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7821439 Programmable CAN bus to analogue signal converter  
A module (10) connects to a CAN bus in a motor vehicle and converts a CAN message into an analog signal that can be monitored by test equipment. The module also has wireless communication with a...
RE41831 Class B driver  
A communication circuit, Ethernet controller card, and method comprises K digital-to-analog converters each receiving a corresponding digital control signal and each providing a corresponding...
7817074 D/A converter  
A D/A converter (100) includes a delta-sigma modulation circuit (102) including a quantizer (105) that receives a digital signal to quantize it based on a quantization reference value, a local D/A...
7818638 Systems and devices including memory with built-in self test and methods of making and using the same  
Disclosed are methods, systems and devices, such as a device including a data location, a quantizing circuit coupled to the data location, and a test module coupled to the quantizing circuit. In...
7812753 Tri-level dynamic element matcher allowing reduced reference loading and DAC element reduction  
Systems and methods using the same to achieve a tri-level multi-bit delta-sigma DAC having reduced power consumption and voltage droop have been achieved. A new rotation-based first order...
7812752 Digital-to-analog converter circuit, data driver and display device  
A digital-to-analog converter circuit includes: a first subdecoder for receiving a first reference voltage group and selecting a reference voltage Vrk based upon an input digital signal; a second...
7812754 Digital to analog converter and method thereof  
A digital to analog converter (DAC) has a plurality of transistor-resistor units connected in a string. Each of the transistor-resistor units of the DAC has a pair of transistors that are turned...
7812751 Method and device for digital-to-analog conversion with filtering  
The invention relates to a device and a method for converting a digital signal having a plurality of data-bits into a filtered analog signal. A device according to the invention includes a delay...
7808416 Output circuit, digital analog circuit and display device  
A selection circuit receives a plural number (m) of respective different values of voltages as reference voltages to select and output two voltages. An amplifier receives at two input terminals...
7808409 Multi-bit data converter using data weight averaging  
A method for converting data includes matching dynamic elements by repeatedly selecting a portion of unit elements among N unit elements according to data and a circulation direction. An existence...
7804433 Methods and apparatus for error cancelation in calibrated current sources  
Methods and apparatus for error cancelation in calibrated current sources are disclosed. In an example, a digital to analog converter to convert digital bits into an analog output signal is...
7801559 Methods and apparatus for baseband digital spectrum translation (BDST)  
A method for transmitting and receiving digitally modulated wireless signals using an analog FM transceiver is provided. The analog FM transceiver has a transmit speech audio frequency band, a...
7800789 Analog front-end circuit and electronic device  
An analog front-end circuit controlling an imaging device and processing an analog image signal output from the imaging device includes: an analog processing section that receives an analog image...
7796073 Current switch circuit and D/A converter, semiconductor integrated circuit, and communication device using the same  
In a current switch circuit A used for a current steering D/A converter, a current switch basic circuit 1 includes first and second transistors Tr121 and Tr122 included in a differential switch...
7796067 Curvature correction methodology  
A method is provided to produce an error corrected digital output from a temperature measurement system that generates digital outputs representative of the output of one or more temperature...
7796074 Digital/analogue converter, converter arrangement and display  
In one embodiment of the present invention, a switched capacitor digital/analog converter is provided, for example providing gamma correction in liquid crystal displays. The converter includes a...
7796066 System and method for common mode translation  
System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential...
7791518 Flicker noise reduction in continuous time (CT) sigma delta modulators (SDMS)  
Embodiments of a system for processing a signal may include a receiver configured to receive an input analog signal and an up converter coupled with the receiver and configured to up convert the...
7791516 Temperature compensated delta-sigma modulators with logarithmic dynamic range  
A delta sigma (ΔΣ or DS) modulator includes at least a first proportional to absolute temperature (PTAT) element that conditions an input signal, and a second PTAT element that conditions a...
7791517 Fully differential delta sigma modulator  
A fully differential delta sigma modulator is provided. The fully differential delta sigma modulator has an integrator in which a comparator replaces an operational amplifier for decreasing power...
7791519 Semiconductor device, semiconductor device testing apparatus, and semiconductor device testing method  
In a pass/fail judgment test for a semiconductor IC having plural DACs, there is a problem that the test time is undesirably increased due to an increase on the number of DACs or an increase in...
7786915 Adaptive digital audio pre-distortion in an audio digital to analog converter  
An adaptive digital pre-distortion block is used to cancel device nonlinearities to improve the overall linearity of a Delta-Sigma DAC system. In particular, the pre-distortion block may be...
7786916 Digital to analog converter circuits and methods of operation thereof  
A multi-bit digital to analog converter is implemented by a switched-capacitor arrangement in which a reservoir capacitor (Cf) accumulates charge representing the desired analog output signal...
7782239 Multi-stage resettable sigma-delta converters  
A resettable multi-stage sigma-delta analog-to-digital (A/D) converter enables a sampled analog signal to be resolve with fewer cycles than a resettable single sigma-delta A/D converter. The...
