| 摘要 |
<p>A pulse count type communication system in which the RS-232C interface is unnecessitated unlike before and the multi-terminal processing capability of a host computer can be utilized effectively as a whole since coordinate data can be transferred to the host computer via a bus-mouse interface. In the communication system, a transmission part has two pulse circuits each of which outputs a two-phase pulse train including the pulse edges whose number corresponds to an integer represented by a binary-bit train constituting data to be transferred. This transmission part transmits e.g. the coordinate data inputted through a digitizer. A reception part has two counters each of which counts the pulse edges included in the two-phase pulse train, and a reading circuit which defines the number of the counted pulse edges. The counters and the reading circuit are made up of bus-mouse interfaces.</p> |
