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- Constant_angular_velocity abstract "In optical storage, constant angular velocity (CAV) is a qualifier for the rated speed of an optical disc drive, and may also be applied to the writing speed of recordable discs. A drive or disc operating in CAV mode maintains a constant angular velocity, contrasted with a constant linear velocity (CLV).Like all spinning-disk media, the CD-ROM drive includes a spindle motor that turns the media containing the data to be read. The spindle motor of a standard CD-ROM is very different from that of a hard disk or floppy drive in one very important way:[citation needed] it does not spin at a constant speed. Rather, the speed of the drive varies depending on what part of the disk (inside vs. outside) is being read. In other words, The data-rate on an LP decreases as the stylus moves towards the center. This is due to less information passing per revolution from the longer run length as opposed to the middle where it moves over less vinyl. The amount of information stored in the vinyl is directly proportional to the linear length of a track. More track length passes underneath the stylus per unit time on the outside of the disc, than near the centre of the disc. Thus, data-rate decreases.Standard hard disks and floppy disks spin the disk at a constant speed. Regardless of where the heads are, the same speed is used to turn the media. This is called constant angular velocity (CAV) because it takes the same amount of time for a turn of the 360 degrees of the disk at all times. Since the tracks on the inside of the disk are much smaller than those on the outside of the disk, this constant speed means that when the heads are on the outside of the disk they will traverse a much longer linear path than they do when on the inside. Hence, the linear velocity is not constant, though some would think that the "constant angular velocity" principle applied on all disk-shaped media.".
- Constant_angular_velocity thumbnail Comparison_disk_storage.svg?width=300.
- Constant_angular_velocity wikiPageExternalLink tracksZBR-c.html.
- Constant_angular_velocity wikiPageID "1238797".
- Constant_angular_velocity wikiPageRevisionID "602026821".
- Constant_angular_velocity hasPhotoCollection Constant_angular_velocity.
- Constant_angular_velocity subject Category:Audio_storage.
- Constant_angular_velocity subject Category:Optical_computer_storage.
- Constant_angular_velocity subject Category:Rotating_disc_computer_storage_media.
- Constant_angular_velocity subject Category:Video_storage.
- Constant_angular_velocity type Artifact100021939.
- Constant_angular_velocity type Instrumentality103575240.
- Constant_angular_velocity type Medium106254669.
- Constant_angular_velocity type Object100002684.
- Constant_angular_velocity type PhysicalEntity100001930.
- Constant_angular_velocity type RotatingDiscComputerStorageMedia.
- Constant_angular_velocity type StorageMedium106263762.
- Constant_angular_velocity type Whole100003553.
- Constant_angular_velocity comment "In optical storage, constant angular velocity (CAV) is a qualifier for the rated speed of an optical disc drive, and may also be applied to the writing speed of recordable discs. A drive or disc operating in CAV mode maintains a constant angular velocity, contrasted with a constant linear velocity (CLV).Like all spinning-disk media, the CD-ROM drive includes a spindle motor that turns the media containing the data to be read.".
- Constant_angular_velocity label "CAV".
- Constant_angular_velocity label "Constant angular velocity".
- Constant_angular_velocity sameAs CAV.
- Constant_angular_velocity sameAs m.04l61n.
- Constant_angular_velocity sameAs Q5163644.
- Constant_angular_velocity sameAs Q5163644.
- Constant_angular_velocity sameAs Constant_angular_velocity.
- Constant_angular_velocity wasDerivedFrom Constant_angular_velocity?oldid=602026821.
- Constant_angular_velocity depiction Comparison_disk_storage.svg.
- Constant_angular_velocity isPrimaryTopicOf Constant_angular_velocity.
