On a daily basis I’m still asked about the different forms of blank disc available on the market and the differences between them. For this reason I thought this week we would look back at all the commonly available disc based media formats and the differences between them; from the humble CD to the more recent BluRay and HD-DVD. CD-R - Whilst the CD format has been available since the early 1980’s, the specification for the writable version (CD-R) was published further down the line, in 1988. Whilst available in a number of different variants, the most commonly available is the 700mb version with a write speed of typically 52x (52 times the speed of the original CD-R standard). Whilst they don’t offer the storage capacity of newer alternatives such as DVD, they are still ideal for storing smaller amounts of data, for example a music album. CD-RW is a rewritable variant of the write once CD-R disc. DVD-R - Typically capable of housing a maximum of 4.7Gb (4700mb) of data and data writing speeds much higher the CD-R format.
As a result DVD-R is an ideal solution for the storage of larger files and movies. Like their counterpart the CD there is also RW (Rewritable) version available as well as a Dual Layer version that uses two separate layers of dye on the same disc which nearly doubles the capacity to whopping 8.5 GB. DVD+R - A rival format to the DVD-R, the DVD+R is technically very similar, but there are a number of subtle differences that distinguish the two. Whilst most end users wouldn’t notice between the two, the existence of the two formats means that if buying a DVD disc, you need to ensure that you pick the correct format unless you have a drive which supports both. As with DVD-R, this format is also available in DVD+RW and DVD+RW Dual Layer. DVD-RAM - A rival format to rewritable DVD-RW and DVD+RW media, the most recent version of the DVD-RAM standard has a top data capacity of 9.7Gb. Thought of as a very dependable, as well as being intended for regular re-recording (a DVD-RAM disc can be over-written around 100,000 times unlike 1,000 times for a DVD-RW or +RW disc), this format is great for regular data backup. Its reputation has been held back by the fact it’s around five times the price of a ’RW or +RW disc. HD DVD - This format was developed by a consortium of companies with the intention that it would be the successor of the conventional DVD. Exactly the same physical size as a standard DVD disc, this format allowed a maximum storage capacity of 15Gb per layer with a Dual Layer version to double this space to 30Gb.
Recordable discs for Auto Brake Pads Manufacturers(https://www.hzgoldenstar.com/) this format are still expensive, costing over a fiver each. Unfortunately Toshiba who were the main driving force behind HD DVD, announced a couple of days ago that they would no longer be developing or manufacturing players and recorders for this format, meaning that it has essentially lost out to its main competitor, BluRay. BluRay Disc ’ Names as such because of the blue laser that reads the underside of the disc, the BluRay is the result of the collective efforts of numerous companies that form the BluRay Disc Association. A technologically advanced format to HD DVD, BluRay discs can store 25Gb per layer this means a Dual Layered disc will hold a massive 50Gb of data which means they are great for HD movies. The triumph victory for this type of disc is almost a direct result of the Playstation 3 being having a reader straight out of the box. There are also options regarding the type of surface on the top of the disc. A technology known as Lightscribe will allow you to literally etch a design in to the top of the disc using a laser built in to a compatible writer. Alternatively other discs have a white, paper style surface which allows the printing of directly on to the disc using a compatible printer. Next week we’ll look at these technologies in more detail.
As a result DVD-R is an ideal solution for the storage of larger files and movies. Like their counterpart the CD there is also RW (Rewritable) version available as well as a Dual Layer version that uses two separate layers of dye on the same disc which nearly doubles the capacity to whopping 8.5 GB. DVD+R - A rival format to the DVD-R, the DVD+R is technically very similar, but there are a number of subtle differences that distinguish the two. Whilst most end users wouldn’t notice between the two, the existence of the two formats means that if buying a DVD disc, you need to ensure that you pick the correct format unless you have a drive which supports both. As with DVD-R, this format is also available in DVD+RW and DVD+RW Dual Layer. DVD-RAM - A rival format to rewritable DVD-RW and DVD+RW media, the most recent version of the DVD-RAM standard has a top data capacity of 9.7Gb. Thought of as a very dependable, as well as being intended for regular re-recording (a DVD-RAM disc can be over-written around 100,000 times unlike 1,000 times for a DVD-RW or +RW disc), this format is great for regular data backup. Its reputation has been held back by the fact it’s around five times the price of a ’RW or +RW disc. HD DVD - This format was developed by a consortium of companies with the intention that it would be the successor of the conventional DVD. Exactly the same physical size as a standard DVD disc, this format allowed a maximum storage capacity of 15Gb per layer with a Dual Layer version to double this space to 30Gb.
Recordable discs for Auto Brake Pads Manufacturers(https://www.hzgoldenstar.com/) this format are still expensive, costing over a fiver each. Unfortunately Toshiba who were the main driving force behind HD DVD, announced a couple of days ago that they would no longer be developing or manufacturing players and recorders for this format, meaning that it has essentially lost out to its main competitor, BluRay. BluRay Disc ’ Names as such because of the blue laser that reads the underside of the disc, the BluRay is the result of the collective efforts of numerous companies that form the BluRay Disc Association. A technologically advanced format to HD DVD, BluRay discs can store 25Gb per layer this means a Dual Layered disc will hold a massive 50Gb of data which means they are great for HD movies. The triumph victory for this type of disc is almost a direct result of the Playstation 3 being having a reader straight out of the box. There are also options regarding the type of surface on the top of the disc. A technology known as Lightscribe will allow you to literally etch a design in to the top of the disc using a laser built in to a compatible writer. Alternatively other discs have a white, paper style surface which allows the printing of directly on to the disc using a compatible printer. Next week we’ll look at these technologies in more detail.
コメント