Abstract: A touch-screen display device comprises a series of column electrodes and a series of row electrodes, with an electronic display layer arranged behind the series of column electrodes and behind the series of row electrodes. The series of row electrodes crosses the series of column electrodes such that the electrical impedance at each crossing of a row and column electrode is responsive to the proximity of a touch input to that crossing. A row-drive circuit is configured to apply an excitation signal to a selected row electrode and to concurrently apply a compensation signal to one or more other row electrodes, the compensation signal being out of phase with respect to the excitation signal. A column-sense circuit is configured to sense a column signal from the series of column electrodes and to provide a corresponding column output.

Abstract: A method to process touch input on a touch-screen display device having an electronic display layer arranged behind a series of column electrodes and behind a series of row electrodes. The method comprises: concurrently driving one or more row electrodes while leaving undriven one or more other row electrodes; sensing a row signal from the one or more other row electrodes; sensing a column signal from the series of column electrodes; and providing a corrected column output based at least partly on the column signal and on the row signal.

Abstract: Examples are disclosed that relate to mitigating unintended OLED display emissions arising from a proximity sensor emitter located behind an OLED display panel. One example provides a display device comprising an OLED display panel, a proximity sensor having a proximity sensor emitter positioned behind one or more OLED pixels of the OLED display panel with respect to a viewing surface of the OLED display panel, and a proximity emitter mask positioned between the proximity sensor emitter and the one or more OLED pixels to shield the one or more OLED pixels from the proximity sensor emitter.

Abstract: A stylus comprising a housing and a nib portion configured to be attached to the housing and to extend out from the housing, wherein the nib portion comprises at a tip area an integrated conductive tip electrode and at least one integrated conductive ring electrode surrounding the tip electrode at least partially and electrically isolated from the tip electrode.

Abstract: An apparatus and method for compensating the effect of a contact by a hand or other body part of a user with a touch screen of a host device while holding an input device on the strength of a capacitively coupled uplink signal provided to the input device (e.g. stylus) by the host device. The compensation is achieved by applying an antiphase signal on a selective contact area (e.g. under a palm area), to increase an overall induced signal collected by the input device from digitizer-to-pen and palm-to-pen paths.

Abstract: Examples are disclosed that relate to mitigating unintended OLED display emissions arising from a proximity sensor emitter located behind an OLED display panel. One example provides a display device comprising an OLED display panel, a proximity sensor having a proximity sensor emitter positioned behind one or more OLED pixels of the OLED display panel with respect to a viewing surface of the OLED display panel, and a proximity emitter mask positioned between the proximity sensor emitter and the one or more OLED pixels to shield the one or more OLED pixels from the proximity sensor emitter.

Abstract: A stylus comprising a housing and a nib portion configured to be attached to the housing and to extend out from the housing, wherein the nib portion comprises at a tip area an integrated conductive tip electrode and at least one integrated conductive ring electrode surrounding the tip electrode at least partially and electrically isolated from the tip electrode.

Abstract: One or more display color characteristics of an electronic device are managed using a light detecting sensor configured to output multiple color channels in a predefined color space. The light detecting sensor in the electronic device senses ambient light and outputs measurements in visible color channels of the predefined color space to characterize the sensed ambient light. A ratio of one or more measurements of one of the visible color channels to one or more measurements of another of the visible color channels is determined. At least one light source generating at least a portion of the sensed ambient light is classified based at least in part on the determined ratio, wherein the determined ratio indicates a color temperature component of the sensed ambient light. The one or more display color characteristics of the electronic device are adjusted based at least in part on the classifying operation.

Abstract: A stylus comprising a housing and a nib portion configured to be attached to the housing and to extend out from the housing, wherein the nib portion comprises at a tip area an integrated conductive tip electrode and at least one integrated conductive ring electrode surrounding the tip electrode at least partially and electrically isolated from the tip electrode.

Abstract: Examples are disclosed that relate to mitigating unintended OLED display emissions arising from a proximity sensor emitter located behind an OLED display panel. One example provides a display device comprising an OLED display panel, a proximity sensor having a proximity sensor emitter positioned behind one or more OLED pixels of the OLED display panel with respect to a viewing surface of the OLED display panel, and a proximity emitter mask positioned between the proximity sensor emitter and the one or more OLED pixels to shield the one or more OLED pixels from the proximity sensor emitter.

Abstract: One example provides a display device comprising a display panel, a touch sensor, an ambient light sensor, a processor, and storage. The storage comprises instructions executable by the processor to monitor an ambient light signal received from the ambient light sensor, detect, in combination with a call event, a threshold change in the ambient light signal that is indicative of the display device being proximate to a body of a user, and based at least on detecting the threshold change in the ambient light signal, modify an operation of the display device.

