Define CRT Television
CRT televisions, also known as direct-view televisions, utilize a single cathode ray tube for their viewing surface. CRT televisions were the first type of television sets to be commercially produced. The advent of plasma, LCD, LED, front projection and numerous other display technologies has dramatically reduced the demand for CRT televisions in the United States.
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History
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Karl Ferdinand Braun is credited with inventing the cathode ray tube (CRT). Earliest versions of the CRT tube were referred to as Braun tubes. The first commercially produced CRT was introduced by Western Electric in 1922, according to GizmoHighway.com.
According to the Federal Communications Commission (FCC), the first simultaneous, long distance television transmission of live voice and picture occurred on a April 9, 1927 (Bell Laboratories and the Department of Commerce conducted the event). By 1960, the FCC estimated 85 percent of American households had at least one CRT television set.
Function
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CRT television sets utilize a single cathode ray tube or vacuum tube, in which high-speed electron beams are emitted against a phosphorus surface on the viewing screen. The electrons excite the phosphors, causing them to emit light, thus re-creating the picture that is being broadcast.
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Features
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Most CRT televisions are manufactured to the standard television screen ration of 4:3. According to Practical-Home-Theater-Guide.com, some manufacturers are producing CRT televisions with the popular 16:9 ratio used in movie theaters. Most CRT televisions still feature a the traditional curved picture tube with rounded corners, but some high-end sets offer flat screens with square edges.
Benefits
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According to HDTVSolutions.com, CRT sets are among the easiest of all televisions to install. They only need to be plugged in and hooked up to an antenna or active cable line. CRT televisions are also capable of producing excellent picture quality when measured by black levels, color reproduction, contrast and shadow detail. CRT televisions perform well in all ambient light levels, offer excellent viewing angles without image distortion, require little maintenance and are typically much less expensive than a comparable plasma or LCD television at picture sizes smaller than 36 inches.
Considerations
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CRT televisions are much bulkier and much heavier than comparable plasma or LCD televisions. Large-screen CRT televisions are rare, and the cost for screens larger than 36 inches increases dramatically when compared to other formats. According to Practical-Home-Theater-Guide.com, new developments in CRT televisions include slimmer television sets with high definition capabilities.
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References
Resources
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