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- Number of terms: 20560
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- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
Filtering at the camera or transmission end to eliminate vertical and temporal aliases. When a high line rate, progressively scanned camera is pre-filtered to NTSC rates, the resulting image is not only alias-free but can also be used by an advanced receiver to provide vertical and temporal resolution beyond that normally found in NTSC. The Kell factor of such a system can be close to one.
Industry:Software
The interpretation of impressions transmitted from the retina to the brain in terms of information about a physical world displayed before the eye. Note: Visual perception involves any one or more of the following: recognition of the presence of something; identifying it; locating it in space; noting its relation to other things; identifying its movement, color, brightness, or form.
Industry:Software
The level corresponding to the specified maximum excursion of the luminance signal in the white direction. Refer to the Horizontal Timing discussion.
Industry:Software
The SPL of a sound is equal to twenty times the logarithm (base 10) of the ratio of the root-mean-square sound pressure to the reference sound pressure. As a point of reference, 0 dBSPL equals the threshold of hearing, while 140 dB-SPL produces irreparable hearing damage.
Industry:Software
Switch back and forth from one state or value to another (i.e., on, off, on, off, etc.) by alternately opening and closing an electric circuit.
Industry:Software
The process whereby an area of the video raster is blocked or made non-transparent by controlling selected bits. Occlusion is used when more than one picture is displayed or windowed simultaneously.
Industry:Software
The output of the switcher which allows you to observe an effect before it is placed on-air. Also called Look Ahead Preview. This includes previewing keys.
Industry:Software
Graphics that roll from the bottom to the top of the screen, for example, end credits.
Industry:Software
A process which replaces distorted and missing sync information by checking incoming sync, analyzing the frequencies involved, and generating new fully restored sync.
Industry:Software
Sampling that occurs in every television signal due to individual frames (which sample in time) and individual scanning lines (which sample in the vertical direction). This sampling can cause aliases unless properly pre-filtered.
Industry:Software
