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Reference Voltage patents



      
           
This page is updated frequently with new Reference Voltage-related patent applications. Subscribe to the Reference Voltage RSS feed to automatically get the update: related Reference RSS feeds. RSS updates for this page: Reference Voltage RSS RSS


Capacitive sensing

Buffer circuit

2-phase switched capacitor flash adc

Date/App# patent app List of recent Reference Voltage-related patents
08/28/14
20140244194
 Test apparatus of display, method and computer readable medium patent thumbnailnew patent Test apparatus of display, method and computer readable medium
A test apparatus for a display includes an interface transmitting characteristic information including a resolution of the display unit and each equivalent model of a plurality of pixels, a reference voltage model including a plurality of reference voltages respectively corresponding to a plurality of pixels included in a unit region of the display unit, and pixel information including a position of a plurality of pixels to be tested among a plurality of pixels, a pixel model generator that schematizes a plurality of pixels into a plurality of test pixels and at least one equivalent load pixel according to the characteristic information and the pixel information to generate a pixel model, and a voltage mapper that maps the reference voltage model to the pixel model to calculate test voltages respectively corresponding to a plurality of test pixels and the equivalent load pixel.. .
08/28/14
20140241070
 Reference and sensing with bit line stepping  method of memory patent thumbnailnew patent Reference and sensing with bit line stepping method of memory
A sensing method for a memory is provided. The memory includes: a memory cell; a reference circuit generating a reference voltage and a clamp voltage; and a current supplying circuit receiving the clamp voltage to develop a cell current passing through the memory cell to form a cell voltage, wherein the cell voltage is used for incorporating with the reference voltage to determine the information stored in the memory..
08/28/14
20140241056
 Reduced complexity reliability computations for flash memories patent thumbnailnew patent Reduced complexity reliability computations for flash memories
Methods and apparatus are provided for computing reliability values, such as log likelihood ratios (llrs), with reduced complexity for flash memory devices. Data from a flash memory device that stores m bits per cell using 2̂m possible states is processed by obtaining at least two soft read voltage values corresponding to two reference voltages v0 and v1, wherein the two reference voltages v0 and v1 are between two adjacent states of the 2̂m possible states; and converting the at least two soft read voltage values to a log likelihood ratio for a region between the two reference voltages v0 and v1 using probability density functions only for the two adjacent states.
08/28/14
20140240966
 Supplemental, backup or emergency lighting systems and methods patent thumbnailnew patent Supplemental, backup or emergency lighting systems and methods
A supplemental lighting system includes a charging circuit having a reference voltage for the charging circuit set through changes to reference resistances, and/or having an output voltage, current or power set through a connector configuration. In one example, a battery storage connector can be used to select a particular resistance for setting the reference voltage.
08/28/14
20140240883
 Over-limit electrical condition protection circuits and methods patent thumbnailnew patent Over-limit electrical condition protection circuits and methods
Apparatuses and methods for protecting a circuit from an over-limit electrical condition are disclosed. One example apparatus includes a protection circuit coupled to a circuit to be protected.
08/28/14
20140240873
 Switching power supply circuit with protective function patent thumbnailnew patent Switching power supply circuit with protective function
A switching power supply circuit includes a transformer having primary, secondary and tertiary windings; a primary-side rectifying-and-smoothing circuit that converts ac power to dc power then smoothes it; a secondary-side rectifying-and-smoothing circuit that smoothes secondary-side power; a tertiary-side rectifying-and-smoothing circuit that smoothes power from the tertiary winding; a switching circuit that switches the primary winding; a pulse width control circuit that controls the switching of the switching circuit; an output-error detecting circuit that detects a deviation of a secondary-side dc output voltage from a reference voltage; and a ripple-voltage detecting-and-controlling circuit that detects a ripple-voltage of the secondary-side dc output voltage and stop-controls the output-error detecting circuit, wherein a stop-control signal from the ripple-voltage detecting-and-controlling circuit causes the output-error detecting circuit to stop outputting, then a drive signal to the switching circuit is stopped, thus the operation of the switching power supply circuit is stopped.. .
