> > The duplicator's ADC is 10-bit unsigned; the FPGA converts this to scaled 16-bit > > signed data ... > > So you have NTSC capture at 28.63 MSPS @ 16-bit > > Sorry to be pedantic but that claim is a bit of a stretch. you really only still have > it at 10 bit resolution, just expressed as a 16 bit value.
And it's being used to capture a signal with 1-bit useful depth. This is the RF signal off the disc that's being captured, not composite video. The captured bit depth just needs to be enough to deal with the gain/filtering effects in the laser front-end in the player.