Sigmasense, Llc.

Unipixel Displays, Inc.

Rambus Inc.

Eastman-kodak Company

Rambus Delaware LLC

Unilectric, LLC

Daniel Keith Van Ostrand

Richard Stuart Seger, Jr

Gerald Dale Morrison

Patrick Troy Gray

Timothy W Markison

Michael Shawn Gray

Kevin Joseph Derichs

Phuong Huynh

Shayne X Short

Michael Frederick David Olley

John Christopher Price

Grant Howard McGibney

Martin G Selbrede

Carey King

Hans Howard Eilers

Sarah Marie Derichs

Patricia Markison Healy

Berry Tod Cox

Lynn Essman

Martin A Kykta

Ed Sundaram Ramakrishnan

Garth William Gobeli

Robert John Petcavich

Ying Zhou

Timothy A McCollum

Fumitomo Hide

B Tod Cox

Patricia A Markison

Christopher B Derichs

Timothy W Markisen

Garry Joel Baum

Thomas L Peterson

Reed J Killion

Garth Gobell

A no-ground plane differential touch screen display includes a display, a plurality of differential electrode pairs integrated into the display, a plurality of differential drive-sense circuits, and a processing module. When enabled, a set of differential drive-sense circuits of the plurality of differential drive-sense circuits is operable to provide a set of differential electrode signals to a set of differential electrode pairs of the plurality of differential electrode pairs and generate a set of sensed signals representative of electrical characteristic changes of the set of differential electrode pairs. The processing module is operable to interpret the electrical characteristic changes as one or more of a column mutual capacitance of a column differential electrode pair, a row mutual capacitance of a row differential electrode pair, and a cross mutual capacitance at a crossing between one or more row differential electrode pairs and column differential electrode pairs.

No-ground plane differential touch screen display

A device operative to transfer power and communicate wirelessly includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s). The DSC generates a drive signal based on a reference signal and provides the drive signal to a first coil via a single line and via a resonating capacitor, and simultaneously senses the drive signal via the single line, to facilitate electromagnetic coupling to a second coil to transfer power wirelessly to another device. The DSC also detects electrical characteristic(s) of the drive signal including whether a communication signal is transmitted from another device and generates a digital signal representative thereof. The processing module(s) generates the reference signal, processes the digital signal including to determine whether the communication signal is transmitted from the other device to the device and appropriately processes the digital signal to interpret control information of the communication signal to adapt the reference signal.

Wireless power transfer and communications

A sensor system operates by: communicating a first ID signal at a first frequency between a first passenger restraint and a first sensor circuit of a touch screen through a body of a first user in a first occupancy area; receiving first sensed signal data from the first sensor circuit indicating a possible interaction with a first interactable element at a first touch screen location based on changes in electrical properties of an electrode of the first sensor circuit; determining the first sensed signal data indicates detection of the first frequency; when permissions data for the first occupancy area indicates occupants of the first occupancy area can interact with the first interactable element, facilitate performance of a functionality associated with the first interactable element; when permissions data for the first occupancy area indicates occupants of the first occupancy area cannot interact with the first interactable element, foregoing performance of the functionality associated with the interaction with the first interactable element.

System for detecting and validating multiuser interaction with interface elements via signaling through users bodies

A touch screen display is operable to operate in a first mode during a first temporal period based on activating exactly one set of drive-sense circuits of a plurality of sets of drive-sense circuits to generate a corresponding one set of sensed signals during the first temporal period, and processing the corresponding one set of sensed signals to generate first proximal interaction data for the first temporal period. The touch screen display is operable to operate in a second mode during a second temporal period after the first temporal period based on activating more than one set of drive-sense circuits of the plurality of sets of drive-sense circuits to generate a corresponding more than one set of sensed signals during the second temporal period, and processing the set of sensed signals to generate second proximal interaction data for the second temporal period.

