Patents
Patents for H03M 1 - Analogue/digital conversion; Digital/analogue conversion (31,168)
09/1998
09/23/1998EP0866561A1 Analogue/digital converter with a calibration arrangement
09/23/1998EP0866548A1 Differential integrating amplifier with switched capacitor circuit for precision input resistors
09/23/1998EP0865685A1 Data compression and expansion of an audio signal
09/22/1998US5812831 Method and apparatus for pulse width modulation
09/22/1998US5812626 For measuring a pulse spacing of a pulse signal
09/22/1998US5812079 Subranging type A/D converter apparatus equipped with feedback line for transmitting control signal for A/D conversion
09/22/1998US5812077 Circuit for A/D conversion of a video RF or IF signal
09/17/1998DE19744057A1 D=A converter circuit with current output
09/17/1998DE19710558A1 Auswertung eines Puls-Weiten-Modulations-Signals Evaluation of a pulse-width modulation signal
09/16/1998EP0865158A2 Sampling frequency conversion apparatus and fractional frequency dividing apparatus for sampling frequency conversion
09/16/1998EP0864204A1 Integrated drivers for flat panel displays employing chalcogenide logic elements
09/16/1998CN1193223A Digital/analog converting circuit
09/16/1998CN1193222A Digital-analog converting method
09/15/1998US5808923 Denormalization device and method for multichannel audio decoder
09/15/1998US5808576 Resistor string digital-to-analog converter
09/15/1998US5808575 Gain varying device capable of varying each gain of analog and digital signals
09/15/1998US5808574 Systems for achieving enhanced frequency resolution
09/15/1998US5808573 Methods and structure for sampled-data timing recovery with reduced complexity and latency
09/15/1998US5808489 High speed A/D converter and slew controlled pulse detector
09/11/1998WO1998039897A1 Internet and intranet phone system
09/11/1998WO1998039624A1 Voltage divider providing switchable resolution
09/09/1998EP0863384A1 Circuit and method for the operation of a position sensor using Hall elements
09/09/1998EP0862728A1 Rotational angle sensor using a ccd line with enhanced measuring precision
09/09/1998EP0769224B1 Process for the analog/digital conversion of an electric signal and device for implementing it
09/09/1998EP0579838B1 Solid-state imaging device and solid-state imaging element used therefor
09/09/1998CN1192612A Digital/analgue converter
09/09/1998CN1192609A Re-sampling circuit and associated method
09/08/1998US5806024 Coding of a speech or music signal with quantization of harmonics components specifically and then residue components
09/08/1998US5805097 Current-integrating successive-approximation analog-to-digital converter
09/08/1998US5805096 A/D converter with interpolation
09/08/1998US5805095 Two's complement digital to analog converter
09/08/1998US5805094 For conversion of a signal transmitted serially by process apparatus
09/08/1998US5805091 Reference voltage circuit
09/08/1998US5805090 Displacement amount detection method and apparatus
09/03/1998WO1998038745A1 A method of and a device for analog signal sampling
09/03/1998DE19738561A1 Integrated circuit command method for analogue digital converters
09/02/1998EP0862274A1 A method of and a device for analog signal sampling
09/02/1998CN1192088A Analog-to-digital converter controlling method
09/01/1998US5801657 Serial analog-to-digital converter using successive comparisons
09/01/1998US5801656 Digital-to-analog converter using a CCD having charge source regions corresponding to digital data
09/01/1998US5801655 Multi-channel D/A converter utilizing a coarse D/A converter and a fine D/A converter
09/01/1998US5801654 Apparatus and method for frequency translation in a communication device
09/01/1998US5801653 Current cell of a digital-to-analog converter
09/01/1998US5801652 Digital signal processor for processing digital data
08/1998
08/27/1998WO1998037391A1 Process control transmitter with adaptive analog-to-digital converter
08/27/1998WO1998024187A3 Analog-to-digital conversion
08/27/1998DE19705406A1 A=D conversion method with self-test function
08/27/1998CA2282536A1 Process control transmitter with adaptive analog-to-digital converter
08/26/1998EP0860950A2 Digital-to-analog data converter with internal reference and method of operation thereof
08/26/1998EP0566942B1 Method of interfering signal reduction caused by digital signal processors
08/26/1998CN1191419A Reference level mobile D/A converter
