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7414517 Radio frequency identification transponder  
A radio frequency identification transponder includes a power supply and a dynamic memory array that stores data. When power from the power supply ceases, the data in the dynamic memory array is...
7173882 Methods and systems for performing horological functions using time cells  
A simple electronic horological device, termed a time cell, is presented with associated methods, systems, and computer program products. A time cell has an insulated, charge storage element that...
7021068 Refrigerator having power outage duration feature  
Methods and apparatus for monitoring power outages in a household appliance such as a refrigerator are disclosed. According to the method, a household appliance determines a prior occurrence of a...
6950375 Multi-phase clock time stamping  
Multi-phase clock time stamping for improving time stamp resolution is provided. One of many possible embodiments is a method for generating a time stamp having an improved time resolution for an...
6931338 System for providing a calibrated path for multi-signal cables in testing of integrated circuits  
A system for calibrating cables attached to a time measurement device is disclosed. The system includes a calibration device that generates a plurality of synchronized measurement signals that are...
6909672 Time-to-voltage converter  
A time interval to voltage converter with very low nonlinearity for time stamping events. The converter automatically selects one of two clocks related to a reference clock and ensures that the...
6856581 Batteryless, oscillatorless, binary time cell usable as an horological device with associated programming methods and devices  
A simple electronic horological device, termed a time cell, is presented with associated methods, systems, and computer program products. A time cell has an insulated, charge storage element that...
6831879 Batteryless, osciliatorless, analog time cell usable as an horological device with associated programming methods and devices  
A simple electronic horological device, termed a time cell, is presented with associated methods, systems, and computer program products. A time cell has an insulated, charge storage element that...
6829200 Sensing methods and devices for a batteryless, oscillatorless, binary time cell usable as an horological device  
A simple electronic horological device, termed a time cell, is presented with associated methods, systems, and computer program products. A time cell has an insulated, charge storage element that...
6701280 System and method to provide measurement capabilities for both single-ended and differential signals with software switching  
Improved input circuitry for use in conjunction with measurement devices is disclosed. The subject input circuitry enables a single measurement device to take measurements on both single-ended and...
6657706 Method and apparatus for resolving relative times-of-arrival of light pulses  
A method and apparatus for resolving relative times-of-arrival of a plurality of light pulses includes a plurality of drift-field detectors. Each drift-field detector includes a light sensor and a...
6621767 Time interval analyzer having real time counter  
A time interval analyzer for measuring time intervals between events in an input signal includes a trigger circuit that receives the input signal and that outputs a time trigger signal at a first...
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...
6498770 Timer circuit utilizing thermal effect  
A timer circuit that utilizes the thermal runaway effect, and includes a switch, a resistor, a transistor and a protective device. The temperature of the transistor rises due to a phenomenon known...
6364503 Illuminated memorial assembly  
A illuminated memorial assembly for providing a substantially continual illumination at a memorial site. The illuminated memorial assembly includes a housing. The housing has a bottom portion and a...
6181649 Time interval analyzer having current boost  
A time interval analyzer for measuring time intervals between events in an input signal includes a trigger circuit that receives an input signal and that outputs a trigger signal at a triggering...
6091671 Time interval analyzer having interpolator with constant current capacitor control  
A time interval analyzer for measuring time intervals between events in an input signal includes a trigger circuit that receives an input signal and that outputs a trigger signal at a triggering...
5901114 Circuit for measuring the cut-off time of an electronic system  
A circuit for measuring the duration of a cut-off period in the power supply to an electronic system, for example the control system of a motor vehicle starter, comprises a voltage splitting bridge...
5870352 DC monitor for active device speed  
Methods and circuits to measure the speed of silicon test structures using direct current test equipment. Each test structure comprises an oscillator and a detector. Oscillations started by a...
5790480 Delta-T measurement circuit  
A method and apparatus for measuring very short time periods, or differences between two events, such as the delta-T between a trigger point on a waveform and a sampling clock edge of a digital...
5500834 Device for measuring time lapse after turn off of power source and method thereof  
While the electric power source is turned on, capacitor 1 is charged to a voltage EO by a direct current constant voltage supplier through transistor 4. When the electric power is disconnected,...
5122996 Real-time, uninterrupted time-interval to voltage converter  
A method and apparatus performs time-interval to voltage conversion immediately and continuously allowing timing variations to be viewed and correlated with other voltage signals displayed on an...
5021895 Method and magnetic head for recording signals magnetically  
A method of recording signals on a magnetic medium, in which a first magnetic head (1) blanks a wide track by recording signals at a first azimuth angle and a second magnetic head (2) records a...
