Patents
Sitemap › H03 - Basic electronic circuitry › H03M - Coding, decoding or code conversion, in general › H03M 1 - Analogue/digital conversion; Digital/analogue conversion
Patents for H03M 1 - Analogue/digital conversion; Digital/analogue conversion (31,168)
11/1993
11/27/1993CA2096914A1 Analog-digital converter input signal limiting device
11/25/1993DE4215702A1 Capacitive rotary angle encoder - contains interleaved stator and rotor plates with conductive surface coatings, one capacitor for excitation of other coarse and fine track to produce sinusoidal functions over full range of 360 deg..
11/24/1993EP0571075A2 Analog to digital converter with autoranging offset
11/23/1993US5265039 Technique for improving the resolution of an A/D converter
11/23/1993US5264851 A/D converter utilizing a first reference voltage divider and level shifting of a second voltage divider by input signal
11/23/1993US5264849 Optical A/D conversion using asymmetrical-neural-networks
11/18/1993EP0570101A2 Signal processing circuits with digital programmability
11/18/1993EP0570099A2 Apparatus for generating a digital signal output representative of a received analog signal
11/18/1993EP0569989A2 Linear signal reconstruction system and method
11/18/1993EP0569856A2 A/D Converter
11/18/1993DE4216065A1 Microwave signal A=D conversion by Mach-Zehnder modulator-interferometer - offsetting optical carriers by microwave frequency and feeding as electrical signals to comparator, with electric fields in optical waveguides differing by factor of two
11/18/1993DE4216064A1 Optical A=D converter usable at frequencies above 1 GHz - phase-shifts optical signals of coherent laser source after vertical and horizontal polarisation
11/16/1993US5262780 Analog to digital converter with conversion rate inverse to the integration period
11/16/1993US5262779 Analog to digital converter
11/11/1993WO1993022840A1 Analog-to-digital converter and feedback loop using same
11/09/1993US5260769 Position detector
11/09/1993US5260705 Analog-to-digital converter having selectively and independently controllable sampling and conversion periods
11/09/1993CA2010739C Bipolar voltage to frequency converter
11/09/1993CA1324006C Digital transmitter with variable resolution as a function of speed
11/03/1993EP0568199A2 Signal processing circuits with serial chaining
11/03/1993EP0568198A2 Integrated circuit for physiological signal measurement
11/03/1993EP0538252A4 Technique for improving the resolution of an a/d converter in a spectrometer using dither
11/03/1993EP0516741A4 Hybrid analog/digital signal processing
11/02/1993USRE34428 Analog-to-digital converter with offset voltage polarity inversion
11/02/1993US5258761 High resolution charge-redistribution A/D converter
11/02/1993US5258759 Method and apparatus for monotonic algorithmic digital-to-analog and analog-to-digital conversion
11/02/1993US5258758 Digital-to-analog converter
11/02/1993US5258757 Apparatus and method for increasing the output impedance of a current-type digital-to-analog converter
11/02/1993US5258664 Operational amplifier with self contained sample and hold and auto zero
11/02/1993CA2095156A1 Multi-bit dac with dynamic element matching
10/1993
10/28/1993WO1993021499A1 Absolute encoder
10/27/1993EP0567145A2 Method and apparatus for self-tracking multiple analog to digital conversion
10/27/1993EP0566942A2 Method of interfering signal reduction caused by digital signal processors
10/27/1993EP0302553B1 Electric circuit for use in an A/D converter
10/26/1993US5257053 Position detecting device
10/26/1993US5257039 Non-impact printhead and driver circuit for use therewith
10/26/1993US5257027 Modified sign-magnitude DAC and method
10/26/1993US5257026 Method and apparatus for calibrating a multi-bit delta-sigma modular
10/26/1993US5257025 High-speed sampling arrangement and apparatus using same
10/21/1993DE4212621A1 Integrated digital=to=analogue converter on semiconductor substrate - has resistors in parallel, adjacent columns, with several columns forming group and non-adjacent groups connected in series
10/19/1993US5254995 Analog to digital peak detector utilizing a synchronization signal
10/19/1993US5254993 Multiplying digital-to-analog converter
10/14/1993WO1993020346A1 A method for determining the rotational position of a crankshaft of an internal combustion engine
10/14/1993CA2109324A1 A method for determining the rotational position of a crankshaft of an internal combustion engine
10/13/1993EP0564956A1 Digital-to-analog converter distortion compensation
10/12/1993US5252976 Sequential comparison type analog-to-digital converter
10/12/1993US5252975 Digital-to-analog converter having resistor networks
10/12/1993US5252973 Apparatus for digital-to-analogue conversion
10/12/1993US5252972 Codec having controllable frame synchronizing and clocking signals
10/12/1993US5252968 Apparatus and method for optical encoding and cursor control trackball
