公开(公告)号：US12182281B2

公开(公告)日：2024-12-31

申请号：US17730067

申请日：2022-04-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jefferson P. Ward ,  Jesse Otto Sutherland, III ,  Peter Le Chevallier

IPC: G06F21/44 ,  G03G15/00 ,  G03G15/08 ,  G03G21/18 ,  G06F21/60

Abstract: A logic circuitry package for a replaceable print apparatus component includes a logic circuit and an interface to communicate with a print apparatus logic circuit. The logic circuit is configured to include a plurality of personalities, each personality of the plurality of personalities including an ID and a cryptographic key. The logic circuit is further configured to start a cryptographic session with the print apparatus logic circuit using a selected personality of the plurality of personalities, and transmit a consumable level value to the print apparatus logic circuit in response to a request from the print apparatus logic circuit independent of which personality of the plurality of personalities is the selected personality.

公开(公告)号：US20230020478A1

公开(公告)日：2023-01-19

申请号：US17730067

申请日：2022-04-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jefferson P. Ward ,  Jesse Otto Sutherland, III ,  Peter Le Chevallier

IPC: G03G15/00

Abstract: A logic circuitry package for a replaceable print apparatus component includes a logic circuit and an interface to communicate with a print apparatus logic circuit. The logic circuit is configured to include a plurality of personalities, each personality of the plurality of personalities including an ID and a cryptographic key. The logic circuit is further configured to start a cryptographic session with the print apparatus logic circuit using a selected personality of the plurality of personalities, and transmit a consumable level value to the print apparatus logic circuit in response to a request from the print apparatus logic circuit independent of which personality of the plurality of personalities is the selected personality.