Re: Pedantic - slightly inaccurate
"All digital logic without a microprocessor in sight, and you can see from first principles how to decode the signal."
Also a starting point to building a Macravision[*]<??> copy protection defeat device.
* The one one that used to flash full white/full black across the top few lines of the frame where a Teletext signal would go, so as to screw up the picture/colour lock when copying VHS tapes.