Patents
Patents for H03M 1 - Analogue/digital conversion; Digital/analogue conversion (31,168)
11/1999
11/23/1999US5990814 Method and circuit for calibration of flash analog to digital converters
11/23/1999US5990707 Method and system for sliced integration of flash analog to digital converters in read channel circuits
11/18/1999WO1999059250A1 Dynamic digital to synchro converter
11/18/1999WO1999059055A1 Method for analog-digital conversion of analog signals and corresponding analog-digital converter array
11/17/1999EP0957585A2 Method for correcting errors in parallel A/D conversion, corrector and parallel A/D converter
11/17/1999CN1235421A Noise protection circuits
11/16/1999US5987491 General purpose charge mode analog operation circuit
11/16/1999US5986599 Voltage comparator for analog-to-digital converter
11/16/1999US5986595 Reduction of mismatch errors for multibit oversampled data converters
11/11/1999WO1999057671A1 Method and circuit for compensating the non-linearity of capacitors
11/11/1999DE19828399C1 High speed digital to analog converter for PWM output signals of lambda-probe in motor vehicle
11/10/1999EP0955678A1 Improvements in or relating to digital-to-analog converters
11/10/1999EP0955582A2 Timer for an A/D converter
11/10/1999EP0954907A1 Digital to analogue converter and method of operating the same
11/10/1999EP0897617B1 Digital to analogue converter with reference signal
11/10/1999CN1234654A Digital to analog convertor and semiconductor integrated circuit using same, and detection method therefor
11/09/1999US5982841 Time counting circuit, pulse converting circuit and FM demodulating circuit
11/09/1999US5982820 Bandpass phase tracker with hilbert transformation before plural-phase analog-to-digital conversion
11/09/1999US5982811 Method for efficient sampling in a correlator
11/09/1999US5982551 Optical encoder wheel with split lens ring
11/09/1999US5982318 Linearizing offset cancelling white balancing and gamma correcting analog to digital converter for active pixel sensor imagers with self calibrating and self adjusting properties
11/09/1999US5982317 Oversampled digital-to-analog converter based on nonlinear separation and linear recombination
11/09/1999US5982312 A/D converter circuit capable of compensating A/D-converted digital signals
11/09/1999US5982311 A/D conversion device
11/09/1999US5982310 Digital signal processing apparatus
11/09/1999US5982205 Low voltage sample and hold circuits
11/04/1999WO1999056397A1 Programmable digitizer
11/04/1999WO1999056396A2 Testable ic having analog and digital circuits
11/04/1999DE19819069A1 Schaltungsanordnung zur arithmetischen Verknüpfung eines Analogsignals mit einem in digitaler Form vorliegenden Wert sowie Verfahren und Schaltungsanordnung zur Bestimmung eines Winkels Circuitry for arithmetic combination of an analog signal with a present value in digital form and method and circuit for determining an angle
11/03/1999EP0954158A2 Data optimized codec
11/03/1999EP0832518A4 Dac having separate main and correcting outputs
11/03/1999EP0739549B1 Method and apparatus for calibrating a gain control circuit
11/02/1999US5977953 Mechanic encoder having single conductors ring
11/02/1999US5977900 D/A converter
11/02/1999US5977898 Decoding scheme for a dual resistor string DAC
11/02/1999US5977897 Resistor string with equal resistance resistors and converter incorporating the same
11/02/1999US5977894 Digital calibration for analog-to-digital converters with implicit gain proration
11/02/1999US5977893 Method for testing charge redistribution type digital-to-analog and analog-to-digital converters
11/02/1999CA2156889C Method and apparatus for encoding and decoding data
10/1999
10/28/1999WO1999055006A1 Two stage resistive divider dac using pmos and nmos switches
10/28/1999WO1999055005A1 Analog-to-digital converter with successive approximation
10/28/1999DE19910755A1 Linear current sensing circuit for motor controller
10/28/1999DE19820735C1 Zeitgeber für einen A/D-Wandler Timer for an A / D converter
10/28/1999CA2329119A1 Analog-to-digital converter with successive approximation
10/27/1999EP0952672A2 Digital-to-analog conversion circuit and analog-to-digital conversion device using the circuit
10/27/1999EP0952671A2 Pipeline analog-to-digital conversion system using a modified coding scheme and method of operation
10/27/1999CN1233112A Digital-to-analog converter and digital-to-analog converting method
10/26/1999US5973633 Weighted capacitor array with selective grouping to form array elements
