode end. In addition, the cathode employs a high aspect ratio geometry based on the cathode length to width which mitigates heat transfer from the end. A gas flow through the cathode and insert may be impinged by the emitted electrons to yield a plasma. One or more optional auxiliary gas feeds may also be employed between the cathode and keeper wall and external to the keeper near the outlet. | 2009-03-05 |
20090058306 | BLACKLIGHT UNIT AND DISPLAY DEVICE - The light-guide plate has an extended portion. The extended portion has a recess formed in a thickness direction, and the optical sensor is arranged within the recess. | 2009-03-05 |
20090058307 | Illumination device and method for adapting an emission characteristic of an illumination device - An illumination device is specified which includes a radiation source having at least one light-emitting diode, a control unit and a radiation receiving unit. The radiation receiving unit is provided, during operation of the illumination device for receiving both a radiation emitted by the radiation source and a reference radiation and for generating a measurement signal upon receiving the radiation from the radiation source and a reference signal upon receiving the reference radiation. An operating point for the radiation source is tunable by the control unit in a manner dependent on the measurement signal and the reference signal. Furthermore, a method is specified by which an emission characteristic of an illumination device can be adapted to a predetermined emission characteristic in a simplified manner. | 2009-03-05 |
20090058308 | APPARATUS AND METHOD FOR LIGHTING DIELECTRIC BARRIER DISCHARGE LAMP - A pair of internal electrodes are disposed at both ends of a lamp. A first voltage including a positive DC voltage superimposed on a substantial rectangular waveform voltage is applied to one of the internal electrodes. A second voltage including a negative DC voltage superimposed on the substantial rectangular waveform voltage is applied to the other internal electrode. The dark portion occurring substantially at the center in the longitudinal direction of the lamp becomes invisible, so that the brightness distribution is improved. | 2009-03-05 |
20090058309 | FIELD EMISSION DEVICE - Disclosed is a field emission device. The field emission device includes: an anode substrate including an anode electrode formed on a surface thereof and a fluorescent layer formed on the anode electrode; a cathode substrate disposed opposite to and spaced apart from the anode substrate, and including at least one cathode electrode formed toward the anode substrate and a field emitter formed on each cathode electrode; and a gate substrate having one surface in contact with the cathode substrate, wherein the gate substrate include gate insulators surrounding the field emitters and having a plurality of openings exposing the field emitters, and a plurality of gate electrodes formed on the gate insulators around the openings and electrically isolated from one another. Thus, when the trajectories of the electron beams emitted from the emitters are rapidly changed over time by a voltage difference between the gate electrodes, an electron beam-scanned area can be expanded due to residual images and the electron beam can be more uniformly emitted due to an electron beam scattering effect and a linear beam spreading effect, resulting in improved emission uniformity of the fluorescent layer. | 2009-03-05 |
20090058310 | PLASMA DISPLAY PANEL DRIVE CIRCUIT AND PLASMA DISPLAY APPARATUS - A drive circuit for driving a plasma display panel (PDP) includes a pulse voltage generation circuit ( | 2009-03-05 |
20090058311 | DC-DC converter and organic light emitting display using the same - A DC-DC converter and an organic light emitting display comprising: a voltage generator receiving an input voltage through an input terminal to selectively generate a first voltage and a second voltage, outputting the first voltage and the second voltage through first and second output terminals, a capacitor coupled to the output terminal; and a switch unit discharging voltage stored in the capacitor according to the control signal. | 2009-03-05 |
20090058312 | ENERGY EFFICIENT FLUORESCENT LAMP - To decrease a power consumption of a fluorescent lamp, the fluorescent lamp is provided with a high efficiency fluorescent coating, generating more light upon receipt of a conventional amount of radiation. Decreasing the power supplied to the lamp decreases the radiation supplied to the fluorescent coating and thus the light output of the lamp. Due to the increased light output of the fluorescent coating, the light output level of the fluorescent lamp may be kept substantially equal to a light output level of a conventional lamp. | 2009-03-05 |
20090058313 | POWER SUPPLY FOR SUPPLYING POWER TO A LAMP - A power supply for supplying power to a lamp with functions of dimming, over-current protection, over-voltage protection, arcing protection, and low-temperature start-up is provided. When frequency of the output current exceeds a predetermined value, the power supply is turned off to accomplish a dimming goal and extend lifetime of the lamp. When abnormal statuses such as open-circuited status, short-circuited status, or arcing status occur, a surge current induced by the abnormal statuses may be eliminated to prevent the power supply from being damaged. A high-frequency current detection circuit is configured to detect whether a current supplied to the high-voltage load is a high-frequency current to prevent damage to the electronic elements in the high-voltage load. A current adjusting circuit is configured to adjust an alternating current outputted to a lamp set in response to an environment temperature to supply an adequate alternating current at a low temperature for starting the lamp set. | 2009-03-05 |
20090058314 | Device and Method for Operating a High-Pressure Discharge Lamp - The invention relates to a device for operating a high-pressure gas discharge lamp (Lp), which is provided with a starting auxiliary electrode (ZE), with a current of alternating polarity. The device comprises a series resonance circuit (L | 2009-03-05 |
20090058315 | Control module - An electric light control module comprising: a first interface for connection to a power supply unit; a second interface for connection to a light source unit; a programmable control circuit operable to store a predetermined sequence of two or more instructions, each instruction including one or more individually programmable parameters, and to control the transmission of electrical signals between the first interface and the second interface in accordance with the predetermined sequence thereby controlling the operation of a light source connectable to the second interface, and one or more user input devices capable of manual activation connected to the control circuit to alter at least one of the one or more individually programmable parameters. | 2009-03-05 |
20090058316 | Magnetic ballast - Magnetic ballast comprising a covered fairing, case or base with cover, basically rectangular, without limitation to the effects of the present patent, constituted by a ballast or a magnetic reactance (B), a compensating capacitor (C), and both ballast and compensating capacitor are put inside a covered fairing, case or base, forming the same piece, of suitable metallic or plastic material as epoxy resin, polyester or the like. It is important to point out that such material or shape to be used on fairing or case is non-limiting. | 2009-03-05 |
