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9013172 Apparatus and method for detecting frequency  
There are provided an apparatus and a method for detecting a frequency, the apparatus including a signal converting unit removing a high frequency component from an input signal and then...
8901918 Load connection state detection circuit  
This load connection state detection circuit includes a PNP type transistor whose emitter is connected to a power source terminal, a NPN type transistor where the emitter thereof is connected to...
8674679 Power saving during a connection detection  
Power saving for hot plug detect (HPD) is disclosed. In a particular embodiment, a method includes detecting, at a source device that is connectable to a sink device, a connection of the source...
8664933 Frequency measuring apparatus  
A frequency measuring apparatus includes: a counter section adapted to count a signal including a pulse signal for a predetermined time period, and output a binary count value corresponding to a...
8575914 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Frequency measuring apparatus
 
A frequency measuring apparatus includes: a counter section adapted to count a signal including a pulse signal for a predetermined time period, and output a binary count value corresponding to a...
8508213 Frequency measurement device  
A frequency measurement device for measuring a frequency of a signal to be measured including a pulse signal, includes: a signal multiplier section that multiplies the signal to be measured by n...
8461821 Frequency measuring apparatus  
A frequency measuring apparatus includes: a high-order digit calculation section adapted to measure an input signal and output a high-order digit value of a frequency value of the input signal; a...
8248258 Wakeup device detecting voltage variation in standby mode  
A resume device is provided. The device detects voltage variation in standby mode. When a big voltage variation is detected, a resume process is run and a sound is played. Volume of the sound is...
8169236 Frequency detection mechanism for a clock generation circuit  
A frequency detection mechanism for a clock generation unit on an integrated circuit includes a clock generation unit and a detection unit. The clock generation unit may generate an output clock...
8125250 Frequency detection mechanism for a clock generation circuit  
A frequency detection mechanism for a clock generation unit on an integrated circuit includes a clock generation unit and a detection unit. The clock generation unit may generate an output clock...
8111106 Switched phase and frequency detector based DPLL circuit with excellent wander and jitter performance and fast frequency acquisition  
Some embodiments of the present invention may include a DPLL circuit comprising a firmware. The firmware may comprise a re-sampled NCO phase detector capable of receiving a reference clock timing...
7835630 Adaptive and reconfigurable system for DC motor control  
An integrated circuit for controlling a DC motor is disclosed. The integrated circuit includes at least one digital position and speed circuit (DPS) for providing measurements of speed, position,...
7770081 Interface circuit for a single logic input pin of an electronic system  
An interface circuit for a single logic input pin of an electronic system, comprising a decoder for converting a pulse coded signal applied to said pin to a sequence of logic low and logic high...
7642767 Method and apparatus for measuring duty cycle  
Disclosed herein is a method and apparatus used to the measure duty cycle of a clocking waveform utilizing minimal hardware and achieving high accuracy. This invention utilizes digital sampling of...
7355537 Built-in self-test apparatus and method for digital-to-analog converter  
A built-in self-test apparatus for a digital-to-analog converter uses a differentiation unit for differentiating a digital-to-analog (DA) signal to obtain the differences between pulses of the...
7254502 Method and device for detecting period length fluctuations of periodic signals  
To determine the period length of a first signal, the length is measured by counting the periods of a second signal with a shorter period length. To measure the fluctuations of the period length...
7062164 Detection of data transmission rates using passing frequency-selective filtering  
A data receiver, which could be an optical transceiver, a modem, a router hub, is capable of detecting the transmission rate of incoming data. The data is converted to electrical waves appropriate...
6811291 Detector for signals with harmonically related components  
A processor that utilizes the presence of harmonic components in a noisy signal environment to enhance the desired frequency spectrum of the signal. Received signal and noise are filtered to...
6771061 High speed tester with narrow output pulses  
A tester that is well suited for operation at high speeds or with narrow pulses. The tester includes a state based pulse shaping circuit that combines edge signals into a pulsed output signal. The...
6759838 Phase-locked loop with dual-mode phase/frequency detection  
A phase-locked loop with dual-mode phase/frequency detection is provided. The phase-locked loop circuit includes a dual-mode phase/frequency detector, a loop filter, a voltage-controlled...
6624623 Method and apparatus for digitally measuring the frequency of a signal by integration of its signal phase  
In a method and apparatus for measuring the frequency of a signal by integration of its signal phase, a phase accumulator integrates the signal phase of the signal, at predetermined time...
6574168 Time measuring device and testing apparatus  
A time measuring device includes: an input signal detecting unit for detecting three or more edges in an input signal and to output three or more detection signals in parallel, the three or more...
6486805 Frequency to digital converter  
According to an embodiment of the present invention, an input signal is provided to an oscillator, which creates a count signal with a greater frequency than the input signal. The input signal...
6448757 Precise digital frequency detection  
A digital frequency detector (10) and method for digitally detecting arbitrarily small phase changes between a signal waveform and a reference waveform. Both the reference waveform and the signal...
6426634 Circuit breaker with integrated self-test enhancements  
A circuit switching device or circuit breaker with integrated self-test enhancements is disclosed having separable contacts operable under processor control to control power to a circuit...
6291981 Automatic test equipment with narrow output pulses  
Automatic test equipment suitable for testing high speed semiconductor devices. The test equipment includes a formatter circuit with a flip flop that produces an output in the desired format even...
