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Information about Professional Disc For Data

Professional Disk for DATA
Media type:Optical disc
Capacity:23 GB per layer
Developed by:Sony
Usage:Data storage


Professional Disc for DATA (PDD or ProDATA) is a recordable optical disc format which was introduced by Sony in 2003. It was one of the first two formats (along with Ultra Density Optical) to utilize blue-violet lasers for reading and writing, which allowed for much higher density data to be stored on optical media compared to the higher wavelength infrared laser technology used in the CD and red laser technology used in the DVD format.

Technology

PDD uses a 405 nm wavelength and a numerical aperture (NA) of 0.85 for the laser, allowing 23 GB of data to be stored on one 12 cm disc – the equivalent to nearly five single-layer DVDs, and a 1x speed data transfer rate of 88 Mbit/s for reading and 72 Mbit/s for writing. Plans were also made to introduce dual-layer 50 GB and quad-layer 100 GB discs in the future.

Confusingly, this sounds very similar to the Blu-ray Disc format, another optical disc format using blue-violet lasers which is also supported by Sony. Even the PDD's caddy and Blu-ray's prototype caddy (later it was dropped) looked very similar. The only apparent difference is that single-layer PDD discs have a capacity of 23 GB whereas Blu-rays can store 25 GB. However, Blu-ray Discs currently allows a 2x data transfer rate of 72 Mbit/s – lower than PDD. This is because PDD discs use much higher quality media and drives use higher quality components, making them prohibitively expensive for the average consumer segment to which Blu-ray Discs are aimed.

Applications/Products

PDD drives and media became available in mid-2004; the format was aimed primarily at small and medium-sized enterprise for data archival and backup. The BW-RS101 external SCSI-3 drive originally retailed in the UK at £2,344 (excl. VAT) directly from Sony, and 23 GB write-once and re-writeable media retailed for £30 each. Two other drives – the BW-F101/A internal SCSI drive and the BW-RU101 external USB 2.0 drive also became available around the same time.

The PDD format is also used as the primary recording medium for Sony's XDCAM professional video format, with the format using PDD discs for recording and playback of MPEG-2 or DV-encoded video data.

Manufacture Discontinued and End of Life Product Notifications

Effective March 31, 2007, "Professional Disc for DATA" products have reached end of life.{fact}}

See also

External links

optical disc is a flat, circular, usually polycarbonate disc where data is stored in the form of pits (or bumps) within a flat surface, usually along a single spiral groove that covers the entire recorded surface of the disc.
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gigabyte or Gbyte (derived from the SI prefix giga-) is a unit of information or computer storage meaning either 1000³ bytes or 1024³ bytes (1000³ = one billion). The usage of the word "gigabyte" is ambiguous, depending on the context.
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Sony Corporation
ソニー株式会?

Public (TYO: 6758 ; NYSE:  SNE )
Founded May 7 1946 (adopted current name in 1958) by Masaru Ibuka and Akio Morita[1]
Headquarters Minato-ku, Tokyo, Japan[1]
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optical disc is a flat, circular, usually polycarbonate disc where data is stored in the form of pits (or bumps) within a flat surface, usually along a single spiral groove that covers the entire recorded surface of the disc.
..... Click the link for more information.
Sony Corporation
ソニー株式会?

Public (TYO: 6758 ; NYSE:  SNE )
Founded May 7 1946 (adopted current name in 1958) by Masaru Ibuka and Akio Morita[1]
Headquarters Minato-ku, Tokyo, Japan[1]
..... Click the link for more information.
20th century - 21st century - 22nd century
1970s  1980s  1990s  - 2000s -  2010s  2020s  2030s
2000 2001 2002 - 2003 - 2004 2005 2006

2003 by topic:
News by month
Jan - Feb - Mar - Apr - May - Jun
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Ultra Density Optical (UDO) is an optical disc format designed for high-density storage of high-definition video and data.

Overview

An Ultra Density Optical disc or UDO is a 5.25" ISO cartridge optical disc which can store up to 60 GB of data.
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laser is a mechanical device that produces coherent radiation. The term "laser" is an acronym: Light Amplification by Stimulated Emission of Radiation.
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In physics, wavelength is the distance between repeating units of a propagating wave of a given frequency. It is commonly designated by the Greek letter lambda (λ). Examples of wave-like phenonomena are light, water waves, and sound waves.
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CD or C/D or Cd or cd may stand for:
  • Compact Disc
  • CD-ROM
  • Certificate of deposit (time deposit)
  • CD represents 400 in Roman numerals — meaning 100 (C) less than 500 (D).
In science and computers:
  • .

