45th week of 2011 patent applcation highlights part 18 |
Patent application number | Title | Published |
20110273117 | Reciprocating Electric Tool - The invention provides a reciprocating electric tool ( | 2011-11-10 |
20110273118 | Power Factor Correction Circuit - A power factor correction circuit has a semiconductor integrated circuit and at least one very low Rds(on) MOSFET. The circuit also includes a silicon carbide diode for zero reverse recovery current. | 2011-11-10 |
20110273119 | CONTROL DEVICE AND METHOD FOR CONTROLLING AN ELECTRONICALLY COMMUTATED MOTOR, AND MOTOR - The invention relates to a control device for controlling an electronically commutated motor. The control device comprises a control input for a rotor position signal and a control output for connection to field coils of the motor. The control device is designed to generate a load current for displacing a rotor of the motor depending on the rotor position signal and to output said load current via the control output. The control device comprises at least one semiconductor switch for switching the load current depending on a semiconductor control signal. The control device comprises at least one pulse generator including the at least one semiconductor switch, said pulse generator being designed to generate the load current in the form of a pulsed control signal for displacing the rotor. The control device is characterized by a delta sigma converter which is at least indirectly connected to the control input on the input side and which is designed to produce the semiconductor control signal in the form of a digital bit stream depending on the rotor position signal. | 2011-11-10 |
20110273120 | PWM CONTROL CIRCUIT AND PWM CONTROL METHOD - The PWM control circuit includes a polarity determination unit, a full wave rectification unit, an adjustment unit that generates an adjusted waveform signal by adjusting waveform of the full wave rectification signal, and a carrier signal generating unit that generates a fixed frequency carrier signal. The PWM control circuit further includes a comparator that generates an original PWM signal by comparing the adjusted waveform signal and the carrier signal, and a PWM waveform shaping unit that generates a first PWM signal for the positive polarity section and a second PWM signal for the negative polarity section, by shaping the original PWM signal according to the polarity signal. | 2011-11-10 |
20110273121 | Electric Machine Component Temperature Monitoring - Embodiments of the invention provide an electric machine module including a module housing. In some embodiments, the module housing can at least partially define a machine cavity into which an electric machine can be positioned. The electric machine can include a rotor assembly comprising a plurality of laminations and a least one magnet positioned substantially within the rotor assembly. In some embodiments, at least one temperature sensor can be operatively coupled to, and in thermal communication with, a portion of the rotor assembly. The temperature sensor can be configured to sense a temperature of the rotor assembly. In some embodiments, at least one transmitter can be in communication with the temperature sensor and can transmit a signal from the temperature sensor to a receiver. In some embodiments, the receiver can be coupled to the module housing and in communication with a controller. | 2011-11-10 |
20110273122 | MOTOR DRIVE DEVICE - A motor drive device has an inverter circuit, in which at least three sets of a pair of upper and lower arms including a semiconductor switching element on an upper arm and a lower arm is arranged, for supplying voltage to a motor based on ON/OFF operation of each semiconductor switching element by a PWM (Pulse Width Modulation) signal, an inverter drive unit for outputting the PWM signal to each semiconductor switching element of the inverter circuit, a fail safe circuit, arranged between the inverter circuit and the motor, including a semiconductor switching element for shielding the voltage supply from the inverter circuit to the motor for each phase, and a fail safe drive unit for outputting a signal for turning ON/OFF the semiconductor switching element of the fail safe circuit. | 2011-11-10 |
20110273123 | POWER SUPPLY SYSTEM AND METHOD FOR CONTROLLING A MECHANICALLY COMMUTATED ELECTRIC MOTOR - The invention relates to a method for providing a trigger signal in response to the commutation of a mechanically commutated electric motor ( | 2011-11-10 |
20110273124 | LOW COST BLENDER CONTROL PERMITTING LOW ACTUATION FORCE SWITCHES - A control circuit for a blender provides low-cost power conditioning through the use of a high resistance which provides temporary power for operation of low-voltage logic circuitry and low-voltage switches for a time sufficient to switch the motor on, and a lower resistance which provides sufficient power for maintaining the motor on state indefinitely as instructed by the low-voltage logic circuitry. Low average power dissipation is provided by powering the low-voltage logic circuitry and low-voltage switches using the high resistance in a standby mode and switching in the lower resistance only when the motor is activated. | 2011-11-10 |
20110273125 | CONTROLLER FOR AC ELECTRIC MOTOR AND ELECTRIC POWERED VEHICLE - An AC electric motor, an inverter and a controller are mounted on an electric powered vehicle. The controller includes a voltage deviation calculating unit, a modulation factor calculating unit, and a mode switching determination unit. The voltage deviation calculating unit calculates a voltage deviation between a first voltage command when the rectangular wave voltage control is executed and a second voltage command when pulse width modulation control is executed, by inputting a current deviation to a voltage equation of the AC electric motor. Modulation factor calculating unit calculates the modulation factor based on the first voltage command and the voltage deviation. The mode switching determination unit determines whether or not control mode of the AC electric motor from the rectangular wave voltage control to the pulse width modulation control is necessary, based on the modulation factor. | 2011-11-10 |
20110273126 | ROBOTIC DRIVE CONTROL - A robotic device includes an electric motor in which a drive control circuit includes a driver circuit for intermittently supplying the magnetic coils with a supply voltage VSUP; a switching signal generating circuit that generates a switching signal supplied to the driver circuit; and a voltage setter that supplies a supply voltage control value Ya to the switching signal generating circuit. By adjusting pulse width of the switching signals DRVA | 2011-11-10 |
20110273127 | VALVE CONTROL DEVICE - In opening/closing control for the valve mechanism to which the return torque is applied in an opening direction or a closing direction of the valve, provided are a position control system for outputting a q-axis current command based on a position deviation between a target position command directed to the brushless DC motor and the coarse present position of the motor obtained by using the position detection sensor of a pulse output type, and a current control system in which a virtual current feedback is built for outputting a phase voltage command without a current sensor based on the q-axis current command and the coarse present position of the motor obtained by using the position detection sensor of the pulse output type. | 2011-11-10 |
20110273128 | SYNCHRONOUS MOTOR AND SYSTEM FOR DRIVING SYNCHRONOUS MOTOR - Disclosed are a synchronous motor having reduced torque ripple while having a high torque and system for driving the synchronous motor. The synchronous motor comprises a rotor ( | 2011-11-10 |
20110273129 | Managing Renewable Power Generation - A power delivery rate from a renewable power source to a load is managed by determining, by processing circuitry, a change in a power generation rate, determining, by the processing circuitry, whether the change in the power generation rate exceeds a limit, and then, adjusting, by control circuitry, a power transfer rate to or from a power storage device, such that the adjusting is sufficient to prevent the power delivery rate from exceeding the limit. | 2011-11-10 |
20110273130 | APPARATUS AND METHOD FOR CHARGING AND DISCHARGING PHOTOVOLTAIC PCS INTEGRATED BATTERY - There are provided an apparatus and method for charging and discharging a photovoltaic PCS integrated battery applied to a system that includes a first DC/DC converter | 2011-11-10 |
20110273131 | FUEL CELL SYSTEM AND DRIVING METHOD THEREOF - A driving method of a fuel cell system, which includes a secondary battery and a fuel cell stack, is disclosed. The method includes detecting a state of charge (SOC) of the secondary battery, driving the fuel cell stack to an on-state whenever the SOC of the secondary battery is less than a predetermined first SOC, and driving the fuel cell stack to an off-state whenever the SOC of the secondary battery is greater than a predetermined second SOC. In this method, the fuel cell stack is driven at a fuel concentration having optimum efficiency, thereby increasing the fuel efficiency of the fuel cell system. | 2011-11-10 |
