When PLC receive one frame data, it checkout the frame. If the data is correct, it is saved in the appointed buffer. If not, PLC request the IPC resend it.

PLC每接收到一帧数据，对该帧数据进行异或校验，如果无误则存送到指定缓冲区，如果有误则请求重新发送。

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Today, the result of most data analysis resembles a single frame from a motion picture: a snapshot of one point in time.

目前，大多数数据分析的结果就像是动画中的一帧：某一时间点上的快照。

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One frame is used to specify multiple SQL queries, where each query defines a single layer and the spatial and non-spatial data is retrieved from your DB2 database.

其中一个框架用于指定多个 SQL 查询，每个查询定义一个层，并从 DB2 数据库中检索空间和非空间数据。

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According to some experts, 720p displays typically pick up just one 540-line field from each two-field 1080i frame, discarding the rest of the data, rather than sampling it.

ENGADGET: To 720p or not 720p? HDBlog raises the question.