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DVD

Media type: Optical disc
Capacity: 4.7 GB (single layer), 8.5 GB (dual layer)
Usage: Data storage, audio, video, games

Optical disc authoring
  • Optical disc
  • Optical disc image
  • Recorder hardware
  • Authoring software

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NM may stand for:
  • National Master, a chess title
  • Nautical mile, a unit of length used for maritime and aviation purposes
  • Neal Morse, an American multi-instrumentalist
  • Network marketing, a business model that combines direct marketing with franchising

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numerical aperture (NA) of an optical system is a dimensionless number that characterizes the range of angles over which the system can accept or emit light. The exact definition of the term varies slightly between different areas of optics.
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GB may stand for:

In geography

  • Gabon (FIPS 10-4 and NATO (obsolete) country code: GB), a country in Central Africa
  • Gambia (ICAO airport designator prefix and WMO country code: GB), a country in West Africa

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megabit per second (abbreviated as Mbit/s, Mbps, or mbps) is a unit of data transfer rate equal to 1,000,000 bits per second. Because there are 8 bits in a byte, a transfer speed of 8 megabits per second (8 Mbps) is equivalent to 1,000,000 bytes
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Blu-ray Disc

Media type: High-density optical disc
Encoding: MPEG-2, MPEG-4 AVC (H.264), and VC-1
Capacity: 25 GB (single layer), 50 GB (dual layer)
Read mechanism: 1x@36 Mbit/s & 2x@72 Mbit/s
Developed by: Blu-ray Disc Association
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20th century - 21st century - 22nd century
1970s  1980s  1990s  - 2000s -  2010s  2020s  2030s
2001 2002 2003 - 2004 - 2005 2006 2007

2004 by topic:
News by month
Jan - Feb - Mar - Apr - May - Jun
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backup refers to making copies of data so that these additional copies may be used to restore the original after a data loss event. These additional copies are typically called "backups." Backups are useful primarily for two purposes.
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Motto
"Dieu et mon droit" [2]   (French)
"God and my right"
Anthem
"God Save the Queen" [3]
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Vat and VAT may refer to:
  • Value added tax
  • A type of container such as a barrel, storage tank, or tub, often constructed of welded sheet stainless (corrosion resistant) steel, and used for holding, storing, and processing liquids such as milk, wine, and beer

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SCSI (Small Computer System Interface) is a set of standards for physically connecting and transferring data between computers and peripheral devices. The SCSI standards define commands, protocols, and electrical and optical interfaces.
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XDCAM is an optical disk-based professional video system introduced by Sony in 2003. Its features include tapeless optical disk recording of DVCAM, MPEG IMX and, in the XDCAM HD variant, HDV video data, as well as MXF metadata and a low resolution AV proxy stream, on a disc
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MPEG-2 is a standard for "the generic coding of moving pictures and associated audio information".[1] It describes a combination of lossy video compression and lossy audio compression (audio data compression) methods which permit storage and transmission of movies using
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Digital Video (DV) is a digital video format launched in 1994, and, in its smaller tape form factor MiniDV, has since become a standard for home and semiprofessional video production; it is sometimes used for professional purposes as well, such as filmmaking and electronic
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Blu-ray Disc

Media type: High-density optical disc
Encoding: MPEG-2, MPEG-4 AVC (H.264), and VC-1
Capacity: 25 GB (single layer), 50 GB (dual layer)
Read mechanism: 1x@36 Mbit/s & 2x@72 Mbit/s
Developed by: Blu-ray Disc Association
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HD DVD

Media type: High-density optical disc
Encoding: VC-1, H.264, and MPEG-2
Capacity: 15 GB (single layer) 30 GB (dual layer)
Read mechanism: 1x@36 Mbit/s & 2x@72 Mbit/s
Developed by: DVD Forum
..... Click the link for more information.
Ultra Density Optical (UDO) is an optical disc format designed for high-density storage of high-definition video and data.

Overview

An Ultra Density Optical disc or UDO is a 5.25" ISO cartridge optical disc which can store up to 60 GB of data.
..... Click the link for more information.
optical disc is a flat, circular, usually polycarbonate disc where data is stored in the form of pits (or bumps) within a flat surface, usually along a single spiral groove that covers the entire recorded surface of the disc.
..... Click the link for more information.


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