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US20130336143 I-Q MISMATCH CALIBRATION AND METHOD  
Techniques are provided for reducing mismatch between the in-phase (I) and quadrature (Q) channels of a communications transmitter or receiver. In an exemplary embodiment, separate voltages are...
US20080232523 Method And System For Mixing A Plurality Of Audio Sources In An FM Transmitter  
A plurality of digital audio signals from a plurality of sources utilizing different clocks may be processed and transmitted via an FM transmitter. The plurality of signals may have different...
US20130328707 I-Q MISMATCH CALIBRATION AND METHOD  
Techniques are provided for reducing mismatch between the in-phase (I) and quadrature (Q) channels of a communications transmitter or receiver. In an exemplary embodiment, separate voltages are...
US20080272943 ANALOG-TO-DIGITAL CONVERSION CONTROLLER, OPTICAL RECEIVING DEVICE, OPTICAL RECEIVING METHOD, AND WAVEFORM-DISTORTION COMPENSATING DEVICE  
An optical receiving device of the present invention receives optical signals from an optical transmitting device which uses a modulation format wherein an optical intensity waveform of each...
US20120306677 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...
US20060114138 Method for calibrating a digital-to-analog converter and a digital-to-analog converter  
The invention describes a method for digitally calibrating a segmented current-steering D/A-converter. One embodiment of the present invention is a 14-bit DAC, where 6 MSB's are converted with two...
US20070001886 Integrated circuit device and electronic instrument  
An integrated circuit device includes a driver macrocell in which a plurality of circuit blocks are integrated into a macrocell. The driver macrocell includes a data driver block DB for driving...
US20090115769 DA converter, data line driving circuit, electro-optical device, driving method thereof, and electronic apparatus  
To simplify s configuration of a current mode DA converter. A data line driving circuit includes DA converting units U1 to Un. Each DA converting unit U1 to Un a voltage DA converting circuit for...
US20090052556 FREQUENCY INTERLEAVING METHOD FOR WIDEBAND SIGNAL GENERATION  
Wideband signal generation systems and methods are provided which employ frequency interleaving for generating wideband signals. A general method increases a digitally synthesized signal's...
US20080181337 Spur and Distortion Management Techniques for an RF Receiver  
A receiver (1800) includes a mixing digital-to-analog converter (DAC) (1807), a direct digital frequency synthesizer (DDFS) (1848), a first power detector (1826), and a first control circuit...
US20130106636 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...
US20080239106 REDUNDANT-BIT-ADDED DIGITAL-ANALOG CONVERTER, ANALOG-DIGITAL CONVERTER, AND IMAGE SENSOR  
A redundant-bit-added digital-analog converter has a first input terminal and a second input terminal and outputs a ramp voltage obtained by quantizing a voltage difference between a first...
US20080231487 DIGITAL-TO-ANALOG CONVERTER AND METHOD OF DIGITAL-TO-ANALOG CONVERSION  
A digital-to-analog convertor, and a methods of digital-to-analog conversion employ first and second PWM generators providing first and second PWM signals, said first PWM generator being...
US20050110666 Current driving apparatus and method for fabricating the same  
In a current driving apparatus for driving a display panel, allocation of some of transistors used for constructing current sources is exchanged between first and second DA converter circuits. For...
US20100329482 AUDIO DIGITAL TO ANALOG CONVERTER AND AUDIO PROCESSING APPARATUS INCLUDING THE SAME  
An audio DAC includes a delta/sigma modulator (DSM), a pulse width modulator (PWM) and an output unit. The DSM delta-sigma modulates an over-sampled digital signal to generate a multi-bit...
US20090058475 APPARATUS AND METHOD FOR DIGITAL FREQUENCY UP-CONVERSION  
Disclosed is an apparatus and a method for up-converting frequencies of digital Intermediate Frequency (IF) signals input through at least two paths, and then outputting IF signals to which at...