6233529 Frequency spectrum analyzer having time domain analysis function  
A spectrum analyzer is provided with a continuous period measurement function which continuously measures time periods of each and every cycle of an IF signal to analyze changes in frequency and...
6115675 Double interpolation anti-skew compensation of sampled analog data points in a protective relay  
A protective relay system comprises current and voltage transducers 10, filters 12, and a multiplexor 14, the latter outputting an interleaved stream of analog phase current and voltage signal...
6026418 Frequency measurement method and associated apparatus  
The frequency measurement method and associated apparatus accurately determines the frequency of a periodic signal even if the frequency exceeds the nyquist frequency, typically established by the...
5845232 Apparatus and method for detecting splice overlaps or splice gaps in a tire  
An apparatus and related method for detecting splice gaps and splice overlaps includes a processor having a memory and a plurality of logic tables, wherein the processor is connected to an...
5832413 Generator protection system and method for phasor estimation and frequency tracking during frequency ramping  
A method for estimating phasors and tracking the frequency of a signal during frequency ramping is provided. The method uses a variable N-point DFT periodically to compute one or more phasors...
5832414 Generator protection system and method of compensating for errors in phasor estimation due to oscillations in discrete Fourier transform  
A new method of compensating for errors in phasor estimation due to oscillations caused by discrete fourier transforms used to estimate signal frequency is provided. The method uses a variable...
5808895 Method and apparatus for low signal to noise ratio instantaneous phase measurement  
The system and method of the present invention generates high resolution phase measurements without the high processing and memory overhead requirements found in prior art circuits and methods....
5471133 Digital device for measuring the frequency of an electrical signal  
In order to permit rapid, high-resolution measurement of the frequency of an electrical signal using a digital device, the electrical signal is fed to two linear-phase non-recursive digital...
5440228 Simultaneous signals IFM receiver using plural delay line correlators  
A simultaneous signals frequency measurement receiver comprising a number n of delay line correlators, with a complete set of n, delays, a number 2n of digitizers, computational means to define an...
5420501 Frequency spectrum analyzer  
A frequency spectrum analyzer wherein an input signal is subjected to A/D conversion, and the converted data is multiplied by a window function; and the thus processed signal is subjected to...
5359533 Method for determining a frequency/time profile of hits, and device for carrying out the method  
In a method for determining a frequency/time profile of hit sequences and the corresponding device, a measuring window is opened after an external starting signal has been locked. As long as the...
5357196 Circuit for converting a frequency of an input signal so a signal having a digital value corresponding to the frequency  
A measuring circuit with a simple circuit configuration is capable of correcting dispersion of a characteristic of a display apparatus and of displaying the measurement result. The measuring...
5329468 Actual operating time indicator  
An actual operating time indicator includes: a lifting motor for lifting a load up/down; a power detection unit for detecting an input power based on a current and a voltage supplied to the motor,...
5325049 Frequency deviation measuring apparatus  
Based on a desired center frequency and a frequency resolution for a signal to be measured which are entered via an operator section, a micro-CPU calculates the frequency dividing number, a preset...
5245311 Logical comparison circuit for an IC tester  
In the case of setting one comparison timing in one operation period, a select signal is set to the "0" level, by which first, second and third counters are each put in the state of operation of a...
5235287 Frequency measurement receiver with bandwidth improvement through phase shifted sampling of real signals using sampling rate selection  
This is a technique for extending the frequency range which employs a power divider having two outputs, one output being supplied to a first A/D converter, and the other output being supplied via...
5225768 Field test instrument  
A calibration generator for furnishing signals to tachographs, taximeters and other instruments used in fleet management systems. Calibrated frequencies and amplitudes are provided by the...
5218291 Meter and meter driving system with indication fluctuation suppression and enhancement  
A meter driving system receives pulse signals from a sensor, counting frequencies or periods of the input signals. The counted results are weight-averaged to determine an output value and a value...
5198748 Frequency measurement receiver with bandwidth improvement through synchronized phase shifted sampling  
A technique covered by patent applicaton S.N. 07/672,309 divides power of an input signal to two A/D converters. A processor receives the outputs of the two A/D converters. The input signal is...
5198750 Extremely wide range frequency measurement method  
This invention discloses a digital frequency measurement system, providing high accuracy and a fast dynamic response over an extremely wide frequency range. This measurement system provides for...
5165051 Modified fast frequency acquisition via adaptive least squares algorithm  
This is a method and associated apparatus for accurately and quickly estimating the amplitude, frequency and phase of a signal of interest. The method comprises the steps of, inputting the signal...
5128607 Constant events frequency measurement and fast inverse circuit  
A method and apparatus makes rapid frequency measurements by measuring time intervals for a series of blocks of event counts with the number of events in each block held constant. This makes the...
5111134 Method and apparatus for determining the frequency of short oscillation bursts of electrical signals  
In a method and an apparatus for determining the frequency of short oscillation bursts of electrical signals firstly oscillation bursts in desired number are read into a storage means and read out...
5099243 Digital frequency measurement receiver with bandwidth improvement through multiple sampling of complex signals  
This is a technique for extending the frequency range which employs in-phase and quadrature components of the signal coupled with non-uniform sampling to gain the advantages of a high sampling...

Matches 1 - 50 out of 316 1 2 3 4 5 6 7 >