Endoscopic camera system and image signal transmission method thereof

An endoscope camera system, comprising:

• a camera module, configured to convert an optical signal to an electrical signal, and process the electrical signal as an image signal to output;
• an image processing module, connected to the camera module and configured to reprocess the image signal output by the camera module and then output the same to an external monitor;
• a front panel function switching module, configured to be operated by a user and to send a control signal for switching image processing functions to the image processing module based on an operation of the user;
• a front panel control module, connected to the image processing module and the front panel function switching module, and configured to enable the front panel function switching module to communicate with the image processing module;
• and
• a plurality of signal forwarding modules, each of the signal forwarding modules being directly connected to a line through which the image processing module and the external monitor are connected, wherein
• when image signal transmission between the external monitor and the image processing module is abnormal, a signal forwarding module m is configured as a signal forwarding station that is used for bridging the image signal transmission between the image processing module and the external monitor, and the signal forwarding module m is any one of the plurality of signal forwarding modules.