Photovoltaic-ferroelectric data recorder

Details Photovoltaic-ferroelectric data recorder Photovoltaic-ferroelectric data recorder

1977-08-15

1979-02-13

Fears, Terrell W.

Static information storage and retrieval

Radiant energy

Ferroelectric

365106, 365109, 1791001B, G11C 1142

Patent

active

041399080

ABSTRACT:
A data recording and read-out apparatus and method in which a ferroelectric eramic substrate is remanently polarized to store information. Upon being illuminated, the substrate produces a photovoltaic voltage, which is detected to effect read-out. A disk of ferroelectric ceramic material to which information is entered by spiral tracking, either in a single track or in multiple tracks. A self-scanning data record comprised of a plurality of ferroelectric ceramic cells which are remanently polarized, and which are read out by a register.

REFERENCES:
patent: 2775650 (1956-12-01), Mason et al.
patent: 3609002 (1971-09-01), Fraser
patent: 3681765 (1972-08-01), Chapman
patent: 3693171 (1972-09-01), Asam
patent: 3740734 (1973-06-01), Maldonado

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