| 摘要 |
A disk reproducing device in which an error rate comparison and parameter determination block newly determines a parameter to minimize the error rate and a parameter setting block newly resets the determined parameter to a read block in accordance with the determination of readjustment determination block, when the data of use environmental information from a pickup, environmental change detection block, and vibration detection block is data showing a predetermined change and an error rate from error rate measurement block becomes worse than a minimum error rate stored in error rate storage block by a predetermined amount or more.
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