PH-DVD
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PH-DVD is an optical storage format which aims to surpass Blu-ray and HD DVD in storage capacity. "PH" stands for Polar High-definition. Publicly announced on March 30, 2006. This technology "exploits the polarization element contained in all current DVD formats which is not being used for the physical encoding of the information on the disc. Polar High-definition will significantly increase both the speed and capacity of DVDs. Applications have been made for patents in respect of this technology. The PH-DVD format can be applied as a modification to increase the data read rate and capacity of any of the competing blue laser formats (such as Sony Blu-ray and Toshiba HD DVD). Moreover, the Polarizonics Technology may provide for a red-laser capability to support HD content. Thus, with the potential for over 100GB discs, this innovation is of particular importance for satisfying the coming demands of increased disc capacity of HD video content of movies and video games. Importantly Polarizonics Technology requires no change in the disc structure itself, and present mass replication equipment can be used without modification or additional costs. Hence, PT can be brought to market within a very short time scale. The PH-DVD format also introduces a new hardware level suppression of the possibility of unlicensed replication piracy". (http://www.tcmagazine.info/comments.php?shownews=12043&catid=6) Publicly announced on March 30, 2006, a company called Polarizonics Corp has created a disc that they claim will store 100GB on a single disc.
There are several articles pertaining to this new disc. http://www.engadget.com/2006/03/30/ph-dvd-format-claims-to-bump-discs-up-to-100gb.
The following text is copied from the following page/article: http://www.hdbeat.com/2006/03/30/new-ph-dvd-technology-triples-the-space-of-blue-and-red-laser-dv. "Dr. Oron Zachar, founder of Polarizonics Corp believes he can triple the capacity of DVDs, HD DVDs and Blu-ray Discs, without changing the disc structure, replacing mass reproduction equipment and providing a new layer of protection against piracy. We have no idea what any of that means, but apparently it adds up to disc capacities of over 100GB, which we do understand because it adds up to a-whole-freaking-lot of high-definition content. Of course the real question is whether this technology exists, is feasible and will ever be relevant to HDTV owning consumers, but it seems way too early to tell. Information on Mr Zachar and Polarizonics Corp is pretty limited, although he apparently is or was a professor at UCLA and they are hiring. Still, this sounds a lot like polaronics (yes, that is a /. article from 1999 and no, no such product exists)".
