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The 5.1 tracks were encoded using 16-bit PCM audio in a delta modulation compression which resulted in a compression level of 4:1. The audio channels in CDS were arranged in the same way that most current 5.1 systems with Left, Center, Right, Left Surround, Right Surround and LFE. Dick Tracy (1990) was the first film encoded with CDS.
Infobox for television channels and networks Template parameters [Edit template data] This template prefers block formatting of parameters. Parameter Description Type Status Name name Channel name, used as a heading String suggested Logo logo Logo of the television channel File optional Logo size logo_size Size for logo String optional Logo upright scaling factor logo_upright See MOS:UPRIGHT ...
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In 1981, United Video Satellite Group launched the first EPG service in North America, a cable channel known simply as The Electronic Program Guide.It allowed cable systems in the United States and Canada to provide on-screen listings to their subscribers 24 hours a day (displaying programming information up to 90 minutes in advance) on a dedicated cable channel.
ATSC supports 5.1-channel surround sound using Dolby Digital's AC-3 format. Numerous auxiliary datacasting services can also be provided. Many aspects of ATSC were patented , including elements of the MPEG video coding, the AC-3 audio coding, and the 8VSB modulation. [ 2 ]
Sales of TV Guide began to reverse course with the 4–10 September 1953, "Fall Preview" issue, which had an average circulation of 1,746,327 copies; by the mid-1960s, TV Guide had become the most widely circulated magazine in the United States. [9] Print TV listings were a common feature of newspapers from the late-1950s to the mid-2000s.
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[12] [9] Several new channels offering classic TV programming were launching or growing at the time. These included the Retro Television Network (RTN), started in 2005 by Equity Media Holdings as the first such service, [ 11 ] [ 13 ] and This TV , a film-aimed service run as a joint venture between Weigel Broadcasting and film studio MGM (now ...