公开(公告)号：US20180047342A1

公开(公告)日：2018-02-15

申请号：US15691691

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Chaohao WANG ,  Szu-Hsien LEE ,  Paolo SACCHETTO ,  Shih Chang CHANG ,  Chun-Yao HUANG ,  Paul S. DRZAIC

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3266 ,  G09G3/2044 ,  G09G3/3225 ,  G09G3/3648 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2340/0435

Abstract: This application relates to methods and apparatus for refreshing a display device at various frequencies. Specifically, multiple areas of the display device can be refreshed concurrently at different frequencies. In this way, when static content is being displayed in certain areas of the display device, those certain areas can be refreshed at a lower rate than areas displaying dynamic content such as video or animation. By refreshing at lower rates, the energy consumed by the display device and subsystems associated with the display device can be reduced. Additionally, processes for reducing flicker when refreshing the display device at different refresh rates are disclosed herein.

公开(公告)号：US20170358255A1

公开(公告)日：2017-12-14

申请号：US15438448

申请日：2017-02-21

Applicant: Apple Inc.

Inventor： Chaohao WANG ,  Paolo SACCHETTO ,  Sheng ZHANG ,  Yang LI ,  Myung-Je CHO ,  Marc ALBRECHT

IPC: G09G3/20

CPC classification number: G09G3/2055 ,  G09G3/2022 ,  G09G2320/0247 ,  G09G2320/0666

Abstract: This application relates to performing certain dithering processes to eliminate display artifacts such as flicker, which can be caused by charge accumulation at the display. The dither process can be performed by a display controller that uses a group lookup method for identifying groups of dithering patterns that can be combined to expand a number of color values available to the display. The dither process can also be performed as a temporal process that incorporates groups of dithering patterns into frames and shifts a spatial arrangement of the groups of dithering patterns over a sequence of frames. Additionally, the dither process can incorporate counters that count the number of times a particular spatial arrangement of dithering patterns has been used in a sequence of frames in order that each spatial arrangement of dithering patterns will share an average count with other spatial arrangements over a sequence of frames.

公开(公告)号：US20170047027A1

公开(公告)日：2017-02-16

申请号：US15338297

申请日：2016-10-28

Applicant: Apple Inc.

Inventor： Prasanna NAMBI ,  Jason N. GOMEZ ,  Fenghua ZHENG ,  Paolo SACCHETTO ,  Sandro H. PINTZ ,  Taesung KIM ,  Christopher P. TANN ,  Marc ALBRECHT ,  David W. LUM

IPC: G09G3/36 ,  G06T1/20

CPC classification number: G09G3/3618 ,  G06T1/20 ,  G06T2210/52 ,  G09G3/36 ,  G09G3/3611 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3696 ,  G09G2310/08 ,  G09G2320/0626 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2360/18 ,  G09G2370/08

Abstract: The disclosure describes procedures for dynamically employing a variable refresh rate at an LCD display of a consumer electronic device, such as a laptop computer, a tablet computer, a mobile phone, or a music player device. In some configurations, the consumer electronic device can include a host system portion, having one or more processors and a display system portion, having a timing controller, a buffer circuit, a display driver, and a display panel. The display system can receive image data and image control data from a GPU of the host system, evaluate the received image control data to determine a reduced refresh rate (RRR) for employing at the display panel, and then transition to the RRR, whenever practicable, to conserve power. In some scenarios, the transition to the RRR can be a transition from a LRR of 50 hertz or above to a RRR of 40 hertz or below.

Abstract translation: 本公开描述了在诸如膝上型计算机，平板计算机，移动电话或音乐播放器设备的消费电子设备的LCD显示器上动态地采用可变刷新率的过程。 在一些配置中，消费电子设备可以包括具有一个或多个处理器的主机系统部分和具有定时控制器，缓冲电路，显示驱动器和显示面板的显示系统部分。 显示系统可以从主机系统的GPU接收图像数据和图像控制数据，评估所接收的图像控制数据，以确定在显示面板上使用的刷新率降低（RRR），然后在切实可行的情况下转换到RRR ，以节省权力。 在某些情况下，过渡到RRR可以是从50赫兹或更高的LRR到40赫兹或更低的RRR的转换。

公开(公告)号：US20170018219A1

公开(公告)日：2017-01-19

申请号：US14973517

申请日：2015-12-17

Applicant: Apple Inc.

Inventor： Chaohao WANG ,  Paolo SACCHETTO ,  Marc ALBRECHT ,  Christopher P. TANN ,  Shih-Chyuan FAN JIANG ,  Howard H. TANG ,  James E. C. BROWN ,  Zhibing GE

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2320/0204 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0693

Abstract: This application relates to systems, methods, and apparatus for compensating voltage for pixels of a display panel based on the location of the pixels within the display panel. An amount of voltage compensation is assigned to each pixel or a group of pixels within the display panel in accordance with a calibration of the display panel. During operation of the display panel, pixel data is generated for a location of the display panel, and the pixel data is modified according to the amount of voltage compensation corresponding to the location. By modifying the pixel data in this way, spatial variations in voltage across the display panel can be mitigated in order to reduce the occurrence of certain display artifacts at the display panel.

Abstract translation: 本申请涉及用于基于显示面板内的像素的位置来补偿显示面板的像素的电压的系统，方法和装置。 根据显示面板的校准，向显示面板内的每个像素或一组像素分配电压补偿量。 在显示面板的操作期间，为显示面板的位置生成像素数据，并且根据对应于该位置的电压补偿量修改像素数据。 通过以这种方式修改像素数据，可以减轻显示面板上的电压的空间变化，以便减少显示面板上某些显示伪像的发生。

公开(公告)号：US20160320898A1

公开(公告)日：2016-11-03

申请号：US15089432

申请日：2016-04-01

Applicant: Apple Inc.

Inventor： Howard TANG ,  Christoph H. KRAH ,  Paolo SACCHETTO ,  Chaohao WANG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  G09G3/00 ,  G09G3/3655 ,  G09G3/3677 ,  G09G2310/0291

Abstract: A system is disclosed. The system can comprise dynamic drive circuitry configured to drive a plurality of electrodes on a touch screen. The system can also comprise a switching circuit configured to selectively couple the dynamic drive circuitry to one or more of the plurality of electrodes. The system can also comprise a display circuitry configured to selectively update a plurality of display pixels on the touch screen. The dynamic drive circuitry can be configured to set its output based on which of the plurality of electrodes are selectively coupled to the first drive circuitry and which of the display pixels are updated by the display circuitry.

Abstract translation: 公开了一种系统。 该系统可以包括被配置为在触摸屏上驱动多个电极的动态驱动电路。 该系统还可以包括被配置为选择性地将动态驱动电路耦合到多个电极中的一个或多个的开关电路。 该系统还可以包括被配置为选择性地更新触摸屏上的多个显示像素的显示电路。 动态驱动电路可以被配置为基于多个电极中的哪一个选择性地耦合到第一驱动电路并且由显示电路更新哪个显示像素来设置其输出。