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    Display With Localized Brightness Adjustment Capabilities
    41.
    发明申请
    Display With Localized Brightness Adjustment Capabilities 审中-公开

    公开(公告)号：US20200035202A1

    公开(公告)日：2020-01-30

    申请号：US16584807

    申请日：2019-09-26

    申请人： Apple Inc.

    发明人： Koorosh Aflatooni ,  Minhyuk Choi ,  Mohammad Ali Jangda ,  Sang Y. Youn ,  Yafei Bi ,  Jean-Pierre Guillou ,  Wei Y. Yao

    IPC分类号： G09G5/10 ,  G06K9/00

    摘要： An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.

    LOW POWER DISPLAY ON MODE FOR A DISPLAY DEVICE
    42.
    发明申请
    LOW POWER DISPLAY ON MODE FOR A DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190340998A1

    公开(公告)日：2019-11-07

    申请号：US16384716

    申请日：2019-04-15

    申请人： Apple Inc.

    发明人： Yafei Bi ,  Lei He ,  Mohammad B. Vahid Far ,  Mir B. Ghaderi ,  Venu Madhav Duggineni ,  Vanessa C. Heppolette ,  Joshua P. De Cesare ,  Hyuck-Jae Lee

    IPC分类号： G09G5/00

    摘要： Systems, methods, and apparatus to transition a display device between operating modes using a single dedicated pin of a circuit connected to the display device. The dedicated pin can receive a packet signal corresponding to an operating mode for the display device, and the circuit can thereafter cause the display device to transition into the desired operating mode in response to receiving the packet signal. The operating mode can be a low power on mode where an interface connected to the circuit is deactivated and at least some circuitry of the display device is throttled or powered off. The display device can be driven in an all black state while in the low power on mode, thereby allowing the display device to more quickly transition out of the low power on mode compared to when the display device is completely off.

    On-chip clock calibration systems and methods for electronic device displays
    46.
    发明授权
    On-chip clock calibration systems and methods for electronic device displays 有权

    公开(公告)号：US10235927B2

    公开(公告)日：2019-03-19

    申请号：US15367143

    申请日：2016-12-01

    申请人： Apple Inc.

    发明人： Haifeng Li ,  Kingsuk Brahma ,  Yafei Bi

    IPC分类号： G09G3/36 ,  G09G3/20

    摘要： Aspects of the subject technology relate to electronic devices with displays. A display may include display control circuitry including an internal oscillator and one or more counters. The counters may be used to calibrate a display line time to a system line time to ensure that each displayed frame is synchronized with received display data frames from system circuitry for the electronic device. The counters may include a first counter that maintains a current-row count during operation of a current row of display pixels during a current display frame and a second counter that maintains a current-frame count that indicates a number of counts accumulated during the current display frame. The current-row count and the current-frame count may be referenced to the system line time during operation of each pixel row to remove any errors accumulated during operation of the previous pixel rows.

    Digital to analog converter
    47.
    发明授权
    Digital to analog converter 有权

    公开(公告)号：US10200059B2

    公开(公告)日：2019-02-05

    申请号：US15697233

    申请日：2017-09-06

    申请人： Apple Inc.

    发明人： Baris Cagdaser ,  Derek K. Shaeffer ,  Hopil Bae ,  Jesse Aaron Richmond ,  Jie Won Ryu ,  Kingsuk Brahma ,  Mohammad B. Vahid Far ,  Shingo Hatanaka ,  Yafei Bi ,  Yuichi Okuda

    IPC分类号： H03M1/78 ,  H03M1/76 ,  H03M1/74 ,  H03M1/68

    摘要： A device includes a resistor string that includes a plurality resistors with voltage taps disposed therebetween. The device may select one particular voltage tap of the plurality of voltage taps based on received gray level data for a pixel of a display. The device also includes a first amplifier that may be coupled to a first terminal end of the resistor string. The device additionally includes a second amplifier that may be coupled to a second terminal end of the resistor string, wherein the plurality of voltage taps may each supply a tap voltage derived from a voltage between the first amplifier and the second amplifier, wherein any tap amplifier of the device coupled to a voltage tap of the plurality of voltage taps provides a reference voltage thereto.

    COLLISION AVOIDANCE SCHEMES FOR DISPLAYS
    48.
    发明申请
    COLLISION AVOIDANCE SCHEMES FOR DISPLAYS 审中-公开

    公开(公告)号：US20190027114A1

    公开(公告)日：2019-01-24

    申请号：US15716708

    申请日：2017-09-27

    申请人： Apple Inc.

    发明人： Yue Jack Chu ,  Christopher P. Tann ,  Arthur L. Spence ,  Brad W. Simeral ,  Yafei Bi ,  Jiayi Jin ,  Ruo-Gu Huang ,  Haifeng Li ,  Weijun Yao ,  Chaohao Wang

    IPC分类号： G09G5/00 ,  G06T1/60 ,  G09G5/36

    摘要： In situations with reduced image changes, display panels, such as the ones disclosed herein, may reduce their power consumption by performing self-refresh cycles, in which they may display locally stored data in the display panel instead of retrieving it from an image buffer. Methods and circuitry for management of the self-refresh cycle may reduce jitter, luminance errors, and/or flickers that may be caused by untimely self-refresh cycles that may occur as a result of latency in the image buffer. In some implementations, the display panel may have a dedicated low latency input that notifies an arrival of an incoming image. In some implementations, the self-refresh cycles of the panel may be managed by a host or a buffer that is responsible for sending the images.

    DISPLAY SCAN TIME COMPENSATION SYSTEMS AND METHODS
    50.
    发明申请
    DISPLAY SCAN TIME COMPENSATION SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20180322823A1

    公开(公告)日：2018-11-08

    申请号：US15711696

    申请日：2017-09-21

    申请人： Apple Inc.

    发明人： Sinan Alousi ,  Haifeng Li ,  Mohammad Hajirostam ,  Yafei Bi

    IPC分类号： G09G3/20

    CPC分类号： G09G3/2096 ,  G09G3/3208 ,  G09G3/36 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2360/12

    摘要： Systems and methods for improving perceived image quality of an electronic display communicatively coupled to an image data source that outputs a synchronization control signal, which indicates when an image frame is expected to stop being written, based on a source clock signal. The electronic display includes a display pixel row, a display driver, and a timing controller. The timing controller determines a target scan time to be used to write the image frame to the display pixel row and instructs the display driver to write the image frame to the display pixel row based on the target scan time and a display block signal, in which the timing controller instructs the display driver to continue writing the image frame to display pixel row after the electronic display receives the synchronization control signal when the synchronization control signal is received before the target scan time is reached.