Recording video in the 1950s

[Mike Watterson]

Also for PCM to video (at 44.1 kHz or 48 kHz) you have to only output during visible part of video line, so serial clock rate is multiplied by (line duration)/(visible line duration), about x1.07. The raw bit rate of CD Audio (excluding error correction data or headers etc) is 1411.2 k bps (assuming 16 bits, 2 channels and 44.1 kHz sampling). So the data rate during visible lines is about 1510 k bps. It would want to be encoded somehow. If QPSK is used then symbol rate is about 755 kHz, if some simple scheme is used then 3020 kHz bandwidth is needed.