20110273132 | Rechargeable multipurpose smart power source - A rechargeable multipurpose power management system has a power management system that can include a plurality of power management units. The power management units sources can be individually activated and deactivated (I think there might be a confusion between power sources and the system. Everything is within one box itself (the image that I sent you). Each unit is a power management system that can be connected to a variety of INPUT power sources. Several power management units can be combined together to create a stack of them but each one can operated individually as well). and each one is configured to be coupled to a variety of inputs. A rechargeable battery is coupled to the (One rechargeable battery is attached to only one power management units). A charging controller provides regulated charging to the battery. A plurality of convertors are (do we need to specify here what kind of converters, like DC-DC converters) coupled to the battery and provide output voltages that are accessible individually. A plurality of sensing circuits sense external signals and provide selective activation or deactivation of the system. | 2011-11-10 |
20110273133 | SOLAR USB CHARGER - A solar USB charger for providing power to electrical devices from solar energy without the use of an internal battery comprising of at least one solar cell, an electronic circuit and a means to connect the device to the item than needs to be charged. | 2011-11-10 |
20110273134 | IMPELLER DEVICE AND AUTOMATIC-SWITCHING REGENERATIVE CHARGING SYSTEM BETWEEN KINETIC ENERGY AND WIND ENERGY - An impeller device and an automatic-switching regenerative charging system between kinetic energy and wind energy are disclosed. The charging system comprises an electric generator and an impeller device in an electric green vehicle. An input end of the impeller device is connected to a differential device or an output shaft of a transmission box connected with the differential device. An output end of the impeller device is connected to an input shaft of the electric generator. The impeller device comprises at least one toothed disk with meshing teeth or at least one drive pulley. By connecting or disconnecting the impeller device and the differential device or the transmission box that link to the differential device through the one-way clutch, the kinetic energy of the electric green vehicle or the wind energy produced by the movement of the electric green vehicle can be automatically switched to charge an accumulator cell. | 2011-11-10 |
20110273135 | GRID PLATE FOR LEAD ACID STORAGE BATTERY, PLATE, AND LEAD ACID STORAGE BATTERY PROVIDED WITH SAME PLATE - There is provided a method for operating a lead acid storage battery in order to compensate for fluctuations in the amount of power generated by a solar power generation apparatus, a wind power generation apparatus, or another natural energy power generation device, the lead acid storage battery being charged by a power generation device and discharged to a load. The state of charge of the lead acid storage battery is maintained in a range of 30 to 90% where the fully charged state of the lead acid storage battery is 100%; and the lead acid storage battery is charged and discharged while the battery voltage is kept in a specified range of 1.80 to 2.42 V per cell to extend the service life of the battery. A reference temperature of 25° C. is established, and when the ambient temperature has risen above or fallen below the reference temperature, the upper and lower limit values of a specified range are corrected within a range of −4 mV/° C. to −6 mV/° C. per cell according to the amount by which the temperature has increased or decreased so that a corrected voltage range is obtained. The storage battery is charged and discharged while the battery voltage is kept in the corrected voltage range, and the battery is operated. | 2011-11-10 |
20110273136 | ELECTRIC POWER CONVERTER - An electric power converter ( | 2011-11-10 |
20110273137 | PROTECTION CIRCUIT, BATTERY PACK AND CHARGING SYSTEM - A protection circuit having: a connecting terminal for receiving a voltage for charging a rechargeable battery; a switching element interposed between the connecting terminal and the rechargeable battery; a temperature fuse for blocking a conductive path between the connecting terminal and the switching element; a heater for melting the temperature fuse; a voltage detection unit for detecting a voltage relating to the conductive path; a first abnormality detection unit for detecting occurrence of a first abnormality that is pre-set as a recoverable abnormality; a second abnormality detection unit for detecting occurrence of a second abnormality that is pre-set as an abnormality on the basis of which the temperature fuse should be melted; a protection control unit for turning OFF the switching element when the first abnormality is detected by the first abnormality detection unit; and a heater control unit for executing a temperature fuse melting process of applying the voltage of the conductive path to the heater when the second abnormality is detected by the second abnormality detection unit and the voltage detected by the voltage detection unit is not less than a predetermined threshold voltage. | 2011-11-10 |
20110273138 | WIRELESS CHARGING SYSTEM - The present invention provides wireless power supply systems that wirelessly supply power to a remote device for rapidly charging a charge storage capacitor, which charges a battery with the power stored in the charge storage capacitor. This allows the remote device to be positioned near the inductive power supply for rapid charging of the charge storage capacitor and allows battery charging to continue even after the remote device is removed from the inductive power supply. | 2011-11-10 |
20110273139 | POWER CHARGING DEVICE FOR AN ELECTRIC VEHICLE - The invention relates to a power charging device ( | 2011-11-10 |
20110273140 | ENERGY STORAGE ASSEMBLY AND METHOD FOR OPERATING SUCH AN ASSEMBLY - The invention relates to an energy storage assembly, comprising a plurality of cells connected in series, wherein the series connection of cells is connected to a power output of the energy storage assembly and a control unit, wherein at least a part of the cells connected in series is connected to the power output and the control unit by way of potential-free controlled converter and control units connected in parallel, such that during the charging, discharging and recharging processes each of the cells is operated according to the individual performance characteristics of said cell by means of selective current drains by the converter and control units and a total current flowing at the power output of the energy storage assembly is formed by a base current flowing through the series connection of the cells and by additional currents, which are drained from the individual cells depending on the capacity of the cells. The invention allows for the interconnection of different cell types to form an energy storage assembly and for uniform charging or discharging thereof, thus facilitating optimal use of the energy stored and extending the total usage period. | 2011-11-10 |
20110273141 | HYBRID WORKING MACHINE AND ELECTRIC POWER ACCUMULATION CONTROLLER - A hybrid working machine includes a first electric motor performing a power running operation of being driven with supplied electric power and a regenerative operation of generating electric power; a first electric circuit controlling the output of the first electric motor; a battery supplying the first electric motor with the electric power and storing the regenerated electric power from the first electric motor; a charge and discharge circuit controlling the charging current and the discharge current of the battery; and a controller controlling the charge and discharge of the battery for driving the machine. The controller calculates a level representing a proportion by which the output of the battery is limited with respect to each of multiple conditions related to the output of the battery. The controller limits the charging current and the discharge current of the battery based on the calculated levels. | 2011-11-10 |
20110273142 | Parallel Boost Unity Power Factor High Power Battery Charger - A high power battery charger includes a full bridge DC/DC converter as its main converter following a low frequency diode rectifier bridge connected to the power grid and followed by a high frequency diode rectifier bridge to charge the battery. Because the battery negates charging voltage less than that of itself, the conduction angle of the charging current dramatically drops when the battery voltage increases. The small conduction angle of the charger raises peak current and lowers power factor. An active power factor correction circuit for a high power charger consists of a boost DC/DC converter placed in conjunction with the main full bridge DC/DC converter. The present invention is a new charger topology that alters the positioning and control of the power factor correction circuit, minimizing the impact of the required additional power factor correction booster on the high power charger's overall efficiency, cost, weight and size. | 2011-11-10 |
