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8350736 Offset compensation scheme using a DAC  
An offset compensation scheme using a digital-to-analog converter (DAC) is disclosed. In some embodiments, a DAC is coupled to a circuit having an undesired current or voltage offset and is...
8350741 Device and method for driving digital-to-analog converter  
A device for driving a switch in a digital-to-analog converter (DAC) includes first and second latches, and a logic gate. The first latch is configured to store a digital input data signal...
8344922 Digital-to-analog converter with code independent output capacitance  
A Digital-to-Analog Converter (DAC) with code independent output capacitance includes circuitry configured to convert a digital input signal to an analog output signal in a manner such that at...
8344923 Power digital-analog-converter with switched capacitor voltage division  
A digital signal power amplification apparatus with multiple digital amplification cells connected in series, each amplification cell processing a separate bit of the digital signal. The apparatus...
8344921 Sigma-delta modulator with SAR ADC and truncater having order lower than order of integrator and related sigma-delta modulation method  
A sigma-delta modulator includes a processing circuit, a quantizer, a truncater and a feedback circuit. The processing circuit receives an input signal and an analog information and generates an...
8344978 Digital-to-analog converter for display device  
A digital-to-analog converter (DAC) for a display device is provided. The DAC includes an amplifier and a current decoder. The amplifier receives a gradation voltage with respect to upper bits in...
8339299 2-phase gain calibration and scaling scheme for switched capacitor sigma-delta modulator using a chopper voltage reference  
A sigma-delta modulator has a chopper voltage reference providing a reference signal having a clock dependent offset voltage, a single-bit or a multi-bit digital-to-analog converter (DAC); a...
8339300 Digital-to-analog converter, analog-to-digital converter, and semiconductor device  
A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant...
8339298 Synchronous demultiplexer circuit and method  
A digital counting circuit with multiple outputs is used to clock interlaced 16-bit data words into separate digital-to-analog converters in the correct sequence for each of eight hydrophone...
8339301 Gamma voltage generator and DAC having gamma voltage generator  
A gamma voltage generator includes an RGB common gamma voltage generation section configured to generate RGB common gamma voltages using corresponding gamma reference voltages among a plurality of...
8334721 Integrated upstream amplifier for cable modem and cable set-top boxes  
An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate....
8330633 Current steering circuit with feedback  
A differential current steering (CS) circuit uses feedback from the differential output nodes A and B to cause current steering devices (e.g., MOSFETs) to effectively exhibit an infinite output...
8330634 Precision sub-radix2 DAC with linearity calibration  
A system includes an N bit sub-binary radix digital-to-analog converter (DAC) that converts an m bit digital input signal to an analog output signal, where m and N are integers greater than or...
8325075 Digital-to-analog converter of data driver and converting method thereof  
A digital-to-analog converter of a data driver and a converting method thereof, in which information corresponding to a lower bit is converted into an analog signal through control of current...
8325072 Calibration circuit and method for calibrating capacitive compensation in digital-to-analog converters  
A digital-to-analog converter converts a digital input signal into an analog output signal. The digital-to-analog converter includes an input selector configured to input the digital input signal...
8305247 Low voltage digital to analog converter, comparator and sigma-delta modulator circuits  
Circuits that operate with power supplies of less than 1 Volt are presented. More particularly, circuits that operate with supply voltages near or lower than the threshold voltage of the...
8306096 Interference reduction using variable digital-to-analog converter (DAC) sampling rates  
A method for interference reduction is described. A sampling frequency is selected for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or...
8300734 Frequency converting system  
In a frequency converting system, an input signal x(t) is supplied to a signal branching section for dividing a predetermined frequency domain into M bands, extracting signal components of the...
8299947 Sampling/quantization converters  
Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one...
8299946 Noise shaping for digital pulse-width modulators  
A noise shaper that compares an input signal to a feedback output signal, which is a truncated version of the input signal, and generates the difference between the two signals (i.e., the error)....
8294524 Transversal agile local oscillator synthesizer  
A representative integrated circuit comprises a clock signal generator that generates a clock signal, a code pattern generator that generates digital pattern data based on the clock signal, and a...
8294605 Conversion of a discrete time quantized signal into a continuous time, continuously variable signal  
Provided are, among other things, systems, apparatuses, methods and techniques for converting a discrete-time quantized signal into a continuous-time, continuously variable signal. An exemplary...
8284087 System and method for detecting accessory connection and accessory class  
A method comprises disabling a video digital-to-analog converter (DAC) that is configured to provide an output current representative of a video signal to an output node of an accessory connector...
8284083 Digital analog converter circuit and method for fault detection  
A digital-analog converter circuit having a first subcircuit for converting a digital signal to an analog voltage, a second subcircuit for determining a first area in which the digital signal...
8284088 Digital to-analog converter  
A complementary pulse width modulation circuit is composed of a signal generating circuit 10 for generating first and second pulse width modulation signals (PWM#1 and PWM#2) that are complementary...
