Matches 251 - 300 out of 464 < 1 2 3 4 5 6 7 8 9 10 >
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5389926 Microcomputer having test circuit for A/D converter  
Disclosed herein is a microcomputer having a test circuit for an A/D converter of a C/R type. This converter includes a resistor circuit having a plurality of resistors connected in series between...
5359327 A/D converter system with interface and passive voltage reference source  
An A/D circuit to convert an analog signal to a digital signal. The circuit includes a low noise analog-to-digital conversion chip and a precision voltage reference source. The voltage reference...
5349351 Analog-digital converting device  
An analog-digital converting device is designed such that when an operation of converting a special analog signal into a digital signal and an operation of converting another analog signal into a...
5341137 Analog to digital converter using parallel folder and decoder circuits  
An analog to digital converter includes first and second folder circuits that map an analog input voltage into first and second folder output voltages, using two different voltage transfer...
5331324 A/D converter  
To accept a plurality of starting factors without the use of a CPU and improve the real-time processing speed of A/D conversion, the same number of channel selection registers, mode registers and...
5327132 Composite signal generation and decoding in digital signal processing automotive audio system  
A digital signal processing automotive audio system uses an analog audio source providing stereo output signals. One of the stereo signals is mixed to a distinct frequency band and summed with the...
5321404 Ripsaw analog-to-digital converter and method  
An analog-to-digital converter (ADC) generates multiple analog waveforms, preferably as voltage ramps, that progressively increase in signal value over time but at different rates of increase. The...
5319372 Analog to digital converter that decodes MSBS from internal voltages of two folder circuits  
An N-bit analog to digital converter (ADC) generates an output code having J most significant bits (MSBs) and K least significant bits (LSBs). First and second folder circuits map an analog input...
5298902 Analog-to-digital converter employing multiple parallel switching capacitor circuits  
A multi-channel analog-to-digital converter includes a counter (20) and a plurality of analog-to-digital conversion cells (10), each of which contain incremental discharge means (11-16) that store...
5294927 Multi-channel digital to analog converter  
A digital to analog converter employs an operational amplifier as an active summing device for summing a first analog voltage corresponding to most significant bits of a digital value and a second...
5294929 Control system for peripheral devices  
In a control system for peripheral devices, by operating only one device for digital-to-analogue conversion, the specific output switching corresponding to that specific device for...
5293167 Automatic A/D converter operation with selectable result format  
An analog-to-digital conversion system and method provide selectable data formats for each converted digital result value. Each digital result is stored in a register or table word. Information...
5291197 One-chip data processor with built-in A/D converter for automatically repeating A/D conversions without instructions from a CPU  
A data processing unit according to the present invention has a central processing unit, and an analog-to-digital converter circuit associated with a plurality of input nodes respectively supplied...
5287108 Multistep analog-to-digital converter with successive approximation register circuit for least significant bit resolution  
An analog-to-digital converter (ADC) has at least one resistance ladder circuit for generating a stepped series of reference voltages and set of comparator circuits for comparing an input voltage,...
5270715 Multichannel D/A converter  
There are provided 2 n -number of data latches (2), 2 n -number of dynamic range setting latches (7) and 2 n -number of output dynamic range change circuits (8) in correspondence to 2 n -number...
5252974 Encoder with error correction particularly for flash analog-to-digital converters  
The encoder is particularly for high speed and high resolution flash analog-to-digital converters. The number of components is drastically reduced, error correction scheme extended, the conversion...
5250948 High level resolution enhancement for dual-range A/D conversion  
A dual range A/D converter includes means for appending a predetermined number N of random noise bits to the N least significant bits of the digital signals output from one of the dual A/D...
5247300 Automatic audio/video signal combination apparatus  
An audio/video signal combination apparatus for a digital audio tape recorder, is capable of combining 10 bit audio signal with 5 bit video signal by an automatic addressing, comprising...
5239299 Digital equalization of time interleaved analog to digital converters  
An equalization method is provided for compensating for variations in the characteristics of individual analog-to-digital converters found in a time interleaved analog-to-digital converter circuit....
5235334 Digital-to-analog converter with a linear interpolator  
A digital-to-analog converter (20) includes a linear interpolator (24) and a converter (25, 26) such as a sigma-delta modulator (25) and an associated analog summing network (26). The linear...
5227794 Frequency multiplexed analog-digital conversion  
A single analog-digital converter (either analog-to-digital or digital-to-analog) is employed to simultaneously digitize both an AC information signal and a low frequency or DC control signal. The...
5212484 Digital to analog converter system employing plural digital to analog converters which is insensitive to resistance variations  
A digital to analog conversion system includes two digital to analog converters, a selector circuit and a control circuit. Each digital to analog converter generates an output signal having a...
5212483 Multiplexing A/D converter having sweep interrupt function  
An A/D converter comprising a plurality of inputs, an input selection array to select one of the input signals, an A/D circuit providing a digital output and a conversion completion signal, a...
5210707 Signal mixing apparatus for processing parallel digital data on a time shared basis using analog addition  
A signal mixing apparatus utilizing digital signal processing technology for mixing digital signals comprising parallel data of plural channels include an analog addition circuit for adding, in...
5202686 Infrared Fourier transformation spectometer with plural analog-to-digital converters and interleaved amplification factors  
An infrared Fourier transformation spectrometer comprising a non-linear analog-to-digital converter device having at least one amplifier and one sample and hold circuit connected downstream...
