INTERACTIVE VIDEO DISC

A Video Standard or Video Essentials do not play through from beginning to end without requiring the viewer to make some decisions about the direction of the program. Interactivity between the disc's program content and the viewer is required. There are three basic levels of interactivity. Both A Video Standard and Video Essentials on laserdisc are Level 1 programs; interactivity is manual, via the player's remote control. Level 2 discs incorporate a separate interactive program on the disc itself. Each time the disc is placed in a special Level 2 player, the programming information from the videodisc is loaded into the player's memory. Level 3 has an outboard program to run the disc. The standard consumer DVD has its own built in program running the disc. In laserdisc terms, all DVD's would at least qualify as Level 2 discs.