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公开(公告)号：US20190037107A1
公开(公告)日：2019-01-31
申请号：US16073033
申请日：2016-05-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Honee L MESA , Marvin D NELSON , Paul JERAN , Chris R GUNNING , Erik D NESS
CPC classification number: H04N1/4426 , G06F21/44 , G06F21/57 , G06F21/608 , G06F21/76 , H04L9/0897 , H04N1/0097 , H04N1/4433
Abstract: Examples associated with printer firmware encryption are described. One example printer includes a base firmware module. The base firmware module controls a base function of the printer. The printer also includes a first encrypted firmware module that modifies a first function of the printer. The first encrypted module is inactive until decrypted. A firmware decryption module decrypts the first encrypted module upon receiving a first encryption key.
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公开(公告)号：US20240123735A1
公开(公告)日：2024-04-18
申请号：US18276570
申请日：2021-02-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Kyle MICHEL , Laurent PIZOT , Kyle MANNARI , Elijah HOULE , Honee L MESA , Teresa M O'KEEFFE , Lee JACKSON , Gabriel Scott MCDANIEL , Steven T CASTLE , Paul L JERAN , David B NOVAK
CPC classification number: B41J2/17546 , B41J2/17559 , G06F21/44 , G06F21/45 , G06F21/305 , G06F2221/2129
Abstract: Reprocessing of a replaceable supply component may include receiving from an encoding device and using an interface communicatively coupled to the encoding device, a request blob to reprocess a replaceable supply component. The method may include in response to cryptographically verifying the request blob, extracting from the request blob, a supply identifier and raw supply data. The method further includes using the supply identifier and raw supply data, generating a reprocess structure to append or amend original manufacturing data for the replaceable supply component, and providing a response blob to the encoding device, to designate the replaceable supply component as a reprocessed supply component.
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