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公开(公告)号：US10199011B2
公开(公告)日：2019-02-05
申请号：US14023420
申请日：2013-09-10
申请人： APPLE INC.
摘要： Systems, methods, and devices are provided for generating a tone mapping function used in adjusting the power consumed by a backlight of an electronic display. One such method includes sampling an image frame in framebuffer space and generating a tone mapping function in linear space. The tone mapping function may have at least two portions: a nondistorting portion that does not to distort pixels to which it applies when an intensity of a backlight of the electronic display is modified and a distorting portion that does distort pixels to which it applies when the intensity of the backlight is modified. Thereafter, the intensity of the backlight may be modified based at least in part on the nondistorting portion of the tone mapping function, the tone mapping function converted to framebuffer space, and the tone mapping function applied to the image frame or a subsequent image frame.
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2.发明授权公开(公告)号：US09236029B2
公开(公告)日：2016-01-12
申请号：US14023412
申请日：2013-09-10
申请人： APPLE INC.
CPC分类号： G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
摘要： Systems, methods, and devices are provided for histogram generation and evaluation used in adjusting the power consumed by a backlight of an electronic display. One such method involves generating a pixel brightness histogram of an image frame passing through a pixel pipeline in a nonlinear space. One or more pixel brightness values from the histogram may be selected before being converted from the nonlinear space into a linear space. A tone mapping function and backlight intensity are determined based at least in part on the one or more pixel brightness values in the linear space. The resulting tone mapping function is converted to the nonlinear space and applied to the image frame or a subsequent image frame in the pixel pipeline. The pixels of the image frame to which the nondistorting portion of the tone mapping function is applied may appear substantially undistorted despite a reduction in backlight intensity.
摘要翻译： 提供了系统，方法和设备用于调整电子显示器的背光消耗的功率的直方图生成和评估。 一种这样的方法涉及生成通过非线性空间中的像素流水线的图像帧的像素亮度直方图。 在从非线性空间转换成线性空间之前，可以选择来自直方图的一个或多个像素亮度值。 至少部分地基于线性空间中的一个或多个像素亮度值来确定色调映射功能和背光强度。 所得到的色调映射函数被转换为非线性空间，并应用于像素管线中的图像帧或后续图像帧。 即使应用了色调映射功能的非失真部分的图像帧的像素也可能基本上不失真，尽管背光强度降低。
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公开(公告)号：US09355588B2
公开(公告)日：2016-05-31
申请号：US14512879
申请日：2014-10-13
申请人： APPLE INC.
CPC分类号： G09G3/2003 , G09G3/20 , G09G3/3413 , G09G2320/0242 , G09G2320/0626 , G09G2320/0666 , G09G2360/144 , H04N13/128 , H05B37/0218 , Y02B20/46
摘要： A method for controlling characteristics of an electronic device based on ambient light levels is provided. In one embodiment, the method includes receiving light at an ambient light sensor of a device and measuring components, such as color components, of the visible light. The component levels may be weighted differently by factors that vary based on the intensity of the light received by the ambient light sensor. Also, the brightness level of a light source in the device or color output of the device may be controlled based on the weighted component levels. Additional methods, systems, and devices relating to control of an electronic device based on sensed ambient light are also disclosed.
摘要翻译： 提供了一种基于环境光水平来控制电子设备的特性的方法。 在一个实施例中，该方法包括在设备的环境光传感器处接收光并测量可见光的诸如颜色分量的组件。 可以基于由环境光传感器接收的光的强度而变化的因素来对组分水平进行不同的加权。 此外，可以基于加权的分量水平来控制设备中的光源的亮度级别或设备的颜色输出。 还公开了与基于感测到的环境光的电子设备的控制有关的附加方法，系统和设备。
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4.发明申请Generation of Tone Mapping Function for Dynamic Pixel and Backlight Control 审中-公开用于动态像素和背光控制的色调映射功能的生成公开(公告)号：US20140078193A1
公开(公告)日：2014-03-20
申请号：US14023420
申请日：2013-09-10
申请人： APPLE INC.
IPC分类号： G09G3/36
CPC分类号： G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
摘要： Systems, methods, and devices are provided for generating a tone mapping function used in adjusting the power consumed by a backlight of an electronic display. One such method includes sampling an image frame in framebuffer space and generating a tone mapping function in linear space. The tone mapping function may have at least two portions: a nondistorting portion that does not to distort pixels to which it applies when an intensity of a backlight of the electronic display is modified and a distorting portion that does distort pixels to which it applies when the intensity of the backlight is modified. Thereafter, the intensity of the backlight may be modified based at least in part on the nondistorting portion of the tone mapping function, the tone mapping function converted to framebuffer space, and the tone mapping function applied to the image frame or a subsequent image frame.
