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  2. Cable television - Wikipedia

    en.wikipedia.org/wiki/Cable_television

    A cable channel (sometimes known as a cable network) is a television network available via cable television. Many of the same channels are distributed through satellite television . Alternative terms include non-broadcast channel or programming service , the latter being mainly used in legal contexts.

  3. Analog television - Wikipedia

    en.wikipedia.org/wiki/Analog_television

    Analog television is the original television technology that uses analog signals to transmit video and audio. [1] In an analog television broadcast, the brightness, colors and sound are represented by amplitude , phase and frequency of an analog signal.

  4. Broadcast television systems - Wikipedia

    en.wikipedia.org/wiki/Broadcast_television_systems

    Analog television system by nation Analog color television encoding standards by nation. Every analog television system bar one began as a black-and-white system. Each country, faced with local political, technical, and economic issues, adopted a color television standard which was grafted onto an existing monochrome system such as CCIR System M, using gaps in the video spectrum (explained ...

  5. Computer network diagram - Wikipedia

    en.wikipedia.org/wiki/Computer_network_diagram

    A sample network diagram Readily identifiable icons are used to depict common network appliances, e.g. routers, and the style of lines between them indicates the type of connection. Clouds are used to represent networks external to the one pictured for the purposes of depicting connections between internal and external devices, without ...

  6. Television channel - Wikipedia

    en.wikipedia.org/wiki/Television_channel

    A television channel, or TV channel, is a terrestrial frequency or virtual number over which a television station or television network is distributed. For example, in North America , channel 2 refers to the terrestrial or cable band of 54 to 60 MHz , with carrier frequencies of 55.25 MHz for NTSC analog video ( VSB ) and 59.75 MHz for analog ...

  7. ATSC standards - Wikipedia

    en.wikipedia.org/wiki/ATSC_standards

    Advanced Television Systems Committee (ATSC) standards are an international set of standards for broadcast and digital television transmission over terrestrial, cable and satellite networks. It is largely a replacement for the analog NTSC standard — like that standard — is used mostly in the United States , Mexico , Canada , South Korea ...

  8. Cable television in the United States - Wikipedia

    en.wikipedia.org/wiki/Cable_television_in_the...

    Cable television programming is often divided between basic and premium television. Basic cable networks are generally those with wide carriage on the lowest service tiers of multichannel television providers. In the era of analog cable television, these channels were typically transmitted without any encryption or other

  9. Digital television transition - Wikipedia

    en.wikipedia.org/wiki/Digital_television_transition

    Flanders switched off analog television on 3 November 2008, while in Wallonia, all analog services were switched off on 1 March 2010, making the country completely serviced by a digital signal. However, analog cable is still used by many cable subscribers, so therefore a cable switchover is unlikely to happen in the near future.