METHOD FOR TRACK COUNTING AND CORRESPONDING APPARATUS FOR READING FROM AND/OR WRITING TO AN OPTICAL RECORDING MEDIUM

In an apparatus for reading from and/or writing to an optical recording medium, it is desirable, in particular in the case of track jumps, to detect the direction of the track jump, i.e. the direction of movement of an objective lens of the apparatus relative to the optical recording medium in order to be able to carry out corresponding track regulation. For this purpose, and also for determining the number of tracks crossed by the scanning beams, it is proposed to determine the number of zero crossings and also the phase difference between at least two error signals derived from the reflected scanning beams.