Redundant optical recording of information in different formats
AssigneeDrexler Technology Corporation
InventorJerome Drexler
Life of this patent
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Abstract
Information is recorded in situ on a wallet-size card by disposing laser recordable material in the card, then recording indicia, in situ, on the material with a laser. At least some of the indicia are microscopic eye readable information, with the rest being machine readable information, with the eye readable information being redundant with at least some of the machine readable information. This visually read information is recorded as characters made up of matrices of nonconnected laser recorded spots. The characters may be alphanumeric characters, or the like. The characters are read with an optical magnifier. A laser beam and light detector may be used to read the digital information by scanning the card with the beam.
Claims28
A method for recording information in situ on a card comprising,
- disposing at least one strip of optical contrast direct-read-after-write laser recording material in a carrier and
- recording information indicia onto said strip, in situ, by means of a laser, at least some of said information indicia being microscopically eye readable information, the other information being machine readable information, the eye readable information being redundant with at least some of the machine readable information.
A system for sequentially recording information with a laser comprising,
- a wallet size card having at least one strip of optical contrast direct-read-after-write laser recording material thereon capable of in-situ laser recording of information thereon, at least some of the laser recorded information being microscopically eye readable information, the other information being machine readable information, the recording material adapted for laser recording of subsequent sequential data, eye readable information being redundant with at least some of the machine readable information,
- laser means having a beam disposed in laser writing relation with respect to said laser recording material for writing sequential data thereon,
- a light detector means disposed in reading relation to said recording material for reading said sequential data, and
- means providing relative motion between the beam and the card for reading and writing said sequential data on the card.
Dependencies are inferred from the claim text.