20090058317 | LIGHT-EMITTING DIODE LIGHT SOURCE AND LIGHT-EMITTING DIODE LAMP - A light-emitting diode (LED) light source suitable for being electrically connected with a power line is provided. The LED light source includes an LED array, a power line communication (PLC) unit and a current control unit. The PLC unit is electrically connected with the power line, and the current control unit is electrically connected with the LED array and the PLC unit. | 2009-03-05 |
20090058318 | Driving Device for Providing Light Dimming Control of Light-Emitting Element - A driving device includes a first switch element to switch between applying or not applying to a light-emitting element a voltage directed to setting the light-emitting element in an ON state, and a constant current control circuit to adjust a current flowing through the light-emitting element when the light-emitting element is in an ON state to a predetermined current value. | 2009-03-05 |
20090058319 | ELECTRON SOURCE AND METHOD FOR THE OPERATION THEREOF - An electron source has an electron emitter with an electron emission cathode, a high voltage unit provided for power supply of the electron emission cathode, and a low voltage unit provided to control the high voltage unit. Data are transmitted non-electrically (in particular optically) between the high voltage unit and the low voltage unit. | 2009-03-05 |
20090058320 | SYSTEM AND METHOD FOR CONTROLLING LIGHTING PATTERNS OF AN LED - A computer-based method for controlling lighting patterns of an LED is disclosed. The method includes the steps of: adding LED data to a computer, the LED data includes a lighting pattern of the LED; sending a command to an LED controller connected to the LED, the command is a control command or a writing command, the writing command includes LED data that can be read by the computer; updating LED data stored in the LED controller with the LED data included in the writing command if the command is the writing command, and controlling the lighting pattern of the LED according to the updated LED data; reading LED data from the LED controller directly if the command is the control command, and controlling the LED to turn on or turn off according to the LED data read from the LED controller. A related system is also disclosed. | 2009-03-05 |
20090058321 | LAMP DRIVING APPARATUS AND CONTROL METHOD THEREOF - A lamp driving apparatus configured to drive a plurality of types of lamps, each of the plurality of lamps is attached with lamp identification information for uniquely identifying the lamp. The lamp driving apparatus includes: a lamp power supply configured to drive the lamp; a read circuit configured to read the lamp identification information from the lamp; and a control circuit configured to control the lamp power supply on the basis of a result of identification obtained by use of the read lamp identification information. The control circuit, if the lamp is found to be authorized, makes the lamp power supply drive the lamp. | 2009-03-05 |
20090058322 | ADAPTIVE CONTROL APPARATUS AND METHOD FOR A SOLID STATE LIGHTING SYSTEM - The present invention provides a method and apparatus for adaptive control of a solid-state lighting system consisting of one or more groups of one or more light-emitting elements The invention comprises a voltage control device to provide each group with an independently controllable voltage A feedback system to detect and generate a signal representative of drive currents through the one or more groups A computing device then adaptively evaluates, based on the signal, a required voltage that achieves a desired respective drive current in each of the one or more groups. | 2009-03-05 |
20090058323 | Flyback LED drive circuit with constant current regulation - A flyback LED drive circuit for the plurality of LEDs is provided. An inductive device is coupled to an input voltage. A power transistor is connected to the inductive device in series to control the switching current of the inductive device. The energy is stored into the inductive device when the power transistor is turned on. The stored energy is delivered to the plurality of LEDs via a flyback diode when the power transistor is turned off. A control circuit is utilized to detect the switching current of the inductive device for generating a switching signal to provide a constant current to the plurality of LEDs. | 2009-03-05 |
20090058324 | PRECHARGE CONTROLLING METHOD AND DISPLAY DEVICE USING THE SAME - An embodiment of the invention provides a precharge controlling method, including the steps of: providing a voltage generating circuit with an output circuit for outputting a voltage having a necessary level, and a comparator; judging an output voltage from the output circuit in the comparator during a precharge time period, and feeding back an output signal from the comparator to the output circuit; and controlling a precharge voltage until the voltage having the necessary level outputted from the output circuit is reached. | 2009-03-05 |
20090058325 | GROUP CONTROL TYPE FLUORESCENT, LED AND/OR HALIDE LIGHTING CONTROL SYSTEM - A group control type fluorescent, LED and/or halide lighting control system comprises at least a control interface, which generates a main control signal based on user's operation. This control interface is connected to one or more controllable driver to drive corresponding light sources according to the main control signal. The controllable drivers are cascaded to one or more drivers in order. These drivers control the connected light sources to produce corresponding actions according to control signals generated by the controllable drivers. Through a cascading design collocated with several controllable dimmable drivers, unlimited installation and immediate usage after installation can be accomplished without the need of any preset action. Moreover, the advantages of simple operation and easy learning can also be achieved. | 2009-03-05 |
20090058326 | Hybrid vehicle and method of controlling the same - A hybrid automobile, wherein a second power source operated with less frequency can be forcibly operated. The hybrid automobile comprises a storage battery as a first power source. The hybrid automobile further comprises an engine and a motor generator or a fuel cell as the second power source. When the hybrid automobile is run by the first power source, a driver can change over an operation mode to a running by the second power source by operating an input device. The hybrid automobile further comprises a notification means for prompting the driver to operate the input device when the non-operating time of the second power source exceeds a predetermined time or longer. Furthermore, the hybrid automobile comprise a control means which, when the remaining amount of energy of the second power source is less than a predetermined amount, stops the changeover of the operation mode from a running by the first power source to the running by the second power source. | 2009-03-05 |
20090058327 | PUMPING DRIVER FOR LINEAR MOTOR WITH CONSTANT BATTERY POWER/CURRENT - A pumping driver for a linear motor, which includes a DC/DC converter that performs the function of constant power pumping or constant input current pumping of a battery to a linear motor. | 2009-03-05 |
