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  2. Refresh rate - Wikipedia

    en.wikipedia.org/wiki/Refresh_rate

    Refresh rate. The refresh rate, also known as vertical refresh rate or vertical scan rate in reference to terminology originating with the cathode-ray tubes (CRTs), is the number of times per second that a raster-based display device displays a new image. This is independent from frame rate, which describes how many images are stored or ...

  3. 480i - Wikipedia

    en.wikipedia.org/wiki/480i

    480i. SDTV resolution by nation: countries using 480i are in green. 480i is the video mode used for standard-definition digital video [1] in the Caribbean, Japan, South Korea, Taiwan, Philippines, Myanmar, Western Sahara, and most of the Americas (with the exception of Argentina, Paraguay, and Uruguay). The other common standard definition ...

  4. NTSC - Wikipedia

    en.wikipedia.org/wiki/NTSC

    NTSC. NTSC (from National Television System Committee) is the first American standard for analog television, published and adopted in 1941. [1] In 1961, it was assigned the designation System M. It is also known as EIA standard 170. [2] In 1953, a second NTSC standard was adopted, [3] which allowed for color television broadcast compatible with ...

  5. Utility frequency - Wikipedia

    en.wikipedia.org/wiki/Utility_frequency

    The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.

  6. 1080i - Wikipedia

    en.wikipedia.org/wiki/1080i

    1080i. 1080i is a term used in high-definition television (HDTV) and video display technology. It means a video mode with 1080 lines of vertical resolution. The "i" stands for interlaced scanning method. This format was once a standard in HDTV. It was particularly used for broadcast television. This is because it can deliver high-resolution ...

  7. 525 lines - Wikipedia

    en.wikipedia.org/wiki/525_lines

    525-line (or EIA 525/60) is an American standard-definition television resolution used since July 1, 1941, [1][2][3] mainly in the context of analog TV broadcast systems. It consists of a 525-line raster, with 480 lines carrying the visible image at 30 interlaced frames per second. It was eventually adopted by countries using 60 Hz utility ...