公开(公告)号：US20190073962A1

公开(公告)日：2019-03-07

申请号：US15989066

申请日：2018-05-24

Applicant: Apple Inc.

Inventor： Koorosh Aflatooni ,  Warren S. Rieutort-Louis ,  Jean-Pierre S. Guillou ,  Pierre-Yves Emelie ,  Myung-Je Cho ,  Marc Albrecht ,  Graeme M. Williams ,  Sean C. Chang ,  Zhao Wang

IPC: G09G3/3275

Abstract: A display may have an active area that includes display pixels. The display may include an inactive notch region that extends into the active area. Data lines may provide image data from display driver circuitry to the display pixels. The image data may include data signals that correspond to portions of the display that do not include pixels, such as the inactive notch region. The null data signals may cause nonuniformities in the displayed image. The null data signals may be adjusted to minimize the nonuniformities. Null data signals corresponding to the inactive notch region may be adjusted to have gray levels that gradually decrease with distance from the border between the inactive notch and the active area. All of the data signals corresponding to the inactive notch may be set to a uniform gray level.

公开(公告)号：US20180366078A1

公开(公告)日：2018-12-20

申请号：US16113132

申请日：2018-08-27

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Brijesh Tripathi ,  Christopher Philip Alan Tann ,  David S. Zalatimo ,  Guy Cote ,  Hao Nan ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz

IPC: G09G3/36

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.

公开(公告)号：US20180330695A1

公开(公告)日：2018-11-15

申请号：US15907078

申请日：2018-02-27

Applicant: Apple Inc.

Inventor： Teun R. Baar ,  Marc Albrecht ,  Tobias Jung ,  Jiaying Wu ,  Nicolas P. Bonnier ,  Nathaniel C. Begeman ,  Ian C. Hendry

IPC: G09G5/10 ,  G09G5/02 ,  G06K9/62

CPC classification number: G09G5/10 ,  G06K9/6202 ,  G09G5/02 ,  G09G2320/0276 ,  G09G2360/144 ,  G09G2360/16

Abstract: An electronic device may be provided with a display. A content generator may generate frames of image data to be displayed on the display. Control circuitry in the electronic device may be used in implementing a tone mapping engine. The tone mapping engine may display content from the content generator on the display in accordance with a content-luminance-to-display luminance mapping. The content-luminance-to-display-luminance mapping is characterized by tone mapping parameters such as a black level, a reference white level, and a specular white level. The tone mapping engine may adjust the tone mapping parameters based on ambient light levels, user brightness settings, content statistics, and display characteristics.

公开(公告)号：US10102815B2

公开(公告)日：2018-10-16

申请号：US15890517

申请日：2018-02-07

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Brijesh Tripathi ,  Christopher Philip Alan Tann ,  David S. Zalatimo ,  Guy Cote ,  Hao Nan ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz

IPC: G09G3/36

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.

公开(公告)号：US10068548B1

公开(公告)日：2018-09-04

申请号：US15614294

申请日：2017-06-05

Applicant: Apple Inc.

Inventor： Jim Chou ,  Koorosh Aflatooni ,  Marc Albrecht ,  Myung-Je Cho ,  Hyunwoo Nho ,  Christopher P. Tann ,  Mahesh B. Chappalli ,  Guy Côté

IPC: G09G5/02 ,  G06T5/00 ,  H04N9/68 ,  H04N1/58 ,  G09G3/20 ,  G09G3/00 ,  H04N1/60

Abstract: Systems and methods for improving perceived image quality of an electronic display, which includes a co-located sub-pixel that controls luminance of a first color component and an offset sub-pixel that controls luminance of a second color component. A display pipeline communicatively coupled to the electronic display determines image data, which indicates target luminance of the first, the second, and a third color component at an image pixel; determines edge parameters, which indicate whether an edge is expected to be present at the offset sub-pixel, based on a difference metric between a first image pixel block around the offset sub-pixel and a second image pixel block offset from the first image pixel block; and determines offset sub-pixel image data by filtering an image pixel group around the offset sub-pixel based at least in part on the edge parameters, wherein the offset sub-pixel image data indicates target luminance of the offset sub-pixel.

公开(公告)号：US20180247609A1

公开(公告)日：2018-08-30

申请号：US15442296

申请日：2017-02-24

Applicant: Apple Inc.

Inventor： Ameya Joshi ,  Marc Albrecht ,  Sean Chang ,  Tobias Jung

IPC: G09G5/10 ,  G09G3/34 ,  G09G3/20

Abstract: Systems, methods, and computer readable media to improve the operation of display systems are disclosed. In general, techniques are disclosed for dynamically adjusting backlight elements based on image content. More particularly, a backlight element's intensity may be targeted for boosting (i.e., increasing) based on content of the backlight element's corresponding image region, where after a check may be made to determine if the proposed increase is likely to risk generation of a halo. If the proposed intensity increase would risk a halo, the backlight element's proposed intensity may be dimmed. Repeating the boost/dim cycle in an iterative fashion permits an image to be displayed with brighter highlights and deeper blacks.

公开(公告)号：US20180108327A1

公开(公告)日：2018-04-19

申请号：US15783831

申请日：2017-10-13

Applicant: Apple Inc.

