c able television (CATV) was known originally as "community antenna television." Today it represents the broad area of entertainment and other services carried over coaxial cable networks to various subscribers, As implied by the name, the original purpose of CATV was to serve communities with entertainment television service where TV reception was poor, The idea was to find one good receiving ...

Television is currently undergoing a major transformation. The old analog standards are being replaced by new digital standards, widely perceived to be technologically superior. Digital television (DTV) makes possible the delivery of a signal virtually free of interference, with better image and audio quality, and improved interactivity. In addition, data compression technologies allow for a mo...

In March 1998, WFAA-TV in Dallas became the first television station in the United States to venture into the future of digital broadcasting. But as the broadcast signal went into the airwaves, medical telemetry units on the 13th floor at nearby Webb Roberts Hospital at Baylor University Medical Center went blank. It was 24 hours before engineers at the television station and Baylor put 2 and 2...

Field tests of the transmission performance of the ATSC DTV system have been conducted in Taiwan. The test results as well as comparisons against the NTSC system performance are reported and analyzed. From the measured results the reception characteristics of the DTV can be deduced and can provide guidelines for television stations to design transmission system, schedule equipment deployment, p...

establishing and operating private radio and television and its possible activity beside state radio and television is the selective method of administering radio and television in many countries worldwide. in legal system of iran, state run radio and television in article 44 of the constitution and interpretation of guardian council of mentioned article, establishing private radio and televisi...

1 F rom the day most television stations first signed on, nearly all eyes at the stations focused on one channel. In control rooms, studios and transmitters, engineers constantly monitored video quality in real time. Professional video picture monitors were often used for critical observation. Trained and licensed broadcast engineers used calibrated waveform monitors and displays to necessarily...

Digital Television, also known as Digital TV, is the most significant advancement in television technology since the medium was created over a century ago. Digital TV offers consumers more choice and makes the viewing experience more interactive. The analog system of broadcasting television has been in place for well over 60 years. During this period, viewers experienced the transition from bla...

The first of these articles deals with oxide-coated cathodes designed to be loaded with current densities several times higher than ordinary oxide-coated cathodes can withstand, and which yet have a life of a few thousand hours. Although these new cathodes cannot rival the L type of dispenser cathode as regards their permissible current density, they are cheaper and have a lower operating tempe...