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1. 发明授权

US5978008A Automatic color correction for a white-light printer 失效
标题翻译：白光打印机的自动色彩校正
公开(公告)号：US5978008A
公开(公告)日：1999-11-02
申请号：US562202
申请日：1995-11-22
申请人： Timothy R. Crawford , Joseph V. Demarinis
发明人： Timothy R. Crawford , Joseph V. Demarinis
IPC分类号： G06K15/12 , H04N1/40 , H04N1/50 , B41J2/435
CPC分类号： H04N1/4005 , G06K15/1233 , H04N1/508
摘要： A method and apparatus for compensating for color and brightness variations in a white-light printer is described where the white-light printer automatically adjusts exposure of a photosensitive medium to optimize a printed image thereon. The white-light printer generates compensation factors used by the white-light printer to individually correct for primary colors within an image by monitoring chromatic transmission through the same or equivalent color filters as are being used to expose the photosensitive medium. A method is disclosed where the video output is set at maximum and brightness, or Luma, is varied and measured in foot-Lamberts. The Luma that gives "white", a film table is recorded, and that Luma is fixed such that proper white, black, and grays are attained. A similar procedure is repeated for each primary color, thereby compensating for color and brightness variations due to differing CRTs and the warm-up state of each CRT.
摘要翻译：描述了用于补偿白光打印机中的颜色和亮度变化的方法和装置，其中白光打印机自动调节感光介质的曝光以优化其上的打印图像。白光打印机产生由白光打印机使用的补偿因子，以单独地校正图像中的原色，通过与用于曝光光敏介质的相同或等效的滤色器进行监测的色彩透射。公开了一种方法，其中视频输出被设置为最大值，亮度或亮度在foot-Lamberts中变化和测量。记录了“白”的亮度，记录了电影表，并且修复了亮度，使得获得了适当的白色，黑色和灰色。对于每种原色重复类似的过程，从而补偿由于不同的CRT和每个CRT的预热状态引起的颜色和亮度变化。

2. 发明授权

US06232904B1 Scanning system for film recorder 失效
标题翻译：电影录像机扫描系统
公开(公告)号：US06232904B1
公开(公告)日：2001-05-15
申请号：US09471782
申请日：1999-12-23
申请人： Robert F. Hartmann , Patrick J. Hegarty , Timothy R. Crawford , Thomas H Campbell
发明人： Robert F. Hartmann , Patrick J. Hegarty , Timothy R. Crawford , Thomas H Campbell
IPC分类号： H03H168
CPC分类号： H04N3/2335 , H03K4/026 , H04N3/16 , H04N5/257 , H04N5/843
摘要： A scanning system for a film recorder utilizes multiple digital-to-analog converters (DACs) to produce a linear output for a vertical deflection circuit which drives a vertical yoke circuit for controlling a CRT beam in a film recorder. The system contains a coarse DAC, a fine DAC, and a delta DAC which provides a signal representing the analog change from line to line. A summing circuit, a difference amplifier, a A/D converter, and a calibration sequence controlled by a DSP create a table to effectively increase the resolution and linearity of the deflection output signal.
摘要翻译：用于胶片记录器的扫描系统利用多个数模转换器（DAC）来产生垂直偏转电路的线性输出，该垂直偏转电路驱动用于控制胶片记录器中的CRT光束的垂直磁轭电路。该系统包含一个粗略的DAC，一个精细的DAC和一个增量DAC，它提供一个表示一行到另一个模拟变化的信号。由DSP控制的求和电路，差分放大器，A / D转换器和校准序列产生一个表，以有效提高偏转输出信号的分辨率和线性度。

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