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1. 发明授权

US06924813B2 Technique for eliminating stale information from a computer graphics buffer 失效
标题翻译：从计算机图形缓冲区中消除过时信息的技术
公开(公告)号：US06924813B2
公开(公告)日：2005-08-02
申请号：US09823505
申请日：2001-03-31
申请人： Calvin Selig , Ethan W Gannett , Kendall F Tidwell
发明人： Calvin Selig , Ethan W Gannett , Kendall F Tidwell
IPC分类号： G09G5/14 , G09G5/36 , G09G5/37 , G09G5/393
CPC分类号： G09G5/393 , G09G5/14
摘要： A method of eliminating stale information from a computer graphics buffer. The method facilitates switching from a fast clear mode to a non fast clear mode during the lifetime of a region of interest such as a window: A clear count value associated with a pixel is read and compared with a current clear count. If the counts are not equal, a replacement value is written into the pixel. The process may be repeated for each pixel in the region. Block transfer hardware and fast clear hardware may be used together to perform the procedure in a high-performance manner: A source region and a destination region for the block transfer operation are both set to the region of interest. As the block transfer proceeds, each pixel is written either with its own value or with a replacement value depending on whether the clear count for the pixel is current.
摘要翻译：从计算机图形缓冲器中消除过时信息的方法。该方法有助于在诸如窗口的感兴趣区域的寿命期间从快速清除模式切换到非快速清除模式：读取与像素相关联的清晰计数值并将其与当前清除计数进行比较。如果计数不相等，则将替换值写入像素。可以对该区域中的每个像素重复该过程。块传输硬件和快速清除硬件可以一起使用以以高性能的方式执行：用于块传输操作的源区域和目的地区域都被设置为感兴趣的区域。随着块传送的进行，取决于像素的清除计数是否为当前值，每个像素都以自己的值或替换值写入。

2. 发明授权

US06806884B2 Technique for filling a region of memory using multiple region fill processors 失效
标题翻译：使用多个区域填充处理器填充内存区域的技术
公开(公告)号：US06806884B2
公开(公告)日：2004-10-19
申请号：US09963226
申请日：2001-09-25
申请人： Roy Troutman , Calvin Selig
发明人： Roy Troutman , Calvin Selig
IPC分类号： G09G5399
CPC分类号： G06T1/60
摘要： A technique for filling a memory area that represents a rectangle. The rectangle or a first section thereof may be divided into i+j horizontal subsections. The i horizontal subsections may be filled in a first pass using i region fill processors. And the j horizontal subsections may be filled in a second pass using j region fill processors. A second section of the rectangle may be filled by dividing the second section into n vertical subsections having equal width and filling the n vertical subsections using n region fill processors.
摘要翻译：一种用于填充表示矩形的存储区域的技术。矩形或其第一部分可以被划分为i + j个水平子部分。可以使用i区域填充处理器在第一遍中填充i个水平子部分。并且j个水平子部分可以使用j个区域填充处理器填充在第二遍中。可以通过将第二部分划分成具有相等宽度的n个垂直子部分并且使用n个区域填充处理器填充n个垂直子部分来填充该矩形的第二部分。

3. 发明授权

US07050069B2 Fast clear technique for display regions having subregions 失效
公开(公告)号：US07050069B2
公开(公告)日：2006-05-23
申请号：US09823660
申请日：2001-03-31
申请人： Calvin Selig , Roy Troutman
发明人： Calvin Selig , Roy Troutman
IPC分类号： G09G5/00
CPC分类号： G09G5/393
摘要： A technique for performing clear operations in a region having a subregion. Responsive to a first clear command: perform an initialization in which stale information is eliminated from pixels outside the subregion. Responsive to subsequent clear commands: update a current clear count for the region; and write the updated current clear count into clear count values associated with pixels outside the subregion. Prior to creating the subregion, a conventional fast clear technique may be employed in the region. After creating the subregion and during its life, the inventive technique may be employed. After the subregion is discontinued, the conventional technique may once again be employed. The inventive technique may be employed optionally depending on the percentage of the region's area occupied by the subregion.

4. 发明授权

US06911990B2 Fast clear technique for display regions having subregions 有权
标题翻译：具有子区域的显示区域的快速清晰技术
公开(公告)号：US06911990B2
公开(公告)日：2005-06-28
申请号：US09823483
申请日：2001-03-31
申请人： Calvin Selig , Roy Troutman
发明人： Calvin Selig , Roy Troutman
IPC分类号： G09G5/30 , G09G5/393 , G09G5/00
CPC分类号： G09G5/30 , G09G5/393
摘要： A technique for performing clear operations in a region having a subregion. Responsive to a clear command: a current clear count for the region is left unchanged; a predetermined value is written into the pixels of the subregion; and the current clear count is written into pixel clear counts of the subregion. Prior to creating the subregion, clear commands may be handled according to a conventional fast clear technique. After creating the subregion and during the life of the subregion, clear commands may be handled according to the inventive technique. After the subregion is discontinued, clear commands may once again be handled according to the conventional technique. The inventive technique may be employed optionally depending on the percentage of the region's area occupied by the subregion.
摘要翻译：一种用于在具有子区域的区域中执行清晰操作的技术。响应一个明确的指令：该地区目前的清晰计数保持不变; 将预定值写入该子区域的像素中; 并且当前清除计数被写入子区域的像素清除计数。在创建子区域之前，可以根据常规的快速清晰技术来处理清除命令。在创建该次区域之后并且在次区域的生命周期中，根据本发明的技术可以处理明确的命令。在子区域停止之后，根据常规技术可以再次处理清除命令。本发明的技术可以任选地取决于该区域所占据的区域的百分比。

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