19th week of 2012 patent applcation highlights part 21 |
Patent application number | Title | Published |
20120112716 | POWER REGULATION FOR LARGE TRANSIENT LOADS - Methods and circuits for power supply arrangement and control are disclosed herein. In one embodiment, a power supply can include: (i) an input capacitor coupled to an input terminal that is coupled to a power source, where the power source provides power that is constrained by a predetermined limit; (ii) an output capacitor coupled to an output terminal that is coupled to a load, where the load has a first load condition or a second load condition; (iii) a first regulator to convert an input voltage at the input terminal to an output voltage at the output terminal to power the load; (iv) a second regulator coupled to the first regulator; and (v) an energy storage element coupled to the second regulator, where the second regulator delivers energy from the energy storage element to the first regulator to maintain regulation of an output voltage at the output terminal when in the second load condition. | 2012-05-10 |
20120112717 | Two-Stage Power Supply with Feedback Adjusted Power Supply Rejection Ratio - The present invention discloses a power supply comprising: a switching regulator circuit converting an input voltage to an intermediate voltage; a low dropout linear regulator circuit converting the intermediate voltage to an output voltage so as to supply a load current to a load; and a feedback control circuit which increases the noise filtering effect of the low dropout linear regulator circuit when the load current increases. | 2012-05-10 |
20120112718 | Low-Dropout Regulator - The invention proposes a low-dropout voltage regulator comprising an output terminal for providing an output voltage (V | 2012-05-10 |
20120112719 | RECTIFIER CIRCUIT - A rectifier circuit includes: a switching circuit having an input end, an output terminal and a control end, wherein the input end of the switching circuit receives an input voltage; a control circuit electrically connected to the control end of the switching circuit, wherein, when a load current is smaller than a reference current, the rectifier circuit is situated at a light-load state and the control circuit reduces a switching frequency of the switching circuit; and a filtering circuit which is electrically connected between the output end of the switching circuit and an output terminal of the rectifier circuit, and includes at least one inductive component of which a current is formed by superposition of the load current and a ripple current, wherein, when the load current is smaller than the reference current, an inductance of the inductive component increases with the decrease of the load current. | 2012-05-10 |
20120112720 | SWITCHING POWER SUPPLY WITH SELF-OPTIMIZING EFFICIENCY - A switching power supply is provided that includes: input terminals for the uptake of an input power, output terminals for providing an output power, a circuit disposed between the input and output terminals for transforming the input power and having at least one controllable switch, a control unit for controlling the at least one controllable switch by means of at least one pulse-width modulation signal having variable frequency and variable duty cycle, and having measuring instruments connected to control unit, designed for at least measuring the input current intensity, the input voltage, the output current intensity, and the output voltage, wherein control unit is designed for the purpose of monitoring the efficiency of switching power supply by means of measurement values of the connected measuring instruments, and of optimizing the efficiency by controlling the at least one controllable switch by means of a first digital control loop. Also provided is a method for operating a switching power supply. | 2012-05-10 |
20120112721 | SYNTHETIC RIPPLE REGULATOR WITH FREQUENCY CONTROL - A synthetic ripple regulator including frequency control based on a reference clock. The regulator includes an error network, a ripple detector, a combiner, a ripple generator, a comparator network and a phase comparator. The error network provides an error signal indicative of relative error of the output voltage. The ripple detector provides a ramp control signal based on the input and output voltages and a pulse control signal. The combiner adjusts the ramp control signal based on a frequency compensation signal to provide an adjusted ramp control signal. The ripple generator develops a ripple control signal based on the adjusted ramp control signal. The comparator network develops the pulse control signal to control switching based on the error signal and the ripple control signal. The phase comparator compares the pulse control signal with the reference clock and provides the frequency compensation signal. | 2012-05-10 |
20120112722 | POWER SUPPLY CIRCUIT - A power supply circuit includes a first-stage circuit and a second-stage circuit. The first-stage circuit is used for converting an input voltage into a DC voltage. The second-stage circuit includes a main power conversion circuit for converting the DC voltage into a first output voltage, a first standby power conversion circuit for converting the DC voltage into a second output voltage, a feedback circuit for generating a feedback signal, a second standby power conversion circuit and a power distribution circuit. The magnitude of the second output voltage is adjusted by the first standby power conversion circuit according to the feedback signal. The second standby power conversion circuit is used for converting the first output voltage or the second output voltage into a standby voltage. The power distribution circuit is used for selectively delivering the first output voltage or the second output voltage to the second standby power conversion circuit. | 2012-05-10 |
20120112723 | Loosely Regulated Feedback Control for High Efficiency Isolated DC-DC Converters - The improved DC-DC converter apparatus includes a primary side circuit and a secondary side circuit that is galvanically isolated from the primary. The primary side induces a voltage in the secondary side that provides an output voltage for driving POLs. A controller in the primary senses a reflected output voltage signal that is coupled from the secondary and is proportional to the secondary output voltage with respect to a voltage regulation point determined by either a voltage divider circuit or the zener voltage in the secondary. The voltage regulation point is established by wide-tolerance electrical components, such as a zener diode, a resistor, or a combination, connected in the coupling device circuit. | 2012-05-10 |
20120112724 | CHARGE PUMP CIRCUIT AND OPERATION CONTROL METHOD THEREOF - A charge pump circuit which steps down an input voltage inputted from an input terminal and outputs it as a step-down output voltage from a step-down output terminal, and steps up the input voltage and outputs it as a step-up output voltage from a step-up output terminal, includes: a voltage conversion circuit having a flying capacitor, a step-down output capacitor, a step-up output capacitor, and a plurality of switches, wherein the flying capacitor, the step-down output capacitor, the step-up output capacitor, and the switches are connected, and the voltage conversion circuit is capable of switching connection states by switching each on/off state of the switches; an output voltage detection circuit unit which makes a comparison of a voltage between the step-down output voltage and a first predetermined voltage, and makes a comparison of a voltage between the step-up output voltage and a second predetermined voltage, and produces and outputs each signal indicating each result of the comparisons; and a control circuit unit which performs a switching control depending on each signal outputted from the output voltage detection circuit unit. | 2012-05-10 |
20120112725 | Circuit and Method for Voltage Regulator Output Voltage Trimming - The present disclosure discloses a voltage regulator comprising a trimming circuit. The present disclosure also discloses a method for trimming an output voltage of a voltage regulator. In one embodiment the voltage regulator may comprise a power conversion module, a feedback and trimming module and a control module. The voltage regulator may be able to provide an output voltage that could be regulated to a plurality of output values, the feedback and trimming module may be able to trim the plurality of output values to their desired values successively and independently. | 2012-05-10 |
20120112726 | POWER SUPPLY CONTROLLER - A power supply controller includes a power supply section, a power supply controlling section connected to the power supply section, a starter switch being switched selectively to a first status and a second status, a o power switch being switched selectively to a first status and a second status, a controlling section connected to the power switch, and a function section operable to execute a predetermined operation. The power supply controlling section causes a power to be supplied from the power supply section to the controlling section when at least one of the power switch and the starter switch is in the first status. This power supply controller does not malfunction even when the starter switch malfunctions, thus preventing wasteful consumption of the power supply section. | 2012-05-10 |