20110273143 | BIPOLAR OVERVOLTAGE BATTERY PULSER AND METHOD - A bipolar overvoltage battery pulser and method are provided that apply a positive pulse voltage and a negative pulse voltage alternately across the terminals of a battery. The object of the bipolar overvoltage battery pulser and method is to increase the cycle lifetime and capacity of storage batteries, such as lead acid batteries. The rise times for the leading edges of the positive pulses and for the trailing edges of the negative pulses are short compared to the ionic relaxation time in the electrochemical solution. Alternating between the positive and negative pulses gives each new pulse an equal starting condition without realizing any memory effect that otherwise may result if the last applied pulse was of the same polarity, which reduces the extent of overvoltage that may be applied to the battery and decrease the highest useable pulse cycling frequencies that could be achieved without experiencing pulse overlapping. The shape, type and timing of the pulses may be adjusted to create overvoltage pulses having high duration and amplitude. | 2011-11-10 |
20110273144 | UNIVERSAL SERIAL BUS (USB) CHARGING SYSTEM AND METHOD THEREOF - A USB charging system and the method thereof are disclosed. The USB charging system includes a hub device having a charging function module and a plurality of connection ports. The charging function module dynamically distributes the charging current to the connection ports based on power supply ability of a power unit for providing the charging current to at least one chargeable device wherein the charging current is greater than USB protocol current. | 2011-11-10 |
20110273145 | CHARGE CONTROL CIRCUIT - A challenge to be met by an aspect of the present invention is to provide a charge control circuit that prevents occurrence of a decrease in battery capacity even when a battery stays in a connection with an external power supply and that induces neither battery deterioration nor overcharge. A first switch ( | 2011-11-10 |
20110273147 | Electric Tap in a Voltage Regulator Circuit - In one aspect of the present invention, a voltage regulator circuit comprises at least one coil disposed around a rotor coupled to a first rectifier. The coil comprises an electric tap connected to a second rectifier. The first rectifier and second rectifier are coupled to each other with at least one switch. The second rectifier is connected to a common load and the first rectifier is connected to the load via the at least one switch. | 2011-11-10 |
20110273148 | OUTPUT CONTROL DEVICE FOR HYBRID ENGINE-DRIVEN POWER GENERATOR - A power generator has a battery and an alternator driven by an engine. The battery assists a power energy of the alternator. An inverter circuit is connected to an output of a rectifying circuit. A DC/DC converter boosts a voltage of the battery and inputs the boosted voltage into a constant power regulator. The constant power regulator boosts an input voltage and secures a certain power. An output voltage of the rectifying circuit is monitored by a monitoring means and an output voltage of the battery is monitored by a monitoring means. When the output voltage of the rectifying circuit is equal to or less than a rated voltage, an auxiliary power value corresponding to the remaining amount of the battery is set as a power target value of the constant power regulator. | 2011-11-10 |
20110273149 | AUTOMATIC VOLTAGE REGULATOR AND TOROIDAL TRANSFORMER - The present invention relates to an automatic voltage regulator and a toroidal transformer, comprising: a main winding; a primary field winding excited in the main winding; a first switch unit for selectively connecting one end of the primary field winding to either a reference potential or the output terminal; a plurality of secondary field windings excited in the main winding; a second switch unit for selectively switching so that the plurality of secondary field windings are selectively connected to the primary field winding serially; a third switch unit for selectively connecting an end of a serial connection generated by selectively connecting the primary field winding and the secondary field windings to either the reference potential or the input terminal; and a control unit which regulates the level of an output voltage output to the output terminal. | 2011-11-10 |
20110273150 | Control Loop for Switching Power Converters - A pulse regulation loop for a clocked switching power converter where the loop is around a bridge converter. The loop features a comparator, a charge pump and a filter in series, feeding a pulse modulator controlling the clock duty cycle of the bridge. Ripple in the bridge converter output is feed to the comparator which causes the charge pump to inject or remove charge from the filter at the clock rate providing control over the modulator that establishes converter efficiency. The charge pump is of the PLL type, having switches responsive to voltage output from the comparator, evaluating the converter ripple relative to a reference voltage. | 2011-11-10 |
20110273151 | DC-DC CONVERTER CIRCUITS, AND METHODS AND APPARATUS INCLUDING SUCH CIRCUITS - Electrical power from an input voltage supply is converted to first and second output voltages of opposite polarities using a single inductor (L) and only four principal switches (S | 2011-11-10 |
20110273152 | OUTPUT VOLTAGE RIPPLE CONTROL FOR A DC-DC POWER CONVERTER - An output ripple voltage average amplitude of a switch mode DC-DC converter is dynamically maintained. The converter has a switch and an output filter. By varying a switching period (T | 2011-11-10 |
20110273153 | ELECTRONIC CIRCUIT ARRANGED TO CONTROL VOLTAGE APPLIED TO A LOAD - The present invention is concerned with an electronic circuit that is connectable to a voltage source and a load. The circuit comprises a controllable load switch element that is arranged so that a supply voltage provided by the voltage source in a connected state is provided to the load when the load switch element is switched on and is not provided to the load when the load switch element is switched off and a voltage detection circuitry that in the connected state is coupled to the load so as to be energized by the voltage applied to the load. The circuit further comprises a switch-on circuitry that is coupled to the load switch element and is arranged to switch on the load switch element for a determined period of time after a switch arranged between the switch-on circuitry and the voltage source is closed. The proposed circuit allows for using a simple voltage detection circuit that is energized by the voltage to be measured by providing the switch-on circuitry. | 2011-11-10 |
20110273154 | Semiconductor Device - The present invention provides a non-insulated type DC-DC converter having a circuit in which a power MOS·FET for a high side switch and a power MOS·FET for a low side switch are connected in series. In the non-insulated type DC-DC converter, the power transistor for the high side switch, the power transistor for the low side switch, and driver circuits that drive these are respectively constituted by different semiconductor chips. The three semiconductor chips are accommodated in one package, and the semiconductor chip including the power transistor for the high side switch, and the semiconductor chip including the driver circuits are disposed so as to approach each other. | 2011-11-10 |
20110273155 | Hybrid Rectifier - A hybrid voltage rectifier enables a switch mode DC-DC power converter to safely power an external dynamic load by way of a substantially lossless conductive coupling between an output filter of the converter and the load. The rectifier is controlled so as to permit net average current through an inductor of the output filter to be approximately equal to, but not less than, zero by permitting very low loss conduction in the first quadrant and, selectively, cycle by cycle, in the third quadrant during load operation. The converter has a first switch, an output filter, a second switch, and a controller. The output filter is conductively coupled with the first switch, and has an inductor in series with the load. The controller sets state conditions of the second switch, such that the inductor operates in a continuous current mode. | 2011-11-10 |
20110273156 | POWER REGULATOR, CONTROL CIRCUIT, AND METHOD FOR CONTROLLING POWER REGULATOR - A power regulator includes an output terminal, which outputs an output voltage, and a converter unit including a switch circuit, which is supplied with an input voltage, and a coil, which is coupled between the switch circuit and the output terminal. A control circuit compares a feedback voltage, which is in accordance with the output voltage, and a reference voltage and controls the switch circuit in response to a switching timing that is in accordance with the comparison result. The control circuit includes a voltage adding circuit, which adds a ramp voltage to the feedback voltage or the reference voltage, and a timing adjustment circuit, which is coupled to the voltage adding circuit to delay a timing for adding the ramp voltage with the voltage adding circuit from a switching timing of the switch circuit. | 2011-11-10 |
