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：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：US20160300546A1

公开(公告)日：2016-10-13

申请号：US14855733

申请日：2015-09-16

Applicant: Apple Inc.

Inventor： Fenghua Zheng ,  Christopher P. Tann ,  David S. Zalatimo ,  James E. C. Brown ,  Sandro H. Pintz

IPC: G09G5/00

CPC classification number: G09G3/2096 ,  G09G3/20 ,  G09G2310/0267 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2310/06 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display may have an array of pixels controlled by display driver circuitry. Gate driver circuitry supplies gate line signals to rows of the pixels. The gate driver circuitry may include gate driver integrated circuits. Each gate driver integrated circuit may have a shift register that supplies the gate line signals to the rows of pixels. The display driver circuitry supplies a clock signal to the gate driver integrated circuits. Each gate driver integrated circuit may have one or more clock trees that are selectively enable and disabled. Each gate driver integrated circuit may have a controller and a buffer that is controlled by a control signal from the controller. The buffer may be adjusted to supply or to not supply the clock signal to an associated clock tree in that gate driver integrated circuit.

Abstract translation: 显示器可以具有由显示驱动器电路控制的像素阵列。 栅极驱动器电路将栅极线信号提供给像素的行。 栅极驱动器电路可以包括栅极驱动器集成电路。 每个栅极驱动器集成电路可以具有将栅极线信号提供给像素行的移位寄存器。 显示驱动器电路将时钟信号提供给栅极驱动器集成电路。 每个栅极驱动器集成电路可以具有选择性地使能和禁止的一个或多个时钟树。 每个栅极驱动器集成电路可以具有由来自控制器的控制信号控制的控制器和缓冲器。 可以调整缓冲器以提供或不向该栅极驱动器集成电路中的相关联的时钟树提供时钟信号。

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。

公开(公告)号：US20160260416A1

公开(公告)日：2016-09-08

申请号：US14636693

申请日：2015-03-03

Applicant: APPLE INC.

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

IPC: G09G5/18

CPC classification number: G09G5/005 ,  G09G2340/0407 ,  G09G2340/0435 ,  H04N7/0127

Abstract: One embodiment of the present disclosure describes an electronic display. The electronic display includes a display driver that write image frames to pixels of the electronic display with a first refresh rate or a second refresh rate, in which the second refresh rate is less than the first refresh rate. Additionally, the electronic display includes a timing controller that receives image frames from an image source, in which one or more of the image frames are configured to be displayed on the display panel to play video content; determines a capture rate of the video content based at least in part on a cadence with which the image frames are received, in which the capture rate describes a rate at which each of the one or more image frames was captured by an image sensor; and instructs the display driver to write the one or more of the image frames at the second refresh when the second refresh rate is an integer multiple of the capture rate.

Abstract translation: 本公开的一个实施例描述了电子显示器。 电子显示器包括显示驱动器，其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，其中第二刷新率小于第一刷新率。 此外，电子显示器包括定时控制器，其从图像源接收图像帧，其中一个或多个图像帧被配置为在显示面板上显示以播放视频内容; 至少部分地基于接收到图像帧的节奏来确定视频内容的捕获率，其中捕获速率描述一个或多个图像帧中的每一个被图像传感器捕获的速率; 并且当第二刷新率是捕获率的整数倍时，指示显示驱动器在第二次刷新时写入一个或多个图像帧。

公开(公告)号：US11024243B2

公开(公告)日：2021-06-01

申请号：US17034894

申请日：2020-09-28

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：US20210012733A1

公开(公告)日：2021-01-14

申请号：US17034894

申请日：2020-09-28

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：US20180166032A1

公开(公告)日：2018-06-14

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

CPC classification number: G09G3/3614 ,  G09G2320/0204 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/046 ,  G09G2340/0435 ,  G09G2360/16

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：US09984608B2

公开(公告)日：2018-05-29

申请号：US14986181

申请日：2015-12-31

Applicant: Apple Inc.

Inventor： Paolo Sacchetto ,  Christopher P. Tann ,  Taesung Kim ,  Sandro H. Pintz ,  Marc Albrecht ,  Chaohao Wang ,  David S. Zalatimo ,  Fenghua Zheng ,  Zhibing Ge

IPC: G09G3/20 ,  G09G3/36 ,  H04N1/60 ,  H04N9/73

CPC classification number: G09G3/20 ,  G09G2310/0254 ,  G09G2310/063 ,  G09G2310/08 ,  G09G2320/0204 ,  G09G2340/0435

Abstract: System and method for improving displayed image quality of an electronic display that displays a first image frame by applying a first voltage to a display pixel and a second image frame directly before the first image frame by applying a second voltage to the display pixel. A display pipeline is communicatively coupled to the electronic display and receives first image data corresponding with the first image frame, where the image data includes a first grayscale value corresponding with the display pixel. Additionally the display pipeline determines an inversion balancing grayscale offset based at least in part on the first grayscale value when polarity of the first voltage and polarity of the second voltage are the same and determines magnitude of the first voltage by applying the inversion balancing grayscale offset to the first grayscale value to reduce likelihood of a perceivable luminance spike when displaying the first image frame.

公开(公告)号：US20160351138A1

公开(公告)日：2016-12-01

申请号：US14722620

申请日：2015-05-27

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

CPC classification number: G09G3/3614 ,  G09G2320/0204 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/046 ,  G09G2340/0435 ,  G09G2360/16

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.

Abstract translation: 电子设备可以产生要显示在显示器上的内容。 显示器可以具有用于显示内容的图像帧的液晶显示像素阵列。 可以以正极性和负极性显示图像帧以帮助减少电荷积累效应。 电荷累积跟踪器可以分析图像帧以确定何时存在电荷累积过多的风险。 电荷累积跟踪器可以分析关于灰度级，帧持续时间和帧极性的信息。 电荷积累跟踪器可以计算整个图像帧的电荷累积度量，或者可以分别处理每个帧的子区域。 当分区域被单独处理时，每个子区域可以被单独地监视以产生过量电荷累积的风险。