Patent ID: 6252837
Filing Date: 2001-06-26
Classification: G11B

Abstract:
An error compensation device for a disk signal reproduction apparatus, comprising:a data read unit which reads out data from a disk on which the data is recorded along a spiral track;a signal memory unit which stores output data of said data read unit;a servo control unit which controls operations of focussing and tracking in said data read unit;a control microcomputer which controls said servo control unit and said signal memory unit;a storage unit for microcomputer control which controls said control microcomputer;a D/A conversion unit which converts data stored in said signal memory unit into an analog signal; anda signal mute unit which is connected to a signal transmission path in a preceding or subsequent stage of said D/A conversion unit and which is controlled by said microcomputer,wherein when there is an unreproducible region in which, during a process of reading out a signal from the disk, reading of data is disabled by a tracking failure due to a damage of the disk or contamination, said storage unit for microcomputer control stores the region as an error region, signal data stored in said signal memory unit is sequentially read out at a reference speed to reproduce a signal, and, if, during reproduction, it is detected from a read control signal from said storage unit for microcomputer control that reproduced output data is data read out from the error region, said signal mute unit mutes a transmission signal.