4982350 System for precise measurement of time intervals  
An integrated system for precise measurement of time intervals wherein a high resolution and accuracy can be achieved through the implementation of an interpolation function and a self calibration...
4879647 Watchdog timer circuit suited for use in microcomputer  
A watchdog timer circuit employed in a microcomputer is disclosed. The watchdog timer circuit detects the occurrence of a program abnormal termination or an infinite loop operation and includes a...
4870629 Method for electronic calibration of a voltage-to-time converter  
A method of calibration for a voltage to time converter in order to increment delays by a fraction of a clock cycle known as an interpolator period is disclosed. The method of calibration compares...
4769798 Successive period-to-voltage converting apparatus  
An apparatus which successively converts the period defined by successive two pulses of a series of input pulses into a voltage, and in which fractional times between input pulses and clock pulses...
4504155 Time-to-voltage converter  
A constant current source is provided to charge a reference capacitor. The current is switched to the capacitor by a first high-speed analog switch when a first event occurs and the current is...
4394090 Process timing apparatus  
An indicating electronic timer useful for timing processing events and for controlling a process measures the elapsed time from a moment at which a process variable attains a predetermined value...
4367957 Time-lapse indicator or the like  
A time-lapse indicator in which a receptacle contains a fluid material having numerous discrete particles dispersed in a liquid carrier, and a layer of absorbent material in close proximity to the...
4301360 Time interval meter  
A time interval meter for measuring extremely short time intervals includes a timing circuit operable at a fast predetermined rate over the time interval between first and second events, and...
4277745 Personal electric field exposure monitor  
A low frequency electric field exposure monitor integrates personal exposure to an electric field into intervals of electric field intensity.
4234845 Automatic control of arming signal for time interval measurements  
Both positive and negative time interval measurements between start and stop channel signals are made without ambiguity during repetitive measurements. Circuitry monitors the start and stop channel...
4129829 Chronograph  
An apparatus for measuring velocity of a bullet is shown. A portable clamping device securely holds the barrel of a gun in position during firing. A bullet fired from the gun is projected through...
4082642 Measuring arrangement  
A measuring method or arrangement for the quick, accurate, and safe measurement of electrical parameters of binders for the electrocoating process is described. According to the arrangement,...
4050025 Apparatus for obtaining a mean voltage value  
Apparatus comprising a measurement-transmitting unit with two outputs to generate a time sequence of voltage values containing a measured size to be averaged; a mean value-forming unit which has...
3961258 Pulse time interval measuring system  
A pulse time interval measuring system in which a desired input signal is selected from among a plurality of input signals each consisting of a plurality of pulse signals, and the time interval...
3790890 DEVICE FOR MEASURING A TIME INTERVAL  
Device for measuring a time interval which comprises a capacitor which is charged during a first time interval and is discharged during a second time interval and also comprises two resistors which...
3781677 VARIABLE RATE MEASURING DEVICE  
A variable rate measuring device is provided for accurately measuring the rate in which a series of input signals are provided. The device operates by means of an energy storage RC network which is...
3761805 METHODS OF AND SYSTEMS FOR MEASURING CAPACITANCE USING A CONSTANT CURRENT CHARGING TECHNIQUE  
In a constant current charging tenchique for measuring capacitance, a constant current is supplied to a capacitance to be measured and a voltage ramp is produced. Two voltage-level detectors sense...
3731195 PULSE DURATION MEASURING ARRANGEMENT  
To convert the duration of single sequentially occurring pulses to proportional continuous current characteristic, for example voltage or current, a capacitor is charged by a constant current...
3582678 PULSE INTERVAL MEASUREMENT APPARATUS  
First and second transistor switching pairs are connected to receive first and second pulses respectively. Each switching pair is biased to respond only when the instantaneous value of the...
3545528 APPARATUS FOR DETERMINING TRAVEL TIME OF MOVING MATERIAL  
3543108 SYSTEM FOR MEASURING THE TIME INTERVAL BETWEEN TWO NON-REPETITIVE PULSES  
3492424 TIME INTERVAL DIVIDER  
3492565 APPARATUS FOR MEASURING THE TIME INTERVAL BETWEEN OPENING OR CLOSING OF A PAIR OF SEQUENTIALLY OPERATED CONTACTS  
3478348 ANALOGUE TO DIGITAL CONVERTER  
3443227 APPARATUS FOR INDICATING THE TRANSIENT RESPONSE OF CIRCUIT ELEMENTS  
3437834 CIRCUIT FOR DETECTING TIME OF OCCURRENCE OF SIGNALS HAVING AN AMPLITUDE WHICH EXCEEDS A PREDETERMINED LEVEL  
3413544 Time interval measuring device  
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