What is laser disc ?

Laser Discs were the first high definition audio/video playback medium available for home theater systems. Approximately the size of vinyl long-playing phonograph records, these special discs combine digital audio and video data and require a special laser disc player for interface with the audio system and the video display device. Laser discs, although popular with early-adopting home theater enthusiasts, have never achieved widespread acceptance in the sale and rental markets. Although consumer acceptance has been low to moderate, these discs offer movie lovers several key benefits, including the ability to view films in their original screen aspect ratios, and to enjoy the audio soundtracks in Dolby surround, Dolby Digital, and Digital Theater Sound (DTS) formats.