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7501877 |
Superconducting single flux quantum modulator circuit
Objects of the present invention are to provide an integration circuit which produces no integration leak so that the bit accuracy is improved in a sigma-delta modulation circuit or a delta...
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6542088 |
Multiturn rotary encoder with multiple code carriers coupled by a reduction gear
A multi-turn rotary encoder that includes a first code carrier connected with an input shaft, a scanning device that scans the first code carrier and generates an absolute position of the input...
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6452520 |
Gated counter analog-to-digital converter with error correction
A superconducting A/D converter ( 10 ) has an error correction system ( 70 ) for eliminating non-linearities in a primary quantizer ( 30 ). The converter ( 10 ) includes a primary quantizer ( 30 ),...
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5942997 |
Correlated superconductor single flux quantum analog-to-digital converter
A correlated superconductor single flux quantum oscillator-counter analog-to-digital (A/D) converter has a superconducting quantum interference device (SQUID) quantizer 20 with two Josephson...
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5420586 |
Superconducting analog to digital converter type circuit
In circuits embodying the invention an analog input signal is magnetically coupled from an input superconducting loop to a second superconducting loop. The analog input signal present in the second...
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5398030 |
High-performance superconducting digital-to-analog converter employing double-junction squid flip-flops
A high-performance superconducting digital-to-analog (D/A) converter providing asynchronous high-speed, low-power D/A conversion. The high-performance superconducting D/A converter includes a...
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5345114 |
Superconductor logic and switching circuits
Current controlled superconductor switches formed by reactive patterning or other fabrication techniques may be used to form logic circuits including OR, AND, NOR, NAND, and NOT gates, a circuit...
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5341136 |
Bandpass sigma-delta modulator for analog-to-digital converters
A bandpass sigma-delta modulator for an analog-to-digital converter is provided in which an RLC circuit connected to the input analog signal is resonant at an intermediate frequency. A Josephson...
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5327130 |
Spur-free sigma-delta modulator and multiple flux quanta feedback generator
A spur-free sigma delta modulator analog-to-digital converter for converting an analog input signal to a digital output signal is provided. A race Josephson junction is provided between the pulse...
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5272479 |
High sensitivity superconductive digitizer
A high-sensitivity superconductive digitizer (10) which utilizes a dc superconducting quantum interference device (SQUID) (38) to convert an input current or magnetic flux into a frequency signal...
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5227792 |
Superconducting analog-to-digital converter with a triple-junction reversible flip-flop bidirectional counter
A high-performance superconducting analog-to-digital (A/D) converter providing high-speed, high-resolution A/D conversion with low power consumption. The superconducting A/D converter of the...
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5099238 |
Parallel analog to digital converter
A parallel analog to digital converter which uses a dual-rank arrangement of flash converters. The flash converters have Josephson junctions and act as a sample and hold circuit. The dual-rank...
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5089817 |
High resolution encoder
A high resolution encoder having a relatively high number of magnetic pole pairs with a magnetic flux strength sufficient for use in high resolution applications. Magnetic pole pair spacing varies...
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5019818 |
Superconducting analog-to-digital converter with grounded four-junction squid bidirectional counter
A high-speed, high-resolution superconducting counting A/D converter providing greatly increased conversion speeds with a low device count. The superconducting counting A/D converter includes a...
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5012243 |
Superconducting analog-to-digital converter with floating four-junction squid bidirectional counter
A high-speed, high-resolution superconducting counting A/D converter providing greatly increased conversion speeds with a low device count. The superconducting counting A/D converter includes...
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4963871 |
Analog-to-digital converter using superconducting material
An analog-to-digital converter using superconducting material. The converter includes a converter portion having a plurality of series-connected superconducting current channels for which different...
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4956642 |
Superconducting analog to digital converter
A superconducting analog to digital converter comprises a plurality of comparators, each of which includes a quantum flux parametron having a superconducting loop with two Josephson devices and...
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4940983 |
A/D converters
A successive approximation analog to digital converter including at least one superconducting loop (FIG. 3-30; FIG. 8-68). Superconducting loops (61-64) may be used to store flux quanta used as...
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4922250 |
Superconducting analog-to-digital converter with bidirectional counter
An analog-to-digital converter quantizer and bidirectional counter using superconducting quantum interference devices (SQUD's) as the principal elements. A double-junction non-latching SQUID is...
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4899145 |
Encoder and method of adjusting magnetic fields of the same
A rotary encoder comprises a rotator having ring-shaped multipole magnet and stator having magnetic field detecting sensors concentrically provided with the ring-shaped multipole magnet. The stator...
