Patent ID: 6188655
Filing Date: 2001-02-13
Classification: G11B

Abstract:
An information recording apparatus for recording record information onto a record medium, onto which a moving control information to control a moving speed of said record medium when recording the record information onto said record medium is recorded by wobbling an information track, where the record information is to be recorded on said record medium, at a frequency corresponding to the moving control information, said information recording apparatus comprising:pickup device for emitting a light beam onto said information track and then outputting a reproduction signal based on a reflection light from said information track of the emitted light beam;an information extracting device or extracting the moving control information from the outputted reproduction signal;a moving control device for controlling the moving speed of said record medium on the basis of the extracted moving control information; anda recording device for recording the record information onto said record medium while said record medium is moved at the controlled moving speed,wherein said information extracting device comprises:a generating device for generating a limit signal, which has a limit level to remove a noise out of the outputted reproduction signal;a limiting device for limiting a level of the outputted reproduction signal on the basis of the generated limit signal to thereby output a limit reproduction signal; andan extracting device for extracting the moving control information out of the outputted limit reproduction signal.