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DVD

technology Maturity 9-11 Next article →

A DVD is a way to store digital data on a shiny disc.

DVD logo
DVD logo

This format can hold many things like video programs, software, and computer files. DVDs are very useful because they hold much more information than a compact disc, or CD. Even though they hold more data, they are the same size as a CD. A single-layer DVD can hold up to 4.7 GB of data. A dual-layer disc can hold up to 8.5 GB. Some special discs with two layers on both sides hold up to 17.08 GB.

Comparison disk storage
Comparison disk storage

There are different ways these discs work depending on their type. Most movies come on DVD-ROM discs, which are made using molding machines. These machines physically stamp the data onto the disc. On these discs, you can only read the data, not write or erase it. Other discs are made for recording. A DVD-R or DVD+R disc can be recorded only one time. However, rewritable discs like the DVD-RW can be recorded and erased many times.

Sony DVD+RW
Sony DVD+RW

Creating the DVD was a big job involving many different companies. In 1995, two groups were making different types of discs. One group was backed by Philips and Sony, and they called their format the Digital Video Disc. Another group included companies like Toshiba and Hitachi, who supported the Super Density disc. Five computer companies, including IBM and Microsoft, wanted only one single format to exist. They even asked Lou Gerstner from IBM to help bring the groups together. Eventually, the groups agreed to combine their ideas into one standard.

schouhamerimmink
schouhamerimmink

The DVD format was first released in Japan on November 1, 1996. At first, it was used mostly for music videos. The first big movie releases from Warner Home Video arrived in December 1996. In the United States, the format launched in seven test markets on March 24, 1997. On its launch day, there were about 32 different titles available. These titles came from libraries like Warner Bros., MGM, and New Line. By the year 2001, DVD players were outselling VCRs in the United States.

DVDs on Library Shelves
DVDs on Library Shelves

You might recognize DVDs from things you use at home. Many people used them to watch movies instead of using old VHS tapes. They are also used in video game consoles. For example, the PlayStation 2 was the first console to run DVDs. Other systems like the Xbox and Xbox 360 also use them for games. Some people even use special DVD combos that work with a TV.

PS2-Fat-Console-Set
PS2-Fat-Console-Set

These discs helped change how we watch movies and play games.

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🖼️ Images & Media (11)
File:DVD logo.svg
DVD logo.svg
File:schouhamerimmink.jpg
schouhamerimmink.jpg
File:PS2-Fat-Console-Set.jpg
PS2-Fat-Console-Set.jpg
File:Comparison disk storage.svg
Comparison disk storage.svg
File:Sony DVD+RW.jpg
Sony DVD+RW.jpg
File:Sony CRX310S-Internal-PC-DVD-Drive-Opened.jpg
Sony CRX310S-Internal-PC-DVD-Drive-Opened.jpg
File:Dvdpencilrsizecomparison.png
Dvdpencilrsizecomparison.png
File:Dvd-burning-cutaway3.JPG
Dvd-burning-cutaway3.JPG
File:Dismdvd.jpg
Dismdvd.jpg
File:QPxTool DVD error rate graph.png
QPxTool DVD error rate graph.png
File:DVDs on Library Shelves.JPG
DVDs on Library Shelves.JPG
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