Starting in the late 1990s, advances in digital signal processing (primarily Motorola's DigiCipher 2 video compression technology in North America) gave rise to wider implementation of digital cable services.
自九十年代末，数码信号压缩技术（在北美洲，主要为摩托罗拉之 DigiCipher 2 技术）之进步使数码有线电视服务变得更为普及。