Physically optimized optical disc structure, method and apparatu

Details Physically optimized optical disc structure, method and apparatu Physically optimized optical disc structure, method and apparatu

1980-02-25

1982-11-23

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

346 76L, 3461351, 369275, 369284, G11B 700, G11B 724, G11B 726

Patent

active

043609082

ABSTRACT:
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.

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patent: 4216501 (1980-08-01), Bell
patent: 4239338 (1980-12-01), Borrelli et al.
Thomas et al, WO 79/00404, Medium for Recording by Thermal Deformation 7/12/79.
Broadbent, A Review of the MCA Pisco-Vision System, 4/26/74.
Bell et al, Antireflection Structures for Optical Recording, IEEJ of Quantum Elec. vol. QE 14, No. 7, 7/78, pp. 487-495.

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