20120112727 | ELECTRIC CURRENT MEASURING DEVICE, ELECTRIC CURRENT MEASURING METHOD, AND ELECTRIC CURRENT MEASURING PROGRAM - A current measurement device has a rectification unit rectifying an alternating-current signal, an A/D conversion unit converting an analog signal corresponding to a signal obtained by the rectification into a digital signal, an addition unit for adding digital signals corresponding to alternating-current signals during a sampling period among the digital signals obtained by the conversion, and a current value conversion unit for converting an additional value obtained by the addition by the addition unit into a current value using a current value conversion function. The sampling period is a common multiple of the periods of alternating-current signals of 50 Hz and 60 Hz, the current values of which are to be measured. | 2012-05-10 |
20120112728 | REDUCED PARTS COUNT ISOLATED AC CURRENT SWITCHING AND SENSING - An appliance's control and sensing circuit selectively applies AC electrical power to a load ( | 2012-05-10 |
20120112729 | IN-RUSH LIMITER CIRCUIT FOR A DRIVER MODULE - A limiter circuit includes a voltage rail having an input and an output, the input receiving an applied input voltage, a switching device in electrical communication with the voltage rail to selective control an electric current flowing through the output of the voltage rail, limiter capacitor in electrical communication with the input of the voltage rail and the switching device, wherein the limiter capacitor and the switching device are in parallel electrical communication between the input and an electrical ground, and a first resistor interposed between the limiter capacitor and the electrical ground, wherein an impedance of the resistor and the limiter capacitor define a time constant for the charging the limiter capacitor, and wherein the time constant of the limiter capacitor controls a voltage applied to the switching device and a current flowing through the output of the voltage rail. | 2012-05-10 |
20120112730 | ARRANGEMENT OF A STEPPING SWITCH ON A CONTROL TRANSFORMER - The invention relates to the arrangement of a stepping switch on a control transformer, wherein either only the mechanical contact system ( | 2012-05-10 |
20120112731 | LOAD SENSING HIGH EFFICIENCY TRANSFORMER ASSEMBLY - A load sensing, high efficiency, modular transformer assembly for use in power distribution networks. The control of each module of the modular assembly of high efficiency transformers results in considerable energy savings when compared to conventional transformers. At least two of the transformers have different efficiencies, one higher than the other, The assembly is controlled according to the requirements of the connected load, with modules being switched in and out of circuit, thereby resulting in a transformer with a higher efficiency than is possible with currently available distribution transformers of equivalent capacity. Connection and disconnection of the transformer modules is accomplished with the use of a purpose designed electronic controller. | 2012-05-10 |
20120112732 | Capacitive Impedance Decoupling AC Power Controller - A capacitive impedance decoupling AC power controller comprising, a plurality of zero loss capacitors | 2012-05-10 |
20120112733 | Hall Effect Device - A Hall effect device includes a Hall element and a voltage regulator. The Hall element has first and second bias terminals, or nodes. The Hall effect device maintains, or regulates, a voltage at a point within the Hall element between the first and second bias terminals at about a constant voltage level, while generating a Hall effect voltage. In particular embodiments, the Hall effect voltage is, thus, prevented from substantially varying with the temperature of the Hall element. | 2012-05-10 |
20120112734 | NETWORK SWITCH CONNECTED TO A SENSOR - A system comprises a rack and a network switch contained in the rack. The switch comprises a plurality of ports. The system further comprises a movable access mechanism in the rack and a sensor. The sensor is provided on the rack and electrically connects to a port on the network switch. The sensor detects when the movable access mechanism is moved. | 2012-05-10 |
20120112735 | Electronic Apparatus and Method of Calculating Input Power Value of Power Supply Unit in Electronic Apparatus - According to one embodiment, an electronic apparatus includes a power supply unit, a current value calculator, and an input power value calculator. The current value calculator is configured to calculate a current value on a power supply cable led out from the power supply unit based on a voltage between two ends of the power supply cable and a resistance value of the power supply cable. The input power value calculator is configured to calculate an input power value of the power supply unit based on the current value on the power supply cable calculated by the current value calculator and an input/output characteristic (efficiency) of the power supply unit. | 2012-05-10 |
20120112736 | APPARATUS AND METHOD FOR TESTING DRIVER WRITEABILITY STRENGTH ON AN INTEGRATED CIRCUIT - An apparatus and method for testing driver write-ability strength on an integrated circuit includes one or more drive detection units each including a number of drivers. At least some of the drivers may have a different drive strength and each may drive a voltage onto a respective driver output line. Each drive detection unit may include a number of keeper circuits, each coupled to a separate output line and configured to retain a given voltage on the output line to which it is coupled. Each detection unit may also include a number of detection circuits coupled to detect the drive voltage on each of the output lines. In one implementation, the drive voltage appearing at the output line of each driver may be indicative of that the driver was able to overdrive the voltage being retained on the output line to which it is coupled by the respective keeper circuits. | 2012-05-10 |
20120112737 | IC CURRENT MEASURING APPARATUS AND IC CURRENT MEASURING ADAPTER - Provided is an IC current measuring apparatus provided between an IC and a substrate. The IC current measuring apparatus electrically connects each of a plurality of IC-facing terminals and a different one of a plurality of substrate-facing terminals. Especially, resistances are each inserted into a path between an IC terminal targeted for measurement and a substrate terminal corresponding thereto. Furthermore, the IC current measuring apparatus is provided with terminals each used to measure a voltage between both ends of an inserted resistance corresponding thereto. Accordingly, a measurer who measures current flowing through an IC-facing terminal can measure the current flowing through the IC-facing terminal by providing the IC current measuring apparatus between the IC targeted for measurement and the substrate and measuring a voltage between both ends of an inserted resistance corresponding to the IC terminal through which current he/she wishes to measure flows. | 2012-05-10 |
20120112738 | Sensors for Integrated Monitoring and Mitigation of Scour - Systems and methods for detecting scour. Some embodiments provide systems which include a sensor and a signal generator with a combined density equal to or greater than that of water. Optionally, the sensor can be a magnet, magnetic resonator, or accelerometer. In some embodiments, the sensor is adapted to be placed in regions potentially subject to scour and to sense a scour-related condition. The signal generator generates a wireless signal conveying data regarding the as-sensed scour-related. In some embodiments the sensor is the signal generator while a receiver of the wireless signal can include an antenna, a magnetometer, or an ultrasonic sensor. In some embodiments, the housing is conic and the magnetic object is offset from the center of gravity of the coupled sensor, signal generator and housing. | 2012-05-10 |
20120112739 | Derailleur Cable Detecting Assembly For An Electric-Auxiliary Bicycle - A derailleur cable detecting assembly for an electric-auxiliary bicycle has a body and a detecting device. The body is mounted on a frame of the electric-auxiliary bicycle, is connected to a derailleur cable and has a casing and a cover. The casing has a chamber and a through hole. The cover is detachably mounted on the casing to mount a cable wire of the derailleur cable in the body. The detecting device is mounted in the body, is connected to the derailleur cable and has a circuit board and a magnetic element. The circuit board is mounted in the chamber of the casing, faces the cable wire and has an electric wire and multiple magnetic sensors. The magnetic sensors are mounted on the circuit board at intervals. The magnetic element is mounted on the cable wire between the casing and the cover, facing the magnetic sensors of the circuit board. | 2012-05-10 |