Abstract: One example provides a method enacted on a display device comprising an organic light emitting diode (OLED) display panel and a light sensor positioned behind the OLED display panel with respect to a viewing surface of the OLED display panel. The method comprises receiving data samples from the light sensor and determining a temporal location for each of one or more non-emissive states of the OLED display panel. The method further comprises determining an ambient light characteristic using one or more data samples acquired during the one or more non-emissive states of the OLED display panel and adjusting an emission characteristic of the OLED display panel based at least in part on the ambient light characteristic determined.

Abstract: One example provides a method enacted on a display device comprising an organic light emitting diode (OLED) display panel and a light sensor positioned behind the OLED display panel with respect to a viewing surface of the OLED display panel. The method comprises receiving data samples from the light sensor and determining a temporal location for each of one or more non-emissive states of the OLED display panel. The method further comprises determining an ambient light characteristic using one or more data samples acquired during the one or more non-emissive states of the OLED display panel and adjusting an emission characteristic of the OLED display panel based at least in part on the ambient light characteristic determined.

Abstract: Methods, systems and computer program products provide touch screen erasing. A touch device includes an eraser detector that configured to analyze one or more blobs comprising a plurality of detected signals caused by a conductive pattern in or on an eraser type of touch instrument in proximity to the touch device. Each detected signal may have an associated intensity and location on the touch device. A position detector is configured to detect a position of an eraser based on the locations of the plurality of detected signals. An orientation detector is configured to detect an orientation of the eraser based on the intensities of the plurality of detected signals. An eraser reporter is configured to report the position and orientation of the eraser to a content source (e.g., an application and/or operating system providing displayed content).

Abstract: A stylus placed in a docking station is used as a joystick by setting up a self-capacitance or mutual capacitance between the stylus and the docking port and measuring changes in that mutual capacitance as the stylus is moved by the user. The mutual capacitance is set up using electrodes and/or the housing of the stylus and the changes may be measured either from the stylus or from the docking station.

Abstract: A method for touch detection on an ungrounded pen enabled device includes sampling output in a frequency range of a signal emitted from a stylus over a stylus sampling window, detecting touch input from a finger or hand based on detecting a gain between a touch threshold and a stylus threshold, wherein the touch threshold is below the stylus threshold over at least two consecutive columns and two consecutive rows of the sensor and reporting coordinates of the touch input based on detecting the touch input. Stylus input is detected based on detecting a gain above a stylus threshold in at least one column and one row of the sensor and coordinates of the stylus are reported based on stylus input being detected. Sampling is performed simultaneously from both columns and rows of a grid based capacitive sensor.

Abstract: A keyboard has a keypad layer of resiliently depressible keypads. The keyboard has a skin of dielectric material, covering a base of the keyboard. The skin contacts a capacitive touchscreen in use, and an actuating layer is on a face of the skin of dielectric material away from the base. The actuating layer comprises a plurality of conductive regions, one per keypad. A grounding layer is between the actuating layer and the keypad layer and spaced from the actuating layer during a rest state of the keyboard. Upon depression of a keypad, the keypad presses a region of the grounding layer under the keypad towards a region of the actuating layer such that the region of the actuating layer becomes grounded and causes a change in capacitance detectable by the capacitive touchscreen.

Abstract: A mechanical keyboard for use on a touch screen comprises an individually and resiliently depressible key and a network of electrical conductors. They key includes a user-facing outer portion and a screen-facing, electrically conductive inner portion, the inner portion being configured to approach the touch screen during depression of the key. The network of electrical conductors is configured to conduct a drive signal to the inner portion of the key, the drive signal being received, during the depression of the key, at a locus of touch screen directly beneath the key.

Abstract: A mechanical keyboard for use on a touch screen comprises an individually and resiliently depressible key and a network of electrical conductors. They key includes a user-facing outer portion and a screen-facing, electrically conductive inner portion, the inner portion being configured to approach the touch screen during depression of the key. The network of electrical conductors is configured to conduct a drive signal to the inner portion of the key, the drive signal being received, during the depression of the key, at a locus of touch screen directly beneath the key.

Abstract: The structure and devices described herein provide an improved digital eraser for a stylus. A stylus may have an eraser end that transmits an erase signal from an eraser antenna. A cover houses the eraser antenna and can be configured with varying geometry to selectively position the eraser antenna closer to, or further away from, a digitizer screen of a computing device when the cover is in contact with the digitizer screen. The computing device can detect the signal strength of the erase signal and/or the contact area between the cover and the digitizer screen and vary one or more of the width, area, or opacity of the erase function. The computing device can further, based upon the strength of the signal and/or the contact area between the cover and the digitizer screen, determine the tilt and/or the rotation of the stylus.