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7890832 Method for accuracy improvement allowing chip-by-chip measurement correction  
A method for allowing measurement corrections on a chip-by-chip basis. Error correction values are generated responsive to the input value to a circuit of the calibrated integrated circuit chip...
7889106 Current mirror circuit and digital-to-analog conversion circuit  
A first switched capacitor circuit is connected to the source of one MOS transistor of a current mirror pair configured by a pair of MOS transistors and a second switched capacitor circuit is...
7889104 Digital to analog converter  
A digital to analog converter (DAC) converting a digital code to an output voltage and capable of self calibration. The DAC includes a self-calibration signal generator generating a...
7889109 ΔΣ modulation digital-analog converter, digital signal processing method, and AV device  
A ΔΣ modulation digital-analogue converter of the present invention includes: a look-up table in which a correspondence relationship between each of a plurality of possible input values of an...
7889108 Hybrid delta-sigma ADC  
A hybrid delta sigma ADC architecture and method is disclosed to implement a high-resolution delta-sigma modulator with a single-bit output. The system contains a low-order multi-bit analog...
7889107 Digital-to-analog converter  
A digital-to-analog converter (DAC) includes multiple electro-optical converters to generate multiple first optical signals in response to multiple input signals, multiple optical attenuators to...
7889812 Direct digital frequency synthesizer with phase error correction, method therefor, and receiver using same  
A receiver (1000) includes a direct digital frequency synthesizer (DDFS) (700) and first (1040) and second (1042) mixers. The DDFS (700) has a first output for providing a first local oscillator...
7884747 Digital to analog converters having circuit architectures to overcome switch losses  
A digital to analog converter (DAC) includes a pair of operational amplifiers each having a first input coupled to a respective high or low reference voltage. The DAC includes a plurality of...
7884783 Data driver, organic light emitting display, and method of driving the same  
A data driver including a first digital-to-analog converter configured to select first and second reference voltages depending on upper bits of data and supply the first and the second reference...
7884741 For externally clocked digital audio input, determining a valid clock and muting audio during synchronization  
Methods and apparatus for determining the existence of an external clock over a digital input port on a computer. In one embodiment, the external clock is validated, and a lock is performed when...
RE42117 Apparatus for operating a CMOS imager having a pipelined analog to digital converter  
An image sensor system using offset analog to digital converters. The analog to digital converters require a plurality of clock cycles to carry out the actual conversion. These conversions are...
7884746 Noise limitation of a signal dependent multibit digital to analog signal conversion  
Several methods and a system of noise limitation of a signal dependent multibit digital to analog signal conversion are disclosed. An exemplary embodiment provides a method that includes receiving...
7884744 Circuit arrangement, L[ocal] I[nterconnected] NE[twork] comprising such circuit arrangement as well as method for processing input signals of the LIN  
Circuit arrangement, LIN comprising such circuit arrangement as well as method for processing input signals of the LIN In order to further develop a circuit arrangement (100)—for processing at...
7880650 Method and apparatus for testing data converter  
A data converter for converting analog signals to digital signals, or for converting digital signals to analog signals is provided. In one embodiment, a production self-test is provided. In one...
7880531 System, apparatus, and method for selectable voltage regulation  
Apparatuses, systems, and methods are disclosed for generating, regulating, and modifying various voltage levels on a semiconductor device using a current mirroring digital-to-analog voltage...
7880653 Switched-capacitor circuits, integration systems, and methods of operation thereof  
Embodiments include integrator systems, switched-capacitor circuits, and methods of their operation. An integrator system comprises a differential amplifier and first and second sampling modules....
7876254 Data conversion circuitry having successive approximation circuitry and method therefor  
A data converter for converting analog signals to digital signals, or for converting digital signals to analog signals is provided. In one embodiment, a production self-test is provided. In one...
7868809 Digital to analog converter having fastpaths  
A resistor-based digital to analog converter (DAC) having mux fastpaths, which selectively connect a subset (or an entirety) of voltage divider nodes in a DAC to either a higher level of...
7868804 High speed driver equalization  
The present invention relates to emphasizing and de-emphasizing of an analog data signal. Using a main analog driver a data signal indicative of bit values of binary data is converted into a first...
7868807 Data weighted average circuit and dynamic element matching method  
A data weighted average circuit is disclosed which includes a lookup unit and a storage unit. The invention uses a lookup table to speed up the circuit operation. Besides, the operation delay is...
7868794 Methods and apparatus to test and compensate multi-channel digital-to-analog converters  
Methods and apparatus to test and compensate multi-channel digital-to-analog converters (DACs) are described. In some examples, a multi-channel digital-to-analog converter (DAC) and an error...
7868808 Phase-locked loop circuitry using charge pumps with current mirror circuitry  
A system and method for performing phase-locked loop is disclosed. The system includes phase frequency detector circuitry, charge pump circuitry having first current mirror circuitry and second...
7868855 Driving circuit and organic light emitting diode display device thereof  
A driving circuit is capable of displaying various gray level values. The driving circuit generates a data voltage, includes a first decoder adapted to output first decoding signals using upper...
7869388 Class-B transmitter and replica transmitter for gigabit ethernet applications  
A method and apparatus for a Gigabit Ethernet transceiver that has a Class-B amplifier in a main transmitter for higher efficiency and power handling capabilities. The output current of the main...
