FreshPatents.com Logo
Enter keywords:  

Track companies' patents here: Public Companies RSS Feeds | RSS Feed Home Page
Popular terms

[SEARCH]

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

Follow us on Twitter
twitter icon@FreshPatents

Web & Computing
Cloud Computing
Ecommerce
Search patents
Smartphone patents
Social Media patents
Video patents
Website patents
Web Server
Android patents
Copyright patents
Database patents
Programming patents
Wearable Computing
Webcam patents

Web Companies
Apple patents
Google patents
Adobe patents
Ebay patents
Oracle patents
Yahoo patents

[SEARCH]

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


Apparatus and methods of driving signal for reducing the leakage current

Ink level sensor and related methods

Sigma-delta modulator with trimmed reference voltage for quantizer

Date/App# patent app List of recent Reference Voltage-related patents
07/24/14
20140204720
 Constant voltage circuit and analog electronic clock patent thumbnailConstant voltage circuit and analog electronic clock
There are provided a constant voltage circuit that features low current consumption and stable operation, and an analog electronic clock provided with the constant voltage circuit. The constant voltage circuit includes a differential amplifier circuit which is turned on/off by a predetermined signal and which controls the voltage of a gate of an output transistor on the basis of a reference voltage and a feedback voltage that are received, a switch circuit which is connected to an output terminal of the differential amplifier circuit and which is turned on/off by a predetermined signal, and a voltage holding circuit which is connected between the gate of the output transistor and a power supply terminal and which has a resistor and a capacitor connected in series.
07/24/14
20140204689
 Apparatus and methods of driving signal for reducing the leakage current patent thumbnailApparatus and methods of driving signal for reducing the leakage current
Apparatus and methods for driving a signal are disclosed. An example apparatus includes a pre-driver circuit and a driver circuit.
07/24/14
20140204148
 Ink level sensor and related methods patent thumbnailInk level sensor and related methods
In an embodiment, a method of sensing an ink level includes applying a pre-charge voltage vp to a sense capacitor to charge the sense capacitor with a charge q1, sharing q1 between the sense capacitor and a reference capacitor, causing a reference voltage vg at the gate of an evaluation transistor, and determining a resistance from drain to source of the evaluation transistor that results from vg.. .
07/24/14
20140203955
 Sigma-delta modulator with trimmed reference voltage for quantizer patent thumbnailSigma-delta modulator with trimmed reference voltage for quantizer
A sigma delta modulator includes a first circuit that receives an analog signal and provides an intermediate signal and a first quantizer signal and further includes a first quantizer that receives the first quantizer signal and provides a first quantizer output. Also included are a second input circuit that receives the intermediate signal and provides a second quantizer signal and a second quantizer that receives the second quantizer signal and provides a second quantizer output.
07/24/14
20140203879
 Temperature controlled oscillator and temperature sensor including the same patent thumbnailTemperature controlled oscillator and temperature sensor including the same
A temperature controlled oscillator includes an oscillation unit and a filter unit. The oscillation unit is configured to generate at least one reference voltage based on a supply voltage and a ground voltage, and to generate an oscillation signal having a period varying according to a temperature, the oscillation unit configured to generate the oscillation signal based on a filter voltage and the at least one reference voltage.
07/24/14
20140203876
 Amplifier circuit patent thumbnailAmplifier circuit
An amplifier circuit is described comprising a first field effect transistor comprising a first source/drain terminal coupled to a first supply terminal, a second source/drain terminal coupled to an output of the amplifier circuit and a gate terminal; a second field effect transistor comprising a first source/drain terminal coupled to an input of the amplifier circuit, a second source/drain terminal coupled to the gate terminal of the first field effect transistor and a gate terminal; a third field effect transistor comprising a first source/drain terminal coupled to a first bias current source of the amplifier circuit, a second source/drain terminal and a gate terminal coupled to its first source/drain terminal and the gate terminal of the second field effect transistor; a fourth field effect transistor comprising a first source/drain terminal coupled to a second bias current source, a second source/drain terminal coupled to a second supply terminal and a gate terminal coupled to the second source/drain terminal of the third field effect transistor; and a control circuit coupled to the gate of the fourth field effect transistor configured to control the source drain voltage of the fourth field effect transistor by means of the gate of the fourth field effect transistor to be equal to a reference voltage.. .
07/24/14
20140203865
 Output buffers patent thumbnailOutput buffers
An output buffer is provided. The output buffer is coupled to a first voltage source providing a first supply voltage and used for generating an output signal at an output terminal according to an input signal.
07/24/14
20140203844
 System of providing multiple voltage references to a radio-frequency device using a single analog line patent thumbnailSystem of providing multiple voltage references to a radio-frequency device using a single analog line
A system includes a control board, a controlled board, and a connector connecting the control board to the controlled board. The control board includes a processing unit that configures the reference voltage signals, a non-volatile memory that stores information about the reference voltage signals, and a dac that outputs the reference voltage signals in accordance with instructions from the processing unit.
