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:
““Miss C_____’s father,” says Betty, “had much better have bred his daughter a housewife, and then, mayhap, she might have got her a husband, which with all her fine learning she has not yet been able to do. And no wonder, for what man would be plagued with a slattern?””
—Sarah Fielding (1710–1768)
“If you should put a knife into a French girl’s learning it would explode and blow away like an omelette soufflee ...”
—M. E. W. Sherwood (1826–1903)
“...I didn’t consider intellectuals intelligent, I never liked them or their thoughts about life. I defined them as people who care nothing for argument, who are interested only in information; or as people who have a preference for learning things rather than experiencing them. They have opinions but no point of view.... Their talk is the gloomiest type of human discourse I know.... This is a red flag to my nature. Intellectuals, to me have no natures ...”
—Margaret Anderson (1886–1973)