20090058328 | Motor Driving Circuit - A motor driving circuit for controlling a current amount flowing through a motor coil includes: a comparator configured to output a comparison signal indicating a comparison result between a set current amount and a current amount based on an inputted set current signal according to the set current amount and a current signal according to the current amount flowing through the motor coil; a current control signal update circuit configured to update a current control signal for controlling the current amount flowing through the motor coil in a stepwise manner so that the current amount flowing through the motor coil is changed to the set current amount in a stepwise manner, based on the comparison signal outputted from the comparator; and a driving circuit configured to drive the motor coil based on the current control signal outputted from the current control signal update circuit. | 2009-03-05 |
20090058329 | Power Supply System and Vehicle - A maximum value selection unit ( | 2009-03-05 |
20090058330 | DRIVING A MULTI-PHASED MOTOR - Motor control circuitry reduces the amount of driving voltage profile data stored in a profile datastore to completely rotate the phased motor. The stored driving voltage profile data defines driving voltages samples applied during a limited portion of the electrical period required to completely rotate the phased motor. For example, in one implementation, only one-sixth of the electrical period is defined and stored in a profile datastore. The driving voltage samples for another three-sixths of the electrical period are derived from this one-sixth profile (e.g., reversing, inverted, reversed and inverted), and the driving voltage samples for another two-sixths of the electrical period are based on saturated levels at the power supply voltage and a neutral voltage (e.g., ground). The described motor control circuitry can also provide improved torque at low power supply levels, particularly when saturated portions of the driving voltage profile exceed sixty degrees. | 2009-03-05 |
20090058331 | Semiconductor Power Converter - A semiconductor power converter includes a power converter for converting direct current to three-phase alternating current or vice versa; a means for detecting a current in an alternating current side of the power converter; a means for providing a current reference in the alternating current side of the power converter; a current controller for calculating a voltage reference in the alternating current side of the power converter to match the current reference and a value of the detected current; and a pulse width modulation means for controlling the power converter through pulse width modulation based on the voltage reference, wherein the current reference is used in place of the value of the detected current for at least one phase current among three phase currents in the alternating current side. | 2009-03-05 |
20090058332 | LOCK DETECTION METHOD AND LOCK DETECTION CIRCUIT FOR MOTOR FOR POWER-FOLDING MIRROR - The present invention is intended to, when rotation of a mirror rotation unit in a power-folding mirror is mechanically locked and its drive motor is thereby locked, make it possible to correctly detect this locked state. A motor | 2009-03-05 |
20090058333 | ELEVATING MACHINE CONTROL APPARATUS - An elevating machine control apparatus controls an inverter ( | 2009-03-05 |
20090058334 | Current Detector Unit And Motor Control Device - A current detector unit has a current detecting portion detecting a current flowing between a three-phase inverter and a direct-current power supply as a detection current; a three-phase current detecting portion for detecting a three-phase current of the inverter based on the detection current; and a judging portion judging, based on the detection current, whether or not a target time point belongs to a period during which the three-phase current can be detected. If the judging portion judges that the target time point belongs to the period, the three-phase current detecting portion detects the three-phase current. | 2009-03-05 |
20090058335 | CONTROL SYSTEM FOR BEARINGLESS MOTOR-GENERATOR - A control system for an electromagnetic rotary drive for bearingless motor-generators comprises a winding configuration comprising a plurality of individual pole pairs through which phase current flows, each phase current producing both a lateral force and a torque. A motor-generator comprises a stator, a rotor supported for movement relative to the stator, and a control system. The motor-generator comprises a winding configuration supported by the stator. The winding configuration comprises at least three pole pairs through which phase current flows resulting in three three-phase systems. Each phase system has a first rotor reference frame axis current that produces a levitating force with no average torque and a second rotor reference frame axis current that produces torque. | 2009-03-05 |
20090058336 | MOTOR DRIVING DEVICE - An object of the present invention is to provide a motor driving device capable of outputting an accurate rotation signal while preventing a false detection of B-EMF in a position detecting comparator. The motor driving device includes an output circuit, filter circuit, comparison circuit, current zero ampere detecting circuit, position detecting circuit, sensorless drive arithmetic operation circuit, noise reduction current waveform generating circuit, signal synthesizing circuit, and output transistor control circuit, the comparison circuit including a comparator, polarity switching portion connected to a +terminal and −terminal of the comparator and signal switching portion, the comparator being structured to be able to set and release an offset having a predetermined voltage value set preliminarily. | 2009-03-05 |
20090058337 | CONTROL DEVICE AND CONTROL METHOD OF BOOST CONVERTER - A control device of a boost converter which includes: an inverter circuit which controls switching to apply current to a stator winding of respective phases of a multi-phase brushless DC motor; and a boost circuit which is provided on an input side of the inverter circuit and has at least a reactor and a switching element, and controls ON and OFF states of the switching element of the boost circuit on the basis of a boost voltage command which is a command for boost voltage output from the boost circuit, the control device is provided with a boost voltage command setting unit which sets the boost voltage command on the basis of counter electromotive voltage of the brushless DC motor and a torque command for the brushless DC motor. | 2009-03-05 |
20090058338 | DRIVING CIRCUIT FOR MOTOR AND DEVICE EQUIPPED WITH DRIVING CIRCUIT - The circuit structured to drive a motor is provided. The circuit includes: a division signal generator that generates a division signal dividing each of a high level period and a low level period of a binary position signal representing a relative position of a magnetic coil to a permanent magnet into a preset number of multiple divisions; a pulse width setter that sets a pulse width for PWM control corresponding to each of the multiple divisions represented by the division signal; and a PWM signal generator that performs PWM control with the set pulse width, thereby generating a PWM signal as a driving signal for driving the motor. | 2009-03-05 |
20090058339 | ELECTRIC MOTOR DRIVE APPARATUS, HYBRID VEHICLE WITH THE SAME AND STOP CONTROL METHOD OF ELECTRIC POWER CONVERTING DEVICE - An ECU activates a shutdown permission signal and provides it to an AND gate when a shutdown signal is inactive. Thus, when an abnormality sensing device does not sense an abnormality, the ECU always keeps the shutdown permission signal active. The AND gate performs logical AND between a signal provided from the abnormality sensing device and the shutdown permission signal to provide the shutdown signal to inverters. When a limp-home run permission signal becomes active while the shutdown signal is active, the ECU inactivates the shutdown permission signal. | 2009-03-05 |
