Subtractive color based display white point calibration
    61.
    发明授权
    Subtractive color based display white point calibration 有权
    减色显示白点校准

    公开(公告)号:US09076376B2

    公开(公告)日:2015-07-07

    申请号:US13861175

    申请日:2013-04-11

    Applicant: APPLE INC.

    Abstract: Systems, methods, and devices for white point calibration using subtractive color measurements are provided. Specifically, a white point of a display may be calibrated using subtractive color measurements rather than merely additive color measurements. In one example, a display having red, green, and blue pixels may measure the responses in a subtractive color space (e.g., CMY) rather than additive color space (e.g., RGB). Measurements of the display response using subtractive color space may involve providing image data to two or more color channels at once. Thus, any crosstalk effect between channels may be accounted for, even though the same crosstalk effect might not be apparent using additive color measurements in which only a single channel color channel were measured.

    Abstract translation: 提供了使用减色测量的白点校准的系统,方法和设备。 具体地,可以使用减色测量而不是仅仅添加颜色测量来校准显示器的白点。 在一个示例中,具有红色,绿色和蓝色像素的显示器可以在减法颜色空间(例如CMY)中而不是加性色彩空间(例如,RGB)测量响应。 使用减法色空间进行显示响应的测量可能涉及将图像数据一次提供给两个或更多个颜色通道。 因此,可以考虑通道之间的任何串扰效应,即使使用其中仅测量单个通道颜色通道的加法颜色测量,相同的串扰效应可能不明显。

    Methods for display uniform gray tracking and gamma calibration
    62.
    发明授权
    Methods for display uniform gray tracking and gamma calibration 有权
    显示均匀灰度跟踪和伽马校准的方法

    公开(公告)号:US09055283B2

    公开(公告)日:2015-06-09

    申请号:US13841540

    申请日:2013-03-15

    Applicant: Apple Inc.

    CPC classification number: H04N17/02 G09G5/02 H04N17/04

    Abstract: A method is provided for calibrating a display having color channels. Each color channel is capable of adjusting settings for pixel values at gray level entries. The method includes selecting a gray level entry for calibration. The method also includes providing a target white point in chromaticity coordinates (x, y) and a target brightness at the selected gray level entry to the display. The method further includes adjusting the setting for the pixel values for the color channels at the selected gray level entry such that the display achieves the target white point and the target brightness at an adjusted pixel value.

    Abstract translation: 提供了一种校准具有彩色通道的显示器的方法。 每个颜色通道能够调整灰度条目下的像素值的设置。 该方法包括选择用于校准的灰度级条目。 该方法还包括将色度坐标(x,y)中的目标白点和在所选择的灰度级条目处的显示器提供目标亮度。 该方法还包括调整所选择的灰度级条目处的颜色通道的像素值的设置,使得显示器以调整的像素值实现目标白点和目标亮度。

    Methods for Display Uniform Gray Tracking and Gamma Calibration
    63.
    发明申请
    Methods for Display Uniform Gray Tracking and Gamma Calibration 有权
    显示均匀灰色跟踪和伽玛校准的方法

    公开(公告)号:US20140267785A1

    公开(公告)日:2014-09-18

    申请号:US13841540

    申请日:2013-03-15

    Applicant: APPLE INC.

    CPC classification number: H04N17/02 G09G5/02 H04N17/04

    Abstract: A method is provided for calibrating a display having color channels. Each color channel is capable of adjusting settings for pixel values at gray level entries. The method includes selecting a gray level entry for calibration. The method also includes providing a target white point in chromaticity coordinates (x, y) and a target brightness at the selected gray level entry to the display. The method further includes adjusting the setting for the pixel values for the color channels at the selected gray level entry such that the display achieves the target white point and the target brightness at an adjusted pixel value.

    Abstract translation: 提供了一种校准具有彩色通道的显示器的方法。 每个颜色通道能够调整灰度条目下的像素值的设置。 该方法包括选择用于校准的灰度级条目。 该方法还包括将色度坐标(x,y)中的目标白点和在所选择的灰度级条目处的显示器提供目标亮度。 该方法还包括调整所选择的灰度级条目处的颜色通道的像素值的设置,使得显示器以调整的像素值实现目标白点和目标亮度。

    SUBTRACTIVE COLOR BASED DISPLAY WHITE POINT CALIBRATION
    64.
    发明申请
    SUBTRACTIVE COLOR BASED DISPLAY WHITE POINT CALIBRATION 有权
    基于色彩的显示白点校准

    公开(公告)号:US20140071177A1

    公开(公告)日:2014-03-13

    申请号:US13861175

    申请日:2013-04-11

    Applicant: APPLE INC.

    Abstract: Systems, methods, and devices for white point calibration using subtractive color measurements are provided. Specifically, a white point of a display may be calibrated using subtractive color measurements rather than merely additive color measurements. In one example, a display having red, green, and blue pixels may measure the responses in a subtractive color space (e.g., CMY) rather than additive color space (e.g., RGB). Measurements of the display response using subtractive color space may involve providing image data to two or more color channels at once. Thus, any crosstalk effect between channels may be accounted for, even though the same crosstalk effect might not be apparent using additive color measurements in which only a single channel color channel were measured.

    Abstract translation: 提供了使用减色测量的白点校准的系统,方法和设备。 具体地,可以使用减色测量而不是仅仅添加颜色测量来校准显示器的白点。 在一个示例中,具有红色,绿色和蓝色像素的显示器可以在减法颜色空间(例如CMY)中而不是加性色彩空间(例如,RGB)测量响应。 使用减法色空间进行显示响应的测量可能涉及将图像数据一次提供给两个或更多个颜色通道。 因此,可以考虑通道之间的任何串扰效应,即使使用其中仅测量单个通道颜色通道的加法颜色测量,相同的串扰效应可能不明显。

    Near-viewing notification techniques

    公开(公告)号:US11681415B2

    公开(公告)日:2023-06-20

    申请号:US16670929

    申请日:2019-10-31

    Applicant: Apple Inc.

    CPC classification number: G06F3/0484 G06F3/011 G06F3/017 G06F9/542

    Abstract: Techniques are provided for implementing near-view notification techniques. In some instances, a viewing distance with respect to a display screen of an electronic device may be determined. In accordance with a determination that the viewing distance is above a distance threshold, content may be presented on the display screen. In accordance with a determination that the viewing distance is under a distance threshold, until the viewing distance returns to being above the distance threshold, a visual notification may be displayed. The visual notification may disrupt the content presented on the display screen.

    Display calibration system
    70.
    发明授权

    公开(公告)号:US11575884B1

    公开(公告)日:2023-02-07

    申请号:US16907027

    申请日:2020-06-19

    Applicant: Apple Inc.

    Abstract: A system may include multiple electronic devices. A first device such as a source electronic device may supply visual content for displaying by a display in a second electronic device such as a display electronic device. The display electronic device may be a television or other device with a display. Calibration operations may be performed by taking light measurements on light produced by the display when test content is provided from the first device to the second device. A third electronic device in the system such as a portable electronic device with an ambient light sensor may make measurement on the light from the display while the test content is being displayed. The test content may contain a test image target with time-varying color and time-varying intensity, allowing calibration information such as gamma curves to be obtained on the display.

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