sonycowboy
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Mon Dec 27,12:02 AM ET
TOKYO Hoping to ease the transition from DVD to Blu-ray Disc, JVC has developed a Blu-ray/ DVD Combo ROM Disc, containing two DVD layers and one BD layer.
Earlier this month, Toshiba and Memory-Tech developed a dual-layer DVD/HD DVD disk able to store both DVD and HD DVD content. JVC expects the Blu-ray/DVD disc to likewise enable customers to view both standard and high-definition video content. The company intends to propose the disc to the Blu-ray Disc Association next spring, with production to begin when BD-ROM players emerge in early 2006.
"We expect that standard definition (SD) and high-definition (HD) video contents would coexist for a certain period," said a JVC spokesman. "Even when a BD player/recorder is installed in a living room, people will want to watch SD contents using DVD players/recorders in other rooms," he said.
The Blu-ray/ DVD combo ROM disc is a single sided disc with two DVD-ROM layers in the middle and one BD layer on top. These two platters are pasted together like a dual layer DVD disc, with a 0.1 mm cover layer on the BD layer side.
Disc capacity is 33.5 Gbytes, including 8.5 Gbytes for DVD content and 25 Gbytes for BD content.
JVC developed a proprietary reflective film for the outer BD layer that reflects blue light but passes red light. During BD reproduction, a blue laser reads the outer BD layer. When a red laser reads the inner DVD dual layers, the BD layer is transparent to the red laser.
The development of the film was a breakthrough for the combo disc, the JVC spokesman added.
"The disc is suitable for volume production, which is almost comparable to simple BD-ROM discs," said the spokesman, who declined to reveal details. The combo disc's cost is estimated to be 20 to 30 percent higher than regular BD-ROM discs.
JVC expects the combo disc to undergo further development to fully meet the performance needs of both DVD and BD formats. "We are developing a dual BD layer combo disc with 50 Gbytes of capacity for BD contents and 8.5 Gbytes for DVD contents," the spokesman said.
TOKYO Hoping to ease the transition from DVD to Blu-ray Disc, JVC has developed a Blu-ray/ DVD Combo ROM Disc, containing two DVD layers and one BD layer.
Earlier this month, Toshiba and Memory-Tech developed a dual-layer DVD/HD DVD disk able to store both DVD and HD DVD content. JVC expects the Blu-ray/DVD disc to likewise enable customers to view both standard and high-definition video content. The company intends to propose the disc to the Blu-ray Disc Association next spring, with production to begin when BD-ROM players emerge in early 2006.
"We expect that standard definition (SD) and high-definition (HD) video contents would coexist for a certain period," said a JVC spokesman. "Even when a BD player/recorder is installed in a living room, people will want to watch SD contents using DVD players/recorders in other rooms," he said.
The Blu-ray/ DVD combo ROM disc is a single sided disc with two DVD-ROM layers in the middle and one BD layer on top. These two platters are pasted together like a dual layer DVD disc, with a 0.1 mm cover layer on the BD layer side.
Disc capacity is 33.5 Gbytes, including 8.5 Gbytes for DVD content and 25 Gbytes for BD content.
JVC developed a proprietary reflective film for the outer BD layer that reflects blue light but passes red light. During BD reproduction, a blue laser reads the outer BD layer. When a red laser reads the inner DVD dual layers, the BD layer is transparent to the red laser.
The development of the film was a breakthrough for the combo disc, the JVC spokesman added.
"The disc is suitable for volume production, which is almost comparable to simple BD-ROM discs," said the spokesman, who declined to reveal details. The combo disc's cost is estimated to be 20 to 30 percent higher than regular BD-ROM discs.
JVC expects the combo disc to undergo further development to fully meet the performance needs of both DVD and BD formats. "We are developing a dual BD layer combo disc with 50 Gbytes of capacity for BD contents and 8.5 Gbytes for DVD contents," the spokesman said.