06th week of 2011 patent applcation highlights part 19 |
Patent application number | Title | Published |
20110031918 | Output circuit - A power transistor is arranged between an output terminal and a power supply terminal. A pre-driver includes a high-side transistor and a low-side transistor connected in series between the power supply terminal and a second terminal, and the ON/OFF operations of which are controlled in a complementary manner according to a control signal. The electric potential at a connection node between the two transistors is output to a control terminal of the power transistor. A constant voltage circuit stabilizes the second terminal to a predetermined voltage. An output transistor for the constant voltage circuit is provided between the second terminal and the ground terminal. A differential amplifier adjusts the voltage applied to the control terminal of the output transistor such that the electric potential at the second terminal approaches a predetermined target value. A feedback capacitor is provided between the second terminal and the control terminal of the output transistor. | 2011-02-10 |
20110031919 | CONTROLLER AND METHOD FOR MINIMIZING PHASE ADVANCE CURRENT - A current control module generates a voltage request based on a d-axis current (Idr) demand. A switching control module controls a motor based on the voltage request and generates an out-of-volts (OOV) signal based on a comparison of the voltage request and an available voltage. An Idr injection module generates the Idr demand based on a direct current (DC) bus voltage, a rotational speed, and a demanded torque and selectively applies a first adjustment to the Idr demand. The Idr injection module identifies whether an improvement resulted from the first adjustment, wherein the improvement is identified based on at least one of (i) a measured current of the motor and (ii) the OOV signal. The Idr injection module selectively applies a second adjustment to the Idr demand based on whether the improvement is identified. | 2011-02-10 |
20110031920 | CONTROLLER AND METHOD FOR ESTIMATING, MANAGING, AND DIAGNOSING MOTOR PARAMETERS - A motor control system includes a control module, a switching module, and a filtering module. The control module determines output voltages for operating a motor based on a torque demand. The switching module generates switching signals for an inverter that drives the motor. The switching module generates the switching signals based on the output voltages. The switching module generates an out-of-volts (OOV) signal according to a comparison based on the output voltages, a maximum duty cycle, and a voltage of a direct current (DC) bus that provides power to the inverter. The filtering module generates an OOV amount by filtering the OOV signal. The control module selectively limits the torque demand based on the OOV amount. | 2011-02-10 |
20110031921 | RAIN SENSOR - During rain, including a light source ( | 2011-02-10 |
20110031922 | ELECTRIC MOTOR DRIVE DEVICE, CONTROL METHOD OF ELECTRIC MOTOR DRIVE DEVICE, AND ELECTRICALLY DRIVEN DEVICE - An electric motor drive device has an inverter adjusting the voltage applied to an AC electric motor so as to drive the AC electric motor, a capacitor which is charged by a current supplied from a DC power supply supplying DC voltage between a neutral point at which a plurality of coils of the AC electric motor are connected and a positive rail or negative rail of an inverter and passing through the inverter, and a control circuit controlling the inverter so that the AC electric motor turns at a designated speed. Further, the control circuit selectively uses field weakening control and voltage boosting control for control of the inverter according to the conditions of the induced voltage generated at the AC electric motor, DC power supply, and voltage of the capacitor. | 2011-02-10 |
20110031923 | APPARATUS EQUIPPED WITH MOTOR AND DRIVING METHOD FOR THE MOTOR - An apparatus including a DC motor includes a driven member configured to be driven by the DC motor, and a drive control unit configured to define a plurality of predetermined phases of the DC motor as target stop phases and to cause the DC motor to make at least one rotation to perform preliminary driving that rotates the DC motor to each target stop phase by driving and stopping the DC motor, configured to acquire a difference value between the target stop phase and an actual stop phase for each target stop phase, and configured to drive the DC motor so that the driven member is repeatedly moved and stopped in the operation of the driven member and to perform control so that, based on the difference value acquired by the acquisition unit, electric power is supplied to the DC motor in a phase corresponding to a stop position of the driven member. | 2011-02-10 |
20110031924 | SHAPE MEMORY ALLOY DRIVER - A shape memory alloy driver comprises a displacement detection portion, a drive control portion, and a compensation calculation portion. The displacement detection portion detects displacement of a shape memory alloy based on a resistance value etc. detected from the shape memory alloy. The drive control portion applies a voltage or current to the shape memory alloy by servo control to thereby displace the shape memory alloy to a target displacement value fed from a microcomputer etc. The compensation calculation portion calculates a compensated displacement value from the detected displacement value and a variation—attributable to the environment temperature—of the drive control value which the drive control portion uses for controlling the voltage or current. Having been fed with the compensated displacement value, the drive control portion varies the drive control value such that the compensated displacement value is equal to the target displacement value. | 2011-02-10 |
20110031925 | NANOSATELLITE PHOTOVOLTAIC REGULATOR - A solar cell regulator in a nanosatellite includes a pulse width modulated DC-DC boost converter and a peak power tracking controller for converting solar cell power to bus power for charging of system batteries and powering loads while the controller controls the pulse width modulation operation of the converter for sensing solar cell currents and voltages along a power characteristic curve of the solar cell for peak power tracking, for determining any power data point, including a peak power point, an open circuit voltage point, and a short circuit current point along the power characteristic curve of the solar cell, and for communicating the power data to a satellite processor for monitoring the performance of the solar cell during operational use of the satellite. | 2011-02-10 |
20110031926 | BATTERY CHARGER FOR A PHTOVOLTAIC SYSTEM, A CONTROLLER THEREFOR AND A METHOD OF CONTROLLING THE SAME - A battery charger, or charge controller, for a photovoltaic system is disclosed, comprising a maximum power point tracker (MPPT) circuit, which may be bypassed by means of a bypass circuit. The bypass circuit may be a simple electrical wire or link. The battery charger is operable to track the maximum power of a photogenerator by means of the MPPT, or to bypass the MPPT and disable it, in dependence on whether the power loss which results from the MPPT would be greater than the power saving achieved by tracking the maximum power point of the photogenerator. | 2011-02-10 |
20110031927 | CHARGING SYSTEM WITH GALVANIC ISOLATION AND MULTIPLE OPERATING MODES - Systems and methods are provided for operating a charging system with galvanic isolation adapted for multiple operating modes. A vehicle charging system comprises a DC interface, an AC interface, a first conversion module coupled to the DC interface, and a second conversion module coupled to the AC interface. An isolation module is coupled between the first conversion module and the second conversion module. The isolation module comprises a transformer and a switching element coupled between the transformer and the second conversion module. The transformer and the switching element are cooperatively configured for a plurality of operating modes, wherein each operating mode of the plurality of operating modes corresponds to a respective turns ratio of the transformer. | 2011-02-10 |
20110031928 | Soldier system wireless power and data transmission - An inductively coupled power and data transmission system include a main power source, apparel having an electrical conductor in electrical communication with the main power source, the apparel having a first inductively couplable power and data transmission sub-system to regulate power to the primary coil or coils and transmission of power and data by the primary coil or coils and reception of data by the primary coil or coils, and an independent device having a second inductively couplable power and data transmission sub-system so as to regulate reception of power and data by the secondary coil or coils and transmission of data from a secondary processor by the secondary coil or coils. The first and second primary coils transfer said power and data during inductive coupling, at electromagnetic radiation frequencies, between the first primary coil or coils and the secondary coil or coils. | 2011-02-10 |
