Glossary:

ATIS Telecom Glossary

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doppler shift

The degree of observed change in frequency (or wavelength) of a wave due to the doppler effect.

DOT

Department of Transportation

dot pitch

1. Of a monitor screen, the physical size (width) of an individual tristimulus optoelectronic element (e.g., phosphor triad, stripe triad, LCD element), usually expressed in millimeters (e.g., "
0. 28 mm dot pitch"), in the direction of scanning.
Note: The width of one tristimulus optoelectronic element determines the maximum resolution of a monitor screen.
2. Of a dot-matrix printer, the… (Read More →)

dotted decimal notation

The syntactic representation for a 32-bit integer that consists of four 8-bit numbers written in base 10 with periods (dots) separating them.
Note: The dotted decimal notation is used to represent IP addresses in the Internet. [2382-pt.35]

double length key

A cryptographic key having a length of 112 bits plus 16 parity bits. [After X9.24]

double modulation

Modulation in which (a) a subcarrier is modulated with an information-bearing signal and (b) the resulting modulated subcarrier is then used to modulate another carrier that has a higher frequency.

double resolution still image

A still image transmitted in the standardized video stream encoded to twice the horizontal and twice the vertical resolution as the previous motion video (i.e., full common intermediate format (FCIF) or 4*FCIF). This mode uses bit 5 "Hi-Res" bit. [After T1.80
0. 09-1995]

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