20110273157 | SENSOR-LESS OPERATION AND DETECTION OF CCM AND DCM OPERATION MODES IN SYNCHRONOUS SWITCHING POWER CONVERTERS - Generally, described herein are embodiments of control schemes for sensor-less operation and detection of CCM and DCM in a switching power converter. In one aspect, embodiments of a controller are described that utilize dual control loops and do not require sensing the inductor current or any current in the converter which eliminates or reduces the challenges and problems associated with current sensing. Advantages of embodiments of methods described herein become more significant when used in ultra high switching frequency converters since embodiments of the controller result in eliminating the need for high-speed low-noise current sensing circuitries, when used in on-chip integrated power converters where sensing accuracy may be a more significant issue compared to on-board power converters, and in power converters with paralleled modules since embodiments of the controller eliminate sensing circuitries in each of the modules. | 2011-11-10 |
20110273158 | Control Circuit for a DC-DC Converter - A control circuit according to an embodiment of the present invention for a DC-DC converter which has an input, an output and a series connection of a differentiator, a comparator unit, and an integrator. The series connection is coupled in between the input and the output. The comparator unit has an inverting amplifier. | 2011-11-10 |
20110273159 | POWER CONVERSION CIRCUIT - A power conversion circuit includes a high side switching device connected at its collector to the high potential side of a power supply, a low side switching device connected at its emitter to the low potential side of the power supply, a first junction to which the emitter of the high side switching device and the collector of the low side switching device are connected, a first diode connected at its cathode to the collector of the high side switching device, a second diode connected at its anode to the emitter of the low side switching device, a second junction to which the anode of the first diode and the cathode of the second diode are connected, an inductance connected between the first and second junctions, and a snubber circuit connected to the first junction and adapted to absorb stored energy in the inductance when a freewheeling current flows. | 2011-11-10 |
20110273160 | AC VOLTAGE REGULATOR - A voltage regulator includes a source port configured to be coupled to a power source and a load port configured to be coupled to a load. The voltage regulator also includes a constant current source circuit in electrical communication with the source port and the load port configured to regulate current flowing between the source port and the load port. Current flows in both a positive direction and a negative direction between the source port and the load port, and the constant current source circuit regulates the current that flows in the positive direction and the current that flows in the negative direction. | 2011-11-10 |
20110273161 | ARRANGEMENT FOR LIGHTNING DETECTION - An arrangement to detect a lightning strike in a wind turbine is provided. According to the arrangement, the wind turbines contains an ozone sensor. The ozone sensor is located close to a component of the wind turbine. The component is constructed and arranged in a way that a lightning current, which results from a lightning strike into the wind turbine, is conducted through the component. The component is constructed and arranged in a way that the lightning current results in a corona generating a certain amount of ozone gas, which is detected by the ozone sensor. | 2011-11-10 |
20110273162 | Power Detector - A power detector circuit for measuring output power of an amplifier circuit includes a mirror amplification stage having mirror circuit components substantially similar and corresponding to original circuit components of an amplification stage of the amplifier circuit, and a power sensor circuit coupled to an output node of the mirror amplification stage. | 2011-11-10 |
20110273163 | Solar monitor for solar device - A solar monitor measures electrical characteristics of a designated solar device within an array of solar devices that are coupled in series. The solar monitor includes a charge storage element and a charger coupled to the charge storage element to establish a positive voltage and/or a negative voltage on the charge storage element. A switch within the solar monitor is coupled in a shunt configuration with the designated solar device and with a subsequent device in the array. The switch selectively couples the charge storage element to the designated solar device to vary an operating current that flows between the designated solar device and the subsequent solar device. The solar monitor includes a current detector to measure the current of the designated solar device, and a voltage detector to measure the voltage of the designated solar device. | 2011-11-10 |
20110273164 | Delivered power detection for power amplifiers and related systems and methods - Delivered power detection for power amplifiers (PAs) and related systems and methods are disclosed. The disclosed embodiments and techniques provide a delivered power indication for systems using PAs, including such systems for cellular telephone applications, allow power detection circuitry to be integrated on the same integrated circuit die as the PA, and provide power detection circuitry with output signals at baseband frequencies. In one embodiment, the delivered power detection circuitry includes output voltage level detection circuitry and output current level detection circuitry that provide current signals to multiplier circuitry, which in turn provides current output signals proportional to the actual delivered power to the load as represented by the incident power to the load reduced by the reflected power. | 2011-11-10 |
20110273165 | REPLACEABLE PROBE HEAD - A probe head is disclosed that is detachable from a probe body containing electronics. The probe head including a housing enclosing a sensor and at least part of an electrical connector electrically coupled to the sensor. The housing has a coupling member positioned to detachably connect the housing to the probe body, and when the probe head and probe body are coupled, the electrical connector electrically couples the sensor to the electronics in the probe body. | 2011-11-10 |
20110273166 | MAGNETIC ENCODER SCALE - An encoder scale is a piston rod for use in a pneumatic or hydraulic cylinder. The method includes the steps of providing a mask defining a required groove pattern on an encoder scale member that is formed from a first material (e.g. steel) and etching material from the encoder scale member, through the mask, to form a plurality of grooves in the outer surface of the encoder scale member. A second material such as copper is then deposited on to the encoder scale member to substantially fill the grooves, the second material having a different magnetic permeability than the first material. A machining process (e.g. grinding) is then used to remove any excess second material and thereby provide an encoder scale member having a substantially smooth outer surface. A step of coating the outer surface of the encoder scale member with a metal, such as chronium, is then performed. | 2011-11-10 |
20110273167 | PAPER POSITION SENSOR FOR PRINTER - A paper position sensor for a ticket printer is disclosed. The ticket printer includes a blank ticket tray and a paper guide consisting of an upper and lower guide, which lower guide contains a position sensor wheel that rotates as a result of the frictional contact with the blank ticket, as the ticket passes over the sensor wheel on its way through the guides. The wheel contains an embedded magnetic element such that as the wheel turns, which magnetically provides rotational position information to an adjacently-mounted sensor chip, which is able to determine, magnetically, the position of the wheel. The sensor chip provides data to the printer control as to the position of the ticket through the printer, and thus the printer control is now able to determine the precise position of the ticket in the printer. | 2011-11-10 |
20110273168 | POSITION DETERMINATION OF AN ELECTRIC DRIVE HAVING TWO STATORS AND TWO ROTORS - Disclosed is an electric drive, particularly for a pivoting arm, such as a robotic arm, comprising a rotor, a plurality of magnetic periods and a device for determining the rotational position of the rotor based on at least one measurement signal, which is indicative of the inductance of a pole winding strand that is dependent on the position of the pole winding strand relative to the magnetic periods. The electric drive according to the invention that solves this problem in that two coupled rotor parts, which can be jointly rotated at a rotational angle ratio in relation to each other that is fixed, and assemblies comprising magnetic periods and pole winding strands are provided, the assemblies being separate for the rotor parts, wherein the numbers of the magnetic periods for each rotor part are co-prime, and the device for determining the rotational position of the rotor is provided for determining the position from the measurement signals for the two rotor parts. | 2011-11-10 |
