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:
“Spend the years of learning squandering
Courage for the years of wandering”
—Samuel Beckett (1906–1989)
“Men and boys are learning all kinds of trades but how to make men of themselves. They learn to make houses; but they are not so well housed, they are not so contented in their houses, as the woodchucks in their holes.”
—Henry David Thoreau (1817–1862)
“They are the guiding oracles which man has found out for himself in that great business of ours, of learning how to be, to do, to do without, and to depart.”
—John Morley [1st Viscount Morley Of Blackburn] (1838–1923)