RELIABLY DETECTING TRACK CROSSINGS AND CONTROLS ASSOCIATED THEREWITH FOR TRACK SEEKING IN OPTIC DISK RECORDERS
摘要
A track-seeking apparatus of a disk recorder employs a track-crossing sensor to produce track-crossing signals. An oscillator is slaved to the sensor for supplying substitute track-crossing pulses in the absence of the sensor providing such pulses or when the radial velocity exceeds a threshold velocity. A velocity profile means alters the oscillator frequency so that the oscillator produces track-crossing pulses in accordance with the profile. TU988001
申请公布号
CA2012800(C)
申请公布日期
1995.01.17
申请号
CA19902012800
申请日期
1990.03.22
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
CHOW, WILLIAM W.;FENNEMA, ALAN A.;FIORINO, BENJAMIN C.;HENDERSON, IAN E.;KADLEC, RONALD J.;ROBERTS, SPENCER D.