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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
A tendency for blue phosphors to age more rapidly than red or green. See also Phosphor Aging.
Industry:Entertainment
Special effect (also called paint) which colors a monochrome or color image with artificial colors. This feature is found on both the Digital Video Mixer and Video Equalizer.
Industry:Entertainment
A state of reduced resolution. Blur can be a picture defect, as when a photograph is indistinct because it was shot out of focus or the camera was moved during exposure. Blur can also be a picture improvement, as when an unnaturally jagged-edged diagonal line or jerky motion is blurred to smoothness.
Industry:Entertainment
a) The tristimulus values of monochromatic stimuli of equal radiant power. The three values of a set of color-matching functions at a given wavelength are called color-coefficients. The colormatching functions may be used to calculate the tristimulus values of a color stimulus from the color stimulus function. b) The tristimulus value per unit wavelength interval and unit spectral radiant flux. c) A set of three simultaneous equations used to transform a color specification from one set of matching stimuli to another. Note: Color-matching functions adopted by the CIE are tabulated as functions of wavelength throughout the spectrum and are given in Section 13.5 of ANSI/IES RP16-1986.
Industry:Entertainment
In a single frame (spatial example), reducing the number of pixels per horizontal line, causes a blurring or smearing effect.
In multiple frames (temporal example), the causes become more complicated.
They may include reduction of bandwidth, degree of image movement, algorithm type, and motion prediction/compensation techniques.
Industry:Entertainment
A filter that can be used to separate luminance from chrominance in the NTSC or PAL composite video systems. The figure below shows a signal amplitude over frequency representation of the luminance and chrominance information that makes up the composite video signal. The peaks in gray are the chroma information at the color carrier frequency. Note how the chroma information falls between the luminance information that is in white. The comb filter is able to pass just energy found in the chroma frequency areas and not the luminance energy. This selective bandpass profile looks like the teeth of a comb and thus the name comb filter. The comb filter has superior filtering capability when compared to the chroma trap because the chroma trap acts more like a notch filter.
Industry:Entertainment
A tone perceived by the ear which is equal in frequency to the sum or difference of the frequencies of two loud tones that differ by more than 50 Hz.
Industry:Entertainment
A radio term, used to designate the process of gradually fading the volume of sound by means of a master fading control on the board.
Industry:Entertainment
Circuit arrangement in which the output state is determined only by the present states of two or more inputs. Also called Combinatorial Logic.
Industry:Entertainment
