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| Media type | Optical disc |
|---|---|
| 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]
- ^ a b Video Magazine - Volume 14, Issue 8 - Page 17
- ^ Weekly Television Digest, with Consumer Electronics - 1990 “New laserdisc format — Video Single Disc (VSD) — is due in Japan next month. The 4.75" disc is same size as standard CD, but carries 5 min. of video and audio”.
- ^ Weekly Television Digest, with Consumer Electronics - Google books
- ^ Video Magazine - Volume 14, Issue 8 - Page 17. “A new variety of laserdisc called the video single disc (VSD) has hit the Japanese market. Intended for use in combi players, the five-inch CD-sized discs hold five minutes of video with digital sound, and list for about $8 in Japan. Though plans for its U.S. introduction have not been announced, VSD is seen as a possible replacement for the failing CD-Video format, which has confused the public with its odd combination of five minutes of video and 20 of audio”.
- ^ Telecommunications update - Volume 6 - Page 27 - “A new laserdisc format — video single disc (VSD) - is due in Japan. The 4.75 inch disc is the size of a standard CD, but carries five minutes of video and audio so it can be played in a multidisc player”.