10/26/1999US5973632 Sub-range flash analog-to-digital converter
10/26/1999US5973631 Test circuit and method of trimming a unary digital-to-analog converter (DAC) in a subranging analog-to-digital converter (ADC)
10/26/1999US5973536 Switched capacitor filter
10/26/1999US5973535 Semiconductor circuit using feedback to latch multilevel data
10/26/1999US5973523 Time counting circuit, sampling circuit, skew adjusting circuit, and logic analyzing circuit
10/21/1999WO1999053619A2 A multi-output digital to analog converter
10/21/1999DE19917357A1 Receiver for nonlinear signal for detecting original data from binary data stream input signal enables models of sampled signals to be produced from preceding, current and future bit data, access time phase correction
10/21/1999DE19916879A1 Self calibrating current-controlled digital to analog converter
10/20/1999EP0951146A1 A digital-to-analog converter
10/20/1999EP0950287A2 Analog-to-digital conversion
10/20/1999CN1232321A High speed and high-accuracy A/D converter
10/19/1999US5969659 Analog to digital converters with extended dynamic range
10/19/1999US5969658 R/2R ladder circuit and method for digital-to-analog converter
10/19/1999US5969657 Digital to analog converter
10/19/1999US5969656 Digital-to-analog converter for increasing number of bits converted
10/19/1999US5969653 Testing control signals in A/D converters
10/14/1999WO1999035604A3 Synchro-to-digital conversion with windowed peak detection
10/13/1999EP0949755A2 Switched capacitor amplifier with one-clock delay
10/13/1999EP0948844A2 Method and device for detecting bits in a data signal
10/13/1999EP0948843A2 Sigma-delta modulator with improved gain accuracy
10/12/1999US5966088 Analog/digital converter and voltage comparator capable of fast producing of output offset voltage
10/12/1999US5964708 Beamformed ultrasonic imager with delta-sigma feedback control
10/07/1999WO1999040682A3 Combined input circuit
10/06/1999EP0948139A1 Stabilization of single loop sigma delta modulators of a high order
10/06/1999EP0948122A2 Analog-to-digital converter for processing analog signals from a large array of detectors
10/05/1999US5963604 Communication signal receiver with sampling frequency control
10/05/1999US5963590 Method for receiving digital radio signals and a digital radio signals receiver
10/05/1999US5963510 Time measurement device
10/05/1999US5963161 Iterative mapped analog-to-digital converter
10/05/1999US5963160 Analog to digital conversion using nonuniform sample rates
10/05/1999US5963159 Arrangement and method for controlling gain of analog-to-digital converters
10/05/1999US5963158 Current amplifier and current mode analog/digital converter using the same
10/05/1999US5963157 Method and apparatus for the addition and removal of a dither signal
09/1999
09/30/1999WO1999049381A1 Dither noise source with notched frequency spectrum
09/30/1999DE19810826A1 Measurement device for digital detection of analog measurement signals
09/29/1999EP0945987A2 Process for the linearization of the transfer characteristic of an analog-to-digital converter and a respective circuit
09/29/1999CN1230053A Twelve position mode/digit converting card
09/29/1999CN1229923A Voltage indicator using serial comparison voltage measurement
09/28/1999US5959565 Switched capacitor
09/28/1999US5959564 Broken thermometer code and comparator error correction by pseudo majority gate decoding in analog-to-digital converters
09/28/1999US5959563 Analogue to digital converter with adaptive sample timing based on statistics of sample values
09/28/1999US5959561 Digital analog converter with means to overcome effects due to loss of phase information
09/28/1999US5959497 Process for controlling the power of the transmission amplifier of radio equipment
09/28/1999US5959469 Chopper comparator showing high speed and low power operations free of malfunction under variation of logical threshold voltage of invertor
09/28/1999CA2181809C Split frequency band signal digitizer and method
09/28/1999CA2181807C Wideband frequency signal digitizer and method
09/28/1999CA2162516C An analog-to-digital converter circuit
09/23/1999WO1999048219A1 METHOD AND APPARATUS FOR CLOCK TIMING RECOVERY IN ψDSL, PARTICULARLY VDSL MODEMS
09/23/1999WO1999048210A1 Da conversion circuit
09/23/1999WO1999048206A2 Bicmos switch circuit
09/23/1999WO1999039440A3 Device for processing a digital signal
09/23/1999WO1999034572A3 Method and apparatus for representing an analog waveform as digital messages