公开(公告)号：US3601543A

公开(公告)日：1971-08-24

申请号：US3601543D

申请日：1970-03-17

申请人： LIGNES TELEGRAPH TELEPHON

发明人： MANIERE MAURICE M ,  TAMBUTTE HENRI L

IPC分类号： H04J3/06 ,  H04L5/22 ,  H04L7/04 ,  H04L7/06 ,  H04L12/40 ,  H04L12/43 ,  H04J3/08

CPC分类号： H04L12/417 ,  H04J3/0647 ,  H04L5/22 ,  H04L7/0008 ,  H04L7/06 ,  H04L12/43 ,  H04L2007/047

摘要： A time division binary-coded data transmission system using two parallel and juxtaposed transmission lines, with a number of sending and receiving stations distributed along said lines and coupled to both of them. The first line transmits synchronization frames supplied by a central station, and the second one the information. The system is characterized in that at each sending station, the information signals transmitted by the second line are derived from the synchronization signals transmitted by the first, by means of a coupling circuit modulating the latter signals according to the coding conditions of the data to be transmitted, without altering the essential features of their waveshape. Thanks to this arrangement, the total lengths of line through which synchronization and coded data signals are transmitted are the same, and the thus preserved similarity of their waveshapes allows correct demodulation of the latter by simple comparison with the former.