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The transition to the latter is often called the standard-definition television switch-off. In most territories worldwide, the complete shutdown of the lower-resolution signals has not yet begun or is still in its early stages, notably in the many countries still undergoing the analogue switch-off .
The switch-off was noticed by few, since the overwhelming majority receive TV via cable and only around 74,000 households relied on terrestrial over-the-air broadcasts. [2] The switch-off was helped greatly as cable continued to use analog distribution, and thus consumers' old tuners continued to be useful.
The first TV accessory with which owners could actively influence the content displayed on the screen in real time was the Magnavox Odyssey, the first commercial home video game console, released in September 1972 by Magnavox for a list price of $99.95.
It was not until the 1990s that digital TV became a real possibility. [7] Digital television was previously not practically feasible due to the impractically high bandwidth requirements of uncompressed video, [8] [9] requiring around 200 Mbit/s for a standard-definition television (SDTV) signal, [8] and over 1 Gbit/s for high-definition ...
High-definition television (HDTV) in the United States was introduced in 1998 and has since become increasingly popular and dominant in the television market. Hundreds of HD channels are available in millions of homes and businesses both terrestrially and via subscription services such as satellite , cable and IPTV .
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The term high definition once described a series of television systems first announced in 1933 [1] and launched starting in August 1936; [5] however, these systems were only high definition when compared to earlier systems that were based on mechanical systems with as few as 30 lines of resolution. The ongoing competition between companies and ...