Multiplex (television)

The term is also used in an otherwise unrelated sense to refer to additional channels offered by premium pay television services, such as HBO, similar to its meaning with regard to movie theaters.

[6] The ISDB-T specification includes 1seg, a mobile media and data broadcasting service utilizing a portion of the spectrum in each multiplex.

It was not until 2009 that commercial broadcasters were allowed to add multichannels; in that year, the three major networks all did so, bringing the number of channels they offered from three to eleven.

The decision was made, per an advisor to the Brazilian communications ministry, to prevent the leasing of channels to broadcast infomercials and church services.

[9][10] The Canadian Radio-television and Telecommunications Commission (CRTC) requires stations to file licence amendments in order to be considered for permission to carry digital subchannels.

[12] In 2016, the IFT began assigning virtual channels to stations based on their programming, grouping transmitters of the same national network.

The Supreme Court of Spain ruled in December 2012 to void this action, stating that the move was illegal as it did not award the channels by way of a public bidding process.

Diginets have continued to grow as more advanced encoders enable stations to add additional, income-generating ancillary services.