20120112740 | HALL DEVICE MODULE EQUIPPED WITH INTERCONNECTED DOUBLE HALL DEVICES - There is provided a hall device module equipped with interconnected double hall devices. The hall device module includes: a first hall device having a first pair of terminals for excitation and a pair of output terminals; and a second hall device having a second pair of terminals for excitation and a pair of output terminals, wherein the first and second hall devices have the same equivalent circuit, the second hall device is disposed to be rotated by a predetermined angle based on the first hall device, a first terminal of the first pair of terminals is interconnected to a first terminal of the second pair of terminals to receive driving power for excitation, a second terminal of the first pair of terminals is interconnected to a second terminal of the second pair of terminals and is grounded, terminals outputting a positive component, which is a voltage rising according to an applied external magnetic field, among the pair of output terminals of the first hall device and the pair of output terminals of the second hall device, are interconnected, and terminals outputting a negative component, which is a voltage falling according to the applied external magnetic field, are interconnected, to thereby remove an offset. | 2012-05-10 |
20120112741 | METHOD FOR PRODUCING MAGNETORESISTIVE EFFECT ELEMENT, MAGNETIC SENSOR, ROTATION-ANGLE DETECTION DEVICE - To provide a method which can define the direction and orientation of magnetization of a pinned layer while reducing the number of steps of forming a GMR film. The magnetization direction of the pinned layer is defined in a plurality of directions by forming a plurality of patterns having directivities. Further, when the magneto-resistive effect film is formed, a magnetic field is applied in a direction at an angle set between the angles of the plurality of patterns. | 2012-05-10 |
20120112742 | SPEED SENSOR - A speed sensor having a sensor housing for accommodating a magnetic field sensor element, an adapter for holding the sensor housing and a magnetic encoder. The invention provides for the speed sensor to have a device for length adaptation or air gap adjustment, and for the device to have a clamping mechanism for holding the sensor housing. | 2012-05-10 |
20120112743 | T2-weighted and diffusion-weighted imaging using fast acquisition with double echo (FADE) - A method of acquiring T2-weighted and diffusion-weighted images is provided. The method includes acquiring a first image and a second image in a single magnetic resonance imaging (MRI) scan, where the first image and the second image have different echo times (TE). The single MRI scan includes a series of repeated RF excitation pulses, where the echo signal for the first image and the echo signal for the second image are acquired between a pair of RF excitation pulses. A spoiler gradient is disposed to provide a first diffusion weighting to the first image and a second diffusion weighting to the second image, where the first image and the second image have different T2 weightings and different diffusion weightings. | 2012-05-10 |
20120112744 | MICROCOIL MAGNETIC RESONANCE DETECTORS - The present invention provides microcoil magnetic resonance based modules, detection devices, and methods for their use. | 2012-05-10 |
20120112745 | MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD - In a non-Cartesian sampling method, a trajectory along which a measurement space is sampled is optimized. That is, data placed on one spiral trajectory heading outward from the center of the measurement space is sampled from a plurality of echo signals. The sampling is performed such that the data is placed continuously, without overlapping, in order from the center to the outside. Alternatively, the data may be overlapped and a mismatch between echo signals may be corrected using the data of the overlapped portion. | 2012-05-10 |
20120112746 | Coil System and Method for Post-Exposure Dosimetry Using Electron Paramagnetic Resonance Spectroscopy - An apparatus and method for triaging patients according to radiation exposure operates by measuring electron paramagnetic resonance spectra of fingernails, toenails, and/or teeth. A coil structure allows in vivo measurement of tooth enamel or fingernail keratin with reduced coupling to underlying tissue. | 2012-05-10 |
20120112747 | MRI Safety System - In a MRI system housed within a room there is provided a movable magnet and additional components for other procedures on the patient, a control system is provided for the relative movement of the magnet and components. This includes a plurality of magnetic field sensors mounted on the components for measuring the magnetic field at the location of the component and an optional camera positioning system so that the control system can estimate relative positions of the components relative to the magnet from the sensed field strengths from the set of sensors to avoid collisions during the movements. | 2012-05-10 |
20120112748 | Transceiver apparatus, system and methodology for superior In-Vivo imaging of human anatomy - The inventive subject matter as a whole is an improved transceiver apparatus and system for diagnostic evaluations of living subject, human or animal; and is particularly effective as a clinical tool for the spectroscopic scanning or magnetic resonance imaging of humans suspected of being afflicted with a particular disease, disorder, or pathology. The improved transceiver apparatus is used as an essential component in a computer controlled system suitable for magnetic resonance imaging (“MRI”), or nuclear magnetic resonance spectroscopy (“MRS”), and/or nuclear magnetic resonance spectroscopic imaging (“MRSI”); and the present improvement of these electromagnetic signaling systems will provide far more accurate and precise visual images and accumulated data for the clinician or surgeon, as well as serve as a basis upon which to make a diagnosis and decide upon a mode of therapeutic treatment for that individual. | 2012-05-10 |
20120112749 | APPARATUS AND METHOD FOR INCREASING SPIN RELAXATION TIMES FOR ALKALI ATOMS IN ALKALI VAPOR CELLS - An atomic vapor cell apparatus and method for obtaining spin polarized vapor of alkali atoms with relaxation times in excess of one minute is provided. The interior wall of the vapor cell is coated with an alkene-based material. The preferred coatings are alkenes ranging from C18 to C30 and C20-C24 are particularly preferred. These alkene coating materials, can support approximately 1,000,000 alkali-wall collisions before depolarizing an alkali atom, an improvement by roughly a factor of 100 over traditional alkane-based coatings. Further, the method involves a combination of one or more of the following: the use of a locking device to isolate the atoms in the volume of the vapor cell from the sidearm used as a reservoir for the alkali metal vapor source, careful management of magnetic-field gradients, and the use of the spin-exchange-relaxation-free (SERF) technique for suppressing spin-exchange relaxation. | 2012-05-10 |
20120112750 | APPARATUS WITH LOCAL COIL ARRANGEMENT AND IMPLANTABLE DEVICE - The present embodiments relate to an apparatus that includes a local coil for a magnetic resonance tomography system and an implantable device. | 2012-05-10 |
20120112751 | METHOD AND MAGNETIC RESONANCE SYSTEM FOR COMBINING SIGNALS ACQUIRED FROM DIFFERENT ACQUISITION COILS - In a method and magnetic resonance (MR) apparatus for combining MR signals that were acquired with different acquisition coils from a region of an examination subject at least two MR signals that are based on MR signals acquired with at least two different acquisition coils are provided to a processor. Due to the spatially differing arrangement of the respective acquisition coils, the at least two MR signals image the region of the examination subject with different sensitivity profiles. The provided MR signals are combined, such that unwanted MR signal portions are suppressed, to form a combined MR signal with the suppression of unwanted MR signal portions being implemented by MR signal portions that were acquired with an acquisition coil that detects the unwanted MR signal portions with increased sensitivity in comparison to other acquisition coils being weighted less in the combined MR signal than other MR signal portions. | 2012-05-10 |
20120112752 | COMBINING DIFFERENT ELECTROMAGNETIC DATA TO CHARACTERIZE A SUBTERRANEAN STRUCTURE - First electromagnetic data is acquired for a subterranean structure using a first survey technique, and second electromagnetic data is acquired for the subterranean structure using a second, different survey technique in which static positioning of at least one electromagnetic source is employed. The first and second electromagnetic data are combined to characterize the subterranean structure. | 2012-05-10 |
20120112753 | ELECTRODE - An electrode for enhancing electrical conductivity between an oil or gas field downhole and the surrounding formation. The electrode may serve as a cathode to cooperate with a remote anode to produce an electric field through the formation. The electrode has an electrically conductive, elongated body with a proximal end adapted to be inserted into the production pipe and a distal end adapted to project into the formation. The body of the electrode has a series of radially-projecting flexible filaments. The filaments are composed of an electrically conductive material and are supported by the body so as to be electrically charged. At least one of the filaments project outwardly into engagement with the wall of the downhole. The filaments also project radially outward into the consolidated formation. | 2012-05-10 |
