04th week of 2009 patent applcation highlights part 17 |
Patent application number | Title | Published |
20090021214 | Portable electronic device carrier with charging system - A portable electronic device carrier includes a charging system. The carrier is configured to at least partially house a portable electronic device such as a cell phone, PDA or the like. The carrier may comprise a pouch or have other configurations. The charging system comprises at least one photovoltaic cell configured to convert light into electricity, and at least one charging port configured to be engaged by a portable electronic device, the charging port configured to provide power to the portable electronic device when the portable electronic device is engaged therewith. The charging system may include at least one battery configured to be charged by the electricity generated by the at least one photovoltaic cell. The charging port may comprise contacts which are engaged by an interface of the portable electronic device. In accordance with the invention, a portable electronic device is charged using a portable charging system associated with a carrier for the device. | 2009-01-22 |
20090021215 | CHARGER UNIT FOR AN ELECTRONIC DEVICE INCLUDING A SYSTEM FOR PROTECTIVE STORAGE OF AN ADAPTER PLUG - A charger unit for an electronic device that includes a housing, a plurality of charging contacts provided on the housing, and a recess provided in the housing, preferably on a rear face thereof. A plug having a plurality of prongs may be selectively attached to and detached from the housing for electrically connecting the charger unit to a source of charging current. When attached to the housing, one or more of the prongs of the plug are electrically connected to a respective one of the charging contacts. In addition, a plurality of storage sockets are provided in the housing within the recess. Each of the storage sockets are adapted to receive and hold therein a respective one of the prongs of the plug to enable the plug to be safely and securely stored when not in use. | 2009-01-22 |
20090021216 | Dual-Battery Charging And Discharging Method And Device And Portable Electronic Device Containing The Same - The device contains a first switch and a third switch for the charging and discharging of a main battery, and a second switch and a fourth switch for the charging and discharging of an auxiliary battery. The first switch or the second switch is turned on so as to connect and discharge the main battery or the auxiliary battery to a load circuit. The third switch or the fourth switch is turned on so as to charge the main battery or the auxiliary battery by an external power source. The present invention further provides a portable electronic device incorporating such a dual-battery charging and discharging method or device. | 2009-01-22 |
20090021217 | METHOD AND DEVICE FOR SAFETY PROTECTION OF SECONDARY BATTERY - A method and device for safety protection of a secondary battery capable of preventing smoking and ignition thereof. A lithium cell | 2009-01-22 |
20090021218 | BATTERY CHARGING BASED ON COST AND LIFE - One embodiment of the present subject matter includes a system that includes a battery, an electric vehicle, the battery coupled to the electric vehicle to propel the electric vehicle, and a charging circuit to charge the battery. The embodiment includes a charging cost circuit to estimate a charging cost rate and to turn on the charging circuit. The embodiment also includes a timer circuit to provide a time signal to the charging cost circuit. The embodiment is configured such that the charging cost circuit is to turn on the charging circuit during a first time period in which the charging cost rate is below a first threshold until the battery reaches a first energy stored level, and to turn on the charging circuit during a second time period in which the charging cost rate is above the first threshold. | 2009-01-22 |
20090021219 | POWER RECEPTION CONTROL DEVICE, POWER RECEPTION DEVICE, NON-CONTACT POWER TRANSMISSION SYSTEM, CHARGE CONTROL DEVICE, BATTERY DEVICE, AND ELECTRONIC INSTRUMENT - A power reception control device provided in a power reception device of a non-contact power transmission system includes a power-reception-side control circuit that controls an operation of the power reception device, and a power supply control signal output terminal that supplies a power supply control signal to a charge control device, the power supply control signal controlling power supply to a battery. The power-reception-side control circuit controls a timing at which the power supply control signal (ICUTX) is output from the power supply control signal output terminal. The operation of the charge control device is compulsorily controlled using the power supply control signal (ICUTX). | 2009-01-22 |
20090021220 | BATTERY EQUALIZER FOR CARS - There is provided a battery equalizer for cars. The battery equalizer for cars includes a battery module including first and second batteries and a battery equalizer mounted in the battery module to sustain charge voltages of the first and second batteries to be the same. The battery equalizer includes a power converting unit for converting power so that the charge voltages are equally charged in the first and second batteries and a noise preventing unit connected between the power converting unit and an external case to remove conductive noise of the power converting unit and surge noise of the external case. | 2009-01-22 |
20090021221 | VOLTAGE DIVIDING VEHICLE HEATER SYSTEM AND METHOD - An apparatus comprising battery pack installed in an electric vehicle, a power supply coupled to the rechargeable battery pack, the power supply operable to provide a charge voltage to perform charging operations on the rechargeable battery pack;, a heater to heat a fluid to be circulated through the rechargeable battery pack, the fluid thermally coupled to a plurality of battery cells within the rechargeable battery pack, a switching circuit, the switching circuit coupled to the heater and to the power supply, the switching circuit operable in a first mode to couple the source of electrical power to the heater without coupling the source of electrical power to the rechargeable battery pack, the switching circuit operable in a second mode to couple a source of electrical power external to the electric vehicle to the power supply to form a recharging circuit in order to perform charging operations on the rechargeable battery pack. | 2009-01-22 |
20090021222 | CELL CONTROLLER - A cell controller capable of ensuring high safety even when a short occurs among voltage detecting lines without causing increased costs is provided. The cell controller | 2009-01-22 |
20090021223 | BATTERY CHARGER FOR PREVENTING BOTH OVERSHOOT CHARGING CURRENT AND OVERCHARGED BATTERY VOLTAGE DURING CHARGING MODE TRANSITION - A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a current sensing unit and an operational amplifier. The current sensing unit monitors a charging current applied to the battery when the battery charger operates under a constant current mode, thereby generating a first regulation signal to the charging regulation circuit. The operational amplifier compares a battery voltage of the battery with a first reference voltage to generate a comparison result. When the battery charger operates under the constant current mode, the comparison result controls a charging mode transition from the constant current mode to a constant voltage mode. When the battery charger operates under the constant voltage mode, the comparison result acts as a second regulation signal to control the charging regulation circuit. | 2009-01-22 |
20090021224 | VOLTAGE REGULATOR FOR MAGNETOGENERATORS WITH CONFIGURABLE CONNECTION OF THE PHASE WINDINGS - The voltage regulator receives power in A.C. from a permanent magnet voltage generator, having phase windings with a configurable connection, to supply power in D.C. to a battery. The voltage regulator comprises a plurality of semi-bridge rectifiers connected between the terminals of the phase windings of the voltage generator, and a battery power supply terminal; it also comprises a control circuit designed to change over the connection of the phase windings between two different configurations, for example star and delta, in relation to the charging voltage of the battery upon exceeding a threshold value of the phase frequency of the voltage generator. | 2009-01-22 |
20090021225 | DEVICE FOR SUPPLYING THE INDUCTOR OF A ROTATING ELECTRICAL MACHINE - Device for supplying the inductor ( | 2009-01-22 |
