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7620512 |
Determining a time base for a microcontroller
The invention relates to a method for producing a time base for a microcontroller and a simple circuit arrangement therefor, which comprises an RC-element having a specific time constant, said...
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7616011 |
Detection apparatus for a capacitive proximity sensor
A switched capacitance detection circuit is responsive to changes in the fringing capacitance of a capacitive proximity sensor having at least one capacitive sensor element. In cases where the...
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7609076 |
Method of measuring characteristic impedance of electrostatic discharge protecting circuit and apparatus for realizing the same
A method of quickly measuring a characteristic impedance of an ESD protecting circuit by applying a discharge voltage to the ESD protecting circuit, includes the steps of measuring a variation in...
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7602195 |
Single pin multi-state identifier using RC timing element
In a circuit identifier, an electrical circuit includes an output node to output an electrical signal. A resistor device and a capacitor device, electrically in series with the resistor device,...
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7595648 |
Device and method for reading a capacitive sensor, in particular of a micro-electromechanical type
A read device of a capacitive sensor includes: a signal source supplying an electrical read signal for driving the capacitive sensor; and a discrete-time sense circuit for generating an electrical...
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7577044 |
Resistive memory element sensing using averaging
A system for determining the logic state of a resistive memory cell element, for example an MRAM resistive cell element. The system includes a controlled voltage supply, an electronic charge...
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7567891 |
Hot-carrier device degradation modeling and extraction methodologies
The present invention is directed to a number of improvements in methods for hot-carrier device degradation modeling and extraction. Several improvements are presented for the improvement of...
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7550945 |
Voltage measurement device
A voltage measurement device includes: a charging circuit 100 having a first switch group of semiconductor elements P 1 , P 2 for connecting voltages of respective blocks, into which a plurality...
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7545289 |
Capacitive sensing using a repeated pattern of sensing elements
A repeated pattern of sensing elements can be used to indicate an unambiguous position along an axis in a sensing region. For example, different-sized sensing elements can be arranged in a...
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7541889 |
Pulse coupling apparatus, systems, and methods
Apparatus and systems, as well as methods for using them, may include launching a pulse into an input port of a quarter-wave directional coupler having an thru port and an isolated port, and...
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7541816 |
Capacitive sensor
In a capacitive sensor, a sensing electrode is positively charged, the sensing electrode and a sensing capacitor are charge-balanced, the sensing electrode is negatively charged, and then the...
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7520956 |
On-wafer monitoring system
An on-wafer monitoring system is placed at a position of a substrate to be treated in a plasma treatment device. The on-wafer monitoring system includes various sensors, a data I/O unit for...
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7486086 |
Method for measuring intrinsic capacitance of a metal oxide semiconductor (MOS) device
A method for measuring intrinsic capacitance of a MOS device is provided. The MOS device includes a first terminal, a second terminal, a third terminal and a fourth terminal. First, provide a first...
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7479791 |
Circuit arrangement for a capacitive proximity switch
Disclosed is a charge transfer-based circuit arrangement for capacitive proximity switches comprising a capacitive sensor element (C 3 ), the capacity of which changes according to the actuation...
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7449895 |
Methods and systems for detecting a capacitance using switched charge transfer techniques
Methods, systems and devices are described for detecting a measurable capacitance using charge transfer techniques. According to various embodiments, a charge transfer process is performed for two...
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7403020 |
Method and device for measuring capacitances
For measuring unknown capacitances, which exist in capacitive sensors, such as pressure, moisture, inclination sensors and the like, the invention proposes a capacitance measurement method, in...
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7385404 |
Arrangement and method for testing a capacitance array in an integrated circuit
An arrangement for testing a plurality of capacitances in a capacitance array of an integrated circuit includes a power supply and a means for cyclically charging and discharging at least one of...
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7382140 |
Method and device for flame monitoring
A capacitor connected to a voltage source is charged during a charging phase up to a voltage value, and during a discharging phase the capacitor is discharged via a coupling element connected to...
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7372717 |
Methods for resistive memory element sensing using averaging
A system for determining the logic state of a resistive memory cell element, for example an MRAM resistive cell element. The system includes a controlled voltage supply, an electronic charge...
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7368923 |
Time interval trimmed differential capacitance sensor
An apparatus and method for operation of a differential capacitance transducer, including generating substantially opposing polarity excitation drive signals by operation of a pair of drive signal...
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7324029 |
Capacitance-to-digital interface circuit for differential pressure sensor
A two phase, second order capacitance-to-digital (CD) modulator includes a first stage sigma-delta integrator that forms charge packets as a function of sensor capacitance during an auto-zero phase...
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7319421 |
Foldback free capacitance-to-digital modulator
A capacitance-to-digital (CD) modulator converts capacitance of a differential pressure sensor to a pulse code modulation output signal. The first stage of the CD modulator is a sigma-delta...
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7312616 |
Successive approximate capacitance measurement circuit
A capacitance measurement circuit includes a current source, a switch, and a comparator. The current source is coupled to drive a current through a circuit node. The switch is coupled to the...
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7307485 |
Capacitance sensor using relaxation oscillators
An apparatus that may be used to sense capacitance, as well as other functions. The apparatus includes a comparator circuit with hysteresis, a capacitor, and a current driver. The comparator...
