Method for writing data to and reading multiple bit data words f

Details Method for writing data to and reading multiple bit data words f Method for writing data to and reading multiple bit data words f

1998-08-05

2000-05-23

Tran, Andrew Q.

Static information storage and retrieval

Systems using particular element

Molecular or atomic

365112, 365119, 365167, 365234, 369108, 369100, 369288, 43027019, 430496, 4304951, 435 6, G11C 1300, G11B 724

Patent

active

060672463

ABSTRACT:
An optical memory system includes memory cells which utilize synthetic DNA as a component of the information storage mechanism. In the preferred embodiment, memory cells contain one or more chromophoric memory units attached to a support substrate. Each chromophoric memory unit comprises a donor, an acceptor and, at some time during its existence, an active quencher associated with the donor and/or the acceptor. The donor and the acceptor permit non-radiative energy transfer, preferably by Forster energy transfer. To write to the memory cell, the quencher is rendered inactive, preferably by illumination with ultraviolet light. To read, the chromophoric memory units in a read portal are illuminated, and the read illumination is detected. In the preferred embodiment, multiple chromophoric memory units having resolvable read properties are contained within a single read portal. In this way, a multibit word of data may be read from a single diffraction limited read portal. In one aspect of this invention, the read portal is subdivided into multiple write sub-locations, where each sub-location contains chromophoric memory units with acceptors which emit at spectrally resolvable colors. In a further aspect, each sub-location provides variable output based on wavelength, intensity and/or polarization.

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