20090021226 | SEMICONDUCTOR INTEGRATED CIRCUIT AND SENSOR DRIVING/MEASURING SYSTEM - In a sensor driving/measuring system, specifications required by a sensor which requires a high applied voltage are implemented with const increase suppressed. A semiconductor integrated circuit for use in a sensor driving/measuring system driven by a battery includes: a sensor driver for outputting a given voltage to be applied to a sensor; a measuring circuit for receiving and measuring a voltage obtained, through current-voltage conversion, from a current generated in the sensor; and a booster. The booster boosts a given pre-boost voltage to obtain a boosted voltage and supplies the boosted voltage as a power supply voltage to the sensor driver and the measuring circuit. | 2009-01-22 |
20090021227 | POWER-SUPPLY DEVICE, IC CIRCUIT, AND INFORMATION PROCESSING APPARATUS, AND SOFT-START CONTROL METHOD - An electric current flowing to an upper side power MOSFET during soft-start is detected according to an on-voltage of the MOSFET and an on-pulse width of a PWM pulse for driving the upper side power MOSFET is forced to be reset in the idle and decided according to a signal generated when the voltage falls below a predetermined specified voltage. | 2009-01-22 |
20090021228 | INTEGRATED CMOS DC-DC CONVERTER IMPLEMENTATION IN LOW-VOLTAGE CMOS TECHNOLOGY USING LDO REGULATOR - An electrical circuit and method of power management of a cellular telephone includes a battery adapted to produce a battery voltage; a LDO regulator operatively connected to the battery and adapted to provide a constant supply voltage from the battery voltage; and a DC-DC converter operatively connected to the LDO regulator, wherein the DC-DC converter is adapted to step down the constant supply voltage to a lower voltage level, wherein the LDO regulator and the DC-DC converter are embedded on a single integrated circuit chip. The constant supply voltage equals 3.6V at an output of the LDO, and the constant supply voltage is applied to an input of the DC-DC converter. Moreover, the battery voltage equals at most 5.5V. | 2009-01-22 |
20090021229 | Method and Apparatus for Enabling a Voltage Regulator - A voltage regulator circuit is operated by enabling a bias network operable to set a bias current in an amplifier. A startup circuit is connected to the bias network, the startup circuit operable to assist the bias network in setting the amplifier bias current during a startup period. The startup circuit is disconnected from the bias network responsive to the startup period lapsing while the voltage regulator circuit is enabled for resetting the startup circuit to an initial state. The bias network may be disabled to reduce the amplifier bias current. Subsequent re-enablement of the bias network is prevented until the amplifier is reliably disabled. | 2009-01-22 |
20090021230 | DRIVING DEVICE AND DISLAY DEVICE INCLUDING THE SAME - A driving voltage circuit for a liquid crystal display and a liquid crystal display using the driving voltage circuit. A liquid crystal display according to the present invention includes a liquid crystal display panel for displaying an image and a driving voltage generating circuit connected to the display panel, wherein the driving voltage generating circuit includes a DC-DC converter for converting an input voltage level of a power input terminal to drive the liquid crystal display panel and outputting it as a liquid crystal driving voltage, a power line for connecting the power input terminal and the DC-DC converter, a first diode connected to a first node of the power line, a liquid crystal driving voltage terminal connected to a first output terminal of the DC-DC converter, and a second diode connected to the first diode and the liquid crystal driving voltage terminal, wherein the power line includes a second node connected to a ground electrode between the first diode and the second diode. | 2009-01-22 |
20090021231 | Voltage regulator - Provided is a voltage regulator having satisfactory transient response characteristics. Because a PMOS ( | 2009-01-22 |
20090021232 | Switching Regulator - A switching regulator according to the invention includes a resistor (R | 2009-01-22 |
20090021233 | PWM CONTROLLER WITH OUTPUT CURRENT LIMITATION - A PWM controller with output current limitation makes the over-current limitations almost the same even though the input voltages are different. The designer does not need to use high specification components or add an output current limiting circuit against the over-current condition. Costs are reduced and the layout is simplified. The switch power supply includes a transformer, a power switch, a first detecting circuit for generating a first detecting signal, a second detecting circuit for generating a second detecting signal, and a controller. The transformer converts the power and outputs the power to the secondary side. The power switch has a first terminal, a second terminal, and a controlled terminal. The controller has a control terminal, a first detecting terminal for receiving the first detecting signal, and a second detecting terminal for receiving the second detecting signal. The controller performs a protecting operation according to the received signals. | 2009-01-22 |
20090021234 | Ultra low-voltage sub-bandgap voltage reference generator - A low-voltage sub-bandgap reference circuit is disclosed. In one embodiment, the low-voltage sub-bandgap voltage reference circuit includes a differential amplifier and a first bipolar transistor with its base and collector coupled to an electrical ground. The reference circuit further includes a second bipolar transistor with base and collector coupled to the electrical ground. The reference circuit further includes a DC bias circuit supplying a predetermined voltage output between a high and low voltage terminal, the high voltage terminal being coupled to both collectors of the first and second bipolar transistors and the low voltage terminal being coupled to both bases of the first and second bipolar transistors. | 2009-01-22 |
20090021235 | METHODS AND SYSTEMS FOR DETECTING DC INFLUENCE IN A CURRENT SENSOR - Methods and systems for an electrical meter are provided. The meter includes a current sensor configured to be communicatively coupled to a conductor, and a processor communicatively coupled to the current sensor wherein the processor is configured to receive signals indicative of current flow through the conductor and wherein the processor is further configured to process the signals to determine an imbalance between the positive half cycle of the current flowing through the conductor and the negative half cycle of the current flowing through the conductor to detect a DC influence on the current sensor. | 2009-01-22 |
20090021236 | Alignment Correction System and Method of Use - A system and method for correcting alignment of a product on a tool and, more particularly, to a system and method for correcting alignment of a wafer on a chuck of a tool. The system is a tool comprising at least one contact near a circumference of the tool and a grounded contact proximate to the at least one contact. The method comprises measuring current on each branch of a circuit and calculating an angle of a wafer based on a difference in the current on each branch of the circuit. | 2009-01-22 |
20090021237 | Current transformer and electric energy meter - A current transformer detects a sine-wave alternating current having a maximum effective current value I | 2009-01-22 |
20090021238 | OPTICAL DEVICE AND METHOD OF CONTROLLING THE SAME - An optical device includes an optical element, a detector and a controller. The optical element has an optical waveguide. Refractive index of the optical waveguide is controlled by a heater. A temperature of the optical element is controlled by a temperature control device. The detector detects a current flowing in the heater and/or a voltage applied to the heater. The controller controls an electrical power provided to the heater so as to be kept constant according to the detection result of the detector. | 2009-01-22 |
20090021239 | CURRENT MEASURING APPARATUS, TEST APPARTAUS, CURRENT MEASURING METHOD AND TEST METHOD - There is provided a current measuring apparatus that measures an electric current received by an electronic device from an input terminal, The current measuring apparatus includes a first voltage accumulator that accumulates a reference supply voltage that acts as a reference for a voltage being supplied to the electronic device during measuring electric currents, a first switch that connects a power supply to the first voltage accumulator to accumulate the reference supply voltage before measuring electric currents and disconnects the power supply from the first voltage accumulator during measuring electric currents, a current supplying section that supplies an electric current based on the reference supply voltage accumulated in the first voltage accumulator and a terminal voltage of the input terminal to the electronic device during measuring electric currents, and a first current measuring section that measures the supply current supplied to the electronic device. | 2009-01-22 |
