Low-speed signal photoelectric conversion module for DP interface

A non-transitory computer-readable media containing instructions which when executed on a processor of a low-speed signal conversion system, perform a method of low-speed signal conversion for a DP (Display Port) interface, wherein the low-speed signal conversion system comprises a protocol parsing module, an encoding module, a decoding module, a sending link, and a receiving link, the method comprising:

• parsing, by the protocol parsing module, a DP (Display Port) protocol, and sending a low-speed signal of the DP interface to the encoding module, or sending an output signal of the decoding module to the DP interface;
• encoding, by the encoding module, in different forms respectively according to different outputs of the protocol parsing module, and transmitting the encoded signal to the sending link, wherein if the signal is a low-level HPD signal, the signal is encoded as a first periodic signal;
• if the signal is a high-level HPD signal without AUX signal, the signal is encoded as a second periodic signal;
• and if the signal is an AUX signal plus high-level HPD signal, the AUX signal is output directly;
• decoding, by the decoding module, a received signal according to a respective rule, and sending the decoded signal to the protocol parsing module, wherein when a first periodic signal is received, the signal is decoded as a low-level HPD signal;
• when a second periodic signal is received, the signal is decoded as a high-level HPD signal without AUX signal;
• and when an AUX signal is received, the signal is decoded as an AUX signal plus high-level HPD signal;
• transmitting, by the sending link, according to the encoded signal sent by the encoding module;
• and
• receiving, by the receiving link, the encoded signal sent by the opposite end and transmit the encoded signal to the decoding module.