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  2. Noise (video) - Wikipedia

    en.wikipedia.org/wiki/Noise_(video)

    Noise, static or snow screen captured from a blank VHS tape. Noise, commonly known as static, white noise, static noise, or snow, in analog video, CRTs and television, is a random dot pixel pattern of static displayed when no transmission signal is obtained by the antenna receiver of television sets and other display devices.

  3. History of television - Wikipedia

    en.wikipedia.org/wiki/History_of_television

    The earliest photograph of a television picture, showing the face of Oliver Hutchinson in June 1926. The television picture was projected using Baird's television camera. In 1927, Baird transmitted a signal over 438 miles (705 km) of telephone line between London and Glasgow. In 1928, Baird's company (Baird Television Development Company/Cinema ...

  4. Indian-head test pattern - Wikipedia

    en.wikipedia.org/wiki/Indian-head_test_pattern

    The Indian Head pattern as mentioned in Ziff Davis's Radio & Television News trade magazine in January 1949. Indian Head pattern with its elements labeled, describing the use of each element in aligning a black and white analog TV receiver. The Indian-head test pattern was created by RCA at their factory in Harrison, New Jersey. Each element of ...

  5. Digital television - Wikipedia

    en.wikipedia.org/wiki/Digital_television

    Digital television supports many different picture formats defined by the broadcast television systems which are a combination of size and aspect ratio (width to height ratio). With digital terrestrial television (DTT) broadcasting, the range of formats can be broadly divided into two categories: high-definition television (HDTV) for the ...

  6. Television interference - Wikipedia

    en.wikipedia.org/wiki/Television_interference

    Television interference (TVI) is a particular case of electromagnetic interference which affects television reception. Many natural and man-made phenomena can disrupt the reception of television signals. These include naturally occurring and artificial spark discharges, and effects due to the operation of radio transmitters.

  7. Cathode-ray tube - Wikipedia

    en.wikipedia.org/wiki/Cathode-ray_tube

    A CRT in a TV is commonly called a picture tube. CRTs have also been used as memory devices , in which case the screen is not intended to be visible to an observer. The term cathode ray was used to describe electron beams when they were first discovered, before it was understood that what was emitted from the cathode was a beam of electrons.

  8. Screen burn-in - Wikipedia

    en.wikipedia.org/wiki/Screen_burn-in

    Burn-in on a monitor, when severe as in this "please wait" message, is visible even when the monitor is switched off. Screen burn-in, image burn-in, ghost image, or shadow image, is a permanent discoloration of areas on an electronic visual display such as a cathode-ray tube (CRT) in an older computer monitor or television set.

  9. Television - Wikipedia

    en.wikipedia.org/wiki/Television

    It has the means to accelerate and deflect the electron beam(s) onto the screen to create the images. The images may represent electrical waveforms (oscilloscope), pictures (television, computer monitor), radar targets or others. The CRT uses an evacuated glass envelope that is large, deep (i.e., long from front screen face to rear end), fairly ...