| 摘要 |
PURPOSE:To realize a secret information transmission system which can hold a high secrecy by giving the serial binary addition to the two output of the cipher information reader and the transmission information reader for transmission with addition of the synchronous signal and then carrying out the decoding at the reception side. CONSTITUTION:The secret information is prepared to transmission information medium 3, and the contents of the information is read at transmission side information reader 4 to be the input of adder 6 after output in the serial binary number. While the cipher information is written into cipher information medium 1a, and this contents is read by cipher information reader 2a to be supplied to adder 6 after output in the serial binary number. Adder 6 gives the binary addition to the two output, and the synchronous signal sent from synchronous signal generator circuit 5 is added to the output to be transmitted through transmission side transmission processor 7. The transmitted information is read by reception side transmission processor 10 and then supplied to subtractor 11 in the form of the serial binary number. On the other hand, the contents prepared at docoding information medium 1b is read through decode information reader 2b and then supplied to subtractor 11 to be subtracted according to the synchronous signal sent from synchronous signal detection circuit 12. Thus the original secret information is written into reception information medium 14. |
