A logic circuit comprising: a plurality of logic elements; wherein at least one logic element includes, first and second LUT blocks that includes an output; an output multiplexer that includes first and second inputs, an output, and that includes a control output; a control input multiplexer circuit...http://www.google.com.hk/patents/US7030652?utm_source=gb-gplus-share專利 US7030652 - LUT-based logic element with support for Shannon decomposition and associated method
