Half duplex (Half Duplex) is a transmission system. Using the same transmission line for both receiving and sending, data can be transmitted in both directions, but both parties cannot send and receive data at the same time. This transmission method is half-duplex.
In data communication, data transmission on the line can be divided into three types: simplex communication, half-duplex communication and full-duplex communication.
The difference between half-duplex and full-duplex:
Full duplex mode (full duplex) refers to a transmission method in which when the sending and receiving of data are split and transmitted by two different transmission lines, both parties in the communication can send and receive at the same time. In the full-duplex mode, each end of the communication system is equipped with a transmitter and a receiver, so data can be controlled to be transmitted in both directions at the same time. The full-duplex mode does not need to switch the direction. Therefore, there is no time delay caused by the switching operation. This is suitable for interactive applications that cannot have time delay (such as remote monitoring and control). System) is very advantageous. For example, in communication products, walkie-talkies are a typical example of half-duplex; telephones are full-duplex applications. For example, Yealink’s full series of VoIP phones and video conference phones use full-duplex mode, using dual In addition to convenient communication, the patented intelligent noise cancellation technology can effectively avoid full-duplex noise interference.
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