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1. 发明授权

US07551323B2 Systems and methods for error diffusion 有权
标题翻译：错误扩散的系统和方法
公开(公告)号：US07551323B2
公开(公告)日：2009-06-23
申请号：US10414854
申请日：2003-04-16
申请人： James Ray Bailey , Curt Paul Breswick , David Allen Crutchfield , Ronald Edward Garnett , Bob Thai Pham , James Alan Ward
发明人： James Ray Bailey , Curt Paul Breswick , David Allen Crutchfield , Ronald Edward Garnett , Bob Thai Pham , James Alan Ward
IPC分类号： H04N1/56 , H04N1/60
CPC分类号： H04N1/52 , H04N1/4052
摘要： Error diffusion is performed upon input image data. In one aspect, multiple error diffusion processing elements perform error diffusion on a selected pixel in parallel. In another aspect, the error diffusion logic is integrally formed with a fast local memory in the same electronic device, such as an ASIC. The error data produced by the error diffusion logic for a pixel is buffered in the fast local memory until it is to be used by the error diffusion logic on other pixels. In still another aspect, a first-in-first-out (FIFO) buffer regulates or buffers the color image data between the output of a color conversion system, such as a colorant lookup table, and the input an error diffusion processing element. In yet another aspect, the error diffusion logic has tagging logic that produces and stores an indicator, either in the output data stream itself or in a separate area, to indicate whether a raster contains printable data.
摘要翻译：对输入图像数据执行误差扩散。在一个方面，多个误差扩散处理元件并行地对所选择的像素执行误差扩散。在另一方面，误差扩散逻辑与同一电子设备（例如ASIC）中的快速本地存储器整体形成。由像素的误差扩散逻辑产生的误差数据被缓冲在快速本地存储器中，直到其被其它像素上的误差扩散逻辑使用。在另一方面，先入先出（FIFO）缓冲器在诸如着色查找表的颜色转换系统的输出和输入误差扩散处理元件之间调节或缓冲彩色图像数据。在另一方面，误差扩散逻辑具有标记逻辑，该标签逻辑在输出数据流本身中或在单独的区域中产生和存储指示符，以指示光栅是否包含可打印数据。

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