Optical data store and method for storage of data in an optical data store
AssigneeActilor GmbH
InventorNorbert Hampp
Life of this patent
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Abstract
An optical data store is specified, having a data storage layer with a non-toxic and biodegradable polymer as light-sensitive storage medium which has photo-inducible anisotropy, for the induction of which a threshold value of the optical intensity has to be exceeded. The light-sensitive material is preferably bacteriorhodopsin which, by way of example, is immobilized in a manner embedded in a suitable matrix material or, if appropriate, in a crosslinked manner. The storage medium permits a high storage density and can be applied in a simple manner, for instance by printing onto a substrate.
Claims19
A method of storing data comprising the steps of:
- providing an optical data store that is embedded in a matrix material, the optical data store containing a data storage layer comprising a light-sensitive organic or biological polymer that is non-toxic and biodegradable,
- wherein the data storage layer has photo-inducible non-reversible anisotropy, induction of which requires a threshold value of the optical intensity to be exceeded;
- and
- writing data to the optical data store by inducing the photo-inducible non-reversible anisotropy using a recording light having an optical intensity exceeding the threshold value.
A method of storing data comprising the steps of:
- providing an optical data store that is embedded in a matrix material, the optical data store containing a data storage layer comprising a light-sensitive organic or biological polymer that is non-toxic and biodegradable,
- wherein the data storage layer has photo-inducible non-reversible anisotropy, induction of which requires a threshold value of the optical intensity to be exceeded;
- and
- wherein the data storage layer carries data represented by variations of the photo-inducible anisotropy.
A method for storage of data and encryption thereof in a data store, which, as storage medium, has a light-sensitive material which has photo-inducible anisotropy, comprising:
- inducing said photo-inducible anisotropy by exceeding a threshold value of the optical intensity;
- recording binary data using light of two different states of polarization, in particular linearly polarized light, preferably mutually perpendicularly linearly polarized light;
- and
- entirely or partly overwriting a first data record with a second data record, thereby encrypting said first data record.
A method for parallel recording of data blocks in an optical data store, comprising modulating the recording light according to respective data blocks to be recorded, in particular by means of a controllable surface light modulator (SLM), and focusing the modulated recording light toward the optical data store so intensely that its intensity in a storage layer of the optical data store exceeds an intensity threshold required for recording.
Dependencies are inferred from the claim text.