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Schouhamer Immink Kornelis Ant: Method of transmitting information by means of code signals, information transmission system for carrying out the method, and transmitting and receiving apparatus for use in the transmission system.. Philips, August 10, 1988: EP0277395-A1

A method of and system for transmitting n-bit information words is revealed, using code signals (Sc, xi) in which the bits (b1, b2, b3, b4) having corresponding bit positions in different information words are always represented by frequency components (fd1, fd2, fd3, fd4; fh1, fh2, fh3, fh4) in the ...