Optical disk drive
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United States of America Patent
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May 17, 2011
Grant Date -
Nov 20, 2008
app pub date -
Mar 11, 2008
filing date -
May 16, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical disk drive capable of reproducing data even when defects, such as flaws or stains, are present in the disk. A system controller of an optical disk drive reproduces data by setting the maximum speed in accordance with the type of an optical disk, an amount of side-to-side runout, and the like. When reproduction of data becomes impracticable for reasons of meandering of a track, or the like, in the middle of reproduction of data, the rotational speed is decreased, and a retry is performed. However, when reproduction of data becomes impracticable for reasons of flaws or stains, the rotational speed is reversely increased, and a retry is performed.
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