20110031929 | Electric supply controller, electric supply system and method for controlling electric supply to charger and vehicle - Chargers are connectable with vehicles. An electric supply controller controls a switching circuit to connect an electric power supply line to one of the chargers. A storage unit of the electric supply controller associates information on a priority to each of the vehicles and stores the associated information therein. When the vehicles are simultaneously connected to different chargers, a control unit of the electric supply controller controls the switching circuit to connect the electric power supply line preferentially to one of the different chargers. The one of the different chargers is connected to one of the vehicles assigned with a highest priority. | 2011-02-10 |
20110031930 | SYSTEMS AND METHODS FOR BI-DIRECTIONAL ENERGY DELIVERY WITH GALVANIC ISOLATION - Systems and methods are provided for bi-directional energy delivery. A charging system comprises a first bi-directional conversion module, a second bi-directional conversion module, and an isolation module coupled between the first bi-directional conversion module and the second bi-directional conversion module. The isolation module provides galvanic isolation between the first bi-directional conversion module and the second bi-directional conversion module. | 2011-02-10 |
20110031931 | METHOD AND APPARATUS FOR PROVIDING POWER TO A MARINE VESSEL - A system and a method for providing power to a marine vessel and, more particularly to a tugboat is disclosed. The system includes diesel engines and generators and batteries which can be charged using power supplied by the generators, shore power or regenerated power. The tugboat is operated utilizing battery power only and the generators are used to provide additional power if needed or to recharge the batteries. | 2011-02-10 |
20110031932 | METHOD FOR RECOVERING AN ACCUMULATOR BATTERY AND APPARATUS FOR PERFORMING THEREOF - A method for recovering the accumulator battery, according to which method performed are the steps of: charging the accumulator battery that is carried out by passing therethrough the sequence of the rectangular current pulses which have a magnitude in the range of 400 to 480 A and a duty factor of 100 to 400; discharging the accumulator battery that is carried out in the pauses between the actions of the rectangular pulses for charging; and ceasing the cycles of charging with the rectangular pulses and discharging in the pauses therebetween when the measured amounts reach the values of the parameters defining the end of the process for charging the battery and recorded preliminary into the memory; then measuring the battery capacity by using the control discharge of the battery, and ceasing the control discharge when the voltage amount of the battery reaches the maximum permissible value set for this battery. | 2011-02-10 |
20110031933 | AIRCRAFT BATTERY CHARGING SYSTEM - An aircraft battery charging system having an alternator with a rotatably driven field coil and a stator coil in which the stator coil is connected to a voltage output from the alternator. The system includes a power source, a first voltage regulator and a second voltage regulator. A switch mechanism selectively connects one of the first or second voltage regulators to one end of the field coil. | 2011-02-10 |
20110031934 | Power management unit for a wireless device - A method and apparatus is disclosed to regulate an input voltage to provide a regulated output power. The regulated output power may include a smooth direct current (DC) component and an undesired alternating current (AC) component, the smooth DC component being an average of the regulated output power. A buck regulator module of the present invention regulates the smooth DC component to approximate a reference voltage. The buck regulator module additionally replicates the undesired AC component embedded within the regulated output power. A replicated undesired AC component is combined with the regulated output power to reduce the undesired AC component embedded within the output power. | 2011-02-10 |
20110031935 | NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND MANUFACTURING PROCESS FOR THE SAME - The present invention is characterized in that, in a negative electrode for lithium-ion secondary battery, the negative electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of collector, the binder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I); and the active material includes a lithium-inactive metal that does not form any intermetallic compounds with lithium, or a silicide of the lithium-inactive metal, and an elemental substance of Si. It is possible to upgrade cyclic characteristics by means of using the negative electrode for lithium-ion secondary battery according to the present invention. | 2011-02-10 |
20110031936 | APPARATUS AND METHOD FOR TRANSMISSION LINE CONTROL - It is presented an apparatus comprising: a converter ( | 2011-02-10 |
20110031937 | MOTOR-DRIVEN VEHICLE - In a motor-driven vehicle using power stored in a secondary battery as a source of motive power in which part of vehicle braking is achieved by regenerative braking by generating electrical energy absorbed by charging the secondary battery, the state of charge of the secondary battery is adjusted during charging so that, when charging is completed, the state of charge of the battery will be such that it is still capable of receiving energy generated during regenerative braking. During charging, after the battery has been charged to a target charge level, and battery temperature has subsequently changed, a state where the battery is still capable of receiving energy generated during regenerative braking can be achieved by slightly discharging the battery depending on the temperature of the battery. Such slight discharge of the battery can be obtained by powering an electric heater ( | 2011-02-10 |
20110031938 | Method of Estimating Battery State of Charge - The present teachings are directed toward a machine implemented method for estimating the state of charge of a battery. The machine implemented method includes providing measured and estimated cell terminal voltage to a model coefficient updater to update a model coefficient. Battery current information is provided to a battery state of charge estimator along with the updated model coefficient so that the estimated state of charge can be determined. A multi-layer model can be utilized to determine the states of charge for layers of the electrodes. The method can be implemented on a processing device, and is particularly applicable to Li-ion batteries. | 2011-02-10 |
20110031939 | Discharge Circuit for Smoothing Capacitor of DC Power Supply - A discharge circuit for a DC power supply smoothing capacitor that is used in a power conversion device that supplies DC power via a switch to the DC power supply smoothing capacitor and an inverter, includes; a resistor that discharges charge in the capacitor; a switch connected in series with the resistor, that either passes or intercepts discharge current flowing from the capacitor to the resistor; a measurement circuit that measures a terminal voltage of the capacitor; and a control circuit that controls continuity and discontinuity of the switch; wherein the control circuit, after having made the switch continuous and starting discharge of the capacitor by the resistor, if a terminal voltage of the capacitor as measured by the measurement circuit exceeds a voltage decrease characteristic set in advance, makes the switch discontinuous and stops discharge by the resistor. | 2011-02-10 |
20110031940 | SYSTEM AND METHOD FOR POWER FACTOR CORRECTION FREQUENCY TRACKING AND REFERENCE GENERATION - A power factor correction (PFC) system includes a period determination module, a frequency generation module, an angle generation module, a signal generation module, and an angle correction module. The period determination module determines a period of an input alternating current (AC) line signal based on a time between rising edges of the input AC line signal. The frequency generation module generates a frequency based on the period. The angle generation module generates an angle based on the frequency. The signal generation module generates a sinusoidal reference signal based on the frequency and an adjusted angle. The angle correction module generates the adjusted angle based on the angle and based on a comparison of a falling edge of the sinusoidal reference signal, the period, and a rising edge of the input AC line signal. | 2011-02-10 |
20110031941 | SYSTEM AND METHOD FOR CURRENT BALANCING - A power factor correction (PFC) system includes a comparison module, an adjustment module, a compensation module, and a duty cycle control module. The comparison module measures N currents having different phases, and generates (N−1) comparisons based on the N measured currents, wherein N is an integer greater than one. The adjustment module determines (N−1) time advance adjustments based on the (N−1) comparisons, respectively. The compensation module generates N compensated versions of an input alternating current (AC) line signal based on the input AC line signal, a sinusoidal reference signal, and the (N−1) time advance adjustments, wherein the sinusoidal reference signal is synchronized to the input AC line signal in phase and frequency. The duty cycle control module controls PFC switching based on the N compensated versions of the input AC line signal. | 2011-02-10 |
