Patent ID: 6108284
Filing Date: 2000-08-22
Classification: G11B

Abstract:
A track traverse signal detecting apparatus comprising:a pickup for reading data recorded on an optical medium and outputting a radio frequency signal;a radio frequency signal processing unit for receiving said radio frequency signal from said pickup, amplifying said radio frequency signal and detecting a RF envelope signal from the amplified radio frequency signal;a tracking error signal generating unit for generating a track error signal;a first track traverse signal generating unit for generating a first track traverse signal based on said tracking error signal;a second track traverse signal generating unit for generating a second track traverse signal based on a range which the RF envelope signal varies and a reference level;a control unit for monitoring said second track traverse signal using said first track traverse signal and outputting a control signal; anda reference level generating unit for generating the reference level, used in generating the second track traverse signal, based on said control signal.