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公开(公告)号：US4739374A
公开(公告)日：1988-04-19
申请号：US19982
申请日：1987-02-27
CPC分类号： H04N1/502
摘要： A color image copying system (10) includes a light modulator (12) that receives incident light rays emanating from a source (14) of light. The light modulator comprises a light dispersing apparatus (54) that disperses different wavelengths of the incident light rays to different locations on a focal surface (60). A filter mask (68) aligned with the focal surface transmits preselected wavelengths of the ultraviolet light and blocks light of all other wavelengths. Each of a set of light valves (86, 88, 90) receives a different wavelength of light transmitted by the filter mask and intensity modulates it in accordance with image pixel information provided by an information source (16). An optical focusing apparatus (56) focuses the intensity-modulated wavelengths of light to a relatively small location (20) on an image focal surface (22) which is aligned with a light-sensitive medium (24). The light focused at the location exposes the light-sensitive medium to each of the wavelengths of light for a particular period of time determined by the image pixel information. The location to which the intensity-modulated light is focused is sequentially aligned with adjacent regions of the light-sensitive medium in synchronism with the delivery of image pixel information corresponding to the adjacent regions. This process continues in pixel-by-pixel fashion across the surface of the light-sensitive medium to form a color image copy in a single exposure pass over such surface.
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2.发明授权Method of matching hardcopy colors to video display colors in which unreachable video display colors are converted into reachable hardcopy colors in a mixture-single-white (MSW) color space 失效将硬拷贝颜色与视频显示颜色匹配的方法，其中无法访问的视频显示颜色在混合单白（MSW）色彩空间中转换为可达到的硬拷贝颜色
公开(公告)号：US4670780A
公开(公告)日：1987-06-02
申请号：US737765
申请日：1985-05-28
CPC分类号： H04N1/6058
摘要： A method for matching hardcopy colors to display colors for registered-dot ink-jet copiers. Video RGB (red-green-blue) is converted into chromaticity coordinates in XYZ color space. An explicit solution is achieved by defining a new MSW color space which restricts the hardcopy colors to some percentage of one of the binary mixtures (M) of inks, some percentage of one of the single (S) inks, and some percentage of paper white (W). The color data in XYZ space is converted to MSW space and unreachable display colors are mapped into reachable hardcopy colors. Correction for hardcopy non-linearities is accomplished by using coverage ratios to correct for color shifts due to interaction among the inks. The MSW values are then converted to CMY (cyan-magenta-yellow) values which are processed in accordance with an appropriate dithering algorithm for conversion into dots for printing on paper.
摘要翻译： 用于匹配硬拷贝颜色以显示注册点喷墨复印机的颜色的方法。 视频RGB（红 - 绿 - 蓝）在XYZ色空间转换为色度坐标。 通过定义新的MSW颜色空间来实现明确的解决方案，该空间将硬拷贝颜色限制为油墨的二进制混合物（M）中的一种的一部分，单一（S）墨水中的一种百分比和一些百分比的纸白 （W）。 XYZ空间中的颜色数据转换为MSW空间，不可达到的显示颜色映射到可达到的硬拷贝颜色。 用于硬拷贝非线性的校正是通过使用覆盖率来校正由于油墨之间的相互作用引起的颜色偏移来实现的。 然后将MSW值转换为CMY（青色 - 品红色 - 黄色）值，这些值根据适当的抖动算法进行处理，以转换成用于在纸张上打印的点。
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公开(公告)号：US4985853A
公开(公告)日：1991-01-15
申请号：US325428
申请日：1989-03-20
摘要： A method and apparatus for reversibly transforming color, which is selected from a gamut of colors producible by the primaries of a color display device (20), into a perceptually uniform color space. The coordinates of the color space are readily convertible into internationally accepted standards for color measurement. Also provided, is a method for transforming the color space coordinates of a selected color into the corresponding relative primary intensity levels of the display device (20).
摘要翻译： 从彩色显示装置（20）的原色产生的颜色的色域中选择可逆地变换颜色的方法和装置，成为感知统一的色彩空间。 颜色空间的坐标可以很容易地转换成国际公认的颜色测量标准。 还提供了一种用于将所选颜色的颜色空间坐标变换为显示装置（20）的对应相对初级强度级别的方法。
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4.发明授权Method and apparatus for processing colorimetric parameters of a color sample 失效用于处理颜色样本的比色参数的方法和装置
公开(公告)号：US4875032A
公开(公告)日：1989-10-17
申请号：US113022
申请日：1987-10-26
申请人： Paul A. McManus , Robert J. Beaton
发明人： Paul A. McManus , Robert J. Beaton
摘要： The colorimetric parameters of a color sample (42) that is illuminated by a reference light are processed for reproduction by a video monitor (20) or the like. A color filter assembly (40) and associated sensor (28) are used to generate signals indicative of the colorimetric parameters of the illuminated color sample (42). A computer (24) transforms the signals into a form suitable for driving a video monitor (20) to reproduce the color sample (42) on the monitor screen.
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公开(公告)号：US4843573A
公开(公告)日：1989-06-27
申请号：US113029
申请日：1987-10-26
CPC分类号： G09G5/02 , H04N9/64 , G09G2320/0693
摘要： A method and apparatus for reversibly transforming color, which is selected from a gamut of colors producible by the primaries of a color display device (20), into a perceptually uniform color space. The coordinates of the color space are readily convertible into internationally accepted standards for color measurement. Also provided, is a method for transforming the color space coordinates of a selected color into the corresponding relative primary intensity levels of the display device (20).
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公开(公告)号：US5479186A
公开(公告)日：1995-12-26
申请号：US653741
申请日：1991-02-11
申请人： Paul A. McManus , Robert J. Beaton
发明人： Paul A. McManus , Robert J. Beaton
摘要： A video monitor color control system including means for calibrating the intensity response of CRT phosphor sets to each of a plurality of electron gun control levels. Provided is a processor (24) that generates a sequence of discrete DAC signals, each DAC signal identifying an electron gun and a DAC value for driving the electron gun at a selected control level. Also provided is a monitor driver (22) connected to the processor (24) and to the monitor (20) and controllable in response to a DAC signal for driving the electron gun identified by the DAC signal at the control level identified by the DAC signal. The driven electron gun excites the associated phosphor set. A sensor (28) is provided for detecting the luminous intensity level of the phosphor excited by the electron gun, and for converting the detected intensity into a representative signal. The processor (24) receives for each discrete DAC signal the representative signals produced by the sensor and generates a look-up table for each gun defining intensity levels for each of the plurality of electron gun control levels.
摘要翻译： 一种视频监视器颜色控制系统，包括用于将CRT荧光体组的强度响应校准到多个电子枪控制级别中的每一个的装置。 提供了一种处理器（24），其产生一系列离散DAC信号，每个DAC信号识别电子枪和用于在所选择的控制级别驱动电子枪的DAC值。 还提供了连接到处理器（24）和监视器（20）的监视器驱动器（22），并且响应于DAC信号可控制，DAC信号用于驱动由DAC信号识别的电子枪，该电子枪由DAC信号识别 。 驱动的电子枪激发相关的荧光粉组。 提供了一种传感器（28），用于检测由电子枪激发的荧光体的发光强度水平，并将检测到的强度转换成代表信号。 处理器（24）为每个分立的DAC信号接收由传感器产生的代表性信号，并为每个喷枪产生一个查找表，以确定多个电子枪控制电平中的每一个的强度水平。
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