08/28/14
20140240870
 Analog tunneling current sensors for use with disk drive storage devices patent thumbnailnew patent Analog tunneling current sensors for use with disk drive storage devices
Amplifier architectures are provided for current sensing applications. An amplifier includes a load device, an operational amplifier, a current source, and a bipolar transistor.
08/28/14
20140240439
 Laser light control device and image forming apparatus patent thumbnailnew patent Laser light control device and image forming apparatus
A laser light control device includes: a photodiode disposed, along with a semiconductor laser, at a location capable of receiving laser light reflected on a polygon mirror after emitted from the semiconductor laser can be received; a semiconductor laser drive control section; and a comparison circuit configured to compare an output voltage of the photodiode and a reference voltage corresponding to a reference amount of light of the semiconductor laser. The semiconductor laser drive control section uses a timing with which the semiconductor laser drive control section receives from the comparison circuit an output indicating that the voltage output from the photodiode is larger than the reference voltage to generate a light emission start timing with which the semiconductor laser starts to emit laser light based on an image signal..
08/28/14
20140240158
 Ad converter and ad conversion method patent thumbnailnew patent Ad converter and ad conversion method
An a/d converter includes a plurality of ad converting sections that sequentially operate at predetermined intervals. The ad converting section has an adc that converts an analog signal into a digital signal and outputs the digital signal, a memory that stores, as a specific polarity value, the polarity of a signal obtained by the adc digitizing an analog signal at a reference voltage, an analog polarity converting circuit that inverts the polarity of the analog signal based on the specific polarity value and a set polarity value, which is previously set, and a digital polarity converting circuit that inverts the polarity of the digital signal based on the specific polarity value and the set polarity value..
08/28/14
20140240155
 2-phase switched  capacitor flash adc patent thumbnailnew patent 2-phase switched capacitor flash adc
An input stage for a switched capacitor analog-to-digital converter has a differential voltage input receiving an input voltage, a differential reference voltage input receiving a chopped reference voltage, a common voltage connection, and a differential output. A pair of input capacitors is coupled between the differential voltage input and the differential output and a pair of reference capacitors is coupled between the differential reference voltage input.
08/28/14
20140240049
new patent Bias circuit and amplifier controlling bias voltage
There are provided a bias circuit and an amplifier controlling a bias voltage, the bias circuit and the amplifier including a control voltage generating unit generating a control voltage using a reference voltage, a bias voltage generating unit generating a bias voltage according to the control voltage, and a voltage drop unit dropping the bias voltage from the bias voltage generating unit to a base voltage so as to provide the base voltage to an amplifying unit, wherein the control voltage generating unit controls the control voltage according to an amplitude of a high-frequency signal input to the amplifying unit.. .
08/28/14
20140240038
new patent Reference voltage generation circuit
Provided is a reference voltage generation circuit that has a flat temperature characteristic even when there are fluctuations in manufacturing step. After a semiconductor manufacturing process is finished, electrical characteristics of a semiconductor device are evaluated.
08/28/14
20140240037
new patent Buffer circuit
A buffer circuit includes a first current mirror circuit, a second current mirror circuit, a first transistor, and a second transistor. The first current mirror circuit passes a first mirror current through a second node, corresponding to a first current passed through a first node, and is activated based on a first activating signal.
08/28/14
20140239983
new patent Capacitive sensing
A capacitive sensing system includes a controller, a node connected to one side of a capacitance, the controller configured to measure the capacitance by measuring a time for a voltage across the capacitance to reach a predetermined reference voltage, and the controller causing the time period for capacitance measurements to vary even when the capacitance is constant.. .
08/28/14
20140239980
new patent Capacitance type occupant detection sensor
A capacitance type occupant detection sensor includes (i) a capacitive sensor, (ii) a voltage application portion, (iii) a current detector, (iv) a capacitance detector, and (v) a determination portion. The capacitive sensor includes a detection electrode and is disposed to a seat.
08/28/14
20140239977
new patent Capacitive sensing
A capacitive sensing system includes a controller, a node connected to one side of a capacitance, the controller configured to measure the capacitance by measuring a time for a voltage across the capacitance to reach a predetermined reference voltage, a noise measurement circuit configured to measure electrical noise on the node, and the controller receiving the measurement of noise from the noise measurement circuit.. .
