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8467623 Invariant pulse latency coding systems and methods systems and methods  
Systems and methods for processing image signals are described. One method comprises obtaining a generator signal based on an image signal and determining relative latencies associated with two or...
7822800 Apparatus and method for performing a calculation operation  
The invention provides an apparatus and a method for performing a calculation operation with at least one input signal consisting of signal sections, wherein each signal section of said input...
7498852 Phase error correction circuit for a high speed frequency synthesizer  
Circuits, methods, and apparatus for adjusting an NCO output in order to provide a signal that is phase-locked to a reference signal. This is particularly beneficial where the frequencies of the...
7103622 Direct digital synthesizer with output signal jitter reduction  
A method and apparatus for reducing unwanted harmonics in direct digital synthesizer (DDS) output. The method comprises the steps of providing a set of k phase-shifted clock signals, examining, in...
5798949 Traffic safety prediction model  
The present invention provides an Traffic Safety prediction Computer Program (TRAF-SAFE) and sub-models for predicting the number of accidents, injuries and fatalities expected annually at an...
5457660 Reset signal generation circuit having a function for protecting write data  
In a reset signal generation circuit for generating a reset signal to a CPU in accordance with an external clock signal, illegal operation or loss of write data during a write period is...
5453932 Device and method for detecting and elimination of spurious ultrasonic ranging echoes  
An ultrasonic ranging device and method for positioning a working implement relative to a datum is disclosed. The ultrasonic ranging device is coupled to the implement and is capable of...
5357447 Rate conversion apparatus  
A first clock signal of fl in frequency is converted into a second clock signal having a frequency of f2=(n/m) f1. The first clock signal is converted by a tank circuit (12) and a converter (13)...
5343386 Apparatus for making electronically-produced postcards and method of operating same  
An apparatus housed in a booth for automatically producing printed postcards incorporating a self-portrait of the user integrated into a pictorial background including a cash-receiving device, a...
5012437 Digitally controlled oscillator  
A digitally controlled oscillator (DCO) includes a binary full adder having a first set of inputs coupled to input lines, a second set of inputs, a set of summation outputs and a carry output. A...
4933890 Digital frequency synthesizer  
The edge timing of a clock-synthesized numerically controlled oscillator (NCO) waveform of a desired frequency is corrected to coincide more precisely with that of an ideal waveform of the desired...
4815018 Spurless fractional divider direct digital frequency synthesizer and method  
A direct digital frequency synthesizer including a counter circuit for receiving input signal pulses and for providing a corresponding output signal after receiving a number of input signal...
4563741 Rotational angle signal generating system for internal combustion engines  
A rotational angle signal generating system for an internal combustion engine produces its signal from the a.c. signal generated by a magneto-generator mounted in the ignition distributor of the...
4473885 Frequency dividing ratio setting device for programmable counters  
A frequency dividing ratio setting device capable of successively changing the frequency dividing ratio of a programmable counter and further changing the changed portion of the frequency dividing...
4468624 Programmable synchronous digital delay line  
A synchronous digital delay line that can be programmed by variable delay increments to independently delay the leading and trailing edges of a digital signal and that can be utilized to provide a...
4432065 Method and apparatus for generating a pulse train with variable frequency  
For generating a pulse train having a variable frequency, in a first step a referance frequency is divided by the combined factor Dr =Np, wherein N and p are integers. Thus, an auxiliary pulse...
4410954 Digital frequency synthesizer with random jittering for reducing discrete spectral spurs  
A digital frequency synthesizer for synthesizing a selected frequency or a library of preselected frequencies in which a selected phase increment is fed at a clock rate to an adder and...
4354412 Adaptive metronome for an automatic rhythm generator  
A sequence of timing signals is generated having a time spacing corresponding to the average spacing between successive actuations of a control switch. The system automatically starts a new...
4355402 Data modem false equilibrium circuit  
Circuitry for detecting and correcting false equilibrium conditions generated in data modems by sudden changes in gain of an associated transmission system including a false gain detector which...
4348743 Single chip MOS/LSI microcomputer with binary timer  
A microcomputer which is implemented by MOS/LSI techniques on a single semiconductor chip is disclosed. The computer includes a data processing system having control logic means, means for...
4310802 Logical waveform generator  
Input logical data is sequentially divided by a data dividing circuit for each time slot into n data trains, of which each data block has an n time slot length. A clock signal which can be...
4303985 Analog voltage to pulse rate or analog to frequency converter  
An apparatus for changing an analog input voltage into a pulse rate particularly characterized by (1) the absence of substantial voltage across switching mechanisms, (2) the generation of pulses...
4293917 Non-linear function generator  
A function generator for producing digital data which represent a function of the time interval between two events and in which the digital data have a non-linear relationship to the time...
4255793 Apparatus for generating nonlinear pulse patterns  
Apparatus for generating a plurality of nonlinear pulse patterns from a single linear pulse pattern. A first counter counts the pulses of the linear pulse pattern and a second counter counts the...
4234929 Control device for a phase lock loop vernier frequency synthesizer  
Disclosed is a device for controlling the selection of divider factors in a vernier frequency synthesizer employing a pair of phase lock loops coupled through a mixer to supply a synthesized...
