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7610175 |
Timestamping signal monitor device
A signal monitor device that detects a signal propagating on a signal line and that generates a timestamp when the signal is detected. The timestamp may be used in a variety of applications...
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7502703 |
Calibration of the fundamental and harmonic once-around velocity variations of encoded wheels
A method of calibrating once-around and harmonic errors of encoded nips is provided. An encoder with an index pulse is used to measure the velocity and rotation of the driven wheel or idler. The...
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7482827 |
Integrated circuit with testable clock circuits
An integrated circuit ( 1 ) that comprises an internal clock circuit ( 12 ) with a clock output for clocking functional circuits ( 10 ) of the integrated circuit ( 1 ). The integrated circuit is...
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7457709 |
Systems and methods for particle counting
Systems and methods consistent with embodiments of the present invention provide a method for the measurement and analysis of particle counts in flow cytometry and hematology instruments. In some...
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7283926 |
Counter circuits and distance estimation methods
Counting circuits applied to distance estimation for ultra wideband (UWB) application, in which a first counting unit generates a sequence of pseudo-random number series not including zero, a first...
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7243169 |
Method, system and program for oscillation control of an internal process of a computer program
A method for reducing oscillations of an output value associated with a program to be operatively coupled to a data processing system. The program having an internal process configured to read an...
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7000162 |
Integrated circuit phase partitioned power distribution for stress power reduction
Disclosed is an integrated circuit device, comprising: a first power rail for supplying power to first latch and a circuit during a first clock phase; a second power rail for supplying power to a...
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6978411 |
Memory test system for peak power reduction
A memory test system for peak power reduction. The memory test system includes a plurality of memories, a plurality of memory built-in self-test circuits and a plurality of delay units. Each of the...
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6934652 |
On-chip temperature measurement technique
A temperature monitoring technique that eliminates the need for bipolar devices. In one embodiment of the present invention, a long-channel MOS transistor is configured in a diode connection to...
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6882697 |
Digital counter
A digital counter with a dial position having a hardware part which determines the n lowest-value bits of the dial position and a software part which determines the remaining higher-value bits of...
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6865703 |
Scan test system for semiconductor device
There is provided a scan test system comprising: a semiconductor device including a scan register connected between an input/output pin on an analog input side and an internal system logic; a...
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6839397 |
Circuit configuration for generating control signals for testing high-frequency synchronous digital circuits
A circuit configuration for generating control signals for testing high-frequency synchronous digital circuits, especially memory chips, is described. A p-stage shift register which is clocked at a...
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6828817 |
Testing device included in the electrooptic device
The invention provides an electrooptic device and an electronic apparatus, in which the electrical characteristics of many thin-film switching elements formed in a substrate to support an...
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6617610 |
Semiconductor integrated circuit
In a dynamic-type semiconductor integrated circuit in which precharge and evaluation operations are preformed per cycle, an IDDQ test and a light detection test can be conducted during an...
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6453250 |
Method and apparatus for detection of missing pulses from a pulse train
A method and apparatus for detection of missing pulses from a repetitive pulse train including signal detection circuits for capturing the rising and/or falling edges of an input signal,...
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6385273 |
Device for testing clock pulse generating circuit
A testing device for checking a clock signal generated by a clock pulse generating circuit. The clock pulse generating circuit outputs a clock signal and a multiplied clock second signal. The...
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6385272 |
Method of counting microorganisms and device for accomplishing the counting
A filter on which living bacteria are captured is processed with an extraction reagent and a luminescence reagent. The state of luminescence of the filter is photographed by a television camera 1...
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6333958 |
Advanced electronics for faster time-correlation analysis of pulse sequences
This invention relates to a method and apparatus for improving the precision of at least one of neutron coincidence counting and neutron multiplicity counting. The method includes the steps of: (1)...
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6330297 |
Semiconductor integrated circuit device capable of reading out chip-specific information during testing and evaluation
A semiconductor integrated circuit device has a data holding section for storing information, a counter for counting the number of externally applied pulses, and a comparison/verification section....
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6285730 |
Dust/particle monitor
The invention relates to dust/particle monitors, and particularly but not necessarily exclusively to a method of monitoring fine particles harmful to humans in working environments. Equipment and...
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6188742 |
Event counter and method for driving a circuit device
An event counter is disclosed which, in one embodiment, provides a reaction timer to time a user's response time to an event. In a second embodiment, the event counter provides a counting device to...
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5937023 |
Method and circuit for detecting small variations in capacity via delay accumulation
The present invention relates to a method for detecting a minor variation of capacity via accumulation and a circuit for detecting the same. An oscillated pulse signal is generated by a delay...
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5586130 |
Method and apparatus for detecting fault conditions in a vehicle data recording device to detect tampering or unauthorized access
A system and method for detecting fault conditions within a vehicle recording device are disclosed herein. The fault detection technique may be implemented in a vehicle in which are incorporated...
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5309087 |
Air core gauge, multi-frequency pulse width modulator system therefor
A pulse-width modulation system provides means for controlling dual-coil, air-core gauges at a various rates over 360 degrees. The system moves a dial needle from one octant of the gauge to the...
