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US 2014/0211241 A1Published application
Authentication systems and methods
AssigneeHewlett-Packard Development Company, L.P.
InventorsHuston W. Rice, David B. Novak, Erik D. Ness, Brendan Hall
Life of this patent
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Abstract
In an embodiment, an authentication system includes a supply device having a data storage chip with identification (ID) bit memory cells. The ID bit memory cells comprising a measured cell, pointer cells to store address information that points to the measured cell, and analog cells that store factory-measured analog information about the measured cell.
Claims15
An authentication system comprising:
- a supply device having a data storage chip with identification (ID) bit memory cells, the ID bit memory cells comprising;
- a measured cell;
- pointer cells to store address information that points to the measured cell;
- and
- analog cells that store factory-measured analog information about the measured cell.
2 more elements
8-15. (canceled)
An ink cartridge comprising:
- a data storage chip having identification (ID) bit memory cells that include a measured cell, pointer cells to store address information that points to the measured cell, and analog cells that store factory-measured analog information about the measured cell.
Dependencies are inferred from the claim text.