The new generation of Blu-ray DVD technology uses a brand-new blue laser band to work, and its storage capacity is nearly 6 times that of the original DVD, which has made a great breakthrough in optical storage capacity.
At the beginning of 2002, the main members of DVD forum could no longer stand the confusion and controversy caused by the dispute over erasable DVD standards. After a week of intense discussion, nine members of the DVD Forum Steering Committee finally announced their support for the adoption of blue laser DVD storage technology to formulate a new high-density DVD standard-Blu-ray Disc (BRD), which is now called Blu-ray, to replace various DVD standards that currently adopt red laser storage technology.
Because most people think that the cost of switching from red light technology to blue light technology is too high, the proposal was not unanimously adopted by the whole DVD forum at first.
This has laid the groundwork for the future struggle between the two DVD standards.
Although the technical standard of Blu-ray was not finally adopted by the DVD forum and was further resisted by the improved red light technical standard, the initiators of Blu-ray are all members of the steering committee of the DVD forum, and most of them are world-renowned manufacturers, namely Sony, Hitachi, LG, Panasonic, Pioneer, Philips, Samsung, Sharp and Thomson Multimedia.
The initiative of these nine core members means that Blu-ray storage technology will officially enter the historical stage with the legal status given by the government.
In fact, the storage technology of replacing red laser with blue laser band was not developed by the main members of DVD forum, but was patented by Nichia and Toyoda Gosai in Japan.
According to IDG, the two companies have been arguing and litigating for six years in order to compete for the patent of blue light storage technology, which has delayed the development and application of this technology.
However, in mid-August, 2002, the controversy finally settled, and the two manufacturers began to provide technical licenses to other manufacturers through negotiation and cooperation, thus clearing a major obstacle to the development of Blu-ray DVD technology and making manufacturers who had long planned to develop Blu-ray DVD storage systems smile.
The launch of Blu-ray DVD is not only expected to end the dispute over erasable DVD standards, but its stronger market impetus is the launch of high-definition digital television (HDTV) services worldwide (for example, the United States took the lead in opening the cable network of HDTV in 2003, and China also established a plan to gradually replace the traditional TV network in a few years).
Because the data transmission rate of HDTV is at least 23Mbps, if you want to record a 133-minute HDTV program, the available space of the CD is bound to exceed 20GB, and the capacity of the traditional DVD cannot meet the requirements.