MicroNet SP5571HDC, Руководство пользователя

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CGI is the abbreviation of Common Gateway Interface. It is a standard
protocol for interfacing external applications with information servers, such
as HTTP or Web servers. A CGI program can be written in any language that
allows it to be executed on the system, such as: C/C++, PERL, Visual Basic
etc.
Compression
It is a process of encoding information while reducing the size of digital
signal.
D
D1
D1 is the so-called full resolution for TV specification. D1 refers to the
following resolution: 720x486 (NTSC) or 720x576 (PAL). It was one of
Sony’s first digitized videotape formats.
dB (Decibel)
This unit is used to measure sound level and also widely used in electronics,
signals and communication. A decibel is a logarithmic unit to describe a ratio
and measure the loudness, power, or strength of a signal.
DHCP
DHCP is the abbreviation of Dynamic Host Configuration Protocol. It is a
computer networking protocol used by devices (DHCP clients) to obtain
configuration information for operation in an Internet Protocol network. So
that it can communicate with other host computers. These addresses are
usually dynamic, so a connection cannot be obtained (or maintained) over
the open Internet. Use of both static IP addresses and dynamic DNS helps
establish a consistent connection.
DNS
DNS is the abbreviation of Domain Name Service/System/Server. This is an
Internet service that translates domain names into IP addresses.
DSP
DSP is the abbreviation of Digital Signal Processing. These chips can
compress video independent of the CPU, avoiding the need to draw