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8027279 |
Echo cancellation
Embodiments related to echo compensation have been described and depicted. |
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8022850 |
Multiple-bit, digital-to-analog converters and conversion methods
Embodiments include DACs and methods for digital-to-analog conversion. A DAC includes an encoder and a plurality of DAC elements. The encoder maps each of a plurality of bits of a digital input... |
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8022851 |
DAC with data independent common mode dynamics
A current-steered DAC has first and second differential outputs for providing an analog output signal under control of a digital input signal. In operational use of the DAC, the output signal has... |
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8022971 |
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 two reference voltages of a plurality of reference voltages depending on upper bits of data, and a second... |
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8018363 |
Nonlinear mapping in digital-to-analog and analog-to-digital converters
In a high-fidelity digital modulator, a mapper is provided to minimize quantization noise, jitter, and cross-talk between multiple digital-to-analog or analog-to-digital converters. The mapper... |
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8018364 |
Control apparatus for a load supply device
A control apparatus for a supply device of a load, the supply device is of switching type and connected between a supply voltage and a reference voltage, the apparatus including a sigma-delta... |
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8018366 |
Data converter having a passive filter
Exemplary implementations of electrical circuits and systems are disclosed, and methods for signal processing including sampling and quantizing of amplitude and band limited signals implemented... |
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8013770 |
Decoder architecture with sub-thermometer codes for DACs
A digital-to-analog converter (DAC) for converting a digital signal to an analog signal includes a first thermometer decoder and a second thermometer decoder. The first thermometer decoder is... |
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8013769 |
Digital-to-analog converter and method of digital-to-analog conversion
In one embodiment, the DAC includes an analog gray voltage generation unit configured to generate a plurality of analog gray voltages, and a first decoder configured to select two different... |
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8013768 |
Integrated upstream amplifier for cable modems 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.... |
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8013771 |
Method and apparatus for bandpass digital-to-analog conversion
The disclosed embodiments provide method and apparatus for digital to analog conversion of a signal that may be limited to a bandpass frequency. In an exemplary embodiment, a bandpass DAC is... |
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8009073 |
Method and apparatus for generating an analog signal having a pre-determined pattern
A circuit configured to generate an analog signal having a pre-determined pattern. The circuit includes a plurality of digital-to-analog converters. Each of the plurality of digital-to-analog... |
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8009074 |
Digital-to-analog converter and code mapping method applied to the digital-to-analog converter
A digital-to-analog converter includes an operational amplifying circuit, a switched capacitor circuit, an R-string sub-circuit, and a direct-charge transfer circuit. The operational amplifying... |
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8009995 |
Method and apparatus for photonic digital-to-analog conversion
A method and apparatus for receiving a digital signal having a plurality of significant bits of resolution. The apparatus includes a mode locked laser comprising a single output. The apparatus... |
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8004438 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Circuit and method for dynamically selecting circuit elements
Techniques for dynamically selecting circuit elements to combat mismatches are described. In one design, an apparatus includes first, second, and third circuits. The first circuit receives input... |
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8004482 |
Apparatus for driving liquid crystal display device by mixing analog and modulated data voltage
An apparatus and method for driving a liquid crystal display device are disclosed in which the response speed of the liquid crystal can be increased without using a digital memory. The driving... |
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8004440 |
Transimpedance amplifier and analog-digital converter circuit
A transimpedance amplifier according to an exemplary aspect of the present invention includes a first terminal supplied with a first power supply voltage, and a second terminal supplied with a... |
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8004441 |
Small-area digital to analog converter based on master-slave configuration
A digital-to-analog (DAC) converter that includes a plurality of dynamically operated slave digital-to-analog (DAC) converters, each having a switched current mirror and a storage capacitor, and a... |
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8004439 |
Digital to analog converter
A digital to analog converter with two outputs controlled by an input signal with n-bits is disclosed. A reference voltage circuit generates (2n+1) reference voltages numbered from 1 to (2n+1). A... |
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7999706 |
Characteristic acquisition device, method and program
It is possible to reduce errors generated between multiple D/A conversion paths. A characteristic acquisition device includes [1] an arbitrary signal generator that converts a first (second) input... |
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7999712 |
Digital-to-analog converters and methods thereof
A digital-to-analog converter for converting a digital signal into an analog signal is provided. The digital-to-analog converter includes a preprocessing unit, a gain controller, a modulator and... |
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7999711 |
Transmitter digital-to-analog converter with noise shaping
A noise-shaping module including a first addition module configured to receive a digital input signal and a filtered output signal. A truncation module is configured to remove selected bits from... |
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7999709 |
Continuous-time image-reject filter with discrete-time feedback
Apparatus are provided for converting a discrete-time analog signal to a continuous-time analog signal. A module comprises a digital-to-analog converter and a filtering arrangement coupled between... |
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7994958 |
Multi-level feed-back digital-to-analog converter using a chopper voltage reference for a switched capacitor sigma-delta analog-to-digital converter
A multi-bit digital-to-analog converter has a reference voltage generator generating a reference voltage with an offset voltage; a switched capacitor stage for generating a plurality of output... |
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7994956 |
Digital-to-analog converter circuit, data driver, and display device using the digital-to-analog converter circuit
A data driver having a positive-polarity reference voltage generation circuit, a positive-polarity decoder, a first amplifier that outputs a positive-polarity gray scale voltage, a... |
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7995022 |
