公开(公告)号：US20150348487A1

公开(公告)日：2015-12-03

申请号：US14501432

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Fenghua Zheng ,  Andrew P. Aitken

IPC: G09G3/36

CPC classification number: G09G3/3611 ,  G09G2310/08 ,  G09G2330/027 ,  G09G2330/04

Abstract: Display driver circuitry loads data into display pixels. A regulator produces a power supply voltage for display driver circuitry that is measured by a monitor circuit. The monitor circuit asserts a mode selection signal in response to detection of a drop in power supply voltage during a power-down event. The display driver circuitry contains mode selection circuitry that is controlled by the mode selection signal. The mode selection circuit allows a controlled parallel driver shutdown sequence. During normal operation, the mode selection signal is deasserted and the display driver circuitry loads image data for the display into the display pixels. When the mode selection signal is asserted, mode selection circuitry and other circuitry in the display driver circuitry continue to operate during the power down so as to load safe data into the display pixels to avoid damaging the display when the display has been powered off.

Abstract translation: 显示驱动电路将数据加载到显示像素中。 调节器产生由监视器电路测量的显示驱动器电路的电源电压。 响应于在断电事件期间检测到电源电压的下降，监视电路断言模式选择信号。 显示驱动器电路包含由模式选择信号控制的模式选择电路。 模式选择电路允许控制的并行驱动器关机顺序。 在正常操作期间，模式选择信号被断言，并且显示驱动器电路将显示器的图像数据加载到显示像素中。 当模式选择信号被断言时，显示驱动器电路中的模式选择电路和其他电路在掉电期间继续运行，以便将安全数据加载到显示像素中，以避免当显示器被断电时损坏显示器。

公开(公告)号：US10123005B2

公开(公告)日：2018-11-06

申请号：US15048365

申请日：2016-02-19

Applicant: Apple Inc.

Inventor： Mingxia Gu ,  Andrew P. Aitken ,  Bongsun Lee ,  Gabriel Marcu ,  Ian C. Hendry ,  Jun Qi ,  Victor H. Yin ,  Wei Chen ,  Yanming Li

IPC: H04N9/64 ,  H04N17/04 ,  G09G3/00

Abstract: A display may store extended display identification data for communicating the capabilities of the display to a source device such as a graphics processing unit. The extended display identification data may include a red primary color value, a green primary color value, and a blue primary color value. The primary color values in the extended display identification data may be determined during manufacturing. For example, a light sensor may measure the native primary colors of the display, and calibration computing equipment may determine if the native primary colors of the display are within a target color gamut. If the native primary colors of the display are outside of the target color gamut by an amount larger than a threshold, the primary color values in the extended display identification data may be adjusted to account for the color variation.

公开(公告)号：US09814106B2

公开(公告)日：2017-11-07

申请号：US14502945

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Asif Hussain ,  Andrew P. Aitken ,  Manisha P. Pandya

IPC: G09G3/34 ,  H05B33/08

CPC classification number: H05B33/0815 ,  G09G3/3406 ,  G09G3/342 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/064 ,  Y02B20/346

Abstract: The embodiments discussed herein relate to systems, methods, and apparatus for synchronizing a pulse width modulation (PWM) dimming clock signal with a frame rate signal, line sync signal, and/or a horizontal sync signal of a display device. The PWM dimming clock signal can be generated by a synchronization block having a programmable offset/delay. The programmable offset/delay can control the offset or phase difference between an input and an output clock signal of the synchronization block. Depending on the clock rate of PWM dimming and/or panel resolution, the phase/offset delay can be adjusted to achieve the optimum front of screen performance. Additionally, an input clock generator/missing pulse detection block can output a programmed clock signal to the synchronization block in case of a missing external clock, or insert a pulse when there is a missing pulse detected.

公开(公告)号：US20160261860A1

公开(公告)日：2016-09-08

申请号：US15048365

申请日：2016-02-19

Applicant: Apple Inc.

Inventor： Mingxia Gu ,  Andrew P. Aitken ,  Bongsun Lee ,  Gabriel Marcu ,  Ian C. Hendry ,  Jun Qi ,  Victor H. Yin ,  Wei Chen ,  Yanming Li

IPC: H04N17/04 ,  H04N9/73

CPC classification number: H04N17/04 ,  G09G3/006 ,  G09G2320/029 ,  G09G2320/0666 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2370/042

Abstract: A display may store extended display identification data for communicating the capabilities of the display to a source device such as a graphics processing unit. The extended display identification data may include a red primary color value, a green primary color value, and a blue primary color value. The primary color values in the extended display identification data may be determined during manufacturing. For example, a light sensor may measure the native primary colors of the display, and calibration computing equipment may determine if the native primary colors of the display are within a target color gamut. If the native primary colors of the display are outside of the target color gamut by an amount larger than a threshold, the primary color values in the extended display identification data may be adjusted to account for the color variation.

Abstract translation: 显示器可以存储用于将显示器的能力传送到诸如图形处理单元的源设备的扩展显示标识数据。 扩展显示识别数据可以包括红色原色值，绿色原色值和蓝色原色值。 扩展显示识别数据中的原色值可以在制造期间确定。 例如，光传感器可以测量显示器的本机原色，并且校准计算设备可以确定显示器的本机原色是否在目标色域内。 如果显示器的本机原色在目标色域之外的量大于阈值，则扩展显示识别数据中的原色值可以被调整以考虑颜色变化。