Patents
Patents for H03M 1 - Analogue/digital conversion; Digital/analogue conversion (31,168)
05/1998
05/12/1998US5751236 A/D conversion with folding and interpolation
05/12/1998US5751234 Sure chip
05/12/1998US5751230 Digital input and control device
05/12/1998US5751141 IDDQ -testing of bias generator circuit
05/07/1998DE19652325C1 Integrated semiconductor circuit with redundant capacitors
05/06/1998EP0840452A1 Voltage comparator including at least an insulated gate MOS transistor and analogic/digital converters using the same
05/06/1998EP0840096A1 Interpolation circuit for encoder
05/06/1998CN1180962A Digital-to-analog conversion apparatus
05/05/1998US5748984 Ad converting apparatus including holding means indicating whether or not data after AD conversion has been previously used
05/05/1998US5748134 Method and apparatus for converting an analog signal into digital format
05/05/1998US5748133 Analog to digital converter
05/05/1998US5748132 Interpolation type A/D converter
05/05/1998US5748131 A/D converting circuit
05/05/1998US5748130 Analog to digital converter having multi-state output
05/05/1998US5748129 Analog to digital converter circuit
05/05/1998US5748128 Reduced current quadratic digital/analog converter with improved settling-time
05/05/1998US5748127 Two cascoded transistor chains biasing DAC current cells
05/05/1998US5748126 Sigma-delta digital-to-analog conversion system and process through reconstruction and resampling
05/05/1998US5748111 Apparatus for monitoring the speed and axial position of a rotating member
05/05/1998US5747797 Rotation information detecting apparatus and scale for use in the same
04/1998
04/29/1998EP0838904A1 Analogue to digital conversion device with programmable transfer characteristic
04/29/1998EP0838903A1 Conversion of an analog signal into a digital signal, in particular a tv video signal
04/29/1998EP0838902A1 DC level clamp device
04/29/1998EP0838901A1 Analogue to digital conversion device with regulated input dynamic range
04/29/1998CN1180470A Improvement in or relating to loudspeakers
04/29/1998CN1038208C Constant dc potential digital-analog converter for synthesizing tones
04/28/1998US5745871 Pitch period estimation for use with audio coders
04/28/1998US5745394 High speed analog to digital converter, decimation and storage system
04/28/1998US5745067 Two stage analoge-to-digital converter having unique fine encoding circuitry
04/28/1998US5745066 AD converter and magnetic recording/regenerating apparatus using thereof
04/28/1998US5745065 Level-shift type digital to analog converter
04/28/1998US5745064 D/A conversion device having multiple D/A converters with substantially equal voltages supplied thereto
04/28/1998US5745062 Pulse width modulation analog to digital converter
04/28/1998US5745061 Method of improving the stability of a sigma-delta modulator employing dither
04/28/1998US5744985 Differential sample-hold circuit
04/23/1998WO1998017004A1 Digital-to-analog converter with dual resistor string
04/23/1998WO1998017003A2 Testing control signals in a/d converters
04/23/1998WO1998017002A1 Unit and method for encoding photodetector signal, with correction of input level, and use of such a unit for a gamma-camera
04/23/1998WO1998000921A3 Apparatus and method for processing signals obtained from a position encoder
04/22/1998EP0837563A2 Parallel charge signal delivery system, and filtering AD converter using the same
04/22/1998EP0837446A1 Matrix substrate with column driver for use in liquid crystal display
04/22/1998EP0836768A1 Monolithic analog-to-digital converter
04/22/1998EP0673576A4 Apparatus for and method of speech digitizing.
