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Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
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| Number | Title | Issue Date |
| 8134375 | Capacitive MEMS sensor device The present invention relates to a capacitive MEMS sensor device for sensing a mechanical quantity. To provide such a capacitive MEMS sensor device which enables fast recovery from (near) sticking after a mechanical overload situation it is proposed that the sensor ... | 03/13/2012 |
| 8125232 | Capacitive sensing device and method In a capacitive sensing device for detecting a change in capacitance of an electrode which is caused by contact with a human body, the improvement of determination speed may be enabled. M (m is an integer satisfying n≧m≧2) electrodes are selected from n (n is an... | 02/28/2012 |
| 8111076 | Method and apparatus for determination of plant canopy rehydration rate and magnitude of plant canopy water storage This invention is concerned with a method for measuring the canopy rehydration pulse during the period of water application. During the rehydration process water leaks from the trunk xylem tubes into the sapwood extraxyllary region. A water content sensor in this re... | 02/07/2012 |
| 7986154 | Capacitive sensing slide detection A circuit includes a first capacitor having first and second capacitive sensing strips positioned on first and second sliding portions of the slider type mobile device. In the closed position, the first and second capacitive sensing strips overlap one another and in... | 07/26/2011 |
| 7880479 | Capacitive sensor with alternating current power immunity A capacitive sensor includes a sensing electrode, control unit, first and second comparator wherein the sensing electrode includes a first and a second conductors. A positive input terminal of the first comparator and a negative input terminal of the second comparat... | 02/01/2011 |
| 7830159 | Capacitor mismatch measurement method for switched capacitor circuits A method for calibrating a capacitor mismatch error between a sampling capacitor and a feedback capacitor in a switched capacitor circuit includes sampling a fixed input voltage onto the sampling capacitor during a sampling phase of the switched capacitor circuit; p... | 11/09/2010 |
| 7724001 | Capacitance sensing circuit A circuit that senses a process variable includes a voltage divider that includes first and second capacitances. At least one of the capacitances is varied by the process variable. Divider ends receive modulated potentials, and a divider center tap coupled to a dete... | 05/25/2010 |
| 7656169 | Capacitive occupant detection system A capacitive occupant detection system has an oscillator and an electrode operatively coupled to the oscillator, to which the oscillator applies an oscillating voltage signal. In response to the oscillating voltage being applied, an electric current is caused to flo... | 02/02/2010 |
| 7592819 | Microprocessor-based capacitance measurement An improved system and method of performing capacitance measurements that provides a fast digital response and a reduced output error. The capacitance measurement system includes a circuit configuration that has a variable capacitor and at least one reference capaci... | 09/22/2009 |
| 7525322 | Capacitive physical quantity sensor and diagnosis method A capacitive sensor for detecting a physical quantity includes a sensor element and a detecting circuit. The sensor element includes a movable electrode and a fixed electrode. A periodic voltage is applied to the fixed electrode. A high-voltage generating circuit ap... | 04/28/2009 |
| 7518381 | Touch sensor system and method A touch sensor assembly. The touch sensor assembly may include a housing, at least one touch sensor and a sensor cover. The sensor cover may identify a touch area associated with each touch sensor. The housing may form a water tight cavity for the sensor cover and t... | 04/14/2009 |
| 7501836 | Apparatus and method for determining capacitance variation in an integrated circuit An apparatus for determining capacitance variation in an integrated circuit, includes at least two capacitances, a stimulus provided to the at least two capacitances, and a first logic element coupled to the stimulus and the at least two capacitances, the first logi... | 03/10/2009 |
| 7411406 | Power supply with current measurement circuit for transformer with high frequency output A current measurement circuit to measure the output of a power supply transformer includes a simulation capacitor having a capacitance proportional to a parasitic capacitance of the transformer. The first electrode of the capacitor is coupled to an output winding of... | 08/12/2008 |
| 7403021 | Testing circuit for a data interface A testing circuit for an interface includes a load feeding circuit and a voltage testing circuit. The load feeding circuit includes a resistance-regulating unit, a first comparator, a pass element, and a capacitor. The resistance-regulating unit is connected to a po... | 07/22/2008 |
| 7375535 | Scan method and topology for capacitive sensing A capacitive sensing system (100) can connect groups of capacitive sensors (112-1 to 112-N) to a common node (106) to detect change in capacitance. States of a set of capacitive sensors (112-1 to 112-N) can thu... | 05/20/2008 |
| 7362796 | Signal relay circuit for securing amplitude of voltage of transmitting signals In a signal relay circuit according to the present invention, while a capacitor serves to pass an AC component of a digital signal having a first potential level and a second potential level higher than the first potential level, a first resistor and a second resist... | 04/22/2008 |
| 7337671 | Capacitive microaccelerometers and fabrication methods Disclosed are moveable microstructures comprising in-plane capacitive microaccelerometers, with submicro-gravity resolution (17 pF/g). The microstructures are fabricated in thick (>100 μm) silicon-on-insulator (SOI) substr... | 03/04/2008 |
| 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 and integrates the packets during an integration phase to produce an... | 01/29/2008 |
| 7323886 | Linear capacitance measurement and touchless switch Capacitance measurement apparatus that enhances the sensitivity and accuracy of capacitive transducers, proximity sensors, and touchless switches. Each of two capacitors (C1, C2) under measurement has one end connected to ground and is kept at substant... | 01/29/2008 |
