Abstract: The disclosed technology controls a digital inking device by communicating electrostatic inking signals between the digital inking device and an ink-receiving computing device in an inking mode enabling the digital inking device to render digital ink in a display of the ink-receiving computing device via the electrostatic inking signals, detecting proximity of a peripheral communication device relative to the digital inking device, transitioning the digital inking device from the inking mode to a non-inking mode that terminates communication of the electrostatic inking signals between the digital inking device and the ink-receiving computing device, based at least in part on the detecting operation, and communicating electrostatic data signals in the non-inking mode between the digital inking device and the peripheral communication device in the non-inking mode, based at least in part on the transitioning to the non-inking mode.

Abstract: Devices are automatically paired (e.g., without user involvement) for wireless communication based on proximity. A first device may authorize (e.g., wired or wireless) bridge device(s) to participate in (e.g., initiate) pairing first and second devices. The first or bridge devices engage in wireless proximity communication with second device(s), indicating the second device(s) is(are) physically co-located with the first or bridge devices. Co-location is used to initiate automated pairing of the first and second devices. The second device provides a pairing address to the first device (e.g., through the bridge device). The first device provides a temporary security key for a secure channel between the first and second devices (e.g., through the bridge device). A non-temporary security key is provided by the first device to the second device (e.g., through the bridge device) over the secure channel. The first and second devices complete automated wireless pairing using the non-temporary security key.

Abstract: The disclosed technology provides wireless uplink transmission from a computing device to a peripheral device by communicating over a wireless connection between a digitizer of the computing device and the peripheral device by a multiuse communication protocol in which the digitizer receives input from the peripheral input device to affect operation of the computing device, transitioning communication from the multiuse communication protocol to a dedicated uplink communication protocol in which communication between with the peripheral input device includes transmission of multiple consecutive uplink blocks before the digitizer accepts downlink communications from the peripheral input device, and transmitting, while using the dedicated uplink communication protocol, consecutive data uplink blocks representing an upload to the peripheral input device before the digitizer accepts downlink communications from the peripheral input device.

Abstract: The disclosed technology controls a digital inking device by communicating electrostatic inking signals between the digital inking device and an ink-receiving computing device in an inking mode enabling the digital inking device to render digital ink in a display of the ink-receiving computing device via the electrostatic inking signals, detecting proximity of a peripheral communication device relative to the digital inking device, transitioning the digital inking device from the inking mode to a non-inking mode that terminates communication of the electrostatic inking signals between the digital inking device and the ink-receiving computing device, based at least in part on the detecting operation, and communicating electrostatic data signals in the non-inking mode between the digital inking device and the peripheral communication device in the non-inking mode, based at least in part on the transitioning to the non-inking mode.

Abstract: Examples are disclosed relating to using a spatial noise model to compensate for noise in a frame of touch sensor data. One example provides, on a computing device, a method comprising receiving a noise level for each sensor antenna of a set of sensor antennas of a touch sensor; for each pair of sensor antennas, determining a noise compensation ratio comprising a noise level of a first antenna compared to a noise level of a second antenna; and storing the noise compensation ratio in a spatial noise model.

Abstract: A method for electronic device identifier assignment at a host computing device includes receiving a current local identifier of a separate electronic device and a full unique identifier of the separate electronic device. A host-specific identifier is assigned to the separate electronic device by, based at least in part on determining that the current local identifier of the separate electronic device is included in a set of local identifier values available for assignment, assigning the host-specific identifier to the separate electronic device with a same local identifier value as the current local identifier. Based at least in part on determining that the current local identifier of the separate electronic device is already assigned by the host computing device to a different separate electronic device, the host-specific local identifier is selected from the set of local identifier values available for assignment and assigned to the separate electronic device.

