FVD, or Forward Versatile Disc, is an offshoot of DVD developed in Taiwan jointly by the Advanced Optical Storage Research Alliance (AOSRA) and the Industrial Technology Research Institute (ITRI) as a more inexpensive alternative for high-definition content. The disc is similar in structure to a DVD, in that pit length is the same and a red laser is used to read it, but the track width has been shortened slightly to allow the disc to have 5.4GB of storage per layer as opposed to 4.7GB for a standard DVD. The specification allows for up to three layers for total of 15GB in storage. WMV9 is used as the video codec allowing for 135 minutes of 720p video on a dual layer disc and 135 minutes of 1080i video on a 3-layer disc. FVD uses AAES copy protection which is one of the same schemes used in both HD-DVD and Blu-Ray discs. FVD is not expected to be marketed outside of Taiwan. DVD-R writing/reading side DVD Purple 4. ... Windows Media Video (WMV) is a generic name for the set of proprietary streaming video technologies developed by Microsoft. ... A DVD disk that holds twice as much data as a single layer disk. ... HD-DVD disc HD DVD (High Definition DVD) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data storage media and... Blu-ray discs Blu-ray Disc is a next-generation optical disc format jointly developed by a group of leading consumer electronics and PC companies called the Blu_ray Disc Association (BDA), which succeeds the Blu_ray Disc Founders (BDF). ...
An FVD disc can either be a FVD-1 or FVD-2 disc: FVD-1: The coding format of the first-generation of FVD adopts 8/16 modulation codes (same as DVD). FVD-2: The second-generation will use the more efficient 8/15 coding for increasing the ECC capability (to avoid DVD patents).
The minimum "spot size" on which a laser can be focused is limited by diffraction, and depends on the wavelength of the light and the numerical aperture of the lens used to focus it.
Because the Blu-ray standard places data so close to the surface of the disc, early discs were susceptible to dust and scratches and had to be enclosed in plastic caddies for protection.
Java will be used to implement interactive menus on Blu-ray discs, as opposed to the method used on DVD video discs, which uses pre-rendered MPEG segments and selectable subtitle pictures and is considerably more primitive.
FVD is a red-laser-based high-definition DVD-like format which was driven by Taiwan’s AOSRA in conjunction with the ITRI.
FVD based products are being launched in China and Taiwan with plans for expansion into other worldwide markets in the future, including an unveiling at the coming Consumer Electronics Show (CES 2005) taking place in January at Las Vegas, US.
The FVD format differs technologically from the DVD standard in physical format, compression (encoding) and decoding, and content protection and is therefore not subject to DVD royalty charges.
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