08/28/14
20140239936
new patent Reference circuit arrangement and method for generating a reference voltage
Reference circuit arrangement according to this invention comprises a branched current path (be) connecting a first and second terminal (t+, t−) via an intermediate terminal (tn). The intermediate terminal (tn) is connected to a reference terminal (gnd).
08/28/14
20140239929
new patent Low dropout regulator
A low dropout regulator comprises an output transistor (mpout) with a controlled section coupled between a first supply terminal (vs) and an output terminal (out), and a differential amplifier that comprises a feedback input (vfb) coupled to the output terminal (out), a reference input (vr) for receiving a reference voltage, an output (dout) connected to a control terminal of the output transistor (mpout), and at least one pair of input transistors (m1, m2, m1a, m2a, m1b, m2b). The input transistors (m1, m2, m1a, m2a, m1b, m2b) of each pair are commonly connected to a tail current source (iab, ia, ib) of the respective pair.
08/28/14
20140239925
new patent Inductor current emulation circuit for a switching converter
An inductor current emulation circuit for use with a switching converter in which regulating the output voltage includes comparing an output which varies with the difference between the output voltage and a reference voltage with a ‘ramp’ signal which emulates the current in the output inductor. A current sensing circuit produces an output which varies with the current in the switching element that is turned on during the ‘off’ time, an emulated current generator circuit produces the ‘ramp’ signal during both ‘off’ and ‘on’ times, a comparator circuit compares the ‘ramp’ signal with at least one threshold voltage which varies with the sensed current and toggles an output when the ‘ramp’ exceeds the thresholds, and a feedback circuit produces an output which adjusts the ‘ramp’ signal each time the comparator circuit output toggles until the ‘ramp’ signal no longer exceeds the threshold voltages..
08/28/14
20140239899
new patent Battery system balancing control method for performing balancing control with aid of reference voltage information and battery system thereof
A battery system balancing control method for performing balancing control with aid of reference voltage information and battery system are provided. The battery system balancing control method includes: after a specific reference resistor of a plurality of reference resistors is installed into a specific battery module of a set of battery modules connected in series within a power supply device and the reference resistors are electrically connected in series, converting a total voltage of the set of battery modules into the reference voltage information, wherein each battery module of the set of battery modules includes at least one battery cell, and the reference voltage information includes a plurality of sets of reference voltage levels respectively corresponding to the reference resistors; and performing balancing control of the specific battery module according to a set of reference voltage levels corresponding to the specific reference resistor within the sets of reference voltage levels..
08/28/14
20140239846
new patent Organic electroluminescence device
An organic el device comprising: an organic el element; a first transistor that controls a drive current of the organic el element in accordance with a brightness adjustment voltage; and a temperature correction circuit that corrects the brightness adjustment voltage in accordance with a temperature; wherein the temperature correction circuit includes: a second transistor that has a same temperature characteristic as the first transistor; a resistor element that is connected to the second transistor; and an operational amplifier that controls the second transistor such that a predetermined reference voltage and a voltage across the resistor element become equal to each other; wherein the temperature correction circuit corrects the brightness adjustment voltage in accordance with an output from the operational amplifier.. .
08/28/14
20140239824
new patent Led controlling circuit with high power factor and an led lighting device
The present invention is suitable for an led controlling field, and provides an led controlling circuit with high power factor and an led lighting device. In the present invention, by using an led current controlling circuit with high power factor comprising a plurality of output current controlling modules, a resistor re and a reference voltage generating module, the led groups is driven accordingly in a piecewise manner to be on and a current flows through the led groups according to the input voltage of the led strip, without sampling the input voltage of the led strip by a sampling circuit and without increasing the number of high cost component, which increase the utilization of the led, the power factor of the whole led controlling circuit and the efficiency of the system, thereby solving the problem of low power factor and low efficiency system existing in the prior art..
08/21/14
20140233964
Method for generating an optimized return-to-zero pulse shape against aggressive optical filtering and an optical transmitter implementing the method
An optical transmitter comprises: first and second sets of optical in-phase and quadrature modulators; an integrable tunable laser assembly; a first polarization beam splitter that is configured to divide the continuous-waveform optical signal into a x-polarized tributary and a y-polarized tributary, each of the x-polarized tributary and the y-polarized tributary is modulated by one of the first and second sets of optical in-phase and quadrature modulators in accordance with the two respective input signals; a second polarization beam splitter that is configured to combine the modulated x-polarized tributary and the modulated y-polarized tributary into one optical signal; and an optical modulator that is configured to modulate the combined optical signal using a driving voltage, wherein the driving voltage has a bias point that is reduced by a predefined offset from a predefined reference voltage level.. .