20090058340 | Closure panel control apparatus - A controller computes a pinching amount of an object caused by a window glass. The controller estimates a prior pinching amount of the object caused by the window glass before the controller computes the pinching amount of the object. The controller confirms occurrence of the pinching of the object based on the computed pinching amount and the estimated prior pinching amount of the object. | 2009-03-05 |
20090058341 | Control method and system with feedback indicative of load flux - Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switch the solid-state switch so that the solid-state switch is conductive during a conduction angle of a cycle of an incoming AC power waveform conveyed by the phase path, calculate the conduction angle based on a generally sinusoidal reference value that has a frequency lower than a frequency of the incoming AC power waveform, and adjust the generally sinusoidal reference value based on a value indicative of flux in a load coupled to the phase path. | 2009-03-05 |
20090058342 | ROBOT CONTROLLER HAVING STOPPAGE MONITORING FUNCTION - A robot controller having a stoppage monitoring function, by which safety of an operator is ensured without using hardware or the like for allowing/stopping the power transmission to each of a robot and a cooperating device. A CPU of the robot controller periodically monitors the position of the robot or the cooperating device based on positional information from each servomotor and the state of entering information regarding the robot or the cooperating device. Then, when entering information is initially input, the position of the servomotor of the robot or the cooperating device, to which the entering information is applied, is stored in RAM. After that, while the entering information is being input, the distance between the position stored in RAM and the current position of the servomotor is calculated. If the calculated distance is larger than an allowable moving distance, the CPU sends a command to an emergency stopping part in order to cut-off power to all servomotors of the robot and the cooperating device. | 2009-03-05 |
20090058343 | APPARATUS FOR OPERATING A MACHINE - An apparatus for operating a machine having electric axes includes a power module for supplying axis drives with electrical energy, an axis regulating module for regulating parameters of the axis drives, and an axis control module for controlling axis drives among one another. The modules are all interconnected with one another and located inside the apparatus as integral components of the apparatus. Synchronization is established between the functions of the modules, so that related courses of motion of a machine that is to be triggered are executed as precisely as possible. | 2009-03-05 |
20090058344 | VALVE TIMING ADJUSTING APPARATUS CAPABLE OF RELIABLY PREVENTING HEAT DAMAGE OF SWITCHING ELEMENTS - A valve timing adjusting apparatus adjusts valve timing of at least one of intake and exhaust valves of an engine that are opened and closed by a camshaft driven by torque transmitted from a crankshaft. The apparatus includes an electric motor, a plurality of switching elements, a motor driver, and a phase adjusting mechanism. When a target rotational direction of a motor shaft of the electric motor is coincident with the actual rotational direction of the same, the motor driver continuously turns on a selected one of the switching elements for the whole of a predetermined rotation angle range of the motor shaft. When the target rotational direction is opposite to the actual rotational direction, the motor driver continuously turns on the selected switching element only for part of the rotation angle range, and continuously turns off the selected switching element for the remaining part of the rotation angle range. | 2009-03-05 |
20090058345 | MOTOR CONTROLLER PROVIDING POSITION FEEDBACK CORRECTION - A motor controller employs absolute encoder signals to periodically assess the existence of cumulative error in a position signal derived from an incremental encoder signal. In one embodiment the absolute encoder signals are extracted from commutation switches of the motor eliminating the need for a separate absolute encoder. | 2009-03-05 |
20090058346 | ELECTRIC MOTOR CONTROL APPARATUS - In order to simultaneously realize an improvement in disturbance suppression force of an electric motor control apparatus and vibration suppression of a load machine, a velocity control circuit receives a velocity command signal as a target value of velocity of an electric motor and a corrected velocity signal, obtained by correcting a velocity signal with a velocity correction signal, and outputs a torque command signal specifying target torque of the electric motor driving the load machine. A vibration suppression circuit outputs a velocity correction signal, based on an acceleration signal, indicating acceleration of the load machine. A transfer function from the acceleration signal to the torque command signal is obtained by multiplying a transfer function from a position signal, indicating position of the electric motor to the torque command signal, by a proportion characteristic having a specified gain and integration characteristic. | 2009-03-05 |
20090058347 | Motor Drive System And Method For Predicting Position During Power Interruption - A powered apparatus includes a driven component that is movable along a path and a drive motor that moves the driven component along the path. A motor speed detector monitors an instantaneous speed of the drive motor at each position along the path. An electronic control unit operates the drive motor and includes load profile data representing a number of motor loads associated with respective positions of the driven component along the path. A calculating component determines a calculated final rest position of the driven component by adding a current position of the driven component along the path and an adjustment coefficient representing an additional distance of travel along the path based on the instantaneous speed of the drive motor and a respective motor load associated with the additional distance of travel. A non-volatile memory component stores the calculated final rest position of the driven component. | 2009-03-05 |
20090058348 | MOTOR DRIVE CONTROL DEVICE AND IMAGE FORMING APPARATUS - A motor drive control device for controlling a rotational speed of a motor includes: a motor driver for rotationally driving a motor; a correction amount calculating section for detecting a rotational speed of an output of the motor in accordance with an alternate current signal outputted from an FG sensor and detecting a rotational position of a photoconductive drum, which is rotated by a rotational drive force of the motor, in accordance with a pulse outputted from an encoder; a speed controller for generating a speed control signal corresponding to a total correction amount, which is a sum of a correction amount calculated in the correction amount calculating section based on a rotational speed of the motor and a correction amount calculated based on a rotational position of the photoconductive drum, and outputting the generated speed control signal to the motor driver. | 2009-03-05 |
