| 摘要 |
A method of telecommunications involving a train of binary signals. A predetermined number (a frame) of the signals is stored in a first register. There are second, third and fourth registers, each of which stores a different number of binary digits, but the total digits stored in the second, third and fourth registers equals the total storage capacity of the first register. The digits are read out of the first register into the second, third and fourth registers. There are three carrier waves for the outputs of the second, third and fourth registers respectively. The ratio of the frequency of a carrier wave to the number of binary signals in the group that is complementary to that particular carrier wave is the same for each carrier wave and its complementary group of binary signals. The three carrier waves are amplitude modulated by the contents of their complementary registers so that each cycle of each carrier wave represents a single binary digit. The three carrier signals may be fed into a common transmission line and delivered to the receiving location. After the signals have been fed out of the first register and are being held in the second, third and fourth registers, the first register is being refilled with the next frame of binary signals. Moreover, after the signals in the second, third and fourth registers have modulated their respective carrier waves, they receive binary signals (representing the second frame) from the first register and those binary signals thereafter modulate their respective carrier waves accordingly. The process thus repeats itself from one frame to the next of the incoming binary signals. |
