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  2. Indian-head test pattern - Wikipedia

    en.wikipedia.org/wiki/Indian-head_test_pattern

    The RCA Indian-head test pattern. The Indian-head test pattern is a test card that gained widespread adoption during the black-and-white television broadcasting era as an aid in the calibration of television equipment. It features a drawing of a Native American wearing a headdress surrounded by numerous graphic elements designed to test ...

  3. Test card - Wikipedia

    en.wikipedia.org/wiki/Test_card

    Test card. SMPTE color bars: common NTSC test pattern. PM5544: common PAL test pattern. EBU colour bars (4:3) A test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at sign-on and sign-off). [1]

  4. Rear-projection television - Wikipedia

    en.wikipedia.org/wiki/Rear-projection_television

    Rear-projection television (RPTV) is a type of large-screen television display technology. Until approximately 2006, most of the relatively affordable consumer large screen TVs up to 100 in (250 cm) used rear-projection technology. A variation is a video projector, using similar technology, which projects onto a screen.

  5. Root cause analysis - Wikipedia

    en.wikipedia.org/wiki/Root_cause_analysis

    In the field of science and engineering, root cause analysis (RCA) is a method of problem solving used for identifying the root causes of faults or problems. [1] It is widely used in IT operations, manufacturing, telecommunications, industrial process control, accident analysis (e.g., in aviation, [2] rail transport, or nuclear plants), medicine (for medical diagnosis), healthcare industry (e ...

  6. History of television - Wikipedia

    en.wikipedia.org/wiki/History_of_television

    History of television. Family watching TV, 1958. The concept of television is the work of many individuals in the late 19th and early 20th centuries. The first practical transmissions of moving images over a radio system used mechanical rotating perforated disks to scan a scene into a time-varying signal that could be reconstructed at a ...

  7. Analog television - Wikipedia

    en.wikipedia.org/wiki/Analog_television

    Once the screen has been scanned, the beam returns to the beginning of the first line. Close up image of analog color screen. A cathode-ray tube (CRT) television displays an image by scanning a beam of electrons across the screen in a pattern of horizontal lines known as a raster. At the end of each line, the beam returns to the start of the ...

  8. Television interference - Wikipedia

    en.wikipedia.org/wiki/Television_interference

    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 ...

  9. This compact soundbar is getting rave reviews from shoppers ...

    www.aol.com/lifestyle/this-compact-soundbar-is...

    Setting up the Majority Bowfell TV Soundbar is easy: Just plug it into your TV's RCA or optical digital port and you're good to go. It also has a USB port and Bluetooth capabilities, so you can ...