| 摘要 |
PURPOSE:To attain the perfect privacy communication by deciding the receiving conditions of each time with the key frame operations of the preceding time and the time two steps ahead respectively. CONSTITUTION:The transmission data are all divided into frames and transmitted successively. A communication frame contains a start flag, an address, the data, a key, BCC and an end flag. This key serves as the information to decide the receiving conditions of the next frame. At the reception side the prescribed initialization is carried out and the key information within each of the (N-1)th reception frames (N: positive integer) is operated by a prescribed arithmetic system. Based on the result of this operation, the receiving conditions are decided for the (N+1)th frame. |
