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7436413 Image data processing apparatus and image display apparatus  
The invention provides an image data processing apparatus including a memory for storing plural values indicating plural brightnesses when a predetermined display element is driven based on...
7436341 Digital/analog converting apparatus and digital/analog converter thereof  
A digital/analog converting apparatus and digital/analog converter are provided. The digital/analog converter includes an operational amplifier, a first filter, a first switch, a second filter, a...
7436340 Timing generating circuit and digital to analog converter using the same  
A current-cell type D/A converter using a timing generating circuit for converting a digital code to the corresponding differential voltage Vout between a first analog voltage and a second voltage...
7436339 Method and apparatus to emulate a filter using digital elements  
A system, apparatus, method and article to emulate a filter using digital elements are described. The apparatus may include a digital-to-analog converter having an impulse response emulator, the...
7436337 Transmitter digital-to-analog converter with noise shaping  
A noise shaping module comprises a first addition module that receives a digital input signal and generates an output signal. A truncation module generates a truncated output signal based on an...
7436335 Data driver and liquid crystal display having the same  
An exemplary data driver chip ( 23 ) includes a multiplexer ( 31 ); a first digital/analog (D/A) converter ( 32 ); and a second digital/analog (D/A) converter ( 33 ). The multiplexer receives a...
7429942 Radio communication device  
A digital signal processor for handling, as a digital signal, data to be transmitted or received and a analog signal processor for handling the data as an analog signal are so arranged as to be...
7429940 Delta-sigma modulator circuit with limiter and method therefor  
A delta-sigma modulator circuit with limiter and method provide extended dynamic range in noise-shaped pulse generators. A limiting circuit is provided to adjust the output of the quantizer of the...
7427937 Multi-channel digital/analog converter arrangement  
A multi-channel digital/analog converter arrangement comprises at least two data channels for receiving and forwarding a corresponding number of digital data input signals comprising respective...
7426372 Piecewise linearizer circuit for radio frequency amplification  
An apparatus and method for amplifying a radio frequency signal including, generating a plurality of shaped pulses utilizing a piecewise linearizer circuit, applying the plurality of shaped pulses...
7425941 Source driver of liquid crystal display  
A TFT-LCD source driver for driving L channels of a liquid crystal panel (where L is a positive integer), the TFT-LCD source driver comprising a plurality of DACs (digital-to-analog converters) for...
7425913 Bit-adjacency capacitor-switched DAC, method, driver and display device  
A cyclic digital to analog converter (CDAC) includes: first and second capacitors C 1 and C 2 ; an arrangement of switches selectively controllable to connect C 1 and C 2 in one of at least two...
7425912 Digital-to-analog converter with controlled buffered inputs  
A DAC circuit is provided which implements a buffered DAC input where the buffer is provided by a differential amplifier whose supply rail is correlated with the input to the DAC. In this way it is...
7425911 Signal-to-noise ratio when using fewer bits than the number of output bits of an analog to digital converter  
Improving signal-to-noise ratio (SNR) when using fewer bits than the number of output bits of an ADC as digital representation of the strength of the samples of an input signal. In an embodiment,...
7425910 Transmitter digital-to-analog converter with noise shaping  
A noise shaping circuit and method for operating the same includes a first addition module that receives a digital input signal. A first filter module generates a first filtered output signal based...
7425909 Low-noise programmable current source  
A low-noise programmable current source includes an output digital to analog converter for providing an output load current; and a control circuit, responsive to an input defining a predetermined...
7423573 Architecture combining a continuous-time stage with a switched-capacitor stage for digital-to-analog converters and low-pass filters  
A digital to analog converter (DAC) includes a first continuous-time stage that receives an input signal associated with a digital signal and performs continuous-time digital-to-analog conversion...
7423570 DA converter, AD converter, and semiconductor device  
A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an...
7423569 Method and system for a control scheme on power and common-mode voltage reduction for a transmitter  
Provided is a method and system for controlling current characteristics in a transceiver having a transmitter. The method includes identifying a phase control signal from an adjacent current cell...
7423558 Digital/analog conversion circuit  
A digital/analog conversion circuit includes a plurality of capacitors, a voltage application section, a connection section, and a control section. The control section is operable to perform the...
7421055 Signal processing apparatus and signal processing method  
In order to output an analog signal from which unnecessary out-of-band noise components are appropriately removed in accordance with digital data to be reproduced, a reproduction frequency...
7420496 Digital/analog converting apparatus with high resolution  
A high resolution digital/analog converting apparatus for a spatial optical modulator includes a resistor string including a plurality of resistors connected to each other in series between...
7420495 Current source cell arrangement and digital-to-analog converter  
An object of the present invention is to form a highly accurate current source for D/A converters. Letters from a 1 to a n where n is at least 4 represent current source cells that output...
7420493 Extended range delta-sigma modulator and delta-sigma power converter  
Devices, systems, and methods for providing delta-sigma modulation in conjunction with analog-to-digital or digital-to-analog signal conversion are disclosed. The delta-sigma modulator and...
7420488 Apparatus and method for setting filter coefficient, and recording medium having a program recorded thereon  
Echo preventing circuit includes first and second FIR filters. The outputs of the first and second FIR filters are converted into first and second analog signals. An input/output terminal outputs...