20090058349 | ANGLE-CALCULATION APPARATUS AND ANGLE-CALCULATION METHOD FOR THREE-PHASE OPTICAL ENCODER - An angle-calculation apparatus for three-phase optical encoder receives three-phase sinusoidal signals 120 degree phase from the optical encoder and obtains angle information for a motor rotor. The angle-calculation apparatus includes an A/D converter, a digital signal processor (DSP), a phase digitalizer and a digital counter. The A/D converter converts three-phase analog signals of the optical encoder into three-phase digital signals. The phase digitalizer converts the three-phase analog signals into digital phase signals. The digital counter generates a counting value based on the digital phase signals. The DSP performs an inverse trigonometric function calculation on a relatively linear region of the three-phase digital signals to obtain the angle information. The DSP obtains the rotation turn number and rotation direction of the motor rotor according to the counting value. | 2009-03-05 |
20090058350 | JUNCTION TEMPERATURE REDUCTION FOR THREE PHASE INVERTERS MODULES - Provided is a motor controller and method of controlling a motor with an improved maximum junction temperature rating. In accordance with one aspect of the present invention, a motor is controlled by varying a common mode voltage duty ratio for a plurality of solid state switching devices in a power inverter, generating drive signals for the solid state switching devices based at least in part upon the common mode voltage duty ratio, and changing states of the solid state switching devices based upon the drive signals. | 2009-03-05 |
20090058351 | Control method and system - Systems, methods, and devices are disclosed, including an induction-motor controller that has a motor controller configured to receive alternating current (AC) power with a voltage that varies generally sinusoidally and transmit the AC power during a conduction angle of a cycle of the AC power. In some embodiments, the conduction angle varies generally sinusoidally at a lower frequency than the AC power, and the motor controller may be configured to not transmit the AC power outside of the conduction angle. | 2009-03-05 |
20090058352 | Cold storage device capable of collecting solar power - A cold storage device includes a rechargeable battery set disposed in an inner receiving space in a case body, a thermoelectric cooling unit mounted in the case body and connected electrically to the rechargeable battery set for cooling a cold storage space in the case body, a charging mode selecting unit operable so as to select one of electrical energy converted from solar power by a solar power collecting plate, DC power from an external DC power source, and DC power obtained by converting AC power from an external AC power source to charge the rechargeable battery set, and a power output selecting unit operable so as to output one of the electrical power from the rechargeable battery set and AC power obtained by converting the electrical power from the rechargeable battery set at a corresponding one of AC and DC output ports. | 2009-03-05 |
20090058353 | APPARATUS AND METHOD FOR CHARGING BATTERY USING SOLAR CELL - A charging apparatus and method for charging a battery of a mobile terminal using a thin film printed solar cell. The apparatus has an outer case including electrochromic elements and a thin film printed solar cell. A control unit controls charging of the battery so that a color of the electrochromic elements is changed into a transparent color and sunlight is transmitted to the thin film printed solar cell disposed under the electrochromic elements. Also, the control unit controls charging of the battery such that a color of the outer case is automatically changed into a transparent color so that sunlight is transmitted to the thin film printed solar cell. Also, the color of the electrochromic elements can be changed according to the user's request so that the color of the outer case is changed into a desired color. | 2009-03-05 |
20090058354 | SOLAR-POWERED MEDIA SYSTEM AND APPARATUS - Solar-powered media systems and apparatuses are disclosed. The solar-powered media systems and apparatuses comprise shade structures, solar cells, energy storage devices, electronics and/or circuitry, docking stations, wireless communications devices, and audio and/or visual components capable of outputting media content. One aspect of the solar-powered media system and apparatus pertains to shade structures, which provide shade for one or more users. Another aspect of the disclosure pertains to energy storage devices, which store electrical energy to power the solar-powered media system. Another aspect of the disclosure pertains to docking stations, which allow communication and electrical energy transfer between various devices. Another aspect of the disclosure pertains to audio & visual components capable of outputting media content for one or more users. Another aspect of the disclosure pertains to solar cells integrated into or attached to the said shade structure. All aspects can be utilized alone or in combination with one another. | 2009-03-05 |
20090058355 | ELECTRIC VEHICLE BATTERY MODULE AND REPLACEMENT SYSTEM - An apparatus and method is disclosed for the housing, removal, recharging, and replacing of electric vehicle batteries. The apparatus includes a modular battery carriage and a vehicular battery carriage compartment allowing replacement of electric vehicle batteries to suit the needs of the operator at the service station and an automated service station for the rapid replacement of discharged batteries in electric vehicles with replenished batteries. | 2009-03-05 |
20090058356 | MULTI-CHARGING DEVICE AND METHOD - Provided is a multi-charging device and method by which a plurality of portable-device batteries can be charged simultaneously. The multi-charging device includes charging terminal connector including a socket to receive power from an external source and a plurality of charging terminals. Each charging terminal is connected with the charging terminal connector, and the charging terminals deliver the power from the socket of the charging terminal connector to a portable device connected therewith. | 2009-03-05 |
20090058357 | Battery Charging Unit - An arrangement for charging a battery provided on a trolley, for example a battery used to run a display units, alarms or calls for assistance provided on shopping or supermarket trolleys, the arrangement comprising a charging station having guide rail with a channel, at least two contacts such as brush strips being disposed within the channel, the contacts being arranged to electrically interact with at least two contact areas provided on a part of the trolley, such as a handle, which is insertable into the channel. | 2009-03-05 |
20090058358 | POWER RECEIVING DEVICE, AND ELECTRONIC APPARATUS AND NON-CONTACT CHARGER USING THE SAME - Disclosed is an electronic apparatus ( | 2009-03-05 |
20090058359 | Multifunction Charger System and Method - An adapter for providing a source of power to a mobile device through an industry standard port is provided. In accordance with one aspect of the invention, the adapter comprises a plug unit, a power converter, a primary connector, and an identification subsystem. The plug unit is operative to couple the adapter to a power socket and operative to receive energy from the power socket. The power converter is electrically coupled to the plug unit and is operable to regulate the received energy from the power socket and to output a power requirement to the mobile device. The primary connector is electrically coupled to the power converter and is operative to couple to the mobile device and to deliver the outputted power requirement to the mobile device. The identification subsystem is electrically coupled to the primary connector and is operative to provide an identification signal. | 2009-03-05 |
