disparity:    The difference between the number of ones and the number of zeros in a transmission character.

See also: 8b/10b encoding, beginning running disparity, current running disparity, running disparity

Concepts

There are three variants of disparity, positive, negative and neutral. A Transmission Character with more 1's than 0's is said to have positive running disparity. A Transmission Character with more 0's than 1's is said to have a negative running disparity. A Transmission Character with an equal number of 1's and 0's is said to have neutral disparity. The concept of "running" is because the analysis of disparity is within the bit stream.