@INPROCEEDINGS{4042469, author={Couture, N. and Kent, K.B.}, booktitle={Field Programmable Technology, 2006. FPT 2006. IEEE International Conference on}, title={Periodic licensing of FPGA based intellectual property}, year={2006}, pages={357-360}, keywords={copy protection;cryptography;field programmable gate arrays;industrial property;integrated circuit design;logic design;Xilinx Vertex 2 FPGA;cryptography;hardware architecture;hardware licensing;intellectual property;licensing architecture;periodic licensing;secure memory technologies;software licensing;Computer architecture;Consumer products;Cryptography;Field programmable gate arrays;Hardware;Intellectual property;Licenses;Marketing and sales;Protection;Watermarking}, doi={10.1109/FPT.2006.270347},}