An error control coding method is proposed to improve the reliability of serial data transmission for the display information of a LED large screen remote communication system. Considering the difference of the hardware basis and the implementation requirements between a transmitter and a receiver, a parallel algorithm structure is presented at the information transmitter，and the generating coding matrix is deduced to improve the real time performance of the coding algorithm. Moreover, a dual clock serial circulation decoding structure is presented at the information receiver, in which the high-speed clock after serial syndrome computation is used to correct the error bit to allow the long codeword to obtain a low hardware overhead and real time processing ability. Practice and theoretical analysis shows that the designed scheme can accomplish a high effective coding in efficiency of 98.2%, and can reduce the bit error rate effectively at least 1 order of magnitude in the application. The scheme can achieve high efficient serial transmission of display information.