20110273169 | MAGNETIC SENSOR WITH HIGH AND LOW RESOLUTION TRACKS - A sensing apparatus includes high and low-resolution tracks, and a compensation track. The low-resolution track includes a first magnet that has a first magnetic field. The high-resolution track is spaced apart from the low-resolution track by a first gap and includes a second magnet and a third magnet. The second magnet has a second magnetic field that is substantially identical to the first magnetic field, and the third magnet has a third magnetic field that is substantially opposite to the first magnetic field. The compensation track is spaced apart from the high-resolution track by a second gap and includes a fourth magnet having a fourth magnetic field that is substantially opposite to the first magnetic field and configured to reduce a magnetic field from the first magnet that is superimposed on the second and third magnets. | 2011-11-10 |
20110273170 | Method and Apparatus for a Non Contact Metal Sensing Device - A method for detecting metal in an inner region of a caster mould during a casting process using a plurality of eddy current probe assemblies, wherein each of the plurality of eddy current probe assemblies is configured to generate a primary magnetic field passing through nonconductive mould material of the casting mould to the inner region of the casting mould and to provide a signal indicative of a detected secondary magnetic field caused by eddy currents induced in the metal. | 2011-11-10 |
20110273171 | METHOD AND DEVICE FOR DETERMINING WHETHER THERE IS A CHANGE IN A SUBSTRATE BENEATH A LAYER COVERING THE SUBSTRATE - The invention relates to a method for determining whether there is a change in a substrate ( | 2011-11-10 |
20110273172 | Sensor Arrangement and Method for Operating a Sensor Arrangement - A sensor arrangement comprises at least a first magnetic-field sensor (SM | 2011-11-10 |
20110273173 | Sensor Arrangement and Method for Operating a Sensor Arrangement - A sensor arrangement comprises at least one magnetic-field sensor (SM | 2011-11-10 |
20110273174 | MAGNETIC FIELD DETECTION ELEMENT AND SIGNAL TRANSMISSION ELEMENT - A magnetic detection element includes a magnetoresistance effect portion composed of a magnetoresistance effect material and a pair of yoke portions. The pair of yoke portions is composed of a soft magnetic material and are respectively arranged so as to be electrically connected to both sides of the magnetoresistance effect portion. The pair of yoke portions guides magnetic flux into the magnetoresistance effect portion. The magnetic detection element also includes a bypass portion, which is composed of a soft magnetic material and is saturated with magnetic flux at lower magnetic field intensity than the yoke portions, and which guides a part of the magnetic flux generated in the yoke portions so as to divert the magnetic flux from the magnetoresistance effect portion. | 2011-11-10 |
20110273175 | PERMANENT MAGNETIC ASSEMBLY FOR - The present invention relates to an arrangement ( | 2011-11-10 |
20110273176 | SYSTEM AND METHOD FOR USE OF NANOPARTICLES IN IMAGING AND TEMPERATURE MEASUREMENT - This invention provides a system and method that improves the sensitivity and localization capabilities of Magnetic Particle Imaging (MPI) by using combinations of time-varying and static magnetic fields. Combinations of magnetic fields can be used to distribute the signals coming from the magnetic particles among the harmonics and other frequencies in specific ways to improve sensitivity and to provide localization information to speed up or improve the signal-to-noise ratio (SNR) of imaging and/or eliminate the need for saturation fields currently used in MPI. In various embodiments, coils can be provided to extend the sub-saturation region in which nanoparticles reside; to provide a static field offset to bring nanoparticles nearer to saturation; to introduce even and odd harmonics that can be observed; and/or to introduce combinations of frequencies for more-defined observation of signals from nanoparticles. Further embodiments provide for reading of the signal produced by cyclically saturated magnetic nanoparticles in a sample so as to provide a measurement of the temperature of those nanoparticles. | 2011-11-10 |
20110273177 | Electromagnet Assembly - An electromagnet assembly comprises a first pair of substantially co-planar coils wound in opposite senses to each other. It further comprises a second pair of co-planar coils also wound in opposite senses to each other. The coil pairs are arranged substantially parallel to, and spaced apart from, each other. In use, the field shape and direction produced by the first coil pair are substantially mirrored by those produced by the second coil pair. | 2011-11-10 |
20110273178 | DEVICE FOR MARKING OUT BURIED OBJECTS - A method and apparatus for marking the location of a buried object in which the location of the buried object is determined and a barhole driver or plunger bar having a detachable plug element and a marking material for marking the location of the buried object is driven into the ground proximate the location of the buried object. The detachable plug element detaches from the plunger bar as the plunger bar is removed from the ground, leaving a substantially continuous path of the marking material in the ground extending substantially continuously from proximate the detachable plug element to the ground surface. | 2011-11-10 |
20110273179 | Multiple component electromagnetic survey signal acquisition method - A method for marine electromagnetic surveying includes transmitting a first electromagnetic field oriented in a first direction into a body of water. A second electromagnetic field oriented in a second direction is transmitted into the body of water, wherein the second direction is substantially transverse to the first direction. A parameter related to electromagnetic field amplitude is detected at a plurality of longitudinally and laterally spaced apart positions behind a vessel. The components of the detected electromagnetic field parameter are resolved into components along the first and second directions by using the geometrical symmetries and asymmetries of the transmitting source. Systems for implementing such methods are also provided. | 2011-11-10 |
20110273180 | BATTERY TESTING METHOD - The present invention allows batteries to be tested in conjunction with being re-charged, and identifies failed or failing batteries before they are put to further use. The present invention can simultaneously test and charge multiple batteries, and can simultaneously test and charge different types of batteries. A method according to various aspects of the present invention comprises: identifying, by a computer system comprising a user interface, a provided battery to be tested; receiving, through the user interface, a selection one or more tests to perform on the battery; and performing, using a battery testing system, the one or more tests on the battery. In this method, the battery testing system is in communication with the computer system, and the battery testing system comprises a battery interface for coupling with the battery. | 2011-11-10 |
20110273181 | BATTERY TESTING SYSTEM - The present invention allows batteries to be tested in conjunction with being re-charged, and identifies failed or failing batteries before they are put to further use. The present invention can simultaneously test and charge multiple batteries, and can simultaneously test and charge different types of batteries. A system according to various aspects of the present invention comprises a control system. The control system includes: (1) a processor, (2) a user interface in communication with the processor, and (3) a memory in communication with the processor. The memory stores instructions that, when executed by the processor, cause the processor to: identify a provided battery to be tested; and receive, through the user interface, a selection one or more tests to perform on the battery. The system further includes a battery testing system in communication with the control system. The battery testing system comprises a battery interface for coupling with the battery and is configured to perform the one or more tests on the battery. | 2011-11-10 |
20110273182 | DETECTING THE VOLTAGE IN BATTERY CELLS - The invention relates to an evaluation circuit for detecting the voltage in battery cells of a battery system which are preferably connected in series. The evaluation circuit includes serially connected resistors, the number of which is equal to the number of battery cells for which the voltage is to be detected. One of the resistors is associated with each of the battery cells. The evaluation circuit further includes a power source for generating a current that is continuous in some sections and is applied to the serially connected resistors, a number of comparators equal to the number of resistors to compare a voltage released at a resistor associated with a battery cell to the voltage in the battery cell with which the resistor is associated, and output a respective output signal when the voltage released at a resistor associated with a battery cell is equal to, exceeds, or drops below the voltage in the battery cell, and an evaluation circuit for deriving the voltage in each battery cell on the basis of a point in time when the respective output signal is output and on the basis of the variation of the current that is continuous in some sections. | 2011-11-10 |