20120112754 | APPARATUS QUANTIFYING STATE-OF-CHARGE OF VEHICLE-MOUNTED RECHARGEABLE BATTERY - A rechargeable battery state-of-charge quantifying apparatus for use in a vehicle equipped with an electric motor and a rechargeable battery which supplies electric power to the motor to produce a driving torque. The apparatus quantifies a state-of-charge of the rechargeable battery and defines a minimum value of a state-of-charge of the rechargeable battery at which the rechargeable battery is permitted to produce a degree of electric power required to run the vehicle as a lower limit. The lower limit is increased as the rechargeable battery ages, thereby ensuring the stability in supplying the amount of electric power to the motor which is required to run the vehicle regardless of aging of the battery. | 2012-05-10 |
20120112755 | BATTERY VOLTAGE MONITORING CIRCUIT - A battery voltage monitoring circuit includes a first power supply terminal to be connected to the positive terminal of a battery pack having rechargeable cells connected in series; a first supply voltage sensing terminal to be connected to the positive terminal of the battery pack; a first resistor connected between the first power supply terminal and the first supply voltage sensing terminal; a second supply voltage sensing terminal to be connected to the negative terminal of a first rechargeable cell of the rechargeable cells, the first rechargeable cell being on the positive terminal side of the battery pack and connected to the positive terminal of the battery pack; a second resistor connected between the second supply voltage sensing terminal and the first power supply terminal; and a first comparator configured to compare a voltage at the first power supply terminal and a voltage at the first supply voltage sensing terminal. | 2012-05-10 |
20120112756 | OPTOELECTRONIC MEMORY DEVICE AND METHOD FOR MANUFACTURING AND MEASURING THE SAME - The present invention provides an optoelectronic memory device, the method for manufacturing and evaluating the same. The optoelectronic memory device according to the present invention includes a substrate, an insulation layer, an active layer, source electrode and drain electrode. The substrate includes a gate, and the insulation layer is formed on the substrate. The active layer is formed on the insulation layer, and more particularly, the active layer is formed of a composite material comprising conjugated conductive polymers and quantum dots. Moreover, both of the source and the drain are formed on the insulation layer, and electrically connected to the active layer. | 2012-05-10 |
20120112757 | Ground Fault Detection and Location System and Method for Motor Drives - A motor drive system provides for analysis of current flow in the DC bus to identify ground faults and their locations. Low-frequency positive polarity and negative polarity current differences indicate ground faults from the positive DC bus and negative DC bus respectively. High-frequency signals indicate ground faults in the motor windings and connecting leads. | 2012-05-10 |
20120112758 | APPARATUS AND METHOD FOR GROUND FAULT DETECTION AND LOCATION IN UNGROUNDED ELECRICAL SYSTEMS - The present invention is implemented by deploying an enhanced ground fault detection and location apparatus and by using the apparatus in conjunction with specific circuit analysis methods, using the information generated by the ground fault detection and location apparatus. The ground fault detection and location apparatus comprises the functionality of a voltmeter, an ammeter, a phase angle meter, a frequency generator, and a variable power supply, thereby providing for a variety of signals and analyses to be performed on a unintentionally grounded circuit in an ungrounded AC or DC power distribution system. The ground fault detection and location apparatus is capable of operating in six different modes, with each mode providing a different capability or opportunity for detecting, analyzing, and locating one or more unintentionally grounded circuits in an normally ungrounded AC or DC power distribution system. | 2012-05-10 |
20120112759 | SYSTEM AND METHOD FOR TESTING A SECONDARY SERVO CONTROL CIRCUIT IN A REDUNDANT CONTROL CONFIGURATION - A system, apparatus and method are provided for testing a secondary servo control circuit in a redundant control configuration. A first circuit is configured to receive a control signal and to control an attribute of an actuator based on the control signal using a first control input of the actuator. A second circuit is configured to test operation of an actuator circuit using a test signal. The actuator circuit includes at least part of the second circuit and a second control input of the actuator. The test signal is selected to avoid causing independent motion of the actuator. The actuator could be a dual coil servo valve, and the test signal could be a current (such as a DC current, an AC current, or a pulsed current) having a magnitude less than a bias current of the actuator. | 2012-05-10 |
20120112760 | Arc Detection and Prevention in a Power Generation System - A method for arc detection in a system including a photovoltaic panel and a load connectible to the photovoltaic panel with a DC power line. The method measures power delivered to the load thereby producing a first measurement result of the power delivered to the load. Power produced by the photovoltaic panel is also measured, thereby producing a second measurement result of power produced by the photovoltaic panel. The first measurement result is compared with the second measurement result thereby producing a differential power measurement result. Upon the differential power measurement result being more than a threshold value, an alarm condition may also be set. The second measurement result may be modulated and transmitted over the DC power line. | 2012-05-10 |
20120112761 | AUTOMATIC TEST EQUIPMENT FOR TESTING AN OSCILLATING CRYSTAL AND METHOD FOR OPERATING THE SAME - Embodiments of the invention relate to automatic test equipment for testing a circuit having an oscillating crystal and to a method for operating such automatic test equipment. A generator generates a first signal comprising an oscillating part having at least one predetermined frequency. A first terminal couples the first signal to the oscillating crystal. At least one predetermined frequency is located inside a predetermined window around one of the resonance frequencies of the oscillating crystal. An analyzer has a second terminal coupled to the oscillating crystal for detecting a second signal and a rectifier connected in series with a low-pass filter for rectifying and filtering the second signal. A detector for detects a DC-signal at the output of the low-pass filter and for signals a valid test result for the oscillating crystal if the DC-signal exceeds a certain threshold value. | 2012-05-10 |
20120112762 | Connector for a Safety Restraint System - The present invention relates to squib connectors for instance for airbag ignition systems, which allow the electrical or electronic monitoring of the correct coupling of a squib plug-connector with its corresponding counterpart. According to the invention, a squib connector has at least two terminals having corresponding signal lines. In order to allow an electrical monitoring of the correct coupling of the plug connector, the terminals are in electrical contact with each other in the uncoupled or incorrectly coupled condition of the plug connector. This electrical contact between the terminals is adapted for being separated upon correct coupling to a corresponding counter-connector either automatically or by an actuating action. The disconnecting of the terminals may then be monitored by any suitable monitoring means. | 2012-05-10 |
20120112763 | Method for Detecting Small Delay Defects - System and method for effectively detecting small delay defects is disclosed. The method first loads layout information of an integrated circuit. Then, the nets and paths of the integrated circuit are partitioned into two groups based upon their physical information. The physical information comprises the length of each path and net and the number of vias at each path and net. A timing-aware automatic test pattern generator is configured to generate test patterns for the first group having paths and nets susceptible to small delay defects. A traditional transition delay fault test pattern generator is configured to generate test patterns for the second group. | 2012-05-10 |
20120112764 | METHOD OF MAKING A FINGER SENSOR PACKAGE AND ASSOCIATED DEVICES - A method of making finger sensor packages may include advancing a flexible circuit tape along a predetermined path of travel. The flexible circuit tape may include a flexible layer and conductive traces thereon defining individual flexible circuits. The method may include, as the flexible circuit tape is advanced along the path of travel, securing a respective finger sensing integrated circuit (IC) and surrounding sensor package frame to each flexible circuit, applying at least one fluid fill material adjacent each finger sensor IC while using the corresponding sensor package frame as a dam to thereby define finger sensor packages, and stamping out the finger sensor packages from the flexible circuit tape to form at least one flush common edge of each sensor package frame and individual flexible circuit. | 2012-05-10 |
