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Appeared on: Wednesday, August 11, 2004
JVC Develops Low Cost Blu-Ray Mastering System

JVC developed a proprietary "Extended Deep Ultraviolet Mastering System" that manufactures read-only Blu-ray master discs known as BD-ROM for the same cost as DVD master discs.

BD-ROM and Blu-ray discs store over 2 hours of high-definition video.

JVC's new system records this master optical disc. It shines a laser beam corresponding to the formatted content signal on a spinning glass disc coated with photoresist made of photosensitive polymer resin. This optically activates the photoresist to create a small pit or depression that stores the signal.

In the DVD mass replication process, the glass master is what stampers are in turn made from. The final stamped disc is what is standard in any retail DVD software or music product.

Until now, manufacturing high-capacity BD-ROM glass masters required an expensive electron beam system with a beam finer than a laser beam, as well as special optics and photoresist material created in a vacuum. The manufacturing cost of BD-ROM master discs was therefore significantly higher than DVD master discs.

JVC's newly developed Extended Deep Ultraviolet Mastering System uses a deep ultraviolet laser beam to manufacture BD-ROM masters with just a small modification to a conventional DVD master recording system which uses blue violet to ultraviolet rays. For this reason it produces BD-ROM master discs for the same cost as DVD master discs.

JVC anticipates the spread of BD-ROM mass production systems using this system.

[Extended DUV Mastering System]

(1) The system is based on a conventional DVD master recording system, but uses a deep ultraviolet laser with a shorter wavelength than lasers used for DVDs. JVC improved the precision of the moving unit that holds the laser beam housing to enable highly accurate signal recording on the optical disc master.

(2) The system is based on a conventional DVD master recording system, but uses a deep ultraviolet laser with a shorter wavelength than lasers used for DVDs. JVC improved the precision of the moving unit that holds the laser beam housing to enable highly accurate signal recording on the optical disc master.

(3) The system is based on a conventional DVD master recording system, but uses a deep ultraviolet laser with a shorter wavelength than lasers used for DVDs. JVC improved the precision of the moving unit that holds the laser beam housing to enable highly accurate signal recording on the optical disc master.

(4) The system is based on a conventional DVD master recording system, but uses a deep ultraviolet laser with a shorter wavelength than lasers used for DVDs. JVC improved the precision of the moving unit that holds the laser beam housing to enable highly accurate signal recording on the optical disc master.

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