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JVC Videosphere displayed at the Geffrye Museum. Top of the Videosphere showing the chain handle and channel dial. The Videosphere is a JVC CRT television that was shaped in the form of a space helmet. It was first introduced in 1970 and was sold up until the early 1980s.
JVC: 1976 present Kenmore: 2015 2017 Kent Television: 1951 1964 Kloss Video: 1981 - Kogan: 2006 present Kolster-Brandes - - Konka: 1984 present Lanix - - Le.com - - LG Electronics (founded as GoldStar, name changed 1995) 1958 present Loewe : 1923 present Luxor - - Magnavox: 1948 present Brand is a subsidiary of Philips since 1976 Marantz: 1992 ...
In 1975, JVC introduced the first combined portable battery-operated radio with inbuilt TV, as the model 3050. The TV was a 3-inch (7.6 cm) black-and-white CRT. One year later, JVC expanded the model to add a cassette recorder, as the 3060, creating the world's first boombox with radio, cassette and TV. [citation needed]
As a result of these size limitations, rear projection systems became popular [8] [9] as a way of producing television sets with a screen size larger than 12 inches. [10] Using a 3 or 4 inch monochrome CRT driven at a very high accelerating voltage for the size (usually 25,000 volts [11] though RCA did produce a larger five inch tube that ...
Sony would go on to receive an Emmy Award from the National Academy of Television Arts and Sciences for its development of flat screen CRT technology. [3] Initially introduced on their 32 and 36 inch models in 1998, the new tubes were offered in a variety of resolutions for different uses.
The diagonal screen size of a CRT television is limited to about 100 cm (40 in) because of size requirements of the cathode-ray tube, which fires three beams of electrons onto the screen to create a viewable image. A large-screen TV requires a longer tube, making a large-screen CRT TV of about 130 to 200 cm (50 to 80 in) unrealistic.
Initially introduced on their 27, 32 and 36 inch models in 1998, the new tubes were offered in a variety of resolutions for different uses. The basic WEGA models supported normal 480i signals, but a larger version offered 16:9 aspect ratios. The technology was quickly applied to the entire Trinitron range, from 13 to 36 inch.
The KV-25XBR, circa 1985, is a 25" CRT monitor that shipped with two external 2-way speakers that could hang on the sides of the TV. It features a 4:3 aspect ratio and standard definition. KV-36XBR series (1990s to early 2000s) - 4:3 CRT with more than standard definition but less than high definition resolution, also available in 32" and 40 ...