摘要翻译： 提供了系统，方法和装置，用于产生用于调节电子显示器的背光消耗的功率的色调映射功能。 一种这样的方法包括对帧缓冲空间中的图像帧进行采样并在线性空间中产生色调映射函数。 色调映射功能可以具有至少两个部分：当电子显示器的背光的强度被修改时，不会使其应用的像素失真的非失真部分，以及当该 改变背光的强度。 此后，可以至少部分地基于色调映射功能的非安排部分，转换为帧缓冲器空间的色调映射功能和应用于图像帧或后续图像帧的色调映射功能来修改背光的强度。
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5.发明申请公开(公告)号：US20140078166A1
公开(公告)日：2014-03-20
申请号：US14023412
申请日：2013-09-10
申请人： APPLE INC.
IPC分类号： G09G5/10
CPC分类号： G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
摘要： Systems, methods, and devices are provided for histogram generation and evaluation used in adjusting the power consumed by a backlight of an electronic display. One such method involves generating a pixel brightness histogram of an image frame passing through a pixel pipeline in a nonlinear space. One or more pixel brightness values from the histogram may be selected before being converted from the nonlinear space into a linear space. A tone mapping function and backlight intensity are determined based at least in part on the one or more pixel brightness values in the linear space. The resulting tone mapping function is converted to the nonlinear space and applied to the image frame or a subsequent image frame in the pixel pipeline. The pixels of the image frame to which the nondistorting portion of the tone mapping function is applied may appear substantially undistorted despite a reduction in backlight intensity.
摘要翻译： 提供了系统，方法和设备用于调整电子显示器的背光消耗的功率的直方图生成和评估。 一种这样的方法涉及生成通过非线性空间中的像素流水线的图像帧的像素亮度直方图。 在从非线性空间转换成线性空间之前，可以选择来自直方图的一个或多个像素亮度值。 至少部分地基于线性空间中的一个或多个像素亮度值来确定色调映射功能和背光强度。 所得到的色调映射函数被转换为非线性空间，并应用于像素管线中的图像帧或后续图像帧。 即使应用了色调映射功能的非失真部分的图像帧的像素也可能基本上不失真，尽管背光强度降低。
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公开(公告)号：US09552654B2
公开(公告)日：2017-01-24
申请号：US14178178
申请日：2014-02-11
申请人： Apple Inc.
发明人： Ulrich T. Barnhoefer
CPC分类号： G06T11/001 , G09G3/2003 , G09G3/2055 , G09G3/2074 , G09G5/02 , G09G2320/0242 , G09G2340/0414 , G09G2340/0421 , G09G2340/0428 , G09G2360/16 , H04N1/52
摘要： Embodiments include techniques that use color-shifting and luminance for creation and display of spatio-temporal dithered images. In one embodiment, adjacent pixels are color-shifted with respect to each other and the color values of the adjacent pixels are temporally alternated with color values of pixels in the group. In another embodiment, the luminance of group of adjacent pixels is determined and the luminance of the group is made more homogenous, spatially and temporally, by distributing color variations over a larger number of pixels so as to reduce the luminance difference between the pixel with the least luminance and the pixel with the greatest luminance. Individual color components (e.g., red, green, blue) may also be separated and used so that the color-shifts associated with each color component may be simultaneously present in different pixels.
摘要翻译： 实施例包括使用色彩偏移和亮度来创建和显示时空抖动图像的技术。 在一个实施例中，相邻像素相对于彼此进行颜色偏移，并且相邻像素的颜色值在时间上与组中的像素的颜色值交替。 在另一个实施例中，通过在较大数量的像素上分配颜色变化来确定相邻像素组的亮度并使组的亮度更均匀，在空间和时间上，以便减少像素之间的亮度差异 亮度最小，亮度最高的像素。 单独的颜色分量（例如，红色，绿色，蓝色）也可以被分离和使用，使得与每个颜色分量相关联的颜色偏移可以同时存在于不同的像素中。
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公开(公告)号：US09390681B2
公开(公告)日：2016-07-12
申请号：US14023418
申请日：2013-09-10
申请人： APPLE INC.
CPC分类号： G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
摘要： Systems, methods, and devices are provided for temporal filtering of tone mapping slopes used in adjusting the power consumed by a backlight of an electronic display. One such method involves computing a current first target slope of an intermediate tone mapping function based at least in part on characteristics of a current image frame and temporally filtering the current first target slope to obtain a current first transition slope. A current backlight intensity of the display and a current final tone mapping function may be determined based at least in part on the current first transition slope. The current final tone mapping function may be applied to the current image frame or a subsequent image frame.