7868805 Digital-Analog (D/A) converter and data driver and flat panel display using the D/A converter and data driver  
A Digital-Analog (D/A) converter, a data driver and a flat panel display using the D/A converter and data driver includes a controller to generate a first control signal or a second control signal...
7868806 Apparatus and method for dynamic circuit element selection in an digital-to-analog converter  
According to at least one embodiment of the invention, an apparatus may include first, second and third circuits. The first circuit receives input data and provides a plurality of first signals...
7868800 Mixed-signal control apparatus of modulation system  
A mixed-signal control apparatus of a modulation system is provided. The mixed-signal control apparatus includes a digital-to-analog converter (DAC) unit, an analog-to-digital converter (ADC)...
7864074 Data driver used in a current-driving display device  
A data driver used in a current-driving display device for receiving a digital signal and for outputting a gray-scaled current signal to a data line. The data driver includes a digital-to-analog...
7864088 Integrated DSP for a DC offset cancellation loop  
Processes and apparatuses for direct current (DC) offset cancellation using digital signal processing. Some embodiments of the invention are summarized in this section. In one embodiment, a...
7864092 Thermo-decoder circuit  
A digital-to-thermometer-code converter is disclosed for converting a digital signal into its thermometer-code equivalent. Embodiments of the digital-to-thermometer-code include a...
7859445 Digital to analog converter  
An embodiment of a digital to analog converter (DAC) with two outputs is provided. The DAC is controlled by an n-bits input signal and comprises a reference voltage circuit generating (2n+1)...
7859444 D-A converter and D-A converting method  
Provided is a DA converter that converts an input digital signal into an analog signal, comprising an integrator that outputs an integration value of the digital signal for each cycle of a...
7859439 Processing apparatus for calibrating analog filter according to frequency-related characteristic of analog filter, processing apparatus for generating compensation parameter used to calibrate analog filter, related communication device, and methods thereof  
A processing apparatus for calibrating an analog filter of a communication device in a digital domain is disclosed, wherein the analog filter is arranged to perform a filtering operation upon a...
7855669 Circuit device to generate a high precision control signal  
In an embodiment, a circuit device includes a first counter responsive to a clock signal and to a first control word having a first precision. The counter produces a first control signal related...
7855720 Digital-to-analog converter and image display device  
Disclosed herein is a digital-to-analog converter. The digital-to-analog converter includes: a higher resistor string; a lower resistor string; an operational amplifier; a higher selector; a lower...
7852245 Method and apparatus for calibrating a replica digital-to-analog converter  
A method and system calibrates a replica analog-to-digital converter. The system includes a first digital-to-analog converter to convert a digital signal into a corresponding first analog signal....
7852250 Digital to analog converter  
This invention discloses a digital to analog converter (DAC) for converting a digital signal with a predetermined number of bits to a corresponding analog signal, the DAC comprises a first current...
7847717 Low noise current steering DAC  
A low noise current steering digital-to-analog converter (DAC). The DAC includes a current reference for generating a bias current that biases a set of current elements. The set of current...
7847715 Segmented optics circuit drive for closed loop fiber optic sensors  
Systems and methods for improving output resolution of an optical drive circuit in an optical sensor. The optical sensor circuit includes an optics circuit that generates analog measurement data,...
7847718 Digital-to-analog converter, data driver and display device using same  
A digital-to-analog converter including includes a decoder which receives m (where m>=4 holds) reference voltages having voltage values that differ from one another, and selects and outputs n...
7844137 Multisampling with reduced bit samples  
A relatively non-complex signal processor supporting an active pixel sensor imaging system is disclosed. The signal processor only requires the first sample from a group of samples in a multiple...
7839315 Converter and method for converting an analog signal and comparator for use in such conversion  
A converter may include an input terminal to receive a first analog signal, a digital-to-analog converter to provide second analog signals related to digital values applied to the...
7834791 Current steering DAC and voltage booster of same  
A digital-to-analog converter is coupled to a first voltage source and used for converting a digital input into an analog output. The DAC includes a voltage booster providing a first gate-source...
7834790 Communication device including a power reduction mechanism  
A communication device includes a communication port that includes a digital to analog converter (DAC) that may be configured to output for transmission an analog signal that corresponds to a...
7830290 Switched capacitor digital-to-analog converter  
A switched capacitor digital-to-analog converter (SC-DAC) is provided. The SC-DAC of the present invention can eliminate an influence of a reference voltage source caused by a signal dependent...
7825843 D/A converter and semiconductor integrated circuit including the same  
In a current steering D/A converter, a 1LSB current source 1 and a 2LSB current source 2 are binary code current sources for outputting currents with current values weighted by ½, and a 4LSB...
7825844 Adaptive high-order digital-to-analog conversion  
Techniques for performing digital-to-analog conversion with first-order or higher-order hold using a simple analog circuit for signal reconstruction and employing feedback control techniques are...
7821429 Parallel to serial conversion circuit  
A parallel to serial conversion circuit includes a plurality of switching units and a voltage output unit providing an operating voltage for the switching units. Each of the plurality of switching...
7822147 Self-calibrating multi-port circuit and method  
The invention provides a type-based method to compensate for distortions in circuits operating on a plurality of input modulated signals to form one or more output modulated signals. Steps of the...
7821438 Digital-to-analog converter circuit layout  
A digital-to-analog converter circuit layout includes a ratiometric digital-to-analog converter. The ratiometric digital-to-analog converter includes a digital data input, a converter voltage...