20090021240 | CIRCUIT TESTER/JUMPER - A device which may be utilized as a circuit testing device or a power source conductor device includes a handle with a single lead wire electrically connected to a light in series circuit with a probe. Further included is a push button switch on the side of the handle which may be manually moved to disengage the light from the circuit and simultaneously enable a series circuit directly to the probe to thereby provide a power source. | 2009-01-22 |
20090021241 | Method for measuring velocity of conductor pressing on capacitive sensor - A method for measuring a velocity of a conductor pressing on a capacitive sensor. The method includes: sampling a capacitance of a sensing electrode at each preset time; providing a threshold value; and determining the velocity of the conductor pressing on the capacitive sensor according to a specific period, wherein the specific period is defined as a period of time ranging from the time when the capacitance reaches the threshold value to the time when the capacitance reaches a peak value. | 2009-01-22 |
20090021242 | DEVICE AND METHOD FOR MEASURING A QUANTITY REPRESENTING THE ROTATIONAL SPEED OF A MOTOR VEHICLE AND SYSTEM AND METHOD USING SAID DEVICE AND METHOD - The invention concerns a device for measuring a quantity representing the rotational speed of a motor vehicle wheel ( | 2009-01-22 |
20090021243 | Inductive Speed Detector - Arrangement for inductive speed detection in which two planar coils are arranged offset at a given distance from a so-called pulse wheel and in the rotational direction of the pulse wheel, and are each part of an oscillator, the oscillator frequency of which is evaluated. | 2009-01-22 |
20090021244 | Sensor - A magnetizing apparatus is for magnetizing a magnetizable object. The magnetizing apparatus comprises a programming unit being shaped in such a manner that, when the programming unit is positioned adjacent to the magnetizable object and an electrical programming signal is applied to the programming unit, the magnetizable object is magnetized so as to form at least two magnetically encoded regions with different magnetic polarity along an extension of the magnetizable object. | 2009-01-22 |
20090021245 | LINEAR AND ROTATIONAL INDUCTIVE POSITION SENSOR - An apparatus for providing a signal related to a position of a part comprises an exciter coil, and a receiver coil disposed proximate to the exciter coil. The exciter coil generates magnetic flux when the exciter coil is energized by a source of electrical energy, such as an alternating current source. The receiver coil generates a receiver signal when the exciter coil is energized, due to an inductive coupling between the receiver coil and the exciter coil. The receiver coil has a plurality of sections, the inductive coupling tending to induce opposed voltages in at least two of the sections. Embodiments of the present invention include linear sensors, rotational sensors, and novel configurations for improved ratiometric sensing. | 2009-01-22 |
20090021246 | ROTATION ANGLE DETECTION DEVICE AND ROTATION ANGLE CORRECTION METHOD - A device for detecting an absolute rotation angle of multiple rotation with a high accuracy and high resolution by using a target connected to the rotation axis and having an outer circumferential surface to which magnetic poles of alternate polarities are magnetized. The device includes: a first rotor holding a target connected to an input axis and having an outer circumferential surface to which magnetic poles of alternate polarities are magnetized at an identical interval and having a multi-rotatable gear; a second rotor connected to the gear of the first rotor, rotated at a low speed by the first rotor, and having a magnet at the center portion; a first detection unit and a second detection unit for detecting the rotation angles of them. With a simple configuration, it is possible to detect an absolution rotation angle with a high accuracy and a high resolution. | 2009-01-22 |
20090021247 | Device for determining the angular position of a rotatable compressor stator blade - The invention refers to a device for determining the angular position of a compressor stator blade, which is rotatable around its longitudinal axis and arranged in a compressor, with which is associated a measuring surface which rotates synchronously with it. For a reliable, simple and approximately error-free recording of the angular positions, the angular position of the compressor stator blade can be determined via the device in an automated manner. For this purpose, it has at least one mounting unit provided for aligned fastening of the device on the compressor, and at least one measuring and evaluating unit which comprises at least two distance sensors which each record a distance to the measuring surface which is rotatable from the reference position, as a result the angular position of the measuring surface, relative to the reference position depends upon the two recorded distances, is determined by the measuring and evaluating unit. | 2009-01-22 |
20090021248 | INDUCTIVE PROXIMITY DETECTOR WITH SWITCHED WINDINGS - The invention relates to an inductive proximity detector comprising an oscillating circuit ( | 2009-01-22 |
20090021249 | CORE-LESS CURRENT SENSOR - Core-less current sensor comprises two parallel conductors carrying equal currents in the same direction. The magnetic field in mid location of the two parallel conductors carrying equal currents in the same direction for all current magnitudes is zero in absence of an external magnetic interference. Sum of magnetic fields in two points equidistant from the mid location on both the sides is zero as magnetic fields at these points are equal in magnitude and opposite in polarity for all current magnitudes and for equal amount of currents flowing through both conductors in same direction in absence of an external magnetic interference. Two sensing elements can be arranged between the two parallel conductors for sensing the magnetic field due to currents flowing through them for the purpose of current measurement. Sensor output is the difference between two outputs measured by the sensing elements. Outputs of sensing elements can vary due to external interference. As variation in the outputs of sensing elements due to external interference gets cancelled in sensor output, automatic external field compensation can be achieved. | 2009-01-22 |
20090021250 | TARGET SUBSTANCE DETECTION KIT AND TARGET SUBSTANCE DETECTION METHOD - The present invention allows a target substance to be detected easily without applying an external magnetic field to a magnetic marker. The present invention provides a target substance detection kit including: a target substance detection board which contains a magnetic sensor and a first target substance capture molecule; and a magnetic marker which contains a magnetic structure and a second target substance capture molecule, wherein the first target substance capture molecule exists on a surface of the target substance detection board, and the magnetic structure generates a magnetic stray field under polarized light. | 2009-01-22 |
20090021251 | BALANCING CIRCUIT FOR A METAL DETECTOR - A balancing circuit for a metal detector. The metal detector includes an oscillating power source, a transmit coil connected to the oscillating power source, first and second receive coils inductively coupled to the transmit coil, a first amplitude balancing circuit connected to the first receive coil, and a first phase balancing circuit connected to the first receive coil. The first phase balancing circuit includes a capacitor and a variable resistor. | 2009-01-22 |
20090021252 | METAL DETECTOR - A vibration canceling circuit for a metal detector. The metal detector includes a transmit coil, first and second receive coils, a differential circuit coupled to the first and second receive coils, a controller coupled to the differential circuit, and a vibration canceling circuit coupled to the controller. The controller uses a signal provided by the vibration canceling circuit to remove a vibration component from a metal detection signal. | 2009-01-22 |
