| 摘要 |
PURPOSE:To eliminate the need for a parallel connecting connector by sending data in series from a copying machine to an additional device by using a radio wave. CONSTITUTION:For control, for example, 8-bit parallel data need be sent from a copying machine 11 to an additional device 18 such as a paper quantity controlling device and a sorter. Transmitter and receivers 20 and 30 convert the parallel data into serial data of a pulse wave having different time series pulse width. A carrier is modulated by the series data and the resulting signal is transmitted through antennas 42 and 43. The received signal is converted into parallel data by the transmitter and receivers 20 and 30. |
