A signal processing circuit, applied to a contactless connector, the contactless connector comprising a plug and a socket, the plug comprising a main coil, the socket comprising a secondary coil, the plug and the socket being in communication connection respectively through electromagnetic coupling between the main coil and the secondary coil, and the signal processing circuit being arranged on the plug and/or the socket, wherein the signal processing circuit comprises a cable, a port processing unit and a signal processing unit;
- the cable, one end of which can be connected to a device and the other end of which is connected to the port processing unit, is configured to receive a signal transmitted by the device and/or transmit a signal to the device;
- the port processing unit, one end of which is connected to the cable and the other end of which is connected to the signal processing unit, is configured to acquire a data communication transmission mode of a port of the device connected to the connector and perform interface configuration on the cable according to the data communication transmission mode;
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- the signal processing unit, which is connected to the main coil and/or the secondary coil, is configured to, if receiving the signal transmitted by the device, transmit the signal to the main coil and/or the secondary coil, and/or is configured to, if receiving the signal transmitted by the main coil and/or the secondary coil, transmit the signal to the device according to the data communication transmission mode;
- the port processing unit comprises an input/output processing module and a signal processing module;
- the input/output processing module, one end of which is connected to the cable and the other end of which is connected to the signal processing module, is configured to calculate a device side signal compensation factor according to the received signal and an initial signal transmitted by the device;
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- the signal processing module, one end of which is connected to the input/output processing module and the other end of which is connected to the signal processing unit, is configured to receive the signal transmitted by the main coil and/or the secondary coil, convert the signal according to the data communication transmission mode and transmit the converted signal to the input/output processing module, so that the input/output processing module performs compensation processing on the converted signal according to the device side signal compensation factor and transmits the processed signal to the device.