公开(公告)号：US11158259B2

公开(公告)日：2021-10-26

申请号：US17088263

申请日：2020-11-03

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Chih-Wei Yeh ,  Chin-Wei Lin ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Injae Hwang ,  Jie Won Ryu ,  Junhua Tan ,  Paolo Sacchetto ,  Rui Zhang ,  Shengkui Gao ,  Sun-Il Chang ,  Wei H. Yao ,  Howard H. Tang

IPC: G09G3/3233 ,  G09G3/3275

Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.

公开(公告)号：US20210304703A1

公开(公告)日：2021-09-30

申请号：US17217827

申请日：2021-03-30

Applicant: Apple Inc.

Inventor： Yang Xu ,  Jie Won Ryu ,  Kingsuk Brahma ,  Koorosh Aflatooni ,  Marc Joseph DeVincentis ,  Mohammad Ali Jangda ,  Paolo Sacchetto ,  Shengkui Gao ,  Sinan Alousi ,  Yafei Bi ,  Chun Lu

IPC: G09G5/10

Abstract: Systems, methods, and devices are provided for providing intra-frame luminance scaling to avoid drawing excessive power while still providing exceptional brightness. An instantaneous average pixel luminance of an electronic display may be determined. The instantaneous average pixel luminance may correspond to an amount of light currently being emitted by the electronic display due to a previous image frame and a current image frame. Based at least in part on the instantaneous average pixel luminance, the luminance of a subset of pixels of image data of the current image frame may be adjusted, thereby allowing the electronic display to operate at a relatively high brightness level without exceeding a power limit.

公开(公告)号：US20210304673A1

公开(公告)日：2021-09-30

申请号：US17191009

申请日：2021-03-03

Applicant: Apple Inc.

Inventor： Shengkui Gao ,  Haifeng Li ,  Sinan Alousi ,  Marc Joseph DeVincentis ,  Yafei Bi ,  Hung Sheng Lin ,  Yi Qiao ,  Paolo Sacchetto ,  Weijun Yao ,  Pierre-Yves Emelie ,  Maofeng Yang ,  Yue Jack Chu

IPC: G09G3/3233

Abstract: A system may include an electronic display panel having pixels, where each pixel may emit light based on a respective programming signal. The system may include a memory storing a map. The processing circuitry may determine a function for each pixel from the map. The processing circuitry may determine a respective control signal based on the function and a target brightness level for each pixel to generate multiple control signals, where the respective control signal is used to generate the respective programing signal for each pixel. The processing circuitry may determine a scaling factor based at least in part on the first map and may scale at least a subset of the multiple control signals based at least in part on the scaling factor.

公开(公告)号：US20210142736A1

公开(公告)日：2021-05-13

申请号：US17150818

申请日：2021-01-15

Applicant: Apple Inc.

Inventor： Cheng Chen ,  Jason C. Sauers ,  Fletcher R. Rothkopf ,  David W. Lum ,  Chun-Yao Huang ,  Enkhamgalan Dorjgotov ,  Graham B. Myhre ,  Bennett S. Wilburn ,  Paolo Sacchetto ,  Shih Chang Chang ,  Wonjae Choi ,  Cheuk Chi Lo

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/3225 ,  G09G3/20 ,  G09G3/36

Abstract: An electronic device such as a head-mounted device may have displays. The display may have regions of lower and higher resolution to reduce data bandwidth and power consumption for the display while preserving satisfactory image quality. Data lines may be shared by lower and higher resolution portions of a display or different portions of a display with different resolutions may be supplied with different numbers of data lines. Data line length may be varied in transition regions between lower resolution and higher resolution portions of a display to reduce visible discontinuities between the lower and higher resolution portions. The lower and higher resolution portions of the display may be dynamically adjusted using dynamically adjustable gate driver circuitry and dynamically adjustable data line driver circuitry.

公开(公告)号：US10885852B2

公开(公告)日：2021-01-05

申请号：US16893373

申请日：2020-06-04

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chih-Wei Yeh ,  Yunhui Hou ,  Chaohao Wang ,  Wei H. Yao ,  Paolo Sacchetto ,  Derek K. Shaeffer ,  Henry C. Jen ,  Shingo Hatanaka ,  Hasan Akyol ,  Mahdi Farrokh Baroughi ,  Hopil Bae

IPC: G09G3/3258 ,  G09G3/3233

Abstract: An electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a set of degradation ratios and gamma tap points for each brightness setting of the display based at least in part on a reconstructed current-voltage curve.

