12 Facts About ATSC standards

Advanced Television Systems Committee standards are an American set of standards for digital television transmission over terrestrial, cable and satellite networks.

ATSC standards were developed in the early 1990s by the Grand Alliance, a consortium of electronics and telecommunications companies that assembled to develop a specification for what is known as HDTV.

ATSC standards technology was primarily developed with patent contributions from LG Electronics, which holds most of the patents for the ATSC standards standard.

ATSC standards includes two primary high definition video formats, 1080i and 720p.

Many aspects of ATSC standards are patented, including elements of the MPEG video coding, the AC-3 audio coding, and the 8VSB modulation.

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Broadcasters who used ATSC standards and wanted to retain an analog signal were temporarily forced to broadcast on two separate channels, as the ATSC standards system requires the use of an entire separate channel.

Channel numbers in ATSC standards do not correspond to RF frequency ranges, as they did with analog television.

Transport, ATSC standards uses the MPEG systems specification, known as an MPEG transport stream, to encapsulate data, subject to certain constraints.

ATSC standards uses 188-byte MPEG transport stream packets to carry data.

ATSC standards signal is more susceptible to changes in radio propagation conditions than DVB-T and ISDB-T.

In spite of ATSC standards's fixed transmission mode, it is still a robust signal under various conditions.

Mobile reception of digital stations using ATSC standards has, until 2008, been difficult to impossible, especially when moving at vehicular speeds.