A data processing apparatus comprising: a first compressor (112_1), arranged to perform compression upon a first portion (D_IN1) of an input display data of a frame to generate a first compressed display data (D_C1), wherein the compression performed upon the first portion (D_IN1) of the input display data has a first compression configuration (Conf1/Conf1'); and a first output interface (114_1), arranged to pack a first output display data derived from the first compressed display data (D_C1) into a first output bitstream, and output the first output bitstream via a first display port (P_1) of a display interface; characterized by: a second compressor (112_2), arranged to perform compression upon a second portion (D_IN2) of the input display data of the frame to generate a second compressed display data (D_C2), wherein the compression performed upon the second portion (D_IN2) of the input display data has a second compression configuration (Conf2/Conf2'); and a second output interface (114_2), arranged to pack a second output display data derived from the second compressed display data (D_C2) into a second output bitstream, and output the second output bitstream via a second display port (P_2) of the display interface; wherein the first display port (P_1) is different from the second display port (P_2), and the first compression configuration (Conf1/Conf1') is different from the second compression configuration (Conf2/Conf2'). a first compressor (112_1), arranged to perform compression upon a first portion (D_IN1) of an input display data of a frame to generate a first compressed display data (D_C1), wherein the compression performed upon the first portion (D_IN1) of the input display data has a first compression configuration (Conf1/Conf1'); and a first output interface (114_1), arranged to pack a first output display data derived from the first compressed display data (D_C1) into a first output bitstream, and output the first output bitstream via a first display port (P_1) of a display interface; characterized by: a second compressor (112_2), arranged to perform compression upon a second portion (D_IN2) of the input display data of the frame to generate a second compressed display data (D_C2), wherein the compression performed upon the second portion (D_IN2) of the input display data has a second compression configuration (Conf2/Conf2'); and a second output interface (114_2), arranged to pack a second output display data derived from the second compressed display data (D_C2) into a second output bitstream, and output the second output bitstream via a second display port (P_2) of the display interface; a second compressor (112_2), arranged to perform compression upon a second portion (D_IN2) of the input display data of the frame to generate a second compressed display data (D_C2), wherein the compression performed upon the second portion (D_IN2) of the input display data has a second compression configuration (Conf2/Conf2'); and a second output interface (114_2), arranged to pack a second output display data derived from the second compressed display data (D_C2) into a second output bitstream, and output the second output bitstream via a second display port (P_2) of the display interface; wherein the first display port (P_1) is different from the second display port (P_2), and the first compression configuration (Conf1/Conf1') is different from the second compression configuration (Conf2/Conf2').