| Term | Definition |
|---|
| access time | the amount of time in milliseconds that passes between the issue of the read command and when rthe first data bit is read from the CD |
| Advanced SCSI Programming Interface (ASPI) | an interface that allows CD devices to communicate with SCSI system components |
| AT Attachment Packet Interface (ATAPI) | the interface used for standard IBM PC AT and compatible systems for accessing CD devices |
| CD-ROM File System (CDFS) | another name used for ISO 9660 |
| colored books | the set of books that outline the specifications for optical disk systems |
| Compact Disk Read Only Memory (CD-ROM) | an optical disk that is able to store very large amounts of data |
| Compact Disk Rewritable (CD-RW) | an improvement over the CD-R technology, featuring special disks that can be erased and recorded |
| Compact Disk Recordable (CD-R) | an optical storage media that uses photosensistive reflective dye to simulate the pits and lands of a standard CD |
| constant angular velocity (CAV) | a method of reading data from a CD where the drive maintains the same RPM (revolutions per minute) regardless of the data location |
| constant linear velocity (CLV) | a method of reading data from a CD where the speed of the CD adjusts so that points on the inside and outside of the disk are read at a constant linear velocity |
| data transfer rate | a measurement of how much data can be transferred from a CD to RAM in a set period of time |
| Digital Versatile Disk (DVD) | until recently, the highest storage capacity of all laser-based CD storage types. also called digital video disk.Single layer disks can hold 4.7GB; dual layer disks can hold 8.5GB |
| High Sierra Format | a standard for compact disks that was created so that CDs could be read on any CD device |
| ISO 9660 | the file system standard that CD-ROMs use; an update to the High Sierra format |
| land | the flat areas between the pits in a compact disk |
| magneto-optical (MO) drive | disk drives that combine magnetic and optical principles to store and retrieve data |
| packet writing | records data in small blocks similar to the way hard drives store data |
| photocell | an electronic component that changes light energy into electrical energy |
| pit | the holes etched into a compact disk in order to store data |
| Universal Disk Format (UDF) | the file system standard accepted for CD-RW, magneto-optical disk, and DVD technology |
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