Patents
Sitemap › H03 - Basic electronic circuitry › H03M - Coding, decoding or code conversion, in general › H03M 3 - Conversion of analogue values to or from differential modulation
Patents for H03M 3 - Conversion of analogue values to or from differential modulation (7,070)
03/1997
03/26/1997EP0764368A1 Oversampled high-order modulator
03/25/1997US5614904 Balance companded delta conversion for homodyne receiver
03/19/1997EP0763278A2 Quadrature signal conversion device
03/19/1997EP0503061B1 Read-out of photodiodes using sigma-delta oversampled analog-to-digital converters
03/18/1997CA2042821C Analog to digital converter
03/12/1997EP0762657A2 Distributed oversampling analog to digital converter with optical links
03/12/1997EP0762656A2 Analog/digital converter
03/12/1997EP0762647A1 Comb filter with a smaller number of delay elements
03/11/1997US5610606 1-bit D/A conversion circuit
03/04/1997US5608401 Three-level digital-to-analog converter for low-power consumption
03/04/1997US5608400 Selectable intermediate frequency sigma-delta analog-to-digital converter
02/1997
02/25/1997US5606319 Method and apparatus for interpolation and noise shaping in a signal converter
02/20/1997WO1997006601A1 Multi-bit sigma-delta dac
02/13/1997WO1996041420A3 Method and apparatus for multiplexed oversampled analog to digital modulation
02/06/1997WO1996015484A3 Monolithic pc audio circuit
02/05/1997EP0757461A2 Method of estimating signal quality for a direct sequence spread spectrum receiver
02/05/1997EP0757446A2 Analogue to digital and digital to analogue converters
02/04/1997US5600320 Variable sample rate DAC
01/1997
01/29/1997EP0756384A2 A method of improving the stability of a sigma-delta modulator employing dither
01/29/1997EP0756377A1 Matched filter circuit
01/28/1997US5598159 Method for the fast decoding of the output signals of sigma delta modulators
01/28/1997US5598157 Sigma Delta analog to digital converter with three point calibration apparatus and method
01/21/1997US5596602 Data compression rate control method and apparatus
01/14/1997US5594612 Analog-to-digital converter with digital linearity correction
01/14/1997US5594442 Configuration programming of a digital audio serial port using no additional pins
01/14/1997US5594440 A/D converter having a variable integrator whose time constant can be changed
01/08/1997EP0752176A1 Circuit for conditioning and digitising an analogue signal
01/07/1997US5592165 Method and apparatus for an oversampled digital to analog convertor
12/1996
12/25/1996CN1138795A Signal processing apparatus and method
12/19/1996WO1996041422A1 Delta-sigma modulator
12/19/1996WO1996041420A2 Method and apparatus for multiplexed oversampled analog to digital modulation
12/19/1996WO1996041419A1 Digitally controlled oscillator for a phase-locked loop
12/18/1996EP0748537A1 Sigma-delta converter having a digital logic gate core
12/18/1996EP0748536A1 HIGH LEVEL TYPE $m(S)$g(D) ANALOG-TO-DIGITAL CONVERTER
12/18/1996EP0336502B1 Method of and device for encoding a speech parameter such as the pitch, as a function of time
12/17/1996US5585802 Multi-stage digital to analog conversion circuit and method
12/17/1996US5585801 Analogue-to-digital converters and digital modulators
12/12/1996WO1996039739A2 Hybrid analog-to-digital converter for low power applications, such as use in an implantable medical device
12/11/1996EP0748124A2 Signal processing apparatus and method
12/10/1996US5583501 Digital-to-analog converter with digital linearity correction
12/08/1996CA2170469A1 Signal processing apparatus and method
12/03/1996CA1338767C Differential coding circuit
11/1996
11/28/1996WO1996037963A1 Data acquistion system
11/26/1996US5579247 Method and apparatus for decreasing the interference and noise sensitivity of a ratiometric converter type of circuit
11/21/1996WO1996031943A3 Quadrature signal conversion device
11/13/1996EP0742645A2 Multichannel sigma-delta A/D converters with high throughput
11/12/1996US5574455 Digital to analog converter and frequency synthesizer using the converter
11/12/1996US5574454 Digital phase-locked loop utilizing a high order sigma-delta modulator
11/12/1996US5574452 Single bit bandpass analog-to-digital converter
11/06/1996EP0740863A1 Pulse density mapping method for delta sigma modulators
11/05/1996US5572107 Switched capacitor network
10/1996
10/31/1996WO1996034465A1 Method and device for transmitting analogue signals by means of a transmission system using optical transmission lines
