Patent · US Expired

Process for the reversible optical storage of data

US4837745A · kind A · utility

35Cited by

4References

31Claims

0Family size

Assignee

Rohm GmbH Chemische Fabrik · DE

Inventors

Manfred Eich · Frankfurt am Main, DE
Joachim H. Wendorff · Marburg, DE
Bernd Reck · Arnstadt, DE

Key dates

Filing date	Feb 3, 1987
Grant date	Jun 6, 1989
Priority date	—
Expiry date	Feb 3, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG11B13/00
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention concerns a process for reversible optical information storage by means of a liquid crystal storage medium, whereby the information is stored in a firm of a liquid crystal side chain polymer in an anisotropic phase by means of locally acting heat source in combination with an electric, magnetic or surfaces active field, through local reorientation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.