Abstract: A system and method for injecting a signal on a sense electrode in order to increase the security of the touch sensor if signals are capable of being intercepted by a probe, the injected signals being capable of creating a signal on the sense electrode that replicates the signal of an actual finger, creating a signal on a sense electrode that is equal to but opposite of an actual finger in order to cancel out the signal from the actual finger and therefore hide its presence, and create a pseudo random signal on sense electrodes so that it is difficult to correlate measurable signals on sense electrodes to actual finger position.

Abstract: A system for physically and logically integrating near field communication technology, touch sensor technology and display technology by using a more powerful near field communication antenna disposed under the touch sensor and display screen for transmitting, and a smaller near field communication antenna on top of the touch sensor for receiving near field communication signals.

Abstract: A touch sensor having a plurality of parallel drive electrodes that are being electrically driven, providing stimulus on one end or simultaneously on both ends, thus creating a linear or varying electric field across the length of the drive electrodes, wherein adjacent sensor electrodes are connected to a sense amplifier and analog-to-digital (ADC) converter to determine the position of an object that comes near to the drive and/or sense electrodes, wherein the system uses self-capacitance and measures the amount of current driven by each driver, wherein the system uses a mutual capacitance current divider in a first method by driving an electrode with a time varying voltage and measuring induced currents at each end of an adjacent sense electrode and using ratiometric equations to determine finger position, and using a mutual capacitance voltage divider in a second method.

Abstract: A system for physically and logically integrating near field communication technology, touch sensor technology and display technology by using a more powerful near field communication antenna disposed under the touch sensor and display screen for transmitting, and a smaller near field communication antenna on top of the touch sensor for receiving near field communication signals.

Abstract: A system and method for injecting a signal on a sense electrode in order to increase the security of the touch sensor if signals are capable of being intercepted by a probe, the injected signals being capable of creating a signal on the sense electrode that replicates the signal of an actual finger, creating a signal on a sense electrode that is equal to but opposite of an actual finger in order to cancel out the signal from the actual finger and therefore hide its presence, and create a pseudo random signal on sense electrodes so that it is difficult to correlate measurable signals on sense electrodes to actual finger position.

Abstract: A method for detecting multiple objects on a touchpad having a grid of orthogonal electrodes, wherein all drive electrodes are simultaneously stimulated, and then frequency or electrode coding is used to separate each electrode junction and produce a capacitance image of the touchpad surface in a single measurement sequence.

Abstract: A system and method that combines RFID tag reader circuitry and a touch sensor, wherein the system and method may reduce power consumption of a battery powered system by detecting the presence of an RFID tag by using a lower power consumption touch sensor instead of scanning for the RFID tag by using higher power RFID tag detection and reading circuitry, controlling activation and deactivation of the RFID tag detection and reading circuitry when the touch sensor has detected the presence of the RFID tag, and reconfiguring sensor electrodes so that the electrodes may form a touch sensor or an antenna as needed.

Abstract: A method and system for enabling a near field communication antenna to be disposed adjacent to electrodes of a touch sensing device, the near field communication antenna being operated, and the magnetic field inductance and electric field coupling between the electrodes and the near field communication antenna being minimized in order to substantially reduce or eliminate induced currents on the electrodes.

Abstract: A system and method for enabling a dual interface smart card reader to be able to determine if data should be read from a smart card using wireless technology or touch technology, even when the data can be accessed through wireless technology.

Abstract: A method for detecting multiple objects on a touchpad having a grid of orthogonal electrodes, wherein all drive electrodes are simultaneously stimulated, and then frequency or electrode coding is used to separate each electrode junction and produce a capacitance image of the touchpad surface in a single measurement sequence.

Abstract: A touch sensor having a plurality of parallel drive electrodes that are being electrically driven, providing stimulus on one end or simultaneously on both ends, thus creating a linear or varying electric field across the length of the drive electrodes, wherein adjacent sensor electrodes are connected to a sense amplifier and analog-to-digital (ADC) converter to determine the position of an object that comes near to the drive and/or sense electrodes, wherein the system uses self-capacitance and measures the amount of current driven by each driver, wherein the system uses a mutual capacitance current divider in a first method by driving an electrode with a time varying voltage and measuring induced currents at each end of an adjacent sense electrode and using ratiometric equations to determine finger position, and using a mutual capacitance voltage divider in a second method.

