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51. 发明授权

US5655061A System and method for providing a high addressable printing system 失效
标题翻译：提供高可寻址打印系统的系统和方法
公开(公告)号：US5655061A
公开(公告)日：1997-08-05
申请号：US558100
申请日：1995-11-15
申请人： Francis K. Tse , Michael L. Davidson , Brian C. Hawkins
发明人： Francis K. Tse , Michael L. Davidson , Brian C. Hawkins
IPC分类号： B41J2/52 , G06K15/02 , G06T3/40 , H04N1/387 , H04N1/40 , H04N1/405 , G06F15/00 , G06K9/42 , H04N1/41
CPC分类号： H04N1/40068 , G06K15/02 , H04N1/4056 , G06K2215/0071
摘要： A system and process prints a high resolution image on a high addressable image output terminal by converting an image at one resolution to an image having a lower resolution in a fast-scan direction and a higher resolution in a pixel depth direction. The converted image is then processed and binarized prior to being printed on a high addressable printer. The system or process utilizes a conversion circuit which includes a two-bit per pixel packing circuit, a scanline buffer circuit, a logic circuit, and a look-up table. The conversion circuit initially converts the image into an image having a lower resolution in the fast-scan direction and a higher pixel depth resolution. Thereafter, the image is further converted to an image having a lower resolution in the slow-scan direction and a higher pixel depth resolution. This conversion of a high resolution image to a lower resolution is carried without any substantial lost to the image content data.
摘要翻译：系统和处理通过将一个分辨率的图像转换成具有在快速扫描方向上的较低分辨率的图像和像素深度方向上的较高分辨率的图像，在高可寻址图像输出端子上打印高分辨率图像。然后将转换的图像在打印在高可寻址打印机之前进行处理和二值化。该系统或处理使用包括两位每像素打包电路，扫描线缓冲电路，逻辑电路和查找表的转换电路。转换电路首先将图像转换成具有在快扫描方向上的较低分辨率的图像和更高的像素深度分辨率。此后，图像被进一步转换成具有较慢分辨率的慢扫描方向的图像和更高的像素深度分辨率。承载高分辨率图像到较低分辨率的转换，而不会对图像内容数据造成任何实质的损失。

52. 发明授权

US5477345A Apparatus for subsampling chrominance 失效
标题翻译：用于子采样色度的设备
公开(公告)号：US5477345A
公开(公告)日：1995-12-19
申请号：US167314
申请日：1993-12-15
申请人： Francis K. Tse
发明人： Francis K. Tse
IPC分类号： H04N1/48 , H04N1/46 , H04N1/04
CPC分类号： H04N1/486
摘要： The present invention relates to subsampling processors and a three color sensor array that may be employed to supply subsampled chrominance data to a printing machine, a computer memory device or other device. In one embodiment of the present invention, a three color array of the present invention scans features of an object using an array of one or more subsampling sensor sets spanning a fast scan direction width of n times m (preferrably 2) pixels, with each set having aligned in a slow scan direction column m pixel-sized green sensors aligned in a fast scan direction line for determining pixel-by-pixel green color and luminance, a red sensor extending m pixels wide in said fast scan direction and m pixels long in said slow scan direction for detecting red color and a blue sensor extending m pixels wide in said fast scan direction and m pixels long in said slow scan direction for detecting blue color. Depending on the sensor array employed, the processor employs subsampling techniques and/or subsampled chrominance data to transform the outputs into X, Y and Z tristimulus values and thereafter to L*, a* and b* values corresponding to features of the object scanned.
摘要翻译：本发明涉及二次采样处理器和三色传感器阵列，其可用于将二次采样的色度数据提供给打印机，计算机存储设备或其它设备。在本发明的一个实施例中，本发明的三色阵列使用一个或多个子采样传感器组的阵列来扫描物体的特征，该阵列跨越n倍于m（优选2个）像素的快速扫描方向宽度，每组在慢扫描方向列上排列m个以快速扫描方向线对准的像素尺寸的绿色传感器，用于确定逐个像素的绿色和亮度;红色传感器，其在所述快速扫描方向上延伸m个像素宽，并且将m个像素长所述用于检测红色的慢扫描方向和在所述快速扫描方向上延伸m个像素宽的蓝色传感器，并且在所述慢扫描方向上延伸m个像素，用于检测蓝色。根据采用的传感器阵列，处理器采用二次采样技术和/或二次采样色度数据将输出转换成X，Y和Z三刺激值，然后转换为对应于扫描对象的特征的L *，a *和b *值。

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