Process for reading-out information from electrically polarizabl

Details Process for reading-out information from electrically polarizabl Process for reading-out information from electrically polarizabl

1985-12-04

1988-11-15

Cardillo, Raymond F.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369126, 365118, 365109, G11B 902, G11B 910, G11B 1108, G11B 1304

Patent

active

047854375

ABSTRACT:
The information recorded in the data carrier in the form of a locally variable electric polarization is scanned and selected by means of an electron beam. For this purpose, the secondary electrons produced on the surface of the data carrier are used. The data carrier is simultaneously either periodically heated by radiating electromagnetic waves or charged with ultrasonics. Potential fluctuations of equal frequency thereby arise on the surface of the data carrier dependent on local polarization, which fluctuations result in a modulation of the secondary electrons. The secondary electron flow thus receives information via the polarization conditions stored in the data carrier. To recover this information, the secondary electron flow is frequency-selectively amplified and electronically evaluated according to amount and/or phase. A polyvinylidene flouride film (PVDF) is preferably used as data carrier.

REFERENCES:
patent: 2698928 (1955-01-01), Pulvari
patent: 2926336 (1960-02-01), Chymoweth
patent: 3171106 (1965-02-01), Lemmond
patent: 3478334 (1969-11-01), Kump
patent: 4059827 (1977-11-01), Byatt
patent: 4139908 (1979-02-01), Brody
Blanchard et al, IBM Tech. Dis. Bulletin, vol. 9 No. 12, May 1967, p. 1762.

Affiliated with

Also associated with

Rating

Process for reading-out information from electrically polarizabl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for reading-out information from electrically polarizabl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for reading-out information from electrically polarizabl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1107521