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2. Flicker-free - Wikipedia

   en.wikipedia.org/wiki/Flicker-free

   Flicker-free is a term given to video displays, primarily cathode ray tubes, operating at a high refresh rate to reduce or eliminate the perception of screen flicker.For televisions, this involves operating at a 100 Hz or 120 Hz hertz field rate to eliminate flicker, compared to standard televisions that operate at 50 Hz (PAL, SÉCAM systems) or 60 Hz (), most simply done by displaying each ...

3. List of broadcast video formats - Wikipedia

   en.wikipedia.org/wiki/List_of_broadcast_video...

   Film and television companies use this rate in 50 Hz regions for direct compatibility with television field and frame rates. Conversion for 60 Hz countries is enabled by doing 2:2:3:2:3 pulldown. [5] This is similar to 2:3 pulldown, and the result looks identical to a typical film transfer. While 25p captures half the temporal resolution or ...

4. Why You Shouldn't Buy a TV on Black Friday - AOL

   www.aol.com/news/2014-11-26-dont-buy-tv-black...

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5. Scan conversion - Wikipedia

   en.wikipedia.org/wiki/Scan_conversion

   In a 100 Hz/120 Hz analog TV, there is a scan converter circuit which converts the vertical frequency (refresh rate) from standard 50/60 Hz to 100/120 Hz to achieve a low level of flicker which is important in large screen (high inch) TVs. An external TV card receives the TV signals and converts them to VGA or SVGA format to display on monitor.

6. Flicker (screen) - Wikipedia

   en.wikipedia.org/wiki/Flicker_(screen)

   A refresh rate of 60 Hz on most screens will produce a visible "flickering" effect. Most people find that refresh rates of 70–90 Hz and above enable flicker-free viewing on CRTs. Use of refresh rates above 120 Hz is uncommon, as they provide little noticeable flicker reduction and limit available resolution.

7. 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.