Abstract: A force-sensitive touch sensor detects location and force of touches applied to the sensor. Movement of an object touching the force-sensitive touch sensor correlates to movement of a pointer on a display device. Varying levels of force applied to the force-sensitive touch sensor are interpreted as different commands. Objects displayed on the display device can be manipulated by a combination of gestures across a surface of the force-sensitive touch sensor and changes in force applied to the force-sensitive touch sensor.

Abstract: Techniques for operating electronic paper displays of respective electronic devices are described. One set of techniques described below enhances user experience by utilizing multiple different waveform and/or display-update modes when rendering content on these displays. Another set of techniques are able to render lines on electronic paper displays having variable and arbitrary darkness, despite the restricted color depth inherent in these displays. In addition, this disclosure describes techniques for utilizing supersampling to select which shades to render on an electronic paper display of an electronic device. In still other implementations, the techniques described herein allocate a predefined frame rate of an electronic paper display between multiple different application components requesting to update the display, resulting smooth animation and relatively high-frame updates.

Abstract: A hardware enabled interpolating sensor allows for anti-aliased acquisition of data. Electrodes coupled with resistive material are disposed on either side of a transducer material, such that an impinging signal varies the electrical characteristics of the transducer material. A controller scans the electrodes and analyzes the variation in the electrical characteristics to generate data. Based upon the known characteristics of the resistive material, an interpolated image is generated from the data which is inherently anti-aliased. Additionally, an interpolating display comprising electrodes disposed on either side of an emission material is described, which allows for emission regions of varying intensity, area, and so forth.

Abstract: A force-sensitive touch sensor detects location and force of touches applied to the sensor. Movement of an object touching the force-sensitive touch sensor correlates to movement of a pointer on a display device. Varying levels of force applied to the force-sensitive touch sensor are interpreted as different commands. Objects displayed on the display device can be manipulated by a combination of gestures across a surface of the force-sensitive touch sensor and changes in force applied to the force-sensitive touch sensor.

Abstract: Techniques for operating electronic paper displays of respective electronic devices are described. One set of techniques described below enhances user experience by utilizing multiple different waveform and/or display-update modes when rendering content on these displays. Another set of techniques are able to render lines on electronic paper displays having variable and arbitrary darkness, despite the restricted color depth inherent in these displays. In addition, this disclosure describes techniques for utilizing supersampling to select which shades to render on an electronic paper display of an electronic device. In still other implementations, the techniques described herein allocate a predefined frame rate of an electronic paper display between multiple different application components requesting to update the display, resulting smooth animation and relatively high-frame updates.

Abstract: A force sensitive touch sensor is configured to distinguish objects touching the surface based on a touch profile. Magnetometers detect the presence, location, orientation, and angle of a stylus comprising a magnet. Presence of the magnetic field in conjunction with touches on the force sensitive touch sensor provides additional comparisons to distinguish whether a touch is from a human hand, a particular portion of a stylus, or other object.

Abstract: Embodiments provide techniques for updating pixels of an electrophoretic display through computational modeling of a current state of each pixel. A model buffer may store data for a modeled current state of each pixel in a display, providing a prediction of a current color state for each pixel based on voltages previously applied to the pixel. Upon receiving a frame to be displayed, including a target state for each pixel, embodiments determine which of a set of voltages (e.g., positive, negative, or neural/zero voltages) optimally alters the state of the pixel to be as close as possible to the target state. These voltage(s) may be applied to each pixel in an iterative manner, with each voltage determined based on the current modeled state of the pixel.

Abstract: Components such as touch sensors, antennas, and so forth may use arrays of elements to form operational components. Disposition of such an array between the user and a display device, pre-printed image, and so forth may result in moiré patterns or other unpleasant visual distractions. Visually consistent arrays utilize conductive mesh regions which are less visible than larger individual conductors. Non-conductive regions may be formed within an otherwise conductive mesh by introducing breaks in the conductive elements comprising the mesh. Additionally, in some implementations the non-conductive regions provide additional mechanical support.

Abstract: An combination interpolating force sensitive resistor (IFSR) array touch sensor and capacitive touch sensor, or a modified IFSR sensor, is configured to detect touches resistively and capacitvely. By comparing resistive and capacitive signals, touches may be accurately characterized. The IFSR array may also be used in conjunction with an active stylus to determine a position of the active stylus relative to the IFSR array.

