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Constant angular acceleration (CAA) is a variant of CLV that is used on the LaserDisc format. The initial specification of CLV (as it applies to laserDisc) results in several playback artifacts to be present in the audio/video portion as well as compatibility problems with LaserDisc players as produced by different manufacturers.
For example, a 140-minute movie could fit on two CLV sides and one CAV side, thus allowing for the CAV-only features during the climax of the film). CAA In the early 1980s, due to problems with crosstalk distortion on CLV extended play LaserDiscs, Pioneer Video introduced constant angular acceleration (CAA) formatting for extended play discs.
In contrast, in CLV mode, the spindle motor speed varies so that the medium passes by the head at the same speed regardless of where on the disk the head is positioned. If the disk is recorded at the same areal density throughout, then when read or written in CAV mode, the data rate is higher for the outer tracks than for the inner tracks ...
This system, the Pioneer LaserActive, was a cross-platform video game console, Laserdisc player, and CD player. LD-ROMs owe their greater capacity to a design for constant linear velocity (CLV) playback. Like magnetic tape, the playback speed corresponds with picture quality and audio definition of analog audio-video streams. Since Pioneer ...
Other factors that affect data storage density include: the existence of multiple layers of data on the disc, the method of rotation (Constant linear velocity (CLV), Constant angular velocity (CAV), or zoned-CAV), the composition of lands and pits, and how much margin is unused is at the center and the edge of the disc. Types of Optical Discs:
This feature allows for observing the writing speeds and patterns (e.g. constant angular velocity, constant linear velocity and P-CAV and Z-CLV variants) with different writing speed settings and testing the highest capacity of an individual disc that would be achievable using overburning. [8]
Youth Services International confronted a potentially expensive situation. It was early 2004, only three months into the private prison company’s $9.5 million contract to run Thompson Academy, a juvenile prison in Florida, and already the facility had become a scene of documented violence and neglect.
The Z-CLV recording pattern is easily visible after burning a DVD-R. The first laser disc, demonstrated in 1972, was the Laservision 12-inch video disc . The video signal was stored as an analog format like a video cassette.