20110031942 | SYSTEM AND METHOD FOR REDUCING LINE CURRENT DISTORTION - A power factor correction (PFC) system includes an adjustment module, a compensation module, and a duty cycle control module. The adjustment module generates N time advances based on N predetermined time advances and (N−1) time advance adjustments, wherein N is an integer greater than zero. The compensation module generates N compensated versions of an input alternating current (AC) line signal by predicting ahead of the input AC line signal using a gradient of a sinusoidal reference signal and the N time advances, respectively, wherein the sinusoidal reference signal is synchronized with the input AC line signal in phase and frequency. The duty cycle control module generates PFC duty cycles based on the N compensated versions of the input AC line signal. | 2011-02-10 |
20110031943 | SYSTEM AND METHOD FOR REJECTING DC CURRENT IN POWER FACTOR CORRECTION SYSTEMS - A power factor correction (PFC) system includes a direct current (DC) module, an error control module, an offset module, and a duty cycle control module. The DC module determines an average current value based on a plurality of current values over at least one cycle of an input alternating current (AC) line signal of the PFC system. The error control module generates an error signal based on the average current value. The offset module offsets a desired instantaneous current based on the error signal. The duty cycle control module controls at least one duty cycle of switches of the PFC system based on the offset desired instantaneous current. | 2011-02-10 |
20110031944 | HIGH VOLTAGE LATCHING AND DC RESTORATION ISOLATION AND LEVEL SHIFTING METHOD AND APPARATUS - A device and method for dc isolation and level shifting includes a driver circuit powered by a first voltage range, a capacitor connected to the driver circuit, and a latching circuit connected to the capacitor. The latching circuit is powered by a second voltage range and is configured to restore and/or minimize charge loss of the capacitor during a voltage transition at the capacitor. A device and method for analog isolation and measurement configured to measure an analog voltage at a second potential without requiring analog circuits at the second potential. | 2011-02-10 |
20110031945 | THRESHOLD VOLTAGE EXTRACTION CIRCUIT - A pair of MOS transistors ( | 2011-02-10 |
20110031946 | Multiple Branch Alternative Element Power Regulation - A power regulation circuit includes at least a first regulator connected to a second regulator in series forming a first regulator pair and a third regulator connected to a fourth regulator in series forming a second regulator pair. The first regulator pair is connected in parallel with the second regulator pair. Each individual regulator is configured to separately regulate an input voltage to a predetermined regulated output voltage. The second regulator pair regulates the input voltage if a short condition occurs within the first regulator pair and the second and fourth regulators each regulate the input voltage if an open condition occurs within the first or third regulator respectively. | 2011-02-10 |
20110031947 | Flip chip package for monolithic switching regulator - Methods and apparatuses related to packaging a monolithic voltage regulator are disclosed. In one embodiment, an apparatus includes: (i) a monolithic voltage regulator with a transistor arranged as parallel transistor devices; (ii) bumps on the monolithic voltage regulator to form connections to source and drain terminals of the transistor; (iii) a single layer lead frame with a plurality of interleaving lead fingers coupled to the monolithic voltage regulator via the bumps, where the single layer lead frame includes first and second surfaces, where the first surface includes a first pattern to form connections to the bumps, and where the second surface includes a second pattern that is different from the first pattern; and (iv) a flip-chip package encapsulating the monolithic voltage regulator, the bumps, and the single layer lead frame, where the flip-chip package has external connectors of the monolithic voltage regulator at the second surface of the single layer lead frame. | 2011-02-10 |
20110031948 | DC-DC CONVERTER - A DC-DC converter including a Pulse Width Modulation (PWM) controller for converting an input voltage into an output voltage is provided. The PWM controller includes an error amplifier, a comparator, a PWM generator and a ramp generator. The error amplifier generates an error signal according to a difference between a reference voltage and the output voltage. The comparator compares the error signal with a ramp signal to generate a trigger signal. The PWM generator generates a PWM signal with a fixed turn-on time, wherein a frequency of the PWM signal is adjusted according to the trigger signal, the input and output voltages. The ramp generator generates the ramp signal according to the PWM signal, the input voltage and the output voltage. | 2011-02-10 |
20110031949 | SELF-OSCILLATING SWITCHED MODE CONVERTER WITH VALLEY DETECTION - An energy converter is disclosed in which self oscillation mode operation is improved by a closed loop feedback control. The feedback control utilises the voltage error from the voltage valley in the drain voltage (Vdrain) of the converter switch ( | 2011-02-10 |
20110031950 | System and Method for Load Control - A system is described including a means for receiving a potential and selectively supplying the potential to a load. The receiving and supplying means being responsive to a load control signal to supply the potential to the load when the load control signal is present. The system also includes a means for measuring a load demand. Also included is a means for controlling the receiving and supplying means. The controlling means continuously providing the load control signal when the load demand is greater than a predetermined threshold. The controlling means temporarily providing the load control signal to determine the load demand when the load demand is less than the predetermined threshold. | 2011-02-10 |
20110031951 | FREQUENCY MODULATION CONTROL OF A BUCK-BOOST POWER CONVERTER - A control circuit and method are proposed to generate a control signal to operate a buck-boost power stage of a buck-boost power converter to convert an input voltage to an output voltage. The control circuit and method detect the output voltage to generate an error signal, control the frequency of two ramp signals according to the error signal, generate two pulse width modulation signals according to the error signal and the two ramp signals, and generate the control signal according to the two pulse width modulation signals. When the loading of the buck-boost power converter transits from heavy to light, the frequency of the two ramp signals is decreased to improve the efficiency of the buck-boost power converter. The peaks and valleys of the two ramp signals may be adjusted by signals related to the input voltage and the output voltage. | 2011-02-10 |
20110031952 | SEMICONDUCTOR APPARATUS AND POWER SOURCE CIRCUIT - According to one embodiment, a semiconductor apparatus includes a substrate, a semiconductor layer of a first conductivity type, a first semiconductor region of a second conductivity type, a first main electrode, a second semiconductor layer of the second conductivity type, a third semiconductor layer of the first conductivity type, a second main electrode, a gate insulating film, and a gate electrode. An electron injected from the first semiconductor region into the semiconductor layer is recombined with an electron hole injected from the third semiconductor region into the semiconductor layer in a state of a body diode is biased in a forward direction. The body diode includes the semiconductor layer, the first semiconductor region, and the third semiconductor region. | 2011-02-10 |
20110031953 | ENVELOPE TRACKING POWER SUPPLY CIRCUIT AND HIGH-FREQUENCY AMPLIFIER INCLUDING ENVELOPE TRACKING POWER SUPPLY CIRCUIT - The invention aims to maintain a high efficiency even for a high-frequency signal having a wideband envelope. The envelope tracking power supply circuit | 2011-02-10 |
20110031954 | Driving power-supply circuit - The object of the present invention is reducing power consumption of a driving power supply circuit. In the case where the driving voltage Vi is higher than the reference voltage ViH, The signal S | 2011-02-10 |
20110031955 | CONSTANT CURRENT DEVICE - A constant current device in accordance with the present invention is connected to an external voltage source and comprises an input unit, a driving transistor and a voltage control unit. The input unit is connected to the external voltage source. The driving transistor is used to output constant current. The voltage control unit makes the driving output constant current and comprises at least one resistor and a semiconductor load, and has a resistor voltage, the resistor comprising an input and an output. | 2011-02-10 |
