METHOD AND APPARATUS FOR TRANSMISSION AND RECEPTION IN TIME DIVISION MULTIPLEX

PURPOSE:To improve the utilizing efficiency of a transmission line by applying assignment of a transmission line time slot in response to traffic characteristics of telephone signal, a data signal and a picture signal, applying coding to a telephone channel to multiplex the transmission signal only....

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1. Verfasser: AIKO SHINICHI
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To improve the utilizing efficiency of a transmission line by applying assignment of a transmission line time slot in response to traffic characteristics of telephone signal, a data signal and a picture signal, applying coding to a telephone channel to multiplex the transmission signal only. CONSTITUTION:A telephone channel module circuit 105 inputting a telephone signal via a signal line 101-1 encodes the telephone signal. The result of coding is outputted to the 1st multiplex circuit 125 via a signal line 106 and a closing signal closing the telephone line is outputted via a signal line 101-2 according to the assignment signal outputted from an assignment memory 150 via a signal line 151. A picture signal is inputted to a picture channel module circuit 120 via a signal line 104-1 and outputted to the 3rd multiplex circuit 160 via a signal line 121. Further, the presence of a picture signal and speed information are outputted to the 2nd multiplex circuit 130. Moreover, a signal controlling the coding speed is outputted to an external picture encoder via a signal line 104-2 according to the assignment signal via the signal line 151.