首页>
外国专利>
Media defective measure functional attaching control circuit
Media defective measure functional attaching control circuit
展开▼
机译：介质不良对策功能附加控制电路
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE: To stably control a head for a signal in the case of detecting a medium defect passage part in a position positioning the head for signal of a recording and reproducing device using a rotating medium. ;CONSTITUTION: When a medium defect is detected by a medium defect detecting means 9 under storing/reproducing operation, instead of an inaccurate positional deviation signal detected by a positional deviation signal detecting means 1, the sum signal of an estimated positioned deviation signal generated by a positional deviation signal estimating means 8 with the corrective quantity of the estimated positional deviation signal decided from the positional deviation signal after passing through the medium defect in a corrective quantity deciding means 11 is used as the input signal of a controlling filter 12. Thus, the speed error and the positional error of the head for the signal after passing through the medium defect is reduced. Further, by correcting the corrective quantity at every passing through the medium defect and learning repeatedly to the same kind of the medium defect, the estimation accuracy of the positional deviation is improved.;COPYRIGHT: (C)1993,JPO&Japio
展开▼