07/24/14
20140203794
 Methods and structures for dynamically calibrating reference voltage patent thumbnailMethods and structures for dynamically calibrating reference voltage
A bandgap reference system has a bandgap circuit, an operational transconductance amplifier, and an offset controller. The bandgap circuit includes a pair of diode devices and has a reference terminal at which is provided a bandgap reference voltage.
07/24/14
20140203722
 Ac led lighting apparatus using voltage edge detector patent thumbnailAc led lighting apparatus using voltage edge detector
An ac led lighting apparatus using a voltage edge detector is provided. The ac led lighting apparatus includes: a rectification unit configured to rectify an ac voltage to output a dc rectified voltage; an led unit including a first light emitting group and a second light emitting group each including at least one led; and an led driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage.
07/24/14
20140203718
Ac led lighting apparatus using voltage edge detector
Exemplary embodiments of the present invention disclose an alternating current (ac) light emitting diode (led) lighting apparatus including a rectification unit configured to receive an ac voltage and output a dc rectified voltage, an led unit connected to the rectification unit, the led unit comprising at least two light emitting groups, each light emitting group comprising at least one led, and an led driving control unit connected to the rectification unit, the led driving control unit configured to establish a series or parallel connection between the light emitting groups, by comparing a voltage level of the rectified voltage with a reference voltage. The led driving control unit is configured to calculate a reference voltage adjustment value in order to compensate for a signal processing delay of the led driving control unit..
07/24/14
20140203330
Semiconductor integrated circuit
A semiconductor integrated circuit includes: a main-interconnect to which supply voltage or reference voltage is applied; a plurality of sub-interconnects; a plurality of circuit cells configured to be connected to the plurality of sub-interconnects; a power supply switch cell configured to control, in accordance with an input control signal, connection and disconnection between the main-interconnect and the sub-interconnect to which a predetermined one of the circuit cells is connected, of the plurality of sub-interconnects; and an auxiliary interconnect configured to connect the plurality of sub-interconnects to each other.. .
07/24/14
20140202437
Methods and systems for humidity and pcv flow detection via an exhaust gas sensor
Methods and systems are provided for estimating a pcv flow to an engine based on the output of an exhaust gas oxygen sensor. During dfso conditions, a reference voltage of the sensor is modulated initially with an intake throttle open and then with the intake throttle closed.
07/24/14
20140202426
Methods and systems for humidity detection via an exhaust gas sensor
Various methods and system are described for determining ambient humidity via an exhaust gas sensor disposed in an exhaust system of a variable displacement engine. A reference voltage of a sensor coupled to an inactive engine bank is modulated between a first and second voltage to estimate ambient humidity.
07/24/14
20140202135
Methods and systems for humidity detection via an exhaust gas sensor
Various methods and system are described for determining ambient humidity via an exhaust gas sensor disposed in an exhaust system of an engine. In one example, a reference voltage of the sensor is modulated between a first and second voltage during non-fueling conditions of the engine.
07/17/14
20140201580
Systems and methods to update reference voltages in response to data retention in non-volatile memory
A data storage device includes non-volatile memory and a controller. The controller is configured to, at a first time, determine a first count of storage elements having threshold voltages within a voltage range that corresponds to a first reference voltage.
07/17/14
20140201436
Dram memory interface
It is proposed a dram memory interface (40) for transmitting signals between a memory controller device (50) and a dram memory device (52). The dram memory interface comprises: data lines (44) for transmitting data signals; one or more control line(s) for transmitting control signals; one or more address line(s) for transmitting address signals; for each line, a transmitter device (41) connected to a first end of the line and a receiver device (42) connected to a second end of the line; wherein: each line is a single ended line wherein a signal transmitted on the line is referenced to a first reference voltage line (46); and —each line has an termination (z1, z2) on both the first and second ends of the line by connecting a first impedance (z1) to the first end of the line and a second impedance (z2) to the second end of the line..
07/17/14
20140198873
Communication device
An exemplary embodiment relates to a communication device. A communication device includes: a transmitting unit generating a first analog signal and a second analog signal based on an input signal; and a receiving unit including a first capacitor having a first terminal to which the first analog signal is input and a second capacitor having a first terminal to which the analog signal is input.
07/17/14
20140198559
Circuit and method for reading a resistive switching device in an array
A read circuit for sensing a resistance state of a resistive switching device in a crosspoint array utilizes a transimpedance equipotential preamplifier connected to a selected column line of the resistive switching device in the array. The equipotential preamplifier delivers a sense current while maintaining the selected column line at a reference voltage near a biasing voltage applied to unselected row lines of the array.
07/17/14
20140198421
Over temperature protection circuit
The present invention provides an over temperature protection circuit. The over temperature protection circuit includes a reference circuit and a hysteretic comparator.
