JPS5523627A - Synchronizing system of communication using digital random number - Google Patents

Abstract

PURPOSE:To enable to set the random synchronism easily even to the ratio communication lines in deficient transmission quality, through the synchronism by the discrimination of the random number synchronizing code, when the random synchronizing code having a given percentage or more is detected from the random number synchronizing digital signal. CONSTITUTION:In the reciver, the demodulated random number digital signal 2-R via the reception section 9 and the demodulator 10 and received on the antenna AR, enters the random number translator 11, which performs translation together with the controller 12. A plurality of random number synchronizing coded(e.g., 10 codes) received continuously are inspected 11. If 70 % of them are in agreement, it is discriminated as the random number synchronizing code to take synchronizm. From the next bits, independently of the random number synchronizing code received one after another, the signal 2-R is being translated according to the regulation of random number separately set. That is, when the random number synchronizm is once set at the receiver and the discrimination of the sectioning point between the random number synchronizing code and the digital information is established, even if the error in the random number synchronizing code is taken place on the radio lines, the translation is made independently of it.