Ongoing development
Front of an experimental 200GB rewritable Blu-ray Disc
Although the Blu-ray Disc specification has been finalized, engineers continue working to advance the technology. Quad-layer (100 GB) discs have been demonstrated on a drive with modified optics (TDK version) and standard unaltered optics ("Hitachi used a standard drive."). Hitachi stated that such a disc could be used to store 7 hours of 32 Mbit/s video (HDTV) or 3.5 hours of 64 Mbit/s video (Cinema 4K). In August 2006, TDK announced that they have created a working experimental Blu-ray Disc capable of holding 200 GB of data on a single side, using six 33 GB data layers.
Also behind closed doors at CES 2007, Ritek revealed that they had successfully developed a High Definition optical disc process that extends the disc capacity to 10 layers. That increases the capacity of the discs to 250 GB. However, they noted that the major obstacle is that current reader and writer technology does not support the additional layers.
JVC has developed a three-layer technology that allows putting both standard-definition DVD data and HD data on a BD/DVD combo. If successfully commercialized, this would enable the consumer to purchase a disc which could be played on current DVD players, and reveal its HD version when played on a new BD player. The first 'hybrid' Blu-Ray/DVD combo is announced to be released February 18. The Japanese optical disc manufacturer Infinity has announced this. 'Code Blue' will feature four hybrid discs, which feature a single Blu-ray layer (25GB) and two DVD layers (9 GB) on the same side of the disc.
In January 2007, Hitachi showcased a 100 GB Blu-ray Disc, which consists of four layers containing 25 GB each. Unlike TDK and Panasonic's 100 GB discs, they claim this disc is readable on standard Blu-ray Disc drives that are currently in circulation, and it is believed that a firmware update is the only requirement to make it readable to current players and drives.
In December 2008, Pioneer Corporation unveiled a 400 GB Blu-ray disc, which contains 16 data layers, 25 GB each, and will be compatible with current players after a firmware update. A planned launch is in the 2009-2010 time frame for ROM and 2010-2013 for rewritable discs. Ongoing development is under way to create a 1 TB Blu-ray disc as soon as 2013..
At CES 2009 Panasonic unveiled the DMP-B15, the first portable Blu-ray Disc player and Sharp showed off the LC-BD60U and LC-BD80U series, the first LCD HDTVs with integrated Blu-ray players.
As of April 2008, a joint licensing agreement for Blu-ray Disc has not yet been finalized. A joint licensing agreement would make it easier for companies to get a license for Blu-ray Disc without having to go to each individual company that owns a Blu-ray Disc patent. For this reason a joint licensing agreement was eventually made for DVD by the DVD6C Licensing Agency.