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- Number of terms: 20560
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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 set of outputs from a switcher or video recorder for the specific purpose of feeding video monitors (although not limited to that purpose). These include preview, individual M/Es, DSK, and bus rows. The AVC also provides monitor outputs for RGB signals, aux bus selections, and switcher status information.
Industry:Software
All of the machine states necessary to fully execute an instruction.
Industry:Software
A convenient linear scale for measuring, in arbitrary units, the relative luminance amplitudes within the scene to be recorded in a video or photographic image, as shown below. The relative luminance scale is one factor affecting the choice of suitably artistic scene reproduction. It may establish the optimum rendition of reference white and optimum employment of the nonlinear transfer function in image recording.
Note: This relative luminance scale (linear in luminance) resembles IRE units (linear in voltage) in positioning both black level reference and reference white at 0 and 100, respectively, but that it differs in recognising the extended luminance range of many commonly encountered scenes.
Industry:Software
A term used for editing and the storage of audio, video, and data. Information (footage) is available anywhere on the media (computer disc or laser disc) almost immediately without having to locate the desired information in a time linear format.
Industry:Software
As in a book library, it is somewhere one might keep effects, i.e., on a disc or collection of disks, hence a library of canned effects.
Industry:Software
The cable that connects the monitor to the workstation to provide power to the monitor. It has a male connector on one end and a female connector on the other.
Industry:Software
Unit that interprets the programme instructions into control signals for the rest of the system.
Industry:Software
A) When television was monochrome and sensors were in approximate conformance to CIE Photopic Spectral Luminous Efficiency Function, it became common to think of the video signal as the luminance signal. With the introduction of color, a matrix was designed to develop a luminance function by weighting the R, G, B signals in accordance with the CIE Photopic Spectral Luminance Efficiency Function, producing a video signal compatible with monochrome receivers. b) A signal that has major control of the image luminance. It is a linear combination of gamma-corrected primary colour signals. c) The specific ratio of colour primaries that provides a match to the white point in a specified colour space.
d) The definition of luminance, television is identical for NTSC, PAL, and SECAM (CCIR Report 624-4), as follows: E'Y = (0.299) E'R + (0.587) E'G + (0.014) E'B. The weighting function is named luminance signal in all of the television standards. For convenience and bandwidth conservation, however, it is always formed from the gamma correction signals (i.e., R', G', B') and not from the initial linear signals, and thus it is not an exact representation of luminance, physics.
Industry:Software
Amplitude dependent waveform distortions. This includes APL and instantaneous signal level changes. analogue amplifiers are linear over a limited portion of their operating range. Signals which fall outside of the linear range of operation are distorted. Nonlinear distortions include crosstalk and intermodulation effects between the luminance and chrominance portions of the signal.
Industry:Software
A light valve projector uses a bulb as the source of light. The valve technology changes the colour and intensity of the source to form the picture. Film or slide projectors are examples of light valve technology. The Digital Micro-Mirror Device (DMD) also known as the Digital Light Processor (DLP), the Image Light Amplifier (ILA), and LCD are all examples of electronic light valve technology. Obtaining black in a picture produced by a light valve projector requires the ability to shut the light off in particular areas of the picture. Shutting light off in a small area is actually rather difficult. Consequently, the real picture contrast ratio of a number of these projectors is rather poor.
Industry:Software
