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1. 发明授权

US6064440A Apparatus for inserting data into the vertical blanking interval of a video signal 失效
标题翻译：用于将数据插入视频信号的垂直消隐间隔的装置
公开(公告)号：US6064440A
公开(公告)日：2000-05-16
申请号：US004475
申请日：1998-01-08
申请人： Gregory S. Born , Paul A. Cousineau , Kenneth R. Thompson
发明人： Gregory S. Born , Paul A. Cousineau , Kenneth R. Thompson
IPC分类号： H04N7/088 , H04N7/087
CPC分类号： H04N7/088
摘要： An improved data inserter for inserting data into selected lines, including the vertical blanking interval, of a television or video signal. The data inserter includes a parallel interface for receiving data and a digital signal processor (DSP) for controlling the insertion of that data. A dual port memory structure is used to temporarily store data to be inserted. The dual port memory is associated with and connected to an autobuffer unit. Each video signal received by the inserter is provided to a switch which is also coupled to the autobuffer unit so that the switch may receive data stored in the dual port memory devices. When a selected line in a given video signal is detected by the DSP, it triggers the respective autobuffer unit which, in turn, transfers the data out of the dual port memory to the respective switch for insertion into the selected line of the video signal.
摘要翻译：一种改进的数据插入器，用于将数据插入电视或视频信号的选定行中，包括垂直消隐间隔。数据插入器包括用于接收数据的并行接口和用于控制该数据的插入的数字信号处理器（DSP）。双端口存储器结构用于临时存储要插入的数据。双端口存储器与自动缓冲器单元相关联并连接到自动缓冲器单元。由插入器接收的每个视频信号被提供给也被耦合到自动缓冲器单元的开关，使得开关可以接收存储在双端口存储器装置中的数据。当由DSP检测到给定视频信号中的选定行时，它触发相应的自动缓冲器单元，该自动缓冲器单元又将数据从双端口存储器传送到相应的开关，以便插入视频信号的选定行。

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