07/17/14
20140197897
Precision oscillator with temperature compensation
New and highly stable oscillators are disclosed. Such an oscillator may include a first capacitor electrically connected to a first charging switch and a first discharging switch, a second capacitor electrically connected to a second charging switch and a second discharging switch, a first chopping circuit having a first input electrically connected to the first capacitor and a second input electrically connected to a reference voltage, a second chopping circuit having a first input electrically connected to the second capacitor and a second input electrically connected to the reference voltage, a first comparator having a first input electrically connected to a first and second output of the first chopping circuit, a second comparator having a first input electrically connected to a first and second output of the second chopping circuit, and control circuitry having a first input electrically coupled to an output of the first comparator and a second input electrically connected to an output of the second comparator..
07/17/14
20140197884
On-chip port current control arrangement
A port current control arrangement, constituted of: a current source arranged to generate a reference current or a predetermined value; an on-chip reference resistor, the generated reference current arranged to produce a reference voltage across the on-chip reference resistor; an on-chip sense resistor, a port current arranged to flow through the on-chip sense resistor and produce a sense voltage across the on-chip sense resistor, wherein the resistance of the on-chip sense resistor exhibits a predetermined relationship with the resistance of the first on-chip reference resistor; and a current control circuit, a first input of the current control circuit arranged to receive the produced reference voltage and a second input of the current control circuit arranged to receive the sense voltage, wherein the current control circuit is arranged to limit the port current to a value responsive to the received reference voltage and the received sense voltage.. .
07/17/14
20140197868
Driving circuit having built-in-self-test function
A driving circuit includes at least one reference voltage source, at least one offset unit, and at least one buffer module. The at least one reference voltage source generates a reference voltage.
07/17/14
20140197828
High frequency switch
When a switch is set to off, and a switch is set to on, the voltage of a sigout terminal is stabilized with a reference voltage, and a bias voltage is applied to a capacitor. Changing the switch from on to off, with the bias voltage retained in the capacitor, a detection signal which is input via a sigin terminal is amplified with the reference voltage as a reference, and an amplified signal is output from the sigout terminal..
07/17/14
20140197815
Tunneling current circuit
The purpose of the present invention is to provide a circuit that generates a reference voltage with little electrical power consumption, and that has the similar as conventional circuits. A bandgap reference circuit that, to generate an output voltage, adds a voltage proportional to a differential voltage when currents having different current densities are applied to a semiconductor junction, and a voltage proportional to a forward voltage occurring in a semiconductor junction, wherein the bandgap reference circuit is characterized in that the “voltage proportional to the differential voltage” is generated by a first tunneling current element to which the differential voltage is applied, circuits connected to a second tunneling current element or a serial circuit of second tunneling current elements, and a means to apply, to the second tunneling current element, a current proportional to the current applied to the first tunneling current element..
07/17/14
20140197808
Dc-dc converter
A dc-dc converter, adapted to control a converting circuit to convert an input voltage into an output voltage, is disclosed. The converting circuit comprises a switch module and an lc filter, the switch module is coupled to the input voltage, and the lc filter is coupled to the switch module and provides the output voltage.
07/17/14
20140197807
Reducing output voltage ripple of power supplies
Reducing output voltage ripple of power supplies. In some embodiments, an electronic circuit may include a first node configured to receive an input signal proportional to an output voltage produced by a power supply, a second node configured to receive a reference voltage configured to alternate between two voltage values during operation of the power supply, and a third node configured to output an enabling signal configured to control the operation of the power supply in response to a comparison between the input signal and the reference voltage.
07/17/14
20140197749
Ac led lighting apparatus using voltage edge detector
An ac led lighting apparatus using a voltage edge detector is provided. The ac led lighting apparatus includes: a rectification unit configured to rectify an ac voltage to output a dc rectified voltage; an led unit including a first light emitting group and a second light emitting group each including at least one led; and an led driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage.
07/17/14
20140197747
Current driver for led diodes
A current driver for a string of leds includes a first series connection of a first transistor and a first resistance and a second series connection of a second transistor and a second resistance. The first and second series connections are coupled in parallel between the string of leds and a voltage reference.
07/17/14
20140197379
Oled pixel structure and oled panel
The present disclosure provides an organic light emitting diode (oled) pixel structure and an oled panel. The pixel structure comprises a plurality of colored light emitting zones arranged in parallel.
07/10/14
20140192569
Overvoltage protection circuit