Abstract: A method of performing a two-finger gesture when the absolute position of the fingers does not need to be known in order to perform the gesture. A touch sensor may provide a false or ghosted position and a real position for each actual finger on the touch sensor. The real position for each finger is located by finding a strongest signal when performing a short aperture measurement relative to one side of the touch sensor so that the direction of a rotation gesture can be determined. The position of fingers in single finger and multi-finger gestures may be determined using de-ghosted weighted average and weighted absolute deviation calculations.

Abstract: A system and method for enabling a stylus to be used with a touch sensor even after it has failed in an open mode or a closed mode, wherein the tethered stylus activates the inking function when the stylus is in contact with the touch sensor and deactivates the inking function when the stylus is lifted off the surface of the touch sensor when the switch is functioning properly, but when there is a failure of the switch in the open mode or the closed mode, enabling the tethered stylus to continue functioning by using a timer to activate the inking function when the tethered stylus is close enough to be detected by a touch sensor, and to deactivate the inking function when the tethered stylus is no longer detectable by the touch sensor.

Abstract: A touch sensor having a plurality of parallel drive electrodes that are being electrically driven, providing stimulus on one end or simultaneously on both ends, thus creating a linear or varying electric field across the length of the drive electrodes, wherein adjacent sensor electrodes are connected to a sense amplifier and analog-to-digital (ADC) converter to determine the position of an object that comes near to the drive and/or sense electrodes, wherein the system uses self-capacitance and measures the amount of current driven by each driver, wherein the system uses a mutual capacitance current divider in a first method by driving an electrode with a time varying voltage and measuring induced currents at each end of an adjacent sense electrode and using ratiometric equations to determine finger position, and using a mutual capacitance voltage divider in a second method.

Abstract: A method for detecting multiple objects on a touchpad having a grid of orthogonal electrodes, wherein all drive electrodes are simultaneously stimulated, and then frequency or electrode coding is used to separate each electrode junction and produce a capacitance image of the touchpad surface in a single measurement sequence.

Abstract: A method and system for enabling a near field communication antenna to be disposed adjacent to electrodes of a touch sensing device, the near field communication antenna being operated, and the magnetic field inductance and electric field coupling between the electrodes and the near field communication antenna being minimized in order to substantially reduce or eliminate induced currents on the electrodes.

Abstract: A method and system for enabling a near field communication antenna to be disposed adjacent to electrodes of a touch sensing device, the near field communication antenna being operated, and the magnetic field inductance and electric field coupling between the electrodes and the near field communication antenna being minimized in order to substantially reduce or eliminate induced currents on the electrodes.

Abstract: A stylus touch sensor and an inexpensive, battery free, wireless backscatter stylus, the stylus touch sensor including a host radio frequency (RF) antenna for generating a magnetic field, an electrode grid for detecting finger touches, and a stylus reader circuit for detecting a signal from a backscatter stylus, and the backscatter stylus having a first circuit for using the magnetic field to generate an electrical current for powering the backscatter stylus, and a second circuit for generating a backscatter signal that is detectable by the stylus reader circuit.

Abstract: A system and method for providing security for a point-of-sale (POS) terminal or an encrypting PIN pad (EPP) by protecting the signals that could be directly probed on a touch sensor electrode grid or remotely probed such as through power supply signals or RF emissions, wherein the drive signals are randomly applied to drive electrodes in order to prevent tracking of drive signals, and charge is injected on sense lines to hide PIN data.

Abstract: A system and method for increasing a report rate on a capacitive touch sensor to thereby provide a real-time display of the position of all the objects on a touch screen that is using synchronized timed orthogonal measurement stimulus patterns to determine the position of objects on the touch sensor, by updating an image of the reported positions of objects on the touch sensor each time that a measurement is taken on each of the sensor electrodes instead of waiting for a complete scan of all the sensor electrodes in a sensor electrode array.