Electronics > Projects, Designs, and Technical Stuff
Digital FPV video for drone racing
Marco:
--- Quote from: ogden on January 23, 2019, 07:13:23 pm ---What's the point of building 60Hz digital system if by design it's latency cannot be lower than existing NTSC (60Hz half-frames)?
--- End quote ---
Even if you just did a pure PCM YUV encoding it would be an improvement on NTSC, it's not bandwidth efficient. The blackbox synch algorithms can almost certainly be improved upon too.
StillTrying:
--- Quote from: hexahedron on January 23, 2019, 07:04:44 pm ---but what if we just improved the analog standard? Obviously ntsc has a lot of issues when it comes to how color is encoded,
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Just switch the camera to PAL. :)
For a not too difficult thing to try, I quite like the idea of PLL recreating the video syncs between the RX and LCD monitor, so that they're still there for the monitor during the bad video to no video times. It's in this post:
https://www.eevblog.com/forum/projects/digital-fpv-video-for-drone-racing/msg2139877/#msg2139877
Marco:
--- Quote from: hexahedron on January 23, 2019, 07:04:44 pm ---Thoughts?
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I'd spend a quarter of the bandwidth on interlaced HQVGA YUV at 60 Hz, then the rest on digital. If digital fails for a block interpolate the "analogue" signal.
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