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    • 10. 发明授权
    • Logical partitioning of gamma ramp frame buffer for overlay or animation
    • 用于叠加或动画的伽马斜坡帧缓冲区的逻辑分区
    • US5600773A
    • 1997-02-04
    • US197652
    • 1994-02-16
    • Michael T. VanoverLinas L. VepstasJeffrey A. Wilkinson
    • Michael T. VanoverLinas L. VepstasJeffrey A. Wilkinson
    • G06T15/70G06T1/00
    • G09G5/06G09G2340/0428G09G2340/12G09G5/022G09G5/39
    • Methods, systems and programs for partitioning an RGB gamma ramp frame buffer of a workstation into groupings of bit planes to isolate for independent generation the images of multiple objects displayed on a common video screen. According to a preferred practice, groups of bit planes are masked while others are written with scaled and off-set data suitable to represent shaded three-dimensional images. A matching partition of the color palettes in the digital to analog converters ensures consistency in the translation from digital frame buffer data to analog red-green-blue (RGB) color signals. The images as stored in the frame buffer can be arranged in any order of overlay priority. Retention of static image data in a partition reduces the graphics processor load by eliminating the need for regenerating the static component of a complex animation, thereby faciliting real-time motion or user interaction. Losses in color bandwidth resolution are substantially offset through the use of dithering techniques.
    • 用于将工作站的RGB伽马斜坡帧缓冲区分为位平面分组的方法,系统和程序,以隔离以独立生成在公共视频屏幕上显示的多个对象的图像。 根据优选的做法,对位平面组进行掩蔽,而其它的是用适于表示阴影的三维图像的缩放和偏移数据写入的。 数字到模拟转换器中调色板的匹配分区确保了从数字帧缓冲器数据到模拟红 - 绿 - 蓝(RGB)颜色信号的转换的一致性。 存储在帧缓冲器中的图像可以以覆盖优先级的任何顺序排列。 保留分区中的静态图像数据可以减少图形处理器的负担,因为无需重新生成复杂动画的静态组件,从而促进实时运动或用户交互。 彩色带宽分辨率的损失通过使用抖动技术基本上被抵消。