发明授权
US5680175A Video signal conversion apparatus having a common frame memory for video
signals having different synchronizing signals
失效
具有用于具有不同同步信号的视频信号的公共帧存储器的视频信号转换装置
- 专利标题： Video signal conversion apparatus having a common frame memory for video signals having different synchronizing signals
- 专利标题（中）： 具有用于具有不同同步信号的视频信号的公共帧存储器的视频信号转换装置
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申请号： US513022申请日： 1995-08-09
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公开(公告)号： US5680175A公开(公告)日： 1997-10-21
- 发明人: Norifumi Yanai , Ryo Fujita , Koyo Katsura , Yasushi Fukunaga
- 申请人： Norifumi Yanai , Ryo Fujita , Koyo Katsura , Yasushi Fukunaga
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-235925 19910917; JPX4-45775 19920303
- 主分类号： G06T1/20
- IPC分类号： G06T1/20 ; G09G5/36 ; G09G5/39 ; G09G5/399 ; H04N5/262 ; H04N7/26 ; H04N7/50 ; H04N7/01
摘要：
An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input portion, a video output portion, a controller for selecting connection of each element to the video input or output portion, and an image drawing portion for reading and writing video data from and in the memory elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output portions can be adaptively varied.
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