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Term
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Description
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G.dmt
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Splitter-based ADSL
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G.Lite (G.922.2)
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Universal DSL, also called "splitterless DSL." A version
of ADSL technology that does not require a POTS splitter to
be installed in the customer's home. A POTS splitter separates
voice from data transmission for simultaneous telephone and
data access use. G.Lite, a lightweight version of ADSL l supports
downstream data rates of up to 1.5 Mbps and upstream data
rates of up to 512 Kbps
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G2
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G2 is the name of the RealNetworks most recent audio/video
CODEC technology. The G2 includes several features targeted
specifically at streaming media applications including synchronization
with other media types such as video and graphics, and the
ability to handle data loss. According to RealAudio, the G2
Music Codec can handle packet loss up to 10-15% with minimal
reduction of audio quality.
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Galois Theory
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A branch of mathematics dealing with the general solution
of equations.
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Gate Array
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Simple type of ASIC used in creating small density semi-custom
designs by interconnecting fixed blocks of logic.
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GDI
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Graphical Device Interface: the native graphical language
of Windows. A GDI-compliant printer will print exactly what
is displayed on a Windows screen without having to transpose
it into a printer language. All the processing happens on
the PC. This helps reduce the price of the printer, since
image processing circuitry isn't needed.
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Geostationary
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Fixed orbit, approximately 36.000 km above the Earth´s equator.
Satellites parked in this orbit travel at the same speed as
the rotation of the Earth.
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GHz
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Gigahertz: A billion hertz.
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Gibb's Phenomenon
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A phenomenon that is observed when a rectangular pulse is
approximated by too few numbers of waveforms resulting in
a smudged nonrectangular version of the pulse.
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Gigabit
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One billion bit
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Glitch
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A situation where the outputs of a source device go active
while the inputs of a target device are receptive to signal
transitions. Here, it is possible for the outputs of a source
device to go from a high impedance state to High or Low logic
level, to cross the switching threshold of the inputs to the
target device thereby causing a false transition.
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GMSK
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Gaussian Minimum Shift Keying
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GPSI
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General Purpose Serial Interface
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Gray Scale
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Technique where shades of gray are synthesized using patterns
of black and white dots.
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Ground Bounce
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Noise on ground-plane causing false data at the device pins.
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GSM
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Global System for Mobile Communications
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GTL
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Acronym for Gunning Transceiver Logic. It is a high speed,
low power backplane standard.
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GUI
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Acronym for Graphical User Interface. A software interface
that is Windows based.
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