I/O port signal conversion apparatus for converting between I/O port signals of a first voltage level coupled from or supplied to an I/O port of a computer and A1 signals of a second voltage level supplied to or coupled from audio/video equipment arranged in an S-LINK cable bus system with an S-LINK...http://www.google.fr/patents/US6065075?utm_source=gb-gplus-shareBrevet US6065075 - I/O port signal conversion apparatus and method
