Back ليزرديسك Arabic Lazerdisk Azerbaijani Laserdisc Bulgarian Laserdisc Catalan لەیزەر دیسک CKB Laserdisc Czech LaserDisc Danish Laserdisc German Μέσο αποθήκευσης δεδομένων#Laserdisc Greek Laserdisko Esperanto
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 A LaserDisc held | |
| Media type | Optical disc |
|---|---|
| Encoding | NTSC, PAL, MUSE, HD‑MAC, PALplus |
| Capacity |
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| Read mechanism | 780 nm laser diode (early players used He–Ne laser) |
| Standard | LaserVision |
| Developed by | |
| Dimensions |
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| Usage | Home video |
| Extended to | |
| Released | December 11, 1978 (as DiscoVision) |
| Discontinued | September 21, 2001 (films) July 2009 (production)[1][2] |
| Optical discs |
|---|
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LaserDisc (LD) is a home video format and the first commercial optical disc storage medium. It was developed by Philips, Pioneer, and the movie studio MCA, and was initially licensed, sold, and marketed as DiscoVision in the United States in 1978. The discs typically have a diameter of 300 millimeters (11.8 in), similar in size to the 12-inch (305 mm) phonograph record. Unlike most later optical disc formats, LaserDisc is not fully digital; it stores analog video signals.
LaserDisc was the first home video format to offer digitally encoded surround sound, and its 425 to 440 horizontal lines of resolution was nearly double that of competing consumer videotape formats, VHS and Betamax. Despite these advantages, the format failed to achieve widespread adoption in North America, primarily due to the high cost of players and their inability to record.
In contrast, LaserDisc was significantly more popular in Japan and in wealthier regions of Southeast Asia, including Singapore, and Malaysia, and it became the dominant rental video format in Hong Kong during the 1990s.[3] Its superior audiovisual quality made it a favorite among videophiles and film enthusiasts throughout its lifespan.[4]
The technologies and concepts developed for LaserDisc laid the groundwork for subsequent optical media formats, including the Compact disc (CD), DVD, and Blu-ray. Production of LaserDisc players continued until July 2009, when Pioneer ceased manufacturing them.
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