10/12/1993US5252825 Absolute encoder using interpolation to obtain high resolution
10/12/1993US5252824 Analog transmitter of position and direction of rotation having a signal amplitude varies on each change of state of sensors
10/12/1993CA1323104C Digital to amplitude modulated analog converter
10/07/1993DE4233410C1 Digital=to=analogue conversion method using microprocessor - inserting additional fine pulses of shorter duration between original coarse pulses in each pulse sequence period
10/06/1993EP0564143A2 Multi-mode analog to digital converter and method
10/06/1993EP0564142A2 Multi-mode digital converter and method
10/06/1993EP0564071A1 Reference voltage source
10/06/1993EP0563155A1 Digital-to-analogue conversion
10/05/1993US5251012 Electro-optical scanner
10/05/1993US5250948 High level resolution enhancement for dual-range A/D conversion
09/1993
09/30/1993WO1993019535A1 Reference generator
09/30/1993WO1993019534A1 High resolution charge-redistribution a/d converter
09/30/1993WO1993019533A1 Averaging flash analog-to-digital converter
09/30/1993DE4307578A1 Integrated semiconductor resistor ladder for A=D or D=A converter - has pair of serially connected MOS-transistors having common contact port connected in parallel across each resistor
09/30/1993DE4306634A1 Position measurement device e.g. for magnetic linear or rotary encoder - has magnetic scale, movable detector with magnetoresistive sensor arranged at angle to scale
09/29/1993EP0562564A2 Analog-to-digital converter with capacitor network
09/29/1993EP0562392A1 Position-sensing and motion verification assembly for a motor-driven mechanism
09/28/1993US5249169 Apparatus for reproducing information
09/28/1993US5248974 Dielectric relaxation correction circuit for charge-redistribution a/d converters
09/28/1993US5248973 High-speed, high-resolution analog to digital converter subranging architecture
09/28/1993US5248970 Offset calibration of a dac using a calibrated adc
09/28/1993CA1322575C Frequency output generator
09/23/1993DE4304898A1 Differential amplifier, comparator, and high speed A/D converter - has two constant current sources for specified currents, and current rise control responding to analog signal
09/22/1993EP0561416A2 Rotary and linear-position sensor arrangement for a movable device part
09/22/1993EP0561331A2 Analog-to-digital converting circuit
09/21/1993US5247680 Apparatus for digitizing the setting of a potentiometer
09/21/1993US5247301 Analog-to-digital conversion method and apparatus with a controlled switch for high-speed conversion
09/21/1993US5247299 Successive approximation A/D converter correcting for charge injection offset
09/21/1993US5247298 Self-latching analog-to-digital converter using resonant tunneling diodes
09/16/1993WO1993018588A1 Incremental-decremental counter
09/16/1993DE4208257A1 Processing of periodic input signals of fibre ring photodetector - sampling signal, averaging, storing, reading out at lower frequency and digitising
09/16/1993DE4207421A1 Optoelectronic absolute or incremental angle sensor - has vernier spiral encoding and digitally addressable area or line sensor
09/14/1993US5245593 Clock producing apparatus for a pwm system digital to analog converter
09/14/1993US5245344 High order switched-capacitor filter with dac input
09/14/1993US5245342 Analog to digital converter incorporating summing currents responsive to a digital output thereof
09/14/1993US5245341 Video analog-to-digital converter
09/14/1993US5245340 Digital transmultiplexer with automatic threshold controller
09/14/1993US5245223 CMOS latching comparator
09/09/1993DE4306646A1 Electronic tracking A=D converter - has summation point coupled to converter input via two resistors with inverting amplifier between them
09/09/1993DE4305046A1 A=D converter for monitored parameters in IC engine control system - has different groups of registers corresponding to different switching factors selected via control circuit depending on entered switching factor
09/09/1993DE4207324A1 Bearing for contactless rotational speed measurement - has magnetic screening material at regular intervals around inner or outer ball race, cooperating with magnetic sensor
09/08/1993EP0559348A2 Rate control loop processor for perceptual encoder/decoder
09/08/1993EP0559123A2 Codec
09/07/1993US5243347 Monotonic current/resistor digital-to-analog converter and method of operation
09/07/1993US5243346 Digital-to-analog converting device using decoders and parallel-to-serial converters
09/07/1993US5243344 Digital-to-analog converter--preamplifier apparatus
09/07/1993US5243343 Signal acquisition system utilizing ultra-wide time range time base
09/07/1993US5243307 Act device having optical control of saw velocity
09/07/1993US5243303 Pseudo-random noise signal generator
09/07/1993US5243227 Fine/coarse wired-or tapped delay line
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