20090021253 | METHOD AND DEVICE FOR LONG-RANGE GUIDED-WAVE INSPECTION OF FIRE SIDE OF WATERWALL TUBES IN BOILERS - Methods and devices for inspecting waterwall tubes for the detection of fire side damage over a long length of the tube are described. The system of the invention uses a magnetostrictive strip and a flat coil-type plate magnetostrictive sensor (MsS) that are held in place on the waterwall using a specially designed frame and an electromagnetic circuit. The magnetostrictive strip and plate type MsS are positioned against a tube in the waterwall using an elastomeric pad or a fluid filled bladder to achieve close contact and good mechanical coupling between the magnetostrictive strip and the tube surface. When current activated, the electromagnet holds the entire assembly in place and provides a DC bias magnetic field required for plate magnetostrictive sensor probe operation. Long-range guided-waves are pulsed into the tube and reflected signals are detected within the same sensor structure. The received signal data representative of a long section of the tube under investigation is then analyzed for the presence of anomalies and defects. When data acquisition for a particular tube or tube section is completed the electromagnet is turned off and the entire device is moved to the next tube in the waterwall. | 2009-01-22 |
20090021254 | Methods for Arbitrary Shape Selective Excitation Summed Spectroscopy and Applications of Same - In another aspect, the present invention relates to a method for NMR measurements of an arbitrarily shaped region of interest of a living subject. In one embodiment, the method comprises the steps of applying a broad bandwidth of RF pulses to the arbitrarily shaped region of interest to obtain a corresponding spectrum, wherein substantially entire range of chemical shifts in the spectrum is excited from the arbitrarily shaped region of interest, interleaving a plurality of radial k-lines in radial k-space per excitation with non-selective refocusing pulses and obtaining spatial localization for the spectrum of the arbitrarily shaped region of interest. | 2009-01-22 |
20090021255 | APPARATUS AND METHOD FOR CRYOGENICALLY COOLING A COIL ON A MAGNETIC RESONANCE IMAGING SYSTEM - A magnetic resonance imaging system ( | 2009-01-22 |
20090021256 | High frequency coil and magnetic resonance imaging apparatus - To provide an RF coil of an MRI apparatus and improve the irradiation efficiency and the reception sensitivity of a circular polarized magnetic field with a simple structure. | 2009-01-22 |
20090021257 | MAGNETIC RESONANCE IMAGING APPARATUS, SETTING SUPPORTING APPARATUS, AND SETTING SUPPORTING METHOD - Support information including at least a setting image showing a present configuration of placing a patient on a bed and a present configuration of placing an RF coil for the patient is displayed. As necessary, the support information is displayed while including the position of a virtual magnetic field center corresponding to the position of a magnetic field center in the case of moving the bed into a gantry. The displayed support information is stored at a predetermined timing and can be read arbitrarily. By observing the displayed support information, the operator can promptly and easily determine whether the placement configuration of the patient and that of the RF coil at present are proper or not, and can accurately correct the placement configuration of the patient or the RF coil. | 2009-01-22 |
20090021258 | Method for determining local deviations of a main magnetic field of a magnetic resonance device - The invention relates to a method for the determination of local deviations of a main magnetic field of a magnetic resonance device from a setpoint value, comprising: loading of a first image data record of an examination region recorded by means of the magnetic resonance device with a first frequency encoding gradient; loading of a second image data record of the same examination region recorded by means of the magnetic resonance device with a second frequency encoding gradient, with the first and the second frequency encoding gradient being different; reception of a transformation displacement field as the end result of a recording of the first and the second image data record; calculation of local deviations of the main magnetic field from a setpoint value on the basis of the calculated transformation displacement field; and display or storage of the calculated local deviations of the main magnetic field. | 2009-01-22 |
20090021259 | LOW TEMPERATURE SUSCEPTIBILITY COMPENSATION - The NMR device with a magnet utilizes a composition exhibiting a desired value of magnetic susceptibility, wherein the composition comprises a metal ion selected from the group consisting of Gd | 2009-01-22 |
20090021260 | Rotor drive apparatus and methods utilizing center-fed radial-outflow gas - A rotor drive apparatus includes a rotor and a stator. The stator has a gas injection orifice located on the axis about which the rotor spins. The gas injection orifice communicates with a bearing gap formed between a tapered surface of the rotor and an axially spaced tapered surface of the stator. A gas is flowed from the gas injection orifice through the bearing gap, thereby establishing a center-fed, radial-outflow gas bearing supporting the rotor during rotation. In one implementation, a separate flow of drive gas is fed to drive flutes of the rotor to drive rotation. In another implementation, the center-fed, radial-outflow gas flow is additionally utilized to impinge against the drive flutes to actuate the rotation. | 2009-01-22 |
20090021261 | Rf trap tuned by selectively inserting electrically conductive tuning elements - A magnetic resonance imaging scanner ( | 2009-01-22 |
20090021262 | Non Polarized Contacts for Resistivity Measurements in Drill Cuttings Samples for Surface Logging While Drilling - Apparatus and probe for non-polarized contacts for resistivity measurements in drill cuttings. At least two probes having a highly conductive shell from non-corrosive metal in form of pipe and a wood and/or other fine channeled thread (grained) water filled that will be conductive when it is wet. | 2009-01-22 |
20090021263 | Multi-Ion Potential Sensor and Fabrication thereof - A multi-ion potential sensor is disclosed. The multi-ion potential sensor comprises a substrate, a conductive layer, an isolation layer, a tin oxide (SnO | 2009-01-22 |
20090021264 | METHOD AND APPARATUS FOR REPEATABLE DRIVE STRENGTH ASSESSMENTS OF HIGH SPEED MEMORY DIMMS - The present invention assesses memory (DIMM) strength by calculating frequency content of a radiated field which is collected by an apparatus, such as a dipole antenna. Radiated field is created by accelerated charge, which is a function of the slew rate or DIMM strength. Radiated power is directly proportional to the frequency at which bits are driven. By separating the radiated field from the near field or stored field, the DIMM strength content is isolated from other functional DIMM issues, such as tRCD latency, refresh cycles, addressing mode, etc. By examining the radiated power, the disadvantages of the prior art, such as by probing the DIMM's contacts, are avoided. | 2009-01-22 |
20090021265 | Lead insertion system and method - A system for determining whether a lead is securely inserted into a connector includes an actuator for moving the lead to a plurality of positions, a position sensor for measuring a position of the lead relative to the connector, and a force sensor for measuring an actual force exerted on the lead at each of the plurality of positions to define an actual force signature. A processor compares the actual force signature to a predetermined force signature to determine whether the lead is disposed within the opening of the connector. The method includes the steps of moving the lead to a plurality of positions, establishing an actual force signature, and establishing a predetermined force signature. If the actual force signature is within the predetermined force signature, then the lead is securely inserted into the opening. | 2009-01-22 |
20090021266 | DEFECT DETECTION SYSTEM WITH MULTILEVEL OUTPUT CAPABILITY AND METHOD THEREOF - A defect detection system and related method take advantage of multilevel detection technique for detecting defects on an integrated circuit. The defect detection system utilizes an analog-to-digital converter for converting an analog sensing signal into an output code having a plurality of bits. The defect detection methods include an open test method and a short test method. The open and short test methods both include a calibrating method and a testing method individually. The calibrating method functions to determine a preset reference voltage for the analog-to-digital converter based on a predetermined code. The testing method makes use of the preset reference voltage and the predetermined code for generating the output code having a plurality of bits. The output code is then utilized to determine whether or not there are open or short defects on the integrated circuit and to classify the defects. | 2009-01-22 |