08/21/14
20140233326
Low-voltage current sense amplifer
In one embodiment, an integrated programmable device has a plurality of current sense amplifiers for reading data from non-volatile memory and a reference generator that provides common bias reference voltages to the sense amplifiers. The sense amplifiers can read data from the non-volatile memory at low power supply voltage levels (e.g., 750 mv) relative to the nominal supply level (e.g., 1.2v).
08/21/14
20140233272
System and method for synchronous rectifier
A synchronous rectification circuit for a power supply includes a power switch for coupling to a secondary winding of a transformer of the power supply and an output capacitor of the power supply. The power switch includes a four-terminal mosfet having a source, a drain, a gate, and a body.
08/21/14
20140232755
Driving circuit and display device of using same
In one aspect of the invention, a driving circuit has a pcb, a transmitter disposed on the pcb for providing an input signal, first and second transmission lines disposed on the pcb and electrically coupled to the transmitter for transmitting the input signal, and a plurality of source drivers formed in a cof architecture disposed between the pcb and the display panel. The input signal is an encoded signal including first and second gamma reference voltages control signals, and image data.
08/21/14
20140232710
Apparatus, system, and method for voltage level switching
Various embodiments include apparatus, systems, and methods having a reference node to receive a reference voltage, a first node to provide a signal, and a circuit. Such a circuit may include a second node to receive different voltages greater than the reference voltage and to cause the signal at the first node to switch between a first voltage greater than the reference voltage and a second voltage greater than the reference voltage.
08/21/14
20140232579
Low power quantizer for analog to digital converter
A quantizer includes a voltage reference network and a set of comparators coupled with the voltage reference network. The voltage reference network generates a plurality of reference voltages.
08/21/14
20140232472
Method and device for protecting a high-frequency power amplifier against a termination fault
A mismatch protection circuit for high frequency power amplifiers includes a waveguide coupler connected to the output of the high frequency power amplifier. The waveguide coupler includes a first detector diode, which supplies, according to the power level being applied, a first voltage, which corresponds to the effective power that is fed in.
08/21/14
20140232459
Bias circuit and amplifier with current limit function
There are provided a bias circuit and an amplifier having a current limit function, including: a control voltage generating unit generating a control voltage using a reference voltage; a bias voltage generating unit generating a bias voltage according to the control voltage; and a bias current limit unit controlling the control voltage according to a bias current of the bias voltage generating unit.. .
08/21/14
20140232457
Fast, low power comparator with dynamic bias background
A comparator circuit comprising an operational amplifier configured to compare a difference between a switching voltage and a reference voltage, and a dynamically adjustable bias current generator coupled to the operational amplifier. A method of conserving power in a comparator circuit includes estimating a switching regulator load current value, communicating the value to a current bias generator, enabling the bias generator with a signal from a switching regulator pfm logic circuit, and establishing a bias current at an operational amplifier of the comparator circuit on the basis of the enabling..
08/21/14
20140232453
Circuit for generating reference voltage
Provided is a circuit for generating a reference voltage. The circuit includes a band gap circuit generating a first current having a size that increases in proportion to an absolute temperature and a second current having a size that decreases in proportion to the absolute temperature, and outputting a reference voltage based on the first current and the second current; a mirroring circuit mirroring a sum of the first current and the second current and outputting a mirroring voltage that is in proportion to the sum of the first current and the second current; and a start-up circuit receiving the mirroring voltage from the mirroring circuit and providing a driving current for generating the first current or the second current to the band gap circuit until a time when the first current starts to be generated in the band gap circuit..
08/21/14
20140232448
Semiconductor integrated circuit
A semiconductor integrated circuit including: a circuit block having an internal voltage line; an annular rail line forming a closed annular line around the circuit block and supplied with one of a power supply voltage and a reference voltage; and a plurality of switch blocks arranged around the circuit block along the annular rail line, the plurality of switch blocks each including a voltage line segment forming a part of the annular rail line and a switch for controlling connection and disconnection between the voltage line segment and the internal voltage line.. .
