 Hitachi stated that such a disc could be used to store 7 hours of 32 Mbit/s video (HDTV) or 3 hours and 30 minutes of 64 Mbit/s video (ultra-high-definition television).In August 2006, TDK announced that they had 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 ten layers, which increases the capacity of the discs to 250 GB.