20090021267 | Variably dimensioned capacitance sensor elements - A capacitance sensing apparatus includes capacitance sensor elements covered by a layer of material. The layer of material has an uneven effect on a measure of capacitance induced in the capacitance sensor elements when an object is in proximity to a sensing surface. For example, the layer of material may have a non-uniform thickness, or a property of the material may be non-uniform across the layer. The capacitance sensor elements are dimensioned to compensate for the effect. | 2009-01-22 |
20090021268 | Touch sensor with electrostatic immunity and sensing method thereof - The present invention relates to a touch sensor with electrostatic immunity and sensing method thereof. The touch sensor includes a sensing electrode, a discharge element, a sensing-controlling terminal and an input-output (I/O) control terminal, wherein the discharge element is coupled between the sensing-controlling terminal and the I/O control terminal and the sensing electrode is coupled to the sensing-controlling terminal. The essence of the present invention is using charge-discharge through the sensing-controlling terminal and the I/O control terminal for sensing whether a conductor contacts the sensing electrode. There are corresponding compensations no matter an electrostatic charge on the sensing electrode is positive charge or negative charge. Therefore, the influence of electrostatic charge can be eliminated. | 2009-01-22 |
20090021269 | Method for measuring speed of conductor slipping through capacitive sensor - A method for measuring a speed of a conductor slipping through a capacitive sensor. The method includes: sampling a capacitance of a sensing electrode at each preset time; determining a first threshold value and a second threshold value according to a peak value of the capacitance when the capacitance achieves the peak value; and determining the speed of the conductor slipping through the capacitive sensor by the first period and the second period, wherein the first period is defined as a period of time ranging from the time when the capacitance reaches the first threshold value to the time when the capacitance reaches the peak value and the second period is defined as a period of time ranging from the time when the capacitance reaches the peak value to the time when the capacitance reaches the second threshold value. | 2009-01-22 |
20090021270 | CAPACITIVE DETECTION OF DUST ACCUMULATION IN A HEAT SINK - A system and method for electronically detecting the accumulation of dust within a computer system using a capacitive dust sensor. The dust detection system may be implemented on a smaller computer, such as an individual PC, or in a more expansive system, such as a rack-based server system (“rack system”) having multiple servers and other hardware devices. In one embodiment, each server in a rack system includes a capacitive sensor responsive to the accumulation of dust. The capacitive sensor may include one or more capacitive plates integral with a heatsink. As dust collects on the capacitive plates, the capacitance increases. When a capacitance setpoint is reached, indicating the dust has reached a critical level, an alert is generated. The alerts may be received by a management console for the attention of a system administrator. Each alert may contain the identity of the server generating the alert, so that the system administrator knows which server(s) are to be removed for cleaning. | 2009-01-22 |
20090021271 | Measuring the On-Resistance of a Transistor Load Path - Methods, and apparatuses for performing them, including applying a control signal to a control terminal of a transistor, to switch the transistor to an on-state such that the transistor carries a load current through a load-path of the transistor; measuring a voltage drop across the load-path of the transistor while the load current is passing through the load-path of the transistor, yielding a first measurement value; feeding a test current into the load-path of the transistor, such that the test current and the load current are combined; measuring a voltage drop across the load-path of the transistor while the combined test and load currents are passing through the load-path of the transistor, a second measurement value; and determining an on-resistance of the load-path of the transistor from a difference of the first and second measurement values. | 2009-01-22 |
20090021272 | INSPECTION APPARATUS, PROBE CARD AND INSPECTION METHOD - By allowing an electrical conduction between a probe and an electrode by a fritting phenomenon before inspection, simplification of circuit configuration and shortening of inspection time is achieved. A fritting circuit is formed in a probe card of an inspection apparatus for each probe pair consisting of two probes. A capacitor is connected to each fritting circuit. Each fritting circuit is connected in parallel to a power supply circuit having a charging power supply. Each capacitor is charged at one time by the power supply circuit. The probe pair is brought into contact with an electrode of a wafer, and a high-voltage is applied to the probe pair by a power charged in the capacitor, thereby achieving an electrical connection between each probe and the electrode by a fritting phenomenon. Then, an inspection of electrical characteristics is performed by using an electric inspection signal transmitted to each probe. | 2009-01-22 |
20090021273 | On-wafer test structures - A test structure for characterizing integrated circuits on a wafer includes a differential cell outputting a differential mode signal in response to a differential mode input signal. The probe pads of the test structure are arrayed linearly enabling placement of the test structure in a saw street between dies. | 2009-01-22 |
20090021274 | ELECTRICAL CONNECTING APPARATUS - An electrical connecting apparatus comprises a plurality of plate-shaped probes. Each probe has a cut-off portion opening on its inside surface side and both sides in the thickness direction of the probe and is engaged with a dropout preventing member disposed in a plate-shaped housing at the cut-off portion, thereby being prevented from dropping out of the housing. | 2009-01-22 |
20090021275 | METHOD AND ARRANGEMENT FOR POSITIONING A PROBE CARD - A method for perpendicular positioning of a probe card relative to a test substrate, includes storing a separation position approached in a first positioning step as a distance between the needle tips of the probe card and the substrate, storing a contact position approached in a second positioning step until the probe card contacts the substrate, and displaying an image of the needle tips. For avoiding erroneous operation after a probe card has been changed, when imaging the needle tips, the stored contact position is imaged and is changed until presentation of this contact position corresponds to actual height of the tips appropriate for the respective probe card and this setting is then stored as a new contact position. A display device presents the needle tips and the stored contact position and is connected to a memory, a recording device and an input device which changes the contact position. | 2009-01-22 |
20090021276 | Probe or Measuring Head with Illumination of the Contact Region - A probe or measuring head for measuring an electrical signal of an electrical contact has an electrically conducting feeler ( | 2009-01-22 |
20090021277 | DEVICE AND METHOD FOR REPARING A MICROELECTROMECHANICAL SYSTEM - A novel device and method for repairing MEMS systems, including probe cards for use in semiconductor testing is disclosed. In one embodiment, a probe card for use with a diagnostic computer for testing semiconductor wafers comprises a substrate, a plurality of operational probes connected to the substrate, wherein the plurality of operational probes are adapted to make an electrical connection with the diagnostic computer and a plurality of replacement probes connected to the substrate, wherein the plurality of operational probes and the plurality of replacement probes are constructed in substantially the same manufacturing process. Also disclosed is a novel probe card that can be repaired. Specifically, a probe card for use with a diagnostic computer for testing semiconductor wafers, the probe card comprises a substrate and a plurality operational of probes connected to the substrate, wherein the plurality of operational probes are adapted to make an electrical connection with the diagnostic computer, and wherein the plurality of operational probes include a sacrificial material that is activated by applying a voltage. | 2009-01-22 |
