Accession Number : ADD006263

Title :   Photovoltaic-Ferroelectric Data Recorder.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Brody,Philip S

Report Date : 13 Feb 1979

Pagination or Media Count : 7

Abstract : This patent discloses a data recording and read-out apparatus and method in which a ferroelectric ceramic 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 inforamtion 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. (Author)

Descriptors :   *Patents, *Electronic recording systems, Ferroelectric materials, Ceramic materials, Ferroelectric domains, Polarization, Data storage systems, Photovoltaic effect, Signal processing, Information retrieval, Shift registers

Subject Categories : Recording and Playback Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE