| 摘要 |
PURPOSE:To make each data receiving station capable of receiving data in forms, which are free from fluctuation of their transmitting speeds, by changing a transmitting data transmission speed in accordance with the fluctuated amount of the receiving data transmission speed. CONSTITUTION:Transmitting data 18 and transmitting clocks 19 from a data generator 11 are inputted to a synchronizing device 10 and further inputted to a modulator 12 as transmitting data 20 and transmitting clocks 21. Then they are transmitted to a satellite (not shown in the figure) as transmitting radio waves 4 through a transmitter 13, directional coupler 16, and antenna 17. Repeated receiving radio waves 5 are inputted to a demodulator 14 and receiving clocks 23 are extracted. The synchronizing device 10 changes the transmitting clocks 21 so as to make the frequency of the extracted clocks 23 constant. Therefore, each receiving station (not shown in the figure) can receive data whose transmission speed is constant. |
