Printer controller having tamper resistant shadow memory
AssigneeSilverbrook Research Pty Ltd
InventorSimon Walmsley
Life of this patent
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Abstract
A printer controller is provided having an integrated circuit incorporating a processor and memory. The memory stores a set of data representing program code and/or an operating value for printer control. Each bit of the data is stored as a bit/inverse-bit pair in corresponding pairs of physically adjacent bit cells in the memory.
Claims19
A printer controller comprising an integrated circuit incorporating a processor and memory, the memory storing a set of data representing program code and/or an operating value for printer control, wherein each bit of the data is stored as a bit/inverse-bit pair in corresponding pairs of physically adjacent bit cells in the memory.
Dependencies are inferred from the claim text.