20110273183 | APPARATUS AND METHOD TO DETECT A SERIES ARC FAULT OF AN ELECTRICAL CIRCUIT - An apparatus is for a power circuit providing an alternating current to a load. The apparatus includes a high frequency current sensor structured to cooperate with the power circuit to provide a high frequency current signal. A voltage zero crossing detector is structured to cooperate with the power circuit to provide a voltage zero crossing signal. A high pass filter is structured to provide a filtered current signal from the high frequency current signal. A threshold comparator is structured to provide an output when the filtered current signal exceeds a predetermined value. A processor is structured to receive the voltage zero crossing signal and the output of the threshold comparator and output a trip signal in response to undesired series arcing by detecting an unsymmetrical high frequency signal for a predetermined number of cycles. | 2011-11-10 |
20110273184 | SYSTEM AND METHOD FOR IMPROVED TESTING OF ELECTRONIC DEVICES - An improved method of testing and sorting electronic devices uses two or more test stations and two or more sorting stations applied to a single track to improve system throughput. Applying two or more test stations and two or more sorting stations to a single track accomplishes improved system throughput while increasing system cost less than would be expected if a duplicate track was installed for each test station. | 2011-11-10 |
20110273185 | METHODS FOR DEFECT TESTING OF EXTERNALLY ACCESSIBLE INTEGRATED CIRCUIT INTERCONNECTS - Apparatus and methods provide built-in testing enhancements in integrated circuits. These testing enhancements permit, for example, continuity testing to pads and/or leakage current testing for more than one pad. The disclosed techniques may permit more thorough testing of integrated circuits at the die level, thereby reducing the number of defective devices that are further processed, saving both time and money. In one embodiment, a test signal is routed in real time through a built-in path that includes an input buffer for a pad under test. This permits testing of continuity between the pad and the input buffer. An output buffer can also be tested as applicable. In another embodiment, two or more pads of a die are electronically coupled together such that leakage current testing applied by a probe connected to one pad can be used to test another pad. | 2011-11-10 |
20110273186 | CIRCUIT FOR CONTROLLING TEMPERATURE AND ENABLING TESTING OF A SEMICONDUCTOR CHIP - A circuit for controlling temperature of a semiconductor chip includes a first heating element that is built into the semiconductor chip. The first heating element generates heat to increase the temperature of the semiconductor chip. The chip also includes a temperature controller that is coupled to the first heating element and built into the semiconductor chip. The temperature controller controls the temperature to enable testing of the semiconductor chip at a desired temperature. | 2011-11-10 |
20110273187 | PASSIVE SOURCE AND LOAD-PULL ARCHITECTURE FOR HIGH REFLECTION FACTOR SYNTHESIS - An enhanced loop in a passive tuner consists of an extremely low loss coupler and a high directivity circulator. In the case of source reflection factor synthesis, a passive loop generates an additional incident traveling wave. This wave, added to the primary incident traveling wave, augments the traveling wave and thus increases the magnitude of the synthesized reflection factor at the source port of a device, such as a transistor. In the case of load reflection factor synthesis, the passive loop augments the initial reflected traveling wave by pumping an additional traveling wave. This additional traveling wave helps in synthesizing a higher load reflection factor at the load port. This architecture is capable of high reflection factor synthesis that enables load synthesis even on the border of the Smith chart. There is no problem of instability with the architecture of the present invention. | 2011-11-10 |
20110273188 | Sensor Device for Detecting an Object in a Detection Area - A sensor device is provided. The sensor device includes a sensor pad for detecting an object in a detection area by measuring the impedance variation of the sensor pad, the sensor device further including a back focus plate disposed behind the sensor pad relative to the detection area and a first surrounding focus plate arranged around the sensor pad. The sensor device includes a signal generator that drives the sensor pad and the focus plates with a first set of signals having a predetermined constant phase, frequency and voltage amplitude. The sensor device further comprises at least a second surrounding focus plate arranged around the first surrounding focus plate, the second surrounding focus plate being driven with a second set of signals that are different from the first set of signals feeding the sensor pa. | 2011-11-10 |
20110273189 | SENSING APPARATUS FOR AND ASSOCIATED METHODS - An apparatus includes an integrated circuit (IC) configured to sense capacitance, and two or more capacitive elements coupled to the IC. The capacitive elements each have a first section, and one capacitive element has a second section. The first sections of the capacitive elements have the same or substantially the same lengths, shapes, and/or capacitance values. | 2011-11-10 |
20110273190 | Sensing Apparatus and Associated Methods - An apparatus includes an integrated circuit (IC) configured to sense capacitance, and two or more capacitive elements coupled to the IC. The capacitive elements each have a first section, and one capacitive element has a second section. The first sections of the capacitive elements have the same or substantially the same lengths, shapes, and/or capacitance values. | 2011-11-10 |
20110273191 | DEVICE FOR DETERMINING A THICKNESS OR THICKNESS VARIATION OF A FLAT OBJECT - A device for determining a thickness or thickness variation of a flat object ( | 2011-11-10 |
20110273192 | CAPACITANCE MEASUREMENT DEVICE FOR A TOUCH CONTROL DEVICE - A capacitance measurement device includes a charging control unit for charging a measured capacitor, a discharging control unit for discharging the measured capacitor, a first switch coupled to the measured capacitor and the charging control unit for controlling a connection between the measured capacitor and the charging control unit according to a first switching signal, a second switch coupled to the measured capacitor and the discharging control unit for controlling a connection between the measured capacitor and the discharging control unit according to a second switching signal, a first A/D converter coupled to the measured capacitor for converting a voltage signal on the measured capacitor into a first signal, and a duty cycle detecting circuit coupled to the measured capacitor for converting the voltage signal on the measured capacitor into a count value that represents the capacitance of the measured capacitor and outputting the count value to a processing unit. | 2011-11-10 |
20110273193 | TOUCH DETECTION METHOD AND RELATED TOUCH CONTROL DEVICE - A touch detection method for a touch control device including a touch panel includes examining whether a charging capacity for charging a measured capacitor of the touch panel and a discharging capacity for discharging the measured capacitor are determined; charging and discharging the measured capacitor by using the charging capacity and the discharging capacity when the charging capacity and the discharging capacity are determined and receiving a count value representing the capacitance of the measured capacitor, examining whether a base count value is set, calculating a difference between the count value and the base count value when the base count value is set, for determining whether the touch panel is touched, examining whether the count value is in a predetermined range, and performing a charging and discharging capacity setting process when the count value is out of the predetermined range, for adjusting the charging capacity and the discharging capacity. | 2011-11-10 |
20110273194 | Object Detection Device for an Automotive Vehicle - A detection device for detecting an object by measuring the capacitance variation of the detection device includes at least a pair of sensor pads, each sensor pad being able to transmit or to receive an electric field. Each sensor pad can be used to measure the impedance variation of the pad, each sensor pad being driven by a driven rail impedance measuring system including an inverter, an oscillator, a power supply rail driver and switches, the measuring system being able to change the sensor pad function from electric field transmitter to electric field receiver or impedance measurer by turning on and off the oscillator to the input of the power supply rail driver of the inverter. | 2011-11-10 |
