An apparatus for recording and/or reproducing information in and/or from an optically inscribable and readable disk-shaped record carrier with a pre-formed tracks with a track modulation constituted by a radial wobble, in order to obtain a tracking signal. A reference signal for deriving
An apparatus for recording and/or reproducing information on an optically inscribable and readable disc-shaped record carrier with a previously formed track pattern containing a first track modulation, in order to obtain a clock signal, and a second track modulation formed by a radial