US20070096966 Data driver and organic light emitting display device using the same  
A data driver and an organic light emitting display device using the same, in which power consumption and a layout area thereof are reduced. The data driver includes: a shift registering part...
US20070115160 Self-referenced differential decoding of analog baseband signals  
Apparatus and methods of differentially decoding analog baseband signals are described. In one aspect, a wireless communication apparatus includes a baseband filtering stage and a differential...
US20100134336 CODEC PLATFORM APPARATUS  
A codec platform apparatus which can perform encoding or decoding regardless of a sampling frequency supported by a codec platform is provided. The codec platform apparatus includes an...
US20090051676 DRIVING APPARATUS FOR DISPLAY  
A driving apparatus for a display is provided. The driving apparatus for a display comprises: a digital/analog converter for receiving an input voltage lower than a source voltage used in a buffer...
US20060244647 Digital-to-analog converter and successive approximation type analog-to-digital converter utilizing the same  
In a digital-to-analog (D-A) converter, a plurality of respectively weighted capacitances are configured such that one ends of them are connected to an input terminal of a comparator and the other...
US20140104088 DIFFERENTIAL SWITCH DRIVE CIRCUIT AND CURRENT STEERING DIGITAL-TO-ANALOG CONVERTER  
A differential switch drive circuit includes a current source, a current control circuit including a pair of transistors having a pair of differential input terminals, a pair of differential...
US20070252740 Digital television receiver and method for processing a digital television signal  
A method of processing a digital television signal in a digital television receiver, the method includes receiving a digital television signal including a streaming data table carrying one or more...
US20060103563 Data driver, flat panel display and data converting method  
A data driver in a flat panel display comprises: a latch for receiving a data signal in series, and for outputting the data signal in parallel; and a digital-to-analog (D/A) converter for...
US20120176263 CURRENT SWITCH CIRCUIT AND DA CONVERTER  
According to one embodiment, a first switch transistor and a second switch transistor convert an input current to a first current and a second current by performing a switching operation on the...
US20100268516 SIGNAL SIMULATION APPARATUS AND METHOD  
The present invention relates to a method of simulating an initial component of a signal to approximate a component of a reference signal, the method characterised by the steps of; i) generating a...
US20070132620 ARRAY SUBSTRATE AND DISPLAY DEVICE  
An array substrate includes: a plurality of signal line groups, each of which is a set of a plurality of signal lines; a plurality of photoelectric conversion elements, each of which is connected...
US20080291070 DIGITAL/ANALOG CONVERTER AND TRANSMITTER  
According to an embodiment of the invention, there is provided a digital/analog converter includes: a decoder that converts a (n−1)-phase input digital signal to a n-phase output digital signal;...
US20100164765 DAC calibration circuits and methods  
Provided is a DAC with tuning circuitry in accordance with some embodiments for tuning current sources in the DAC. The DAC may be used for a sigma-delta converter in some embodiments.
US20070236377 DIGITAL-TO-ANALOG CONVERTER  
Embodiments of a digital-to-analog converter are disclosed.
US20060125670 Current cell and digital-to-analog converter using the same  
Provided are a current cell and digital-to-analog converter (DAC) using the same. The current cell includes a current source; a first transistor transmitting a current produced from the current...
US20100164933 LCD SOURCE DRIVER  
An LCD source driver may include a digital-to-analog converter including a sampling capacitor to sample, according to a signal, at least one of a first voltage and a second voltage. The LCD source...
US20090068958 FILTER FREQUENCY CHARACTERISTIC DETECTION DEVICE AND FILTER FREQUENCY CHARACTERISTIC TESTING DEVICE  
A filter frequency characteristic detection device includes a filter which receives a first signal and a second signal, a comparator which compares the first signal and the second signal which...
US20060227028 Simple digital interface for advance power supply control  
A power converter has a digital control that interfaces with an analog driver through a simple and efficient signal connection. A single signal may be used to encode frequency and pulse width...
