Replaceable printer component including a memory storing a tag encryption mask
First Claim
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1. Anon-transient data storage device for a replaceable printer component, storing:
- data in a plurality of tags and a plurality of data blocks, each tag identifying a length of a corresponding data block, anda tag encryption mask that indicates an encryption status of each data block of the plurality of data blocks; and
a communication link comprising electrical contacts to link the data storage device to a printer controller of a printing system when the replaceable printer component is installed in the printing system;
wherein;
the tag encryption mask indicates the encryption status of each data block by associating each encryption status to each respective tag of each data block, andthe encryption status indicates to the printer controller that reads the encryption mask whether the respective data block is encrypted or unencrypted for decrypting a data block indicated as encrypted and not decrypting a data block indicated as unencrypted for reading the contents of the data blocks.
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Abstract
A replaceable printer component includes a memory and a communication link. The memory stores a tag encryption mask and data. The data is stored in a plurality of portions of the memory where each portion is defined by a tag. The tag encryption mask indicates an encryption status of each portion of the memory defined by a tag. The communication link is configured to communicatively link the memory to a printer controller when the replaceable printer component is installed in a printing system.
22 Citations
9 Claims
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1. Anon-transient data storage device for a replaceable printer component, storing:
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data in a plurality of tags and a plurality of data blocks, each tag identifying a length of a corresponding data block, and a tag encryption mask that indicates an encryption status of each data block of the plurality of data blocks; and a communication link comprising electrical contacts to link the data storage device to a printer controller of a printing system when the replaceable printer component is installed in the printing system; wherein; the tag encryption mask indicates the encryption status of each data block by associating each encryption status to each respective tag of each data block, and the encryption status indicates to the printer controller that reads the encryption mask whether the respective data block is encrypted or unencrypted for decrypting a data block indicated as encrypted and not decrypting a data block indicated as unencrypted for reading the contents of the data blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification