Multi-layers optical recording media and system for recording and reproducing information data

DETAILED DESCRIPTION Accordingly, a primary object of the present invention is to provide a novel optical information storage media which overcomes the shortcomings and drawbacks of prior art apparatus and methodologies.
Another object of the present invention is to provide novel information storage media which exploits both the wavelength-dependent and polarization-dependent reflective properties of particular optical materials.
Another object of the present invention is to provide a novel optical information storage structure which exploits both the wavelength-dependent and polarization-dependent reflective properties of CLC material.
Another object of the present invention is to provide a novel optical information storage structure comprising a pair of information storage layers, each of which exploit both the wavelength-dependent and polarization-dependent reflective properties of CLC material or multilayer dielectric thin-films so that digital information stored therein can be read in either a sequential or parallel manner.
Another object of the present invention is to provide a novel optical information storage system which employs an optical storage media having a single information storage deck with 2.
times.
N CLC-based information storage layers which can be read using only N laser lines (i.
e.
spectral components).
Another object of the present invention is to provide a novel optical information storage system which employs an optical storage medium having M information storage decks, wherein each storage deck has 2N CLC-based information storage layers, and the M.
times.
N.
times.
2 information storage layers can be read using only N laser lines (i.
e.
spectral components).
Another object of the present invention is to provide such an optical information storage system, in which an optical pick-up is employed that controls the polarization state of the laser beam as it is incident upon the optical storage medium during information reading operations.
Another object of the present invention is to provide such an optical information storage system, in which an optical pick-up is employed that controls the polarization state of the laser beam after it reflects off the optical storage medium during information reading operations