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    • 2. 发明授权
    • Methods and apparatus for implementing transmissive display devices
    • 实现透射式显示装置的方法和装置
    • US06977712B2
    • 2005-12-20
    • US10870235
    • 2004-06-16
    • J. Turner WhittedEric HorvitzMichael J. Sinclair
    • J. Turner WhittedEric HorvitzMichael J. Sinclair
    • F21V8/00G02F1/133G02F1/13357G02F1/1333G02F1/13G02F1/1335
    • G02F1/1336G02F2001/133618G02F2001/133626G02F2201/58G02F2203/09
    • Energy efficient transmissive and transreflective display devices are described. Ambient light from a natural or artificial source is used to replace and/or supplement light normally supplied by a backlight. This is done by directing ambient light to the rear of a transmissive display panel. A window, light tunnel, or a reflective surface located in the rear or top of a display device may be used to direct the ambient light to the back of the display panel. A translucent diffuser and/or diffuse reflector are used to diffuse the ambient light to reduce the chance of bright spots appearing on the display. Additional energy efficiency is achieved by using one or more photo-sensors to detect the amount of light, incident on the front and/or rear of a display panel and by automatically adjusting the backlight intensity as a function of photo-sensor output. In this manner, backlight intensity can be minimized while maintaining the viewability of images shown on the display. In such an embodiment, energy savings are achieved as compared to devices which use fixed backlight intensity settings in a variety of light conditions. Control of the power supplied to a display's backlight in accordance with the present invention can reduce electrical energy consumption and prolong the amount of time a portable device can be used before its batteries need to be recharged.
    • 描述了高能量透射和透反射显示装置。 来自天然或人造源的环境光用于替换和/或补充由背光源正常提供的光。 这通过将环境光引导到透射显示面板的后部来完成。 可以使用位于显示装置的后部或顶部的窗口,光通道或反射表面来将环境光引导到显示面板的背面。 使用半透明漫射和/或漫反射器来漫射环境光以减少出现在显示器上的亮点的机会。 通过使用一个或多个光电传感器来检测入射在显示面板的前面和/或后面的光量并且通过根据光电传感器输出自动调整背光强度来实现额外的能量效率。 以这种方式,可以在保持显示器上显示的图像的可视性的同时最小化背光强度。 在这样的实施例中,与在各种光条件下使用固定背光强度设置的装置相比,实现了节能。 根据本发明的对显示器背光提供的功率的控制可以在其电池需要再充电之前降低电能消耗并延长便携式设备可以使用的时间量。
    • 3. 发明授权
    • Methods and apparatus for implementing transmissive display devices
    • 实现透射式显示装置的方法和装置
    • US06795137B1
    • 2004-09-21
    • US09299521
    • 1999-04-26
    • J. Turner WhittedEric HorvitzMichael J. Sinclair
    • J. Turner WhittedEric HorvitzMichael J. Sinclair
    • G02F11335
    • G02F1/1336G02F2001/133618G02F2001/133626G02F2201/58G02F2203/09
    • Energy efficient transmissive and transreflective display devices are described. Ambient light from a natural or artificial source is used to replace and/or supplement light normally supplied by a backlight. This is done by directing ambient light to the rear of a transmissive display panel. A window, light tunnel, or a reflective surface located in the rear or top of a display device may be used to direct the ambient light to the back of the display panel. A translucent diffuser and/or diffuse reflector are used to diffuse the ambient light to reduce the chance of bright spots appearing on the display. Additional energy efficiency is achieved by using one or more photo-sensors to detect the amount of light, incident on the front and/or rear of a display panel and by automatically adjusting the backlight intensity as a function of photo-sensor output. In this manner, backlight intensity can be minimized while maintaining the viewability of images shown on the display. In such an embodiment, energy savings are achieved as compared to devices which use fixed backlight intensity settings in a variety of light conditions. Control of the power supplied to a display's backlight in accordance with the present invention can reduce electrical energy consumption and prolong the amount of time a portable device can be used before its batteries need to be recharged.
