H03K 19/17768, H03K 17/302, H03K 3/02335, H03K 3/0375, H03K 19/003, H03K 19/17764, H03K 2217/94116, G06F 21/75, G06F 17/50, H01L 23/57
Disclosed are various embodiments providing circuitry that includes camouflaged gates that each have multiple switches arranged in a predefined format. A switch at a specific position in one camouflaged gate can have a different threshold voltage than a switch at the specific position in another camouflaged gate. The logical function performed by the camouflaged gate can be based on which of the switches have a low threshold voltage and which of the switches have a high threshold voltage.
Iyengar, Anirudh Srikant; Ghosh, Swaroop; Vontela, Deepakreddy; and Nirmala, Ithihasa Reddy, "Threshold voltage defined switches for programmable camouflage gates" (2019). USF Patents. 971.
University of South Florida