Raf_IZ0QWM
Second Officer
Flight distance : 1640843 ft
Italy
Offline
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Thank you good video.
I like to learn more and more about Ocusync.
I'm pretty sure that the P1 and the S1 are the core of the SDR coding/encoding Ocusync protocol.
The S1 chip decodes only the part of the Ocusync relating to the communication of the commands, extrapolates the ocusync packets and sends the video part to the smartphone that will manage the video stream.
For this it is also a bit slower and dependent on the decoding speed of the smartphone.
Instead, the P1 decodes all of the Ocusync, including the video. In fact we find it in the DJI FPV where there is no smartphone.
It is likely that they have also decided to insert it in the new SmartController to speed up the decoding operations.
It is a rather common situation for example in DVB-S2 digital communications: adding the header, scrambling, encoding, FEC, interleaving, etc., are performed by an FPGA, the rest by a CPU but an FPGA can also do everything, it depends on the speed you want to achieve in decoding.
But a CPU can do it all too. It is full of examples in GnuRadio. |
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