10/31/1996CA2219585A1 Method and device for transmitting analogue signals by means of a transmission system using optical transmission lines
10/30/1996EP0739549A1 Method and apparatus for calibrating a gain control circuit
10/30/1996CN1134564A Semiconductor device, circuit having device, and correlation calculation apparatus, signal converter, and signal processing system utilizing the circuit
10/24/1996WO1996028889A3 Digital phase-locked loop utilizing a high order sigma-delta modulator
10/22/1996US5568520 Slope drift and offset compensation in zero-IF receivers
10/15/1996US5565930 Receiver with oversampling analog-to-digital conversion for digital signals accompanied by analog TV signals
10/15/1996US5565868 Modulated feedback loop analog-to-digital converter
10/15/1996US5565867 Distributed analog to digital converter with optical links
10/10/1996WO1996031943A2 Quadrature signal conversion device
10/08/1996US5563597 Switched-capacitor one-bit digital-to-analog converter with low sensitivity to op-amp offset voltage
10/02/1996EP0735694A1 Low price device for the aquisition of electrical signals according to ARINC 429 standard
10/01/1996US5561660 Offset and phase correction for delta-sigma modulators
10/01/1996US5561425 Multiplexed delta-sigma analog-to-digital converter
09/1996
09/28/1996CA2172197A1 Small-size, integrattable electrical signal acquisition device, in compliance with arinc 429 standard
09/25/1996EP0734173A2 Fixed rate transmission system with selection of compressor configuration and corresponding method
09/25/1996EP0734125A1 Delta sigma analog-to-digital converter
09/24/1996US5559514 Analog-to-digital converter with sigma-delta duty cycle encoded output
09/19/1996WO1996028893A1 Balance companded delta conversion for homodyne receiver
09/19/1996WO1996028892A1 Variable sample rate dac
09/19/1996WO1996028889A2 Digital phase-locked loop utilizing a high order sigma-delta modulator
09/19/1996WO1996028885A1 Slope, drift and offset compensation in zero-if receivers
09/19/1996CA2214810A1 Balance companded delta conversion for homodyne receiver
09/17/1996US5557635 Voice encode/decode subsystem in a system for acquisition of test data using pulse code modulation
09/17/1996US5557187 Switched capacitor network
09/11/1996EP0731566A2 Circuit arrangement for the conversion of a 1-bit digital signal into an analog signal
09/03/1996US5552785 Digital phase-locked loop utilizing a high order sigma-delta modulator
08/1996
08/28/1996CN1129866A Signal processing method and apparatus thereof
08/27/1996US5550544 Signal converter, noise shaper, AD converter and DA converter
08/22/1996WO1996025800A1 Over-sampling type a/d converter
08/22/1996WO1996025795A1 A fast sigma-delta modulator having a controlled clock generator
08/22/1996WO1996025793A1 Combination d/a converter and fir filter utilizing active current division and method
08/20/1996US5548286 Analogue and digital convertors using pulse edge modulators with non-linearity error correction
08/14/1996EP0726656A1 Noise cancelling circuit and arrangement
08/13/1996US5546039 Charge dissipation in capacitively loaded ports
08/07/1996EP0725357A2 Semiconductor device, circuit having the device, and correlation calculation apparatus, signal converter, and signal processing system utilizing the circuit
08/06/1996US5544081 Output filter for oversampling digital-to-analog converter
08/06/1996US5543795 Hybrid analog-to-digital convertor for low power applications, such as use in an implantable medical device
07/1996
07/30/1996US5541864 Arithmetic-free digital interpolation filter architecture
07/30/1996US5541600 Signal processing circuit including a variable gain input stage
07/30/1996US5541599 Data independent loading of a reference in a discrete time system
07/24/1996EP0723219A2 Control of clocked state machines
07/24/1996EP0480012B1 Multiaccumulator sigma-delta fractional-n synthesis
07/23/1996US5539403 D/A conversion apparatus and A/D conversion apparatus
07/16/1996US5537113 A/D or D/A conversion using distribution of differential waveforms to interleaved converters
07/09/1996US5534827 Modulator
07/03/1996EP0720301A1 Three-level digital-to-analog converter for low-power consumption
07/03/1996EP0719478A1 Digital to analog conversion using nonuniform sample rates
07/03/1996EP0719477A1 Analog to digital conversion using nonuniform sample rates
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