4225793 Arrangement for monitoring a current network  
An arrangement for monitoring a current network to which is connected at least one self-excited or separately excited three-phase synchronous machine which is operatively connected e.g. to a...
4217655 Clock circuit having a swept output frequency  
Disclosed is a digital circuit for generating a swept clock frequency having a linear rate of change. A constant frequency signal is divided by a counter signal representative of the inverse of a...
4213186 Pulse interpolation system  
The prior D.D.A. (Digital Differential Analyzer) having an integrand register, a remainder register and an adder for pulse interpolation has been improved by attaching some new units to the same,...
4166249 Digital frequency-lock circuit  
A digital frequency-lock circuit has a binary rate multiplier connected between a fixed frequency oscillator and an output terminal to modify the oscillator output signal in accordance with a...
4150432 Frequency counter and method  
An averaging frequency counter for determining the frequency of recurrence of input signals has an event counter for counting a number of the input signals, a gate counter for counting a number of...
4093850 Ratemeter which calculates the reciprocal of the period  
A fast response digital ratemeter is disclosed which calculates the reciprocal of every period between consecutive event pulses. A period counter is continuously incremented by clock pulses of a...
4089060 Digital logarithmic apparatus  
Digital apparatus for approximating the logarithmic equation of the form: X= W Logz (Y)+ K where W and K are selected constants, employs basically a three counter, one comparator logarithmic...
4084246 Pulse generator  
A pulse generator for producing two output pulse trains A and B where the total number of pulses in both train A and B over a fixed time period remains a constant. The two pulse trains are derived...
4074358 Test set for measuring jitter distortion of data pulses  
Time jitter distortion of data pulses is measured by a test set which recovers a median leading and a median trailing edge from the data pulses, defines a point of time reference at the midpoint...
4053879 Fail safe digital code rate generator  
A digital code rate generator comprises a digital number generator driven by a clock running at an appropriate frequency. Preferably the digital number generator is arranged to simultaneously...
4049953 Complex pulse repetition frequency generator  
A complex pulse repetition frequency generator for producing a pulse repeion frequency (PRF) signal having programmable stagger intervals. The device consists of a clock for selecting one of a...
4017719 Binary rate multiplier with means for spacing output signals  
Circuit and method for spacing the output signals from a binary rate multiplier by adjusting the rate of the internal clock of the binary rate multiplier to a value approximating (N+1) times f0...
3999049 Synthesizer of multifrequency code signals  
Synthesizer of multifrequency signals for telephone sets, each multifrequency signal being formed by two concomitant sinusoidal signals of different basic frequencies, said frequencies forming...
3998088 Testing apparatus for incremental shaft encoder  
An apparatus for testing an incremental shaft encoder in which the encoder is placed upon a rate table together with a gyroscope to permit coincident rotation. Every time the shaft of the...
3996453 Totalizer  
A totalizer is provided which is adapted to accept a variety of process signals at the input thereof, which process signals will be in analog form. The signals are then first converted into...
3989961 Bidirectional reset integrator converter  
A bi-directional reset integrator converter, including a common reset pulse generator operable by input currents of either direction, is disclosed. The reset pulse generator creates a current flow...
3943341 Computing apparatus  
Computing apparatus for producing a digital output equal to ##EQU1## where N1 is a preset digital factor and V1 and V2 are analogue input signals. The apparatus includes a pulse generator arranged...
3943454 Digital logic circuits for producing digital sum and difference frequencies  
The present invention provides means for deriving a single frequency signal from logic signals A(t) and B(t) by first applying the logic signals to a combining arrangement, which includes logic...
3911258 Pulse interpolation system  
A pulse interpolation system with high speed operation and improved linearity is described. An interpolation pulse train having "one" in all bit places is applied to the axis with the largest...
3909596 System for determining processing losses or gains  
Method and apparatus for providing substantially instantaneous reading and recording of processing losses and gains from a continuous liquid chemical process, such as refining of vegetable oil....
3894218 Variable inverse period timer  
A variable inverse period timer computes the inverse period between events, where the repetition frequency of the events can vary greatly. Where the repetition frequency of the events is...
3885140 Densitometer  
A vibration densitometer including a closed loop electromechanical oscillator for vibrating a fluid immersible vane. A digital output directly proportional to density is achieved through a unique...
3885142 Binary rate multipliers  
An output binary rate vector is provided in response to a selected input number by generating a plurality of individual binary rate vectors substantially concurrently. Each of the individual...
3852580 HYPOTENUSE CORRECTION CIRCUIT  
A feed rate generator for use in numerical control systems producing drive signals causing a movable member to move in at least two axes of motion at a predetermined velocity along a predetermined...
3851158 METHOD AND APPARATUS FOR DERIVING THE MEAN VALUE OF THE PRODUCT OF A PAIR OF ANALOG QUANTITIES  
Each of a pair of time dependent input analog quantities is sampled at a predetermined rate, and the successive samples are encoded into first and second separate trains of binary pulses wherein...

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