Abstract: A method includes transmitting, by a plurality of drive sense circuits of an interactive display device, a plurality of signals on a plurality of electrodes of the interactive display device. A writing passive device is identified based on a first plurality of changes detected in the electrical characteristics of the set of electrodes. Written user notion data is determined based on detecting movement of the writing passive device in relation to the interactive display device, and the written user notation data is displayed. An erasing passive device is identified based on a second plurality of changes detected in the electrical characteristics of the set of electrodes. Erased portions of the written user notation data is determined based on detecting movement of the erasing passive device in relation to the interactive display device, and the updated written user notation data is displayed based on no longer displaying the erased portions.

Abstract: A touch sensor device (TSD) includes TSD electrodes associated with a surface of the TSD. Also, an overlay that includes marker electrode(s) is also associated with a region of the surface of the TSD. The TSD also includes drive-sense circuits (DSCs) operably coupled to the plurality of TSD electrodes. A DSC is configured to provide a TSD electrode signal to a TSD electrode and simultaneously to sense a change of the TSD electrode signal based on a change of impedance of the TSD electrode caused by capacitive coupling between the TSD electrode and the marker electrode(s) of the overlay. Processing module(s) is configured to process a digital signal generated by the DSC and other digital signals generated by other DSCs determine the region of the surface of the TSD that is associated with the overlay and to adapt sensitivity of the TSD within that region.

Abstract: A digital camera comprising a digital image sensor and at least one corrective lens element configured to reduce a blurring of an image in a horizontal or vertical dimension on the digital image sensor. Preferably the digital image sensor is a large digital imager such as a Digital 65 imager.

Abstract: A drive-sense circuit module (DSC) includes at least one regulated source circuit coupled to a load, and to a loop correction circuit. The regulated source circuit generates a power 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 power 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 power signal.

Abstract: A computing device includes signal generation circuitry and also includes a location on the computing device that is operative to couple a signal generated by the signal generation circuitry into a user. For example, the computing device includes signal generation circuitry that generates a signal that includes information corresponding to a user and/or an application that is operative within the computing device. The signal generation circuitry couples the signal into the user from a location on the computing device based on a bodily portion of the user being in contact with or within sufficient proximity to the location on the computing device that facilitates coupling of the signal into the user. Also, the signal may be coupled via the user to another computing device that includes a touchscreen display that is operative to detect and receive the signal.

Abstract: 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.

Abstract: A capacitive imaging glove includes electrodes implemented throughout the capacitive imaging glove and drive-sense circuits (DSCs) such that a DSC receives a reference signal generates a signal based thereon. The DSC provides the signal to a first electrode via a single line and simultaneously senses it. Note the signal is coupled from the first electrode to the second electrode via a gap therebetween. The DSC generates a digital signal representative of the electrical characteristic of the first electrode. Processing module(s), when enabled, is/are configured to execute operational instructions (e.g., stored in and/or retrieved from memory) to generate the reference signal, process the digital signal to determine the electrical characteristic of the first electrode, and process the electrical characteristic of the first electrode to determine a distance between the first electrode and the second electrode, and generate capacitive image data representative of a shape of the capacitive imaging glove.

Abstract: A pen for interacting with a touch screen of a computing device includes an alternating current coupling circuit and a sense-regulation circuit. The alternating current coupling circuit receives a sense signal from the touch screen. The alternating current coupling circuit transmits a transmit signal to the touch screen. The sense-regulation circuit receives the sense signal from the alternating current coupling circuit. The sense-regulation circuit receives a representation of transmit data. The sense-regulation circuit generates a comparison signal based on the sense signal and the representation of the transmit data. The sense-regulation circuit converts the representation of the transmit data into the transmit signal.

Abstract: 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).

Abstract: A fluid signal generator configured to produce fluid pulses in a fluid column of a wellbore are described. The fluid pulses represent data and/or other information to be transmitted from a downhole device, such as a fluid plug apparatus located within the borehole of the wellbore, to one or more other devices located away from the downhole device, including devices located above a surface of the wellbore. The fluid plug may be configured to provide a fluid seal between a first portion of the wellbore and a second portion of the wellbore prior to and during a fluid treatment procedure being performed on the wellbore.

Abstract: A method for execution by an input/output (IO) control module of an integrated circuit (IC) includes determining whether a programmable IO interface module is for dynamic or static use. The programmable IO interface module includes a configurable front-end module and a configurable back-end module. When the programmable IO interface module is for the dynamic use, determining to configure the programmable IO interface module as the dynamic use of a configuration of a plurality of configurations. The plurality of configurations includes a bidirectional interface, an input, an output, a concurrent drive and sense interface, and a concurrent transmit-receive interface. The method further includes configuring the front-end module in accordance with the configuration, configuring the back-end module in accordance with the configuration, and determining whether to change the configuration to another configuration of the plurality of configurations.

