[opendtv] One disk: DVD, HD-DVD & Blu-Ray
- From: Cliff Benham <cbenham@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 20 Sep 2006 22:01:12 -0400
http://www.tgdaily.com/2006/09/19/triple_format_dvd/
Warner Home Video claims to have come up with a potential solution to
the high definition DVD standards war.
It emerged yesterday that the company's top engineers have filed a
patent for a single disc that can store regular DVD, HD-DVD and Blu-ray.
The triple standard disc design is described in the patent application
as: " A multi-format optical disc comprising a substrate; a first data
layer disposed on said substrate, said first data layer conforming to a
first protocol.
"A second data layer supported on said substrate, said second data layer
conforming to a second protocol; and a transparent protective layer
disposed on top of said first and second layers."
The patent application adds: "A general problem with multiple formats of
discs is that disc manufacturers must make various types of discs of
each type in order to satisfy consumer demand for the content on those
discs.
"From the standpoint of a manufacturer, it is disadvantageous to have to
manufacture and distribute three different types of disc formats to
satisfy consumer demand for one product, such as a motion picture.
"Moreover, multiple formats of DVD discs create retail and consumer
confusion as to which format(s) to acquire or buy."
Warner explained that it will create a disc with a Blu-ray top layer
which also acts as a two-way mirror reflecting enough blue light to be
read by a Blu-ray player.
The technology will also let through sufficient light for an HD-DVD
player to disregard the Blu-ray recording and locate the HD-DVD layer
underneath. The reverse of the disc would carry an ordinary DVD recording
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