The talks about a unified format between Sony and Toshiba have already hit a snag, and the news that TDK developed a Blu-Ray disc able to store 100GB will only make things worse.

In the middle of the war for a unified format, TDK announced during an expo in Tokyo that it succeeded in creating a Blu-Ray disc that uses 4 layers to store data, each of them with a capacity of 25GB.

For this, TDK used a laser with higher intensity than normal to write data and also added a few modifications to the material of the layer that stores the data.

The previous record also belonged to TDK and consisted of a 50GB Blu-Ray disc. Toshiba has announced during this week that it has succeeded in developing a HD-DVD disc which uses 3 layers and is able to store 45GB of information.

TDK's disc is still a prototype and to become a standard, it has to be approved by Blu-Ray Disc Association.

If the new format is approved, the first 100 GB Blu-Ray discs will appear in 2007.

The launching of this disc comes only to give Blu-Ray an even bigger edge over HD-DVD regarding storage capacity.