20110031956 | HIGH-EFFICIENCY, SWITCHED-CAPACITOR POWER CONVERSION - Some embodiments of the present invention provide a system that efficiently converts between a lower input voltage and a higher output voltage. This system includes an input which receives the input voltage, and an output which provides the output voltage. The system also includes a first capacitor with a higher potential terminal and a lower potential terminal, as well as a first set of switching devices which selectively couple the higher potential and lower potential terminals of the first capacitor between the input voltage, the output voltage and a base voltage. The system additionally includes a resonant clocking circuit which generates clock signals with substantially non-overlapping clock phases, including a first phase and a second phase. This resonant clocking circuit is configured to control the first set of switching devices so that during the first phase, the higher potential terminal of the first capacitor is coupled to the input voltage and the lower potential terminal of the first capacitor is coupled to the base voltage, and during the second phase, the higher potential terminal of the first capacitor is coupled to the output voltage and the lower potential terminal of the first capacitor is coupled to the input voltage. | 2011-02-10 |
20110031957 | CONTROLLING POWER LOSS IN A SWITCHED-CAPACITOR POWER CONVERTER - The disclosed embodiments relate to a system that implements a switched-capacitor power converter which is configured to actively control power loss while converting an input voltage to an output voltage. This system includes one or more switched-capacitor blocks (SCBs), wherein each SCB includes a first capacitor and a set of switching devices configured to couple a constant-potential terminal and a time-varying-potential terminal of the first capacitor between the input voltage, the output voltage and a reference voltage. The system also includes a clocking circuit which produces gate drive signals for switching transistors in the one or more SCBs. The system additionally includes a controller configured to actively control the gate drive signals from the clocking circuit to substantially minimize the power loss for the switched-capacitor power converter. | 2011-02-10 |
20110031958 | POWER CONVERSION EFFICIENCY MEASUREMENT SYSTEM AND METHOD - A system measures power conversion efficiency of a voltage regulator. A measurement setting module presets a maximum output current and a total measurement number, and calculates each target output current of the voltage regulator. A load adjustment module adjusts an impedance of the electronic load to equal current passing through the electronic load to the target output current of the voltage regulator. A calculation module calculates each output power and input power, and power conversion efficiencies for each sequence number of measurement. | 2011-02-10 |
20110031959 | ACCELERATION SENSOR - An acceleration sensor includes a substrate, first and second torsion beams, first and second detection frames, first and second detection electrodes, first and second link beams, and an inertial mass body. The first and second torsion beams are distorted around the first and second torsion axes. The first and second detection frames are rotated about the first and second torsion axes. The first and second detection electrodes detect an angle formed between the substrate and each of the first and second detection frames. The first link beam is on a first axis located at a position shifted from a position of the first torsion axis to one end side of the first detection frame along a direction crossing the first torsion axis. The second link beam is on a second axis located at a position shifted from a position of the second torsion axis in a direction identical to the direction of shift from the position of the first torsion axis. | 2011-02-10 |
20110031960 | Calibratable Multidimensional Magnetic Point Sensor - A calibratable magnetic field sensor for sensing a first and a second spatial component of a magnetic field in a reference point, wherein the magnetic field includes a first and a second measurement field component and/or a first and a second calibration field component. The magnetic filed sensor includes a first sensor element arrangement including at least a first and a second sensor element for sensing the first magnetic field component, which includes a first measurement field component and/or a first calibration field component, with respect to a first spatial axis in the reference point. Furthermore, the magnetic field sensor includes a second sensor element arrangement for sensing the second magnetic field component, which includes a second measurement field component and/or a second calibration field component, with respect to a second spatial axis in the reference point. The magnetic filed sensor also includes an excitation line arranged with respect to the first sensor element arrangement so that, when impressing a default current into the excitation line, a pair of different asymmetrical default calibration field components in the first sensor element and in the second sensor element is generated with respect to the first spatial axis in the first sensor element arrangement, wherein the two spatial axes pass along linearly independent position vectors. | 2011-02-10 |
20110031961 | ENDOTRACHEAL TUBE SENSOR - Various devices and methods for locating an object using magnetic fields are provided. In one embodiment, a device is provided having a housing with an array of sensors that can measure a magnetic field of an object and calculate a three dimensional location of the object based upon the measured magnetic field. A display device for displaying the three dimensional location of the object can also be included. In one exemplary embodiment, an implantable device, such as an endotracheal tube, is provided having the object embedded therein. The array of sensors can be used to measure the magnetic field of the object. The device can then calculate the three dimensional location of the object and the display device can display the calculated location of the object embedded in the implantable device. | 2011-02-10 |
20110031962 | MAGNETIC POLE POSITION DETECTING DEVICE AND METHOD - A magnetic pole position detecting device that can correctly acquire a magnetic pole position even if two magnetic sensors are arranged at an arbitrary interval receives sensor outputs “a” and “b” of two magnetic sensors arranged at a predetermined interval L along a magnetic pole arraying direction motor and a phase difference φ between the two sensor outputs “a” and “b”. When sin φ>δ, the device divides a·sin φ by b−a·cos φ to calculate tan θ and outputs a magnetic pole position θ=tan | 2011-02-10 |
20110031963 | INDUCTIVE SENSOR FOR SPEED, ROTATIONAL DIRECTION AND POSITION MEASUREMENTS IN THE HIGH TEMPERATURE RANGE - An inductive sensor with coils arranged substantially in layers on a flat circuit-carrier. The edges of the flat circuit-carrier are metallized obliquely so that an upper side, a lower side, an intermediate layer and/or a plurality of intermediate layers of the flat circuit-carrier are interconnected with one another via the edges in a conductive manner. | 2011-02-10 |
20110031964 | Magnetic sensor for an elevating motor - A magnetic sensor for an elevating motor, and more particularly to a magnetic sensor whose magnetic induction elements are sealed within a magnetically non-permeable minor sleeve. Meanwhile, a signal transmission line is extended therefrom. In addition, the minor sleeve and the magnetic induction elements are disposed within a gear box of the elevating motor. Since the magnetic sensor in accordance with the invention is designed in a built-in type, it is not easily affected and damaged by the external environment. As a result, the service life may be prolonged. Moreover, it is modularized for a compact structure and a practical installation. In addition, it approaches more to the rotational and magnetic pole, thereby enhancing the measuring accuracy. | 2011-02-10 |
20110031965 | Magnetic Sensor - A magnetic sensor includes a first detection unit and a second detection unit. The first detection unit calculates a first detection angle which is a detected value of a first angle that a direction of an external magnetic field in a first position forms with respect to a first direction. The second detection unit calculates a second detection angle which is a detected value of a second angle that the direction of the external magnetic field in a second position forms with respect to a second direction. The first detection angle includes a first angular error. The second detection angle includes a second angular error. The first angular error and the second angular error differ in phase by an odd number of times ½ of the error period. | 2011-02-10 |
20110031966 | NON-CONTACT TYPE TRANSDUCER HAVING MULTI-LOOP COIL FOR PLATE MEMBER - A non-contact type transducer having a multi-loop coil that is used to perform a modal test or a nondestructive inspection on a plate member without contacting the plate member is disclosed. The transducer includes a multi-loop coil having two or more closed loop portions and disposed above and separate from a plate member; and a magnet having a neutral plane between north (N) and south (S) poles parallel to a surface of the plate member and functioning as a static magnetic field former, wherein the plate member is formed of a conductor, wherein an eddy current that flows on a surface of the plate member is generated by controlling a current that flows through the multi-loop coil, and Lorentz forces are applied in directions perpendicular to the surface of the plate member due to the eddy current and a magnetic field component parallel to the surface of the plate member of a static magnetic field formed by the static magnetic field former. | 2011-02-10 |