04/22/1998CN1179650A Analog-to-digital conversion apparatus
04/21/1998US5742249 System using a digital timer for a joystick potentiometer readout
04/21/1998US5742248 Differential amplifier with signal-dependent offset, and multi-step dual-residue analog-to-digital converter including such a differential amplifier
04/21/1998US5742245 Digital-to-analog converter circuit using current mirror circuit for conversion of law-order bits
04/16/1998WO1998016014A1 Data compression and expansion of an audio signal
04/15/1998EP0835556A2 Method and apparatus for multiplexed oversampled analog to digital modulation
04/15/1998EP0712549A4 Data-directed scrambler for multi-bit noise-shaping d/a converters
04/15/1998CN1179243A Wide dynamic range analog to digital conversion
04/14/1998US5740096 Filter circuit for communication
04/14/1998US5740064 Sampling technique for waveform measuring instruments
04/14/1998US5739805 Matrix addressed LCD display having LCD age indication, and autocalibrated amplification driver, and a cascaded column driver with capacitor-DAC operating on split groups of data bits
04/14/1998US5739782 Resistance ladder, D/A converter and A/D converter
04/14/1998US5739781 Sub-ranging analog-to-digital converter with open-loop differential amplifiers
04/14/1998US5739780 Digital to analog converter and dynamic current mirror structure to simplify on-chip wave shaping
04/14/1998US5739775 Digital input and control device
04/09/1998WO1998015062A1 Circuit for binary evaluation of an analogue voltage signal
04/09/1998DE19738129A1 Microprocessor with A/D converter for controlling battery charging device
04/09/1998DE19640937A1 Verfahren und Vorrichtung zur Überwachung der Meßwerterfassung bei einer Motorsteuerung Method and apparatus for monitoring the measurement value in an engine control
04/09/1998DE19640600A1 Vorrichtung zur binären Auswertung eines analogen Spannungssignals An apparatus for evaluating a binary analog voltage signal
04/08/1998EP0834990A1 Digital programmable phase shifter and analog-digital converter using such a phase shifter
04/08/1998EP0834220A1 High speed, low power cmos d/a converter for wave synthesis in network
04/08/1998EP0834217A1 Process for controlling the power of the transmission amplifier of radio equipment
04/08/1998EP0834170A1 Column driver for a display
04/08/1998EP0834056A1 Absolute encoder
04/08/1998EP0738439B1 Low resolution, high linearity digital-to-analog converter without trim
04/08/1998CN1178614A Potential generating device
04/07/1998US5736953 For sampling-and-holding an analog input signal
04/07/1998US5736952 Current boost for differential flash analog to digital converter driver
04/07/1998US5736951 High speed and high accuracy A/D converter
04/07/1998US5736949 Multiplexed analog-to-digital converter for relative and absolute voltage measurements
04/07/1998US5736948 Semiconductor integrated circuit device and control system
04/07/1998US5736886 Input clamping method and apparatus with a correlated double-sampling circuit
04/07/1998US5736878 Low cost, high speed track and hold circuit
04/07/1998US5736757 Charge-domain generation and replication devices
04/02/1998WO1998013669A1 Rotational angle sensor using a ccd line with enhanced measuring precision
04/02/1998DE19639501A1 Door or window motorised vane
04/01/1998EP0833454A1 Charge digital-analog converter using insulated gate MOS transistors
04/01/1998EP0833453A1 Current digital-analog converter using insulated gate MOS transistors
04/01/1998EP0833130A2 Position measuring system and method
04/01/1998EP0832521A1 Process for encoding an audio signal digitalised at a low sampling frequency
04/01/1998EP0832518A1 Dac having separate main and correcting outputs
04/01/1998EP0832517A2 Hybrid analog-to-digital converter for low power applications, such as use in an implantable medical device
03/1998
03/31/1998US5734688 Interpolation pulse generating device with two-step interpolation
03/31/1998US5734342 Analog-to-digital converter for generating a digital N-bit Gray code
03/31/1998US5734266 Two piece measurement representation with magnetic elements magnetized with the same orientation
03/26/1998DE19638912A1 Position sensor arrangement for rotation angle sensor in motor vehicle
03/26/1998DE19638911A1 Rotation angle sensor for motor vehicle
03/25/1998EP0831592A1 Chopper comparator showing high speed and low power operations free of malfunction under variation of logical threshold voltage of invertor
03/24/1998US5731776 Analog-to-digital converter
03/24/1998US5731775 Subranging converter with plurality of resistor strings and transistor switches
03/24/1998US5731774 Digital-to-analog converter
03/24/1998US5731773 Half-order hold direct digital frequency synthesis
03/24/1998US5731772 Method and apparatus for compensation for a DC voltage offset of a digital to analog converter
03/24/1998US5731771 Circuit for locking a signal to a reference value
03/24/1998US5731769 Multi-rate digital filter apparatus and method for sigma-delta conversion processes
03/24/1998US5731730 Zero level setting circuit for A/D converter in a magnetic disk drive
03/24/1998US5731702 High accuracy angle based rotation sensor with time based back up