Activation of different subsets of drive-sense circuits in accordance with different modes of operation of a touch-based device

A sensor system operates by: communicating a first ID signal at a first frequency between a first perimeter sensor and a first sensor circuit of a touch screen through a body of a first user in a first occupancy area; receiving first sensed signal data from the first sensor circuit indicating a possible interaction with a first interactable element at a first touch screen location based on changes in electrical properties of an electrode of the first sensor circuit; determining the first sensed signal data indicates detection of the first frequency; when permissions data for the first occupancy area indicates occupants of the first occupancy area can interact with the first interactable element, facilitate performance of a functionality associated with the first interactable element; when permissions data for the first occupancy area indicates occupants of the first occupancy area cannot interact with the first interactable element, foregoing performance of the functionality associated with the interaction with the first interactable element.

System for detecting and validating multiuser interaction with interface elements via perimeter sensors

A touch sensor device (TSD) includes a panel and drive-sense circuits (DSCs). The panel includes electrodes, and the DSCs are operably coupled to the electrodes. A DSC is operably coupled via a single line to an electrode and is configured to provide a signal via the single line to the electrode and simultaneously to sense the signal via the single line. The sensing of the signal includes detection of an electrical characteristic of the electrode and/or a change of the signal. The DSC is also configured to generate a digital signal representative of the electrical characteristic of the electrode and/or the change of the signal. The TSD also includes one or more processing modules operably coupled to the DSCs and configured to execute operational instructions to process first digital signals generated by a first subset of the DSCs that includes fewer than all of the DSCs in a prioritized manner.

Touch sensor device with differentiated priority sensing region

An organic and inorganic material test system includes at least one test container, a first and second set of electrodes embedded in the at least one test container, a set of transmit circuits coupled to the first set of electrodes, and a set of differential drive-sense circuits (DDSCs) coupled to the second set of electrodes. A first transmit circuit coupled to a first electrode is operable to produce a first transmit signal at a first frequency for transmission through contents of a first test container. A first DDSC coupled to a second electrode of the first test container includes a pair of drive-sense circuits (DSCs) and an output operational amplifier. The pair of DSCs are operable to generate receive signals at the first frequency. The output operational amplifier compares receive signals to produce a signal representative of the contents with respect to positioning of the first and second electrodes.

Organic and/or inorganic material test system using differential drive-sense circuits

A fingerprint imaging device incorporating a first plurality of electrodes, a second plurality of electrodes and drive-sense circuitry. The first plurality of electrodes and the second plurality of electrodes are separated by a dielectric material and arranged in a crossing pattern in a sensing area. In an embodiment, each of the drive-sense circuits is configured to drive a sensor signal on an electrode of the first plurality or second plurality of electrodes, the sensor signal including a drive signal component and a receive signal component. Each of the drive-sense circuits is further configured to generate, based on the receive signal component, a sensed signal representative of at least a first impedance of the electrode. For at least some of the drive-sense circuits, the sensed signal further represents a second impedance of the electrode in accordance with a drive signal component from a differing electrode. A processing module of the device is configured to process the sensed signals to detect a finger touch to the sensing area and generate a digital representation/capacitive image of a fingerprint corresponding to the finger touch.

Fingerprint imaging device incorporating electrodes and drive-sense circuitry

A drive-sense circuit module includes at least one regulated source circuit coupled to a load, and to a loop correction circuit. The regulated source circuit generates a drive signal, which has a regulated characteristic and a controlled characteristic. At least one reference circuit applies a reference signal to the loop correction circuit that establishes a reference value of the controlled characteristic. The loop correction circuit senses an effect of one or more load characteristics on a sensed value of the controlled characteristic of the drive signal and generates a comparison signal based on the sensed value and the reference value of the controlled characteristic. A regulation signal is generated based on the comparison signal and used to regulate the regulated characteristic of the drive signal. A control module controls the regulated source circuit and the loop correction circuit to iterate through at least a first combination and a second combination of regulated characteristics and controlled characteristics.

