DigiCipher II
DigiCipher II (DCII) is a Motorola proprietary digital video distribution system. DigiCipher II provides compression, encryption, and authorization. DigiCipher II compression is based upon MPEG-2. DigiCipher II is utilized for some TVRO transmissions. A Motorola 4DTV satellite receiver is required to decode DigiCipher II TVRO channels. DigiCipher II utilizes AC3 audio encoding.