20110031967 | NONDESTRUCTIVE INSPECTION APPARATUS USING SQUID MAGNETIC SENSOR - There is provided a nondestructive inspection apparatus using a SQUID magnetic sensor which allows nondestructive and accurate detection of magnetic particles in an insulator such as an electronic device or in a magnetizable member. | 2011-02-10 |
20110031968 | Three axis field monitor - The gauss meter devices of the present invention are small, low power 3 axis field monitor board which detects DC to slow varying magnetic fields. The unit is designed to be embedded into a system which may be sensitive to magnetic fields and needs to continuously measure the magnitude of the field around it. The unit continuously monitors and logs magnetic fields on X, Y and Z axes and it also logs the vector summation of the X, Y and Z axes. The unit may be controlled and queried by wired serial communication means or by means of an integrated radio frequency (RF) transceiver. The RF transceiver may utilize a proprietary communication protocol or a standard wireless communication protocol such as ZigBee, Bluetooth or any of the IEEE communications standards. The many configuration settings of the device may be changed by the user by issuing commands to the device from an established command set. Novel use is made of solid state electronics to calibrate the unit digitally instead of by the traditional use of mechanical potentiometers, physical trimming of resistors and so forth. Therefore, the units may be calibrated by an automated system. All calibration and configuration data is stored in nonvolatile memory. | 2011-02-10 |
20110031969 | ATOMIC MAGNETOMETER AND METHOD OF SENSING MAGNETIC FIELDS - A magnetometer and method of use is presently disclosed. The magnetometer has at least one sensor void of extraneous metallic components, electrical contacts and electrically conducting pathways. The sensor contains an active material vapor, such as an alkali vapor, that alters at least one measurable parameter of light passing therethrough, when in a magnetic field. The sensor may have an absorptive material configured to absorb laser light and thereby activate or heat the active material vapor. | 2011-02-10 |
20110031970 | Magnetic Resonance Imaging Apparatus - The present invention provides a vertical magnetic field MRI apparatus which is capable of speeding up imaging for taking an image of any cross section of a wide area such as a total body, while suppressing increase of the number of channels and maintaining high sensitivity in a deep portion of a subject. A receiver coil unit | 2011-02-10 |
20110031971 | CONTRAST AGENT-FREE MR ANGIOGRAPHY WITH SSFP SEQUENCES - In a method to generate an MR angiography image of an examination region of a subject without the use of contrast agent, a first MR image of the examination region is acquired with a first imaging sequence in which a gradient-induced phase development for unmoved and moved spins is essentially completely rephased at the end of a repetition interval TR, and a second MR image of the examination region is acquired with a second imaging sequence in which the gradient-induced phase development for unmoved spins is likewise essentially completely rephased at the end of the repetition interval TR and a rest phase φ | 2011-02-10 |
20110031972 | METHOD AND SYSTEM OF DETERMINING AN ELECTRICAL PROPERTY OF A FORMATION FLUID - Determining an electrical property of a formation fluid. At least some of the illustrative embodiments are methods comprising drawing formation fluids into a tool within a borehole, applying a swept frequency electric field to the formation fluids by way of a first winding, inducing a current flow in a second winding based on the swept frequency electric field, and determining a property of the formation fluids based, at least in part, on the current flow in the second winding. | 2011-02-10 |
20110031973 | GEOPHYSICAL MEASUREMENT DEVICE FOR NATURAL SOIL RESOURCE EXPLORATION IN AQUATIC ENVIRONMENT - A geophysical measurement device is provided for exploration of natural resources of the floor in an aquatic domain. The device includes a frame designed to rest in a stable manner on the floor of the aquatic environment, at least one buoyancy caisson resting on the frame, measurement instruments. The measurement instruments including: at least one sensor making it possible to measure locally at least one of the components of the magnetic field; an analogue and/or digital data acquisition and processing device; and a source of energy supply of the sensor and of the data acquisition and processing device. The at least one sensor is contained inside the buoyancy caisson. | 2011-02-10 |
20110031974 | Method and System to Measure Series-Connected Cell Voltages using a Flying Capacitor - A method and system for measuring voltage of individual cells connected in series includes a pair of busses connectable to the cells and a flying capacitor connectable to the busses. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the capacitor may process an accurate representation of the voltage of the cell being measured. In order to prevent electrical interference with the capacitor and the ADC, the charge on the busses is reduced prior to measurement by the ADC | 2011-02-10 |
20110031975 | Battery-Driven Power Tool and Battery Pack Therefor - A battery pack includes a chargeable battery, a battery voltage detecting section, and a determining section. The battery voltage detecting section is configured to detect a battery voltage output from the rechargeable battery. The determining section is configured to determine a voltage level status of the rechargeable battery based on the battery voltage detected by the battery voltage detecting section. The determining section is free from determining the voltage level status when a rate of change in the battery voltage is equal to or greater than a predetermined criteria. Such a battery pack is used for a power tool. | 2011-02-10 |
20110031976 | VOLTAGE MEASURING APPARATUS FOR ASSEMBLED BATTERY - A voltage measuring apparatus measures an output voltage of an assembled battery in which a plurality of unit cells are connected in series and are divided into a plurality of blocks. The apparatus includes: a block voltage detection section which detects a voltage of at least one of the plurality of blocks and provides an analog voltage signal; a reference power supply which generates a reference voltage; a sampling voltage generation section which generates a sampling voltage based on the reference voltage; a storage for storing voltage date corresponding to the sampling voltage; and an A/D conversion section of the block voltage detection section that digitizes the sampling voltage with the reference voltage for A/D conversion. A difference between the digitized sampling voltage and the voltage data is calculated and it is determined that abnormality occurs in the A/D conversion section when the difference is larger than a threshold. | 2011-02-10 |
20110031977 | SYSTEM AND METHOD FOR LOCATING LINE FAULTS IN A MEDIUM VOLTAGE NETWORK - This invention relates to a method and system for locating line faults in a medium voltage network ( | 2011-02-10 |
20110031978 | APPARATUS AND METHOD FOR RECOGNIZING AN ERROR IN A POWER BRIDGE CIRCUIT - An apparatus and a method for recognizing an error in a power bridge circuit containing a load, a high-side branch and a low-side branch. Accordingly, a first switched current source is connected to the load and to a diagnosis connection for a high-potential of a diagnosis voltage, a second switched current source is connected to the load and to a diagnosis connection for a low-potential of the diagnosis voltage, and a control device for controlling the first switched current source and the second switched current source. The control device is configured so that it switches on one of the switched current sources when the high-side power switch and the low-side power switch are open, while the other switched current source is switched off. A testing device is provided to test a voltage at the load when one of the switched current sources is switched on and the other of the switched current sources is switched off. | 2011-02-10 |
20110031979 | IGNITION SYSTEM OPEN SECONDARY DETECTION - This document discusses, among other things, a system and method for detecting an open secondary condition in a secondary coil of an ignition coil using a control signal received from a control input of a switch configured to control the flow of current to a primary coil of the ignition coil. In an example, the flow of current in the primary coil of the ignition coil can be controlled using an insulated gate bipolar junction transistor (IGBT), and the open secondary condition in the secondary coil of the ignition coil can be detected using a received gate voltage of the IGBT. | 2011-02-10 |
