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    Image control system and method
    21.
    发明授权
    Image control system and method 有权
    图像控制系统及方法

    公开(公告)号：US07777915B2

    公开(公告)日：2010-08-17

    申请号：US11453353

    申请日：2006-06-15

    申请人： Chung-Hui Kuo ,  Eric K. Zeise ,  Di Lai

    发明人： Chung-Hui Kuo ,  Eric K. Zeise ,  Di Lai

    IPC分类号： G06F15/00 ,  H04N1/46 ,  G06K9/00

    CPC分类号： H04N1/6055

    摘要： A color image control system and method are provided for improving the image control of printing systems, including digital front-end processors, color printers and post-finishing system. This automatic image control system, including measurement and calibration, by registering the captured reproduced document with the extracted virtual device document and automatically locating a plurality of regions in which to measure captured color values, using colorimetric measurements of an aim reproduction of the document at these same region positions, and finally relating the captured color values, the colorimetric color values, and the virtual device color values to create the an accurate color mapping. One embodiment of this method combines a global regression polynomial with local mapping refinement.

    摘要翻译： 提供彩色图像控制系统和方法，用于改进打印系统的图像控制，包括数字前端处理器，彩色打印机和后整理系统。 该自动图像控制系统包括测量和校准，通过使用所提取的虚拟设备文档注册所捕获的再现文档，并使用这些文档的目标再现的比色测量来自动定位其中测量所捕获的颜色值的多个区域 相同的区域位置，最后关联捕获的颜色值，色度颜色值和虚拟设备颜色值，以创建准确的颜色映射。 该方法的一个实施例将全局回归多项式与局部映射细化相结合。

    Printer apparatus
    22.
    发明授权
    Printer apparatus 失效
    打印机装置

    公开(公告)号：US4941004A

    公开(公告)日：1990-07-10

    申请号：US320733

    申请日：1989-03-08

    申请人： Hieu T. Pham ,  Yee S. Ng ,  Kenneth D. Kieffer ,  Pin S. Tschang ,  Eric K. Zeise

    发明人： Hieu T. Pham ,  Yee S. Ng ,  Kenneth D. Kieffer ,  Pin S. Tschang ,  Eric K. Zeise

    IPC分类号： G06K15/12

    CPC分类号： G06K15/1247

    摘要： An improved printer apparatus includes a print head having a series of point-like radiation sources, such as LED's, arranged in a row for exposing a recording medium. Logic means is provided for determining which of the point-like radiation sources are to be selected for energization. A current driver means responsive to the logic means provides electrical current to the radiation sources selected. A current driver means include a current mirror having a master circuit for generating a reference current and a plurality of slave circuits for providing respective driver currents to the radiation sources selected for energization. The master circuit includes a resistor of the type that at least prior to adjustment permits for substantially continuous adjustment of driver current over a range of resistance values.Two independent power supplies are provided to the print head. One power supply provides electrical energy for the logic device at a fixed voltage suitable for the logic devices. A second power supply provides the electrical energy for illuminating the point-like radiation sources. Thus, power to the logic devices is isolated from noise generated during energization of the point-like radiation sources. A variable voltage is provided by this second power supply to permit for flexibility in adjustment of the currents to the point-like radiation sources. This variable voltage may be adjusted in response to aging of the LED's or temperature of the print head.

    摘要翻译： 一种改进的打印机装置包括具有排列成行的用于曝光记录介质的一系列点状辐射源（例如LED）的打印头。 提供逻辑装置用于确定哪个点状辐射源将被选择用于通电。 响应于逻辑装置的电流驱动器装置向所选择的辐射源提供电流。 电流驱动器装置包括具有用于产生参考电流的主电路的电流镜和用于向选择用于通电的辐射源提供相应驱动电流的多个从电路。 主电路包括一种电阻器，该电阻器至少在调节之前允许在一个电阻值范围内基本上连续地调节驱动器电流。 两个独立的电源提供给打印头。 一个电源以适合逻辑器件的固定电压为逻辑器件提供电能。 第二电源提供用于照射点状辐射源的电能。 因此，逻辑器件的功率与点状辐射源激励期间产生的噪声隔离。 由该第二电源提供可变电压以允许灵活地调整到点状辐射源的电流。 该可变电压可以响应于LED的老化或打印头的温度而被调整。

    Printer apparatus
    23.
    发明授权
    Printer apparatus 失效
    打印机装置

    公开(公告)号：US4831395A

    公开(公告)日：1989-05-16

    申请号：US199981

    申请日：1988-05-27

    申请人： Hieu T. Pham ,  Yee S. Ng ,  Kenneth D. Kieffer ,  Pin S. Tschang ,  Eric K. Zeise

    发明人： Hieu T. Pham ,  Yee S. Ng ,  Kenneth D. Kieffer ,  Pin S. Tschang ,  Eric K. Zeise

    IPC分类号： G06K15/12

    CPC分类号： G06K15/1247

    摘要： An improved printer apparatus includes a print head having a series of point-like radiation sources, such as LED's, arranged in a row for exposing a recording medium. Logic means is provided for determining which of the point-like radiation sources are to be selected for energization. A current driver means responsive to the logic means provides electrical current to the radiation sources selected. A current driver means include a current mirror having a master circuit for generating a reference current and a plurality of slave circuits for providing respective driver currents to the radiation sources selected for energization. The master circuit includes a resistor of the type that at least prior to adjustment permits for substantially continuous adjustment of driver current over a range of resistance values. Two independent power supplies are provided to the print head. One power supply provides electrical energy for the logic device at a fixed voltage suitable for the logic devices. A second power supply provides the electrical energy for illuminating the point-like radiation sources. Thus, power to the logic devices is isolated from noise generated during energization of the point-like radiation sources. A variable voltage is provided by this second power supply to permit for flexibility in adjustment of the currents to the point-like radiation sources. This variable voltage may be adjusted in response to aging of the LED's or temperature of the print head.

    摘要翻译： 一种改进的打印机装置包括具有排列成行的用于曝光记录介质的一系列点状辐射源（例如LED）的打印头。 提供逻辑装置用于确定哪个点状辐射源将被选择用于通电。 响应于逻辑装置的电流驱动器装置向所选择的辐射源提供电流。 电流驱动器装置包括具有用于产生参考电流的主电路的电流镜和用于向选择用于通电的辐射源提供相应驱动电流的多个从电路。 主电路包括一种电阻器，该电阻器至少在调节之前允许在一个电阻值范围内基本上连续地调节驱动器电流。 两个独立的电源提供给打印头。 一个电源以适合逻辑器件的固定电压为逻辑器件提供电能。 第二电源提供用于照射点状辐射源的电能。 因此，逻辑器件的功率与点状辐射源激励期间产生的噪声隔离。 由该第二电源提供可变电压以允许灵活地调整到点状辐射源的电流。 该可变电压可以响应于LED的老化或打印头的温度而被调整。