Track error detection system with waveform comparison method for super-resolution optical read-only-memory disc

Track error (TE) detection system for readout of a high density super-resolution optical disc beyond Blu-ray Disc unaccompanied by its complication, based on a differential phase detection method is proposed. An evaluation of quality of TE signal with this system is described on a numerical simulation using experimentally acquired readout signal of the super-resolution optical disc.