Abstract: 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.

Abstract: A method for determining for determining response for a touch display panel begins by receiving an analog input signal from a data drive input circuit that is operable to generate an analog input signal based on a digital input. The method continues by generating a reference signal voltage from the analog input signal, generating a data signal voltage from the analog input signal and using a difference detection circuit, outputting an analog output voltage. The method then continues by generating an error correction current based on the analog output voltage, where the error correction current adjusts the data signal voltage in order to keep inputs to the difference detection circuit substantially equal. Finally, the method finishes by generating a current representative of a light intensity for light received by a sensor cell associated with the touch display panel, converting the analog output signal into a digital representation of the current and producing information representative of light intensity.

Abstract: 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.

Abstract: A capacitive touch screen display operates by: providing a display configured to render frames of data into visible images; providing a plurality of electrodes integrated into the display to facilitate touch sense functionality based on electrode signals having a drive signal component and a receive signal component; generating, via a plurality of drive-sense circuits coupled to at least some of the plurality of electrodes, a plurality of sensed signals; receiving the plurality of sensed signals; generating a stream of capacitance image data associated with the plurality of cross points that includes capacitance variation data corresponding to variations of the capacitance image data from a nominal value within a temporal period; and processing the capacitance image data to determine a touchless gesture occurring within the temporal period.

Abstract: A variable touch screen includes a first touch screen display and a second touch screen display, where the first touch screen display includes a first plurality of electrodes and first touch screen circuitry operably coupled to the first plurality of electrodes, where the first touch screen circuity includes a plurality of drive-sense circuits that, when enabled, are configured to drive a plurality of sensor signals onto the plurality of electrodes, sense first effects that the plurality of electrodes have on the plurality of sensor signals and produce a first plurality of sensed signals based on the first effects. The second touch screen display has a first edge of the first touch screen display that, when oriented such that the first edge is aligned adjacent to a first edge of the second touch screen display, increases a size of the variable touch screen.

Abstract: A fingerprint scanning device having a sensing area that includes a plurality of row electrodes and a plurality of column electrodes. The row electrodes and column electrodes are separated by a dielectric material and arranged in a crossing pattern in the sensing area. A plurality of drive-sense circuits drive sensor signals on the electrodes. In an embodiment, each of the drive-sense circuits is configured, when enabled, to drive a sensor signal on at least one electrode of the plurality of column electrodes or the plurality of row 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 an impedance of the at least one electrode.

Abstract: A method includes a first computing device generating a signal having an oscillating component and driving the signal on a first touch sense element of the first computing device. The method continues with the first computing device detecting a touch on the first touch sense element based on the signal. While the touch is detected, the method continues by the first computing device modulating the signal with data to produce a modulated data signal. The method continues with a second computing device receiving the modulated data signal via a transmission medium and a second touch sense element of the second computing device, where the transmission medium includes at least one of a human body and a close proximity between the first and second computing devices. The method continues with by the second computing device demodulating the modulated data signal to recover the data.

Abstract: A data sensing circuit including a reference signal circuit, a reference signal combining circuit, drive-sense circuits, an array of sensors, sets of digital filters, and a processing module. The processing module provides a reference control signal to the reference signal circuit operable to generate a plurality of reference signals based on the reference control signal. The reference signal combining circuit transmits sets of reference signals to the drive-sense circuits operably coupled to an array of sensor. When the sensor is exposed to a condition, and is receiving the signal from the drive-sense circuits, an electrical characteristic of the sensor affects the signal, which is interpreted by the drive-sense circuit and converted to a digital signal to be filtered by the set of digital filters generating a frequency response for the array of sensors.

Abstract: A data drive input circuit includes a pulse width modulation (PWM) module operable to generate a PWM signal based on input data and a clock signal. The data drive input circuit further includes a mode enable module operable to establish a light emitting diode (LED) transmit mode of a mode signal when the PWM signal is in a first state and establish an LED receive mode of the mode signal when the PWM signal is in a second state. The data drive input circuit further includes a transmit/receive drive module operable to generate a transmit data signal component of an analog input signal based on the PWM signal and the LED transmit mode generate a receive signal component of the analog input signal based on the PWM signal and the LED receive mode and output the analog input signal.