Search results
Results from the WOW.Com Content Network
The five main ATSC formats of DTV currently [when?] broadcast in the U.S. are: . Standard definition—480i, to maintain compatibility with existing NTSC sets when a digital television broadcast is converted back to an analog one [citation needed] —either by a converter box or a cable/satellite operator's proprietary equipment
Changes in signal reception from factors such as degrading antenna connections or changing weather conditions may gradually reduce the quality of analog TV. The nature of digital TV results in a perfectly decodable video initially, until the receiving equipment starts picking up interference that overpowers the desired signal or if the signal ...
Digital TV encoding allows stations to offer higher definition video and better sound quality than analog, as well as allowing the option of programming multiple digital subchannels (multicasting). However, it provides these advantages at the cost of a severe limitation of broadcast range. [citation needed]
1922: Charles Francis Jenkins' first public demonstration of television principles. A set of static photographic pictures is transmitted from Washington, D.C. to the Navy station NOF in Anacostia by telephone wire, and then wirelessly back to Washington; Philo Farnsworth first describes an image dissector tube, which uses cesium to produce images electronically.
Vietnamese TV stations started showing their digital on-screen graphical DOGs in 1995. Logos are not removed during commercial breaks, but remain in full-color, unlike their national counterparts in Indonesia (but note the local ones). A digital clock and program name may also be shown. Some cable channels show its cable provider logo and its logo.
The name Liam might be gaining popularity due to the success of "Hunger Games" actor Liam Hemsworth. Although these names top BabyCenter's list for 2014, all six actually topped its list in 2013, too.
The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is converted to and replaced by digital television.
The name of the broadcasting channel usually appeared in the space underneath the letter F—a sans-serif F denoting an original optical version of the test card. Originally, Test Card F was a photographic slide made up of two transparencies in perfect registration—one containing the colour information ( chrominance ) and the other the ...