DigiCipher 2

[1] The original attempt for a North American digital signal encryption and compression standard was DigiCipher 1, which was used most notably in the now-defunct PrimeStar medium-power direct broadcast satellite (DBS) system during the early 1990s.

Approximately 70% of newer first-generation digital cable networks in North America use the 4DTV/DigiCipher 2 format.

[2] The use of DCII is most prevalent in North American digital cable television set-top boxes.

DCII is also used on Motorola's 4DTV digital satellite television tuner and Shaw Direct's DBS receiver.

Also unlike DVB, all text used in descriptors can be compressed using standard Huffman coding which saves on broadcast bandwidth and loading times.