Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Oh yes. Patent rights has ended in 1998, if I remember, but "x10 powerhouse", producer of TW523, has not actualized TW523.pdf since 1997. In this document, on page 2 you see this words: "The X10 code format is patented" :smile:.