High-Density Versatile Multilayer Disc
HD Versatile Multilayer Disc is an optical disc digital media format for storing high-definition video and other high-quality media content. Up to 5 GB of data is placed on one layer of an HD VMD. But due to the multi-layered disks (up to 20 layers), their capacity reaches 100 GB.
In addition, unlike Blu-ray discs and HD DVDs, it reads and writes using a red (650nm) laser rather than a blue-violet (405nm) laser. However, Making it possible to produce devices that are compatible with CDs and DVDs. High-Density Versatile Multilayer Disc can store 1080p video encoded in MPEG-2, VC-1, and H.264 formats, with a maximum bit rate of up to 40Mbps. HD VMD supports 7.1 Dolby Digital, Dolby Digital Plus, and DTS audio.
HD Versatile Multilayer Disc Specifications
Despite the small amount of information available. The discs are based on a DVD -like format. Using multiple layers, up to a maximum of 20 layers, to store enough information to play the 1080p high-definition format. With 4 layers, you can get 24 GB of information. Hoping to increase with the introduction of additional layers up to 60 GB of information.
While a Blu-ray disc uses a blue laser, VMD uses a red laser. This means it stores less information than its competitors. However, these formats currently only use 1 or 2 layers, experimenting with 4 layers. While VMD already uses 4 layers as a standard, reaching 20 GB, which is comparable to a single HD DVD (15 GB) layer or a single layer BD. (25 GB).
With a capacity of 20 GB, it allows you to play high-definition ( HDTV ) movies just like its competitors. This format was the NTSC version of HD DVD sold in the US.
VMD (short for Multilayer Versatile Disc) is a multilayer optical disc designed to store a large amount of information. It can hold 10 times more information than a standard DVD and about 5 times more than DVD9.
The most important advantage of using a VMD is having a large capacity. This disc can record and play HD video. An optical storage device must have at least 20 GB of storage in order to play a full HD movie. While existing DVDs only have 4.7 GB of storage. The VMD format is also convenient for video game producers and software developers, as it eliminates the need for multiple discs.
VMD is a multilayer reflective disc. Standard CD/DVD technologies do not allow the production of discs with more than two layers (on one side of the disc). Versatile Multilayer Disc offers a layered technology that makes use of the unused or inefficiently used, as we used to call it, space on the disk itself.
VMD technology, in turn, makes it possible to create discs (and compatible players) with 5, 10, and a maximum of 20 layers. VMD is a multilayer reflective disc
The term “High definition” (HD) is used to refer to high definition products or systems. That has the advantage of being able to handle a much larger amount of audio and video information. The ability to process information is of paramount importance for the infrastructure of the electronics, telecommunications, and information markets.
High definition systems need more bandwidth to store and transmit HD video. The two main technological components of HD systems (HDS) are digital signal processing (DSP) for compression and quality playback and a high-resolution display.
It is clear that HDS will become an integral part of any future commercial applications such as multimedia applications in computing and new methods in medicine, industry, publishing, film, education, and telecommunications.
VMD is now adapting to modern red laser technology. (Therefore, the price offered to the consumer is affordable and not much different from DVD prices). Looking ahead to the future, it can be argued that VMD technologies will be able to easily adapt to the blue laser as well. When the price of the blue laser and the associated manufacturing process become competitive.