08/21/14
20140232435
Analog minimum or maximum voltage selector circuit
A circuit includes multiple input sub-circuits coupled to a common output node. Each input sub-circuit includes a transconductance cell.
08/21/14
20140232429
Device
A semiconductor device has a first controlled chip, including a first replica output circuit having the same configuration as a first output circuit, a first zq terminal connected to the first replica output circuit, a first through electrode connected to the first zq terminal, and a first control circuit which sets the impedance of the first replica output circuit. A control chip includes a second zq terminal connected to the first through electrode, a comparator circuit which compares a voltage of the second zq terminal with a reference voltage, and a second control circuit 123 which performs a process based on a comparison by the comparator circuit.
08/21/14
20140232388
Magnetic sensor device
Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of hall elements; a plurality of differential amplifiers to which the plurality of hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit..
08/21/14
20140232387
Magnetic sensor device
Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of hall elements; a plurality of differential amplifiers to which the plurality of hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit..
08/21/14
20140232364
Efficient regulation of capacitance voltage(s) in a switched mode multilevel power converter
A power conversion circuit uses smaller, cheaper, and faster analog and digital circuits, e.g., buffers, comparators, and processing circuits, to provide the information necessary to control a multilevel power converter faster, cheaper, and with a smaller footprint than conventional techniques. For example, a current detection circuit indirectly measures a direction of a current through an inductor connected between midpoint node and an output node of a multilevel power converter based on comparisons between voltages associated with the multilevel power converter.
08/21/14
20140232363
Step-down regulator
The step-down regulator includes a first error amplifying circuit that receives a first reference voltage and the first voltage and supplies a first control signal to a control terminal of the first transistor so that the first reference voltage and the first voltage are equal to each other. The step-down regulator includes a second error amplifying circuit that receives a voltage at the second end of the current controlling circuit and a second reference voltage and supplies a second control signal to the current controlling circuit so that the voltage at the second end of the current controlling circuit and the second reference voltage are equal to each other.
08/21/14
20140232359
Resonance-based single inductor output-driven dc-dc converter and method
A resonance-based dc-dc converter for converting a dc input voltage to a first dc output voltage (vout1) on a output conductor (9) includes an inductor (l) having a first terminal connected to a source (2) of a dc input voltage (vin) and a second terminal coupled to a first conductor (4) and a capacitor (cres) having a first terminal coupled to the first conductor. A first switch (sw1) is coupled between the resonance conductor and the output conductor to conduct inductor current (il) into the output conductor during a first phase (phase1).
08/21/14
20140232278
Light emitting diode driver
A driver circuit for driving light emitting diodes (leds). The driver circuit includes: a string of leds divided into n groups, the n groups of leds being electrically connected to each other in series, a downstream end of group m−1 being electrically connected to the upstream end of group m, where m is a positive number equal to or less than n.
08/21/14
20140232199
Apparatus and method for detecting foreign object in wireless power transmitting system
The present invention provides an apparatus and method for detecting a foreign object in a wireless power transmitting system. The wireless power transmitting apparatus measures an initial transmission power transmitted from the primary core block and performs foreign object detection on the basis of the initial transmission power, once it is found that an initial voltage of an output terminal of the wireless power receiving apparatus connected to an external load is within the range of a reference voltage.
08/14/14
20140229062
Power supply voltage monitoring circuit, sensor circuit for vehicle, and power steering apparatus
First and second microcomputers are connected to a ground. A first reference voltage generation circuit is connected between a first power supply and the first microcomputer, and supplies a first reference voltage to the first microcomputer when voltage of the first power supply is higher than the first reference voltage.
08/14/14
20140226749
Reduced wiring requirements with signal slope manipulation
A method includes manipulating at least one electric signal received from one or more electronic components to provide a slope substantially proportional to a discrete integer data value of n discrete integer data values, n being a positive integer greater than or equal to 3, said discrete integer data value represented by using one of n distinct slopes, said one of n distinct slopes to be transmitted utilizing a particular reference voltage of n predetermined reference voltages. The method further includes transmitting data as the particular reference voltage of the n predetermined reference voltages to at least one electronic component utilizing slope manipulation..