20120112765 | MEMS In-Plane Resonators - MEMS in-plane resonators include a substrate wafer, at least one resonant mass supported by the substrate wafer and configured to resonate substantially in-plane, and at least one transducer coupled to the at least one resonant mass for at least one of driving and sensing in-plane movement of the at least one resonant mass, wherein at least part of one surface of the resonant mass is configured for exposure to an external environment and wherein the at least one transducer is isolated from the external environment. Such MEMS in-plane resonators may be fabricated using conventional surface micromachining techniques and high-volume wafer fabrication processes and may be configured for liquid applications (e.g., viscometry, densitometry, chemical/biological sensing), gas sensing (e.g., where a polymer film is added to the sensor surface, further degrading the damping performance), or other applications. | 2012-05-10 |
20120112766 | ELECTROMAGNETIC INDUCTION COORDINATE DETECTING SYSTEM AND METHOD THEREOF - An electromagnetic induction coordinate detecting method for detecting the trace of at least one electromagnetic pointing device on an electromagnetic sensor board is disclosed. The method includes the following steps: first, a delayed period for each electromagnetic pointing device is pre-determined. Then, whether a board-trigger signal from the electromagnetic sensor board is received is determined. If yes, the electromagnetic pointing device emits an electromagnetic signal after the delayed period. Finally, the electromagnetic sensor board calculates the coordinate and the pressure of each electromagnetic pointing device according to the received electromagnetic signal. | 2012-05-10 |
20120112767 | CAPACITIVE PROXIMITY SENSOR - A capacitive proximity sensor giving a long front detection range with less erroneous detection. | 2012-05-10 |
20120112768 | Methods and Systems for Production Testing of DCO Capacitors - Systems provide for a test system for capacitors in a digitally controllable oscillator (DCO). The system includes: capacitor toggling logic configured to switch on and off a selected one of the capacitors at a modulation frequency; a tone generator configured to generate a tone; a mixer configured to receive the tone and an output carrier signal from the DCO while the capacitor toggling logic is switching the selected one of the capacitors on and off and to output an intermediate frequency signal having FM sidebands based on the modulation frequency and relative capacitor size; and an evaluation circuit configured to evaluate a frequency deviation associated with the selected one of the capacitors based on at least one of the FM sidebands. | 2012-05-10 |
20120112769 | Method and system for inductive sensing of blades in a turbine engine - A method is provided for determining timing points indicative of the passage of a blade in a turbine engine. The method comprises the steps of: providing a s first sensing coil proximate to a path of the blade, providing a second sensing coil proximate to the path of the blade, the second sensing coil spaced from the first sensing coil in a direction parallel to the path of the blade, and comparing a signal generated in the first sensing coil with a signal generated in the second sensing coil to derive a timing point indicative of the passage of the blade. | 2012-05-10 |
20120112770 | Signal Processing - An iterative method may comprise obtaining a current input signal value for a current iteration, comparing the current input signal value with an output signal value determined in a previous iteration, updating a counter value determined in the previous iteration based on the comparison such that the updated counter value replaces the previously determined counter value, determining a slew value based on the counter value, and adding the slew value to the previously determined output signal value to generate a new current output signal value. Different slew values may be added to the previous output signal to obtain a new output signal. The counter value is updated to reflect recent trends in the input signals. For example, if the input signal is on an upward trend, the counter value may be relatively high because it is incremented each time an input signal exceeds a previously determined output signal. | 2012-05-10 |
20120112771 | APPARATUS AND METHOD FOR DETECTION OF SOLENOID CURRENT - An apparatus for detecting leakage current through a solenoid coil that includes a capacitor connected to one end of the solenoid coil and a feedback circuit that monitors the rate of decay of the capacitor voltage to determine if an excessive leakage current is present. | 2012-05-10 |
20120112772 | CIRCUIT FOR DETECTING CAPACITANCE ATTENUATION OF RECTIFICATION/FILTER CAPACITOR AND METHOD THEREOF - The present invention discloses a circuit for detecting capacitance attenuation of a rectification/filter capacitor and a method thereof. A rectification circuit provides a capacitor with a rectified ripple voltage having a maximum lower than output voltage of a back-up power supply device. An isolation device isolates the rectified ripple voltage and let the back-up power supply device supply power to other power supply devices. The detection switch of an detection circuit is turned on to electrically connect the capacitor with a resistor, whereby the resistor conducts the rectified ripple voltage to charge and discharge the capacitor to obtain a peak-to-valley ratio and a discharging time. The capacitance is worked out from the peak-to-valley ratio, discharging time and resistance of the resistor. The deterioration extent of the capacitor is obtained from the variation of the capacitance. Therefore, the UPS system would not be shut off during detecting the capacitor. | 2012-05-10 |
20120112773 | System and method for on-chip resistorcalibration in semiconductor devices - According to one disclosed embodiment, an on-chip resistor calibration circuit includes an RC oscillator having a test resistor and a precision capacitor as elements, a counter, and a reference clock. In one embodiment, an RC oscillator generates a waveform having a period dependent upon the resistance of the test resistor and the capacitance of the precision capacitor. In such an embodiment, a counter and a reference clock may be configured to measure the period of the waveform. Using a pre-determined capacitance of the precision capacitor, a resistance of the test resistor may be determined. In another embodiment, an RC oscillator generates first and second waveforms through use of an additional capacitor that can be switched in and out of the RC oscillator circuit. Using a pre-determined capacitance of the precision capacitor, an RC product of the test resistor and the additional capacitor may be determined. | 2012-05-10 |
20120112774 | Device and Method for Determining Capacitance as a Function of Voltage - A device and method of determining a capacitance of a device is provided, which in one embodiment includes connecting a first terminal of a capacitor having a known capacitance to the first terminal of the device, applying an AC voltage to the first terminal of the device and the first terminal of the capacitor, measuring a current through the capacitor, measuring a current through the device, determining a first voltage across the device as a function of time, computing a capacitance of the device as a function of time by multiplying the capacitance of the capacitor by the ratio of the current through the device to the current through the capacitor, determining a capacitance of the device as a function of voltage based on the capacitance as a function of time and the first voltage across the device as a function of time, and outputting data of the first capacitance of the device as a function of voltage. | 2012-05-10 |
20120112775 | Detection of the Conduction State of an RC-IGBT - A circuit arrangement includes: a reverse conducting IGBT configured to allow for conducting a load current in a forward direction and in a reverse direction, the IGBT having a load current path and a gate electrode; a gate control unit connected to the gate electrode and configured to activate or deactivate the IGBT by charging or, respectively, discharging the gate electrode in accordance with a gate control signal; a gate driver unit configured to detect whether the IGBT conducts current in the forward direction or the reverse direction by sensing a gate current caused by a change of a voltage drop across the load path due to a changing of the reverse conducting IGBT into its reverse conducting state, the gate control unit further configured to deactivate the IGBT or to prevent an activation of the IGBT via its gate electrode when the gate driver unit detects that the IGBT is in its reverse conducting state. | 2012-05-10 |
20120112776 | THREE-DIMENSIONAL (3D) STACKED INTEGRATED CIRCUIT TESTING - Testing of a three-dimensional (3D) integrated circuit includes defining a first group of parts by a region and/or layer on the 3D integrated circuit. The testing further includes applying a first intensity of stress test conditions to the first group of parts. The testing also includes defining a second group of parts by a region and/or layer on the 3D integrated circuit that is different from the first group of parts. The testing further includes and applying a second intensity of stress test conditions to the second group of parts. The second intensity of stress test conditions is greater than the first intensity and is determined by sensitivities identified for each of the first and second group of parts. A determination is made whether the 3D integrated circuit passed the testing based upon results of application of the first and second intensities of stress test conditions. | 2012-05-10 |
