本文叙述了在电报通信中应用反相键控信号作为差错控制码进行检错,它与偶性码相结合具有较高的检错能力,并能自行纠正单个码元错误。计算了在码元随机独立错误情况下应用这种编码方案的纠正差错的能力。本文的最后部分设计了实际应用电路并给出了通信线路的试验结果。 This paper describes the application of antiphase keying signal as error control code in telegraphy communication to detect errors. Combined with the even code, it has high error detection ability and can correct single symbol error by itself. The ability to correct errors using this coding scheme is calculated in the case of random independent error of the symbols. The last part of this article designs the practical application circuit and gives the test result of the communication line.