20090058360 | SELF-CHARGING PORTABLE ELECTRONIC DEVICE - A self-charging portable electronic device ( | 2009-03-05 |
20090058361 | Systems and Methods for Wireless Power - The present invention is a wireless power system which includes components which can be recharged by harvesting wireless power, wireless power transmitters for transmitting the power, and devices which are powered from the components. Features such as temperature monitoring, tiered network protocols including both data and power communication, and power management strategies related to both charging and non-charging operations, are used to improve performance of the wireless network. Rechargeable batteries which are configured to be recharged using wireless power have unique components specifically tailored for recharging operations rather than for providing power to a device. A wireless power supply for powering implanted devices benefits from an external patient controller which contains features for adjusting both power transmission and harvesting provided by other components of the wireless power network. | 2009-03-05 |
20090058362 | PROTECTION CIRCUIT FOR BATTERY PACK AND BATTERY PACK HAVING THE SAME - A protection circuit for a battery pack is provided in which a positive temperature coefficient device is electrically connected in a current path of the battery pack to control current flowing through the current path in response to an internal temperature of the battery pack. The protection circuit for a battery pack includes a charging and discharging control unit located on a current path of the battery pack. A first protection circuit controls the charging and discharging control unit in response to a charged state of the battery pack. A second protection circuit prevents overcurrent from flowing through the current path of the battery pack. A positive temperature coefficient is electrically connected in the current path of the battery pack. The battery pack may include a bare cell or battery group including one or more secondary batteries. | 2009-03-05 |
20090058363 | BATTERY CHARGE CONTROL CIRCUIT - A DC-DC voltage down-converter for an electronic device supplied by a battery and having a bus interface for the interconnection with another electronic device capable of supplying electric power is provided. The DC-DC voltage down-converter includes a terminal coupled to a voltage supply line of the bus interface and operable to receive a input current from the another electronic device. The DC-DC voltage down-converter further includes an electric energy storage element coupled between the battery and the terminal, the electric energy storage element being operable to storage/release electric energy and a drive circuit arranged to control the storage/release of the electric energy storage element, so as to cause an electric power generated by the input current supplied by the another electronic device through the voltage supply line to re-charge the battery. The DC-DC voltage down-converter still further includes a input current feedback control circuit coupled to the terminal and arranged to monitor a value of the input current and generate a corresponding input current indication; the drive circuit configured to control the storage/release of the electric energy storage element according to the input current indication. | 2009-03-05 |
20090058364 | Electric power supply control system for vehicle - An electric power supply control system has a battery, a vehicular alternator, large electric power systems, operation limitation target systems, and a battery condition management device. Each large electric power system generates a rush current when initiating its operation by electric power supplied. Each operation limitation target system is capable of limiting its operation for a demand during the operation of the large electric power systems. The large electric power systems and the operation limitation target systems change their operation conditions based on an allowable electric power (or an allowable electric current) supplied from the battery condition management device in order to maintain a terminal voltage of the battery which is not less than a limitation voltage. | 2009-03-05 |
20090058365 | Secondary battery protection semiconductor device - A disclosed secondary battery protection semiconductor device protects the secondary battery by detecting values of at least plural detection items corresponding to the secondary battery including the detection items of overcharge, overdischarge, charge overcurrent, discharge overcurrent, short-circuit current, and overheat; comparing the detected values with corresponding detection levels that are determined beforehand for each of the detection items; and based on the comparison results, turning on/off a discharge control transistor and a charge control transistor that are series-connected to the secondary battery. Among the plural detection items, a first value of a first detection item is detected, and a detection level of a second detection item is changed in accordance with the first value. | 2009-03-05 |
20090058366 | BATTERY CHARGING AND DISCHARGING CONTROL APPARATUS - A battery charging-discharging control apparatus includes an estimation circuit, a detection circuit, and a control circuit. The estimation circuit estimates an internal resistance of a battery. The detection circuit detects a charging-discharging current of the battery. The control circuit predicts a behavior of a voltage of the battery based on behaviors of the internal resistance and the charging-discharging current of the battery. The control circuit limits the charging-discharging current or a charging-discharging power of the battery based on the predicted behavior of the battery voltage in such a manner that the battery voltage is within a predetermined voltage range. | 2009-03-05 |
20090058367 | ADAPTIVE BATTERY ESTIMATOR AND METHOD - An adaptive battery estimation control system includes a fixed and adaptive battery estimators effective for a battery parameter estimations across a wide range of dynamic battery operational conditions. | 2009-03-05 |
20090058368 | SYSTEM AND METHOD FOR RE-INITIATING CHARGE CYCLE FOR BATTERY PACK LEFT IN A CHARGER - A system and method is provided for initiating a charge cycle for a battery pack left in a battery charger. The battery pack includes a battery control unit which is operable to place the battery pack in a sleep mode after a predefined period of inactivity. The battery charger in turn is operable to deliver a charging signal to the battery pack in response to the battery pack entering a sleep mode. | 2009-03-05 |
