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Media type | Optical disc |
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Encoding | NTSC |
Capacity | Up to 800 MB |
Read mechanism | 780 nm wavelength semiconductor laser |
Developed by | Sony |
Dimensions | Diameter 120 mm (43⁄4 in) Thickness 1.2 mm (1⁄21 inch) |
Usage | Home video, video storage |
Extended from | LaserDisc, CDV |
Extended to | Video CD |
Released | 1990[1] |
Optical discs |
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Video Single Disc (VSD) is a disc-based format that carried the same analog video information as a LaserDisc, but on a 12-centimetre (4.75 inch) diameter CD-sized disc. It was spearheaded by Sony and was released in Japan in 1990.[2][3] It was a new variety of laserdisc and variation on the CD Video (CD-V) format, except that VSD disc carried only a video track (of up to 5 minutes' duration), and its associated audio, with no CD-compatible partition. The disc is the same size as a standard CD and holds five minutes of video with digital sound.[1][4] It did not have any additional audio tracks like CD-V. Like CD-V, VSD discs could be played back by multi-disc or LaserDisc players that had VSD playback capability.[5]
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