A novel single-wire digital handshake of communication speed for universal connector

Industrial development promotes the production of various electronics for contributing to our life. On the other hand, various electronics occur the compatibility trouble about the communication standard. Especially, the compatibility of physical connection standards such as USB or Ethernet is required without the converter of the connector. One way to solve the compatibility of physical connection is the universal connector that enables optimal communication according to the connection partner. The universal connector can be realized by single-wire handshake of pin assignment which automatically negotiates the voltage signal or the role of the pin. After the connection between the pin, all connected pin conducts the single-wire handshake for determining the pin assignment. The single-wire pin assignment handshake consists of the physical half-duplex communication that conducts transmission and reception on one connection line. The physical half-duplex communication requires the single-wire handshake of the communication speed because the multi-pin cannot use for the communication. In addition, the communication speed cannot determine in advance because the connection partner is assumed various for the compatibility. In this paper, we propose the single-wire handshake which automatically adjusts the communication speeds for the universal connector. Moreover, the feasibility of our method is evaluated by the analysis result of the voltage signal between electronics.