Track error detection system with dual phase difference for super-resolution optical ROM disc

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