| 摘要 |
1. Process for the coded transmission of messages, whereby said messages are mixed on the sender side with a pulse sequence produced by a cipher generator determined by at least one secret cipher key and recovered on the receiver side by mixing with an identical pulse sequence produced by an identical cipher generator determined by the same cipher key, characterized in that the sender and receiver stations are tuned to each other prior to being placed in their respective locations, preferably by connecting them by a cable, thereby automatically producing an identifying key (ID) and permanently storing it on both sides, and that at least during a predetermined period of time all messages are coded and decoded by using said identifying key as the cipher key. |