    • 描述了高能量透射和透反射显示装置。 来自天然或人造源的环境光用于替换和/或补充由背光源正常提供的光。 这通过将环境光引导到透射显示面板的后部来完成。 可以使用位于显示装置的后部或顶部的窗口,光通道或反射表面来将环境光引导到显示面板的背面。 使用半透明漫射和/或漫反射器来漫射环境光以减少出现在显示器上的亮点的机会。 通过使用一个或多个光电传感器来检测入射在显示面板的前面和/或后面的光量并且通过根据光电传感器输出自动调整背光强度来实现额外的能量效率。 以这种方式,可以在保持显示器上显示的图像的可视性的同时最小化背光强度。 在这样的实施例中,与在各种光条件下使用固定背光强度设置的装置相比,实现了节能。 根据本发明的对显示器背光提供的功率的控制可以在其电池需要再充电之前降低电能消耗并延长便携式设备可以使用的时间量。
    • 4. 发明授权
    • Methods and apparatus for performing image rendering and rasterization operations
    • 用于执行图像渲染和光栅化操作的方法和装置
    • US06307566B1
    • 2001-10-23
    • US09168014
    • 1998-10-07
    • William HillMichael DugganLeroy B. Keely, Jr.Gregory C. HitchcockJ. Turner Whitted
    • William HillMichael DugganLeroy B. Keely, Jr.Gregory C. HitchcockJ. Turner Whitted
    • G09G536
    • G06T3/4015G06T11/001G09G5/391G09G2340/0457
    • Methods and apparatus for utilizing pixel sub-components which form a pixel element of an LCD display, e.g., as separate luminous intensity elements, are described. Each pixel of a color LCD display is comprised of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The invention takes advantage of the ability to control individual RGB pixel sub-elements to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped, e.g., the RGB pixel sub-elements are arranged lengthwise. In order to utilize the effective resolution which can be obtained by treating RGB pixel sub-components separately, scaling or super sampling of digital representations of fonts is performed in one dimension at a rate that is greater than the scaling or sampling performed in the other dimension. In some embodiments where weighting is used in determining RGB pixel values, e.g., during scan conversion, the super sampling is a function of the weighting. During a scan conversion operation, RGB pixel sub-component values are independently determined from different portions of a scaled image. The scan conversion process may involve use of different weights for each color component. Processing to compensate for color distortions, e.g., color fringing, introduced by treating each pixel sub-component as an independent element is described. For horizontally flowing text applications, screens with vertical as opposed to horizontal striping are preferred.
    • 描述了利用形成LCD显示器的像素元件的像素子部件的方法和装置,例如作为单独的发光强度元件。 彩色LCD显示器的每个像素由三个不重叠的红色,绿色和蓝色矩形像素子元件或子组件组成。 本发明利用了控制各个RGB像素子元素的能力,以有效地增加垂直于屏幕划分的尺寸的尺寸的屏幕分辨率,例如,RGB像素子元素被纵向排列。 为了利用通过分别处理RGB像素子组件可以获得的有效分辨率,在一个维度上以比在另一维度中执行的缩放或采样的速率执行字体的数字表示的缩放或超采样 。 在一些实施例中,其中例如在扫描转换期间使用加权来确定RGB像素值,超采样是加权的函数。 在扫描转换操作期间,RGB像素子分量值是从缩放图像的不同部分独立地确定的。 扫描转换过程可以涉及对于每个颜色分量使用不同的权重。 描述了通过将每个像素子部件作为独立元件进行处理而引入的用于补偿颜色失真(例如,彩色条纹)的处理。 对于水平流动的文本应用,优选与垂直条纹相反的屏幕。
    • 5. 发明授权
    • Method and apparatus for detecting and reducing color artifacts in images
    • 用于检测和减少图像中的色彩伪像的方法和装置
    • US06243070B1
    • 2001-06-05
    • US09191173
    • 1998-11-13
    • William HillMichael DugganLeroy B. Keely, Jr.Gregory C. HitchcockJ. Turner Whitted
    • William HillMichael DugganLeroy B. Keely, Jr.Gregory C. HitchcockJ. Turner Whitted
    • G09G536
    • G09G5/28G02F1/133514G02F1/133516G06T3/4015G09G3/2011G09G3/2074G09G3/3607G09G5/02G09G5/20G09G5/24G09G2300/02G09G2300/0439G09G2300/0452G09G2310/0235G09G2320/0276G09G2340/0407G09G2340/0457
    • Color processing operations can be used to reduce color artifacts in images displayed on display devices having pixels with separately controllable pixel sub-components. Different regions of image data are mapped to the individual pixel sub-components of the pixels. In the absence of performing the color processing operations, distracting color artifacts can be generated in the displayed image as a result of the pixel sub-components being treated as independent luminous intensity sources. Color artifacts can be reduced by comparing the difference between the luminous intensity values of adjacent red and green pixel sub-components with a threshold value and adjusting the luminous intensity values so as to reduce the difference if it exceeds the threshold value. Color artifacts can also be reduced by performing a gray scaling operation on pixels having an overall luminance that is less than the luminance associated with a foreground color and also less than the luminance associated with a background color. Color artifacts can also be reduced by adjusting the luminous intensity values if a pixel has a color that falls outside a selected range of acceptable mixes of the foreground and background colors.
