Apparatus for Detecting Frame Synchronization Signal in Compact Disc System and Method for Detecting Frame Synchronization Signal Using Same

摘要

Frame sync signal detection device of compact disc system that can detect normal frame sync signal not only when the slicing level of the RF signal is wrong and the EFM pattern is changed but also when the width of the EFM signal is over 22T due to the deformation of the RF signal itself. And methods. This is an edge width detector that detects an edge width of an EFM signal, an edge width counter that counts the edge width detected by the edge width detector, and outputs a predetermined pulse signal when the counted edge width falls within a range of 21T to 23T. Edge width detection means having a; and logical AND means for limiting the signal output from the edge width detection means to be output only within the frame window period.