Apparatus and methods for generating an overvoltage signal from a bias winding signal of a power converter transformer are disclosed. In one example, an overvoltage protection circuit may include a current augmentation circuit and a detection circuit.
07/10/14
20140192561
Control circuit for switching power converters with synchronous rectifiers
A control circuit for switching power converters with synchronous rectifiers is disclosed for providing start-up and shut-down protection. The control circuit for switching power converters with synchronous rectifiers includes a means for blocking the driving signals to the synchronous rectifiers, a voltage sampling circuit, a reference voltage, and a comparator.
07/10/14
20140192096
Liquid crystal display device
Provided is a liquid crystal display device, including: a first analog power supply circuit that outputs, to each data signal line driving circuit, a first analog voltage generated based on a power supply voltage of an external power supply; a second analog power supply circuit that outputs a second analog voltage based on the first analog voltage; and a reference voltage generating circuit that generates a reference voltage based on the second analog voltage, in which the each data signal line driving circuit generates a gray-scale voltage based on the reference voltage.. .
07/10/14
20140191783
Pin driver circuit with improved swing fidelity
A circuit may include a controller, at least one bridge circuit, and a plurality of switches. The plurality of switches may be connected parallel to each other, each may have a switch output connected to the bridge circuit.
07/10/14
20140191739
Low drop-out regulator
Exemplary embodiments disclose a low drop-out regulator including an error amplification unit which includes a zero compensation circuit configured to compensate a plurality of poles which are generated by an output terminal and a buffer, the error amplification unit is configured to generate a first comparison signal in response to a reference voltage and a feedback voltage, the buffer is configured to generate a second comparison signal in response to the first comparison signal and an input voltage, a pass unit configured to provide an output voltage and a load current to the output terminal in response to the second comparison signal and the input voltage, and a feedback unit configured to provide the feedback voltage to the error amplification unit in response to the output voltage. A driving current of the buffer is independently adjusted with respect to the load current..
07/10/14
20140191681
Circuitry for current regulated, externally controlled led driving
A current driver circuit for regulating a light emitting diode (led) is disclosed. An example driver circuit uses one input node of the driver circuit for controlling both maximum brightness and dimming of an led coupled to an output node of the driver circuit.
07/03/14
20140187154
Multiple hardware interrupt functionality on near-field communication (nfc)
Hardware interrupt functionality associated with a disable pin may be used to place a near-field communication (nfc) device into various operational modes. For example, various intermediate voltage windows may be defined within an i/o voltage domain and a resistive divider running off an i/o rail may generate multiple reference voltages within the i/o voltage domain.
07/03/14
20140185401
Sensing circuit, memory device and data detecting method
A sensing circuit includes a sensing resistor, a reference resistor and a comparator. The comparator has a first input coupled to the sensing resistor, a second input coupled to the reference resistor, and an output.
07/03/14
20140185386
Reliability metrics management for soft decoding
Embodiments provide a method for reading a target memory sector of a memory. The method comprises, based on read data corresponding to a plurality of memory sectors of the memory, estimating first one or more reference voltages and, using the first one or more reference voltages, performing a first read operation on the target memory sector.
07/03/14
20140185374
Nonvolatile memory and method with improved i/o interface
Each i/o channel between a controller and one or more memory dice of a memory device has a driver on one end and a receiver at the other end. The receiver is optionally terminated with a pseudo open-drain (“pod”) termination instead of the conventional center-tapped (“ctt”) termination to save energy.
07/03/14
20140184657
Gamma voltage generation unit and display device using the same
A gamma voltage generation unit is discussed which includes: a voltage booster to boost a first maximum reference voltage into at least one second maximum reference voltage; a mode selector configured to select one of the maximum reference voltage and the at least one second maximum reference voltage as a selected maximum reference voltage; and a plurality of gamma voltage adjusters. The selected maximum reference voltage selected by the mode selector is provided as a 255th gray-scale gamma voltage.
07/03/14
20140184562
Capacitive touch apparatus and touch sensing method thereof
A capacitive touch apparatus is provided, and which includes a capacitive touch display panel, at least a touch sensing circuit and a judgment unit. The capacitive touch display panel has at least an inductive capacitor.
07/03/14
20140184481
Organic light emitting display, method for driving the same, and method for manufacturing the same
An organic light emitting display, a method for driving the same, and a method for manufacturing the same are discussed. The organic light emitting display according to an embodiment includes a panel including subpixels each having a compensation circuit including a reference voltage supply transistor, which receives a reference voltage and initializes a node of a gate electrode of a driving transistor using the reference voltage, a scan driver supplying a scan signal to scan lines of the panel, a data driver supplying a data signal to data lines of the panel, a timing controller controlling the scan driver and the data driver, and a reference voltage compensation unit which varies the reference voltage on each scan line and supplies the reference voltage to the subpixels..
07/03/14
20140184330
