Method of transmitting and receiving image signals and image processing device for implementing the same

An image processing device, comprising:

• a transmitter configured to generate a control field frame including Average Picture Level (APL) data of image data and an error detection code for the APL data, transmit the generated control field frame in a vertical blanking period according to a serial interface system, and transmit pixel data of the image data in a vertical non-blanking period according to the serial interface system;
• and
• a receiver configured to receive the control field frame and the pixel data according to the serial interface system, parse the APL data and the error detection code, determine whether an error occurs in the APL Data using the error detection code, display the pixel data according to the APL data based on determining that the error fails to occur, and ignore the APL data based on determining that the error occurs.