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4558422 |
Digital signal sampling system with two unrelated sampling timebases
A digital signal sampling system is disclosed for reconstructing the time relationship of digital data signals sampled by two sampling clock signals with different unrelated timebases. The digital...
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4547826 |
Generalized real-time thermal model
A generalized real-time thermal model of an induction motor produces values indicative of the transient and steady state temperature condition of the motor. Each of these values is compared with...
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4521861 |
Method and apparatus for enhancing radiometric imaging
Disclosed is a method and apparatus for enhancing target detection, particularly in the millimeter wave frequency range, through the utilization of an imaging radiometer. The radiometer, which is a...
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4511824 |
Parallel access memory lighting system
The disclosure relates to an electronic dimmer with specific computer control especially for theatrical productions with an emphasis upon improved electronic processing especially a parallel access...
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4507740 |
Programmable signal analyzer
A programmable multi-channel signal analyzer capable of automatically evaluating and displaying various parameters of complex analog waveforms is disclosed. A non-real time sampling technique which...
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4506332 |
Facility for monitoring the level of a radio-frequency signal
A system for monitoring the level of an RF signal having such a small amplitude that it must be amplified before it can be monitored. To determine the deviation of the amplifier gain from the...
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4484295 |
Control circuit and method for varying the output of a waveform generator to gradually or rapidly vary a control signal from an initial value to a desired value
Methods for operating a control circuit, having a programmable signal characteristic, in a manner so as to gradually vary a D.C. analog output level from an initial value to a final value, as well...
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4477779 |
Dual channel gated peak detector
A dual channel peak detector having an automatic gain control (AGC) circuit aintains an internal replica of a gated input signal waveform at a constant peak level. An rf signal is input to a double...
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4414639 |
Sampling network analyzer with sampling synchronization by means of phase-locked loop
An improved Sampling Network Analyzer is disclosed, in which synchronization of the sampling of one or more input signals, either voltages or currents, is effected by means of a phase-locked loop...
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4412302 |
Digital phase demodulation and correlation
A system for digitally detecting the energy content of a received analog signal of frequency f c . The system comprises signal means for generating sampling pulses of repetition rate 4 f c , a...
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4371908 |
Digital protective relaying systems
In a digital protective relaying device for protecting electric power transmission line including an electric station at each end thereof, and each electric station including at least one circuit...
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4359682 |
Method and apparatus for testing the output reflection coefficient of an automatic level controlled source
A method is disclosed for measuring the absolute value of the reflection coefficient between a transmission line of known characteristic impedance and the output port of an automatic level...
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RE30764 |
Electrical output peak detecting apparatus
Anticipation signals are derived for each peak whenever a differential exists within a closed loop having the electrical output connected to the input thereof and a confirmation signal is derived...
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4291355 |
Programmable overload circuit
Disclosed is an overload protective circuit for an electric motor which is adaped to monitor and track motor temperature as a function of an operating parameter, namely armature current. The...
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4267640 |
System for ascertaining magnetic field direction
A system for detecting magnetic field direction comprising a pair of orthogonally positioned rods each having a rectangular shaped BH curve, a switching winding, and detectors for detecting the...
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4241262 |
Circuit for measuring the charge stored in a charge-coupled device
The charge-coupled device comprises at least one transfer electrode connected to a control line for transmitting a transfer signal. The circuit for measuring the charge stored in the device...
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4207557 |
User electric energy consumption apparatus
A supplemental energy register in which successive increments of consumed electrical energy are detected at a kilowatthour meter, and are translated into electrical pulse signals. Digital...
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4200929 |
Input device for delivery of data from digital transmitters
A digital device for monitoring objects whose states are characterized by two-positioned signals, e.g., yes-no, on-off, etc., allows necessary instructions to be formed, on the basis of an analysis...
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4183072 |
Protective relaying system
A protective relaying system including a protected AC transmission line and detection means for detecting a change in propagation mode of a traveling wave propagating along the transmission line....
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4100532 |
Digital pattern triggering circuit
A digital pattern triggering circuit combines an addressable memory and a processor. Input data patterns address corresponding memory elements whereby data previously stored in the memory by the...
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4041395 |
Transmitter performance monitor and antenna matching system
A system for detecting, indicating, and adjusting the degree of mismatch between a transmitter and an electrical transmission line, with additional measurement of transmitter performance...