    • 颜色处理操作可以用于减少显示在具有具有可分离的可控像素子组件的像素的显示设备上的图像中的色彩瑕疵。 图像数据的不同区域被映射到像素的各个像素子分量。 在没有执行颜色处理操作的情况下,作为像素子部件被视为独立的发光强度源的结果,可以在所显示的图像中产生分散的颜色伪像。 通过将相邻的红色和绿色像素子分量的发光强度值之间的差与阈值进行比较并调整发光强度值,以便如果它们超过阈值则减小差异,则可以减少颜色伪像。 还可以通过对总亮度小于与前景颜色相关联的亮度并且小于与背景颜色相关联的亮度的像素执行灰度缩放操作来减少彩色伪像。 如果像素具有落在前景和背景颜色的可接受的混合物的选定范围之外的颜色,则还可以通过调整发光强度值来减少颜色伪影。
    • 6. 发明授权
    • Method and apparatus for displaying images such as text
    • 用于显示文本等图像的方法和装置
    • US06188385B1
    • 2001-02-13
    • US09168012
    • 1998-10-07
    • William HillMichael DugganLeroy B. Keely, Jr.Gregory C. HitchcockJ. Turner Whitted
    • William HillMichael DugganLeroy B. Keely, Jr.Gregory C. HitchcockJ. Turner Whitted
    • G09G536
    • G09G5/28G09G3/20G09G3/2003G09G5/24G09G2300/0443G09G2300/0452G09G2340/0407G09G2340/0414G09G2340/0421G09G2340/0457
    • Methods and apparatus for utilizing pixel sub-components which form a pixel element of an LCD display, e.g., as separate luminous intensity elements, are described. Each pixel of a color LCD display is comprised of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The invention takes advantage of the ability to control individual RGB pixel sub-elements to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped, e.g., the RGB pixel sub-elements are arranged lengthwise. In order to utilize the effective resolution which can be obtained by treating RGB pixel sub-components separately, scaling or super sampling of digital representations of fonts is performed in one dimension at a rate that is greater than the scaling or sampling performed in the other dimension. In some embodiments where weighting is used in determining RGB pixel values, e.g., during scan conversion, the super sampling is a function of the weighting. During a scan conversion operation, RGB pixel sub-component values are independently determined from different portions of a scaled image. The scan conversion process may involve use of different weights for each color component. Processing to compensate for color distortions, e.g., color fringing, introduced by treating each pixel sub-component as an independent element is described. For horizontally flowing text applications, screens with vertical as opposed to horizontal striping are preferred.
    • 描述了利用形成LCD显示器的像素元件的像素子部件的方法和装置,例如作为单独的发光强度元件。 彩色LCD显示器的每个像素由三个不重叠的红色,绿色和蓝色矩形像素子元件或子组件组成。 本发明利用了控制各个RGB像素子元素的能力,以有效地增加垂直于屏幕划分的尺寸的尺寸的屏幕分辨率,例如,RGB像素子元素被纵向排列。 为了利用通过分别处理RGB像素子组件可以获得的有效分辨率,在一个维度上以比在另一维度中执行的缩放或采样的速率执行字体的数字表示的缩放或超采样 。 在一些实施例中,其中例如在扫描转换期间使用加权来确定RGB像素值,超采样是加权的函数。 在扫描转换操作期间,RGB像素子分量值是从缩放图像的不同部分独立地确定的。 扫描转换过程可以涉及对于每个颜色分量使用不同的权重。 描述了通过将每个像素子部件作为独立元件进行处理而引入的用于补偿颜色失真(例如,彩色条纹)的处理。 对于水平流动的文本应用,优选与垂直条纹相反的屏幕。