Adaptive Calibration for Ambient Light Sensors
    1.
    发明申请
    Adaptive Calibration for Ambient Light Sensors 有权
    环境光传感器的自适应校准

    公开(公告)号:US20160370231A1

    公开(公告)日:2016-12-22

    申请号:US14862026

    申请日:2015-09-22

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with a display mounted in a housing. A color sensing ambient light sensor may measure the color of ambient light. The color sensing ambient light sensor may produce sensor output signals in a device-dependent color space. Control circuitry in the electronic device may convert the sensor output signals from the device-dependent color space to a device-independent color space using a color converting matrix. The color converting matrix may be determined using stored training data. The training data may include color data for different training light sources. The training data may be weighted to selectively control the influence of the training data on the color converting matrix. The training data may be weighted based on a distance between the training color data and a target color in the detected ambient light.

    Abstract translation: 电子设备可以设置有安装在壳体中的显示器。 颜色感测环境光传感器可以测量环境光的颜色。 颜色感测环境光传感器可以在依赖于设备的色彩空间中产生传感器输出信号。 电子设备中的控制电路可以使用颜色转换矩阵将来自设备相关颜色空间的传感器输出信号转换为与设备无关的颜色空间。 可以使用存储的训练数据来确定颜色转换矩阵。 训练数据可以包括用于不同训练光源的颜色数据。 训练数据可以被加权以选择性地控制训练数据对颜色转换矩阵的影响。 可以基于检测到的环境光中的训练颜色数据和目标颜色之间的距离来加权训练数据。

    Light Sensor With Spectral Sensing and Color Matching Function Channels

    公开(公告)号:US20180082659A1

    公开(公告)日:2018-03-22

    申请号:US15643334

    申请日:2017-07-06

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with a display mounted in a housing. An ambient light sensor may measure the color of ambient light through an ambient light sensor window in the display. The ambient light sensor may have an array of light detectors on a semiconductor die. The light detectors may include color matching function light detectors that have spectral sensitivity profiles that match standard observer color matching functions and may include spectral sensing light detectors. The spectral sensing light detectors may have narrower full width at half maximum bandwidths than the color matching function light detectors and may be used with the color matching function light detectors to measure an ambient light spectrum. The color matching function light detectors may be used to measure the color of ambient light.

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