CD Media

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CD Media

• Edward Viau Eric Pheterson

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Overview

• 12cm wide, 1.22mm thick circular disk
• Originally designed for Audio
• Used to transport and save data or audio

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How CDs Work

• Lasers burn microscopic pits into disk
• Pits 1, Non-Pits 0
• Lasers convert the burned pits into binary bits

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Types

• CD
• DVD
• Blu-Ray

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Types\CD

• Full Name Compact Disk
• Capacity 700mb
• Primary Use Audio or Data Storage

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Types\DVD

• Full Name Digital Versatile Disk
• Capacity 4.7 GB
• Primary Use Data or Video storage

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Types\Blu-Ray

• Full Name Blu-Ray
• Capacity 27 GB
• Primary Use HD-Video or Data storage

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Comparison
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Formats

• Audio
• CD-DA (Compact Disk-Digital Audio)
• Data
• UDF (Universal Disk Format)
• ISO-9660 a.k.a. High Sierra
• Video/Audio
• CD-I (Compact Disk-Interactive)
• Photos
• Photo-CD

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MPC(Multimedia Personal Computer)

• Set of minimum requirements for multimedia
  systems
• 8 MB RAM
• 540 MB Hard Drive
• 75 MHz Processor
• 4X CD-ROM
• MPEG Support
• Obsolete, no more meaning in PC World.

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Speeds
Access Speeds (Measured in MBps)