Inventor： Tobias Jung ,  Marc Albrecht ,  Sean C. Chang

IPC: G09G5/10 ,  G06T5/40

CPC classification number: G09G5/10 ,  G06T5/008 ,  G06T5/40 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20192 ,  G09G5/026 ,  G09G5/06 ,  G09G2320/0276 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2360/144 ,  G09G2360/16

Abstract: Systems, methods, and computer readable media to improve the operation of display systems are described herein. In general, techniques are disclosed for ambient and content adaptive local tone mapping operations that improve display readability under bright ambient light conditions. More particularly, techniques disclosed herein improve contrast and brightness of dark image content while preserving bright areas. The disclosed architecture and operational methodologies generate high contrast images (e.g., amplifying dark regions while preserving bright content), preserve uniform backgrounds (e.g., static background pixels), are stabile in the face of local and global histogram changes (e.g., background not affected by small moving objects such as a mouse pointer), and provide near seamless fade-in and fad-out transitions.

公开(公告)号：US09620081B2

公开(公告)日：2017-04-11

申请号：US14477454

申请日：2014-09-04

Applicant: Apple Inc.

Inventor： Brijesh Tripathi ,  Peter F. Holland ,  Marc Albrecht ,  Christopher P. Tann

IPC: G09G5/10 ,  G09G5/36 ,  G09G3/20 ,  G09G3/34 ,  G09G5/12

CPC classification number: G09G5/10 ,  G09G3/2044 ,  G09G3/3406 ,  G09G5/12 ,  G09G5/36 ,  G09G2320/0646 ,  G09G2330/021 ,  G09G2340/10 ,  G09G2360/144 ,  G09G2370/04

Abstract: Systems, apparatuses, and methods for synchronizing backlight adjustments to frame updates in a display pipeline. A change in the ambient light is detected and as a result, backlight settings are adjusted. To offset a reduction in the backlight, the color intensity in the frames is increased. While the change in ambient light is detected asynchronously, the adjustment to the backlight settings and color intensity is synchronized to a frame update via a virtual channel for the auxiliary channel of the display interface.

公开(公告)号：US20160335958A1

公开(公告)日：2016-11-17

申请号：US14918402

申请日：2015-10-20

Applicant: Apple Inc.

Inventor： Yi Huang ,  Chenhua You ,  Gabriel Marcu ,  Jun Qi ,  Marc Albrecht

IPC: G09G3/34 ,  F21V8/00 ,  G09G3/36 ,  G02F1/1335

CPC classification number: G09G3/3413 ,  G02B6/0073 ,  G02F1/133603 ,  G02F1/133621 ,  G02F2001/133601 ,  G02F2001/133614 ,  G02F2202/36 ,  G02F2203/21 ,  G02F2203/60 ,  G09G3/3607 ,  G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/041 ,  G09G2320/0646 ,  G09G2360/16

Abstract: An electronic device may have a display such as a liquid crystal display. The display may have an array of pixels that display images to a user. Backlight structures may provide the array of pixels with backlight illumination at a backlight illumination level. The backlight structures may have a light source with an array of light-emitting diodes and photoluminescent material that is pumped by pump light from the light-emitting diodes. The backlight illumination may experience color variations as a function of the backlight illumination level. Circuitry in the electronic device may be used to implement a backlight level color compensator. The backlight level color compensator may apply color correction factors to the image data of the displayed images to compensate for variations in color of the image data due to variations in backlight illumination level and operating temperature.

Abstract translation: 电子设备可以具有诸如液晶显示器的显示器。 显示器可以具有向用户显示图像的像素阵列。 背光结构可以在背光照明级别提供具有背光照明的像素阵列。 背光结构可以具有通过泵浦光从发光二极管泵浦的发光二极管和光致发光材料的阵列的光源。 背光照明可以经历作为背光照明水平的函数的颜色变化。 电子设备中的电路可以用于实现背光级颜色补偿器。 背光级颜色补偿器可以对所显示的图像的图像数据应用颜色校正因子，以补偿由于背光照明水平和操作温度的变化引起的图像数据的颜色变化。

公开(公告)号：US20160277706A1

公开(公告)日：2016-09-22

申请号：US14659723

申请日：2015-03-17

Applicant: APPLE INC.

Inventor： Christopher P. Tann ,  Chaohao Wang ,  David S. Zalatimo ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz ,  Satish S. Iyengar

IPC: H04N7/01 ,  G06F1/32 ,  G09G5/00

CPC classification number: H04N7/0127 ,  G06F1/3218 ,  G06F1/3265 ,  G09G5/001 ,  G09G2330/021 ,  H04N7/0115 ,  Y02D10/153

Abstract: Systems and methods for controlling operation of an electronic display are provided. One embodiment describes an electronic display, which includes a display driver that writes image frames to pixels of the electronic display with a first refresh rate or a second refresh rate; and a timing controller that receives a plurality of image frames from an image source, in which the plurality of image frames are displayed on the electronic display to play video content; detects a cadence with which the plurality of image frames are received from the image source; and, based at least in part on the cadence of the plurality of image frames, instructs the display driver to write each of the plurality of image frames either as a single image frame at the first refresh rate or an image frame at the first refresh rate followed by a repeat of the image frame at the second refresh rate.

Abstract translation: 提供了一种用于控制电子显示器操作的系统和方法。 一个实施例描述了一种电子显示器，其包括以第一刷新率或第二刷新率将图像帧写入电子显示器的像素的显示驱动器; 以及定时控制器，其从图像源接收多个图像帧，其中所述多个图像帧在所述电子显示器上显示以播放视频内容; 从图像源检测接收到多个图像帧的节奏; 并且至少部分地基于多个图像帧的节奏，指示显示驱动器将多个图像帧中的每一个作为第一刷新率的单个图像帧或以第一刷新率的图像帧进行写入 随后以第二刷新率重复图像帧。