Method and apparatus for placing data onto plain paper

Details Method and apparatus for placing data onto plain paper Method and apparatus for placing data onto plain paper

1993-04-15

1994-08-09

Swann, Tod R.

Cryptography

By modifying optical image

380 30, G09C 500

Patent

active

053373626

ABSTRACT:
A method and apparatus for placing digital data on plain paper. One embodiment of the present invention allows for the digital data to undergo encryption before being placed on the plain paper. In one embodiment, a photocopier is used for transferring digital encrypted data to and from a plain piece of paper. The photocopier allows digital data to be stored onto plain paper after encryption, such that the digital data is secure. The photocopier also includes a device to recognize the encrypted digitized pixels on the page such that they may be decrypted and the original image reproduced.

REFERENCES:
patent: 4782221 (1988-11-01), Brass et al.
patent: 4853961 (1989-08-01), Pastor
patent: 4939354 (1990-07-01), Priddy et al.
patent: 5113445 (1992-05-01), Wang
patent: 5170044 (1992-12-01), Pastor

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