Interesting Facts

1
Interesting Facts

• By Jeremy Boecker

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Post-DVD Technology

• Blu-Ray Discs (BD)
• HD-DVD
• HVD

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Comparing Blu-Ray HD-DVD

• Both use Blue Laser technology (?405nm)
• Both have the same physical dimensions of a CD /
  DVD
• Quad-Layer technology - 200GB/disc!

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HVD

• Holographic technology
• Can store 1TB to 3.9TB of data per disc!
• 1 Gbit/sec transfer rate

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The Super Audio CD (SA-CD)

• Uses DVD storage technology
• Music sampled at 64x more samples/sec than
  regular PCM sampling

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Why the rainbow colors on CDs?

• Constructive / destructive interference of the
  white light

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DTS vs. Dolby Digital

• DD uses many sophisticated data compression
  algorithms
• DTS does not
• Typical DD Data Rate 448kbps
• Typical DTS Data Rate 754kbps
• Dolby Digital is better

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Random Cool Facts

• CDs are dishwasher safe
• Dual-layer skip

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References

• http//electronics.howstuffworks.com/dvd-comp3.htm
  
• http//news.softpedia.com/news/The-chronicles-of-a
  -futile-battle-Blu-Ray-vs-HD-DVD-631.shtml
• http//www.optware.co.jp/english/index_tech.htm