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    Method and apparatus for displaying a screen separator line
    1.
    发明授权
    Method and apparatus for displaying a screen separator line 失效
    用于显示屏幕分离线的方法和装置

    公开(公告)号：US5266933A

    公开(公告)日：1993-11-30

    申请号：US58805

    申请日：1993-05-04

    申请人： David C. Frank ,  Shigeru Matsubara ,  Hiroshi Satoh ,  Stephen P. Thompson

    发明人： David C. Frank ,  Shigeru Matsubara ,  Hiroshi Satoh ,  Stephen P. Thompson

    IPC分类号： G09G1/00 ,  G09G1/14

    CPC分类号： G09G1/007

    摘要： Method and apparatus for displaying a horizontal screen separator line between two screen areas. A first step operates a display screen controller (12) in a split screen mode of operation so as to display a first screen area (3) at an upper portion of a display screen (18) and a second screen area (4) at a lower portion of the display screen. The step of operating further includes a step of reading data from a screen memory (42) and displaying rows of corresponding alphanumeric characters. Each character is displayed as a plurality of image pixels arranged along a first number of horizontal scan lines. A further step displays a horizontal visual separator (2) between a last row of the first screen area and a first row of the second screen area. The step of displaying the horizontal visual separator includes the steps of (a) reading data from the screen memory and beginning a display of a row of corresponding visual separator characters; and (b) terminating the display of the row of corresponding visual separator characters after displaying a second number of horizontal scan lines that is less than the first number of horizontal scan lines.

    摘要翻译： 用于在两个屏幕区域之间显示水平屏幕分离线的方法和装置。 第一步骤以分屏操作模式操作显示屏幕控制器（12），以便在显示屏幕（18）的上部和第二屏幕区域（4）处显示第一屏幕区域（3） 显示屏的下部。 操作步骤还包括从屏幕存储器（42）读取数据并显示相应字母数字字符的行的步骤。 每个字符被显示为沿着第一数量的水平扫描线布置的多个图像像素。 另一步骤在第一屏幕区域的最后一行和第二屏幕区域的第一行之间显示水平视觉分离器（2）。 显示水平视觉分离器的步骤包括以下步骤：（a）从屏幕存储器读取数据并开始显示一行相应的视觉分离符字符; 以及（b）在显示小于第一数量的水平扫描线的第二数量的水平扫描线之后终止相应的可视分离符字符行的显示。

    Image processing system for area filling of graphics
    2.
    发明授权
    Image processing system for area filling of graphics 失效
    图像区域填充图像处理系统

    公开(公告)号：US4763119A

    公开(公告)日：1988-08-09

    申请号：US853802

    申请日：1986-04-18

    申请人： Shigeru Matsubara ,  Tohru Mori ,  Toshiroh Tabata

    发明人： Shigeru Matsubara ,  Tohru Mori ,  Toshiroh Tabata

    IPC分类号： G06F3/153 ,  G06T11/40 ,  G09G1/14

    CPC分类号： G06T11/40

    摘要： An area fill technique for graphic images is disclosed wherein the contour lines constituting an image are given in a series of line segments or a series of vectors, and horizontal line segments are ignored. Each line segment other than the horizontal ones is specified by the coordinate addresses for the start and end points in one direction, that is, from top to bottom or from bottom to top. Each is then converted into approximate pixels in the X-Y coordinate system, and stored in a random access work memory. The pixels of each line segment are stored in the work memory according to a rule whereby each line segment is represented by one pixel per horizontal line, and is written by taking exclusive OR of its pixels, excluding the start point, with read pixel data at corresponding coordinate addresses in the work memory. Thus, an even number of contour line pixels exist in each horizontal line in the work memory, and, area fill can be realized by scanning each horizontal line in the work memory and turning on pixel memory cells from an odd numbered contour line pixel to an even numbered contour line pixel. This technique makes it possible to easily perform area fill even for complicated images.

    摘要翻译： 公开了一种用于图形图像的区域填充技术，其中构成图像的轮廓线以一系列线段或一系列向量给出，并且忽略水平线段。 除水平线之外的每个线段由一个方向的起点和终点的坐标地址，即从上到下或从下到上指定。 然后将每个图像转换成X-Y坐标系中的近似像素，并存储在随机存取工作存储器中。 每个线段的像素根据规则被存储在工作存储器中，每个线段由每个水平线上的一个像素表示，并且通过将除了开始点之外的其像素的异或与其中的像素数据进行写入来写入 相应的坐标地址在工作存储器中。 因此，在工作存储器中的每条水平线上都存在偶数轮廓线像素，并且可以通过扫描工作存储器中的每条水平线并将像素存储单元从奇数轮廓线像素接通到 偶数轮廓线像素。 这种技术使得即使对于复杂的图像也可以容易地执行区域填充。