08/14/14
20140226424
Memory device and corresponding reading method
An electrically erasable and programmable non-volatile memory device includes memory cells arranged in rows and columns, and each column of memory cells is associated with a respective local bit line. The local bit lines are divided into packets of local bit lines, each packet of local bit lines associated with a respective main bit line.
08/14/14
20140226398
Systems and methods to update reference voltages of non-volatile memory
A data storage device includes non-volatile memory and a controller. The controller is configured to read first data from the non-volatile memory.
08/14/14
20140226241
Electrostatic discharge protection
A chip includes a first die, a second die, a first and a second through-silicon vias, a first protection circuit, and a second protection circuit. The first die has a first operational voltage node and a first reference voltage node.
08/14/14
20140225942
Method for adjusting gamma curve and gamma voltage generator and display control system therof
A method for adjusting a gamma curve used in a display control system of a display apparatus, and the method comprises steps of: analyzing each sub pixel gray value distribution of each color in a frame; and adjusting at least a gamma reference voltage according to the sub pixel gray value distribution of the color, such that a gray level voltage number corresponding to the sub pixel gray values in at least a predetermine region which has the relative large statistical number or ratio is increased, and a gray level voltage number corresponding to the sub pixel gray values in at least a predetermine region which has the relative low statistical number or ratio is decreased.. .
08/14/14
20140225878
Pixel structure and driving method thereof
A pixel structure and a driving method thereof are disclosed. The pixel structure includes a first capacitor, an input unit, a compensation unit, a pixel driving unit, a resetting unit, a light-emitting diode, a light-emitting activation unit and a coupling unit.
08/14/14
20140225582
Voltage generation circuit which is capable of executing high-speed boost operation
According to one embodiment, a voltage generation circuit includes a first boost circuit, a voltage division circuit, a first detection circuit, a capacitor and a first switch. The first boost circuit outputs a first voltage.
08/14/14
20140225580
Low-dropout regulator and method for voltage regulation
A low-dropout regulator (1) comprises a differential amplifier (3) with a reference input (5) for applying a reference voltage (vin), a feedback input (7) and an amplifier output (9). An output transistor (11) has a control connection (13) connected to the amplifier output (9), and a control section connected between a first supply potential terminal (vdd) and a voltage output (15) of the low-dropout regulator (1).
08/14/14
20140225525
Constant-power power supply apparatus and method of supplying constant-power power
A power supply apparatus for applying a method of supplying a loading with an electric power within a predetermined range of a default power, which includes a driving unit, a voltage sensing unit, and a feedback control unit. The driving unit receives power from a power source, and supplies the loading with a working voltage and a working current; the voltage sensing unit detects the working voltage; the feedback control unit keeps a plurality of reference voltages, wherein each two neighboring reference voltages are defined to have a voltage section therebetween.
08/14/14
20140224961
Light sensor
A light sensor is provided that includes an exposed light transducer for accumulating charge in proportion to light incident thereon over an integration period; and a light-to-pulse circuit in communication with the exposed light transducer, the light-to-pulse circuit operative to output a pulse having a pulse width based on the charge accumulated by the exposed light transducer. The light-to-pulse circuit may include a one shot logic circuit that contributes to generation of the pulse.
08/07/14
20140218990
Power factor correction device and correcting method thereof
A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronize phase of alternating current voltage and input current.. .
08/07/14
20140218985
Control of energy storage system inverter system in a microgrid application
A system that manages a supplemental energy source connected to a power grid uses a two stage control strategy to manage power transfers in and out of the power grid as well as in and out of an energy storage system, such as a battery bank. One stage uses a non-linear transfer function to control an output frequency of a dc-to-ac inverter to limit undesired effects of power transients that occur on the grid.
08/07/14
20140218830
Over-limit electrical condition protection circuits for integrated circuits
Protection circuits and methods for protecting an integrated circuit against an over-limit electrical condition are provided. One example includes a snapback circuit having at least a portion formed in an isolated doped well region and configured to switch to a low impedance state in response to an input exceeding a trigger condition and further having a control circuit coupled to a reference voltage and further coupled to the isolated doped well region and the portion of the snapback circuit formed in the doped well region.