08/26/1998CN1191418A Method for testing charge redistribution D/A converter and A/D converter
08/26/1998CN1191417A A/D conversion apparatus
08/25/1998US5798959 Method and device for soft-driving an array of logic gates and suppression of switching distortion
08/25/1998US5798725 Comparator for an analog to digital converter
08/25/1998US5798724 Interpolating digital to analog converter architecture for improved spurious signal suppression
08/25/1998US5798723 Accurate and precise current matching for low voltage CMOS digital to analog converters
08/25/1998US5798722 UHF digital to analog converter for cryogenic radar system
08/18/1998US5796851 Digital method to eliminate power-on pops and clicks
08/18/1998US5796361 CCD signal digitizing integrated circuit
08/18/1998US5796358 Methods and structure for combined analog and digital automatic gain control in sampled-data receivers
08/18/1998US5796357 Digital angle detecting method
08/13/1998WO1998035386A1 Radio architecture
08/12/1998EP0858170A2 System for preventing distortion in an analog-to-digital converter
08/12/1998EP0858163A2 Pulse width modulation operation circuit
08/12/1998EP0858162A2 Pulse modulation operation circuit
08/12/1998EP0858159A2 Band synthesis and band splitting filter bank encoder and decoder, encoding and decoding method
08/11/1998US5793817 DC offset reduction in a transmitter
08/11/1998US5793322 Successive approximation analog-to-digital converter using balanced charge integrating amplifiers
08/11/1998US5793321 A/D converting circuit with quantizers and inverted amplifiers
08/11/1998US5793320 Digital data level control circuit
08/11/1998US5793319 Analog to digital linearizing apparatus, system and method
08/11/1998US5793318 System for preventing of crosstalk between a raw digital output signal and an analog input signal in an analog-to-digital converter
08/11/1998US5793231 Current memory cell having bipolar transistor configured as a current source and using field effect transistor (FET) for current trimming
08/11/1998US5793202 Position sensor, employing electromagnetic induction
08/06/1998WO1998027656A3 Digital-to-analog conversion
08/06/1998WO1998027655A3 Pipeline analog-to-digital conversion
08/05/1998EP0856947A2 A/D conversion apparatus
08/04/1998US5790064 Apparatus and method for switching capacitors within a switched capacitor circuit at times selected to avoid data dependent loading upon reference voltage supplies
08/04/1998US5790061 Adaptive A/D converting device for adaptively converting and input analog signal into an output digital signal having a constant quantizing error
08/04/1998US5790060 Digital-to-analog converter having enhanced current steering and associated method
07/1998
07/30/1998WO1998033166A1 Method for inspecting active matrix board, active matrix board, liquid crystal device and electronic equipment
07/30/1998WO1998027654A3 Cyclic analog-to-digital conversion
07/30/1998DE19702293A1 Apparatus for linearising analog to digital converter esp. for heat meter
07/29/1998CN1189216A Circuit for detecting level or level variation of input direct voltage
07/28/1998US5787119 Transmission system for digitized voice signals and coder/decoder circuit for such a system
07/28/1998US5786783 Analog-to-digital converter having signal pipeline and reference pipelines
07/28/1998US5786782 For digital signal processing of two analog input signals
07/28/1998US5786593 Rotary encoder having a plurality of patterns with different cycles
07/22/1998EP0854580A2 Digital to analogue converter
07/22/1998EP0719478B1 Digital to analog conversion using nonuniform sample rates
07/22/1998CN1188348A Digital/analog converter
07/22/1998CN1039273C Decoding communication telephone
07/21/1998US5784601 Data processor capable of changing sampling time and clock frequency
07/21/1998US5784020 Analog-to-digital converting device for increasing the number of analog input channels
07/21/1998US5784019 Digital to analog converter for generating distributive analog control signals utilizing digital signal generator and control signal generator
07/21/1998US5784017 Analogue and digital convertors using pulse edge modulators with non-linearity error correction
07/21/1998US5784016 Self-calibration technique for pipe line A/D converters
07/21/1998US5783957 Differential amplifier circuit, CMOS inverter, demodulator circuit for pulse-width modulation, and sampling circuit
07/21/1998US5783925 Method of interpolating output from sensor