| 摘要 |
PURPOSE:To attain communication with high secrecy regardless of use of a M series code by including a latch means for setting the state of flip-flops connected in series and changing the content one after another. CONSTITUTION:The content of the latch 3 is outputted from a latch 2 to control AND gates AND1-ANDn and feedback lines h1-hn generate a code II. As a result, the code II is outputted newly from the M series output terminal by a clock pulse after the A. On the other hand, a strobe pulse STB 1 is used as the interruption pulse to a microprocessor and the interruption pulse is used as a trigger and the microprocessor prepares the code III to be generated next. When the strobe pulse STB 2 is inputted, the code output is switched from the II to the III similarly. Since the type and phase of the M series code output are changed one after another, the communication with high secrecy is attained regardless of the use of the M series code. |
