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  2. Broadcast signal intrusion - Wikipedia

    en.wikipedia.org/wiki/Broadcast_signal_intrusion

    A broadcast signal intrusion is the hijacking of broadcast signals of radio, television stations, cable television broadcast feeds or satellite signals without permission or licence. Hijacking incidents have involved local TV and radio stations as well as cable and national networks.

  3. List of defunct television networks in the United States

    en.wikipedia.org/wiki/List_of_defunct_television...

    MET TV - USA MET Network November 23, 2023 Launched on 28 December 1966. National Jewish Television Network: Joel Levitch Basic cable channel broadcasting from New York City. [7] Existed in the 1980s until at least some point in the 2000s. Network 1: Network Telephone Services Channel which allowed viewer participation through 800 and 900 phone ...

  4. Television encryption - Wikipedia

    en.wikipedia.org/wiki/Television_encryption

    The prevention of piracy on cable and satellite networks has been one of the main factors in the development of Pay TV encryption systems. The early cable-based Pay TV networks used no security. This led to problems with people connecting to the network without paying. Consequently, some methods were developed to frustrate these self-connectors.

  5. Test card - Wikipedia

    en.wikipedia.org/wiki/Test_card

    Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.

  6. Digital cable - Wikipedia

    en.wikipedia.org/wiki/Digital_cable

    In the 1990s, cable providers began to invest heavily in this new multi-channel digital TV technology to expand the number of channels and services available to subscribers. Increased competition and programming choices from direct-broadcast satellite services such as DirecTV , Dish Network , and PrimeStar caused cable providers to seek new ...

  7. Cable television - Wikipedia

    en.wikipedia.org/wiki/Cable_television

    Most cable companies require a set-top box (cable converter box) or a slot on one's TV set for conditional access module cards [2] to view their cable channels, even on newer televisions with digital cable QAM tuners, because most digital cable channels are now encrypted, or scrambled, to reduce cable service theft. A cable from the jack in the ...

  8. Cable television piracy - Wikipedia

    en.wikipedia.org/wiki/Cable_television_piracy

    Other ways of cable theft were using a cable TV converter box (also known as a descrambler or "black box") to steal all channels and decrypt pay-per-view events, whereas a normal converter would only decrypt the ones paid for by the customer. The cable companies could send an electronic signal, called a "bullet", that would render illegal ...

  9. Digital television transition - Wikipedia

    en.wikipedia.org/wiki/Digital_television_transition

    It is an involved process because the existing analogue television receivers owned by viewers cannot receive digital broadcasts; viewers must either purchase new digital TVs, or digital converter boxes which have a digital tuner and change the digital signal to an analog signal or some other form of a digital signal (i.e. HDMI) which can be ...