| 摘要 |
The transmitter (1) transmits a packet of digital data words Pd, with a binary code Id in front of it to several receivers (2a-2c) at microwave frequencies. The transmitter has a microprocessor (12) which is clock controlled (15). An operator can select information via a visual display (13) and keyboard (11). Then an identifier Ij associated with each packet of words is added to the packet of information made up of several binary codes (Cj). Each receiver has a binary selection filter corresponding to a particular identifier code, allowing selected requested information to be filtered. ADVANTAGE - Allows selection of binary information transmitted as function of their content or type.
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