Soichiro Eto

Recordable Multilayer Super-Resolution Optical Disc Realized Using Discrete-Track Three-Dimensional Pit Selection

We propose a recordable multilayer super-resolution method (discrete-track three-dimensional pit selection) to realize an optical disc with a sub-terabyte data capacity. The fundamental super-resolution characteristics of a discrete-track (DT) super-resolution disc were experimentally examined comparing to that of the conventional super-resolution disc. The experimental results show that the DT super-resolution disc exhibits high optical resolution equal to that of the conventional disc and an optical transmittance of 71%, sufficient for multilayer super-resolution. The results of the disc design indicated the possibility of a data capacity of 500 GB/disc.

Disc Design for Reduction of Random Data Bit Error Rate in Super-Resolution

The disc design, simulation and experimental results are presented to improve bit error rate in super-resolution readout by reducing normal-resolution signal which causes the noise in readout of random data.