20090021278 | Commutation failure detection circuit for back-to-back SCR circuit and controlling method thereof having relatively better efficiency - The configurations of a commutation failure detection circuit for a back-to-back SCR circuit and the controlling methods thereof are provided. The proposed commutation failure detection circuit includes a first detecting signal generator coupled to the back-to-back SCR circuit for detecting a commutation at a negative half cycle of an AC input voltage and including a first non-conductive signal amplifier circuit generating a first non-conductive signal when the back-to-back SCR circuit is not conductive at the negative half cycle of the AC input voltage and a second detecting signal generator coupled to the back-to-back SCR circuit for detecting the commutation at a positive half cycle of the AC input voltage and including a second non-conductive signal amplifier circuit generating a second non-conductive signal when the back-to-back SCR circuit is not conductive at the positive half cycle of the AC input voltage. | 2009-01-22 |
20090021279 | SEMICONDUCTOR TESTING CIRCUIT AND SEMICONDUCTOR TESTING METHOD - A semiconductor testing circuit of the present invention includes a signal line which is connected to a terminal not to be tested and a plurality of terminals to be tested of a semiconductor device; switch circuits for controlling electrical connection/disconnection between the signal line and the terminals to be tested; and a resistor connected to one end of the signal line. With this configuration, in a test on the AC characteristics of an input signal, a test signal generated by an LSI tester can be inputted to the terminals to be tested through the terminal not to be tested and the signal line by turning on the switch circuits. | 2009-01-22 |
20090021280 | Method and test system for determining gate-to-body current in a floating body FET - In one disclosed embodiment, the present method for determining a gate-to-body current for a floating body FET comprises measuring at least three unique gate-to-body currents corresponding to at least three unique body-tied FET structures, determining at least three unique relationships between the at least three unique gate-to-body currents and at least three gate-to-body current density components for the at least three unique body-tied FET structures, and utilizing those at least three unique relationships to determine the at least three gate-to-body current density components; wherein one of the gate-to-body current density components is used to determine the gate-to-body current for the floating body FET. In one embodiment, a test structure implements a method for determining a gate-to-body current in a floating body FET. The determined gate-to-body current may be used to predict hysteresis in the floating body FET. | 2009-01-22 |
20090021281 | Digital Phase Discriminator - A phase discriminator for being used in a phase-locked loop to determine if a phase difference between a reference signal and a target signal has reached a programmable gap value is disclose which comprises a programmable phase gap selector receiving the reference signal, a first phase digital converter converting an output signal from the programmable phase gap selector to a first digital code, a second phase digital converter converting a phase difference between the target signal and the reference signal to a second digital code, and a code comparator comparing the first and second digital code and generating a first instructional signal based on a change of order of the values of the first and second digital code. | 2009-01-22 |
20090021282 | High-frequency signal detector - Disclosed is a high-frequency signal detector circuit including a diode detector circuit for detecting an input signal by diode detection; a differential-input/differential output amplifier with a common mode feedback circuit, the amplifier including a differential amplifying circuit for differentially receiving outputs of the diode detector circuit and outputting a differential output signal, and a common mode feedback circuit for controlling the differential amplifying circuit in such a manner that a voltage corresponding to a mid-point of the differential output signal from the differential amplifying circuit will take on a voltage identical with a prescribed voltage; and a differential-input/single-ended output amplifier for receiving the differential output signal of the differential amplifying circuit and outputting a single-ended output signal. The circuit further includes a binarization circuit for receiving the output signal of the differential-input/single-ended output amplifier and comparing the output signal with a threshold voltage to thereby binarize and output the signal. The threshold voltage is adjustably set. | 2009-01-22 |
20090021283 | HIGH SPEED LATCHED COMPARATOR - An improved latched comparator, including a track mode circuit, a latch and a latch and track select circuit. The track mode circuit includes two transistors having their sources connected together, and their respective gates receiving a respective first and second input, and their drains connected to the power supply by respective resistors. The latch includes a further two transistors having their sources connected together, a gate of each connected to a drain of the other, and their drains connected to a respective one of the common connection node of the first transistor and the first resistor, and the second transistor and the second resistor. The latch and track select circuit includes a further transistor having an source connected to a current sink connected to ground, having a gate connected to receive a track signal and having a drain connected to the common connection node of the first and second transistors, and a still further transistor having a source connected to the current sink connected to ground, having a gate connected to receive a latch signal and having a drain connected to the common connection node of the third and fourth transistors. Bipolar embodiments are also included. | 2009-01-22 |
20090021284 | Low voltage differential signal receiver - The invention discloses a low voltage differential signal (LVDS) receiver, which is realized in an integrated circuit. The LVDS receiver includes: an input stage circuit receiving a full-range common-mode voltage and converting it into a current signal; a current source circuit coupled to the input stage circuit to provide a current source; and a current mirror circuit coupled the input stage circuit and the current source circuit to provide several bias voltage signals for the current source circuit and output a voltage signal to a buffer. | 2009-01-22 |
20090021285 | HIGH PERFORMANCE MIXED SIGNAL CIRCUIT - The present invention is related to a digital circuit for use in a mixed-signal circuit. The digital circuit comprises:
| 2009-01-22 |
20090021286 | PSEUDO DIFFERENTIAL OUTPUT BUFFER, MEMORY CHIP AND MEMORY SYSTEM - An output buffer includes first and second input transistors, first and second output loads and a current source. The first and second input transistors have first current electrodes that are commonly coupled to each other and control electrodes that are respectively coupled to a first differential input signal and a second differential input signal. The first and second output loads are coupled between a first power supply voltage and the first and second input transistors, respectively, wherein an output terminal is coupled to a node where the first output load is coupled to the first input transistor. The current source is coupled between the first current electrodes of the first and second input transistors and a second power supply voltage, wherein the second output load has an impedance value substantially one half of an impedance value of the first output load. Therefore, a differential output signal may be outputted through a single output terminal. | 2009-01-22 |
20090021287 | Circuit and method for driving organic light emitting diode - A drive circuit for organic light emitting diodes (OLEDs), and a method for driving OLEDs, using the drive circuit. The drive circuit includes pixel circuits, each of which includes a first transistor for receiving a data voltage, and outputting a drive current to an OLED, a second transistor for transmitting the data voltage to the first transistor, a third transistor for connecting the gate and drain of the first transistor, a capacitor for storing a gate voltage of the first transistor, and a fourth transistor connected to the drain of the first transistor. The OLED is connected to the source of the first transistor by a fifth transistor, or is directly connected to the source of the first transistor without using the fifth transistor. The drive circuit generates drive current, based on a non-uniformity-compensated threshold voltage of the first transistor, thereby obtaining a uniform luminance of the OLED. | 2009-01-22 |
