EPG
Electronic Program Guide is a digital guide to scheduled
broadcast television or radio programs, typically displayed
on-screen with functions allowing a viewer to navigate,
select, and discover content by time, title, channel, genre,
etc. by use of their remote control, a keyboard, or other
input devices such as a phone keypad.
Content can also be scheduled for future recording by a
personal video recorder (PVR). The on-screen information
may be delivered by a dedicated channel or assembled by
the receiving equipment from information sent by each
program channel.
eSATA
A variant of SATA meant for external connectivity with the
following characteristics: * Minimum transmit potential:
Range is 500-600 mV. * Minimum receive potential:
Range is 240-600 mV. * Identical protocol and logical
signaling (link/transport-layer and above), allowing native
SATA devices to be deployed in external enclosures with
minimal modification.
FEC
Stands for Forward Error Correction. This is a system of
error control for data transmission, whereby the sender
adds redundant data to its messages, also known as an
error-correction code. This allows the receiver to detect
and correct errors (within some bound) without the need
to ask the sender for additional data. The advantages of
forward error correction are that a back-channel is not
required and retransmission of data can often be avoided
(at the cost of higher bandwidth requirements, on
average).
HDMI
Stands for High-Definition Multimedia Interface. It is a
compact audio/video interface for transmitting
uncompressed digital data. HDMI connects digital audio/
video sources—such as set-top boxes, Blu-ray Disc
players, personal computers (PCs), video game consoles
(such as the PlayStation 3 and some models of Xbox
360), and AV receivers—to compatible digital audio
devices, computer monitors, and digital televisions. As an
uncompressed connection, HDMI is independent of the
various digital television standards used by individual
devices, such as ATSC and DVB, as these are
encapsulations of compressed MPEG video streams
(which can be decoded and output as an uncompressed
video stream on HDMI).
LNB
Stands for Low-Noise Block converter. This is the
(receiving, or downlink) antenna of what is commonly
called the parabolic satellite dish commonly used for
satellite TV reception. The LNB is usually fixed on or in
the satellite dish. The purpose of the LNB is to take a wide
block (or band) of relatively high frequencies, amplify
and convert them to similar signals carried at a much
lower frequency (called intermediate frequency or IF).
These lower frequencies travel through cables with much
less attenuation of the signal, so there is much more
signal left on the satellite receiver end of the cable. It is
also much easier and cheaper to design electronic circuits
to operate at these lower frequencies, rather than the very
high frequencies of satellite transmission.
PID
Stands for Packet Identifier. This is a set of numbers
identifying stream packets contained within a single data
stream
Polarization
The orientation of the electrical and magnetic fields of a
signal. Satellites use mainly vertical and horizontal
polarization.
S/PDIF
Stands for Sony/Philips Digital Interconnect Format. A
common use for the S/PDIF interface is to carry
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