US20050113948 Digital-to-analog audio conversion  
In the digital-to-analog conversion of an audio signal, a digital audio signal that comprises a plurality of digitally quantized samples of an audio stream is received. The digital audio signal is...
US20160204790 DIGITAL-TO-ANALOG CONVERTER, AND MOTOR DRIVING CONTROL APPARATUS AND METHOD USING THE SAME  
A digital-to-analog converter may include: a signal modulator configured to receive a signal having a first digital value, and modulate the signal having the first digital value to a signal having...
US20080316077 D/A CONVERTER  
An output from a resister string is selected with a signal of m upper bits of an input digital signal and converted to a pair of analog signals (VH, VL) having a width corresponding to n lower...
US20150200681 Segmented Digital-To-Analog Converter With Overlapping Segments  
In one embodiment, a segmented digital-to-analog converter (DAC) has two configurations (i.e., sub-DACs) with overlapping operating ranges and a data mapper that maps the digital input signal into...
US20070268170 System and Method for Spur Cancellation  
A system for spur cancellation comprises an input, an output, a memory, and a summer. A value corresponding to an energy level of a spur is stored in the memory. The summer is configured to...
US20050122243 Semiconductor integrated circuit for a radio apparatus and radio communication apparatus  
Adjustment data of first and second tracking adjustment circuits 11 and 12 are set in latch circuits 21 and 22. The plurality of pieces of adjustment data latched by the latch circuits 21 and 22...
US20100149014 SEMICONDUCTOR INTEGRATED CIRCUIT  
A semiconductor integrated circuit 10 includes a digital/analog conversion circuit 6. Test signals, which are supplied through signal lines Sig0T through Sig3T, are supplied to the digital/analog...
US20090086795 METHOD AND SYSTEM FOR A LOW-COMPLEXITY VARIABLE FREQUENCY OSCILLATOR USING DIRECT DIGITAL FREQUENCY SYNTHESIS  
Aspects of a method and system for a low-complexity variable frequency oscillator using direct digital frequency synthesis may include generating one or more digital output signals via a Direct...
US20080246642 Digital-to-analog signal converter, and digital-to-analog signal converting method  
A digital-to-analog signal converter includes a digital-to-analog signal converting unit adapted for converting a digital video signal into a pair of analog differential current signals by current...
US20060158360 Digital to analog converter  
A digital to analog converter comprises a plurality of conversion elements as well as a reference conversion element and further comprises mismatch calibration unit for calibrating at least one of...
US20060007029 D/A conversion apparatus with offset compensation function and offset compensation method for a D/A conversion apparatus  
It is an object of the present invention to enable a DC offset of a D/A converter to be removed substantially completely even when a DC offset exists in a comparator. An input switchover switch...
US20100103199 DRIVING APPARATUS  
A driving apparatus used for a display is disclosed. The driving apparatus includes a voltage divider, a first and a second digital to analog converter, and a first voltage amplifier. The voltage...
US20100002019 DIGITAL TO ANALOG CONVERTER, SOURCE DRIVER AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME  
A digital to analog converter includes a first decoder, a gamma reference voltage decoder unit and an active resistor string unit. The first decoder receives 2(N-2) first gamma voltages and...
US20070126616 Dynamically linearized digital-to-analog converter  
Provided is a digital-to-analog converter converting a digital signal into an analog signal. The digital-to-analog converter includes a decoder for selecting a current source from digital inputs,...
US20060071836 Digital to analog converter  
An output voltage proportional to a duty ratio of a PWM signal can be obtained without using a large-scale circuit, even when a high potential (input potential) of an inverter is low. The digital...
US20100289683 REFERENCE VOLTAGE GENERATION CIRCUIT, A/D CONVERTER AND D/A CONVERTER  
A reference voltage generation circuit of the present invention includes: a reference voltage generation part 12 that is connected between a first reference voltage terminal VRT and a second...

Matches 1 - 50 out of 66 1 2 >