Information storage system utilizing electrets

Details Information storage system utilizing electrets Information storage system utilizing electrets

1983-06-13

1986-01-21

Faber, Alan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369110, 369126, 365146, G11B 1108

Patent

active

045660867

ABSTRACT:
A system for reading and storing data includes a rotating transparent substrate having a layer of dielectric material disposed thereon. A movable support member positioned adjacent one side of the substrate includes a radiant energy source and an electrical field generator which, when energized, produces an electret in the dielectric material when heated to an electret forming temperature by the radiant energy source and which polarizes light rays from the radiant energy source in a direction representing a binary value. An optical detector mounted on a support member adjacent the opposite side of the substrate detects the presence or absence of the polarized light and generates electrical signals representing such conditions. The electrical field generator includes a plurality of pole members for producing an electret having more than one plane of polarization, each of which represents a different binary value.

REFERENCES:
patent: 3276031 (1966-09-01), Gaynor
patent: 3445824 (1969-05-01), Fulenwider
patent: 3660818 (1972-05-01), Amodei
patent: 3794986 (1974-02-01), Murayama
patent: 4125860 (1978-11-01), Ishii
patent: 4139908 (1979-02-01), Brody
patent: 4512940 (1985-04-01), Anderson

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