Time gain compensation
In certain embodiments, circuits and methods for time gain compensation are provided. A circuit includes a first op-amp that is configured to compare a first and a second input voltage signal received from first and second input circuits, respectively, and output a first op-amp output signal.
07/03/14
20140184311
Temperature detecting circuit, temperature compensating circuit, and buffer circuit
A temperature detecting circuit includes a first rectifying element with a cathode at a first reference voltage and an anode connected to a first node, a first impedance element connected in series with a second rectifying element between the first rectifying element and a second reference voltage, a third rectifying element with a cathode at the first reference voltage and an anode connected to a second node, a second impedance element and a fourth rectifying element connected in series between the third rectifying element and the second reference voltage, and a differential amplifier that outputs a differential signal pair corresponding to the difference in potential between the first node and the second node. The differential signals in the pair vary in magnitude in opposite directions in response to temperature changes..
07/03/14
20140184305
Pass gate circuit
A pass gate circuit includes a first transistor coupled between an input node (receiving an input signal) and an output node (outputting an output signal). A second transistor is configured to generate a voltage difference in response to a bias current flowing therethrough, wherein that voltage difference is applied between a first gate of the first transistor and the output node.
07/03/14
20140184239
Semiconductor device with fuse sensing circuit
A semiconductor device may include a fuse unit configured to include a fuse and generate an output voltage according to whether the fuse is ruptured, and a fuse sensing circuit configured to sense whether the fuse is ruptured in response to a reference voltage and the output voltages the reference voltage has a voltage level adapted to leakage current of the fuse unit.. .
07/03/14
20140184199
Method and system for calibrating a shunt resistor
A shunt resistor includes: two measuring terminals for applying a measuring current flowing through the shunt resistor along a main flow direction; slot structures dividing the shunt resistor along the main flow direction to include two side flow areas of respective first widths and a main flow area of a second width; and two calibration terminals connected to the side flow areas. A circuit connected to the measuring terminals is designed to detect, and generate a signal based on, a measuring current flowing through the shunt resistor.
07/03/14
20140184103
Feedback control circuit and power supply apparatus using dimming adjustment and forward voltage control
There are provided a feedback control circuit and power supply apparatus using dimming adjustment and forward voltage control. The feedback control circuit includes: a voltage detection unit detecting an output voltage from a transformer and providing a detection voltage; a dimming unit generating a varied dimming signal; and a feedback circuit unit comparing the detection voltage with a reference voltage varied according to the dimming signal and providing a feedback voltage for controlling a power transmission ratio of the transformer..
07/03/14
20140184078
Light emitting diode driving device
There is provided a light emitting diode driving device capable of preventing a number of switches from being turned on simultaneously when a plurality of light emitting diodes are respectively driven using a plurality of switches, the light emitting diode driving device, including: a light emitting diode unit having a plurality of light emitting diodes connected to one another in series and emitting light through receiving rectified power; and a driving unit having a plurality of drivers driving the plurality of light emitting diodes of the light emitting diode unit, respectively, wherein each of the plurality of drivers selects a maximum voltage from among a plurality of detection voltages with respect to current flowing in at least one light emitting diode corresponding thereto and compares the maximum voltage with a preset reference voltage to thereby drive the corresponding light emitting diode.. .
07/03/14
20140183333
Conversion circuitry for reducing pixel array readout time
An image sensor includes a pixel array having pixels arranged in rows and columns, a first successive-approximation-register (“sar”) analog-to-digital-converter (“adc”), a second sar adc, and first and second control circuitry. The first sar adc includes a first capacitor array (“fca”) that shares a first common terminal coupled to a first comparator and coupled to receive first analog pixel signals.
06/26/14
20140181429
Multi-dimensional hardware data training between memory controller and memory
A method of training a memory interface between a memory controller and a memory module. The method includes programming a delay line of a data strobe with a delay value and programming a reference voltage with a voltage value.
06/26/14
20140177739
Transmission device and node for the same
Nodes are connected in parallel between two transmission lines and configured to utilize a telecommunications standard of a differential transmission. At least one of the nodes includes two input/output terminals, a driver, a receiver, a resistor, and a comparator.
06/26/14
20140177368
Nonvolatile memory apparatus
A nonvolatile memory apparatus includes a memory cell configured to receive a first current and a second current through a bit line which is connected to a sensing node; a sensing node level control unit configured to be driven in response to a control signal, compare a reference voltage and a voltage of the sensing node, and output a driving signal to a driving node; a first current driving unit configured to output the first current to the driving node by using a first driving voltage in response to the driving signal; and a current control unit configured to perform a discharge operation of the bit line or electrically connect the driving node and the sensing node, in response to the control signal.. .