Determining the effects of different electrical characteristics of a drive-sense circuit on a load

A rotating equipment system with in-line drive-sense circuit (DSC) electric power signal processing includes rotating equipment, in-line drive-sense circuits (DSCs), and one or more processing modules. The in-line DSCs receive input electrical power signals and generate motor drive signals for the rotating equipment. An in-line DSC receives an input electrical power signal, processes it to generate and output a motor drive signal to the rotating equipment via a single line and simultaneously senses the motor drive signal via the single line. Based on the sensing of the motor drive signal via the single line, the in-line DSC provides a digital signal to the one or more processing modules that receive and process the digital signal to determine information regarding one or more operational conditions of the rotating equipment, and based thereon, selectively facilitate one or more adaptation operations on the motor drive signal via the in-line DSC.

Prime mover and generator regulation based on output signal sensing

A low voltage drive circuit includes a transmit digital to analog circuit that converts transmit digital data into analog outbound data by: generating a DC component; generating a first oscillation at a first frequency; generating a second oscillation at the first frequency; and outputting the first oscillation or the second oscillation on a bit-by-bit basis in accordance with the transmit digital data to produce an oscillating component, wherein the DC component is combined with the oscillating component to produce the analog outbound data, and wherein the oscillating component and the DC component are combined to produce the analog outbound data. A drive sense circuit drives an analog transmit signal onto a bus, wherein the analog outbound data is represented within the analog transmit signal as variances in loading of the bus at the first frequency and wherein analog inbound data is represented within an analog receive signal as variances in loading of the bus at a second frequency.

Low voltage drive circuit for transceiving analog data via a bus and methods for use therewith

A touch sensor system includes touch sensors, drive-sense circuits (DSCs), memory, and a processing module. A DSC drives a first signal via a single line coupling to a touch sensor and simultaneously senses, when present, a second signal that is uniquely associated with a user. The DSC processes the first signal and/or the second signal to generate a digital signal that is representative of an electrical characteristic of the touch sensor. The processing module executes operational instructions (stored in the memory) to process the digital signal to detect interaction of the user with the touch sensor and to determine whether the interaction of the user with the touch sensor compares favorably with authorization. When not authorized, the processing module aborts execution of operation(s) associated with the interaction of the user with the touch sensor. Alternatively, when authorized, the processing module facilitates execution of the operation(s).

Single user or few users identification and blocking operable touch sensor device

A method includes generating, by a first drive-sense circuit of circuitry of an electronic pen, a first error signal corresponding to an electrical characteristic of a first orientation capacitor of the electronic pen; and generating, by a second drive-sense circuit of the circuitry, a second error signal corresponding to an electrical characteristic of a second orientation capacitor. The method further includes subtracting, by a first subtraction module, the first and second error signals to produce a first difference error signal; receiving, by the circuitry, a self-signal transmitted by one or more electrodes of a touch screen via a primary conductor of the electronic pen; transmitting, by the circuitry, a ring back signal to the touch screen via the primary conductor in response to the self-signal; and transmitting, by the circuitry, the first difference error signal to the touch screen via a secondary conductor of the electronic pen.

Electronic pen generation of tilt orientation data based on capacitance difference detection

A device having a flexible touch screen display configured to display images in at least a first touch area and a second touch area. At least a portion of the second touch area is located on an edge or side surface of the device. A first plurality of touch sensitive column electrodes and a plurality of row electrodes are integrated into the first touch area, and a second plurality of column electrodes and the plurality of row electrodes are integrated into the second touch area of the flexible display. The device further includes a plurality of drive-sense circuits that drive sensor signals on the electrodes. A processing module senses, based on the sensor signals, an electrical characteristic of at least one row electrode and at least one column electrode of the first touch area or the second touch area and determines, based on the electrical characteristic, a proximal touch to at least one of the first touch area or the second touch area.

Device having a flexible/foldable touch screen display with multiple touch areas

A method for use in a touch-sensitive panel includes generating electric fields by applying drive signals to a plurality of row electrodes and a plurality of column electrodes included in the touch-sensitive panel, and sensing at least one information signal capacitively coupled to the touch-sensitive panel by detecting impedance changes associated with the plurality of row electrodes and the plurality of column electrodes. The impedance changes are converted to received data. Based on the received data a transmission pattern associated with the at least one information signal is determined. It is further determined that the transmission pattern corresponds to an identification code.

Growing community of inventors

Leander, TX, United States of America

Daniel Keith Van Ostrand