| 摘要 |
PURPOSE:To save the amount of buffer memory of a satellite earth station by storing distributingly a signal of a line on the earth subjected to time division multiplex in a buffer memory in the unit of 8 bits and transmitting subscriber information as a burst signal. CONSTITUTION:Subscriber information a<j>i (i=1-24, j=1-48) is the information of the 1st subscriber and b<j>i is the information of the 32nd subscriber and the subscriber information of ch1-ch32 subjected to 24-multiplex is inputted to a multiplex circuit 1. The circuit 1 outputs a signal (a) subjected to 32 multiplex of ch signal and inputs it to a distribution circuit 2. The output of the circuit 2 is stored in 32 sets of buffer memories M1-M32. The transmission signal of each subscriber information the satellite is transmitted as the 1st signal a1.2-b1.2, the 2nd burst signal a3.4-b3.4...the 24th burst signal a47.48-b47.48. The burst signals are outputted from the memories M1-M32. The buffer memories used for the system are 48X32 buffers in the unit of 8 bits and the number is 1/24 as compared with conventional examples.
|
