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公开(公告)号：US5889499A
公开(公告)日：1999-03-30
申请号：US683102
申请日：1996-07-16
CPC分类号： G09G5/395 , G09G2340/125 , G09G5/02
摘要： Disclosed is a system and method for mixing a plurality of graphics and video signals to create a desired output format, the desired output format being a mixture of the received signals. The mechanisim for achieving this rich format is a multi-modal graphics video overlay controller. The controller having a set of opcodes, selects a subset of the opcode set, this selection being a function of a desired output format of the mixed signals. The subset of opcodes is then utilized to control the means for selectively switching among the received graphics and video signals to create the desired output format. The selective switching is accomplished on a pixel by pixel basis.
摘要翻译： 公开了一种用于混合多个图形和视频信号以产生期望的输出格式的系统和方法，期望的输出格式是接收信号的混合。 实现这种丰富格式的机制是多模式图形视频覆盖控制器。 控制器具有一组操作码，选择操作码集合的子集，该选择是混合信号的期望输出格式的函数。 然后使用操作码的子集来控制用于在所接收的图形和视频信号之间选择性地切换的装置，以创建期望的输出格式。 选择性切换是以逐个像素为基础完成的。
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公开(公告)号：US5821918A
公开(公告)日：1998-10-13
申请号：US402862
申请日：1995-03-13
IPC分类号： G09G3/20 , G09G5/00 , G09G5/02 , G09G5/06 , G09G5/08 , G09G5/36 , G09G5/391 , G09G5/395 , G09G5/399 , G09G5/40 , H04N9/64 , G09G5/04
CPC分类号： H04N9/641 , G09G5/006 , G09G5/008 , G09G5/02 , G09G5/06 , G09G5/08 , G09G5/363 , G09G5/391 , G09G5/395 , G09G5/40 , G09G2310/0232 , G09G2320/0606 , G09G2320/0673 , G09G2340/0407 , G09G2340/125
摘要： A display interface device 20 is provided which includes inputs for receiving video data words, the video data words including control codes for controlling the output format of a display, and a video clock signal received from an associated video controller. A first-in/first-out memory 30 is also provided with a video data word clocked into memory 30 by the first clock and clocked out of memory 30 by a second clock generated from a clock received from an associated graphics controller.
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