Interface module for transmitting digital video signal

An interface module for transmitting a digital video signal comprising:

• a transmitting interface unit having (1) a first 4-core optical fiber cable, (2) a first 4-core male optical connector provided at one end thereof, and (3) a first digital visual interface (DVI) connector provided at another end thereof, said first DVI connector including a light emitting device unit converting RGB signals and clock signals from electrical to optical signals and a built-in display data channel (DDC) signal generating means for outputting identification information associated with a video output display unit and being attached to a first DVI connector terminal of a host device outputting a video signal;
• a receiving interface unit having (1) a second 4-core optical fiber cable, (2) a second 4-core male optical connector provided at one end thereof, and (3) a second DVI connector provided at another end thereof, said second DVI connector including a photo detector unit converting RGB signals and clock signals from optical to electrical signals and being attached to a second DVI connector terminal of a video output display unit;
• and
• a 4-core optical cable unit consisting of (1) a third 4-core optical cable and (2) 4-core female optical connectors provided at both ends thereof, the 4-core female optical connectors designed to be engaged with the first and second 4-core male optical connectors,
• wherein each of the lengths of the first and second 4-core optical fiber cable is greater than or equal to one fourth of the circumference of a circle whose radius corresponds to an allowable bend radius of the first and second 4-core optical fiber cable.