7782236 Current cell circuit in digital-analog converter  
Embodiments relate to a current cell circuit in a digital-analog converter. According to embodiments, a current cell circuit in a digital-analog converter may include a current source connected to...
7777658 System and method for area-efficient three-level dynamic element matching  
A system for converting digital signals into analog signals using sigma-delta modulation and includes a signed thermometer encoder for converting a plurality of signed binary data received at the...
7777655 Wideband switched current source  
Traditionally, constant current source circuits (and, in particular, constant current source circuits that include cascoded current sources) had numerous drawbacks due to parasitic capacitances,...
RE41519 Method and 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...
7773009 High resolution digital analog conversion circuit  
To increase the accuracy and resolution of an m bit digital analog converter, n bit input values with n>m are fed to a control circuit and converted to a series of control values for the digital...
7773019 Digital-to-analog converter  
A PRA-DAC is disclosed. The PRA-DAC is operable to increase its conversion speed.
7773017 Transmitter digital-to-analog converter with noise shaping  
A noise shaping module includes a first addition module that receives an N-bit digital input signal, where N is an integer greater than one. A first filter module generates a first filtered output...
7773013 Voltage interpolation in digital-to-analog signal conversion  
A multiple-input follower amplifier is coupled through a configuration of switching devices to an upper reference voltage at a number of its inputs and to a lower reference voltage at the...
7768434 Systems and methods for digital upconversion for television signals  
Systems and methods for digital upconversion of baseband television signals that can be used in cable television headend systems are provided. In one embodiment, the system includes a digital...
7768435 Method and apparatus for digital to analog conversion  
The apparatus described is a multi-core processor 505 adapted to provide digital to analog conversion. At least one 2010 of the cores 510 is used to make the conversion, another group of cores...
7764211 Current steering DAC  
In a multi-channel current steering DA converter, e.g., a two-channel current steering DA converter, reference current sources Irefa and Irefb that can serve as current mirror sources for current...
7764200 Capacitive button device  
The present invention discloses a capacitive button device, comprising: a signal input unit, a first amplifier, a first switching unit, a second amplifier, a second switching unit, an...
7764210 System and method for converting an input signal  
A video driver includes a current-to-voltage converter circuit that converts an analog input current to a corresponding analog voltage. Active termination circuitry is configured to synthesize an...
7764212 Driving apparatus for display  
A driving apparatus for a display is provided. The driving apparatus for a display comprises a reference voltage generator, a digital-to-analog converter, and an output unit. The reference voltage...
7760119 Waveform generator and test apparatus  
The purpose is to provide a waveform generator that generates signals with a frequency lower than the minimum sampling frequency of the DAC. In the waveform generator 10, the clock generator 106...
7760121 Dual data weighted average dynamic element matching in analog-to-digital converters  
Methods and systems to provide dynamic element matching (DEM) in multi-phase sample systems include multiple uncorrelated, dual data weighted averaging, dynamic element matching (DDWA DEM). DDWA...
7755524 Method for performing a digital to analog conversion of a digital signal, and corresponding electronic device  
A method for processing a digital signal includes an elementary processing including a radiofrequency transposition with a radiofrequency transposition signal and a digital to analog conversion of...
7755526 System and method to modify a metadata parameter  
A method includes receiving first encoded digital audio data including a metadata parameter having a first value. The first encoded digital audio data has a first dynamic range. The method...
7757147 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...
7755527 Read and write interface communications protocol for digital-to-analog signal converter with non-volatile memory  
A mixed signal integrated circuit device, e.g., digital-to-analog converter (DAC), has a serial interface communication protocol that accesses volatile and/or non-volatile memory and allows a...
7750833 D/A conversion circuit and semiconductor device  
A D/A conversion circuit in accordance with the present invention, which is provided with a switch swD, allows a writing operation of a voltage (a true gradation voltage) to be performed at a...
7746258 Digital-analog converter and camera module having the same  
Disclosed are a digital-analog converter and a camera module having the same. The digital-analog converter includes a plurality of decoders for receiving bits of a digital input signal by dividing...
7746260 Multiplying digital-to-analog converter for high speed and low supply voltage  
A multiplying digital-to-analog converter includes an operational amplifier (OP-amp) operated under a first power supply voltage and a second power supply voltage; an OP-amp input switch block...
7746261 Variable gain amplifier and D/A converter  
A variable gain amplifier for amplifying an input voltage at a gain defined by a binary code includes: a signal input terminal; a signal output terminal; a charge division means that accumulates a...
7746259 Switching circuitry  
A digital-to-analog converter, comprising: a first field-effect transistor; a second field-effect transistor; and adjusting means for adjusting a bulk voltage applied to at least one of the first...
7741985 Digital to analogue converter  
A digital/analogue converter for converting an input n-bit digital code, where n is an integer greater than one, has an n-bit digital input and an output for connection to a load, and includes: an...