20110031980 | SYSTEM FOR MONITORING A TRANSFORMER - This invention concerns a system for monitoring a transformer which comprises multiple terminals. The system includes multiple measuring devices and a transformer monitoring device. Each measuring device is arranged adjacently to a terminal of the transformer. Each measuring device includes a housing, a processing unit, a terminal to connect the processing unit to a sensing means to sense an electrical magnitude at the terminal of the transformer, and a data transmission terminal to transmit data between the processing unit and the transformer monitoring device. The transformer monitoring device, which is connected to the multiple measuring devices, is designed to determine, from a combination of the data from the multiple measuring devices, a present state of the transformer. | 2011-02-10 |
20110031981 | VALUATION METHOD OF DIELECTRIC BREAKDOWN LIFETIME OF GATE INSULATING FILM, VALUATION DEVICE OF DIELECTRIC BREAKDOWN LIFETIME OF GATE INSULATING FILM AND PROGRAM FOR EVALUATING DIELECTRIC BREAKDOWN LIFETIME OF GATE INSULATING FILM - A valuation method of a dielectric breakdown lifetime of a gate insulating film for evaluating the dielectric breakdown lifetime of the gate insulating film of a MOS type element includes the steps of: deciding a Weibull slope of lifetime distribution until reaching a soft breakdown of the gate insulating film of the MOS type element; deciding a detection condition of the soft breakdown from the decided Weibull slope after the above step; and executing a dielectric breakdown test by using the decided detection condition. | 2011-02-10 |
20110031982 | Tamper-resistant electronic circuit and module incorporating electrically conductive nano-structures - A device and method are disclosed comprising one or more electrically conductive nano-structures defined on one or more surfaces of a microelectronic circuit such as an integrated circuit die, microelectronic circuit package (such as a TSOP, BGA or other prepackaged IC) a stacked microelectronic circuit package, or on the surface of one or more layers in a stack of layers containing one or more ICs. | 2011-02-10 |
20110031983 | ORGANIC CHEMICAL SENSOR COMPRISING PLASMA-DEPOSITED MICROPOROUS LAYER, AND METHOD OF MAKING AND USING - Applicant discloses a sensing element for sensing an organic chemical analyte, comprising a first electrode and a second electrode, and a microporous, hydrophobic, analyte-responsive dielectric material disposed at least in proximity to the first and second electrodes. The analyte-responsive dielectric material may be an amorphous random covalent network comprising a mean pore size of less than about 10 nm and a porosity of at least about 20%. An electrical property of the sensing element, such as capacitance, can be monitored in order to sense an organic chemical analyte. | 2011-02-10 |
20110031984 | TEST APPARATUS - Provided is a test apparatus that tests a device under test, comprising a power supply that generates power supplied to the device under test; a transmission path that transmits the power generated by the power supply to the device under test; a current measuring section that measures a digital waveform of load current supplied to the device under test via the transmission path, the digital waveform including a frequency component higher than a frequency corresponding to a product of an inductance component of the power supply and a capacitance component between the transmission path and a ground potential; and a judging section that judges acceptability of the device under test based on the digital waveform of the load current measured by the current measuring section. | 2011-02-10 |
20110031985 | MECHANISMS FOR DETECTING TAMPERING OF AN ELECTRONIC DEVICE - An electronic device has a chassis, and a printed wiring board (PWB) having a hole. A fastener is installed in the hole thereby securing the PWB to the chassis. A pair of conductive traces is formed in the PWB. A cap, being an amount of conductive glue, covers a part of the fastener and fills an electrically insulating gap between the two traces, to thereby form a conductive path that connects the two traces. A sensing circuit is coupled to the traces, to detect a change in impedance of the path and signal a tamper event alert. Other embodiments are also described and claimed. | 2011-02-10 |
20110031986 | Sub-Threshold Capfet Sensor for Sensing Analyte, A Method and System Thereof - The present invention relates to high sensitivity chemical sensors, more particularly relates to high sensitivity chemical sensors which are capacitively coupled, FET based analyte sensors. A sub-threshold capacitively coupled Field Effect Transistor (CapFET) sensor for sensing an analyte comprises fixed dielectric placed on substrate of the CapFET and second dielectric sensitive to the analyte, placed between gate terminal of the CapFET and the fixed dielectric, wherein presence of the analyte alters either dielectric constant of the second dielectric or work function of the gate. | 2011-02-10 |
20110031987 | SYSTEM RESISTANCE SIMULATING APPARATUS - A system resistance simulating apparatus includes a case and a resistance adjusting element arranged in the case. The resistance adjusting element includes a number of blocking strips. The blocking strips can be selectively poisoned in the case for simulating system resistance of an electronic device at different power platforms. | 2011-02-10 |
20110031988 | REDUCING SIGNAL DISTORTIONS - The invention relates to reducing signal distortions occurring when a potential is applied to an electrochemical cell. Electrochemical measurements are obtained in the presence of a specific chemical entity which is an aminoglycoside, an organic polyamine and/or a substance capable of raising the ionic strength of the sample. | 2011-02-10 |
20110031989 | CONTROL METHOD FOR AN INDUCTION APPARATUS, AND INDUCTION APPARATUS - A method for controlling an induction apparatus having an induction coil. In one implementation the induction apparatus includes a capacitor that is connected in parallel with the induction coil to form a parallel resonant circuit, and also includes a switch connected in series with the parallel resonant circuit, between the parallel resonant circuit and a reference voltage. According to one method, a digital test signal dependent on the voltage in a node disposed between the switch and the parallel resonant circuit is generated, the switch is closed for a predetermined closure time and then reopened at the end of the closure time. With the switch reopened, the test signal is evaluated for a predetermined waiting time in order to determine the presence or absence of a vessel on the induction coil. | 2011-02-10 |
20110031990 | Socketless Integrated Circuit Contact Connector - A socketless integrated circuit (IC) contact connector is provided with an electrically conductive support post. An electrically conductive spring has a first end connected to the post, and a second end. An electrically conductive first wire has a first end connected to the spring second end, and a second end. An electrically conductive loop with a loop neck is connected to the first wire second end. Typically, the loop is formed in the first wire second end. The spring and loop work in cooperation to engage an IC contact. | 2011-02-10 |
20110031991 | PROBE BLOCK - A probe block mounted on a probe card is provided for achieving fine pitch probes. A probe block for a probe card of a semiconductor test device according to the present invention includes a guide member and a probe. A guide member includes pairs of upper and lower holes and middle holes each interconnecting the upper and lower holes of each pair. A probe includes a first pin tip protruded through a corresponding upper hole for contacting a pad of a device to be tested and a second pin tip protruded through a corresponding lower hole for transferring an electrical signal to the device and a bridge part situated within the middle hole for interconnecting the first and second pin tips. The upper, lower, and middle holes allow the probe to elastically moves in vertical direction. The probe block of the present invention is advantageous in that the probes are supported by guide members so as not to be bent while maintaining a fine pitch. Also, the probe block of the present invention is advantageous in fabrication and repair since probes are elastically contacted rather than directly bonded to the circuit substrate of the probe card. | 2011-02-10 |
20110031992 | TESTER AND SEMICONDUCTOR DEVICE TEST APPARATUS HAVING THE SAME - Provided are a tester and a semiconductor device test apparatus having the tester. The tester includes a tested head configured to transfer electronic signals to a probe card. The tester also includes a leveling unit is provided on the tester head. The leveling unit is configured to apply a load to the probe card to maintain a level state of the probe card. | 2011-02-10 |
20110031993 | Curve Tracer Signal Conversion for Integrated Circuit Testing - A curve tracer signal conversion device is provided. The signal conversion device has an input connected to the curve tracer base port to accept a repeating sequence of stepped base signals. The conversion device has a signal input connected to either the curve tracer collector or emitter port, typically the collector. The conversion device has a plurality of signal outputs, where each signal output is sequentially connected to the selected (i.e. collector) curve tracer port in response to a corresponding base step signal. The signals outputs may be provided to a test fixture, for testing a multi-pin integrated circuit (IC). | 2011-02-10 |