| 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 integrator having an auto-zero capacitor connected between an integrator inp... | 01/15/2008 |
| 7304483 | One terminal capacitor interface circuit A differential capacitor one terminal capacitor interface circuit for sensing the capacitance of first and second capacitors includes a differential integrating amplifier having first and second summing nodes and an input common mode voltage; and a switching circuit... | 12/04/2007 |
| 7301350 | 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 capacitance using a first switch. The measurable capacitance is allow... | 11/27/2007 |
| 7288945 | Systems and methods for detection of dielectric change in material and structure Methods and systems are described for efficiently detecting an object. The system includes at least one electrode for measuring a displacement current. The at least one electrode is coupled to a floating ground configuration provided by an op-amp, where the invertin... | 10/30/2007 |
| 7239152 | Methods for measuring parasitic capacitance and inductance of I/O leads on an electrical component using a network analyzer Apparatus and methods are provided for measuring the potential for mutual coupling in an integrated circuit package of any type or configuration using a network analyzer in conjunction with a coaxial test probe. Simple, low-cost test fixturing and methods of testing... | 07/03/2007 |
| 7235983 | One terminal capacitor interface circuit A one terminal capacitor interface circuit for sensing the capacitance of a capacitor includes a differential integrating amplifier having an input common mode voltage and two summing nodes whose voltage is substantially equal to the input common mode voltage, a swi... | 06/26/2007 |
| 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 detector produces an output signal and identifies failure modes of th... | 06/26/2007 |
| 7230435 | Capacitance measurement circuit A CBCM circuit is capable of separately measuring each component of a measuring target capacitance. A node (N1) is electrically connected to a terminal (P2) between the drains of PMOS and NMOS transistors (MP2, MN2). As a target capacitan... | 06/12/2007 |
| 7228739 | Precision flexure plate A precision flexure plate includes a flat disk positioned between two capacitor plates and supported by S-shaped beams. Deflection of the disk due to gravitational loads and resulting capacitance change is used to measure the accelerations in the direction perpendic... | 06/12/2007 |
| 7199593 | Apparatus and methods for measuring parasitic capacitance and inductance of I/O leads on an electrical component using a network analyzer Apparatus and methods are provided for measuring the potential for mutual coupling in an integrated circuit package of any type or configuration using a network analyzer in conjunction with a coaxial test probe. Simple, low-cost test fixturing and methods of testing... | 04/03/2007 |
| 7183174 | Flash memory device and method of manufacturing the same A flash memory device and method of manufacturing the same. The flash memory device includes a semiconductor substrate in which a first region where a cell region is formed, a second region where a peripheral region is formed, and a third region formed in the periph... | 02/27/2007 |
| 7183777 | Integrated capacitive sensor system for the measurement of resistivity and dielectric constant in geophysical, environmental, groundwater and related applications The invention relates to a capacitive sensor system for measuring environmental parameters by activating a capacitive array and causing fringe electric fields to intersect the surrounding environment. An oscillator is coupled to the capacitive array and the frequenc... | 02/27/2007 |
| 7180306 | Automotive systems An occupant detection system includes a weight sensor and an electric field sensor, each operatively coupled to a seat. The electric field sensor generates an electric field from at least one electrode in the bottom of the seat, provides for generating a response to... | 02/20/2007 |
| 7173558 | Charge comparator with low input offset A Direct Current (DC) charge comparator that provides low input offset by feeding complimentary plus and minus charge inputs to a single amplification path via an alternate input path switch. Multiple sample and hold circuits at the output of the amplification path ... | 02/06/2007 |
| 7158012 | Non-invasive powerline communications system A non-invasive powerline communications system includes: means for generating communication signals at a first location for transmission on a powerline; means for reactively coupling the communication signals to the powerline; and means for receiving said communicat... | 01/02/2007 |
| 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 (tk1, tk2) and for determining the capacitance charge as an initial measured value (tml). ... | 12/05/2006 |
| 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 the sensing capacitor reverses polarity. This voltage on the sensing ca... | 10/31/2006 |
| 7124634 | Single plate capacitive acceleration derivative detector A capacitance accelerometer includes a housing, and a plate fixed within the housing. A moveable plate is disposed in substantially parallel relation to the fixed plate and is coupled to the housing along at least an edge. The moveable plate and the fixed plate defi... | 10/24/2006 |
| 7119550 | Capacitance difference detecting circuit and MEMS sensor Oscillators have capacitors, respectively, whose capacitances change according to an external force and generate first oscillating signals according to the capacitances. Each of the capacitors is disposed, for example, between a substrate and a mass body that is mov... | 10/10/2006 |
| 7119555 | Circuit for detecting difference in capacitance A circuit for detecting a difference in capacitance between a first capacitor and a second capacitor provided in a sensor includes an oscillator configured to generate an oscillating signal, a phase comparator coupled to the oscillator to output a signal responsive ... | 10/10/2006 |
| 7116091 | Ratiometric stud sensing A stud or joist sensor device and associated sensing method using a ratio of capacitance measurements from a plurality of capacitive sensing elements. The device locates a feature of an object or discontinuity behind a surface or wall, such as an edge and/or a cente... | 10/03/2006 |