8274416 DA converter, solid-state imaging device, and camera system  
A digital-to-analog (DA) converter includes: an analog output section that generates an output current corresponding to a value of a digital signal in response to a bias voltage and outputs an...
8269659 System and method for compact cyclic digital to analog converter  
A system for implementing a cyclic digital to analog converter (c-DAC) is capable of supporting a large size liquid crystal display. The system includes an upper DAC stage configured to output a...
8271113 Audio testing system and method  
An audio testing system is configured for receiving an audio signal from the an audio emitting device. The system samples the audio signal and obtains sampling points from the audio signal for...
8264387 Transceiver having multiple signal processing modes of operation  
A transceiver includes a processor and an analog-to-digital converter. The processor is adapted to in a transmit mode of the transceiver, generate a modulated signal in response to a first digital...
8264436 Gray scale voltage decoder and digital-to-analog converter including the same  
A gray scale voltage decoder includes a first decoding unit and a second decoding unit, in which the first decoding unit includes row blocks. Each of the row blocks receives one of a number of...
8264390 Conversion of a discrete time quantized signal into a continuous time, continuously variable signal  
Provided are, among other things, systems, apparatuses, methods and techniques for converting a discrete-time quantized signal into a continuous-time, continuously variable signal. An exemplary...
8259549 Deflection reference adjustment for variable track pitch media  
Apparatus and method for generating an analog waveform, such as a deflection signal used to deflect a write beam during the writing of data to a rotatable medium having a variable track pitch...
8253613 Second-order delta-sigma analog-to-digital converter  
In one embodiment, a second-order delta-sigma analog-to-digital converter (ADC) includes a second-order integrator adapted to second-order integrate a value at a first node, where the first node...
8253611 Method for calibrating a pipelined continuous-time sigma delta modulator  
Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a...
8253809 Analog-digital converter, analog-digital conversion method, image pickup device, method of driving the same, and camera  
An analog-digital converter includes: comparators disposed to correspond to analog signals which are converted into digital signals and configured to compare a voltage value of the analog signal,...
8248286 Split wiper digital potentiometer and method  
A potentiometer and a method for adjusting an impedance. In accordance with an embodiment, the potentiometer may be a programmable multistage digital potentiometer that has a first stage...
8248283 Multi-channel SAR ADC  
For high voltage applications, multi-channel successive approximation register (SAR) analog-to-digital converters (ADCs) are often plagued with numerous problems that are generally associated with...
8248281 High speed, high resolution, high precision voltage source/AWG system for ATE  
A method for compensating a linearity error of a dual digital-to-analog converter, including the steps of receiving a digital data signal which include a plurality of bits, the digital data signal...
8248287 Method and apparatus for reducing input differential pairs for digital-to-analog converter voltage interpolation amplifier  
For voltage interpolation amplifiers used in digital-to-analog converter architecture, the number of input differential pairs required by the voltage interpolation amplifier may be reduced such...
8242942 System and method to modify a metadata parameter  
A method includes receiving digital audio data at an audio adjustment system. The method includes converting a portion of the digital audio data to an analog audio signal with a digital-to-analog...
8242943 Digital-to-analog converter  
The present invention relates to a digital-to-analog converter comprising a differentiation circuit, a conversion circuit, and an integration circuit. The differentiation circuit receives and...
8243916 CODEC circuit for POTS system  
A CODEC circuit for POTS system comprises a digital circuit for outputting a digital control signal having a first bit width, the digital control signal being indicative of a voltage to be applied...
8242944 Digital-to-analog converter circuit including adder drive circuit and display  
A digital-to-analog conversion circuit includes a gradation voltage generation circuit, a most-significant-bits decoder circuit, a least-significant-bits decoder circuit and a calculation circuit....
8242945 Successive approximation type AD converter and test method thereof  
A successive approximation type analog-to-digital (AD) converter includes: a converting and comparing section configured to compare an input analog signal and an analog signal as an analog...
8243057 Display and driving method thereof  
An organic electroluminescent display and driving method thereof. The organic electroluminescent display includes a demultiplexer for outputting signals provided by a data driver to a plurality of...
8237691 Display driver circuit and DAC of a display device with partially overlapping positive and negative voltage ranges and reduced transistor breakdown voltage  
A display driver circuit of a display device includes: a first DA converter for converting a digital data to a gray-scale potential within a first potential range; and a second DA converter for...
8237595 Method and apparatus for bandpass digital to analog converter  
Systems and methods for providing a mechanism by which digital signals can be converted to analog signals with an efficient structure that reduces the number of filters required by providing a...
8232903 Finger-split and finger-shifted technique for high-precision current mirror  
A current cell array includes a number of current cell groups arranged such that they extend in a first direction. Each of the current cell groups is identified by a first identifier that...
8228317 Active matrix array device  
An active matrix array device has driver circuitry for providing address signals to the matrix elements, including digital to analogue converter circuitry. This has a voltage selector for...
8228223 Resistor string digital-to-analog converter  
A resistor string digital-to-analog converter includes a high-order resistor string, first high-order switches, a high-order decoder, a low-order decoder, and a conversion unit. The high-order...