System and method of transmitting a signal

A system of transmitting a signal, comprising:

• a server motherboard and a hard disk backplane, wherein the hard disk backplane is deployed with a target logic device and a set of hard disk slots, the target logic device is a logic device configured to control a hard disk inserted into each hard disk slot within the set of hard disk slots, and the server motherboard is connected to the hard disk backplane through a cable, wherein,
• the server motherboard is configured to acquire a Virtual Pin Port (VPP) lighting signal to be transmitted to the target logic device and a Serial General Purpose Input/Output (SGPIO) lighting signal to be transmitted to the target logic device, wherein the VPP lighting signal is a lighting signal corresponding to a Non Volatile Memory express (NVMe) hard disk inserted into a hard disk slot in the set of hard disk slots, and the SGPIO lighting signal is a lighting signal corresponding to a Serial Advanced Technology Attachment (SATA) hard disk inserted into a hard disk slot in the set of hard disk slots;
• and the server motherboard is configured to schedule and switch the VPP lighting signal and the SGPIO lighting signal in an orderly time-division way by using a preset time-division multiplexing manner, so as to transmit the VPP lighting signal and the SGPIO lighting signal to the target logic device through a same lighting cable, wherein the preset time-division multiplexing manner comprises:
• continuously detecting the VPP lighting signal and the SGPIO lighting signal to be transmitted to the target logic device within a time-division multiplexing cycle to identify whether the VPP lighting signal or the SGPIO lighting signal is to be transmitted to the target logic device based on respective waveform characteristics of the VPP lighting signal and the SGPIO lighting signal, sampling the VPP lighting signal and the SGPIO lighting signal which are continuously sent, and switching the VPP lighting signal and the SGPIO lighting signal to be alternately transmitted to a time-division multiplexing channel according to one or more specific flag bits of each of the VPP lighting signal and the SGPIO lighting signal and a preset specific rule;
• and
• the target logic device is configured to receive the VPP lighting signal and the SGPIO lighting signal, which are transmitted by the server motherboard through the lighting cable, by using the preset time-division multiplexing manner, and the target logic device is configured to control a display status of a status indicator lamp corresponding to the NVMe hard disk inserted into a hard disk slot in the set of hard disk slots based on the VPP lighting signal, and control a display status of a status indicator lamp corresponding to the SATA hard disk inserted into a hard disk slot in the set of hard disk slots based on the SGPIO lighting signal.