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4893121 |
Printwheel and encoder assembly
A printwheel encoder comprises a non-ferrous shaft having a magnet strip and a flexible Hall-effect sensor arrangement affixed thereon. Molded printwheels including a flux conducting ring having an...
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4879488 |
Vernier for superconducting analog-to-digital converter
An analog-to-digital converter employing superconducting quantum interference devices (SQUID's) to produce countable voltage pulses at uniformly spaced quantization levels, the converter having...
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4841228 |
Apparatus for indicating the resistive characteristic of a capacitor
Current passing through a capacitor being measured is combined with programmable portions of oppositely phased current, and means are provided for deriving voltages from said combined current that...
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4672359 |
Superconducting analog-to-digital converter and digital magnetometer and related method for its use
A device for use as an analog-to-digital converter or a digital magnetometer using a double-junction superconducting quantum interference device (SQUID) and having an extremely fine sensitivity,...
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4536744 |
Analog to digital converter for precision measurements of A.C. signals
An analog-to-digital converter for performing extremely accurate measurements of AC voltages. In the conversion process, the most significant bits are determined using a precision ratio transformer...
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4315255 |
Multiple-quantum interference superconducting analog-to-digital converter
An analog-to-digital converter using superconducting interferometers connected in parallel, each interferometer being identical. The coupling of the analog signal to each successive interferometer...
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4179750 |
Magnetic bubble type D/A converter
A digital-to-analog converter utilizing magnetic domains with particular application to addressing large capacity bubble memory modules economically and with as short a delay as one cycle of...
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3983419 |
Analog waveform transducing circuit
An analog waveform transducing circuit is disclosed which includes a pair of superconductive circuits connected in parallel between a pair of terminals. One of these circuits includes a Josephson...
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3928799 |
Automatic balancing DC comparator voltmeter
An apparatus for measuring potentials with great accuracy using a self-balancing current comparator. The comparator includes a variable primary winding and a secondary winding wound on a magnetic...
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3893104 |
Analogue-digital voltage measuring apparatus
An apparatus for improving the operation of a digital voltmeter by eliminating a large time delay before an equilibrium state is reached due to the hysteresis phenomenon of a magnetic core used in...
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3803591 |
A-D CONVERSION SYSTEM USING MAGNETIC BUBBLES
An A-D conversion system, for converting an analog input signal to a digital signal, comprising an orthoferrite sheet on which are disposed circuits comprising a bubble generating section, a bubble...
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3745557 |
ANALOG-DIGITAL AND DIGITAL-ANALOG CONVERSION DEVICE AND METHOD
The conversion of analog into digital signals and digital into analog signals is accomplished with the use of a signal transformer device which produces multiple output voltages whose values vary...
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3656153 |
ANALOGUE-DIGITAL CONVERTING APPARATUS
This disclosure is an analogue-digital converting apparatus wherein a magnetic core is provided with an input winding, a variable winding in which the number of turns can be changed, a fixed...
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3648277 |
MAGNETIC GRAPHICAL DATA DEVICE
A coordinate digitizing device is provided with a localized source of magnetic energy positioned with respect to a wire array, each of said wires terminated in a common delay line. The magnetic...
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3626292 |
VOLTAGE RATIO DETERMINATION DEVICE
In the ratio determination device, means are provided for repeatedly reversing the connections of the input terminals to the primary winding of a transformer, and means are provided for causing the...
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3522598 |
SEMICONDUCTOR VOLTAGE GENERATOR ANALOG TO DIGITAL AND DIGITAL TO ANALOG CONVERSION DEVICE
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3460133 |
ASYNCHRONOUS MAGNETIC CORE ANALOG-TODIGITAL CONVERTER
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3458735 |
SUPERCONDUCTIVE TOTALIZER OR ANALOG-TO-DIGITAL CONVERTER
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3419712 |
Function generation and analog-to-digital conversion using superconducting techniques
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3386089 |
Apparatus for converting information to binary digital form
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3378833 |
Analog-digital converter employing a ring demodulator
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3349391 |
Counting type analogue-to-digital converters
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3327303 |
Cryogenic analog-to-digital converter
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3309603 |
Voltage to pulse frequency converter
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3293638 |
Arrangement for converting an information signal
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3264636 |
Electronic signal converter
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3259735 |
Arithmetic computation using a nuclear magnetic resonance analog to digital converter
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3238522 |
Magnetic analog to digital converter
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3231886 |
Analog-digital converters
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3219833 |
Apparatus for encoding voltages supplied by thermocouples
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