Printer color correction
    1.
    发明申请
    Printer color correction 有权
    打印机颜色校正

    公开(公告)号:US20050093923A1

    公开(公告)日:2005-05-05

    申请号:US10818883

    申请日:2004-04-06

    IPC分类号: H04N1/60 B41J1/00

    CPC分类号: H04N1/6033

    摘要: Techniques are disclosed for performing color correction in a color printer. An RGB test image is printed to produce a printed calibration image. Colors in the printed calibration image are measured and compared to expected color values. A color corrector generates a printer lookup table (LUT) based on this comparison. The LUT may be generated based on models of the printer's print engine and previous LUTs. The color corrections are applied to subsequent print jobs to improve the quality of color output. Color measurement and correction may be performed using a closed-loop system contained within the printer that includes a color measurement device (such as a scanner) and a computer.

    摘要翻译: 公开了用于在彩色打印机中执行颜色校正的技术。 打印RGB测试图像以产生打印的校准图像。 测量印刷校准图像中的颜色并将其与预期颜色值进行比较。 颜色校正器基于该比较生成打印机查找表(LUT)。 LUT可以基于打印机的打印引擎和先前的LUT的模型生成。 颜色校正应用于后续打印作业,以提高颜色输出的质量。 可以使用包含在包括彩色测量装置(例如扫描仪)和计算机的打印机内的闭环系统来执行颜色测量和校正。

    Print medium feature encoding and decoding
    4.
    发明申请
    Print medium feature encoding and decoding 有权
    打印介质功能编码和解码

    公开(公告)号:US20060261168A1

    公开(公告)日:2006-11-23

    申请号:US11133920

    申请日:2005-05-20

    IPC分类号: G06K19/06

    CPC分类号: G06K19/06009 G06K1/121

    摘要: Techniques are disclosed for encoding and decoding codes, such as bar codes, containing a plurality of features, such as bars and spaces of varying widths. In one aspect of the present invention, techniques are provided for encoding information in an arbitrary-length code using a single symbol. Techniques for encoding and decoding information using codes having features with more than two distinct values are also provided.

    摘要翻译: 公开了用于编码和解码诸如条形码的代码的技术,其包含多个特征,例如具有不同宽度的条和空格。 在本发明的一个方面,提供了使用单个符号对任意长度的代码中的信息进行编码的技术。 还提供了使用具有多于两个不同值的特征的代码对信息进行编码和解码的技术。