公开(公告)号：US10964275B2

公开(公告)日：2021-03-30

申请号：US16418748

申请日：2019-05-21

申请人： Apple Inc.

发明人： Duane M. Petrovich ,  Sean C. Chang ,  Tobias Jung ,  Pierre-Yves Emelie ,  Marc Albrecht ,  Chen Zheng ,  Andrei E. Toma ,  Kevin W. Sliech ,  Mingxia Gu ,  Wei H. Yao

IPC分类号： G09G3/34 ,  G02F1/13357 ,  G02F1/1335

摘要： A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.

公开(公告)号：US20240005711A1

公开(公告)日：2024-01-04

申请号：US18214571

申请日：2023-06-27

申请人： APPLE INC.

发明人： Ryan J. Dunn ,  Duane M. Petrovich ,  Eric L. Chien ,  Julia M. Sohnen ,  Nicholas A. Sims ,  Ryan J. Garrone ,  Sarah E. Carey ,  Devyn M. Byrnes

IPC分类号： G07C9/00 ,  G07C9/26 ,  G06V40/16 ,  G06V10/141

CPC分类号： G07C9/00563 ,  G07C9/26 ,  G07C9/00309 ,  G06V40/172 ,  G06V10/141 ,  G07C2009/00769

摘要： A method for selectively granting access to an access-controlled space includes obtaining an image of the person requesting access using a camera that is located inside the access-controlled space, and permitting an authorized user of the access-controlled space to grant authorization using the image.

公开(公告)号：US20200335047A1

公开(公告)日：2020-10-22

申请号：US16418748

申请日：2019-05-21

申请人： Apple Inc.

发明人： Duane M. Petrovich ,  Sean C. Chang ,  Tobias Jung ,  Pierre-Yves Emelie ,  Marc Albrecht ,  Chen Zheng ,  Andrei E. Toma ,  Kevin W. Sliech ,  Mingxia Gu ,  Wei H. Yao

IPC分类号： G09G3/34 ,  G02F1/1335

摘要： A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.

公开(公告)号：US10571744B1

公开(公告)日：2020-02-25

申请号：US16388496

申请日：2019-04-18

申请人： Apple Inc.

发明人： Sean C. Chang ,  Tobias Jung ,  Marc Albrecht ,  Abdeslam Hafidi ,  Jun Qi ,  Duane M. Petrovich ,  Mingxia Gu ,  Xiang Fang ,  Pierre-Yves Emelie ,  Wei H Yao

IPC分类号： G02F1/1335 ,  G09G3/36 ,  G09G3/34

摘要： A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.