Class 708/101 - Pulse repetition rate

Subclass of Class 708 - Electrical computers: arithmetic processing and calculating
Definition: Subject matter wherein quantities are determinable from
No. of patents: 49
Last issue date: 01/01/2008

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Number	Title	Issue Date
7314114	Flat panel diffuser A device including a membrane having first and second faces; a first substrate disposed on the first face of the membrane and having (i) a plurality of first absorptive regions and (ii) a plurality of first reflective regions formed as wells in a face of the first s...	01/01/2008
7310604	Statistical sound event modeling system and methods Complex sound events are created by generating multiple different kinds of simpler sounds with randomly varying repetition rates. The average repetition rate can also be variable. The values of sound parameters such as wave selection, pitch distribution, pan distrib...	12/18/2007
7271631	Clock multiplication circuit A clock multiplication circuit simple in configuration, easy to adjust the characteristics thereof, and capable of shortening lockup time. The circuit delivers an output clock signal at a frequency that is a multiple of the frequency of a reference clock signal as i...	09/18/2007
7205798	Phase error correction circuit for a high speed frequency synthesizer Circuits, methods, and apparatus for reducing the phase error in an NCO clock output to reduce the clock jitter. This is particularly beneficial where the frequencies of the NCO output and reference signal are unrelated. One embodiment provides a circuit that correc...	04/17/2007
7197283	Dynamic frequency synthesizer configuration A system and method are disclosed for configuring a frequency synthesizer to generate a frequency. Configuring a frequency synthesizer to generate a frequency includes transferring channel information that identifies the frequency to be generated from an external pr...	03/27/2007
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 succession, each DDS accumulator state, and determining whether the D...	09/05/2006
7002380	Frequency divider with funnel structure In a frequency divider enabling the division by N of a frequency Fe and comprising at least one prescaler followed by a division chain, the prescaler has at least one input for the frequency signal Fe to be divided, one input for a command NA of the basic division r...	02/21/2006
6924684	Counter-based phase shifter circuits and methods with optional duty cycle correction Phase shifter circuits and methods use counters to define the positions of the output clock edges. A plurality of counters are each clocked by a count clock relatively much faster than the input clock. A first counter counts for one input clock period, and a delay v...	08/02/2005
6906562	Counter-based clock multiplier circuits and methods Clock multiplier circuits and methods use counters to define the positions of the output clock edges. A plurality of counters are each clocked by a count clock relatively much faster than the input clock. A first counter counts for one input clock period, and the co...	06/14/2005
6906571	Counter-based phased clock generator circuits and methods Phased clock generator circuits and methods that use counters to define the desired positions of the phased output clock edges. A plurality of counters are each clocked by a count clock relatively much faster than the input clock. A first counter counts for one inpu...	06/14/2005
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 intersection or series of intersections based on the particular...	08/25/1998
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 prevented. A means (14) is provided for prohibiting the generation, in acc...	10/10/1995
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 transmitting an ultrasonic ranging pulse toward the datum and further...	09/26/1995
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) into an R-bit first phase signal (θ1) indicating the phase ...	10/18/1994
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 computer triggered by cash received in the device, a video c...	08/30/1994
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 latch is provided having a set of latch inputs each coupled ...	04/30/1991
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 frequency by providing an NCO output signal to a controlla...	06/12/1990
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 pulses, the number being selected based on the state of a control...	03/21/1989
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 engine....	01/07/1986
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 ratio is provided. The device comprises a circuit for gene...	09/25/1984
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 wide range of digital delaying requirements. Bipolar input...	08/28/1984
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.multidot.p, wherein N and p are integers. Thus, an auxiliary pulse train is obtained. In a next step, there ...	02/14/1984
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 accumulating register in mutual cooperation as a digital integrator, t...	10/18/1983
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 calculation if the control switch is actuated at least two times ...	10/19/1982
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 detects a low rate of production of symbols of largest magnit...	10/19/1982
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 exchanging data with peripheral devices through at least one data ...	09/07/1982
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 arbitrarily timed, is divided by a clock dividing circuit into a n...	01/12/1982
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 having precise charge content, and (3) the production of pos...	12/01/1981
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 interval. The function generator comprises a rate multiplier circui...	10/06/1981
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 pulses of the nonlinear pulse pattern. A comparator compares...	03/10/1981
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 output signal frequency. The control device generates a pair of ...	11/18/1980
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 device which is in immediate readiness for operation and compris...	09/30/1980
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 linearly changing time dependent variable. The value of the...	08/12/1980
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, including a counter for counting the reference instruction ...	07/15/1980
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 digital word. An up/down counter is arranged to supply the digi...	08/28/1979
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 time intervals during which the input signals are counted,...	04/17/1979
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 known frequency and measures the interval between event puls...	06/06/1978
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 digital calculator assembly. A source provides a sele...	05/09/1978
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 from a master clock which gates a plurality of cascade con...	04/11/1978
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 of the median leading and trailing edges, generates a digita...	02/14/1978

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Class 708/101 - Pulse repetition rate