A multi-logical access for a serial data link designed with a multi-logical serial interface protocol which permits multi-drop applications to communicate in a time division multiplex mode over a singular drop or physical serial link such as an RS-232 link. Data is exchanged over the serial data link...http://www.google.com/patents/US6728210?utm_source=gb-gplus-sharePatent US6728210 - Multi-logical access for a serial data link
