Full Form of DVD

What is DVD?

Digital Versatile Disc, which is the full form of DVD, is a digital optical disc storage format that was developed and invented in 1995 and used to store high-capacity files, like movies and top-standard videos. The standard optical digital storage at this time was VCDs but DVDs had higher capacity than compact discs of almost the same size and shape.

There was an unofficial full name for the DVD, which was named Digital Video Disc. But Mass technology forums denied this full term as DVDs were not merely restricted to videos. There were four companies 1995 called Philips, Sony, Panasonic and Toshiba that discovered and developed it.

What Amount of Data Can a DVD Store?

DVDs have varying storage capacity.

• One of the most prevalent DVDs is the single-sided, single-layer disc, which is capable of storing 4.7 GB of data.
• The double-layer, single-sided disc can store between 8.5-8.7 GB.
• The capacity of the double-sided, single-layer disc is 9.4 GB.
• Despite being uncommon, the double-sided, double-layer disc can store up to 17.08 GB of data.

Difference Between DVD and CD

• DVDs are produced from the same materials as CDs, but they include two reflective layers that allow for increased storage space, whereas CDs only have a single reflective layer. Thus, a DVD can store more data bits than a CD, enhancing its storage capacity and efficiency.
• CDs are optical discs that are used to store bits of data. A typical CD has a storage capacity of 700 MB, with each byte consisting of 14 bits. The first layer of a compact disc is made of polycarbonate plastic and is used to store data. The information is stored in depressions on the polycarbonate surface.
• The Digital Versatile Disc (DVD) was created so that digital data may be stored without losing its quality. Since digital data is typically large, a more efficient storage method was required. A DVD can store seven times as much information as a CD.

History of DVD

• It was developed to replace VHS tapes and soon became famous as a storage device.
• Audio-CD was established as an entertainment tool in 1972.
• Two types of video disks were developed, the SD (Super Density) and the MMCD (Multimedia Compact Disc) in 1993.

Categories of DVD

A DVD comes in two different sizes.

• 120 mm – It is mainly used for software, operating system storage, videos, and so on.
• 80 mm – It is mainly used for compact devices such as portable music players & video cameras etc.

Depending on their operations:

• DVD-ROM: used only for reading.
• DVD-R: used to record data.
• DVD-RW: readable and writable.

Benefits of DVD

• High capacity storage.
• Data can be preserved on both sides of the DVD.
• Relatively inexpensive.
• Great quality of sound and picture.