20090021288 | Signal Delay Element, Method and Integrated Circuit Device for Frequency Adjustment of Electronic Signals - The invention relates to frequency adjustment of electronic signals. The method comprises the steps of providing an output signal of a frequency generator with a first frequency as input signal for a signal delay element providing an edge of said input signal of said signal delay element; delaying said input signal by adding a delay to each cycle of said input signal until the delayed output signal of the signal delay element is aligned to an edge of said input signal. | 2009-01-22 |
20090021289 | Voltage Detection Circuit in an Integrated Circuit and Method of Generating a Trigger Flag Signal - An integrated circuit that includes at least one tunneling device voltage detection circuit for generating a trigger flag signal. The tunneling device voltage detection circuit includes first and second voltage dividers receiving a supply voltage and having corresponding respective first and second internal node output voltages. The first and second voltage dividers are configured so the first output voltage is linear relative to the supply voltage and so that the second output voltage is nonlinear relative to the supply voltage. As the supply voltage ramps up, the profiles of the first and second output voltage cross at a particular voltage. An operational amplifier circuit senses when the first and second output voltages become equal and, in response thereto, outputs a trigger signal that indicates that the supply voltage has reached a certain level. | 2009-01-22 |
20090021290 | Method and System for Improved Efficiency of Synchronous Mirror Delays and Delay Locked Loops - A plurality of improved memory systems employing a phase detection system in conjunction with either a synchronous mirror delay or a delay-locked loop, and related methods of operation, are disclosed. The memory systems determine timing characteristics among multiple signals and, based upon those timing characteristics, vary which clock-related signal is output. The improvement relates in part to the incorporation of a clock divider that reduces the frequency of the clock signals utilized by the system. Due to the incorporation of the clock divider and an edge recovery device, attenuation, power dissipation and duty cycle distortion associated with propagation of the clock signal(s) are reduced. Further, the reduction in frequency of the clock signals allows for numerous differently-phased clock signals to be generated within the system, which allows for finer timing comparisons to be performed, thus allowing for finer selections to be made in relation to which clock-related signal is output. | 2009-01-22 |
20090021291 | Adaptive EMI reduction technique for wireline PHYS in multi-port applications - An adaptive electromagnetic interference (EMI) detection and reduction device for multi-port applications is provided. The invention includes at least two physical devices (PHY), where the PHYs transmit data along wire pairs to a register jack (RJ). The transmissions create EMI along the wire pairs, where the transmissions have constructively interfering resonant frequencies having phases and amplitudes. An antenna is disposed proximal to each RJ, where the antennae detect each frequency. A resonating network determines a peak amplitude of each frequency, an envelope detector amplifies each peak amplitude from the resonating network. A discretization circuit converts the amplified peak to discrete amplitude values, where the discretization circuit transmits the discrete amplitude values to a controller. The controller receives the discrete amplitude values from the discretization circuit, and communicates with each PHY, where a phase or frequency of the PHY signal is modified to minimize the constructive interference between the resonant frequencies. | 2009-01-22 |
20090021292 | RELIABLE LEVEL SHIFTER OF ULTRA-HIGH VOLTAGE DEVICE USED IN LOW POWER APPLICATION - The present invention relates to integrated circuits. In particular, it relates to an IC comprising a receiving stage for receiving an input signal, an output stage for generating an output signal having a larger voltage range than the input signal and a level shifter. Embodiments of the invention provide a structure and a method for fabricating the IC wherein the level shifter is incorporated within the IC to improve reliability of the IC. | 2009-01-22 |
20090021293 | Low-Power Integrated-Circuit Signal Processor With Wide Dynamic Range - An integrated circuit includes at least three separate power supply terminals, at least one for those portions of the circuit that must accommodate the widest signal-related voltage excursion, at least one for those that experience substantially smaller signal-related voltage excursions, and a common terminal. | 2009-01-22 |
20090021294 | Driving device of voltage drive type semiconductor device - A driving device | 2009-01-22 |
20090021295 | Dual reactive shunt low noise amplifier - A dual reactive shunt feedback low noise amplifier design may include a transconductance amplifier having a capacitor coupled across it and a pair of coupled inductors coupled across it. In one embodiment, the coupled inductors may be laid out as two overlapping coils. | 2009-01-22 |
20090021296 | SAMPLING FILTER AND RADIO COMMUNICATION APPARATUS - There are provided a sampling filter that enables a filter characteristic to be adjusted flexibly, and a radio communication apparatus equipped with this sampling filter. A sampling filter apparatus ( | 2009-01-22 |
20090021297 | SIGNAL PROCESSING APPARATUS, FILTER APPARATUS, SIGNAL PROCESSING METHOD AND FILTERING METHOD - There is provided a signal processing apparatus including a variable capacitor and a switching portion for switching the circuit mode between a sampling mode, in which the variable capacitor samples an input signal, a holding mode, in which a charge gained by sampling the input signal is held in the variable capacitor, and an output mode for outputting the charge stored in the variable capacitor, wherein the variable capacitor is provided with an input terminal through which the input signal is inputted in the sampling mode, a control terminal to which a first control signal which decreases the capacitance of the variable capacitor to a value below the capacitance in the sampling mode is inputted in the output mode, and a second control signal having a predetermined reference voltage is inputted in the holding mode, where an insulating layer is provided between the control terminal and the input terminal. | 2009-01-22 |
20090021298 | METHOD AND APPARATUS TO SELECT A PARAMETER/MODE BASED ON A TIME MEASUREMENT - Techniques are disclosed to select functional parameters and/or operating modes of a circuit based on a time measurement are disclosed. One example integrated circuit includes a threshold detection and timing circuit that is coupled to measure a signal during an initialization period of the integrated circuit from a multifunction capacitor that is to be coupled to a first terminal of the integrated circuit. A selection circuit is coupled to the threshold detection and timing circuit to select a parameter/mode of the integrated circuit in response to the measured signal from the multifunction capacitor during the initialization period of the integrated circuit. The multifunction capacitor is coupled to provide an additional function for the integrated circuit after the initialization period of the integrated circuit is complete. | 2009-01-22 |
20090021299 | Semiconductor Device and Display Device Utilizing the Same - A source-drain voltage of one of two transistors connected in series becomes quite small in a set operation (write signal), thus the set operation is performed to the other transistor. In an output operation, two transistors operate as a multi-gate transistor, therefore, a current value can be small in the output operation. In other words, a current can be large in the set operation. Therefore, the set operation can be performed rapidly without being easily influenced by an intersection capacitance and a wiring resistance which are parasitic on a wiring and the like. Further, an influence of variations between adjacent ones can be small as one same transistor is used in the set operation and the output operation. | 2009-01-22 |
20090021300 | Apparatus and Method for Detecting Output Power From an Amplifier - An apparatus for detecting output power from an amplifier ( | 2009-01-22 |
20090021301 | Efficient Composite Amplifier - A detuned composite amplifier includes a nonlinear drive function ( | 2009-01-22 |
