Abstract:
Systems, methods, and devices for calibrating an electronic display to reduce or eliminate a mura artifact are provided. The mura artifact may be due to differential behavior of common voltage layers (VCOMs) in the electronic display. One method for reducing or eliminating the mura artifact may involve setting pixels of the electronic display to a first gray level and measuring a luminance difference between light and dark areas of a mura artifact on the electronic display. A value of an operating parameter of the electronic display may be adjusted while monitoring the luminance difference measurement. A value of the operating parameter that causes the luminance difference measurement to be within a specified range of acceptable luminance difference measurement values may be stored in the electronic display.
Abstract:
A display may receive image data to be displayed for a user of an electronic device. Display driver circuitry in the display may analyze the data to detect static data. The image data may contain static frames of data or static portions of a frame of data. In response to detection of static data, the display driver circuitry can take actions to avoid display damage due to burn-in effects. The display driver circuitry may reduce a peak luminance value associated with a peak luminance control algorithm, may reduce display brightness, may map image data to reduced brightness levels, or may take other actions to ensure that display pixels in the display are not damaged. Temperature information may be used in determining how to classify information as static data and in determining how significantly to reduce display pixel drive currents in response to the detection of static image data.
Abstract:
Some embodiments provide a vehicle that includes a protection system configured to mitigate hazards to vehicle occupants posed by dynamic elements located within proximity of the vehicle. The vehicle can, in response to determining that a dynamic element is moving along a trajectory that intersects a sweep volume of a vehicle portal, can selectively restrict operation of the portal so that an occupant is restricted from opening the portal into a volume through which the dynamic element may pass. The vehicle can restrict portal operation in response to detecting external dynamic elements that are not within an occupant's field of vision. The vehicle can communicate a limited selection of vehicle sensor data, including representations of a detected dynamic element, to a user device supporting an authorized user in response to detecting that the dynamic element is located within a certain proximity of the vehicle.
Abstract:
Some embodiments provide a vehicle that includes a protection system configured to mitigate hazards to vehicle occupants posed by dynamic elements located within proximity of the vehicle. The vehicle can, in response to determining that a dynamic element is moving along a trajectory that intersects a sweep volume of a vehicle portal, can selectively restrict operation of the portal so that an occupant is restricted from opening the portal into a volume through which the dynamic element may pass. The vehicle can restrict portal operation in response to detecting external dynamic elements that are not within an occupant's field of vision. The vehicle can communicate a limited selection of vehicle sensor data, including representations of a detected dynamic element, to a user device supporting an authorized user in response to detecting that the dynamic element is located within a certain proximity of the vehicle.
Abstract:
Some embodiments provide a vehicle that includes a protection system configured to mitigate hazards to vehicle occupants posed by dynamic elements located within proximity of the vehicle. The vehicle can, in response to determining that a dynamic element is moving along a trajectory that intersects a sweep volume of a vehicle portal, can selectively restrict operation of the portal so that an occupant is restricted from opening the portal into a volume through which the dynamic element may pass. The vehicle can restrict portal operation in response to detecting external dynamic elements that are not within an occupant's field of vision. The vehicle can communicate a limited selection of vehicle sensor data, including representations of a detected dynamic element, to a user device supporting an authorized user in response to detecting that the dynamic element is located within a certain proximity of the vehicle.
Abstract:
A wireless data processing device is described which periodically exits an unpowered state and transmits location data. For example, one embodiment of a wireless data processing device comprises: power circuitry for maintaining the wireless data processing device in a powered or unpowered state, the power circuitry causing the wireless data processing device to enter into an unpowered state responsive to user input; a timer to periodically power up the wireless device or portion thereof in response to reaching a predetermined time; a location services module determining a current location of the wireless data processing device using one or more specified location determination techniques; a transmit thread transmitting the current location of the wireless device over one or more specified communication channels; and the power circuitry powering down the wireless, data processing device a second time after the current location has been transmitted.
Abstract:
A wireless data processing device is described which periodically exits an unpowered state and transmits location data. For example, one embodiment of a wireless data processing device comprises: power circuitry for maintaining the wireless data processing device in a powered or unpowered state, the power circuitry causing the wireless data processing device to enter into an unpowered state responsive to user input; a timer to periodically power up the wireless device or portion thereof in response to reaching a predetermined time; a location services module determining a current location of the wireless data processing device using one or more specified location determination techniques; a transmit thread transmitting the current location of the wireless device over one or more specified communication channels; and the power circuitry powering down the wireless data processing device a second time after the current location has been transmitted.
Abstract:
A touch screen to reduce touch pixel coupling. In some examples, the touch screen can include a first display pixel and a second display pixel in a row of display pixels, where the first display pixel can be configurable to be decoupled from the second display pixel during at least a touch sensing phase of the touch screen. In some examples, the touch screen can include a display pixel having a first and a second transistor, where the second transistor can be electrically connected to a gate terminal of the first transistor, and can be diode-connected. In some examples, the touch screen can include two display pixels, each display pixel having two transistors, where two of the transistors can be electrically connected to a first gate line, and the remaining two transistors can be individually electrically connected to a second and third gate line, respectively.
Abstract:
Systems, methods, and devices to control a transistor to maintain one or more substantially constant characteristics while activated or deactivated are provided. One such system includes a transistor that receives an activation signal on a gate terminal to become activated during a first period and receives a deactivation signal on the gate terminal to become deactivated during a second period. The transistor receives an input signal on an input terminal during the first period and the second period. The input signal varies during the first period and during the second period. The transistor may have improved reliability (e.g., substantially constant on resistance RON) because a first difference between the input signal and the activation signal substantially does not vary during the first period and a second difference between the input signal and the deactivation signal substantially does not vary during the second period.
Abstract:
Systems and method of performing touch and force sensing in an electronic device. The device includes a cover and an array of touch-sensor electrodes disposed below the cover. The first array of electrodes may be configured to sense a touch on the cover using a capacitive sensing scheme. The device also includes a force-sensor drive electrode disposed below the first array of electrodes and a force-sensor sense electrode disposed below the force-sensor drive electrode. The force-sensor drive and sense electrode may be configured to sense a force on the cover. The device also includes a shared drive circuit having an output that is operatively coupled to the array of touch-sensor electrodes and the force-sensor drive electrode.