公开(公告)号：US09830849B2

公开(公告)日：2017-11-28

申请号：US14617564

申请日：2015-02-09

Applicant: APPLE INC.

Inventor： Chaohao Wang ,  David S. Zalatimo ,  Lei Zhao ,  Christopher P. Tann ,  Paolo Sacchetto ,  Sandro H. Pintz ,  Yi Huang ,  Jun Qi

IPC: G09G3/36 ,  G09G3/20

CPC classification number: G09G3/2092 ,  G09G3/20 ,  G09G2310/0254 ,  G09G2310/04 ,  G09G2310/08 ,  G09G2320/0266 ,  G09G2340/0435

Abstract: One embodiment describes an electronic display that displays image frames with a first refresh rate or a second refresh rate, in which the second refresh rate is lower than the first refresh rate; a display driver that writes the image frames by applying voltage to a display panel; and a timing controller that receives first image data from an image source, in which the first image data describes a first image frame and a first desired refresh rate equal to the second fresh rate; and that instructs the display driver to apply a first set of voltage polarities to the display panel to display first image frame at the first refresh rate and to apply a second set of voltage polarities to the display the first image frame at the second refresh rate when polarity of inversion imbalance accumulated is equal to polarity of the first set of voltage polarities.

公开(公告)号：US09761188B2

公开(公告)日：2017-09-12

申请号：US14640931

申请日：2015-03-06

Applicant: APPLE INC.

Inventor： Fenghua Zheng ,  Howard H. Tang ,  James C. Aamold ,  Sandro H. Pintz ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3655 ,  G09G2320/0223 ,  G09G2320/029 ,  G09G2340/16

Abstract: Methods and systems for compensating for VCOM variations include determining a voltage change in pixels between frames to be displayed on an electronic display. Based on the determined voltage change, VCOM variation is calculated based on coupling the VCOM to one or more data lines of the electronic display. VCOM compensation is determined and applied to offset for the VCOM variation. Using the VCOM offset, subsequent pixel content for the one or more pixels is written using the compensated VCOM.

公开(公告)号：US09743036B2

公开(公告)日：2017-08-22

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 ,  G09G5/00 ,  G06F1/32

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.

公开(公告)号：US09678916B2

公开(公告)日：2017-06-13

申请号：US14500944

申请日：2014-09-29

Applicant: Apple Inc.

Inventor： David W. Lum ,  Thomas J. Wilson ,  Paolo Sacchetto ,  Sandro H. Pintz ,  Fenghua Zheng

IPC: G06F13/36 ,  G06F13/42

CPC classification number: G06F13/4221

Abstract: A method for simplifying the host-to-display subsystem communications and consolidating the non-volatile memory requirements into a PMIC (power management integrated circuit) is disclosed. Hardware and software resource reduction in both the client devices (located in the display subsystem) and the host System on a Chip (SOC) can be realized with a novel PMIC design. The novel PMIC design achieves the resource reduction by providing for the following features: (1) Single-point communication, (2) Single-point notification, (3) Client device status storage, (4) Client device initialization from PMIC non-volatile memory, and (5) Subsystem calibration retrieval from PMIC non-volatile memory.

公开(公告)号：US09653029B2

公开(公告)日：2017-05-16

申请号：US14558663

申请日：2014-12-02

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Szu-Hsien Lee ,  Paolo Sacchetto ,  Shih Chang Chang ,  Chun-Yao Huang ,  Paul S. Drzaic

IPC: G09G3/36 ,  G09G3/32

CPC classification number: G09G3/3611 ,  G09G3/32 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/103 ,  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：US09652816B1

公开(公告)日：2017-05-16

申请号：US14500570

申请日：2014-09-29

Applicant: Apple Inc.

Inventor： Peter F. Holland ,  Brijesh Tripathi ,  Joshua P. de Cesare ,  Arthur L. Spence ,  Christopher P. Tann ,  Paolo Sacchetto

IPC: G06T13/00 ,  G06T1/20

CPC classification number: G06T13/00 ,  G06T2200/28 ,  G09G5/39 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2360/18

Abstract: Systems, apparatuses, and methods for adjusting the frame refresh rate used for driving frames to a display. A display pipeline is configured to drive a display using a reduced frame refresh rate in certain scenarios. The reduced frame refresh rate may be specified in frame packets which contain configuration data for processing corresponding frames. The display pipeline may drive idle frames to the display to generate the reduced frame refresh rate. When a touch event is detected, the display pipeline may override the reduced frame refresh rate and instead utilize a standard frame refresh rate until all of the frames corresponding to stored frame packets have been processed.

公开(公告)号：US09501993B2

公开(公告)日：2016-11-22

申请号：US14155292

申请日：2014-01-14

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

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.

公开(公告)号：US20160275897A1

公开(公告)日：2016-09-22

申请号：US14660619

申请日：2015-03-17

Applicant: APPLE INC.

Inventor： Hung Sheng Lin ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2320/0209 ,  G09G2320/029 ,  G09G2330/06 ,  G09G2330/08

Abstract: Devices and methods related to liquid crystal displays (LCDs) are provided. For example, such an electronic device may include an LCD with a slew rate control unit that adjusts a slew rate for source drivers of the LCD. The slew rate may be adjusted differently for each source driver and for each frame of data signal delivered by the source driver. Individually adjusting the slew rate of the source driver enables the LCD to respond to or reduce noise within the LCD that may otherwise contribute to flickering or other unwanted display events.

Abstract translation: 提供与液晶显示器（LCD）相关的设备和方法。 例如，这样的电子设备可以包括具有用于调整LCD的源极驱动器的转换速率的转换速率控制单元的LCD。 对于每个源驱动器和源驱动器传送的每个数据信号帧，可以不同地调整转换速率。 单独调整源驱动器的转换速率使LCD能够响应或降低LCD内的噪声，否则可能会导致闪烁或其他不需要的显示事件。

公开(公告)号：US20160260407A1

公开(公告)日：2016-09-08

申请号：US14640931

申请日：2015-03-06

Applicant: APPLE INC.

Inventor： Fenghua Zheng ,  Howard H. Tang ,  James C. Aamold ,  Sandro H. Pintz ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G09G3/36 ,  G09G3/00

CPC classification number: G09G3/3614 ,  G09G3/3655 ,  G09G2320/0223 ,  G09G2320/029 ,  G09G2340/16

Abstract: Methods and systems for compensating for VCOM variations include determining a voltage change in pixels between frames to be displayed on an electronic display. Based on the determined voltage change, VCOM variation is calculated based on coupling the VCOM to one or more data lines of the electronic display. VCOM compensation is determined and applied to offset for the VCOM variation. Using the VCOM offset, subsequent pixel content for the one or more pixels is written using the compensated VCOM.

Abstract translation: 用于补偿VCOM变化的方法和系统包括确定要在电子显示器上显示的帧之间的像素中的电压变化。 基于确定的电压变化，基于将VCOM耦合到电子显示器的一个或多个数据线来计算VCOM变化。 VCOM补偿被确定并应用于偏移VCOM变化。 使用VCOM偏移，使用补偿的VCOM写入一个或多个像素的后续像素内容。

公开(公告)号：US09318069B2

公开(公告)日：2016-04-19

申请号：US14155297

申请日：2014-01-14

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

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。