Abstract: Substrates for components such as a display, touch sensor, multifunction stackup, and so forth may incorporate one or more haptic actuators configured to generate haptic output. These actuators may be formed from a portion of a body of the substrate, or separate pieces bonded or otherwise affixed to the substrate. Audible output resulting from activation of the actuators may be minimized by coupling the actuators such that they produce a physical displacement of the body of the substrate within, rather than orthogonal to, the plane of the body of the substrate.

Abstract: Techniques for implementing incremental page transitions on an electronic paper display of an electronic device are described herein. In some instances, an electronic-paper display controller that allows for per-pixel or multiple-pixel-block updating enables the incremental page transitions.

Abstract: A plurality of different procedures are used to improve a quality of an RGBW color mosaic image displayed on an electronic paper display, such as an electrophoretic display of an electronic device. By processing lines of an input color image within a pipeline, less memory is required, since intermediate images need not be stored between each successive procedures. The different procedures can include contrast enhancement, color downsampling, saturation boosting, fringe reduction, and dithering to reduce color banding. Fringe reduction is implemented by computing desired and perceived values for each color component of a pixel currently being processed, and desired and perceived values for the luma of an input pixel, and then convolving these values using convolution filters having values selected so that a total color component weight is the same for all of the color filters, thereby preserving color balance in the color image that is to be rendered.

Abstract: A device comprising a magnetic stylus, touch sensor, and reflective display provides new opportunities for content presentation and interaction. A user interface is configured to use input from the stylus and touch sensor to modify content presented on the reflective display.

Abstract: A device comprising a magnetic stylus, touch sensor, and reflective display provides new opportunities for content presentation and interaction. A user interface is configured to use input from the touch sensor, the stylus, and one or more magnetometers to modify content presented on the reflective display. This modification may include generating a virtual notebook comprising clippings of content.

Abstract: A force-sensitive touch sensor detects location and force of touches applied to the sensor. Movement of an object touching the force-sensitive touch sensor correlates to movement of a pointer on a display device. Varying levels of force applied to the force-sensitive touch sensor are interpreted as different commands. Objects displayed on the display device can be manipulated by a combination of gestures across a surface of the force-sensitive touch sensor and changes in force applied to the force-sensitive touch sensor.

Abstract: In some implementations, a stylus having a variable capacitive coupling mechanism may include a conductive stylus tip and a conductive stylus body. A spacer of resilient material may be positioned between the stylus body and the stylus tip. The spacer may be compressed when a user presses the stylus tip against a contact surface an electronic device having of a capacitive touch sensor. The compression of the spacer moves the stylus body closer to a proximal portion of the tip, which increases the capacitive coupling of the stylus with the touch sensor and provides an indication of the amount of pressure applied to the stylus tip by the user. In some examples, the stylus may further include a magnet, and the electronic device may include at least one magnetic field sensor to detect the orientation and/or angle of the magnet and, thus, the orientation and/or angle of the stylus.

Abstract: A plurality of haptic actuators is disposed to form a high resolution haptic array. This array may be configured to provide haptic feedback to a user by activating one or more of the plurality of haptic actuators. A display, a touch sensor, and the haptic array may be integrated into a single low-profile multifunction stackup.

Abstract: A touch sensor, a projection surface, and a projector are combined to form a touchable projection surface system. An image presented by the projector is modified at least partially in response to touches on the touchable projection surface assembly. Implements such as styli, rollers, brushes, and so forth, as well as body parts such as fingers, palms, feet, and so forth may impart touches. Responses to the imparted touches may vary at least partially in response to the different implements.

Abstract: In some implementations, an electronic device includes an actuator having a coil and a magnet, at least one of which may be movable relative to the other. The coil may receive a drive current to cause movement of at least one of the magnet or the coil, such as to provide a haptic output, motivate a loudspeaker, or the like. A transceiver electrically coupled with the coil through a connection circuit may use the coil as an antenna for at least one of sending or receiving a radio frequency communication through the coil. Additionally, or alternatively, the coil may be placed into proximity to a source of a magnetic field to induce an electric current in the coil. The induced electric current may be passed from the coil to a power management system, such as to charge a battery or the like.

Abstract: Touch sensors sensitive to touches on two sides are incorporated into electronic devices and accept input from either side of the device, such as a front and a back of the device. This increases available input area without doubling the number of touch sensors within the device. When combined with one or more displays, low profile two-sided devices are possible.