CDR Info reports the firsthybrid Blu-ray/DVD disc will be released in Japan in February by PonyCanyon
The Hybrid Blu-ray/DVD disc is a combination of a traditional DVD with the new high-definition Blu-ray format. Originally developed by JVC more than two years ago, the disc has a blue laser top layer (25GB); underneath there are two more layers just like an ordinary DVD (8.5GB). The Blu-ray and DVD layers are separated by a semi-reflective film that reflects blue light while it allows the red light to pass through the DVD layer underneath. The disc conforms to the "Blu-ray Disc, Hybrid Format" specifications released by the Blu-ray Disc Association.