20120112777 | ELECTRONIC DEVICE PUSHING APPARATUS, ELECTRONIC DEVICE TEST APPARATUS, AND INTERFACE DEVICE - An electronic device pushing apparatus includes a pushing unit which has: a plurality of pushers which contact DUTs; and base plate on which the plurality of pushers are provided. A rigidity of the base plate is set to a rigidity which is lower relative to the rigidity of a spacing frame of the HIFIX. | 2012-05-10 |
20120112778 | METHODS AND APPARATUS FOR MULTI-MODAL WAFER TESTING - Access to integrated circuits of a wafer for concurrently performing two or more types of testing, is provided by bringing a wafer and an edge-extended wafer translator into an attached state. The edge-extended wafer translator having wafer-side contact terminals and inquiry-side contact terminals disposed thereon, a first set of wafer-side contact terminals being electrically coupled to a first set of inquiry-side contact terminals, and a second set of wafer-side contact terminals being electrically coupled to a second set of inquiry-side contact terminals. The edge-extended wafer translator having a central portion generally coextensive with the attached wafer, and an edge-extended portion extending beyond the boundary generally defined by the outer circumferential edge of the wafer. A first set of pads of at least one integrated circuit is electrically coupled to the first set of wafer-side contact terminals, and a second set of pads of the integrated circuit is electrically coupled to the second set of wafer-side contact terminals. The edge-extended wafer translator may be shaped such that its edge-extended portion is not coplanar with the central portion thereof. | 2012-05-10 |
20120112779 | RESILIENT ELECTRICAL INTERPOSERS, SYSTEMS THAT INCLUDE THE INTERPOSERS, AND METHODS FOR USING AND FORMING THE SAME - Resilient electrical interposers that may be utilized to form a plurality of electrical connections between a first device and a second device, as well as systems that may utilize the resilient electrical interposers and methods of use and/or fabrication thereof. The resilient electrical interposers may include a resilient dielectric body with a plurality of electrical conduits contained therein. The plurality of electrical conduits may be configured to provide a plurality of electrical connections between a first surface of the electrical interposer and/or the resilient dielectric body and a second, opposed, surface of the electrical interposer and/or the resilient dielectric body. The systems and methods disclosed herein may provide for improved vertical compliance, improved contact force control, and/or improved dimensional stability of the resilient electrical interposers. | 2012-05-10 |
20120112780 | OPEN TOP BURN IN SOCKET - A test socket for an integrated circuit device includes a base for receiving the circuit device and a frame movable linearly toward and away from the base. Springs bias the frame away from the base. Device holders are movable substantially linearly on the frame between a closed position where the device holders are in proximity to one another and an open position where the device holders are remote from one another. Cams move the device holders between the open and closed positions in response to movement of the frame toward and away from the base. | 2012-05-10 |
20120112781 | CONTACTOR, CONTACT STRUCTURE, PROBE CARD, AND TEST APPARATUS - A contactor and an associated contact structure, probe card and test apparatus are provided. The contact may include a base part having three or more steps in a stairway state, a support part with a rear end side provided at the base part and a front end side sticking out from the base part, and a conductive part formed on a surface of the support part and electrically contacting a contact of a device under test. | 2012-05-10 |
20120112782 | METHOD FOR PREDICTING TOLERABLE SPACING BETWEEN CONDUCTORS IN SEMICONDUCTOR PROCESS - A method for predicting tolerable contact-to-gate spacing is provided. At first, a wafer with a plurality of source/drain contacts are provided. Then, a plurality of testing gate lines are formed on the wafer by using a photomask. In one die, there are different contact-to-gate distances ranging from d+Δd to d−Δd wherein d is the standard spacing and Δd2012-05-10 | |
20120112783 | TEST APPARATUS - A test apparatus tests a DUT formed on a wafer. A power supply compensation circuit includes source and a sink switches each controlled according to a control signal. When the source or sink switch is turned on, a compensation pulse current is generated, and the compensation pulse current is injected into a power supply terminal of the DUT via a path that differs from that of a main power supply, or is drawn from the power supply current that flows from the main power supply to the DUT via a path that differs from that of the power supply terminal of the DUT. Of components forming the power supply compensation circuit, including the source and sink switches, a part is formed on the wafer. Pads are formed on the wafer in order to apply a signal to such a part of the power supply compensation circuit formed on the wafer. | 2012-05-10 |
20120112784 | DIFFERENTIAL SIGNAL TRANSMISSION LINE, IC PACKAGE, AND METHOD FOR TESTING SAID DIFFERENTIAL SIGNAL TRANSMISSION LINE AND IC PACKAGE - An IC package includes an integrated circuit for transmitting and receiving a pair of differential signals composed of a signal having positive polarity and a signal having negative polarity, a first signal terminal for transmitting the signal having positive polarity, a second signal terminal for transmitting the signal having negative polarity, and a third terminal arranged between the first signal terminal and the second signal terminal. The first and second terminals are electrically connected to the integrated circuit, and the third terminal is not electrically connected to the integrated circuit. | 2012-05-10 |
20120112785 | VOLTAGE DETECTION DEVICE AND SYSTEM - A voltage detection device including a multiplexer provided with a plurality of input channels connected to respective battery cells and an output channel connected to an analog-to-digital (AD) converter. The multiplexer is further provided with an additional input channel that is connected to a voltage source that supplies a fault detection voltage. A multiplexer controller is triggered by an input trigger signal to instruct the multiplexer to sequentially connect the input channels and the additional input channel to the output channel according to a predetermined voltage detection sequence. An abnormality detector determines that there exists an abnormality in the multiplexer controller on the basis of an output of the AD converter when the AD converter detects the fault detection voltage at a timing different from a normal timing defined by the voltage detection sequence. This enables the voltage detection device to self-diagnose the multiplexer controller. | 2012-05-10 |
20120112786 | MICRO-GRANULAR DELAY TESTING OF CONFIGURABLE ICS - A method for testing a set of circuitry in an integrated circuit (IC) is described. The IC includes multiple configurable circuits for configurably performing multiple operations. The method configures the IC to operate in a user mode with a set of test paths that satisfies a set of evaluation criteria. Each test path includes a controllable storage element for controllably storing a signal that the storage element receives. The method operates the IC in user mode. The method reads the values stored in the storage elements to determine whether the set of circuitry is operating within specified performance limits. | 2012-05-10 |
20120112787 | NONVOLATILE LOGIC CIRCUIT AND A METHOD FOR OPERATING THE SAME - A nonvolatile logic circuit includes logic configuration electrodes and input electrodes. The nonvolatile logic circuit is programmable to any one of the logics between the input signals selected from logical conjunction (AND), logical disjunction (OR), logical non-conjunction (NAND), logical non-disjunction (NOR), and logical exclusive disjunction (XOR) by changing applied voltages to the logic configuration electrodes. | 2012-05-10 |
20120112788 | Phase Change Device for Interconnection of Programmable Logic Device - A programmable logic device has a configurable interconnection coupling logic blocks, where the configurable interconnection has a phase change element with an amorphous region having a variable size to determine the phase change element is open or short. This isolates the programming path from the logic path. | 2012-05-10 |
20120112789 | PROGRAMMABLE LOGIC DEVICE WITH A SELF-POWER DOWN MECHANISM - Apparatuses for reducing power consumption in a programmable logic device (PLD) with a self power down mechanism are disclosed. Methods and a machine readable medium for restoring a prior known state are provided. The prior known state is stored in a memory module before the PLD is powered down and the same state is restored from the memory module when the PLD is powered up. The memory module may be an internal or an external non-volatile or volatile memory source. One sector of the memory may be used to store the previous known state. The memory sector can be partitioned into different sections. One section may be used as a header section associated with a data storage section. Partitioning the memory sector into different sections and utilizing multiple addresses from each section ensure less read and write cycles during the powering down and the powering up of the PLD. | 2012-05-10 |
