Patent ID: 7518968

Claim:
A method for controlling a recording and/or a reproducing of optical record medium in which plural non-record regions having different phase are arranged between recordable data regions for the distinction in the shape of the data region and a first track and a second track having different depths along light incident direction are alternatively arranged, the method comprising the steps of: detecting a non-record region; determining whether the non-record region exists within a same track or at a track shift region and outputting a control signal according to the determined result; and differently performing a servo operation in the non-record region according to whether the non-record region exists within the same track and at the track shift region, wherein the performing step performs the servo operation at the non-record region existing within the same track using a servo error signal that is low pass filtered and the servo operation at the non-record region existing at the track shift region by holding a fixed DC off-set voltage.