"ones density." YourDictionary, n.d. Web. 17 September 2018. <http://www.yourdictionary.com/ones-density>.
ones density. (n.d.). Retrieved September 17th, 2018, from http://www.yourdictionary.com/ones-density
Providing a guaranteed number of 1s every so many bits in a transmission. When too many consecutive 0s are sent, there is too much time in between pulses (voltage), and the receiving circuit can lose synchronization. See B8ZS and AMI.