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1. 发明授权

US06400852B1 Arbitrary zoom “on -the -fly” 失效
标题翻译：任意放大“on-the”
公开(公告)号：US06400852B1
公开(公告)日：2002-06-04
申请号：US09219815
申请日：1998-12-23
申请人： Edward J. Miller, II , Mark P. Rygh
发明人： Edward J. Miller, II , Mark P. Rygh
IPC分类号： G06K932
CPC分类号： G06T3/4007 , G09G5/395 , G09G2340/0414 , G09G2340/0421 , H04N5/2628 , H04N7/0122
摘要： A system and method of performing “on-the-fly” zooming (i.e., while the video display is in-motion) having infinite value scaling is provided to give the user the ability to zoom-up by any amount while viewing. The variable “on-the-fly” zooming function is performed by a user employing a user interface device, such as a mouse, to select a window of random size in a display screen which is playing an in-motion video display. The information obtained by the user interface device is converted into scaling information and base address information and are stored into temporary registers. On the next video synchronization signal, the scaling and base address information are loaded into registers used to perform scaling on the pixel data retrieved from the frame buffer area in the video system. The new base address ensures that the pixel data is retrieved so that only the data within the window is scaled. The retrieved video data is then scaled using the new scaling information.
摘要翻译：提供具有无限值缩放的执行“即时”缩放（即，视频显示在运动中）的系统和方法，以给予用户在观看时放大任意数量的能力。变量“即时”缩放功能由使用诸如鼠标之类的用户界面设备的用户在正在播放动态视频显示的显示屏中选择随机大小的窗口来执行。由用户接口设备获取的信息被转换为缩放信息和基地址信息，并被存储到临时寄存器中。在下一个视频同步信号中，缩放和基址信息被加载到用于对从视频系统中的帧缓冲器区域检索的像素数据执行缩放的寄存器中。新的基地址确保检索像素数据，以便仅缩放窗口内的数据。然后使用新的缩放信息对所检索的视频数据进行缩放。

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