Patents
Patents for H03M 1 - Analogue/digital conversion; Digital/analogue conversion (31,168)
01/1991
01/16/1991EP0408115A1 Signal-source arrangement
01/16/1991EP0407859A1 High speed auto zero comparator
01/16/1991EP0154654B1 Device for detecting position of rotor of motor
01/15/1991US4985702 Analog to digital converter with second order error correction
01/10/1991WO1991000499A1 Encoder
01/09/1991EP0407048A2 A dual channel A/D and D/A converter
01/09/1991EP0406973A1 Analog-to-digital converter
01/09/1991EP0406508A1 Device for reducing the redundancy in blocks of digital video data in DCT encoding
01/09/1991CN1048471A Acquisition method and device allowing to precisely digitize analog signals
01/09/1991CN1011178B A/d converter controlled by circulation of power supply
01/08/1991US4983974 Analog-to-digital conversion by varying both inputs of a comparator utilizing successive approximation
01/08/1991US4983973 Non-linear analog-to-digital converter
01/08/1991US4983971 Superconducting
01/08/1991US4983969 Successive approximation analog to digital converter
01/08/1991US4983968 Parallel analog-digital converter with error-correction circuit
01/08/1991US4983925 Signal sampling device for minimizing the errors effecting successively stored signal samples
01/03/1991DE3921272A1 Numerically integrating A=D converter - process input pulses using integrating parallel converter to increase resolution
01/02/1991EP0406080A1 Method and apparatus for registering analogue data allowing accurate digitization
01/02/1991EP0404980A1 Capacitance-type measuring method for absolute measurement of positions
01/02/1991EP0404975A1 Capacitive type measurement transducer with improved electrode arrangement
01/02/1991EP0404775A1 Method and apparatus for high resolution analog-digital-analog transformations
01/02/1991CA1278623C Current-steering digital-to-analog converter for providing bi-directional currents through a load
01/01/1991US4982194 Back-sampling charge redistribution analog to digital converter
01/01/1991US4982193 Analogue to digital conversion: method and apparatus therefor
01/01/1991US4982192 Digital-to-analog converter having common adjustment means
01/01/1991US4982191 Clamping apparatus and gain control apparatus
01/01/1991US4982190 Digital arrangement having for its object to shunt ground separations at video circuits
01/01/1991US4982189 Encoder with wide index
01/01/1991US4982118 Data acquisition system having a metastable sense feature
01/01/1991US4982085 Incremental optical encoder with radiation regulation means
12/1990
12/29/1990CA2020096A1 Acquisition method and device giving an accurate digitization of analog signal
12/27/1990WO1990016114A1 Digital to analog converters
12/27/1990EP0404535A2 Bandwidth compression device
12/27/1990EP0404476A2 Comparator circuitry
12/27/1990EP0404237A2 Method and device for noise supression of a digital signal
12/27/1990EP0143354B1 Multistage angle encoder
12/26/1990CN1011018B Extrema coding digitizing signal processing method and apparatus
12/26/1990CN1011013B Sample-and-hold-stage and its use in parallel a/d converters
12/26/1990CN1011012B Digital feedback double sampling a/d converter of high precision
12/26/1990CN1010992B Coding mode for high-density digital recording in multiple tracks
12/25/1990US4980687 Digital demodulator
12/19/1990EP0402742A2 Noise shaping requantization circuit
12/19/1990CN1047948A Apparatus for digitally controlling d.c. value of processed signal
12/18/1990US4979177 Enhanced counter/timer resolution in a logic analyzer
12/18/1990US4978959 Analog to digital converter, a digital to analog converter and an operational amplifier therefor
12/18/1990US4978958 A/D converter
12/18/1990US4978957 High-speed analog-to-digital converter
12/18/1990US4978954 Non-contact type potentiometer employing a triangular wave encoder
12/13/1990WO1990015481A1 Apparatus and method for producing pulse width modulated signals from digital information
12/13/1990DE3905162A1 Analog/digital-wandler mit fensterdetektor und veraenderlichem tastverhaeltnis Analog / digital converter window detector with variable duty cycle and
12/12/1990EP0401353A1 Variable resistors
12/12/1990EP0401245A1 Digital to analogue converter.