20110031994 | ARCHITECTURE FOR LOCAL PROGRAMMING OF QUANTUM PROCESSOR ELEMENTS USING LATCHING QUBITS - An architecture for a quantum processor may include a set of superconducting flux qubits operated as computation qubits and a set of superconducting flux qubits operated as latching qubits. Latching qubits may include a first closed superconducting loop with serially coupled superconducting inductors, interrupted by a split junction loop with at least two Josephson junctions; and a clock signal input structure configured to couple clock signals to the split junction loop. Flux-based superconducting shift registers may be formed from latching qubits and sets of dummy latching qubits. The devices may include clock lines to clock signals to latch the latching qubits. Thus, latching qubits may be used to program and configure computation qubits in a quantum processor. | 2011-02-10 |
20110031995 | SEMICONDUCTOR INTEGRATED CIRCUIT AND METHOD OF TESTING CIRCUIT - A semiconductor integrated circuit includes: a ladder resistor; a ROM decoder; and a test circuit. The ladder resistor includes a plurality of resistors series-connected to each other and is supplied with a correction voltage at least one of both ends of the series connection and a plurality of connection points in the series connection to generate a plurality of gradation voltages at the plurality of connection points. The ROM decoder selects one of the plurality of gradation voltages generated by the ladder resistor, based on a supplied data signal. The test circuit measures a leakage current in the ROM decoder. The test circuit includes: a plurality of separation units, and a control unit. The plurality of separation units separates the series connection, which is respectively supplied with different power source voltages at both ends, at a certain portion, when the leakage current is measured. The control unit controls separation of the plurality of separation unit corresponding to the data signal. | 2011-02-10 |
20110031996 | LOW-JITTER HIGH-FREQUENCY CLOCK CHANNE - According to one general aspect, an apparatus may include a clock channel, a shielding tunnel, and clock repeaters. In various embodiments, the clock channel may be configured to carry the clock signal, and may include a portion of a metal layer of an integrated circuit. In some embodiments, the shielding tunnel may be configured to shield, in at least four directions, the clock channel from other signals, and may include portions of a at least three metal layers of the integrated circuit. The shielding tunnel may be connected to the positive and negative supplies in order to provide the required power for the clock repeaters. | 2011-02-10 |
20110031997 | METHOD FOR FABRICATION OF A SEMICONDUCTOR DEVICE AND STRUCTURE - A method is presented that may be used to provide a Configurable Logic device, which may be Field Programmable with volume flexibility. A method of fabricating an integrated circuit may include the steps of: providing a semiconductor substrate and forming a borderless logic array, and it may also include the step of forming a plurality of antifuse configurable interconnect circuits and/or a plurality of transistors to configure at least one antifuse. The programming transistors may be fabricated over the at least one antifuse. | 2011-02-10 |
20110031998 | CONFIGURABLE IC'S WITH LARGE CARRY CHAINS - Some embodiments provide a configurable IC that includes several configurable logic circuits, where the logic circuits include several sets of associated configurable logic circuits. For each several sets of associated configurable logic circuits, the reconfigurable IC also includes a carry circuit for performing up to N carry operations sequentially, wherein N is greater than two. | 2011-02-10 |
20110031999 | PROGRAMMABLE LOGIC FABRIC - A programmable logic circuit comprising a plurality of programmable logic elements and a plurality of programmable interconnect means, and memory means for storing the configuration of the logic elements and interconnect means, wherein said memory means is formed and arranged to store a multiplicity of different configurations for each said logic element. | 2011-02-10 |
20110032000 | ULTRA-LOW POWER MULTI-THRESHOLD ASYNCHRONOUS CIRCUIT DESIGN - A Multi-Threshold CMOS NULL Convention Logic asynchronous circuit (MTNCL). The MTNCL circuit provides delay-insensitive logic operation with significant leakage power and active energy reduction. The MTNCL circuit is also capable of functioning properly under extreme supply voltage scaling down to the sub-threshold region for further power reduction. Four MTNCL architectures and four MTNCL threshold gate designs offer an asynchronous logic design methodology for glitch-free, ultra-low power, and faster circuits without area overhead. | 2011-02-10 |
20110032001 | TEMPERATURE DETECTION CIRCUIT - According to one embodiment, a temperature detection circuit is provided which requires only a small number of additional components, thus minimizing an increase in costs and which offers an insulating property and high responsiveness. A temperature detection circuit outputs a first PWM signal corresponding to a temperature of a first temperature sensor from a photointerrupter as a signal insulated from the first temperature sensor. A temperature detection circuit outputs a second PWM signal corresponding to a temperature of a second temperature sensor from a photointerrupter as a signal insulated from the second temperature sensor. A controlling arithmetic apparatus calculates a higher one of the temperatures detected by the first and second temperature sensors based on the PWM signals output from the photointerrupter. | 2011-02-10 |
20110032002 | DEVICES AND METHODS FOR A THRESHOLD VOLTAGE DIFFERENCE COMPENSATED SENSE AMPLIFIER - Embodiments are described for a voltage compensated sense amplifier. One such sense amplifier includes a pair of digit line nodes respectively coupled to a pair of transistors. A first pair of switches are adapted to cross-couple the gates of the transistors to the respective digit line node and a second pair of switches are adapted to couple the gates of the transistors to a voltage supply. The first and second pair of switches are coupled to respective gates of the transistors independent of the pair of transistors being respectively coupled to the digit line nodes. | 2011-02-10 |
20110032003 | OFFSET CANCELLATION FOR SAMPLED-DATA CITCUITS - A comparator based circuit with effective offset cancellation includes first and second amplifiers and an offset capacitor operatively connected to the first and second amplifiers. An offset voltage source generates an offset voltage. A first switch connects the offset voltage source to ground during a first time period. The first amplifier generates an output voltage in response to the first switch connecting the offset voltage source to ground during the first time period. A second switch connects the offset capacitor to ground during a second time period. The first switch disconnects the offset voltage source from ground during a third time period, and the second switch disconnects the offset capacitor from ground during the third time period. | 2011-02-10 |
20110032004 | Light-receving circuit and semiconductor device having same - A light-receiving circuit includes a photodiode that converts an input optical signal to a current signal; a current-voltage converting circuit that outputs an output voltage signal obtained by adding a reference voltage to a voltage signal proportional to the current value of the current signal; and an input current limiting unit that supplies the current-voltage converting circuit with the current signal upon limiting the current value of this current signal based upon the reference voltage in such a manner that the output voltage signal will not exceed a constant value irrespective of the value of the reference voltage. | 2011-02-10 |
20110032005 | Frequency synthesizer - A frequency synthesizer in which a satisfactory frequency stability can be obtained over the entire long period of service immediately after power activation is disclosed. The reference signal generation circuit includes an OCXO, a TCXO, weight converters which regulate weights with respect to outputs, and an adder which adds up the outputs from the weight converters to output the added output as a reference signal. The CPU controls weight converters B and C so that the weight of the TCXO is set to 100% and the weight of the OCXO is set to 0% at the time of the power activation, so that the weight of the OCXO gradually rises, and so that the weight of the TCXO is set to 0% and the weight of the OCXO is set to 100% after preset time, whereby the frequency can quickly be stabilized after the power activation. | 2011-02-10 |
