Encoding device, encoding method, decoding device, decoding method, and program

An encoding method comprising:

• dividing input data into data strings of N bits or M bits, the data strings including a first data string;
• calculating a running disparity for the data strings;
• determining whether the first data string is a control code or transfer data;
• setting a flag for the first data string to a first value or a second value depending upon the running disparity when it is determined that the first data string is transfer data;
• setting the flag to the second value when it is determined that the first data string is the control code;
• inverting the first data string when it is determined that the first data string is transfer data and the flag is set to the second value;
• and
• outputting the first data string.

A non-transitory computer readable medium storing program code, the program code being executable by a processor to perform operations comprising:

• dividing input data into data strings of N bits or M bits, the data strings including a first data string;
• calculating a running disparity for the data strings;
• determining whether the first data string is a control code or transfer data;
• setting a no for the first data string to a first value or a second value depending upon the running disparity when it is determined that the first data string is transfer data;
• setting the flag to the second value when it is determined that the first data string is the control code;
• inverting the first data string when it is determined that the first data string is transfer data and the flag is set to the second value;
• and
• outputting the first data string.