12/12/1990CN2067467U Multifunction axial angle coder
12/11/1990US4977402 Nonhysteretic periodic-threshold SQUID comparator and A/D converter
12/05/1990EP0238646B1 Dual slope converter with large apparent integrator swing
12/05/1990EP0235235B1 Analogue-to-digital conversion apparatus
12/04/1990US4975702 CMOS waveform digitizer
12/04/1990US4975701 Exponential gain control for nonlinear analog-to-digital converter
12/04/1990US4975700 Analog-to-digital converter with non-linear error correction
12/04/1990US4975698 For use in an analog-to-digital converter
11/1990
11/29/1990WO1990014717A1 High linearity d/a converter
11/29/1990DE4015099A1 Messwandler Transducers
11/28/1990EP0399968A1 A method and arrangement for avoiding erroneous echoelimination and/or for avoiding erroneous equalization in a telecommunication system
11/28/1990EP0399456A2 D/A converter having improved segment arrangement
11/28/1990EP0399303A2 Non-linear analog to digital converter
11/28/1990EP0399120A2 D/A conversion circuit
11/27/1990US4973979 Circuit and method for converting digital signal into corresponding analog signal
11/27/1990US4973978 Voltage coupling circuit for digital-to-time converter
11/27/1990US4973977 Digital to amplitude modulated analog converter
11/27/1990US4973976 Multiplexing parallel analog-digital converter
11/27/1990US4973975 Initial potential setting circuit for a sample/hold circuit associated with an A/D converter
11/27/1990US4973974 Multi-stage analog-to-digital converting device
11/27/1990US4973962 Signal level detect circuits
11/27/1990US4973959 Digital pulse circuit for processing successive pulses
11/27/1990US4973857 Current divider circuit
11/27/1990CA1276994C Automatic gain control in a digital signal processor
11/24/1990CA2017486A1 Apparatus and method for optical encoding
11/22/1990EP0398638A2 Digital-to-analog converter device
11/22/1990EP0398418A2 High speed analog-to-digital converter
11/22/1990DE3916482A1 PCM signal conversion into pulse width modulated signals - supplying bit-reduced data words to presettable counter data inputs
11/20/1990US4972189 Correction for DC offset in A/D converters
11/20/1990US4972188 Signal processing system
11/20/1990US4972080 Signal processing apparatus for pulse encoder with A/D conversion and clocking
11/15/1990WO1990013949A1 Input stage for flash a/d converter
11/15/1990DE4013701A1 Analog input signal A=D conversion method - determining quantising residue in two steps, first one using subtraction and second forming quantising residue
11/13/1990US4970515 Self-calibrating A/D and D/A converter
11/13/1990US4970514 Calibration method for redundant A/D and D/A converters with a weighted network
11/13/1990US4970513 Device for converting an analog signal into a digital signal of a parallel comparison type with error suppression circuits
11/13/1990US4970511 Method and apparatus for n/(n-x) resolver encoder
11/13/1990CA1276307C Complementary voltage interpolation circuit
11/08/1990DE4019435A1 A=D conversion for analog input signal - determines coarse value with N bit resolution from input signal by subtraction from constant voltages
11/06/1990US4969034 Method of signal enhancement
11/06/1990US4968990 Analog-to-digital converter with all parallel BiCMOS
11/06/1990US4968989 Switched capacitor filter for use with a digital-to-analog (D/A) converter
11/06/1990US4968988 Time interleaved analog-digital converter and a method for driving the same
11/06/1990US4968986 Wide bandwidth analog-to-digital converter and method
11/06/1990CA1276042C Digitally programmable signal generator and method
11/01/1990WO1990013185A1 A method and arrangement for avoiding erroneous echo-elimination and/or equalization in a telecommunication system
11/01/1990WO1990007826A3 Variable resistors
10/1990
10/31/1990EP0395076A2 Speech coding apparatus