What Is the Treatment for a Compressed Disc?

Compressed disc, that is, a large amount of data is burned into the disc for backup or storage.

Compact disc

Compressed disc, that is, a large amount of data is burned into the disc for backup or storage.

Chinese name

Compact disc

manufacturer

SONY

Technology

New technology similar to Blu-ray

Storage capacity

Up to 23.3G

SONY announced that its first new optical disc using PDD technology has been sold. Thanks to a new technology similar to blue light, this light

The storage capacity of the disk can reach 23.3G.

SONY's PDD discs use shorter wavelengths of blue-violet lasers, and with high-performance lenses, this disc can provide four times the use of red lasers

The capacity of traditional discs or MO discs. SONY said that the technology is focused on business applications and can provide enterprise customers with top-level backup / storage solutions, especially for medical imaging, broadcast television, audio / video editing, graphic design and enterprise content management applications.

Although PDD discs use a blue laser similar to Blu-ray technology, the two disc formats are not the same and market positioning is also different. Compared with PDD, Blu-ray technology is a consumer-grade recording technology that can only be used in Japan at present. PDD and Blu-ray discs are not compatible with each other.

Compared with existing CD, DVD and MO technologies, PDD discs have a higher track density. The higher the track density, the greater the storage density per unit area of the optical disc. SONY said that in order to ensure the durability of the disc, the PDD disc has an anti-static case, which can effectively prevent the disc from being damaged or lost during the read / write process. SONY expects PDD discs to last more than 50 years and can be rewritten more than 10,000 times.

The second generation of PDD technology will appear in 2005. At that time, the capacity of PDD discs with single-sided double-layer design will reach 50GB and the transfer rate will be 18MB / s. It is expected that the third-generation PDD drive and PDD disc released in 2007 will reach a storage capacity of 100GB and a transfer rate of 36MB / s.

Both PDD discs and rewritable PDD discs currently cost around $ 45.