20110273195 | Touch-Sensitive Sensor Arrangement - A touch-sensitive sensor arrangement comprising a planar-shaped element having a surface provided with a conductive layer, and a plurality of connecting points that are each arranged in an edge area of the element and contacting the conductive layer, wherein a respective decoupling device is arranged for decoupling a current, which is applied to at least two connecting points, from an evaluating signal, between each of the respective connecting points and associated connecting lines for the evaluation of a position of a contact of the element with a contacting object, where the element is heatable by the current. | 2011-11-10 |
20110273196 | Long Range, Battery Powered, Wireless Environmental Sensor Interface Devices - Long range, battery powered, wireless environmental sensor interface devices that can be connected to a plurality of sensors and wirelessly communicate the sensor readings back to a central collection device or Internet terminal. Instead or additionally, sensors can be integrated with the device for added efficiency. The devices incorporate a rugged enclosure and an internal power supply that allows them to be placed in harsh environmental conditions and operate for multiple years without maintenance due to unique power-saving design features. The RF circuitry is specially optimized for long-range outdoor communications of small quantities of data. Line-of-sight communication range of several miles is possible with this device. Various embodiments are disclosed. | 2011-11-10 |
20110273197 | SIGNAL GENERATOR FOR A BUILT-IN SELF TEST - An integrated circuit with Built-in Self Test (BiST) is described. The integrated circuit includes a signal generator used to perform a BiST on the integrated circuit. The integrated circuit also includes a local oscillator used by the signal generator to generate one or more test signals used to perform the BiST on the integrated circuit. | 2011-11-10 |
20110273198 | LOW PROFILE PROBE HAVING IMPROVED MECHANICAL SCRUB AND REDUCED CONTACT INDUCTANCE - A vertically folded probe is provided that can provide improved scrub performance in cases where the probe height is limited. More specifically, such a probe includes a base and a tip, and an arm extending from the base to the tip as a single continuous member. The probe arm is vertically folded, such that it includes three or more vertical arm portions. The vertical arm portions have substantial vertical overlap, and are laterally displaced from each other. When such a probe is vertically brought down onto a device under test, the probe deforms. During probe deformation, at least two of the vertical arm portions come into contact with each other. Such contact between the arm portions can advantageously increase the lateral scrub motion at the probe tip, and can also advantageously reduce the probe inductance. | 2011-11-10 |
20110273199 | VERTICAL PROBE ARRAY ARRANGED TO PROVIDE SPACE TRANSFORMATION - Improved probing of closely spaced contact pads is provided by an array of vertical probes having all of the probe tips aligned along a single contact line, while the probe bases are arranged in an array having two or more rows parallel to the contact line. With this arrangement of probes, the probe base thickness can be made greater than the contact pad spacing along the contact line, thereby advantageously increasing the lateral stiffness of the probes. The probe tip thickness is less than the contact pad spacing, so probes suitable for practicing the invention have a wide base section and a narrow tip section. | 2011-11-10 |
20110273200 | Fault Current Test Equipment of Direct Current Thyristor Valve - The present invention relates to a test equipment of direct current thyristor valve, and particularly relates to a fault current test equipment of direct current thyristor valve. This present invention equipment includes high voltage low current circuit and low voltage high current circuit, said test equipment includes fault current circuit, said fault current circuit includes resonant circuit, said high voltage low current circuit, low voltage high current circuit and fault current circuit are all connected with the thyristor sample Vt respectively. In his present invention, the thyristor sample is first heated through the high voltage circuit and low voltage high current circuit to reach the stable state. And then shut off the switch and carries out the test using the fault current which is produced by the fault current circuit. This prevents the power system from the short-circuit impact. Further more, the peak current and the current duration of the fault current circuit can be adjusted flexibly by changing the voltage of the adding energy circuit. | 2011-11-10 |
20110273201 | High Voltage Thyristor Valve Multi-Injection Test Method - This invention provides a high voltage thyristor valve multi-injection test method, it can meet one way valve and double valve operation test and over current test requirements. It has high equivalence and good flexibility. It includes FACTS double way thyristor valve and normal direct current thyristor valve operation tests and over current test. This method is novel, flexible, can carry out many different test and their mixture test and including the high voltage thyrsor valve different tests. | 2011-11-10 |
20110273202 | CIRCUT BOARD AND MEHTOD FOR TESTING COMPONENT BUILT IN THE CIRCUIT BOARD - Disclosed herein are a circuit board and a method for testing devices embedded inside the circuit board. The circuit board according to an embodiment of the present invention includes an active device that is embedded inside the circuit board and includes at least one connection terminal; a passive device of which one terminal is electrically connected to one of the connection terminals of the active device and the other terminal is electrically connected to a signal pad on a surface of the circuit board; and a test pad that is electrically connected to the one terminal of the passive device. According to the present invention, even when the active device and the passive device are embedded inside the board, it is possible to effectively test a connection state of each device, thereby making it possible to easily determine whether defects occur in the circuit board. | 2011-11-10 |
20110273203 | METHOD FOR THE TESTING OF CIRCUIT BOARDS - The invention relates to a method for the testing of circuit boards using a testing apparatus which has a test set-up for contacting the circuit board test points of a circuit board to be tested. The test set-up has test contact elements in a predetermined regular grid. The method involves the following steps:
| 2011-11-10 |
20110273204 | PARALLEL SCAN DISTRIBUTORS AND COLLECTORS AND PROCESS OF TESTING INTEGRATED CIRCUITS - An integrated circuit ( | 2011-11-10 |
20110273205 | RECONFIGURABLE INTEGRATED CIRCUIT - A reconfigurable integrated circuit has non-volatile storage cells which form a plurality of programmable routing switches between basic tiles. The circuit includes a plurality of non-volatile storage cells providing a multiplexer-type programmable routing switch including a plurality of input terminals and an output terminal. The non-volatile storage cells are structured as a field effect transistor with a switch function and are placed in a propagation path of signal voltage from the input terminals to the output terminal, and the non-volatile storage cells configure the multiplexer-type programmable routing switch to selectively propagate the signal voltage from the input terminals, to provide a control circuit which directly writes conducted or non-conducted status for the non-volatile storage cells, erases the connection information, and reads to verify the conducted or non-conducted status of the non-volatile storage cells. . | 2011-11-10 |
20110273206 | SWITCHING GATE DRIVER - Disclosed is a switching gate driver of an IGBT device, including a resistor unit to control a gate current of the IGBT device; and a voltage reader that outputs a control signal to control a variable resistor unit of the resistor unit to the resistor unit, according to a collector-emitter voltage of the IGBT device. | 2011-11-10 |
20110273207 | JUNCTION GATE DRIVER - A junction device driver is provided that includes a current regulator, an inductor coupled with the current regulator, and a switching module coupled with the inductor. The current regulator is configured to generate a current, and the inductor is configured to store energy generated by the current produced by the current regulator. The switching module is configured to control a conduction current for a gate of a junction device. The conduction current is generated, initially, from the stored energy of the inductor to thereby provide a relatively high initial current. As the energy stored in the inductor is discharged, the current level drops to a lower level that is sufficient to maintain the junction device in an “on” state. | 2011-11-10 |
