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Frame synchronization device for a synchronous digital bit stream divided into blocks by means of a block code and structured in frames
Frame synchronization device for a synchronous digital bit stream divided into blocks by means of a block code and structured in frames
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机译:用于同步数字比特流的帧同步设备,该数字同步流通过分组码被划分为多个块并以帧为单位
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摘要
A frame synchronization device for a synchronous digital bit stream divided into blocks by means of a block code and structured in frames comprises a frame alignment word configuration recognition circuit generating for each recognized configuration a recognition signal that is directed to a frame alignment acquisition control circuit through the intermediary of a configuration selection circuit. This circuit operates under the control of a time window definition circuit driven by a block timebase and a frame timebase and is adapted to select only recognition signals corresponding to alignment word configurations correctly placed relative to the blocks. The sorting done by the configuration selector eliminates most imitation alignment words and therefore accelerates significantly the synchronization process.
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