20090021302 | METHOD AND APPARATUS FOR REDUCING CURRENT CONSUMPTION OF MIMO SYSTEMS - Apparatus and method for reducing the current consumption and increasing the efficiency of a MIMO system, consisting of one or more RF power amplifiers (PAs) and that is required to provide a desired total output power level. An individual output power level which is a portion of the total output power level is determined for each PA. The load, connected to the output stage of each PA, is dynamically or statically tuned to essentially match the output impedance of its output stage, such that its dynamic or static RF load line has a slope that corresponds to the impedance required to provide this portion. Whenever a smaller output power is desired in response to reduction in the input signal to MIMO system, a reduced portion is determined for each PA and the load is further tuned, such that the dynamic/static RF load line has a slope that causes each PA to essentially remain in saturation while providing the reduced portion. | 2009-01-22 |
20090021303 | Distortion-Driven Power Amplifier Power Supply Controller - A power amplifier controller measures the distortion of a power amplifier output. Based upon the distortion measured, the supply voltage to the PA is adjusted in a control loop. In one embodiment, distortion is measured by computing the ratio of the measured power in the output frequencies outside the desired output channel to the measured power in the output frequencies within the desired channel. If the distortion measured from the PA is higher than a target distortion level, the power supply voltage is raised. If the distortion measured from the PA is lower than the target distortion level, the power supply voltage is reduced. Thus, the supply voltage to the PA is maintained at the lowest possible voltage level, improving the efficiency of the PA. | 2009-01-22 |
20090021304 | Model based distortion reduction for power amplifiers - A method of processing a signal is disclosed. The method comprises generating a digital signal, converting the digital signal to an analog signal, and generating an amplified analog signal having distortions. The method further comprises converting the amplified analog signal to a feedback digital signal at a sample rate and updating a model of the distortions based on the feedback digital signal. | 2009-01-22 |
20090021305 | Class D amplifier - Class D amplifier is resistant to interferences. Binary output signals y | 2009-01-22 |
20090021306 | INTEGRATED CIRCUIT SYSTEM FOR LINE REGULATION OF AN AMPLIFIER - An integrated circuit system is provided including forming a differential pair; reducing a mismatch in the differential pair by: coupling an amplifier to the differential pair; and coupling a local feedback network to the amplifier in which referencing the local feedback network includes coupling a first voltage; and driving an output transistor by the amplifier. | 2009-01-22 |
20090021307 | MULTI-BAND, INDUCTOR RE-USE LOW NOISE AMPLIFIER - Described herein are multi-band LNAs that reuse inductors for different frequency bands to minimize chip area. In an embodiment, a multi-band LNA is capable of operating in a narrowband (NB) and a wideband (WB) while reusing at least one input impedance matching inductor and at least one load inductor for both bands. The reuse of inductors results in a more efficient use of chip area. In an exemplary embodiment, the LNA comprises a common source transistor and a common gate transistor. In this embodiment, the LNA operates in a common source configuration using the common source transistor to amplify input signals in the NB, and operates in a common gate configuration using the common gate transistor to amplify input signals in the WB. The LNA reuses an input impedance matching inductor and a load inductor in both configurations, and thus both bands. | 2009-01-22 |
20090021308 | Voltage Regulator Startup Method and Apparatus - A voltage regulator circuit comprises an amplifier, bias network and startup circuit. The bias network is configured to generate a bias voltage for setting a bias current in the amplifier. The startup circuit is configured to mirror the amplifier bias current and to assist the bias network in setting the amplifier bias current based on the mirrored amplifier bias current until the bias voltage approximates a desired level. | 2009-01-22 |
20090021309 | Fully Integrated Ultra Wideband Transmitter Circuits and Systems - Disclosed is a novel design of a fully integrated UWB transmitter. The transmitter includes a pulse generator, a pulse modulator, and an ultra-wideband drive amplifier. A new low voltage low power pulse generator circuit is disclosed which can be fully integrated in CMOS or BiCMOS process. This circuit includes a squaring stage, an exponential stage, and a second-order derivative stage. Based on this, PPM, BPSK and PAM pulse modulator circuits and system are disclosed. The modulated pulse is symmetrical second-order derivative Gaussian pulses with a bandwidth up to 5 GHz and having sufficient swing for UWB applications. An ultra-wideband driver amplifier is proposed to amplify the modulator output and drive the antenna. For the driver amplifier, common source resistor and inductor shunt feedback with current reuse technique is employed to achieve the ultra-wideband bandwidth, high gain, and providing matching for the antenna simultaneously. | 2009-01-22 |
20090021310 | SYSTEM AND METHOD FOR PHASE-LOCKED LOOP (PLL) FOR HIGH-SPEED MEMORY INTERFACE (HSMI) - A phase-locked loop (PLL) to provide clock generation for high-speed memory interface is presented as the innovate PLL (IPLL). The IPLL architecture is able to tolerate external long loop delay without deteriorating jitter performance. The IPLL comprises in part a common mode feedback circuit with a current mode approach, so as to minimize the effects of mismatch in charge-pump circuit, for instance. The voltage-controlled oscillator (VCO) of the IPLL is designed using a mutually interpolating technique generating a 50% duty clock output, beneficial to high-speed double data rate applications. The IPLL further comprises loop filter voltages that are directly connected to each VCO cell of the IPLL. Conventional voltage-to-current (V-I) converter between loop filter and VCO is hence not required. A tight distribution of VCO gain curves is therefore obtained for the present invention across process corners and varied temperatures. | 2009-01-22 |
20090021311 | VCO Pre-Compensation - A VCO device is described that has pre-compensation. Digitally switchable compensation capacitors are selectively activated to adjust operation of the VCO to mitigate undesirable operational effects. In some example embodiments, the digitally switchable compensation capacitors of the VCO are adjusted to compensate for the effects of activating (from a quiescent state) an output buffer driven by the VCO. | 2009-01-22 |
20090021312 | PLL circuit - It has been difficult that conventional PLL circuits have a suppression characteristic of suppressing the phase noise which is free of variation due to temperature and individual difference and stable in a wide frequency band. The present invention provides a PLL circuit which can absorb variation of phase noise characteristic due to temperature and individual difference and has a phase noise suppression characteristic stable in a wide frequency band. The PLL circuit comprises, at the succeeding stage, a first register for storing a first parameter for controlling the loop gain, a first multiplier for multiplying the output of the phase comparator by a first parameter, a second register for storing a second parameter for controlling the response characteristic, a second multiplier for multiplying the output of the first multiplier by a second parameter, and a CPU for setting optimum parameters in the first and second registers depending on the use frequency band, the ambient temperature, and the device individual difference. By controlling the loop gain and the response characteristic to optimum values, a good suppression characteristic in a wide frequency band is achieved. | 2009-01-22 |
20090021313 | VOLTAGE CONTROLLED OSCILLATOR CAPABLE OF OPERATING IN A WIDE FREQUENCY RANGE - A voltage controlled oscillator includes a first NMOS transistor having a base terminal configured to receive an input signal INP and a drain terminal connected to an output node OUTN, a second NMOS transistor having a base terminal configured to receive an input signal INN and a drain terminal connected to an output node OUTP, a third NMOS transistor having a source terminal connected to a low voltage supply VSS and a drain terminal connected to source terminals of the first NMOS transistor and the second NMOS transistor. A first PMOS transistor includes a base terminal connected to the output node OUTP and a drain terminal connected to the output node OUTN. A second PMOS transistor includes a base terminal connected to the output node OUTN and a drain terminal connected to the output node OUTP. | 2009-01-22 |