| 摘要 |
Information transfer system using a communication medium (1) and a number of information transmitting and/or receiving units, by which each unit connected to the communication medium (A) supplies or produces a reference frequency (2). The reference frequencies (2) for all of the units connected to the system are mutually so chosen, that these form synchronous frequencies in relation to each other. The frequency is connected to a device (3) in order to form one of several channel frequencies via this device (14). The chosen channel frequency is modulated with information at the transmitter unit in the modulation device (6). Such transmitted information is receivable and detectable in receiver units with the help of a synchronized channel frequency supplied thereto or generated with the transmitter's channel frequency.<IMAGE> |