20110032006 | BI-DIRECTIONAL CHANNEL AMPLIFIER - An AUX channel amplifier for amplifying data in the AUX channel of a Display Port device. In some embodiments, the amplifier includes a first amplifier coupled to amplify a signal from a source to a sink and a second amplifier coupled to amplify a signal from the sink to the source. A slicer can be utilized to digitize the signal from the source. In some embodiments, a clock and data recovery can be utilized to receive signals from the source and a second clock and data recovery can be utilized to receive signals from the sink. A controller determine the direction of data flow and enables the first amplifier or the second amplifier accordingly. | 2011-02-10 |
20110032007 | Buffer-driving circuit capable of increasing responding speed and prolonging lifespan, buffer, and method thereof - A method for increasing responding speed and lifespan of a buffer includes detecting an edge of an input signal of the buffer, triggering a pulse signal with a predetermined period according to the detected edge, and driving the buffer for generating an output signal according to the pulse signal and the input signal. | 2011-02-10 |
20110032008 | PULSE WIDTH MODULATION FREQUENCY CONVERSION - A pulse width modulation (PWM) frequency converter converts an input PWM signal to an output PWM signal having a different frequency while maintaining a substantially equal duty ratio. The PWM frequency converter samples the input PWM signal for a PWM cycle using a sampling clock. A filter module filters the resulting set of one or more PWM parameters to compensate for noise introduced by potential clock mismatch, clock jitter, ambient variations, and other non-deterministic issues, thereby generating filtered PWM parameters. The sampling employed by the filter module compares a difference between the one or more current PWM parameters and previous (or historical) PWM parameters from an earlier sampled PWM cycle to a predetermined change threshold in determining a filtered set of one or more PWM parameters. The filtered set of one or more PWM parameters then is used to generate one or more corresponding PWM cycles of the output signal. | 2011-02-10 |
20110032009 | DELAY LOCKED LOOP CIRCUIT - A delay locked loop circuit comprising a VCDL which outputs a feedback clock by delaying an input clock in accordance with a magnitude of a control voltage, a phase comparator which detects a phase difference between the feedback clock and a reference clock by comparing the feedback clock with the reference clock, and outputs an Up-signal for raising the control voltage and a Down-signal for lowering the control voltage in accordance with the phase difference, a control voltage generation circuit which determines the control voltage in accordance with the Up-signal and the Down-signal, and outputs the control voltage to the VCDL, and a reset circuit which resets the phase comparator based on a logical OR between the reference clock and a first intermediate clock which is a signal obtained by delaying the input clock by the VCDL and is output before the feedback clock. | 2011-02-10 |
20110032010 | POWER UP SIGNAL GENERATION CIRCUIT AND METHOD FOR GENERATING POWER UP SIGNAL - A power up signal generation circuit transits a power up signal at a predetermined target voltage level by providing a predetermined hysteresis characteristic to the target voltage level of a power supply voltage corresponding to the power up signal. The power up signal generation circuit includes a first voltage detection unit that detects a first target voltage level of a power supply voltage to output a detection signal. The circuit also includes a second voltage detection unit that detects a second target voltage level of the power supply voltage in response to a power up signal to output a control signal, wherein the second target voltage level is lower than the first target voltage level. A power up signal drive unit of the circuit activates the power up signal in response to the detection signal and drives the power up signal in response to the control signal. | 2011-02-10 |
20110032011 | AUTO FREQUENCY CALIBRATOR, METHOD THEREOF AND FREQUENCY SYNTHESIZER USING IT - The present invention relates to and auto frequency calibrator, a method thereof, and a frequency synthesizer using it. The auto frequency calibrator includes a capacitor bank selector that is operated as an open loop and compares a frequency signal having integer-divided reference frequency with the reference frequency signal to select a capacitor bank corresponding to an output frequency; and a capacitor bank controller that is operated as a closed loop when the capacitor bank is selected and compares the output voltage corresponding to the output frequency with a preset voltage range to control the capacitor bank selected in the capacitor bank selector. | 2011-02-10 |
20110032012 | PHASE-LOCKED LOOP CIRCUIT - A phase-locked loop circuit includes a control loop including a frequency divider configured to frequency-divide an output clock and to control a frequency of the output clock according to a phase difference between a local clock and a phase-divided local clock; and a control unit configured to control a frequency dividing ratio of the frequency divider according to a phase difference between the output clock and an input clock that corresponds to data taken in based on the output clock. | 2011-02-10 |
20110032013 | Digital Phase-Locked Loop Clock System - A clock system includes a digital phase/frequency detector (DPFD), a buffer, a digitally-controlled oscillator (DCO) including a sigma-delta modulator (SDM), an adder, a first frequency divider. The DPFD may have a first input for a reference input clock and a second input for a feedback signal, and outputting a difference signal representing a phase and/or frequency difference between the reference input clock and the feedback signal. The buffer may be coupled to the DPFD for accumulating the difference signal over time. The sigma-delta modulator (SDM) may have a control input coupled to the buffer. The adder may have inputs coupled to the (SDM) and a source of an integer control word. The first frequency divider may have an input for a clock signal and a control input coupled to the adder, the DCO generating an output clock signal having an average frequency representing a frequency of the input clock signal divided by (N+F/M), wherein N is determined by the integer control word and F/M is determined by an output of the SDM. The system clock also may include a phase-locked loop (PLL) including a phase/frequency detector that has a first input coupled to the output of the DCO and a second input that is phase-locked to the first input, and a second frequency divider coupled from the second input of the PLL to the second input of the DPFD. | 2011-02-10 |
20110032014 | Delay locked loop circuit and signal delay method - A multiplier PLL multiplies a reference clock and outputs the multiplied clock. A DLL compares the clock output from the multiplier PLL with a clock obtained by delaying the clock output from the multiplier PLL. The DLL generates a delay signal having a given amount of delay based on the comparison result. A delay control signal operation circuit generates a delay control signal based on the delay signal generated by the DLL. A first delay circuit delays an input signal based on the delay control signal generated by the delay control signal operation circuit. | 2011-02-10 |
20110032015 | SYSTEMS AND METHODS FOR CLOCK CORRECTION - A method, apparatus and system for correcting different clock domains are disclosed. The disclosed implementations correct a second clock domain by making reference to a resampling filter, or similar device, used to correct a first clock domain. The implementations thereby facilitate clock correction using fewer or a different variety of elements. | 2011-02-10 |
20110032016 | SEMICONDUCTOR DEVICE - A semiconductor device includes a flip-flop circuit formed in a CMOS semiconductor integrated circuit. The flip-flop circuit includes at least a first clock generating inverter that generates a first clock signal and a second clock generating inverter that generates a second clock signal obtained by inverting the first clock signal, the first clock generating inverter and the second clock generating inverter are arranged so as to sandwich a latch unit, the latch unit including a master latch unit and a slave latch unit in the flip-flop circuit, the first clock generating inverter and a first other circuit in the flip-flop circuit are configured to share a source region, the first other circuit being adjacent to the first clock generating inverter, and the second clock generating inverter and a second other circuit in the flip-flop circuit are configured to share a source region, the second other circuit being adjacent to the second clock generating inverter. | 2011-02-10 |
20110032017 | SIGNAL RECEIVER AND VOLTAGE COMPENSATION METHOD - A signal receiver includes a first input terminal, a second input terminal, a first transistor, a second transistor and a variable load. The first and the second transistors each include a gate electrode, a first electrode and a second electrode. The gate electrode of the first transistor is coupled to the first input signal terminal, the gate electrode of the second transistor is coupled to the second input signal terminal, and the variable load is coupled to the first electrode of the first transistor, where a resistance of the first variable load is adjusted to make a DC level at an output node of the signal receiver keep a constant value. | 2011-02-10 |