08/07/14
20140218655
Liquid crystal display
A display device includes a gate line and a data line crossing the gate line. The display device further includes a first switching element and a second switching element each connected to the gate line and the data line.
08/07/14
20140218162
Electric field resistor
An electric field resistor includes n coils. N coils encircle a common center in sequence, and each of the coils has a first terminal and a second terminal, wherein the first terminal of the first coil receives a first reference voltage, the second terminal of the nth coil receives a second reference voltage.
08/07/14
20140218112
Compensation circuitry and method for amplifiers driving large capacitive loads
An operational amplifier (10) capable of driving a capacitive load (cload) and/or a resistive load (rload) includes a first gain stage (2) having an output coupled to a high impedance node (3) and a second gain stage (5) having an input coupled to the first high impedance node. A gain reduction resistor (rd) and an ac coupling capacitor (cd) are coupled in series between the high impedance node and a reference voltage.
08/07/14
20140218110
Sensing amplifier using capacitive coupling to realize dynamic reference voltage
A sensing amplifier using capacitive coupling and a dynamic reference voltage, where the sensing amplifier circuit includes a bit line, configured to receive charging and discharging signals; a sensing amplifier, connected to the bit line and configured to receive the bit line and a reference voltage for comparison and configured to enlarge the voltage difference between a high point and a low point; and a reference voltage generator, connected to the sensing amplifier to generate the reference voltage required for the sensing amplifier to compare. The sensing amplifier effectively enhances sensing margin of the sensing amplifier circuit; and in addition, to accelerate the access speed, the sensing amplifier can easily determine the correct stored data and further quickly solve the problems of high-speed storing the data by the storage units..
08/07/14
20140218087
Wide bandwidth resonant global clock distribution
A wide bandwidth resonant clock distribution comprises a clock grid configured to distribute a clock signal to a plurality of components of an integrated circuit, a tunable sector buffer configured to receive the clock signal and provide an output to the clock grid, at least one inductor, at least one tunable resistance switch, and a capacitor network. The tunable sector buffer is programmable to set latency and slew rate of the clock signal.
08/07/14
20140218004
Integrated circuit with multi-functional parameter setting and multi-functional parameter setting method thereof
An integrated circuit with multi-functional parameter setting and a multi-functional parameter setting method thereof are provided. The multi-functional parameter setting method includes the following steps: providing the integrated circuit, wherein the integrated circuit includes a multi-functional pin and a switch unit, wherein the multi-functional pin is coupled to an external setting unit, and the switch unit includes an operational amplifier; sensing a programmable reference voltage of the external setting unit through one operation of the switch unit and executing a first function setting according to the programmable reference voltage; and sensing a programmable reference current related to the external setting unit through another operation of the switch unit and executing a second function setting according to the programmable reference current, wherein a value of the programmable reference current is related to the programmable reference voltage..
08/07/14
20140217994
Electronic device with fast charging circuit
An electronic device includes a pre-charging circuit and a battery. The pre-charging circuit is electrically connected to an external power supply and continually charges the battery of the electronic device.
08/07/14
20140217963
Protective circuit
A protective circuit is provided. The protective circuit includes a charging unit, a voltage regulating unit, and a comparing unit.
08/07/14
20140217890
Handheld device and power supply circuit thereof
A handheld device includes a backlight driving unit and a power supply circuit for powering the backlight driving unit. The power supply circuit includes a power management unit, a battery, a first electronic switch, a second electronic switch, and a control unit.
07/31/14
20140211562
Flash memory and associated programming method
A flash memory includes a program voltage generator, plural memory units, a current limiter, and a multi-bit program control unit. The program voltage generator is used for providing a constant program voltage during a detecting cycle and providing a dynamically-adjustable program voltage during a program cycle.
07/31/14
20140210557
Bias circuit
Proposed is a bias circuit for a transistor in a c class amplifier. The bias circuit comprises: a class ab amplifier bias voltage generating means adapted to generate a bias voltage at an output terminal; and a transistor connected between the output terminal and a first reference voltage, the control terminal of the transistor being connected to a second reference voltage via a switch.