06/26/14
20140177354
Zero keeper circuit with full design-for-test coverage
A zero keeper circuit includes a dynamic input pfet connected to a source, an output, and a dynamic input. The circuit also includes a clock input nfet connected to the output, a pull-down node, and a clock input.
06/26/14
20140177332
Operating circuit controlling device, semiconductor memory device and method of operating the same
A semiconductor memory device is kept in a busy state by controlling a ready/busy pad when a detection signal is output since an external voltage is less than a reference voltage, prevents generation of an operating voltage by a pump circuit by preventing generation of a pump clock, and resets a microcontroller by preventing generation of micro clock. Accordingly, the semiconductor memory device may be prevented from malfunctioning through a series of operations when the external voltage is less than the reference voltage..
06/26/14
20140177295
Phase shift circuit and power factor correction circuit including the same
There are provided a phase shift circuit and a power factor correction circuit including the same. The phase shift circuit includes a switching circuit unit charging power in or discharging power from a capacitor through a plurality of switching devices and comparing a voltage of the capacitor with a predetermined reference voltage, and a clock generating unit generating a reference clock signal based on an output of the switching circuit unit, wherein the switching circuit unit turns the plurality of switching devices on or off, based on currents from inductors respectively included in a main circuit and a sub-circuit of a power factor correction circuit to determine a polarity of the voltage of the capacitor..
06/26/14
20140177289
Control circuit for reducing current error of output of power converter and control method thereof
A control circuit adjusts the output of a power converter by controlling a power switch, in which a primary side of a transformer, the power switch and a sensing resistor are connected in series to ground. The control circuit includes a peak current emulating unit, an error amplifier, a comparator, and a control signal generator.
06/26/14
20140177286
Quasi-resonant switching power supply
A quasi-resonance switching power supply quickly determines the number of bottom skips corresponding to the load condition even in abrupt load change. The quasi-resonance switching power supply is provided with a bottom skipping control function and a capacitor to hold a voltage corresponding to the load condition of the switching element over one switching period of the switching element.
06/26/14
20140177112
Inverter protection device
There is provide an inverter protection device including: a reference voltage obtaining unit obtaining a reference voltage signal based on output current from an inverter module; a filtering unit removing noise from the reference voltage signal to output the filtered signal; a sensing unit sensing the filtered signal through a sensing terminal; an electrostatic discharge diode provided between the sensing terminal and a ground; and a bypass unit provided between one terminal of the electrostatic discharge diode and the ground.. .
06/26/14
20140176978
Power supply apparatus and image forming apparatus including the same
A power supply apparatus controls an output voltage based on a difference between a predetermined reference voltage and a feedback voltage obtained from the output voltage. The power supply apparatus includes a feedback voltage adjustment circuit.
06/26/14
20140176855
Led backlight driving circuit and lcd device
A light emitting diode (led) backlight driving circuit includes a power supply module. A controllable switch and a voltage dividing resistor module are successively connected in series between an output end of the power supply module and a grounding end of the led backlight driving circuit.
06/26/14
20140176525
Organic light emitting display device and method for driving the same
An organic light emitting display device includes a display panel including a plurality of pixels having an organic light emitting diode and a pixel circuit; a gate driver to supply the plurality of pixels with a scan signal, a sensing signal, and a driving voltage; a data driver to supply data voltages and a reference voltage to the plurality of pixels in a driving mode, and sense voltages charged into the plurality of pixels in a sensing mode; a discharging driving unit to initialize voltages of a plurality of sensing power lines when the display device switches from the driving mode to the sensing mode; a timing controller to control the gate driver, the data driver, and the discharging driving unit to operate in and switch between the driving mode and the sensing mode; and a memory to store compensation data for the plurality of pixels.. .
06/26/14
20140176523
Organic light emitting diode display device and method for driving the same
Discussed is an oled display device. The oled display device includes a first transistor, a driving transistor, a first capacitor, a second transistor, an oled, and a third transistor.
06/26/14
20140176519
Programmable gamma circuit of liquid crystal display driving system
A programmable gamma circuit of liquid crystal display driving system, comprises: a first digital-to-analog converter to a n-th digital-to-analog converter, which receive a data used to generate a reference voltage of a pixel grayscale from a timing controller of the liquid crystal display driving system and convert the data to an analog signal; a first operational amplifier to a n-th operational amplifier, each operational amplifier being connected to a corresponding digital-to-analog converter, the amplified analog signal being the reference voltage of the pixel grayscale ; a first resistor to a fifth resistor, which are connected in series with each other, the operating voltage obtained by a voltage converter of the liquid crystal display driving system converting the reference voltage being input to one end of the first resistor, and one end of the fifth resistor being grounded. The voltage between the first resistor and the second resistor is input respectively to the power supply terminals of the first n/2 operational amplifiers, the voltage between the second resistor and the third resistor is input respectively to the ground terminals of the first n/2 operational amplifiers, the voltage between the third resistor and the fourth resistor is input respectively to the power supply terminals of the last n/2 operational amplifier, and the voltage between the fourth resistor and the fifth resistor is input respectively to the ground terminals of the last n/2 operational amplifier..
