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VCDHD (Versatile Compact Disc High Density) is an optical disc standard, similar to CD or DVD. The technology for VCDHD was invented by Andrei Tropillo,[1] Soviet and Russian record producer, music publisher, sound engineer, founder of the label AnTrop ("АнТроп"), and rock musician. Since the name of the technology is similar to the arbitrarily inferior VCD, it's also marketed using the name DVHD (Disc Versatile High Density).
The capacity of a VCDHD is 4.7 GB, the same as an average single-layer DVD. According to the official site, the tests at Philips laboratories have proven the discs to be fully compatible with modern DVD players. With use of blue laser technology steadily becoming available now, the capacity may be increased by up to 15 GB.
The format's main advantages include:
- a better resistance to scratching in comparison to DVDs
- a thickness of 0.6 mm (compared to 1.2 mm of a DVD)
- extreme elasticity and the resulting resistance to bending
- low manufacturing and production costs and time (approximately 2 seconds for a VCDHD, compared to a DVD which is approximately three times that amount)
- production defect levels are only about 1%
- the format does not require a DVD license to manufacture
- It works correctly on most DVD drives
Most popular in[citation needed]: Russia, Ukraine and Poland.
References
[edit]External links
[edit]- Blu-ray and HD-DVD Alternative; VCDHD DailyTech
- New optical disc joins the fray engadget
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction