Glossary:

ATIS Telecom Glossary

Search Keyword By: S

Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

SBC

Session Border Control

scalability

1. The degree to which video and image formats can be sized in systematic proportions for distribution over communications channels of varying capacities. [After SMPTE]
2. The ease with which software can be transferred from one graduated series of application platforms to another [POSIX.0].

scan

1. To examine sequentially, part by part.
2. To examine every reference in every entry in a file routinely as part of a retrieval scheme.
3. In radar, one complete rotation of the interrogating antenna.
4. In SONAR, to search 360° or a specific search sector by the use of phased array of transducers.
5. To sweep, i.e., rotate, a… (Read More →)

scan line

1. The line produced on a recording medium frame by a single sweep of a scanner. [JP1]
2. Synonym scanning line.

scan-stop lockup

In automatic link establishment (ALE) radios, the undesired condition in which the normal process of (a) scanning radio channels, (b) stopping on the desired channel, or (c) returning to scan is terminated by the equipment.

scanner

1. In computer graphics, a device that sequentially samples and records digitally the color and intensity of successive elements of an object or image (e.g., a flat, paper object such as a photograph or drawing), for digital storage, transmission, or processing.
Note: The collected data are usually stored in one of several computer graphics formats.
2. In television technology, a… (Read More →)

scanning

1. In telecommunications systems, examination of traffic activity to determine whether further processing is required.
Note: Scanning is usually performed periodically.
2. In television, facsimile, and picture transmission, the process of successively analyzing the colors and densities of the object according to a predetermined pattern.
3. The process of tuning a device through a predetermined range of frequencies in prescribed… (Read More →)

scanning direction

In facsimile transmitting equipment, the scanning of an object, such as a message surface or the developed plane in the case of a drum, along parallel lines in a specified pattern.
Note 1: The scanning direction is equivalent to scanning over a right-hand helix on a drum.
Note 2: The orientation of the message on the scanning plane will depend… (Read More →)

scanning field

In facsimile systems, the total of the areas that are actually explored by the scanning spot during the scanning of the object by the transmitter or during scanning of the record medium by the receiver. [From Weik '89]

scanning line

In an imaging system, the path traversed by a scanning spot during a single line sweep.

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