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: A method is presented for providing haptic feedback through a touch-sensitive input device configured to provide input to a touch-sensitive computing device. The method comprises determining a haptic perception factor based on a set of computing device inputs received from sensors of the touch-sensitive computing device, the computing device inputs including at least a posture of the touch-sensitive computing device. A haptic response profile is determined based on the haptic perception factor. Haptic devices of the touch-sensitive input device are actuated based on the determined haptic response profile. Responsive to determining a change in the haptic perception factor based on a change in the posture of the touch-sensitive computing device the haptic response profile is then adjusted based on the changed haptic perception factor. The haptic devices of the touch-sensitive input device are then actuated based on the adjusted haptic response profile.

Abstract: A method for electronic device identifier assignment at a host computing device includes receiving a current local identifier of a separate electronic device and a full unique identifier of the separate electronic device. A host-specific identifier is assigned to the separate electronic device by, based at least in part on determining that the current local identifier of the separate electronic device is included in a set of local identifier values available for assignment, assigning the host-specific identifier to the separate electronic device with a same local identifier value as the current local identifier. Based at least in part on determining that the current local identifier of the separate electronic device is already assigned by the host computing device to a different separate electronic device, the host-specific local identifier is selected from the set of local identifier values available for assignment and assigned to the separate electronic device.

Abstract: An active stylus includes a stylus tip and a pressure sensor disposed proximate to the stylus tip. A stylus controller is configured to receive, from the pressure sensor, a current pressure value quantifying a pressure measured at the stylus tip. The stylus controller receives, from a separate display device, a proximity indicator that indicates a current estimated proximity of the stylus tip to a surface of a touch-sensitive display of the display device. Based at least on both of (1) the proximity indicator received from the separate display device, and (2) a comparison between the current pressure value and a touch input pressure threshold, the stylus controller sends a touch status indicator to the separate display device.

Abstract: A method is presented for providing haptic feedback through a touch-sensitive input device configured to provide input to a touch-sensitive computing device. The method comprises determining a haptic perception factor based on a set of computing device inputs received from sensors of the touch-sensitive computing device, the computing device inputs including at least a posture of the touch-sensitive computing device. A haptic response profile is determined based on the haptic perception factor. Haptic devices of the touch-sensitive input device are actuated based on the determined haptic response profile. Responsive to determining a change in the haptic perception factor based on a change in the posture of the touch-sensitive computing device the haptic response profile is then adjusted based on the changed haptic perception factor. The haptic devices of the touch-sensitive input device are then actuated based on the adjusted haptic response profile.

Abstract: A computing device including a wireless communication device, an electrostatic interface, and a processor. The processor may be configured to, via the electrostatic interface, detect a peripheral device proximate the surface. In response to detecting the peripheral device, the processor may be further configured to establish wireless pairing with the peripheral device at least in part by performing an identifier exchange via the electrostatic interface. Subsequently to performing the identifier exchange, establishing wireless pairing may further include generating a temporary key and transmitting the temporary key to the peripheral device via the electrostatic interface. Subsequently to transmitting the temporary key, establishing wireless pairing may further include receiving a first wireless pairing signal from the peripheral device via the wireless communication device.

Abstract: A computing device including a wireless communication device, an electrostatic interface, and a processor. The processor may be configured to, via the electrostatic interface, detect a peripheral device proximate the surface. In response to detecting the peripheral device, the processor may be further configured to establish wireless pairing with the peripheral device at least in part by performing an identifier exchange via the electrostatic interface. Subsequently to performing the identifier exchange, establishing wireless pairing may further include generating a temporary key and transmitting the temporary key to the peripheral device via the electrostatic interface. Subsequently to transmitting the temporary key, establishing wireless pairing may further include receiving a first wireless pairing signal from the peripheral device via the wireless communication device.

Abstract: A method for providing haptic feedback. Haptic feedback may be provided to a user through a touch-sensitive input device configured to provide input to a touch-sensitive computing device. The method includes determining a haptic perception factor based at least in part on one or more of a set of input device inputs received from sensors of the touch-sensitive input device and a set of computing device inputs received from sensors of the touch-sensitive computing device. A haptic response profile is determined based at least in part on the haptic perception factor. Haptic devices of the touch-sensitive input device are then actuated based at least in part on the determined haptic response profile.

