Multichannel PCM optimum source selection control method
A control method and the best technology, applied in the direction of digital transmission system, electrical components, transmission system, etc., to achieve the effect of improving flight test efficiency, improving telemetry data quality, and improving quality
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[0012] The multi-channel PCM optimal source selector is composed of PCM data fusion processing equipment and its host computer software (see figure 1 ). The data fusion processing device receives the PCM data of the four channels, and performs subframe synchronization on the PCM data streams of the four channels, and reports the synchronization status of the data streams of each channel to the status judgment module, and at the same time, the synchronized framed data stored in the data cache. The state judgment module switches the data according to the synchronous state of the PCM data subframes of the four channels and the PCM data fusion mode (the fusion mode includes four-choice one, four-choice two, three-choice one, and two-choose one), and at the same time, the buffer area The data is output in an inherently clocked manner.
[0013] PCM synchronization includes subframe synchronization and subframe synchronization. When the synchronization word and subframe length are ...
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