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5293774 |
Shaft breakage detection apparatus
Sensors are provided for monitoring the speeds of a turbine and a compressor interconnected by a shaft. Signals from the sensors are used to control the direction of counting of a counter. If the...
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5245873 |
Capacitance-type material level indicator and method of operation
A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a...
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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...
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5191295 |
Phase shift vernier for automatic test systems
A phase shift vernier for providing an output signal with continuously variable delay based on an input phase delay is disclosed. The apparatus comprises delay value means, a ring oscillator, a...
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5185709 |
Apparatus and method for measuring pressure changes within pressure vessels
Apparatus and methods for detecting pressure changes within the chamber of a pressure vessel are disclosed. The apparatus includes a pressure transducer which is gauge-referenced to atmospheric...
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5123034 |
Automatic anomalous event detection
An automatic anomalous event detection method uses a pair of counters to count the occurrence of main triggers simultaneously with the occurrence of advanced triggers indicative of anomalous events...
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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...
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5107439 |
Continuous overlapping frequency measurement
Method and apparatus for frequency measurement of an undulating signal with a time varying frequency. A sequence of consecutive time intervals T 1 , T 2 , T 3 , T 4 , T 5 , etc. is determined, and...
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5095264 |
Frequency counter and method of counting frequency of a signal to minimize effects of duty cycle modulation
A dual-edge frequency counter and method for minimizing the effects of duty cycle modulation. In its simplest form, a dual-edge counter (50) includes a first counter (52) that accumulates reference...
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5095263 |
Anti-aliasing for frequency output sensors
A technique for reducing the effects of aliasing in a frequency output sensor system. The system includes a sensor for producing a sensor output signal at a frequency that varies within a...
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5089770 |
Frequency measuring system
The disclosure is of a system for measuring the frequency of an audio signal by converting the signal to a rectangular wave, counting the number of oscillator pulses which can be generated during...
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5012673 |
Method and apparatus for detecting a rotation angle
A measurement range is divided into a plurality of sections, a binary coded signal is generated at each division point, small section signals are generated at a predetermined interval between the...
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4982109 |
Circuit and method for measuring the duration of a selected pulse in a pulse train
A method of measuring the duration of a selected pulse in a pulse train produces a pulse count enable logic signal in response to a start pulse to enable a first down counter to count transition...
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4968899 |
Clock signal switching device of an IC Card
When an IC card is attached to a terminal unit, a counter counts pulses of an external clock signal and a switching circuit outputs the external clock signal to an internal circuit in place of an...
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4965817 |
Device for the measurement of an event
A device for the measurement of an event or occurrence, including a summing counter which is actuated from a divider circuit. The device includes a divider circuit constituted of a series circuit...
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4922447 |
Device for measuring the distance travelled and the speed of a rail vehicle
A device for measuring the distance travelled by and the speed of a rail vehicle fitted with wheel-coupled distance-pulse generators is disclosed in which both distance and speed are calculated...
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4905261 |
Defrosting grid system testing apparatus
A window defrosting grid testing apparatus which is automated to test the resistance grid for quality control relative to set automotive standards including the continuity of each line of the grid....
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4896339 |
Material testing machine
A material testing machine includes two detecting means of indenter pressing force detecting means provided with a displacement detector or a strain gage type detector and amount of penetration...
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4888989 |
Level sensor system
A level sensor system for liquids and liquid slurries utilizes a capacitive probe which extends longitudinally into a liquid or liquid slurry containing vessel, and which may contain inner and...
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4872124 |
Length measuring device
At the start of measurement by a length measuring device, a calibration coil in which the temperature characteristics are known, is connected to an oscillator. The oscillation frequency of the...
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4862486 |
Revolution counter attached to tires
A method and apparatus for the determination of automobile and truck tire revolutions wherein said apparatus adhered to the tire detects each revolution by the flexing of that section of the tire.
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4847878 |
Method and apparatus for determining mirror position in a fourier-transform infrared spectrometer
The position of the moving mirror (20) in a Fourier-transform infrared spectrometer is monitored with a circuit which has an incremental counter formed of a plurality of cascaded up/down counters...
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4811368 |
Meter for remote inspection
A meter for remote inspection having a wheel assembly which enables a counting number indicating the amount of consumption of a measuring object, such as electric energy, or city water or the like...
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4786861 |
Frequency counting apparatus and method
A device and method for measuring the frequency of an input signal by measuring the number of cycles of the input signal that occur in a sample interval between successive sampling times t n . An...
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4698830 |
Shift register latch arrangement for enhanced testability in differential cascode voltage switch circuit
A shift register latch (SRL) arrangement for testing a combinational logic circuit, producing true and complement outputs in nature, has two clocked DC latches and additional circuitry for...
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4675660 |
Container liquid level sensing utilizing a filling tube
Procedure to measure the level (14) of a liquid (13) by means of elastic waves, such liquid (13) being contained within an axially moving tube (11) and cooperating with a filler tube (12), the...
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