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Telegraphy > Systems > Position Coordinate Determination For Writing (e.g., Writing Digitizer Pad, Stylus, Or Circuitry) > Writing Digitizer Pad > Capacitive CapacitiveCapacitive patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.01/10/08 - 20080006454 - Mutual capacitance touch sensing device A touch sensing device is disclosed. The touch sensing device includes one or more multifunctional nodes each of which represents a single touch pixel. Each multifunctional node includes a touch sensor with one or more integrated I/O mechanisms. The touch sensor and integrated I/O mechanisms share the same communication lines ... 07/19/07 - 20070163815 - Detection circuit using a differential capacitive sensor with input-common-mode control in a sense interface A detection circuit is provided with a differential capacitive sensor and with an interface circuit having a first sense input and a second sense input, electrically connected to the differential capacitive sensor. Provided in the interface circuit are: a sense amplifier connected at input to the first sense input and ... 06/28/07 - 20070144795 - Equalizing reference surface capacitance with uneven thickness One embodiment in accordance with the invention includes a capacitive sensing apparatus that includes a capacitive sensor configured to sense an object proximate to a physical capacitive sensing reference surface. The capacitive sensing apparatus also includes a plurality of dielectric materials disposed between the capacitive sensor and the physical capacitive ... 05/24/07 - 20070114073 - Capacitive sensor to detect a finger for a control or command operation A capacitive sensor to detect a finger for an operation of a control and/or command comprises an electrically insulating layer forming a detection surface fitted with position marks for application of a finger, and generation of a signal by positioning or movement of the finger. A capacitive layer is covered ... 04/19/07 - 20070084645 - Touch sensing apparatus A touch sensing apparatus includes a sensor (13), an AC signal source (14), a gate circuit (15) with two inputs, a first load circuit (18), a second load circuit (19) and a detector (16). The alternating current (AC) signal source is for outputting AC signals to the two input of ... 04/19/07 - 20070084645 - Touch sensing apparatus A touch sensing apparatus includes a sensor (13), an AC signal source (14), a gate circuit (15) with two inputs, a first load circuit (18), a second load circuit (19) and a detector (16). The alternating current (AC) signal source is for outputting AC signals to the two input of ... 04/19/07 - 20070084644 - Touch sensing apparatus A preferred embodiment of a touch sensing apparatus includes an amplifier, an alternating current (AC) signal source, a sensor, a detector, a first load circuit, and a second load circuit. The alternating current (AC) signal source is for outputting AC signals to a first input and a second input of ... 04/19/07 - 20070084644 - Touch sensing apparatus A preferred embodiment of a touch sensing apparatus includes an amplifier, an alternating current (AC) signal source, a sensor, a detector, a first load circuit, and a second load circuit. The alternating current (AC) signal source is for outputting AC signals to a first input and a second input of ... 04/12/07 - 20070079996 - Base capacitance compensation for a touchpad sensor Methods are provided for base capacitance compensation of traces in a touchpad sensor. Compensation areas are calculated by evaluating the differences between the base capacitances of the traces, or the differences between the base capacitances of the traces and a target value. The compensation areas are electrically connected to respective ... 04/05/07 - 20070074916 - System and method for sensing the position of a pointing object using a conductive sheet A position input device includes a conductive resistive sheet as a sensing element and at least four terminals on the conductive sheet which are spaced apart from each other. The four terminals received oscillating electric field signals that correspond to the three dimensional position of a pointing object based on ... 04/05/07 - 20070074915 - Touch sensing apparatus A touch sensing apparatus includes: a differential signal source for generating two alternating current signals with same frequency and reverse phase; two conductors connected to a cathode output end and an anode output end of the differential signal source; a sensor for receiving a noise generated by a contact of ... 04/05/07 - 20070074914 - Interleaved electrodes for touch sensing A capacitive touch sensing system includes a touch surface and sets of substantially parallel electrodes arranged in relation to the touch surface. Each electrode set includes a primary electrode electrically connected to at least two sub-electrodes. The primary electrode is capable of producing greater capacitive coupling to a touch in ... 04/05/07 - 20070074913 - Capacitive touch sensor with independently adjustable sense channels Touch sensing systems and methods employ a touch surface and a touch sensor. An array of electrodes of the touch sensor is configured to capacitively couple to a touch in proximity with the touch surface. Circuitry is coupled to each electrode via a channel and configured to sense signals present ... 03/22/07 - 20070062739 - Touch sensitive screen A capacitive sensor for determining the presence of an object, such as a user's finger or a stylus, is provided. The sensor comprises a substrate, for example made of transparent plastics material, such as PET, on which electrodes are deposited. A resistive drive electrode for example formed of transparent ITO, ... 02/15/07 - 20070034423 - Touch screen having reduced susceptibility to radio frequency interference Systems and methods are disclosed for reducing susceptibility of touch screens to RF interference, thereby reducing susceptibility to touch position errors due to RF interference. In touch screen systems having touch sensors that lack a rear shield, the rear shield drive of the controller electronics can be capacitively connected individually ... 12/14/06 - 20060278444 - Touch technology A touchpad comprising a supporting medium (3) supporting a plurality of spaced apart conductors (2) in which there is no electrical contact between the conductors, each conductor being sensitive to the proximity of a finger (1) to vary the capacitance of said conductor (2) to detect the presence of said ... 02/16/06 - 20060032680 - Method of increasing the spatial resolution of touch sensitive devices Disclosed herein is a capacitive touch sensitive device. One aspect of the touch sensitive device described herein is a reduction in the number of sensor circuits needed for circular or linear capacitive touch sensitive devices while maintaining the same resolution and absolute position determination for a single object. A related ... 02/09/06 - 20060027404 - Tracking, auto-calibration, and map-building system A navigation or motion tracking system includes components associated with particular sensors, which are decoupled from a tracking component that takes advantage of information in the sensor measurements. The architecture of this system enables development of sensor-specific components independently of the tracking component, and enables sensors and their associated components ... 09/01/05 - 20050189154 - Noise reduction in digitizer system A method for noise reduction in a digitizer, the digitizer comprising a plurality of detecting elements for detecting an electromagnetic signal at one of a number of predetermined frequencies: the method comprising: sampling at least two of said detecting elements substantially simultaneously to obtain outputs therefrom, and reducing the output ... ### FreshPatents.com Support |