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Optical Disc Drive - Group 10

Report in CWS 231

sergio galvez

on 9 April 2013

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Transcript of Optical Disc Drive - Group 10

1. 1958 2. 1972 8. 1997 Optical Disk Drive Report by :
Galvez, Sergio
Lauron, Lisa
Villanueva, Marco Evolution of Optical Drive and Discs Disk – refers to magnetic media
Disc – refers to optical media
Optical Disc Drive – is what reads
and writes data onto an
optical disc. TERMS 1 2 3 Definition An optical disc drive is a drive that retrieve or store data on optical discs. It holds more information than classic portable media which is a floppy disk drive. The type of optical drive depends on the type of optical disc it can accommodate. The optical drive has 3 different ones such as CD, DVD, and Blu-Ray player. What is an optical disc drive? The first optical drive was created in 1958 when an inventor named David Paul Gregg who first got an idea and called it "VIDEODISK" as an optical disc drive. It was used as a 12-inch optical disc. 1958 - 1969 A.K.A. Optical Disc How CD's Work LaserDisc released Not capable of recording anything
VHS still had more popularity Capacities:
60 minutes per side on CLV discs
30 minutes per side on CAV discs 1985 Magneto-optical Disc Mainly used in Japan
Fallen disuse in other countries
Appear as hard disks to OS
Capacities vary by far 3. 1988 CD-R Released 4. Early 1990s Video Compact Disc (VCD) Enjoyed brief period of success
Super Video Compact Discs (SVCD) were the successor of VCD's but it didn't gain any popularity
Mostly used in Developing nations nowadays Capacity: 800mb Video and Audio 5. 1992 MiniDisc Only popular in Japan Capacity: 74-80 minutes of Audio 6. 1995 Digital Versatile Disc (DVD) Has High capacity
Standard disc format
DVD ROM, DVD R, DVD RW released Capacities:
4.7 GB (single-sided, single-layer – common)
8.5–8.7 GB (single-sided, double-layer)
9.4 GB (double-sided, single-layer)
17.08 GB (double-sided, double-layer – rare) DVD-R Released 1997 CD-RW Released 7. 9. Super Audio CD Released (SACD) 1999 7.95 GB 10. DVD-RW Released 1999 11. Blu-ray Disc (BD) BD R and RE are in market
Full HD 1080 p/i
Blu-ray Disc drive can play DVD
HD DVD was abandoned after a while 2006 capacity:
25gb single layer
50gb dual layer 12. It is currently, the theoretical optical disc, Protein-coated disc (PCD) is being developed as an upgrade to the Holographic Versatile Disc (HVD). The HVD finished developing during mid-2008, and has a capacity of several terabytes, yet has the same size as a DVD/Blu-ray. The Future How CD's Work A disk refers to magnetic media, such as a floppy disk, the disk in your computer's hard drive, an external hard drive. Disks are always rewritable unless intentionally locked or write-protected. You can easily partition a disk into several smaller volumes, too.
Disks are usually sealed inside a metal or plastic casing (often, a disk and its enclosing mechanism are collectively known as a "hard drive"). A disc refers to optical media, such as an audio CD, CD-ROM, DVD-ROM, DVD-RAM, or DVD-Video disc. Some discs are read-only (ROM), others allow you to burn content (write files) to the disc once (such as a CD-R or DVD-R, unless you do a multisession burn), and some can be erased and rewritten over many times (such as CD-RW, DVD-RW, and DVD-RAM discs).
All discs are removable, meaning when you unmount or eject the disc from your desktop or Finder, it physically comes out of your computer. The Optical Disc Drive is Also Known As:
optical drive, ODD (abbreviation), CD drive, DVD drive, BD drive, disc drive
Important Optical Disc Drive Facts:
Most optical drives can play and/or record onto a large number of different disc formats.
Popular optical drive formats include CD-ROM, CD-R, CD-RW, DVD, DVD-RAM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-R DL, DVD+R DL, BD-R, and BD-RE. Popular Optical Disc Drive Manufacturers:
1. Lite-On
2. IT Memorex
3. NEC CD Player Components
The CD player has the job of finding and reading the data stored as bumps on the CD. Considering how small the bumps are, the CD player is an exceptionally precise piece of equipment. The drive consists of three fundamental components:
A drive motor spins the disc. This drive motor is precisely controlled to rotate between 200 and 500 rpm depending on which track is being read.
A laser and a lens system focus in on and read the bumps.
A tracking mechanism moves the laser assembly so that the laser's beam can follow the spiral track. The tracking system has to be able to move the laser at micron resolutions. Parts of ODD
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