Patents
Patents for H03M 1 - Analogue/digital conversion; Digital/analogue conversion (31,168)
09/1993
09/03/1993CA2090654A1 Programmable timing circuit for integrated circuit device with test access port
09/02/1993WO1993017502A1 Analog-to-digital converter with conversion rate inverse to the integration period
09/01/1993EP0558243A2 Digital to analog converter with precise linear output for both positive and negative digital input values
08/1993
08/31/1993US5241334 Electronically controlled camera having mode changing capability
08/31/1993US5241312 High resolution analog to digital converter
08/25/1993EP0557052A2 Analog to digital converter
08/24/1993US5239558 Pulse code modulation circuit
08/24/1993US5239506 Latch and data out driver for memory arrays
08/24/1993US5239423 Method and apparatus for recovering digital signals from recorded reproductions of digital signals
08/24/1993US5239299 Digital equalization of time interleaved analog to digital converters
08/24/1993US5239297 Position-encoded screw and method and system for calibrating a position-encoded screw
08/24/1993US5239210 Low distortion unity gain amplifier for dac
08/19/1993WO1993016354A1 Angle of rotation sensor for the absolute measurement of the angle of rotation over several revolutions
08/19/1993DE4200935C1 Single power supply for multiple micro controlled A=D converters - has isolating switch stages coupled to output of DC=DC converter for connection to multiple A=D converters and amplifiers
08/18/1993EP0555985A1 Dual ranked time interval conversion circuit
08/18/1993EP0247184B1 Displacement measuring apparatus
08/17/1993US5237391 Multitrack multilevel sensing system
08/17/1993US5237326 Flash type analog-to-digital converter having MOS comparators
08/17/1993US5237324 System and method for producing baseband analog modulation signals
08/17/1993CA2010738C Fast settling voltage to frequency converter for high speed analog to digital conversion
08/12/1993DE4303235A1 Sensor for absolute rotational angle measurement over several revolutions - has resolver as fine angle sensor element connected to rotating shaft to be monitored and coarse angle sensor elements each inductively coupled across reduction drive
08/11/1993EP0554973A2 Multi-channel trigger dejitter
08/11/1993EP0554265A1 Two-step analog-to-digital converter.
08/10/1993US5235374 Electronically controlled camera having macro and normal operational modes
08/10/1993US5235335 Circuit and method for tuning capacitor arrays
08/10/1993US5235333 Hysteresis-insensitive single-comparator successive approximation analog-to-digital converter
08/10/1993US5235218 Switching constant current source circuit
08/05/1993WO1993015556A1 An analog-to-digital converting arrangement
08/05/1993WO1993009599A3 Analog-to-digital converter and method of fabrication
08/05/1993DE4302057A1 Digitisation of band-limited analogue signal for hearing aid - using amplifier with adjustable gain controlled by comparator fed from A=D converter, which stores scale unit
08/05/1993DE4202901A1 Optical absolute angle encoder - has multiple track code, e.g. Gray code, adjacent to analogue code, and photocell array sensing both scales
08/04/1993EP0553090A1 A/d or d/a converter, a/d and d/a converter system and a calibration method thereof.
08/03/1993US5233660 Method and apparatus for low-delay celp speech coding and decoding
08/03/1993US5233637 System for generating an analog regulating voltage
07/1993
07/27/1993US5231669 Low bit rate voice coding method and device
07/27/1993US5231399 Differential quantizer reference resistor ladder for use with an analog-to-digital converter
07/27/1993US5231398 Method and apparatus for self-tracking multiple analog to digital conversion
07/27/1993US5231397 Extreme waveform coding
07/27/1993US5231396 R-2R digital-to-analog converter having transistors of equal emitter size
07/27/1993US5231351 Magnetoresistive speed sensor processing circuit utilizing a symmetrical hysteresis signal
07/27/1993US5231314 Programmable timing circuit for integrated circuit device with test access port
07/22/1993WO1993014602A1 Solid-state imaging device and solid-state imaging element used therefor
07/22/1993DE4215701C1 Capacitive angle encoder - contains correction capacitor set up to correct for reproducible, angle dependent errors before sealing housing
07/21/1993EP0551585A2 Rotary encoder
07/21/1993EP0551503A1 Integrating ad converter with means for reducing "rollover error"
07/20/1993US5229772 Ratiometric ADC with pulse width modulated output for wide temperature range applications
07/20/1993US5229771 Analog to digital converter for converting multiple analog input signals to corresponding digital output signals during one conversion cycle
07/20/1993US5229770 Analog/digital converter with advanced conversion termination notice
