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    • 1. 发明申请
    • DATA PROCESSING UNIT, DRAWING APPARATUS AND PIXEL PACKER
    • 数据处理单元,绘图设备和像素包装机
    • US20090225084A1
    • 2009-09-10
    • US12209872
    • 2008-09-12
    • Shuhei KATOKoichi Usami
    • Shuhei KATOKoichi Usami
    • G06T11/20G06F12/08G06F9/302
    • G06T11/40G06F12/0875G06T1/60G09G5/001G09G5/393G09G2360/121
    • A data processing unit for performing a high speed drawing operation of arbitrary patterns even in individual pixels is provided. It is assumed that the color mode is set to 3 bits per pixel. A pixel “N” is written to a drawing position designated by a byte address [29:3] and a bit address [2:0]. The subsequent pixel “N+1” is written immediately after the pixel “N”. The next subsequent pixel “N+2” is written immediately after the pixel “N+1” to span the adjacent bytes. Thereby, the pixel data is continuously stored within each byte and across the boundary between bytes with no space. In this case, the operation of writing pixel data, i.e., the drawing is performed not in words or bytes but in pixels. In addition to this, high speed drawing is possible by the use of a caching system.
    • 提供了即使在各个像素中执行任意图案的高速绘图操作的数据处理单元。 假设颜色模式被设置为每像素3位。 像素“N”被写入由字节地址[29:3]指定的绘图位置和位地址[2:0]。 随后的像素“N + 1”被立即写入像素“N”之后。 紧接在像素“N + 1”之后写入下一个后续像素“N + 2”以跨越相邻字节。 由此,像素数据被连续地存储在每个字节之间并跨越不具有空格的字节之间的边界。 在这种情况下,写入像素数据(即,绘制)的操作不以字或字节执行,而是以像素执行。 除此之外,通过使用缓存系统可以实现高速绘图。