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4057795 |
Analog-to-digital encoder
This encoder comprises a series of resistors for determining the reference voltages, and comparators having at least one pair of outputs A and B. First inputs of said comparators are connected...
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4008468 |
Analogue-to-digital converter with controlled analogue setting
A precision and high-speed analogue-to-digital converter has two separate groups of comparators linked by an intermediate network comprising a digital-to-analogue converter made up of current...
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3997894 |
Analog-to-digital converter with electro-optical coding
An EMP resistant A/D converter having no triggered circuits, the digital code word being formed by sampling the analog function on a periodic basis, selectively quantizing the levels sampled into...
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3949170 |
Signal transmitting system including A-D and D-A converters
A signal transmitting system including an A-D converter for converting an analog input signal to a digital signal and a D-A converter for re-converting the digital signal to an analog output signal...
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3932865 |
Analog-to-digital converter
An accurate, simple and compact analog-to-digital converter has been found. The converter comprises A voltage divider circuit including a plurality of stepped voltage dividing points separated...
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3877025 |
Analog to digital converter of the parallel comparison
An analog-to-digital converter for converting at a high rate an analog input signal into a digital signal by comparing it with a predetermined reference voltage parallelly. The converter comprises...
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3858200 |
VARIABLE THRESHOLD FLASH ENCODER ANALOG-TO-DIGITAL CONVERTER
An analog-to-digital converter for providing a binary word of n bits representative of an analog voltage input has n comparator circuits. Each comparator circuit has an input terminal for receiving...
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3858199 |
TRACKING LEVEL DETECTOR
A tracking level detector is described capable of accommodating n analog inputs, where n is an integer ranging from one to infinity, to provide an analog output equal in magnitude and electrically...
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3852533 |
SAMPLING AND ANALOG-TO-DIGITAL CONVERTER APPARATUS FOR USE IN A TELEPHONE MESSAGE METERING SYSTEM
Disclosed is a local message metering system which detects the analog voltage of a telephone subscriber metering line caused by the trunk circuit of a telephone exchange. Analog gates are employed...
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3846786 |
HIGH SPEED PARALLEL-CASCADED ANALOG TO DIGITAL CONNECTOR
An ultra high speed, parallel-cascaded analog to digital converter employs non-saturating current switches, a constant current source, and a summer for effecting the parallel-cascaded...
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3829853 |
HIGH-SPEED ANALOG-TO-DIGITAL CONVERTER
An analog input voltage is fed to each input of a plurality of comparators. The other input of each comparator is connected to a source of reference potential having a plurality of fixed reference...
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3806915 |
MULTITHRESHOLD ANALOG TO DIGITAL CONVERTER
A method and apparatus for performing high speed conversion of an analog signal into a binary digital code. The analog input signal is applied simultaneously to a plurality of threshold detectors...
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3742389 |
VOLTAGE TO FREQUENCY CONVERTER HAVING DUAL STANDARD CHARGE DISPENSERS
A voltage to frequency converter having a pair of standard charge dispensers each generating a ramp function, the ramp function being utilized in an AND-OR invert gate to provide a free mode of...
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3737894 |
ENCODER FOR HIGH-SPEED PCM SYSTEM
An analog signal to be encoded is fed in parallel to 16 comparison stages of 16 comparators each, every comparator working into an individual flip-flop to set it upon the occurrence of a reading...
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3735390 |
METHOD AND CIRCUIT FOR CONVERTING AN ANALOG SIGNAL INTO A SIMULTANEOUS DIGITAL SIGNAL
The present invention relates to a method for converting an analog signal into a simultaneous digital signal and to a circuit for carrying out the method. Therefore, the complete digital...
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3721975 |
HIGH SPEED ANALOG-TO-DIGITAL CONVERTER
An analog-to-digital converter is provided which is capable of high speed operation in the nanosecond range. The analog input is introduced to an N-bit analog/digital converter; and the resulting...
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3710377 |
HIGH SPEED AN ANALOG-TO-DIGITAL CONVERTER
An analog signal is directed to a plurality of comparators. Each of the comparators has a different threshold level of conduction. Each threshold level is determined by a different reference...
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3701144 |
HIGH FREQUENCY ANALOG-TO-DIGITAL CONVERTER
An analog-to-digital converter having a signal generator providing a sinudal reference signal which is to be compared to a high frequency analog signal, a plurality of threshold units each biased...
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3692982 |
DIGITALLY CONVERTED ANALOG DISCRIMINATION SYSTEM
A system for converting an analog light intensity signal from a photo sensor into a four level digital code. The system is used in connection with document scanners which have multiple response...
