HD NVD is a Chinese high definition standard created to compete with

Blu-ray Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. It was invented and developed in 2005 and released worldwide on June 20, 2006, capable of storing several hours of high-defin ...

discs. The standard uses a red laser like the one used in

DVD The DVD (common abbreviation for digital video disc or digital versatile disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any ki ...

and CD players whereas Blu-ray uses a blue laser. This standard allows the Chinese companies to avoid paying royalties to foreign companies for the manufacture of Blu-ray products.

References

* * Optical discs Consumer electronics Science and technology in China {{Asia-tv-stub