Digital-to-analog converter and image display device
Disclosed herein are a digital-to-analog converter and a video display device. The digital-to-analog converter includes a converting section. The converting section has a code converting section,... |
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7994952 |
Converter, conversion method, program, and recording medium
Provided is a highly accurate converter and the like that makes up for the instability of circuit elements, by focusing on a relationship between the Markov chain and β conversion. A converter 1... |
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7994957 |
Current steering digital-to-analog converter
A digital to analog converter (DAC) module receives an input digital signal having a first data rate and is associated with a first frequency, the DAC module also receiving a synchronization... |
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7990300 |
D/A conversion circuit
DAC includes a reference current setting unit (RCSU) that sets reference current, and current cell output unit (CCOU) including plurality of current sources, the current sources being configured... |
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7986258 |
Analog-digital conversion cell and analog-digital converter
There is provided an analog-digital conversion cell being an analog-digital conversion cell that performs an N-bit analog-digital conversion (where N is a natural number) and including: a... |
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7982581 |
Digital potentiometer architecture with multiple string arrays allowing for independent calibration in rheostat mode
Digital potentiometer architecture is disclosed, composing of an integrated circuit containing multiple string arrays, each having a plurality of switching devices and an array of resistors. The... |
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7983640 |
Receiver circuit
A receiver circuit for receiving an analog signal comprises a mixer device, a first integrator device coupled to the mixer device, a second integrator device following the first integrator device,... |
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7982647 |
Delta-sigma A/D converter
An object of the present invention is to provide a highly accurate delta sigma A/D converter. Disclosed is a delta sigma A/D converter including: a first integration circuit to generate a first... |
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7982649 |
Device for the low-distortion transformation, particularly amplification of signals
The invention describes a device for the low-distortion conversion, especially amplification, of signals. In one embodiment, the device comprises a digital-to-analog converter having adjustable... |
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7982650 |
Digital-to-analog converter (DAC) and an associated method
The digital-to-analog converter in accordance with the present invention comprises an R-2R transistor-only ladder converter and a digital controller. The controller connects to the R-2R... |
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7978113 |
Analog-to-digital converter having output data with reduced bit-width and related system and method
A circuit includes an analog-to-digital converter configured to receive an analog input signal and generate first digital values at a first sampling rate. The first digital values have a first... |
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7978110 |
Digital-to-analog converter
A system for converting a digital signal to an analog signal is provided. The present invention provides a digital-to-analog converter (DAC) that can convert a large bit value digital signal to a... |
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7978109 |
Output apparatus and test apparatus
Provided is an output apparatus for outputting a current from an output end, including: a plurality of current sources; a plurality of switches provided in association with the plurality of... |
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7973687 |
Differential switch, D/A converter, semiconductor integrated circuit and communication apparatus
A differential switch circuit includes a first differential switch basic circuit (1) and a second differential switch basic circuit (2). The first differential switch basic circuit (1) has a first... |
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7974363 |
Receiver, receiving method, filter circuit, and control method
A receiver supporting a plurality of radio communication systems having different specifications includes a setting unit, a clock generation circuit, a voltage-current conversion amplifier, a... |
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7973689 |
Bandpass multi-bit sigma-delta analog to digital conversion
Examples of a system and method for sigma-delta analog-to-digital conversion of an electrical input signal are disclosed. A bandpass-filtered signal based on an electrical input signal and an... |
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7973686 |
Integrated circuit device and electronic instrument
An integrated circuit device includes a plurality of data line driver circuits, a first correction D/A conversion circuit, and a plurality of D/A conversion circuits. Each of the data line driver... |
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7973690 |
Gamma voltage generation circuit
A gamma voltage generation circuit is provided. An offset voltage generator generates a first offset voltage by dividing a voltage difference between a first input voltage and a second input... |
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7969340 |
Noise-shaped segmented digital-to-analog converter
A segmented digital-to-analog converter (DAC) is disclosed. In the present invention, the segmented DAC of the present invention comprises a signal component processing stage and a plurality of... |
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7969335 |
Digital correction of nonlinearity errors of multibit delta-sigma digital to analog converters
Digital correction of multibit ADAC nonlinearities for error feedback DACs is provided. The integral nonlinearity (INL) error of the multibit ADAC is estimated (on line or off line) by a... |
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7969338 |
Decoding circuit for flat panel display
The present invention relates to a decoding circuit for a flat panel display, and more particularly to a decoding circuit for a flat panel display wherein a miniaturization is possible by reducing... |
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7965213 |
Element-selecting method capable of reducing toggle rate of digital to analog converter and module thereof
An element-selecting method is utilized for selecting the converting elements of the DAC to perform the digital-to-analog conversion. The element-selecting method first determines whether the... |
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7965212 |
DAC circuit using summing junction delay compensation
Techniques are disclosed for improving the dynamic performance of digital-to-analog converters (DAC), by compensating for the unique delay characteristics of each bit in the DAC summing junction... |
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7965211 |
High power DAC power amplifier
A power amplifier architecture includes a plurality of non-linear optically driven power amplifier modules. The plurality of non-linear optically driven power amplifier modules are selectively... |
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7965131 |
Bias voltage generation circuit and driver integrated circuit
A bias voltage generation circuit includes a data holding section, a correction value storage section, a computing circuit, a voltage dividing circuit and a selection circuit. The data holding... |