The large capacity optical disk video recorder standard ' Blu-ray Disc which uses the royal purple laser ' decision
- In rewriting possible phase change type optical disk of the same diameter 12cm as CD and DVD digital high vision image of 2 hours or more record -

 

	corporation Hitachi Manufacturing Works
	LG electronic corporation
	Matsushita Electric Industrial Co., Ltd. corporation
	Pioneer corporation
	Royal Philips electronics
	サムスン electronic corporation
	Sharp corporation
	The SONY corporation
	Thomson multiple media

Corporation Hitachi Manufacturing Works, the LG electronic corporation, the Matsushita Electric Industrial Co., Ltd. corporation and the pioneer corporation, royal Philips electronics, as for the サムスン electronic corporation, the sharp corporation, the SONY corporation and 9 corporations of the Thomson multiple media, wave length 405 nano- meters (the nm) making use of the royal purple laser, 12 centimeters in same diameter as the CD and the DVD (cm) in phase change type optical disk single sided 1 layer the maximum of 27 gigabytes (the GB) the image data, play back the next generation large capacity optical disk video recorder standard ' Blu-ray Disc which over again & can recording ' specification was decided. In the future, as you propose to the industry which is related this specification positively, with the goal of around the spring of 2002 it is the schedule which starts the license.

' The Blu-ray Disc ' with, as the royal purple laser of wave length is used shortly, beam spot is converted minutely the laser numerical aperture of the object glass which condenses (the NA) by making 0.85. In addition, by the fact that the disk structure which is 0.1 millimeters in optical transmitted protective thickness which corresponds to the high opening conversion of the lens is adopted, it decreases the aberration due to the inclination of the disk, grasps and assures the decrease of error and the improvement of recording density. Because of this, recording track pitch of the disk was refined approximately half 0.32 microns of DVD (mu m), high density record of the largest 27GB was actualized in the disk one side.
In record of image, affinity of the digital broadcast to which future development is expected becomes high, at the same time, the MPEG2 transport stream of international standard system is used, digital high vision broadcast is recorded while it is high picture quality, or, with image what records the other data which is received simultaneously possible.
In addition, the unique ID is written beforehand in the disk, can actualize the high-level copyright protective function which uses this easily.

It is the standard which becomes the basis which ' the Blu-ray Disc ', can retain image with high quality view with simple operation in the contents circulation society which is diversified with digitalization and broadband conversion.
9 corporations, as it tackles merchandising the video recorder which utilizes the merit, respective large capacity and high transfer rate, above the single sided 1 layer 30GB, aim toward large increasing capacity of the single sided 2 layer 50GB. In addition, pursuing, the possibility of application to various applications such as data storage and high vision image software for the computer, it is defeated.



- Main merit

1. Large capacity record of largest 27GB

It is possible to record the image data of the largest 27GB to the one side of the rewriting possible phase change optical disk of the diameter 12cm the royal purple laser and numerical aperture of the wave length 405nm (the NA) in addition to 0.85 object glasses, by adopting the disk structure which is 0.1 millimeters in optical transmitted protective thickness. If it is digital high vision image, when while it is high picture quality it is possible, videotapes standard television broadcast 2 hour or more to record, it is possible 13 hours or more to record.

2. High-speed data transfer of 36mbps

It is possible to record the image of high picture quality of the digital high vision broadcast and the digital video camera of high definition, with high quality. In addition, utilizing the random access function which is merit of the optical disk, while videotaping compilation and the television broadcast which connect the image which photographed with the video camera easily it is possible to play back record image.

3. Handling is easy the cartridge structure whose

The scratch in regard to use of optical disk record re-new aspect and the cartridge which prevents the soiling are adopted, handling is easy.

- Main specification