公开(公告)号：US10748340B1

公开(公告)日：2020-08-18

申请号：US15989756

申请日：2018-05-25

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Aleksandr M. Movshovich ,  Arthur Y. Zhang ,  Chaohao Wang ,  Moinul H. Khan ,  Paolo Sacchetto ,  Yunhui Hou

IPC: G06T19/00 ,  G02B27/01 ,  H04N5/232

Abstract: An electronic device may have a camera and a display. The display may be configured to display virtual reality content for a user in which no real-world content from the camera is displayed or mixed reality content in which a combination of real-world content from the camera and overlaid virtual reality content is displayed. Control circuitry in the device may adjust the display and camera while transitioning between virtual reality and mixed reality modes. The control circuitry may reconfigure the camera to exhibit a desired frame rate immediately upon transitioning from virtual reality mode to mixed reality mode. Transitions between modes may be accompanied by smooth transitions between frame rates to avoid visible artifacts on the display. The camera frame rate may be synchronized to the display frame rate for at least part of the transition between the virtual reality and mixed reality modes.

公开(公告)号：US10559251B2

公开(公告)日：2020-02-11

申请号：US15900733

申请日：2018-02-20

Applicant: Apple Inc.

Inventor： Abhinav Pathak ,  Conor J. O'Reilly ,  Shashi K. Dua ,  Udaykumar R. Raval ,  Christopher W. Chaney ,  Amit K. Vyas ,  Albert S. Liu ,  Roberto Alvarez ,  Rohit Mundra ,  Vladislav Sahnovich ,  Patrick Y. Law ,  Paul M. Thompson ,  Paolo Sacchetto ,  Chaohao Wang ,  Arthur L. Spence ,  Jean-Pierre Simon Guillou ,  Mohammad Ali Jangda ,  Christopher Edward Glazowski ,  Yifan Zhang

IPC: G09G3/3208

Abstract: Circuits, methods, and apparatus that may estimate the power being consumed by an OLED display screen of an electronic device, may provide further information about that power usage, may modify or change functions performed by the electronic device based on that power usage, and may inform an application's developer about the amount of power being used by the electronic device while the electronic device is running the application. One example may estimate the power being used by an OLED display screen of an electronic device by determining the content of images being displayed during a duration. The estimated power may then be presented to a user. The estimated power may be used in decisions to modify or change parameters of the screen or other device components.

公开(公告)号：US10446116B2

公开(公告)日：2019-10-15

申请号：US15673138

申请日：2017-08-09

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang ,  Cheuk Chi Lo ,  Chun-Yao Huang ,  Howard Tang ,  Paolo Sacchetto

IPC: G09G5/10 ,  G01K13/00 ,  G01K7/34 ,  G09G3/20 ,  G01K1/02 ,  G01K7/01 ,  G01K7/18 ,  G06F3/044 ,  G09G3/36 ,  G09G3/3225 ,  G09G3/34

Abstract: An apparatus is disclosed. In some examples, the apparatus comprises a display panel comprising a plurality of display pixels. In some examples, the apparatus comprises a plurality of temperature sensors disposed at different portions the display panel, wherein the plurality of temperature sensors comprise ratioed pairs of thin film transistors and the ratioed pairs of thin film transistors are formed on the display panel. In some examples, the apparatus comprises control circuitry for changing illumination properties of the plurality of display pixels based on changes is temperature detected by a proximate temperature sensor of the plurality of temperature sensors. In some examples, the ratioed pairs of thin film transistors are operated in a sub-threshold mode.

公开(公告)号：US10395349B1

公开(公告)日：2019-08-27

申请号：US15658169

申请日：2017-07-24

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G06T1/60 ,  G06T5/00 ,  G02F1/29

Abstract: An electronic device such as a head-mounted display or other display system may have a pair of adjustable focal length lenses. Control circuitry in the head-mounted display may adjust the adjustable focal length lenses so that the adjustable focal length lenses exhibit a series of different focal lengths. A graphics processor may generate undistorted image frames. The adjustable focal length lenses may exhibit a different amount of lens distortion at each focal length. To compensate for these different amounts of lens distortion, a distortion compensation circuit may predistort the undistorted image frames by an appropriate amount for each focal length. The distortion compensation circuit may include mapping and interpolation circuitry and look-up tables that store mapping and interpolation data for each of the focal lengths.

公开(公告)号：US20190180669A1

公开(公告)日：2019-06-13

申请号：US15944470

申请日：2018-04-03

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Paolo Sacchetto ,  Yingying Tang ,  Hyunwoo Nho ,  Sebastian Knitter ,  Chaohao Wang ,  Sheng Zhang

IPC: G09G3/20 ,  G09G3/34 ,  G09G3/36

Abstract: An electronic device that includes processing circuitry configured to generate a frame of image data that has a frame duration is provided. The electronic device includes a display that has a plurality of pixels. Each of the plurality of pixels displays image data from the frame of image data for a pixel emission period that is less than the frame duration. A first pixel of a column of pixels of the plurality of pixels begins displaying the image data from the frame of image data at a first time for a first duration. A second pixel of the column of pixels that is adjacent to the first pixel begins displaying the image data from the frame of image data at a second time for a second duration. The first and second durations are equal to the pixel emission period. The second time begins after the first duration of time.