Cartridge validation with radio frequency identification

Details Cartridge validation with radio frequency identification Cartridge validation with radio frequency identification

2007-05-01

2007-05-01

Barrón, Jr., Gilberto (Department: 2134)

Cryptography

Communication system using cryptography

Wireless communication

C380S051000

Reexamination Certificate

active

10385773

ABSTRACT:
Validation of printer cartridges using a unique identifier from an RFID tag, a serial number or identifier from a cartridge, and a seed to generate a reproducible key are described. The key is written to non-volatile memory of the RFID tag. The parameters for generation of the key are retrieved when the cartridge is asked to print in a printer, and a second key is generated, and the keys are compared. If the keys match, the cartridge is validated and printing continues.

REFERENCES:
patent: 5940854 (1999-08-01), Green et al.
patent: 6362893 (2002-03-01), Francis
patent: 6367010 (2002-04-01), Venkatram et al.
patent: 6386772 (2002-05-01), Klinefelter
patent: 6412991 (2002-07-01), Klinefelter
patent: 2003/0059050 (2003-03-01), Hohberger et al.

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