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Kell factor

The Kell factor, named after RCA engineer Raymond D. Kell, is a parameter used to limit the bandwidth of a sampled image signal to avoid the appearance of beat frequency patterns when displaying the image in a distinct display device, usually taken to be 0.7. The number was first measured in 1934 by Raymond D. Kell and his associates as 0.64 but has…

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PALScan lines576iAspect ratioPixels per line
8 related topics

Overview

RCARaymond D. KellParameterBandwidthImage signal
15 related topics

The beat frequency problem

Nyquist frequencyMoiré pattern
2 related topics

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The beat frequency problem

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Kell factor

Nodes29
Edges28
Triples39
Avg. degree1.93
Density0.068966
Components1

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Kell factor

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related to References · 17
Kell factor → Amanatides, Antialiasing, Broadcast Engineering, Feb, HDV, Interlaced Video Animation, July, Just What, May, Mullen, Revisiting Kell, Robin, SIGGRAPH, SMPTE Journal, The Television Scanning Process, Tonge, Work
related to Examples · 14
Kell factor → CCD, For, HDTV, Hz, Hz PAL, Kell, LCD, MHz, Since, Suppose, Taken, The, TV, Using
related to The beat frequency problem · 7
Kell factor → In, Moiré, Nyquist, The, The Kell, To, When
is a · 1
Kell factor → reduction necessary in signal bandwidth such that no beat frequency is perceived by the viewer

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kell factor resolution display signal used frequency number since distribution beat lines given vertical line sampled image scanning interlacing bandwidth

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Kell factoris areduction necessary in signal bandwidth such that no beat frequency is perceived by the viewer0.90text
Kell factorrelated to ExamplesHz PAL0.60section
Kell factorrelated to ExamplesSuppose0.60section
Kell factorrelated to ExamplesThe0.60section
Kell factorrelated to ExamplesTV0.60section
Kell factorrelated to ExamplesSince0.60section
Kell factorrelated to ExamplesUsing0.60section
Kell factorrelated to ExamplesKell0.60section
Kell factorrelated to ExamplesFor0.60section
Kell factorrelated to ExamplesHz0.60section
Kell factorrelated to ExamplesTaken0.60section
Kell factorrelated to ExamplesMHz0.60section

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