20110273208 | JUNCTION GATE DRIVER WITH TAPPED INDUCTOR CURRENT SOURCE - A junction device driver is provided that includes a current regulator, an inductor coupled with the current regulator, and a switching module coupled with the inductor. The current regulator is configured to generate a current, and the inductor is configured to store energy generated by the current produced by the current regulator. The switching module is configured to control a conduction current for a gate of a junction device. The conduction current is generated, initially, from the stored energy of the inductor to thereby provide a relatively high initial current. As the energy stored in the inductor is discharged, the current level drops to a lower level that is sufficient to maintain the junction device in an “on” state. | 2011-11-10 |
20110273209 | One-shot circuit capable of being integrated into a chip, transmitter capable of reducing start-up time, and related method - A one-shot circuit capable of being integrated into a chip generates a frequency-dividing signal according to a reference clock signal of a clock signal generator by means of a frequency-dividing circuit. In this way, the order of the magnitude of the cycle length of the frequency-dividing signal can be raised up by increasing the frequency-dividing times in the frequency-dividing circuit, so that the resistance and the capacitance of an RC oscillator of the clock signal generator are effectively reduced. Therefore, the circuited area occupied by the RC oscillator of the clock signal generator is reduced, so that the one shot circuit can be integrated into a chip without increasing the cost. | 2011-11-10 |
20110273210 | LOW POWER DIGITAL PHASE LOCK LOOP CIRCUIT - A digital phase lock loop circuit, where under certain conditions the phase error is derived from phase comparison between a reference clock edge and the next oscillator clock edge rather than a feedback clock edge. This technique can be used to significantly reduce digital phase lock loop circuit power by disabling feedback divider and sync FF once initial frequency lock is established, provided phase jitter of digital phase lock loop circuit is low enough so that there is no cycle slip. This technique can also be used to multiply the effective reference clock frequency of digital phase lock loop circuits to increases the loop bandwidth, thus reducing the phase noise. Both the applications of this technique can be combined in some circuits. | 2011-11-10 |
20110273211 | CIRCUIT AND METHOD FOR PROVIDING A CORRECTED DUTY CYCLE - A duty cycle correction circuit comprises a duty cycle detector, a filter, an amplifier, a charge pump, a control circuit, and a duty cycle corrector. The duty cycle detector is configured to generate a first pair of control signals according to a pair of internal clock signals. The filter is configured to obtain average voltages of the first pair of control signals. The amplifier is configured to compare output voltages of the filter for generating an enable signal, and the control circuit is configured to generate a selection signal according to the enable signal. The charge pump is configured to generate a second pair of control signals according to the enable signal and the selection signal, and the duty cycle corrector is configured to receive a pair of external clock signals, the first pair of control signals, and the second pair of control signals for generating the pair of internal clock signals with a corrected duty cycle. | 2011-11-10 |
20110273212 | SELECTIVE EDGE PHASE MIXING - Electronic apparatus, systems, and methods to implement selective edge phase mixing are disclosed. A selective edge phase mixing system includes a processor and memory device configured to perform operations in synchronization with transitions of an externally provided clock signal. A selective edge phase mixing unit for the memory device may include a first logic gate that receives the clock signal at an input port and receives first control signals, and pull-up circuits in communication with an output of the first logic gate and first control signals. A second logic gate receives the clock signal at the input port and receives second control signals. Pull-down circuits are coupled to the second logic gate and the second control signals, wherein the pull-up circuits and the pull-down circuits are coupled to the output port to provide a duty cycle corrected clock signal to the memory device. Additional apparatus, systems, and methods are disclosed. | 2011-11-10 |
20110273213 | METHOD AND APPARATUS TO DYNAMICALLY ADJUST A CLOCK RATE IN A MOBILE DEVICE - In a particular embodiment, a method includes dynamically adjusting a clock rate to one or more hardware components within a mobile device during a silence period. During the silence period of a video telephony call, when a user of the mobile device is not speaking, the mobile device monitors the background noise and compares detected background noise data to previously detected background noise data to determine changes in the background noise. If the comparison shows that the change in background noise does not result in a change in background noise conditions or does not exceed a difference threshold, the clock rate to certain hardware components may be reduced and portions of certain hardware components may be powered down. The mobile device may send previously stored background noise update packets. | 2011-11-10 |
20110273214 | CLOCK GENERATING CIRCUIT - According to one embodiment, a clock generating circuit includes first and second current generating circuits, first and second voltage generating circuits, first and second comparing circuits, a clock output circuit, a control circuit. The first current generating circuit is configured to generate a first current. The first voltage generating circuit is configured to generate a first voltage which increases or decreases according to a phase of a clock signal as time advances by the first current. The first comparing circuit is configured to compare the first voltage with a first threshold voltage to generate a first comparison result. The second current generating circuit is configured to generate a second current. The second comparing circuit is configured to compare the second voltage with a second threshold voltage to generate a second comparison result. The clock output circuit is configured to generate the clock signal whose phase inverts in synchronization with timing when the first and the second comparison results change. The control circuit is configured to generate a random number and configured to variably control at least one of the first current, the second current, the first threshold voltage and the second threshold voltage according to the random number. | 2011-11-10 |
20110273215 | HIGH JITTER AND FREQUENCY DRIFT TOLERANT CLOCK DATA RECOVERY - In a method for recovery of a clock from a received digital data stream and an apparatus for recovering a clock from a received digital data stream, phase-shifted clock signals are generated from a receiver's clock. After selecting one of the phase-shifted clock signals, two other phase-shifted clock signals are determined. Depending on sample values taken at rising/falling edges of the three selected phase-shifted clock signals, counter values are increased and compared. The selection of phase-shifted clock signals and the steps of sampling the input digital data stream, comparing the values and increasing counter values, if required, are repeatedly performed until the comparison result of the counter values indicates that one of the latter determined phase-shifted clock signals strobes the received digital data stream in the centre of a bit period. | 2011-11-10 |
20110273216 | LOAD CONDITION CONTROLLED POWER MODULE - In accordance with various aspects of the present invention, a method and circuit for reducing power consumption of a power module during idle conditions is provided. In an exemplary embodiment, a power module is configured for reducing power during idle mode by disengaging at least one power output from a power input. A power module may include one or more power outputs and one or more power module circuits, with power input connected to the power outputs through the power module circuit(s). The power module circuit may include a current measuring system, a control circuit, and a switch. The current measuring system provides an output power level signal that is proportional to the load at the power output. If current measuring system behavior indicates that a power output is drawing substantially no power from the power input, the switch disengages the power input from the power output. | 2011-11-10 |
20110273217 | VOLTAGE GENERATING CIRCUIT FOR AN ATTENUATOR - A circuit includes a digital-to-analog converter (DAC), coupled to a power supply, that provides a first current at a first output terminal of the DAC and a second current at a second output terminal of the DAC, the first current being differential to the second current; a first circuit, coupled to the first output terminal of the DAC and to the second output terminal of the DAC, that generates a first voltage and a second voltage, the first voltage being non-linear with respect to the first current and the second voltage being non-linear with respect to the second current; and an attenuator coupled to the first circuit, and responsive to the first voltage and the second voltage to attenuate an input signal of the attenuator and to generate linear attenuation characteristics in decibels with respect to the first current and the second current. | 2011-11-10 |