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4020286 |
Signal analysis apparatus for amplitude statistics
Acoustical signals of sound and noise levels are analyzed automatically for statistical characteristics of such signals which are required to be measured by recent environmental and health and...
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4011503 |
Apparatus for measuring the phase relation of two alternating current signals
A known reference signal is applied to a zero crossing detector and normal and inverted outputs from the zero crossing detector are applied to the input control terminals of a pair of bilateral...
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3998093 |
Energy monitoring system
A system for monitoring and displaying the consumption of energy by measuring the actual energy consumed and comparing the measured energy consumption with an ideal or desired energy consumption....
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3992668 |
Electro-thermal readout of coulometers
Systems are disclosed for reading the integral stored in a coulometer by sensing the thermal properties of the electrolyte. A preferred embodiment comprises at least one temperature sensitive...
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3986108 |
Apparatus and method for measuring capacitance
Capacitance of a network-under-evaluation is measured by employing a ramp signal technique. A periodic ramp signal having a known slope and equal positive and negative amplitudes is supplied to the...
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3951389 |
Elastomer processing method
A method for indicating the time integral of the electrical power consumed in elastomer mixing, working, warming or other processing and for controlling the processing in accordance therewith. An...
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3903402 |
Digital computer program system employed in a hybrid loadflow computer arrangement for monitoring the security of an electric power system
A hybrid loadflow computer arrangement includes an analog network simulator and a digital computer which acquires and processes on-line data and operator data related to the power system for which...
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3898643 |
Electronic display controlled stage lighting system
An electronic display controlled lighting system and method for controlling a large number of theatrical stage lights including data storage apparatus for storing information representing sequences...
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3833856 |
APPARATUS FOR TESTING AN AMPLIFIER
A testing device for measuring phase shift and amplitude changes in an amfier. A frequency synthesizer provides a sine wave through first and second channels with the amplifier being connected in...
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3812334 |
HIGH SPEED MEASUREMENT SYSTEM
A digital multimeter and associated circuitry provides a high speed conversion, at precise increments, of analog input signals to a digital format while measuring and analyzing the input signals....
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3778608 |
ELECTRICAL MEASURING SYSTEMS USING A QUARTER-SQUARE MULTIPLIER
A system for measuring electrical power and including a pair of converters for providing a pair of output pulse trains, the duration of the pulse being proportional to the means squared value of...
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3764989 |
DATA SAMPLING APPARATUS
Data sampling apparatus for sampling and storing the values of bits included in a plurality of binary coded signals applied to a corresponding plurality of input data lines. The binary coded...
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3670150 |
DYNAMIC RANGE SPLITTER FOR AN ANALYZER OF PARTICLE-PRODUCED PULSES
Generated pulses, having random amplitudes relative to particle sizes which lie in an especially wide range, are fed into a plurality of parallel channels, at the input of each of which there is an...
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3643075 |
DIGITAL SIMULATION
Digital data in the form of a bit pulse train from a phase shift generator is divided into a primary bit part and a remainder code. The remainder code is examined in correction code logic circuitry...
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3626168 |
MEASURING CORRELATION, AMPLITUDE PROBABILITY AND PROBABILITY DENSITY DISTRIBUTIONS, AND SIGNAL RESPONSE AVERAGING
An online real-time instrument for measurement of auto and cross correlation, amplitude probability distribution and amplitude probability density distributions of random analog signals and for...
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3491295 |
R.M.S. INSTRUMENT HAVING VOLTAGE CONTROLLED OSCILLATOR IN FEED-BACK LOOP
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3480858 |
DIGITAL CAPACITY MEASURING INSTRUMENT INCLUDING A DIFFERENCE AMPLIFIER AND A DIRECT CURRENT-TO-FREQUENCY CONVERTER
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3426187 |
CONVERSION APPARATUS AND METHOD
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3331955 |
Signal analyzer systems
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3218623 |
3 plate proximity scorer
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3114831 |
Correlation circuit
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3087487 |
Computer of average response transients
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2970261 |
Signal analyzer
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2871465 |
Measuring process for the recording of the intensity of signal sequences
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2839246 |
Automatic field plotter
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3559180 |
Title is not available
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