Back to results
US 9,852,282 B2Granted
Protecting data in memory of a consumable product
AssigneeHewlett-Packard Development Company, L.P.
InventorsPaul L. Jeran, Stephen D. Panshin, Jefferson P. Ward
Life of this patent
Estimating the term…
Abstract
A non-transitory memory storing a digital signature of a consumable product where the digital signature indicates that an identifier and host device setting data are from a trusted source.
Claims20
A non-transitory memory, storing
- a digital signature of a consumable product where said digital signature indicates that an identifier and host device setting data are from a trusted source, wherein the host device setting data is included in the digital signature and comprises a setting for operation of a host device.
A non-transitory memory, storing
- a digital signature of a consumable product where said digital signature indicates that an identifier and host device setting data are from a trusted source, wherein said setting data includes printer functional data;
- and wherein said setting data is stored in a tag-length-value (TLV) format.
A consumable product, comprising:
- a memory;
- an interface to communicate with a host device when the consumable product is installed;
- a storing engine to store a digital signature in the memory where said digital signature indicates that an identifier and printer functional data are from a trusted source, wherein the primer functional data is included in the digital signature, the printer functional data providing settings for operation of the host device with the consumable product;
- and
- an exchanging engine to exchange the printer functional data with said host device during an authentication session.
2 more elements
A print cartridge comprising a non-transitory computer readable storage medium comprising computer readable instructions that, when executed, cause a processor of a host device to:
- read a digital signature in memory of a consumable product where said digital signature indicates an identifier and host device setting data are from a trusted source, the host device setting data included in the digital signature wherein the host device setting data comprises a setting for operation of a host device;
- and
- exchange portions of said digital signature and said setting data during an authentication session between the storage medium and said host device.
Dependencies are inferred from the claim text.