摘要翻译： 提供了系统，方法和装置，用于对调整电子显示器背光消耗的功率所使用的色调映射斜率进行时间滤波。 一种这样的方法包括至少部分地基于当前图像帧的特性来计算中间色调映射函数的当前第一目标斜率，并且对当前第一目标斜率进行暂时滤波以获得当前的第一转变斜率。 可以至少部分地基于当前的第一转变斜率来确定显示器的当前背光强度和当前最终色调映射功能。 当前的最终色调映射功能可以应用于当前图像帧或后续图像帧。
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公开(公告)号：US20150029168A1
公开(公告)日：2015-01-29
申请号：US14512879
申请日：2014-10-13
申请人： APPLE INC.
CPC分类号： G09G3/2003 , G09G3/20 , G09G3/3413 , G09G2320/0242 , G09G2320/0626 , G09G2320/0666 , G09G2360/144 , H04N13/128 , H05B37/0218 , Y02B20/46
摘要： A method for controlling characteristics of an electronic device based on ambient light levels is provided. In one embodiment, the method includes receiving light at an ambient light sensor of a device and measuring components, such as color components, of the visible light. The component levels may be weighted differently by factors that vary based on the intensity of the light received by the ambient light sensor. Also, the brightness level of a light source in the device or color output of the device may be controlled based on the weighted component levels. Additional methods, systems, and devices relating to control of an electronic device based on sensed ambient light are also disclosed.
摘要翻译： 提供了一种基于环境光水平来控制电子设备的特性的方法。 在一个实施例中，该方法包括在设备的环境光传感器处接收光并测量可见光的诸如颜色分量的组件。 可以基于由环境光传感器接收的光的强度而变化的因素来对组分水平进行不同的加权。 此外，可以基于加权的分量水平来控制设备中的光源的亮度级别或设备的颜色输出。 还公开了与基于感测到的环境光的电子设备的控制有关的附加方法，系统和设备。
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公开(公告)号：US20140160146A1
公开(公告)日：2014-06-12
申请号：US14178178
申请日：2014-02-11
申请人： Apple Inc.
发明人： Ulrich T. Barnhoefer
IPC分类号： G06T11/00
CPC分类号： G06T11/001 , G09G3/2003 , G09G3/2055 , G09G3/2074 , G09G5/02 , G09G2320/0242 , G09G2340/0414 , G09G2340/0421 , G09G2340/0428 , G09G2360/16 , H04N1/52
摘要： Systems and methods are disclosed to enable the creation and the display of spatio-temporal dithered images. Embodiments include techniques that use color-shifting and luminance. In one embodiment, adjacent pixels are color-shifted with respect to each other and the color values of the adjacent pixels are temporally alternated with color values of pixels in the group. In another embodiment, the luminance of group of adjacent pixels is determined and the luminance of the group is made more homogenous spatially and temporally by distributing color variations over a larger number of pixels so as to reduce the luminance difference between the pixel with the least luminance and the pixel with the greatest luminance. Individual color components (e.g., red, green, blue) may also be separated and used so that the color-shifts associated with each color component may be simultaneously present in different pixels.
摘要翻译： 公开了系统和方法，以便能够创建和显示时空抖动图像。 实施例包括使用色彩偏移和亮度的技术。 在一个实施例中，相邻像素相对于彼此进行颜色偏移，并且相邻像素的颜色值在时间上与组中的像素的颜色值交替。 在另一个实施例中，确定相邻像素组的亮度，并且通过在较大数量的像素上分配颜色变化来使空间和时间上的组的亮度更均匀，以便降低具有最小亮度的像素之间的亮度差 和亮度最大的像素。 单独的颜色分量（例如，红色，绿色，蓝色）也可以被分离和使用，使得与每个颜色分量相关联的颜色偏移可以同时存在于不同的像素中。
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公开(公告)号：US20140078192A1
公开(公告)日：2014-03-20
申请号：US14023418
申请日：2013-09-10
申请人： APPLE INC.
IPC分类号： G09G3/34
CPC分类号： G09G5/10 , G09G3/3406 , G09G3/3607 , G09G2320/0271 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
摘要： Systems, methods, and devices are provided for temporal filtering of tone mapping slopes used in adjusting the power consumed by a backlight of an electronic display. One such method involves computing a current first target slope of an intermediate tone mapping function based at least in part on characteristics of a current image frame and temporally filtering the current first target slope to obtain a current first transition slope. A current backlight intensity of the display and a current final tone mapping function may be determined based at least in part on the current first transition slope. The current final tone mapping function may be applied to the current image frame or a subsequent image frame.
摘要翻译： 提供了系统，方法和装置，用于对调整电子显示器背光消耗的功率所使用的色调映射斜率进行时间滤波。 一种这样的方法包括至少部分地基于当前图像帧的特性来计算中间色调映射函数的当前第一目标斜率，并且对当前第一目标斜率进行暂时滤波以获得当前的第一转变斜率。 可以至少部分地基于当前的第一转变斜率来确定显示器的当前背光强度和当前最终色调映射功能。 当前的最终色调映射功能可以应用于当前图像帧或后续图像帧。
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