| 摘要 |
PURPOSE:To realize the transfer of the information data with high stability and high reliability and with a comparatively simple constitution of circuit, by transmitting the information data after coding it to a binary signal having a prescribed time ratio corresponding to plural information data respectively and reproducing the binary signal at the receiver side. CONSTITUTION:Plural information data is transmitted by coding a dial signal to a binary signal 10 for example. This binary signal consists of a signal part of the 1st state and a signal part 12 of the 2nd state different from the 1st state. The time duration ratio TH and TL of these signal parts 11 and 12 is varied to ensure a correspondence between a dial signal and a time ratio TH/TL. At the receiver side, the binary signal coded and transmitted is reproduced to the original dial signal. |