07/31/14
20140210544
Monitor circuit, semiconductor integrated circuit, semiconductor device, and method of controlling power supply voltage of semiconductor device
A monitor circuit includes a reference voltage generating unit that generates first and second reference voltages, a first amplifier unit that amplifies a differential voltage between the first reference voltage and the second reference voltage, a second amplifier unit that amplifies a differential voltage between an internal power supply voltage being supplied to a functional block provided in the semiconductor integrated circuit and the first reference voltage, and a comparator unit that compares an amplification result of the first amplifier unit with an amplification result of the second amplifier unit and outputs a comparison result as a measurement result.. .
07/31/14
20140210540
Power line carrier communication reception circuit
The power line carrier communication reception circuit may include an amplifier which is connected to a power line and amplifies a received signal to be superimposed on the power line; two capacitors which are connected in series between both power sources of the amplifier; and a clipper circuit which connects connection points of these capacitors to the power line and limits the received signal in a predetermined range of a reference voltage between the capacitors, and in which the amplifier compares the signal limited by the clipper circuit and the reference voltage and amplifies the signal.. .
07/31/14
20140210444
Switching power-supply device
A switching power-supply device includes a main switching element connected between a power-supply and an output terminal; a driving circuit that drives the main switching element; a capacitor that feeds power to the driving circuit; a charging circuit that charges the capacitor when the main switching element is switched from an on-state to an off-state; a switching control circuit that performs switching control of alternately switching the main switching element to the on-state and the off-state via the driving circuit; a voltage detection circuit that detects a voltage between both ends of the capacitor, and a driving control circuit that switches a state of prohibiting driving of the main switching element and a state of permitting driving of the main switching element, based on a difference between an output voltage output from the output terminal and a preset reference voltage and the voltage between both ends of the capacitor.. .
07/31/14
20140210435
Regulator
A regulator includes a first transistor, a first bias circuit, a second bias circuit, a differential circuit having second to fifth transistors, and a current mirror circuit. The first transistor outputs an output voltage lower than the input voltage.
07/31/14
20140210432
Voltage adjusting circuit for amplifier circuit and method thereof
A voltage adjusting circuit includes a reference voltage generating circuit, a subtractor circuit, a threshold generating circuit and a comparator circuit. The voltage adjusting circuit may provide power supply signals to an amplifier circuit so that the amplifier circuit may provide an output signal to a load according to an input signal.
07/31/14
20140210358
Light emitting diode driving circuit
An light emitting diode driving circuit includes an inductor having one end receiving a pulse dc voltage input and another end forwardly-biased and electrically; a power switch connected to another end of the inductor and a first amplifier circuit; the first amplifier circuit serving for converting a first current flowing through the power switch into a first voltage; a second amplifier circuit serving for converting a second current flowing through the led module into a second voltage; and a comparator circuit comparing the first voltage with a reference voltage; when the first voltage being smaller than the reference voltage, the power switch is conducted; otherwise it is not conducted; the comparator circuit further comparing a second voltage with the reference voltage, when the second voltage is greater than the reference voltage, the power switch is not conducted continuously; otherwise, it is conducted. Thereby, the led module is driven..
07/31/14
20140210353
High efficiency led driving circuit and driving method
In one embodiment, an led driving circuit can include: (i) a sense circuit configured to sense an inductor voltage, and to generate a sense voltage signal; (ii) a protection control circuit configured to activate a first protection control signal in response to a comparison of the sense voltage signal against a first reference voltage to indicate an led device is in a first load state; (iii) the protection control circuit being configured to activate a second protection control signal in response to a comparison of the sense voltage signal against a second reference voltage to indicate the led device is in a second load state; and (iv) a pwm control circuit configured to control a power switch according to the first protection control signal or the second protection control signal, based on the load state of the led device.. .
07/31/14
20140210100
Conductive line routing for multi-patterning technology
A method comprises: forming a plurality of reference voltage patterns in a first layer of a semiconductor substrate using a first mask, the reference voltage patterns including alternating first reference voltage patterns and second reference voltage patterns; and forming a plurality of signal patterns in the first layer of the semiconductor substrate using a second mask, ones of the plurality of signal patterns located between successive pairs of reference voltage patterns.. .


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Reference Voltage topics: Reference Voltage, Voltage Controlled Current Source, Lighting Apparatus, Enhancement, Feedback Signal, Soft Start Circuit

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