Holographic Versatile Disc - Technology

Technology

Optical discs
General
  • Optical disc
  • Optical disc drive
  • Optical disc authoring
  • Authoring software
  • Recording technologies
    • Recording modes
    • Packet writing
Optical media types
  • Compact Disc (CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD (SACD), Photo CD, CD Video (CDV), Video CD (VCD), Super Video CD (SVCD), CD+G, CD-Text, CD-ROM XA, CD-i
  • DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, HVD, EcoDisc
  • Blu-ray Disc (BD): BD-R & BD-RE
  • Universal Media Disc (UMD)
  • Enhanced Versatile Disc (EVD)
  • Forward Versatile Disc (FVD)
  • Holographic Versatile Disc (HVD)
  • China Blue High-definition Disc (CBHD)
  • HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM
  • High definition Versatile Multilayer Disc (HD VMD)
  • VCDHD
  • GD-ROM
  • MiniDisc: MD, Hi-MD
  • Laserdisc: LD, LD-ROM
  • Video Single Disc (VSD)
  • Ultra Density Optical (UDO)
  • Stacked Volumetric Optical Disk (SVOD)
  • Five dimensional disc (5D DVD)
  • Nintendo optical disc (NOD)
Standards
  • SFF ATAPI/MMC
    • Mount Rainier (packet writing)
    • Mount Fuji (layer jump recording)
  • Rainbow Books
  • File systems
    • ISO 9660
      • Joliet
      • Romeo
      • Rock Ridge / SUSP
      • El Torito
      • Apple ISO 9660 Extensions
    • Universal Disk Format (UDF)
    • ISO 13490
See also
  • History of optical storage media
  • High definition optical disc format war

Current optical storage saves one bit per pulse, and the HVD alliance hopes to improve this efficiency with capabilities of around 60,000 bits per pulse in an inverted, truncated cone shape that has a 200 μm diameter at the bottom and a 500 μm diameter at the top. High densities are possible by moving these closer on the tracks: 100 GB at 18 μm separation, 200 GB at 13 μm, 500 GB at 8 μm, and most demonstrated of 5 TB for 3 μm on a 10 cm disc.

The system uses a green laser, with an output power of 1 watt which is high power for a consumer device laser. Possible solutions include improving the sensitivity of the polymer used, or developing and commoditizing a laser capable of higher power output while being suitable for a consumer unit.

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