20120112790 | Level Shifter - A level shifter having first and second P-type transistors cross coupled at an output port thereof, wherein there are first and second voltage rising circuits coupled at gates of the first and second P-type transistors, respectively. A voltage level at the gate of the first P-type transistor is associated with an output signal of the level shifter. When an input signal, operated by a first power, of the level shifter rises, the first voltage rising circuit couples a second power to the gate of the first P-type transistor to speed up the rising of the output signal. The voltage level at the gate of the second P-type transistor is associated with an inverted output signal. When the input signal falls, the second voltage rising circuit couples the second power to the gate of the second P-type transistor to speed up the rising of the inverted output signal. | 2012-05-10 |
20120112791 | ROBUST TIME BORROWING PULSE LATCHES - Configurable time-borrowing flip-flops may be based on configurable pulse generation circuitry and pulse latches. The circuitry may use a self-timed architecture that controls the width of clock pulses that are generated so that the pulse latches that are controlled by the clock pulses exhibit a reduced risk of race through conditions. Latch circuitry may be provided that is based on a pulse latch and an additional latch connected in series with the pulse latch. In situations in which there is a potential for race through conditions on an integrated circuit, the additional latch may be switched into use to convert the latch circuitry into an edge-triggered flip flop. Clock trees may be provide with configurable shorting structures that help to reduce clock skew. Low-contention clock drivers may drive signals onto the clock tree paths. | 2012-05-10 |
20120112792 | ONE PHASE LOGIC - Circuits comprising asynchronous linear pipelines and one-phase pipelines, and methods of forming asynchronous linear pipeline circuits and converting them to one-phase pipeline circuits are provided. Additional circuits, systems and methods are disclosed. | 2012-05-10 |
20120112793 | Low-Current Logic-Gate Circuit - A circuit includes E-mode transistors with gate-source junction, a D-mode transistor with gate-source junction. A component generates a voltage drop between the source of the D-mode transistor and the drain of an E-mode transistor provided as a signal output. A connection is made between this drain of the E-mode transistor and the gate of the D-mode transistor, and a signal input at the gates of the E-mode transistors. | 2012-05-10 |
20120112794 | DIFFERENTIAL DRIVER WITH CALIBRATION CIRCUIT AND RELATED CALIBRATION METHOD - A calibration circuit for calibrating a differential driver with a differential output port including a first output node and a second output node includes: a comparing circuit arranged to receive a first output voltage corresponding to the first output node and a second output voltage corresponding to the second output node, and generate a comparison result according to the first output voltage, the second output voltage, and a predetermined voltage; and a controlling circuit coupled to the comparing circuit, a first resistive element and a second resistive element. The controlling circuit is arranged to adjust the first resistive element and the second resistive element according to the comparison result, wherein the first resistive element is coupled between the first output node and a reference voltage, and the second resistive element is coupled between the second output node and the reference voltage. | 2012-05-10 |
20120112795 | Peak Current Control Circuit for Switching Mode Power Supply and Method Thereof - A switching mode power supply with improved peak current control is disclosed. A varying reference signal is adopted to limit the peak current in the energy storage component. The varying reference signal is an exponential function of a time period when a power switch is ON, wherein the power switch is coupled to the energy storage component. The varying reference signal may be generated by a circuit comprising a RC circuit and one or several voltage sources. | 2012-05-10 |
20120112796 | Oscillators and methods of operating the same - Oscillators and methods of operating the oscillators are provided, the oscillators include an oscillating unit including at least one magnetic layer having a magnetization direction that varies according to at least one selected from the group consisting of an applied current, an applied voltage and an applied magnetic field. The oscillating unit is configured to generate an oscillation signal having a set frequency. The oscillators further include an output stage that provides an output signal by differentially amplifying the oscillation signal. | 2012-05-10 |
20120112797 | VOLTAGE SENSING CIRCUIT WITH REDUCED SUSCEPTIBILITY TO GAIN DRIFT - A voltage sensing circuit includes a voltage to current converter, an integrator, a sample and hold amplifier, and a modulator. The voltage to current converter produces a modulated current corresponding to an input voltage. The integrator demodulates the modulated current and produces a voltage sum of the demodulated current. The sample and hold amplifier samples the voltage sum and provides an output voltage corresponding to the voltage sum. The modulator modulates the output voltage and provides the modulated voltage to the voltage to current converter as a feedback voltage. | 2012-05-10 |
20120112798 | CURRENT-TO-VOLTAGE CONVERTER, RECEIVER, METHOD FOR PROVIDING A VOLTAGE SIGNAL AND METHOD FOR RECEIVING A RECEIVED SIGNAL - A current-to-voltage converter for providing a voltage signal based on a current signal has a first active stage having an input and an output. The first active stage is configured to receive the current signal at its input and provide the voltage signal at its output. In addition, the current-to-voltage converter has a second active stage that is coupled between the output of the first active stage and the input of the first active stage. The second active stage is configured to provide the input of the first active stage with a feedback signal that frequency-selectively counteracts amplification, by the first active stage, of signal components of a current signal applied to the input of the first active stage that have a frequency outside of a prescribed useful frequency band. | 2012-05-10 |
20120112799 | TRANSMITTER HAVING SOURCE FOLLOWER VOLTAGE REGULATOR - A transmitter suitable for signal driving of a semiconductor device includes a driving power voltage generator and an output driver. The driving power voltage generator includes an NMOS transistor having a drain connected with a first voltage supply terminal, a gate connected to receive a second voltage lower than a voltage of the first voltage supply terminal, and a source outputting an output driving voltage and configured to perform source follower voltage regulating. | 2012-05-10 |
20120112800 | Method of and Driver Circuit for Operating a Semiconductor Power Switch - To operate a semiconductor power switch having a control electrode and a reference electrode in response to first and second switching commands, a control voltage between a first electric pole and a second electric pole is provided. Upon each first switching command, the control electrode is coupled to the first electric pole, and the reference electrode is coupled to the second electric pole; and upon each second switching command, the control electrode is coupled to the second electric pole, and the reference electrode is coupled to the first electric pole. Upon each switching command, continuously transitioning an electric potential of the one of the control and reference electrodes during a first transition period, and continuously transitioning an electric potential of the respective other of the control and reference electrodes during a second transition period occurs, wherein the first transition period beginning before and ending after the second transition period. | 2012-05-10 |
20120112801 | Low-Current Input Buffer - A current-limited differential entry stage compares an input signal to a reference voltage generated by a current-limited transistor or diode configuration. Current limiters comprise a D-mode feedback transistor having a gate-source junction. The D-mode transistor is not conducting between the source and the drain if a gate-source voltage is more negative than a negative threshold voltage, and conducting between the source and the drain, otherwise a feedback connection connects the source of the D-mode feedback transistor to its gate via a component that generates a voltage drop. | 2012-05-10 |
20120112802 | DRIVING TRANSISTOR CONTROL CIRCUIT - A control circuit controls a driving transistor connected in series with an electrical load between a power supply voltage and a ground. The control circuit includes a pull-up resistor connected at one end to a power supply voltage side of the driving transistor, a current detection resistor for detecting an electric current flowing from the driving transistor to the ground, a current mirror circuit including a starting transistor connected between the pull-up transistor and the current detection resistor. The current mirror circuit supplies a mirror current of the electric current. The control circuit further includes a current source circuit for supplying a driving current to a control terminal of the driving transistor in accordance with the mirror current to turn ON the driving transistor in response to an external control signal. | 2012-05-10 |
