See also: Compression

CIMM DEFINITION: An engineering technique for converting a cable TV signal into a digital format which may then be processed in a manner that requires a smaller portion of spectrum for its transmission. This compressed format allows many channels to be carried in the bandwidth normally required for one signal. This format can also be easily stored and manipulated. (Source: CableLabs)

2: An encoding process that saves storage space and enables more channels, networks and other content to be delivered to the Set-Top Box. An encoding / decoding process that minimizes data storage and transmission sizes in STB collection engines.