7417572 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 remaining...
7414560 Wireless communication system including an audio underflow protection mechanism operative with time domain isolation  
A wireless communication device reduces undesired audio underflow in a digital to analog receive path that employs time domain isolation. One or more buffers in the receive path receive processed...
7414559 Dynamic bias circuit  
A bias circuit includes a digital to analog converter (D 2 A) generating an output representing a voltage level for tuning an analog signal. The D 2 A is coupled to a primary register frame that is...
7414558 Digital to analog conversion using summation of multiple DACs  
A method for converting a digital signal to an analog signal, said method including a plurality of signal sources, preferably current sources, one or more of said signal sources being variable...
7414550 Methods and systems for sample rate conversion and sample clock synchronization  
The architecture for a combined universal sample rate converter and a sample clock synchronizer is presented. The universal sample rate converter can be applied, for example, to audio samples...
7411536 Digital-to-analog converter  
A digital-to-analog converter and method for transforming a digital value into an analog signal are disclosed. The digital-to-analog converter has a voltage generator, a voltage selector, a...
7411535 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...
7403148 Methods and apparatus to balance reference settling in switched-capacitor pipelined digital to analog converter  
The linearity of switched-capacitor, pipeline digital to analog converters is improved by balancing the settling behavior of its pre-charge switches. In more detail, a switched capacitor DAC...
7403147 Precision capacitor array  
A digital capacitor array with individually shielded unit capacitors and combination binary—thermometer coded addressing is disclosed. Such a capacitor array may be part of a digitally controlled...
7403146 Decoder circuit  
A decoder circuit that selects a grayscale voltage responsive to digital input includes a first transistor circuit that selects grayscale voltages greater than a certain voltage and a second...
7403145 Data driver and driving method of organic light emitting display device using the same  
A data driver capable of generating data signals with desired voltage values. The data driver includes a first digital-analog converter including a plurality of first switches, the first...
7403144 Pulse domain encoder and filter circuits  
A pulse circuit to solve a system of differential equations in the pulse domain based on analog or inputs or time-encoded pulse inputs. Intrinsically linear 1-bit digital to analog converters are...
7400285 Circuit for reconstructing an analog signal from a digital signal and transmission system, particularly for WCDMA cellular telephony, including such circuit  
A circuit for reconstructing an analog signal starting from a digital input signal includes a digital to analog converter and a low pass-filter connected at the output of the converter for...
7400284 Low noise data conversion circuits and methods and systems using the same  
A circuit including a first element sampling noise from and discharging noise to a signal line in response to an input signal transitioning on selected edges of a clock signal. A second element...
7400281 Regulator of a digital-to-analog converter and related converter  
A regulator for a digital-to-analog converter having in input a digital signal and suitable for providing an analog signal in output, the regulator including at least one pair of buffers having in...
7397407 D/A conversion circuit and A/D conversion circuit  
A D/A conversion circuit for performing D/A conversion at high speeds. The D/A conversion circuit includes a resistor string including a plurality of resistor elements connected between a...
7397291 Clock jitter minimization in a continuous time sigma delta analog-to-digital converter  
A digital-to-analog converter adapted for use as a feedback converter in a continuous time sigma delta analog-to-digital converter. The digital-to-analog converter has a discrete time digital...
7394419 Decoding circuit for decoding multibit data, and a display apparatus utilizing the same  
In each of sub-decoding circuits at a first stage provided for a plurality of output candidates arranged adjacently, for selecting corresponding output candidates in accordance with a bit of...
7391842 Direct synthesis clock generation circuits and methods  
Clock signal generation circuitry includes input circuitry for receiving a frequency control input signal and a clock signal and generating a memory address therefrom, a memory for storing digital...
7388532 Overdrive digital-to-analog converter, source driver and method thereof  
An overdrive digital-to-analog converter (DAC), a source driver, and a method thereof are provided. The DAC comprises a voltage divider unit, a selection unit, a buffer unit, and a detection unit....
7388531 Current steering DAC using thin oxide devices  
A current steering circuit includes a multitude of current stages each including an associated current source transistor, and first and second cascode transistors coupled in series with the...
7385544 Reference voltage generators for use in display applications  
A multi-reference voltage generator includes an interface controller, a first bank of N m-bit registers and a second bank of N m-bit registers. A first multiplexer has inputs connected to outputs...
7385543 Systems and methods for asynchronous triggering of an arbitrary waveform generator  
A system and method for asynchronous triggering in a waveform generator comprising a DAC sample clock for generating DAC sample clock signal. The system includes a sequencer clock for generating a...
7385542 Digitizer module, a waveform generating module, a converting method, a waveform generating method and a recording medium for recording a program thereof  
A digitizer module comprises an AD converter for sampling a pair of analog signals at a predetermined time interval and converting into a first and second digital signals respectively, a second...
7385541 Power amplifying apparatus, power combining system and delay measuring method for power combining system  
A power amplifying apparatus includes a distributing unit that divides an input digital signal to a plurality of the input digital signals so as to distribute the input digital signals to a...
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