What Is the Optic Disc?

Blu-ray Disc (Blu-ray Disc, BD for short) refers to one of the next-generation optical disc formats after DVD, which is used to store high-quality video and audio and high-capacity data storage.

Blu-ray Disc

Blu-ray Disc (

* On February 19, 2002, "Blu-ray Disc Founders", the predecessor of "Blu-ray Disc Alliance"

compatibility

The Blu-ray Disc Alliance states that all authorized Blu-ray disc players can be mapped downwards, including DVD-ROM, VCD and CD, but some CDs cannot be played on some Blu-ray disc players.

Computer file storage

Blu-ray Disc use

electronic product

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Due to the great disagreement between the Blu-ray Disc Alliance and the DVD Forum, an international organization that makes DVD standards, the Blu-ray Disc format has not been submitted to the DVD Forum. In contrast, the HD-DVD jointly developed by Toshiba and NEC was recognized and officially named by the DVD Forum in November 2003. At the same time, HD-DVD was supported by Microsoft and Intel. As a result, the two major camps, Blu-ray Disc and HD-DVD, have formally competed on the format to become the next-generation standard disc format.

Can Blu-ray discs completely replace old DVD discs? Blu-ray producers are so expected. JVC recently produced a Blu-ray disc capable of storing 33.5G data for high-definition movie disc releases. However, there are several other products that have ambitious plans to replace traditional DVDs:

The biggest competitor is naturally HD-DVD, also called

Just look at the box. The DVD only prints "Blu ray" on the sleeve, and Blu-ray has a box, whether it is true or false.

True and false Blu-ray:

Look at the price: the real Blu-ray, the production line is in Hong Kong, the production cost of a plate is about 60 yuan, 38 yuan is definitely fake. There are also many confiscated Blu-ray movies below this price.

Look at the box: mainly look at the "Blue ray" logo. The fake silver is very rough.

Look at printing: Look at the front cover may not be very different. Look at the back cover. The fake color registration is very poor. There will be ghosting. The fake basic printing seen on the market is very poor.

Look at the base: Blu-ray disc data recording layer generally shows dark blue to blue-violet, DVD media is silver-white or gold.

Computer read: The capacity of the disc can be recognized under Windows VISTA system (Windows XP system only needs to install a tool that can recognize UDF 2.5 format), DVD below 8.6GB must be DVD, and the minimum capacity of Blu-ray is 25GB.

Since Netac invented the world's first flash disk in 1999, in the past 8 years, the flash disk has successfully replaced the floppy diskette and floppy disk drive, bringing mobile storage into a new realm, and increasingly presenting a diversity of "beyond storage" The characteristics of the application, and Netac recently predicted that "due to the storage mechanism of flash memory, the price of flash disks and the widespread application of Internet content, flash disks will replace Blu-ray DVDs in the near future". If the predictions come true, then the Blu-ray DVD just released is really out of date.
"According to the current growth rate of flash disk capacity, when Blu-ray DVD develops to be truly marketable, the capacity of flash disks will be increased to 128G." Netac said that at that time, audiovisual stores will sell high-definition content that can be copied Instead of DVD. Consumers can copy via USB flash drives, and video stores also like this sales model because it is almost zero inventory. "
Not long ago, Laurie Fincham, an expert at THX, a well-known audio company in the industry, also pointed out that consumers do not need Blu-ray DVDs at all. Therefore, blue light will perish in the near future. He also stated that in the future, consumers will prefer to store high-definition video content through flash memory and replace the current model of DVD players and discs. "

[Blu-ray DVD is out of season]

On February 19, 2008, Toshiba announced that it would no longer support the HD DVD format, and discontinued the production of HD DVD format players, which made Sony's Blu-ray DVD support the only HD DVD standard. Benefits also include patent holders of the standard, including Philips, Panasonic, and Warner.
Prior to this, Sony had once received 200 billion yen in patent fees each year due to the success of DVDs. However, the same good thing is unlikely to happen to Blu-ray DVDs.
In February 2008, analysts from authoritative research institutions Gartner and iSuppli pointed out that Blu-ray DVD's victory over HD DVD may only be a short-term victory, because Blu-ray is facing the severe challenge of Internet download. Apple CEO Steve Jobs also said earlier that the future of the high-definition content market is Internet downloads, not Blu-ray DVDs.
This seems to indicate that the ecological environment in which Blu-ray DVDs live is very different from the DVD era. Compared to the popularity of the first generation DVD, the fate of Blu-ray DVD is likely to be very tragic.
In fact, similar encounters have been staged once in Sony. After the success of Walkman Walkman, Sony introduced a new generation of Walkman MD. Although the latter's sound quality is better, almost no one cares. Soon after, Apple's iPod, which supports MP3 network music, was a big success.
"MD's failure is the cost of Sony's neglect of MP3 online music." Analysts at Shengdao Consulting believe that Sony's Walkman once changed the way people live, but this time it stood on the opposite side of the "new human" lifestyle. The same situation is likely to happen to Blu-ray DVDs. The reason is not that Blu-ray DVDs have problems themselves, but that they are out of date.

[Flash business opportunities highlighted]

Although the Blu-ray DVD is unlikely to achieve great development, as a technology standard favored by many giants, it will certainly activate the market demand for high-definition images. This opens up new business opportunities for other mobile storage vendors.
Netac, a well-known flash memory application manufacturer in the industry, foresaw the business opportunities early. In August 2006, Netac cooperated with the domestic TV giant Skyworth Group to establish the first domestic HD movie content service company-Kukai Network. Its main mobile solution for HD movies is flash drives.
Due to the current domestic network users' download speeds around 200Kb / s (up to 1000kb / s), downloading a high-definition movie with a volume of 8G over the network usually takes about ten hours. This is unacceptable to consumers both at home and in video stores. In the near future, in a long period of time when the network bandwidth of more than 100M has not been able to spread to millions of households in China, flash disks will be the best high-definition content carrying tools.
As another important storage company in the industry, Seagate also believes that the future of HD movie moving solutions will be mainly borne by mobile hard drives and large-capacity flash disks, Blu-ray DVD is unlikely to become the mainstream carrier. Similarly, Tetsuya Wadaki, an analyst at Nomura Securities in Japan, said: "If the manufacturing cost of flash memory continues to decrease, it may gradually replace MiniDisc, CD, and DVD media in the future." ^[2]