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3678413 |
PULSE CODE MODULATION FEEDBACK ENCODERS
A pulse code modulation encoder having two comparators, one receiving analogue signals to be encoded via a unity gain amplifier and the other arranged to receive signals after they have been...
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3675238 |
INTERPOLATION MEANS FOR DISPLACEMENT MEASUREMENT
The invention contemplates employment of plural preset comparators, such as flip-flop set to trigger at different reference-voltage levels, to accurately identify and quantize discrete voltage...
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3662380 |
TRANSIENT RECORDER
An analog transient signal is converted to a Gray digital code and is read into a recirculating MOS storage device. The memory is controlled by a triggering system so as to hold any desired portion...
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3641564 |
DIGITAL-TO-ANALOG AND ANALOG-TO-DIGITAL SIGNAL TRANSLATION WITH OPTICAL DEVICES
A signal-translating apparatus is disclosed wherein an electrical signal can be transformed between analog form and digital form by use of electrically energizable radiation sources which are...
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3636555 |
ANALOG TO DIGITAL CONVERTER UTILIZING PLURAL QUANTIZING CIRCUITS
A plurality of circuits which provide both sampling and comparison functions periodically sample an analog signal and compare the sample with an associated reference voltage. Since the sampling and...
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3623071 |
FORCED THRESHOLD ULTRA-HIGH-SPEED ANALOG TO DIGITAL CONVERTER
An analog to digital converter that provides conversion in real time at h bit rates and accuracy without the use of a digital to analog converter and successive comparisons or subtractions of...
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3611350 |
HIGH-SPEED PARALLEL ANALOG-TO-DIGITAL CONVERTER
Analog-to-digital converter wherein a multilevel detector containing comptors and a resistor chain evaluates the analog voltage and produces signals which are coded into binary form by gating...
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3610960 |
SCAN GENERATOR CIRCUIT
A circuit for converting an analog signal into sequentially spaced digital pulses. The circuit includes a chain of "N" identical stages which convert a signal amplitude to pulses and sequencing...
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3597761 |
HIGH-SPEED ANALOG-TO-DIGITAL CONVERTER AND METHOD THEREFOR
An analog-to-digital converter having first and second comparator banks where the analog input voltage is applied to both of the comparator banks simultaneously to allow the second subranging...
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3594766 |
ANALOG TO DIGITAL CONVERTER INCLUDING COMPARATOR CIRCUITS WITH INTERNAL LOGIC
An analog to digital converter is described having a differential analog input and a plurality of parallel digital outputs which includes a plurality of comparator circuits, each including a pair...
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3585631 |
SQUARE LAW ANALOG-TO-DIGITAL CONVERTER
A plural stage analog-to-digital converter with a square law transfer characteristic is described. The converter comprises in a typical embodiment three identical stages with the first stage having...
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3569960 |
CODED BINARY SYMBOL GENERATOR
A voltage divider network with means for selectively and sequentially interconnecting resistors of various ohmic values in one leg thereof to provide discrete voltages, each one of which voltage is...
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3550116 |
ANALOG TO DIGITAL CONVERTER CODER
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3537101 |
HIGH SPEED ANALOG-TO-DIGITAL ENCODER
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3518659 |
HIGH SPEED LIGHT SWITCH
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3508250 |
DEVICE FOR RANGE SWITCHING ANALOG VALUES FROM FIRST TO SECOND RANGES TO PRECISELY DETERMINE DIGITAL VALUE FROM ANALOG QUANTITY
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3506853 |
SELECTION DEVICE
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3505530 |
APPARATUS AND METHOD TO MEASURE THE AMOUNT OF YARN ON A BOBBIN
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3501625 |
ANALOG TO DIGITAL CONVERTER
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3495234 |
ANALOG-TO-DIGITAL CONVERTER
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3469254 |
ANALOG-TO-DIGITAL CONVERTER
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3461450 |
DAMPED OSCILLATION ANALOG-TO-DIGITAL ENCODER
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3430228 |
PARALLEL-TO-SERIAL CONVERTER FOR A BINARY CODE GENERATOR
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3425054 |
ANALOGUE DIGITAL CONVERTERS
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3407301 |
Electro-optical data processing system
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3392386 |
Multilevel digital skimmer
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3384889 |
Hybrid analog to digital converter
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3371337 |
High speed analog to binary converter
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3341839 |
Negative resistance devices
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3340526 |
Diode digitizer
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3311910 |
Electronic quantizer
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