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    Multi-zoned variable VCOM control
    31.
    发明授权
    Multi-zoned variable VCOM control 有权

    公开(公告)号：US10380937B2

    公开(公告)日：2019-08-13

    申请号：US15246666

    申请日：2016-08-25

    Applicant: Apple Inc.

    Inventor： Howard H. Tang ,  Paolo Sacchetto ,  Chaohao Wang ,  Szu-Hsien Lee ,  Patrick Bennett ,  Fenghua Zheng

    IPC: G09G3/20 ,  G09G3/36

    Abstract: The disclosure relates to systems and methods for reducing VCOM settling periods. A number of pixels is sub-divided into a plurality of regions. The pixels are configured to transmit light. A common voltage (VCOM) driving circuit is configured to drive a common electrode of the pixels. Moreover, each of a number of VCOM driving circuits includes a variable resistor configured to be driven to a resistance level based at least in part on which region of the plurality of regions includes an active pixel within the region. Furthermore, a resistance level is set and based at least in part on where the active pixel is located.

    Power efficient adaptive panel pixel charge scheme
    32.
    发明授权
    Power efficient adaptive panel pixel charge scheme 有权

    公开(公告)号：US10121410B2

    公开(公告)日：2018-11-06

    申请号：US14487020

    申请日：2014-09-15

    Applicant: Apple Inc.

    Inventor： Fenghua Zheng ,  Sandro H. Pintz

    IPC: G09G3/32 ,  G09G3/3216 ,  G09G3/20

    Abstract: This application relates to systems, methods, and apparatus for reducing the power consumption of a display panel. Specifically, the embodiments discussed herein relate to a panel pixel charge scheme that allows the current output of a display driver to be modified based on the content to be displayed at the display panel. The display driver can compare current and upcoming display content in order to determine how the line voltage for one or more output lines will change over time. If, based on the comparison, the voltage for an output line is not going to vary substantially over time, the bias current output from the display driver can be modified in order to save power. The modification to the bias current can depend on the amount of change the line voltage will undergo in subsequent executions of the content data.

    Method and apparatus for simplifying communication between a host system and a display subsystem
    36.
    发明授权
    Method and apparatus for simplifying communication between a host system and a display subsystem 有权

    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.

    CONTENT-BASED VCOM DRIVING
    38.
    发明申请
    CONTENT-BASED VCOM DRIVING 有权
    基于内容的VCOM驱动

    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。

    INVERSION BALANCING COMPENSATION
    39.
    发明申请
    INVERSION BALANCING COMPENSATION 有权
    逆向平衡补偿

    公开(公告)号：US20160117971A1

    公开(公告)日：2016-04-28

    申请号：US14986181

    申请日：2015-12-31

    Applicant: Apple Inc.

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

    IPC: G09G3/20

    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.

    Abstract translation: 一种用于通过向显示像素施加第二电压来提高通过对第一图像帧之前的显示像素和第二图像帧施加第一电压来显示第一图像帧的电子显示器的显示图像质量的系统和方法。 显示管线通信地耦合到电子显示器并接收与第一图像帧对应的第一图像数据，其中图像数据包括与显示像素对应的第一灰度值。 此外，当第一电压的极性和第二电压的极性相同时，至少部分地基于第一灰度值，显示管线确定反转平衡灰度偏移，并且通过将反转平衡灰度偏移应用于第一电压的幅度来确定第一电压的幅度 第一灰度值，以在显示第一图像帧时降低可感知的亮度尖峰的可能性。

    Low power display device with variable refresh rates
    40.
    发明授权
    Low power display device with variable refresh rates 有权
    具有可变刷新率的低功率显示设备

    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。

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