Abstract: A method for providing haptic feedback. Haptic feedback may be provided to a user through a touch-sensitive input device configured to provide input to a touch-sensitive computing device. The method includes determining a haptic perception factor based at least in part on one or more of a set of input device inputs received from sensors of the touch-sensitive input device and a set of computing device inputs received from sensors of the touch-sensitive computing device. A haptic response profile is determined based at least in part on the haptic perception factor. Haptic devices of the touch-sensitive input device are then actuated based at least in part on the determined haptic response profile.

Abstract: An active stylus includes a stylus tip and a pressure sensor disposed proximate to the stylus tip. A stylus controller is configured to receive, from the pressure sensor, a current pressure value quantifying a pressure measured at the stylus tip. The stylus controller receives, from a separate display device, a proximity indicator that indicates a current estimated proximity of the stylus tip to a surface of a touch-sensitive display of the display device. Based at least on both of (1) the proximity indicator received from the separate display device, and (2) a comparison between the current pressure value and a touch input pressure threshold, the stylus controller sends a touch status indicator to the separate display device.

Abstract: A computing device comprises a logic subsystem and a storage subsystem holding instructions executable by the logic subsystem to transmit a first identifier of the computing device to a separate electronic device, the first identifier being transmitted during one time frame of a plurality of sequential time frames. A second identifier of the computing device is transmitted to the electronic device, the second identifier including more data than the first identifier, the second identifier being transmitted over two or more time frames of the plurality of sequential time frames. An electronic pairing is established between the computing device and the electronic device based at least in part on one or both of the first and second identifiers, the electronic pairing enabling receiving of control inputs from the electronic device at the computing device.

Abstract: A method for electronic device identifier assignment at a host computing device includes receiving, from a separate electronic device, a current local identifier of the separate electronic device and a full unique identifier of the separate electronic device. A host-specific identifier is assigned to the separate electronic device by, based at least in part on determining that the current local identifier of the separate electronic device is included in a set of local identifier values available for assignment, assigning the host-specific identifier to the separate electronic device with a same local identifier value as the current local identifier. Based at least in part on determining that the current local identifier of the separate electronic device is already assigned by the host computing device to a different separate electronic device, the host-specific local identifier is selected from the set of local identifier values available for assignment and assigned to the separate electronic device.

Abstract: Examples are disclosed herein that relate to various operational modes of a capacitive touch sensor. One example provides a touch-sensitive input device comprising receive circuitry, a capacitive touch sensor having a plurality of portions, and a controller. The controller is configured to, responsive to not detecting a finger or a pen, operate the touch sensor in a locating mode by successively driving each portion with a fixed DC voltage and multiplexing the portion to the receive circuitry in a predefined sequence, and responsive to detecting the pen, operate the touch sensor in a tracking mode by driving a selected portion with the fixed DC voltage and multiplexing the selected portion to the receive circuitry to track the pen, the selected portion selected based on a detected location of the pen relative to the touch sensor and being varied as the detected location changes.

Abstract: Examples are disclosed herein that relate to various operational modes of a capacitive touch sensor. One example provides a touch-sensitive input device comprising receive circuitry, a capacitive touch sensor having a plurality of portions, and a controller. The controller is configured to, responsive to not detecting a finger or a pen, operate the touch sensor in a locating mode by successively driving each portion with a fixed DC voltage and multiplexing the portion to the receive circuitry in a predefined sequence, and responsive to detecting the pen, operate the touch sensor in a tracking mode by driving a selected portion with the fixed DC voltage and multiplexing the selected portion to the receive circuitry to track the pen, the selected portion selected based on a detected location of the pen relative to the touch sensor and being varied as the detected location changes.