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| Number | Title | Issue Date |
| 8188754 | Method and apparatus for sensing capacitance value and converting it into digital format A capacitive sensing system are configured to sense a capacitance value and convert the sensed capacitance value to a digital format. The capacitive sensing system provides good selectivity and immunity to noise and interference, which can be further enhanced by ena... | 05/29/2012 |
| 8154309 | Configurable PSRO structure for measuring frequency dependent capacitive loads A configurable PSRO measurement circuit is used to measure the frequency dependent capacitance of a target through silicon via (TSV) or other conductive structure. Measurements of the target structure are aided by using adjustable resistors and a de-embedding struct... | 04/10/2012 |
| 7944216 | Capacitance sensor A capacitance sensor, having at least one electrode is disclosed. A frequency spread signal generation circuit is coupled to the at least one electrode to apply a frequency spread signal based on a spread sequence. A periodic signal with a frequency is coupled to th... | 05/17/2011 |
| 7944217 | Object proximity detector and object position detector The present invention offers an object proximity detector and object position detector. The variation of frequency of an oscillator is used to detect the proximity of an object to a sensor plate. The dependence of the sensitivity of the detector on the area of the s... | 05/17/2011 |
| 7880480 | Occupant detection system and method for calibrating A method includes measuring a first frequency response of an electrode at a first frequency across a range of environmental conditions, measuring a second frequency response of the electrode at a second frequency across the range of environmental conditions, and com... | 02/01/2011 |
| 7876106 | System and method for detecting an object at a location An occupancy detection system includes a signal generator coupled to an electrode, the signal generator configured to output a first signal at a first frequency and a second signal at a second frequency. The system further includes a voltage detection circuit connec... | 01/25/2011 |
| 7876107 | Obstacle detection system and obstacle detection method thereof An obstacle detection system includes a static capacitance detection module including a sensor strip for detecting a static capacitance, an RF oscillator connected to the sensor strip, a phase lock loop section for maintaining the oscillation frequency of the RF osc... | 01/25/2011 |
| 7791357 | On silicon interconnect capacitance extraction The present invention relates to a on-chip circuit for on silicon interconnect capacitance (Cx) extraction that is self compensated for process variations in the integrated transistors. The circuit (10) comprises signal generation means (20) for genera... | 09/07/2010 |
| 7652488 | Method for measuring the health of solid rocket propellant using an embedded sensor The invented method for measuring the health of a solid rocket propellant includes embedding at least one piezoelectric capacitance sensor in the propellant, where the capacitance of the sensor is a function of a modulus of the propellant, and where the position is ... | 01/26/2010 |
| 7619421 | Systems and methods for detecting capacitor process variation A method for detecting capacitor variation in a device comprises operating an oscillator in the device, the oscillator being an Inductive-Capacitive (LC) oscillator and including an inductor of known value and a capacitor under test, comparing an output of the oscil... | 11/17/2009 |
| 7425836 | Measuring chip-to-chip capacitance differentials by demodulating signals over a capacitance bridge In a method for determining capacitance, a first time-varying signal is driven on a first terminal of a first capacitor and a second time-varying signal is driven on a first terminal of a second capacitor, where the first time-varying signal and the second time-vary... | 09/16/2008 |
| 7369690 | Apparatus for recognizing an image In a fingerprint recognition apparatus, a first recognition section is formed on a center portion of a transparent substrate and a second recognition section is formed on the transparent substrate adjacent to the first recognition section. The first recognition sect... | 05/06/2008 |
| 7363814 | Multi-axial angular velocity sensor An angular velocity sensor for detecting angular velocity about a Z-axis in an XYZ coordinate system has a substrate oscillator, a flexible member for connecting the oscillator to a casing, a device for oscillating the oscillator in an X-axis direction, and a detect... | 04/29/2008 |
| 7366332 | Surface shape recognition sensor A detection element (1A) having a detection electrode (11A) connected to a surface shape detection unit (2) and a detection electrode (12A) connected to a common potential, and a detection element (1B) having a detection electrode ... | 04/29/2008 |
| 7360455 | Force detector and acceleration detector and method of manufacturing the same An electrode layer is formed on the upper surface of a first substrate, and a processing for partially removing the substrate is carried out in order to allow the substrate to have flexibility. To the lower surface of the first substrate, a second substrate is conne... | 04/22/2008 |
| 7315178 | System and method for measuring negative bias thermal instability with a ring oscillator An integrated circuit, in accordance with one embodiment of the present invention, includes a first device under test (DUT) module coupled to a first ring oscillator module and a second DUT module coupled to a second ring oscillator module. The first DUT module is b... | 01/01/2008 |
| 7292050 | Measuring rotational misalignment using spatial interference patterns A method for determining misalignment between two semiconductor dies is described in which signals are transmitted through a first subset of an array of proximity connectors that are proximate to a surface of one of the semiconductor dies and received through a seco... | 11/06/2007 |
| 7279904 | Input device An input device is provided. The input device includes an input electrostatic sensor having an input electrode. A noise detection electrostatic sensor has a noise detection electrode disposed on a periphery of the input electrostatic sensor. A control unit is operab... | 10/09/2007 |
