IS A VIDEODISC SIGNAL DIGITAL?
No. The final output of a laservision videodisc is an analog NTSC standard television signal (at least in North America…other television standards, such as PAL and SECAM exist throughout the world). The SLICE OF LIFE and SLICE OF BRAIN videodiscs use the NTSC standard and thus are viewable through regular television sets. Each frame of a CAV formatted videodisc is like a still-frame from a video. These frames are not stored as individual files, such as a jpeg, gif, bmp, or pict file formats common in the computer world. They can only be recalled for playback by their individual videodisc frame numbers. Although the content of a videodisc is encoded in pits and landings and read by a laser, in the final analysis, the laservision videodisc is like a glorified, high quality, LP record, except it plays video in addition to sounds.
