"ones density." YourDictionary, n.d. Web. 13 December 2018. <https://www.yourdictionary.com/ones-density>.
ones density. (n.d.). Retrieved December 13th, 2018, from https://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.