At the minimum viewing angle the observer will see maximum unimpaired resolution, no pixels, scan lines or normal picture artifacts will be seen from this position. When moving closer to the display, pixels, scan lines and normal picture artifacts will now become progressively visible. When moving farther away from the display, perceived horizontal and vertical resolution will diminish progressively. Virtual Channel An aggregation of elementals, which can be recombined to suit particular viewers. Virus A program which replicates itself on computer systems by incorporating itself into other programs that are shared among computer systems.
Viruses vary, and can be harmless or completely debilitating to a computer system.
Device with a series of input selectors that permits one or more selected inputs to be combined, manipulated and sent out on the program line. It offers precise video frame identification during stopped or slow motion viewing and does not make use of an audio channel as in Longitudinal Time Code. Incorrectly transmitted bits are corrected through a series of logic decisions by way of the trellis diagram. VITS Optional signals stored in the vertical interval often used in broadcast transmissions. A device that is used in conjunction with CCTV cameras to detect movement within a specified area covered by the relevant camera.