06/26/14
20140176404
Pixel circuit for organic light emitting display and driving method thereof, organic light emitting display
A pixel circuit for an organic light emitting display includes first, second, third, fourth, fifth, and sixth mos transistors, a first capacitor, and an organic light emitting diode. During a initialization stage, the sixth mos transistor is turned on, and a reference voltage is transmitted to the gate electrode of the second mos transistor.
06/26/14
20140176359
Reference charge cancellation for analog-to-digital converters
An analog-to-digital converter (adc) includes reference charge cancellation features to at least partially offset a voltage distortion on a bypass capacitor of a reference buffer due to a voltage reference hit taken by a switched capacitor bank with which the bypass capacitor is connected. The charge cancellation may be configured in logic to be input signal dependent because different resolved bits or transitions between resolved bits may cause different amounts of voltage reference hits.
06/26/14
20140176357
Arrangement for reading out an analog voltage signal
An arrangement for reading out an analog voltage signal includes a voltage signal input for applying the analog voltage signal thereto, a reference unit configured to generate an analog reference voltage, and a converting unit configured to convert an analog input signal into a digital output signal. To enable online self-calibration of the arrangement, the arrangement includes a superposition unit configured to receive the analog voltage signal and the analog reference voltage.
06/26/14
20140176250
Relaxation oscillator
In an embodiment, a method includes: during a first portion of a cycle of a clock signal generated by an oscillator, pre-charging a first capacitor of a first switched capacitor stage until a first comparator determines that a first node voltage of the first switched capacitor stage is greater than a first reference voltage at a first reference voltage node; applying a second reference voltage to the first reference voltage node; and responsive to a first edge of the clock signal, charging the first capacitor until the first comparator determines that the first node voltage is greater than the second reference voltage at the first reference voltage node.. .
06/26/14
20140176249
Apparatuses and methods for providing oscillation signals
Apparatuses and methods are disclosed for oscillators that are substantially insensitive to supply voltage variations. In one such example apparatus, a capacitance circuit is configured to be charged and discharged.
06/26/14
20140176239
Adaptive control mechanisms to control input and output common-mode voltages of differential amplifier circuits
An amplifier circuit includes differential input nodes, a differential amplifier stage having differential input terminals and differential output terminals, and an input common-mode voltage adaptation circuit connected between the differential input nodes of the amplifier circuit and the differential input terminals of the differential amplifier stage. During an input common-mode adaptation phase, the input common-mode voltage adaptation circuit forces the differential input terminals of the differential amplifier stage to a common-mode voltage equal to an adaptive reference voltage, independent of a common-mode voltage applied to the differential input nodes of the amplifier circuit during the input common-mode adaptation phase.
06/26/14
20140176236
Pilot signal generation circuit
In some embodiments, a pilot signal generation circuit is provided including a buffer and a differential amplifier responsive to an output of the buffer. A first transistor is connected to control a reference voltage at an input of the buffer in response to a pulse width modulated logic signal and a second transistor connected to control a reference voltage at an input of the differential amplifier based on the pulse width modulated logic signal such that the second transistor is connected so as to turn on when the first transistor is turned off and to turn off when the first transistor is turned on.
06/26/14
20140176233
Bandwidth calibration for filters
A low power, high accuracy calibration circuit for filter calibration is provided. The calibration circuit includes a chargeable voltage storage element.
06/26/14
20140176200
Methods and apparatus for tuning a current source and selecting a reference voltage to maintain a transconductance and transition frequencies of transistors of an inverter
A circuit including a current source, an inverter, and a device. The current source is configured to receive a first reference voltage and supply an output current.
06/26/14
20140176153
Monitoring circuit and system for esd protection device
A monitoring circuit and a monitoring system for electrostatic discharge (esd) protective device are disclosed herein. The monitoring circuit includes an oscillating unit, a signal processing unit and a comparator.
06/26/14
20140176113
Circuit for outputting reference voltage
A circuit for outputting reference voltage includes: a detecting unit, a feedback unit and an output unit which are respectively connected with an external power source, wherein a plurality of field effect transistors (fets) are provided in the detecting unit, wherein the detecting unit is for detecting foundry corners of the fets therein, the feedback unit is for feeding back and comparing a detecting result of the detecting unit, and outputting information after feeding back and comparing, and the output unit is for outputting reference voltage corresponding to the foundry corners of the fets to an external output terminal. The reference voltage outputted by the circuit for outputting reference voltage of the present invention is capable of varying with foundry corners of the fets, and achieves compensating for foundry corners of the fets..