5192950 Partial word to full word parallel data shifter  
A partial word to full word parallel data shifter comprises 2N-1 multiplexer for selectively receiving data from the incoming current data word of width up to N, or from remainder bits of...
5172116 A/D conversion apparatus  
An A/D conversion apparatus includes an analog input selecting device, and A/D converter and an operation control device. The operation control unit issues an input terminal designating signal to...
5168276 Automatic A/D converter operation using a programmable control table  
An analog-to-digital conversion module and method minimize software involvement by providing a programmable control table comprising a plurality of conversion command words (CCW's). Each CCW...
5166686 Variable length block coding with changing characteristics of input samples  
In a communications system, input digital samples are continuously stored into a buffer and successively divided into a group of blocks of different lengths. The samples of each of the blocks are...
5166685 Automatic selection of external multiplexer channels by an A/D converter integrated circuit  
An analog-to-digital conversion system module comprises a pin-limited A/D converter integrated circuit (I.C.) to which at least one multiplexer I.C. may be coupled and sampled. In one embodiment,...
5155488 D/A conversion circuit  
A D/A conversion circuit is provided in which the polarities of a series of input digital data are reversed with every other data block, and the original digital data and the reversed digital data...
5138317 Digital to analogue converter adapted to select input sources based on a preselected algorithm once per cycle of a sampling signal  
An n-bit DAC of the kind having at least 2 n -1 sources, typically current sources, especially for use in oversampling ADC's enables a resolution accuracy in excess of 18 bits by selecting the...
5138319 Two stage A/D converter utilizing dual multiplexed converters with a common converter  
A converter including an even and an odd digital-to-analog converter for converting digital signals from a successive approximation circuit and controlling the odd and even converters and the...
5124707 Analog-to-digital converter utilizing band pass and band stop filtering  
An adaptive analogue-to-digital converter arrangement comprises an analogue-to-digital converter (21) preceded by a variable-gain amplifier (4). In order to provide an accurate measure of the...
5111203 Circuitry for conditioning analog signals and converting to digital form  
A circuit for converting input analog signals to output digital signals including an analog-to-digital converter having an analog input, an offset input and a digital output that represents the...
5103227 Modulus converter for fractional rate encoding  
Fractional rate modulation conversion is accomplished by separating incoming data into frames of bits. Each frame is partitioned into bit words of unequal bit lengths. The words are divided by a...
5081454 Automatic A/D converter operation using programmable sample time  
An analog-to-digital conversion system module and method provides programmable times for sampling analog input signals. Software involvement is minimized by providing a command word which includes...
5061926 AD converter using successive comparison  
A successive comparison type analog-to-digital (AD) converter having a successive comparing circuit which is implemented by two successive comparators, and having a parallel two sequence AD...
5059977 Synchronizing switch arrangement for a digital-to-analog converter to reduce in-band switching transients  
A digital-to-analog converter receives a stream of input words and selectively couples a plurality of current sources to produce a DAC output signal. The DAC includes a set of series-connected...
5003310 Analog data acquisition circuit with digital logic control  
A data acquisition for use in a high-speed data bus interface is provided with an analog acquisition circuit having analog inputs, digital outputs, a load terminal, an end-of-conversion terminal, a...
4999624 High speed high resolution analog/digital converter circuit  
An analog-to-digital conversion circuit is provided with an analog subtractor having a subtract input coupled to the output of a digital-to-analog converter. An analog-to-digital converter is...
4998107 Control method of multi-channel digital-to-analog converting circuit  
Control method for obtaining enough blank time available for operations of a CPU other than switching by employing only a single D/A converter is disclosed. Since data to be processed comprise data...
4985703 Analog multiplexer  
An analog multiplexer comprises MOS FET circuits of (n+1) in number corresponding to analog input terminals of (n+1) in number, and circuits of (n+1) in number for applying a fixed electric...
4973976 Multiplexing parallel analog-digital converter  
A multiplexing parallel analog digital converter including two multiplexers, comparators, a demultiplexer, and a control unit. One multiplexer is provided the reference voltages resulting from a...
4974181 Adaptive data acquisition multiplexing system and method  
An adaptive data acquisition multiplexing system having a monitor terminal and one or more remote terminals with a communication link between them. The remote terminals each include signal...
4972190 Analog signal digitizer for recording on a video  
An analog signal digitizer for recording analog signals in a digital form on a video tape of a video cassette player. The digitizer is connectible between an audio production device, such as a...
4968988 Time interleaved analog-digital converter and a method for driving the same  
A time interleaved analog-to-digital converter includes a plurality of analog-to-digital subconverters which are monolithically integrated in an array on a semiconductor chip and are sequentially...
4965577 Semiconductor integrated circuit device having a wiring layout to avoid intersections between analog signal wiring layers and digital signal wiring layers  
A semiconductor circuit is constructed of a digital signal input circuit and an analog signal input circuit to be fed with an analog signal through a multiplexer. An analog signal wiring layer to...
4937575 Precision A/D converter utilizing a minimum of interface interconnections  
An A/D converter circuit generates a precise digital signal which accurately corresponds to an analog input signal. The A/D converter comprises a converter element, having a first and second, input...
4933676 Programmable multi-input A/D converter  
An analog-to-digital converter circuit having an interface and control logic for access and control by a computer processor. The converter has a total of eleven analog voltages coupled to its...
Matches 251 - 300 out of 464 < 1 2 3 4 5 6 7 8 9 10 >