A UART including a logic unit is disclosed, wherein the logic unit automatically enables or disables the UART receiver port whenever data is being processed by the UART for wireless transmission. More specifically, a logic unit is connected to a data store, to a transmit FIFO and to a UART processing...http://www.google.com.tw/patents/US5918024?utm_source=gb-gplus-share專利 US5918024 - Method and apparatus for providing single channel communications
