REAL-TIME OPTICAL DISC AND METHOD FOR RECORD AND READOUT.

摘要

Optical disc structure physically optimized for real-time recording and playback of high-density information and methods and apparatus pertaining to such disc structure. One disclosed disc embodiment is designed for heat-deformation recording and reflective read-out and, in regard to the chosen reading wave-length, is optimized in recording stratum thickness and optical constants for high sensitivity writing and high contrast, phase interference reading. Another disclosed disc embodiment is further optimized in thickness and optical constants with respect to a chosen writing wavelength to further enhance writing sensitivity and reduce requisite writing power.