20090058369 | BATTERY CHARGING CIRCUIT - The present invention provides a battery charging circuit to charge batteries in phases. In a first charging phase the charging circuit charges the batteries with a large current and at a second charging phase the charging circuit charges the batteries with a much smaller current. The charging circuit includes a current detection circuit which detects a charge current and provides a detection voltage proportional to the charge current. The battery charging circuit also includes an amplifier circuit to amplify the detection voltage and a comparison module compares the amplified detection voltage with a reference voltage. If the amplified detection voltage is lower than the reference voltage, the comparison module outputs a switch signal to a control module. The control module controls a charging module to charge the battery in a trickle mode when receiving the switch signal. | 2009-03-05 |
20090058370 | BATTERY PACK AND CHARGING METHOD - In a battery pack with battery charger, a circuit derives a relatively low constant current from the charge current of the battery charger, and this relatively low constant current is used to charge the battery pack when temperature is below a threshold. Otherwise, the charge current from the battery charger is used, at least up to a high temperature threshold. | 2009-03-05 |
20090058371 | AUXILIARY ELECTRIC POWER SUPPLY FOR VEHICLE AND CHARGER/DISCHARGER FOR VEHICLE - The auxiliary electric power supply for a vehicle has a first switch electrically connected to an I/O end; a capacitor bank; a discharge resistance; and a controller. The capacitor bank has series-connected electric double layer capacitors, and balanced resistances. Each of the balanced resistance is parallel-connected to each electric double layer capacitor, and has substantively the same resistance value. The capacitor bank and discharge resistance are connected to the first switch. The controller controls the first switch while monitoring the voltage of the capacitor bank and the operating state of the ignition key operating the ignition switch of the vehicle, so as to connect the capacitor bank to the discharge resistance when the ignition switch is turned off. | 2009-03-05 |
20090058372 | Voltage controller for vehicle using averaged status signal - In a voltage controller for a vehicle, voltage controlling means controls an output voltage of a power generator mounted on the vehicle and a terminal voltage of a battery connected to the power generator, by controlling of a field current passing through a field winding of the power generator. This control is performed by operating switching means connected to the field winding so that the switching means is conducted intermittently. Signal generating means generates a power generator state signal by measuring a state of the power generator at predetermined measurement periods. Signal averaging means performs an exponentially weighted averaging of the power generator state signal. The signal averaging means executes the averaging within a predetermined averaging period and updates the averaging at every predetermined measurement period. | 2009-03-05 |
20090058373 | GENERATOR CONTROL CIRCUIT - A generator control circuit is disclosed. One embodiment provides a first active switching circuit configured to connect a first terminal of an excitation coil either to a first or to a second terminal of a voltage source, a second active switching circuit configured to connect a second terminal of the excitation coil either to the first or to the second terminal of the voltage source, and a generator controller to set the duty cycle of the active switching circuit to rapidly control the current through the excitation coil to an excitation coil current setpoint. | 2009-03-05 |
20090058374 | HIGH EFFICIENCY ALTERNATOR - A high efficiency alternator capable of supplying extreme high power output with maximum dissipation of heat. Preferably, the alternator includes dual field coils mounted stationary around a common shaft and dual brushless rotors. The alternator may also include three or more phases, and uniquely wound stator assemblies. The alternator may also include dual, three-phase bridge-type rectifiers and dual voltage regulators. All electrical components are preferably redundant. Air cooling through the interior perimeter of the alternator is preferably provided to cool the housing. | 2009-03-05 |
20090058375 | SELF-OSCILLATING CONVERTER - A converter has a main feedback path and two auxiliary feedback paths from an output node to an auxiliary differential input pair of a comparator. The auxiliary feedback paths have different RC time constants so that a differential ramp signal is effectively applied to the auxiliary differential inputs of the comparator. The circuit design compensates for a negligibly small equivalent series resistor of an output capacitor so that modern capacitors may be used without compromising the stable oscillation of the converter. | 2009-03-05 |
20090058376 | EQUIPMENT CONTROL ARRANGEMENT SUITABLE FOR PROVIDING INFORMATION ABOUT AN OPERATING STATE OF THE EQUIPMENT - A control circuit is provided for controlling a vehicle component (e.g., an HVAC system). The control circuit includes a communication link that connects the equipment control module to the control assembly and communicates instructions from the control assembly to the equipment control module and performance characteristics from the vehicle component to the control assembly. | 2009-03-05 |
20090058377 | Constant voltage to constant current transferring controller - A constant voltage to constant current transferring controller includes a voltage signal transferring circuit, a current signal transferring circuit, and an error amplifier. The voltage signal transferring circuit receives a voltage detecting signal and a first reference voltage signal, and outputs a voltage signal transferring reference signal. The current signal transferring circuit receives a current detecting signal and a second reference voltage signal, and outputs a current signal transferring reference signal. The error amplifier receives the voltage signal transferring reference signal, the current signal transferring reference signal and a third reference voltage signal, and outputs an error amplifying signal. When the level of the voltage signal transferring reference signal is larger than the level of the current signal transferring reference signal, the error amplifier outputs the error amplifying signal according to the voltage signal transferring reference signal and the third reference voltage signal. | 2009-03-05 |
20090058378 | CIRCUIT SYSTEM AND METHOD FOR REDUCING AN IN-RUSH CURRENT - A circuit is provided including an output stage with a pair of transistors. Further provided is a control circuit in communication with the output stage. The control circuit is capable of controlling a duration in which at least one of the transistors is actuated for reducing an in-rush current. | 2009-03-05 |
20090058379 | Method and apparatus for equalizing phase currents in multiphase switching power converters - A method and apparatus for equalizing phase currents in multiphase switching power converters is described in which pairs of stored digital values that directly or indirectly control the values of the currents in the conversion phases are altered in equal and opposite increments. In one embodiment the digital values being controlled are the relative on-times of the power switches in pairs of conversion phase. The method is stepwise and repetitive in the sense that, instead of calculating or inferring offset values that seek to bring all of the currents in the phases toward equality, pairs of phase currents are altered repetitively and iteratively, using equal and opposite steps in the values of their respective control variables, until the phases are all sufficiently close in value. The steps may be of fixed size or the step size may be selectively modified to optimize the convergence time of the algorithm. | 2009-03-05 |