07/20/1993CA1320583C Error limiting analog to digital converter
07/14/1993EP0550990A2 Combined and simplified multiplexing with dithered analog to digital converter
07/14/1993EP0550942A1 Signal processor for sampling rate conversion
07/14/1993EP0550794A2 Rotation encoder with absolute value position detection
07/14/1993CN1074317A Analog-to-digital converter circuit having automatic range control
07/13/1993US5227987 Digital signal processor for executing multichannel processing of analog inputs and outputs
07/13/1993US5227794 Frequency multiplexed analog-digital conversion
07/13/1993US5227793 Current mode digital-to-analog converter using complementary devices
07/13/1993US5227792 Superconducting analog-to-digital converter with a triple-junction reversible flip-flop bidirectional counter
07/13/1993US5227791 East high-bit one step electronic analog-to-digital converter
07/13/1993US5227787 Digital data converting system
07/07/1993EP0550187A2 Analog to digital converter calibration system and method of operation
07/06/1993US5225837 A/D converter
07/06/1993US5225835 Sigma delta type digital/analog converter system
07/06/1993US5225834 Semiconductor integrated circuit boundary scan test with multiplexed node selection
07/06/1993US5225830 Combination optical and capacitive absolute position apparatus and method
07/06/1993US5225784 DC Current comparator circuit for generating an adjustable output proportional to an input signal
07/01/1993DE4241702A1 Analogue=to=digital converter for electric motor speed control - counts clock pulses produced during period of PWM signal obtd. from error comparison with triangular wave
06/1993
06/29/1993USRE34295 Signal processing circuit
06/29/1993US5223864 Phoropter
06/29/1993US5223836 Subranging analog-to-digital converter with priority weighted correction for the m.s.b. group
06/29/1993US5223834 Analog-to-digital converter
06/23/1993EP0274509B1 Linear measuring devices
06/23/1993CN1021393C Linearity control circuit for digital to analog converter
06/22/1993US5221926 Circuit and method for cancelling nonlinearity error associated with component value mismatches in a data converter
06/22/1993US5221890 Reference generator
06/22/1993CA1319434C Fast high-resolution analog-to-digital converter
06/15/1993US5220589 Correction circuit for a floating-point amplifier
06/15/1993US5220282 Circuit arrangement for improving resolution of a sensor for determining angular position of a rotating member
06/15/1993US5220275 Accumulator phase digitizer
06/15/1993US5220161 Position-sensing and motion verification assembly for a motor-driven mechanism
06/15/1993CA2001862C Signal conversion apparatus which reduces quantization errors for telecommunications applications
06/10/1993WO1993011442A1 Method for optimizing error corrections for binary logic components
06/09/1993EP0545546A2 Digital GMSK transceiver
06/09/1993EP0545295A2 Low noise switched capacitor digital-to-analog converter
06/09/1993EP0545254A2 Analog-to-digital converter circuit having automatic range control
06/09/1993CN1073062A Mixed signal processing system and method for powering same
06/08/1993US5218364 D/a converter with variable biasing resistor
06/08/1993US5218363 High-speed switching tree with input sampling pulses of constant frequency and means for varying the effective sampling rate
06/08/1993US5218362 Multistep analog-to-digital converter with embedded correction data memory for trimming resistor ladders
06/03/1993DE4238265A1 Dual slope type analogue=to=digital converter - has digital processor for matching measuring interval to rate of change of conversion result
06/03/1993DE4229610A1 Absolute position sensor for multi-turn angular detection - has shaft located rotatably in stator for determining exact angular position of transmitter during complete revolution and includes buffer battery
06/03/1993DE4138936A1 Reducing effect of quantising noise for digital analog signal transmission etc. - applying auxiliary signal as sine signal not affecting analog signal prior to digitising
06/01/1993US5216626 Position measuring apparatus and method having reduced memory requirements
06/01/1993US5216426 Integrating adc having memory capacitor connected to integrator output and one comparator input and voltage divider connected to integrator output and the other comparator input
06/01/1993US5216425 Method for reducing the influence of distortion products
06/01/1993US5216245 Multi-color optical shaft position sensor
05/1993
05/27/1993WO1993010596A1 Digital demodulator
05/26/1993EP0543730A1 Neural analogue-digital converter
05/26/1993EP0543507A2 Circuits and method for the analog-to-digital converter of magnetic flux
05/26/1993EP0543220A1 Method and apparatus for A/D and D/A conversion
05/26/1993CN1021003C Variable duty cycle window detecting analog to digital converter