06/26/14
20140176112
Low voltage bandgap reference circuit
A low voltage bandgap reference circuit includes a positive temperature coefficient circuit unit, a negative temperature coefficient circuit unit and a load unit, wherein the positive temperature coefficient circuit unit comprises a first differential operational amplifier, a first, second and third transistor, a first resistor, a first and second diode, and the negative temperature coefficient circuit unit includes a second differential operational amplifier, a fourth, fifth and sixth transistor, a second resistor and a third diode. The low voltage bandgap reference circuit provides a current having a positive temperature coefficient characteristics and a current having a negative temperature coefficient characteristics to flow through the load unit, whereby generate a stable reference voltage thereon, which the stable reference voltage is less affected by the temperature.
06/26/14
20140176108
Maximum power extraction device
Provided is a maximum power extraction devices including: a battery; a voltage control unit adjusting a size of a first power outputted from the battery according to a resistor selected from a plurality of resistors, and generating a compare signal according to a size difference between an operating voltage adjusting the size of the first power depending on the selected resistor and a reference voltage; a switching unit connected between the battery and a load and adjusting a size of the operating voltage according to a size difference of the compare signal in response to first and second switching control signals; a switching control unit generating the first and second switching control signals to allow a size between the operating voltage according to the compare signal and the reference voltage to be within an error range; and a maximum power control unit measuring the number of first operations obtained by counting the occurrence number of the first or second switching control signals for a predetermined time, when the compare signal is within the error range.. .
06/26/14
20140176107
Fast response control circuit and control method thereof
In one embodiment, a control circuit configured to control a switch mode power supply, can include: (i) a compensation signal generating circuit configured to generate a compensation signal according to an error between an output voltage feedback signal and a first reference voltage of the switch mode power supply; (ii) a switching signal generating circuit configured to control a switching operation of a power switching device of the switch mode power supply according to the compensation signal; (iii) a judge circuit configured to determine an operation state of the switch mode power supply according to the output voltage feedback signal; and (iv) a loop gain regulating circuit configured to regulate a loop gain of the control circuit according to the operation state.. .
06/26/14
20140176099
Voltage supply device
There is provided a voltage supply device, including an inputting unit obtaining a reference voltage; an operational amplifier obtaining switching information based on the reference voltage and a feedback voltage, a switching unit outputting an input voltage as the feedback voltage based on the switching information from the operational amplifier, a controlling unit obtaining a control signal based on the reference voltage, and an outputting unit outputting an output voltage and hysteresis information based on the control signal.. .
06/26/14
20140176098
Feed-forward compensation for low-dropout voltage regulator
A voltage regulator includes a pass element having a control input coupled to a control node and operable to generate an output voltage at an output node, a negative feedback amplifier operable to receive a reference voltage and the output voltage and generate a signal at the control node based on a difference between the reference voltage and the output voltage, and a noise cancellation circuit coupled to the control node and the output node and operable to generate a bias current at the control node based on the output voltage.. .
06/26/14
20140176053
Battery charger, voltage monitoring device and self-diagnosis method of reference voltage circuit
A battery charger includes a battery cell, a reference voltage generating section, an a/d converting section including an a/d converter and a control section. The reference voltage generating section includes a first reference voltage circuit generating a first reference voltage and a second reference voltage circuit generating a second reference voltage equal to the first reference voltage.
06/26/14
20140176014
Led backlight driver circuit
A light emitting diode (led) backlight driver circuit includes an led lightbar and a driver module of the led lightbar. The driver module includes a backlight driver integrated chip (ic) regulating an output voltage of the driver module, and the backlight driver ic includes a first comparator correcting the output voltage of the driver module.
06/26/14
20140176003
Discharge switch device for ignition excitation system
A discharge switch device is provided that includes a comparator portion, a temperature compensation diode, and a trigger portion. The comparator portion is configured to compare an input voltage value to a reference voltage value.


Popular terms: [SEARCH]

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

Follow us on Twitter
twitter icon@FreshPatents

###

This listing is a sample listing of patent applications related to Reference Voltage for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Reference Voltage with additional patents listed. Browse our RSS directory or Search for other possible listings.
     SHARE
  
         


FreshNews promo



0.5877

4449

74 - 0 - 84