| 7262609 | Methods and systems for guarding a charge transfer capacitance sensor for proximity detection Methods, systems and devices are described for determining a measurable capacitance for proximity detection in a sensor having a plurality of sensing electrodes and at least one guarding electrode. A charge transfer process is executed for at least two executions. T... | 08/28/2007 |
| 7259574 | Sensor device for measuring frequency and amplitude of varying force signals A sensor device for measuring frequency and amplitude of a varying force signal is provided. The sensor device comprises a sensing element defined by a plurality of even numbered planar segments symmetrically disposed about a central axis, a protective housing for h... | 08/21/2007 |
| 7255011 | Resistance type sensor Switches SW1 to SW4 and variable resistors are formed so as to overlap each other at positions corresponding to the X-axial positive direction, the X-axial negative direction, the Y-axial positive direction, and the Y-axial negative direction, respecti... | 08/14/2007 |
| 7256590 | Capacitance sensor type measuring apparatus A measuring apparatus having a probe that faces a surface of a target and is configured to supply AC current to the surface, measuring a voltage drop through a space between the probe and the surface, and obtaining a distance between the probe and the surface in acc... | 08/14/2007 |
| 7250773 | 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 ... | 07/31/2007 |
| 7245131 | Capacitance detection apparatus A capacitance detection apparatus includes a detection electrode for detecting approach of an object on the basis of a change of capacitance, a calculating circuit for calculating a value associated with the capacitance change, a judging circuit for judging whether ... | 07/17/2007 |
| 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 |
| 7235986 | Capacitive position sensing system with resonant amplification At least one exemplary embodiment of the present invention includes a capacitive sensing system, comprising a sensing conductor coupleable to a grounded target by a gap capacitance Cd, said grounded target separated from said sensing conductor by a gap ha... | 06/26/2007 |
| 7219561 | Force-detecting device Forces and moments are detected in a distinguishing manner by a simple structure. A supporting member (20) is positioned below a force receiving member (10), which receives forces to be detected, and between these components, four columnar force transm... | 05/22/2007 |
| 7218124 | Capacitive sensing apparatus designs One type of capacitive sensing apparatus has a sensing element that includes a first portion and a second portion adjacent opposite edges of a sensing region. Signals from the first and second portions are combined. Another type of apparatus includes: a first sensin... | 05/15/2007 |
| 7212015 | Capacitance sensor type measuring apparatus A measuring apparatus having a probe that faces a surface of a target and is configured to supply AC current to the surface, measuring a voltage drop through a space between the probe and the surface, and obtaining a distance between the probe and the surface in acc... | 05/01/2007 |
| 7212022 | System and method for measuring time dependent dielectric breakdown with a ring oscillator An integrated circuit, in accordance with one embodiment of the present invention, includes a first device under test (DUT) module coupled to a first ring oscillator module and a second DUT module coupled to a second ring oscillator module. A dielectric layer of the... | 05/01/2007 |
| 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 |
| 7194905 | Acceleration sensor A three-axis acceleration sensor having a simple construction is provided for improving shock resistance without lowering sensor sensitivity. An acceleration sensor for detecting acceleration in three orthogonal directions comprises an electrode substrate pai... | 03/27/2007 |
| 7174793 | Sensor sheet In a sensor sheet of the present invention, a large number of sensor cells, each having capacitance element electrodes corresponding to an X-axis direction, a Y-axis direction and a Z-axis direction and a displacement electrode arranged to form capacitance elements ... | 02/13/2007 |
| 7174521 | System and method for product yield prediction A system and method for predicting yield of integrated circuits includes at least one type of characterization vehicle which incorporates at least one feature which is representative of at least one type of feature to be incorporated in the final integrated circuit ... | 02/06/2007 |
| 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 that is a function of a time period, and determining the capacitance b... | 02/06/2007 |
| 7148704 | Charge transfer capacitive position sensor The position of an object, which may be a user's finger, along a body is sensed capacitively. A measurement circuit meters the simultaneous injection of electrical charge into the two ends of the body, which may be shaped as a straight line or as a curve. A computin... | 12/12/2006 |
| 7138809 | Electrical capacitance proximity sensor An electrical capacitance proximity sensor with high detector sensitivity has an insulating substrate, a detector electrode and an earth electrode formed in a fixed pattern on one face of the insulating substrate, and a detector circuit which detects an object appro... | 11/21/2006 |
| 7126352 | Method and device for determining the moisture content and conductivity in the ground and in bulk materials In a method and device for determining the moisture content and conductivity in the ground and in bulk materials, a capacitive sensor is disposed in the ground or the bulk material, the sensor is charged from a constant external voltage supply with a given initial c... | 10/24/2006 |
| 7126365 | System and method for measuring negative bias thermal instability with a ring oscillator An integrated circuit, in accordance with one embodiment of the present invention, includes a first device under test (DUT) module coupled to a first ring oscillator module and a second DUT module coupled to a second ring oscillator module. The first DUT module is b... | 10/24/2006 |
| 7123028 | Force detector The invention provides a force detector in which power consumption is suppressed. Four electrodes E11 through E14 are formed on a substrate, and an elastic deformable body formed of a rubber film is disposed thereon. A conductive coating is applied on ... | 10/17/2006 |