20090058380 | MULTIPLE OUTPUT AMPLIFIERS AND COMPARATORS - An amplifier/comparator includes a multitude of output stages all sharing the same input stage. One or more of the output stages are amplification stages and have compensated output signals. A number of other output stages are not compensated and provide comparison signals. Each uncompensated output stage is adapted to switch to a first state if it detects a first input signal as being greater than a second signal, and further to switch to a second state if it detects the first input signal as being smaller than the second signal. By varying the channel-width (W) to channel-length (L) ratio (W/L) of the transistors disposed in the output stages, the trip points of the comparators and/or the electrical characteristics of the amplifiers are selectively varied. | 2009-03-05 |
20090058381 | POWER SUPPLY STABILIZING CIRCUIT, AN ELECTRONIC DEVICE AND A TEST APPARATUS - There is provided a power supply stabilizing circuit provided in a chip of an electronic device. The power supply stabilizing circuit stabilizes a power supply voltage supplied to an operational circuit of the electronic device, and includes a current bypass section that supplies a bypass current from an auxiliary power supply interconnection to a main power supply interconnection, where the main power supply interconnection supplies the power supply voltage to the operational circuit, and the auxiliary power supply interconnection is different from the main power supply interconnection, and a current control section that varies an amount of the bypass current supplied by the current bypass section to the main power supply interconnection in accordance with a predetermined current variation pattern, under an external control, during an operation of the operational circuit. | 2009-03-05 |
20090058382 | Direct current stabilization power supply - A direct current stabilization power supply apparatus, comprising: an output control device which generates a voltage corresponding to a drive current given and outputs it as an output voltage; a direct current stabilization portion which gives the drive current to the output control device to equalize a comparison voltage corresponding to the output voltage with a predetermined reference voltage and makes the output control device generate a desired output voltage; and a drive current limitation portion which monitors the comparison voltage and lowers the drive current according to a drop in the comparison voltage, wherein, when the comparison voltage is equal to or lower than a predetermined threshold voltage, the drive current limitation portion carries out an operation to hold the drive current at a predetermined lower-limit current value, or an operation to clamp a lower-limit value of the comparison voltage at a predetermined voltage value. Accordingly, even if the output voltage becomes a negative voltage, it is possible to secure a suitable drive current. | 2009-03-05 |
20090058383 | Switching DC-DC converter with adaptive-minimum-on-time control and method of adaptively controlling minimum-on-time of a switching DC-DC converter - A power converter includes a power switch adapted to receive an input power from an external power source and to generate an output power, and an adaptive oscillator adapted to output an adaptive minimum-on signal of the power switch in response to a change in measured magnitude of at least one of the input power and the output power. | 2009-03-05 |
20090058384 | REFERENCE VOLTAGE GENERATING CIRCUIT AND TIMER CIRCUIT - A reference voltage generating circuit includes a constant current source circuit connected with a power supply voltage and configured to output a reference current to an output node based on the power supply voltage. A current-voltage converting circuit is connected the output node and generates a reference voltage to the output node based on the reference current. A first voltage adjusting circuit is connected with the output node and is configured to adjust dependence of the reference voltage on the power supply voltage in a positive direction. A second voltage adjusting circuit is connected with the output node and is configured to adjust dependence of the reference voltage on the power supply voltage in a negative direction. | 2009-03-05 |
20090058385 | Step-up DC-DC converter - A step-up DC-DC converter is disclosed that is capable of high efficiency power conversion under both a heavy load condition and a light load condition. The step-up DC-DC converter includes a direct current power source, an inductor, a first switching element, a second switching element, a smoothing capacitor, a driver controller for controlling switching ON or switching OFF the first switching element and the second switching element, and a control changing unit for changing a control operation of the driver controller according to a load current. According to an output from the control changing unit, the driver controller performs one of an operation of switching OFF the second switching element and an operation of switching ON or switching OFF the second switching element. | 2009-03-05 |
20090058386 | Green technologies: 7less microsystems - The green technology is the technology for the green society having the green safety. The green technology is not only save the resource and recycle the resource but also save the energy and recycling the energy. The core technology of the Green Technology is the 7Less Microsystems. The 7Less Microsystems are the Xtaless Clock Generator, the Resistorless Current Sensor, the Capacitorless Low Drop Voltage Regulator, the Inductorless Switch Mode Power Supply, and the Avalanche Diodeless True Random Noise Generator, the Sawless Low Noise Amplifier, and the Brakeless Hybrid Electrical Vehicle. The Gain-Boost-Q LC VCO is the fundamental technology of the Xtaless Clock Generator, Spurfree/Jitterless Frequency and Phase Lock Loop, multi-phase high-speed high frequency clock and the Sawless Low Noise Amplifier. The switch inductor is the fundamental technology of the high power efficiency of the Switch Mode Power Supply. The high efficiency converter technology is the fundamental of the high efficiency power amplifier. The residue energy is recycling in the system to save the power from the wasted dissipation. The high efficiency power amplifier is the fundamental technology of the high efficiency plasma light and the 4 | 2009-03-05 |
20090058387 | Maintaining a constant output voltage by sampling and holding a voltage across an auxiliary winding - A lower-cost and more precise control methodology of regulating the output voltage of a flyback converter from the primary side is provided, which works accurately in either continuous voltage mode (CCM) and discontinuous mode (DCM), and can be applied to most small, medium and high power applications such cell phone chargers, power management in desktop computers and networking equipment, and, generally, to a wide spectrum of power management applications. Two highly integrated semiconductor chips based on this control methodology are also described that require very few components to build a constant voltage flyback converter. | 2009-03-05 |
20090058388 | SWITCHING POWER SUPPLY DEVICE - This invention prevents undershoot, etc., occurring in the output during the transition from intermittent control mode to continuous control mode to hinder stability, responsiveness, and low power consumption. | 2009-03-05 |