Apparatus for transmitting and receiving broadband eithernet data and video data using preprocessor module and method of transmitting and receiving broadband eithernet data and video data

PURPOSE: An apparatus for transmitting and receiving broadband Ethernet data and video data using a preprocessor module is provided to add a unique identifier to the video data so as to identify the video data easily even in a high error rate environment. CONSTITUTION: A preprocessor module(102) of a data transmitting module gives an identifier to video data of broadband Ethernet data of an L2 switch module(101). A preprocessor module of a data receiving module performs CRC(Cyclic Redundancy Check) of the video data on the basis of the given identifier and restores defective video data.