Blu-ray Forum - View Single Post - BD-RAM

Blu-Wave · 08-17-2004, 07:47 AM

Single Head BD drives are expected to go up to around 8-speed (288Mbps/36MBps) for applications that require such data-rates, and commercial 2x media already exist for 72Mbps and twin head 144Mbps (used in professional disc for data [PDD] and XDCAM products). DVD-RAM-type recording materials are available to be used at these higher speeds if required. Using a multi-channel optical head, it should be possible to read from and write to multiple layers at once - probably provided that the layers aren't written at the same position on the disc simultaneously - i.e., that there's a small spatial offset to allow cooling for each layer after each thermal write cycle.

08-17-2004, 07:47 AM	#6
Blu-Wave Active Member Member since:Apr 2004	Use Your Head ... Single Head BD drives are expected to go up to around 8-speed (288Mbps/36MBps) for applications that require such data-rates, and commercial 2x media already exist for 72Mbps and twin head 144Mbps (used in professional disc for data [PDD] and XDCAM products). DVD-RAM-type recording materials are available to be used at these higher speeds if required. Using a multi-channel optical head, it should be possible to read from and write to multiple layers at once - probably provided that the layers aren't written at the same position on the disc simultaneously - i.e., that there's a small spatial offset to allow cooling for each layer after each thermal write cycle.