Learning
Many DVD-writers have a learning feature (branded with names like "smart-burn") that allows the drive to collect empirical data from its actual usage. The drive stores data from previous burns in its EEPROM, allowing it to adapt the default write strategies to account for individual drive variations, such as calibration, which may be affected by environment and age.
A newer feature contained in some DVD writers allows a drive to invent write strategies for unknown media types, ostensibly reducing its dependence on firmware to provide explicit compatibility. However, because the drive initially knows nothing of the media type, early burns are frequently of poor quality, and the media's optimal strategy may never be found. Thus, in practice, this form of learning is generally a last resort, and firmware support is preferable. An attempt to address this weakness is online learning, which allows the drives to share learned data. Branded technologies that incorporate this form of learning have been given names like "solid burn" and "hypertuning".
In either case, if the history data is reset, or if the data is skewed by a series of irregular burns, the speed and/or quality of a typical burn may not be optimal until the history is repopulated with proper result data again.
Read more about this topic: Write Strategy
Famous quotes containing the word learning:
“Without our being especially conscious of the transition, the word “parent” has gradually come to be used as much as a verb as a noun. Whereas we formerly thought mainly about “being a parent,” we now find ourselves talking about learning how “to parent.” . . . It suggests that we may now be concentrating on action rather than status, on what we do rather than what or who we are.”
—Bettye M. Caldwell (20th century)
“This great purple butterfly,
In the prison of my hands,
Has a learning in his eye
Not a poor fool understands.
Once he lived a schoolmaster
With a stark, denying look....”
—William Butler Yeats (1865–1939)
“Laughing at someone else is an excellent way of learning how to laugh at oneself; and questioning what seem to be the absurd beliefs of another group is a good way of recognizing the potential absurdity of many of one’s own cherished beliefs.”
—Gore Vidal (b. 1925)