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7288946 |
Methods and systems for detecting a capacitance using sigma-delta measurement techniques
Methods, systems and devices are described for detecting a measurable capacitance using sigma-delta measurement techniques. According to various embodiments, a voltage is applied to the measurable...
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7260796 |
Capacitance measurements for an integrated circuit
A method and apparatus for determining capacitance of wires in an integrated circuit is described. The capacitance information derived according to the invention can be used, for example, to...
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7259573 |
Surface capacitance sensor system using buried stimulus electrode
A surface capacitance sensor system is implemented as an array of sensor electrodes near the surface of the integrated circuit and an array of stimulus electrodes below the sensor electrodes. Rows...
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7256714 |
Keyboard with reduced keying ambiguity
When an array of proximity sensors is used as a keyboard, it can provide an ambiguous output if a user's finger overlaps several keys or if liquid is spilled on the keyboard. This ambiguity is...
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7239165 |
Pulse transport apparatus, systems, and methods
Apparatus and systems, as well as methods and articles, may operate to transmit an initial pulse to a directional coupler, where the initial pulse has an initial amplitude and a timed overshoot of...
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7236113 |
Capacitance-to-digital modulator with sensor failure-mode detection
A pressure transmitter having a capacitance-to-digital modulator produces an output as a function of sensor capacitance and a reference capacitance. Transmitter also includes a sensor failure mode...
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7196528 |
Electrostatic capacitance detection device
An electrostatic capacitance detection device including an electrostatic capacitance detection element arranged in a matrix form; a row line arranged in each row for selecting a relevant...
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7173438 |
Measuring capacitance
A method for determining capacitance includes alternately charging a capacitor to a first voltage and discharging the capacitor to a second voltage, generating an output signal having a frequency...
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7148697 |
System and method for measuring electrical characteristics of a capacitor
Disclosed are a system and method for measuring electrical characteristics of a capacitor. A measurement assembly can include a constant current assembly for selectively charging and discharging...
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7145350 |
Process and a circuit arrangement for evaluating a measuring capacitance
A process is disclosed for evaluating a measuring device comprising a capacitor (CM), with stages for charging the capacitor (CM) over an initial charging period (tk 1 , tk 2 ) and for determining...
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7129714 |
Capacitive measurement system
Sensor circuits for the measurement of small variations in the value of a sensing capacitor. An alternating voltage excites the sensing capacitor a predetermined frequency whereby the voltage on...
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7129712 |
Attofarad capacitance measurement
An electrical circuit for determining a capacitance is described. The electrical circuit includes a first device, a rectifying circuit and a feedback circuit. The first device has a first terminal...
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7106073 |
Method and system for area efficient charge-based capacitance measurement
The present invention is directed to a system for area efficient charge-based capacitance measurement requiring a minimum silicon area for probe pads. A structure block for the system includes...
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7102378 |
Testing apparatus and method for thin film transistor display array
A testing circuit and method for thin film transistor display array, for testing the yield of a thin film transistor array is provided. The testing circuit includes an array tester, a test panel...
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7098675 |
Capacitance change detection device
A capacitance change detection device includes a sensor electrode, and an electrode capacitance measurement device for measuring capacitance of the sensor electrode on the basis of a correlation...
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7084644 |
Circuit arrangement for capacitive humidity measurement and method for operating the same
A circuit arrangement for capacitive humidity measurement that includes a capacitive element to be measured, a plurality of switch elements, a charge storage element and a control unit electrically...
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7071711 |
Method and device for determining the ratio between an RC time constant in an integrated circuit and a set value
A method and device for determining the ratio between the actual value of an RC time constant of an RC network embodied in an integrated circuit and a set value of the RC time constant includes...
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7071709 |
Circuit for detecting capacitance change in variable capacitance
A capacitance of a capacitor member, which varies according to a dynamic force such as an acceleration force imposed on the capacitor member, is detected by a detecting circuit. The detecting...
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7058305 |
Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system
An optical submarine communication system has a land cable connected to a terminal apparatus which is installed on land near the seashore for transmitting an optical signal and electric power. The...
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7053632 |
Circuit and method for predicting dead time
A circuit for predicting the dead time is provided. The circuit includes a plurality of integrators, a plurality of comparators, and a logic circuit. Based on a reference signal provided...
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7046017 |
Full-wave rectifier for capacitance measurements
One embodiment of the present invention provides an electronic circuit and method for measuring a capacitance. A signal generating mechanism generates a signal having a predefined frequency and...
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7046016 |
Potential fixing device, potential fixing method, and capacitance measuring instrument
An electric potential fixing apparatus is provided that can prevent the combined total amount of electricity of a connection line between the first capacitance and the second capacitance from...
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7034552 |
Operator sensing circuit for disabling motor of power equipment
A calibrated operator-sensing circuit having a microcontroller that commands a charge-transfer sensor to send a sensor charge signal to a capacitive sensing electrode. The sensor receives a...
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7015705 |
Capacitance detection apparatus
A capacitance detection apparatus includes a first open/close switch provided between both ends of a standard capacitor, one end of the standard capacitor being connected to a first voltage source,...
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7005843 |
Position indicator and position detector
A position indicator includes a time-constant circuit having an element whose characteristic continuously varies in response to operation represented as a continuous quantity such as writing force,...
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6985556 |
Proximity detector and radiography system
Certain embodiments of the present invention provide a proximity detector having a simple configuration and an imaging system including the proximity detector. In an embodiment, a proximity...
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