20120112803 | PROCESS, TEMPERATURE, PART AND SETTING INDEPENDENT RESET PULSE ENCODING AND DECODING SCHEME - A method of generating a reset signal for an integrated circuit without a dedicated reset pin includes calibrating a first clock pulse from a clock signal, measuring a second clock pulse from the clock signal, measuring a third clock pulse from the clock signal, and generating an internal reset signal if the first clock pulse width is longer than a predetermined minimum clock pulse width, if the second clock pulse is within an expected first value range, and if the third clock pulse is within an expected second value range. | 2012-05-10 |
20120112804 | CALIBRATION METHOD AND APPARATUS FOR CLOCK SIGNAL AND ELECTRONIC DEVICE - An embodiment of the invention provides a clock calibration method to calibrate an internal clock signal of a computer. The method comprises: receiving an external clock signal from an external clock source; generating a pulse signal with a first duration according to the external clock signal; counting the internal clock signal according to the pulse signal to get a first count value; and calibrating the internal clock according to the first count value. | 2012-05-10 |
20120112805 | PHASE-FREQUENCY DETECTOR - A phase-frequency detector includes an up signal generating unit and a down signal generating unit. The up signal generating unit is configured to evaluate a first node to generate an up signal, precharge the first node in response to a first clock, and reset the first node in response to the first clock, the up signal, and a down signal. The down signal generating unit is configured to evaluate a second node to generate a down signal, precharge the second node in response to a second clock, and reset the second node in response to the second clock, the up signal, and the down signal. | 2012-05-10 |
20120112806 | FREQUENCY SYNTHESIZER AND FREQUENCY SYNTHESIZING METHOD - The present invention relates to a frequency synthesizer comprising a main unit and a side unit. The main unit comprises a main phase detector to obtain a main control signal, a main oscillator that generates a main synthesized frequency output signal representing the frequency synthesizer output signal based on said main control signal, and a mixer that mixes said main synthesized frequency output signal with a side synthesized frequency output signal to obtain said mixer output signal. The side unit generates said side synthesized frequency output signal and comprises a frequency signal generation unit that provides a linear frequency sweep signal or a fixed-frequency control signal at a fine frequency resolution from said fixed-frequency side reference signal, and a side oscillator that generates said side synthesized frequency output signal based on said frequency sweep signal or said fixed-frequency control signal. | 2012-05-10 |
20120112807 | TEST AND MEASUREMENT INSTRUMENT WITH OSCILLATOR PHASE DEJITTER - A test and measurement instrument including an oscillator configured to generate a periodic signal; a mixer configured to mix an input signal with the periodic signal to generate a frequency-shifted signal; a trigger system configured to generate a trigger signal; a phase detector configured to sense a phase between the trigger signal and the periodic signal; and a controller configured to adjust processing of the frequency-shifted signal in response to the phase. | 2012-05-10 |
20120112808 | PHASE-LOCKED LOOP CIRCUIT - A gm-C VCO oscillates at a frequency that corresponds to an input control voltage. A divider divides the frequency of an oscillation signal output from the gm-C VCO. A phase comparison signal generating unit generates a phase difference signal that corresponds to the phase difference between the oscillation signal thus frequency-divided by the divider and a reference clock signal. A loop filter performs filtering of the phase difference signal so as to generate the control voltage. A startup circuit injects a seed pulse into the gm-C VCO at a timing determined based upon the level of a detection signal that corresponds to the control voltage. | 2012-05-10 |
20120112809 | METHOD AND DIGITAL CIRCUIT FOR GENERATING A WAVEFORM FROM STORED DIGITAL VALUES - In a particular embodiment, a method includes adjusting an input to a divider on a feedback path of a phase locked loop circuit based on a stored digital value representing a portion of a time-based waveform that is applied to a modulator circuit. The stored digital value is retrieved based on an output of the feedback path. | 2012-05-10 |
20120112810 | CLOCK DE-SKEWING DELAY LOCKED LOOP CIRCUIT - A clock de-skewing delay locked loop circuit is revealed. In the clock de-skewing delay locked loop circuit, a timing control circuit generates a first and a second clock signals according to an external and an internal clock signal. A clock delay line delays the first clock signal or the external clock signal to generate delay signals. A delay mirror circuit synchronizes the internal clock signal with the external clock signal. A phase adjustment circuit inverts the internal clock signal according to the phase difference. An inverting buffer circuit buffers the external clock signal or the first clock signal for adding an initial delay time so as to make a duty cycle of internal clock signal and of the external clock signal complement each other. Thus the duty cycle of the external clock signal in the proposed circuit is not necessarily 50%. | 2012-05-10 |
20120112811 | GENERATION OF ADJUSTABLE PHASE REFERENCE WAVEFORM - One embodiment provides a system for generating a reference waveform. The system can include a first pulse-width modulation (PWM) channel configured to provide a first PWM waveform having a first duty cycle and a first frequency. A second PWM channel is configured to provide a second PWM waveform having a second duty cycle and the first frequency. Combinational logic is configured to combine the first PWM waveform and the second PWM waveform to generate a phase-shifted reference PWM waveform having the first frequency and a phase shift that is based on the first duty cycle and the second duty cycle. | 2012-05-10 |
20120112812 | CLOCK GENERATOR, PULSE GENERATOR UTILIZING THE CLOCK GENERATOR, AND METHODS THEREOF - Disclosed is a clock generator for generating a target clock signal, which includes: a control circuit, receiving a reference clock signal, and for generating a clock enable signal and a delay selecting signal according to the reference clock signal; a delay module, coupled to the control circuit, for delaying the reference clock signal according to the delay selecting signal to generate a delayed reference clock signal; and a clock gating unit, coupled to the delay module and the control circuit, for receiving the delayed reference clock signal and the clock enable signal, and for passing the delayed reference clock signal according to the clock enable signal, to generate the target clock signal. | 2012-05-10 |
20120112813 | Latch Circuits with Synchronous Data Loading and Self-Timed Asynchronous Data Capture - A latch integrated circuit has synchronous data loading and self-timed asynchronous data capture characteristics. The integrated circuit may include a latch, a pulse generator and a comparator. The latch can be responsive to a data signal and a write enable signal. The pulse generator may be configured to generate the write enable signal as a pulse. This pulse may have a leading edge synchronized with a first edge of a clock signal and a self-timed trailing edge synchronized with an edge of a comparison signal. The comparator may be configured to generate the comparison signal in response to comparing logic levels of at least two nodes within the integrated circuit. | 2012-05-10 |
20120112814 | PWM TIMER FOR POWER SUPPLY - A forward converter circuit includes a transformer having a primary winding and a secondary winding. A first transistor is coupled in series with the primary winding and a second transistor is coupled in series with the secondary winding. A control circuit generating control signals for controlling operation of the first and second transistors. The control signals are generated responsive to the values in certain triggered counting circuits satisfying programmable thresholds. | 2012-05-10 |
20120112815 | HIGH FREQUENCY SOLID STATE SWITCHING FOR IMPEDANCE MATCHING - In accordance with this invention the above and other problems are solved by a switching apparatus and method that uses a switching circuit having a pair of parallel solid-state diodes (e.g., PN diodes), one of which is connected to a transistor (e.g., power MOSFET or IGBT), to switch a capacitor in or out of a variable capacitance element of an impedance matching network. Charging a body capacitance of the transistor reverse biases one of the two diodes so as to isolate the transistor from the RF signal enabling a low-cost high capacitance transistor to be used. Multiple such switching circuits and capacitors are connected in parallel to provide variable impedance for the purpose of impedance matching. | 2012-05-10 |