User's Manual
276
Appendix 1 Glossary
Appendix Table 1-1 Glossary
Name Description
CGI
Common Gateway Interface (CGI) is an important Internet technology. With
CGI, client can ask data from program running on network server. CGI
describes data transmission standard between server and asking processing
program.
DDNS
Dynamic Domain Name System (DDNS) is to map the user dynamic IP
address to a specified domain analysis service. Each time, when the user
connects to the network, the client can transmit the host dynamic address
to the server application on the host of the service provider. The server
applications are to provide the DNS service and realize dynamic domain
analysis. That is to say, the user does not need to remember the changeable
IP address, just uses the domain name to login the device or the address.
DHCP
Dynamic Host Configuration Protocol (DHCP) is a network protocol in the
LAN. It is to automatically allocate IP address for the internal network or the
ISP (Internet service provider).It is to manage the computer IP address by
the unified means of management.
DNS
Domain Name System (DNS) is to save the all host domain name and
corresponding IP address in the network. It has the ability to change the
domain to the IP address.
DVR Digital Video Recorder.
FTP
File Transfer Protocol (FTP) is used to control bilateral transmission of file on
the Internet.
HDMI
High Definition Multimedia Interface (HDMI) is a special digital interface
suitable for audio/video transmission. It can transmit audio signal and video
signal at the same time.
HTTPS
Hyper Text Transfer Protocol over Secure Socket Layer (HTTPS) is a HTTP
channel for security purpose. The HTTPS has defined the browser the world
wide web service safety communication rule. It adopts encryption
technology to guaranty safety access to the webpage.
IP Internet Protocol.
IPC IP Camera.
NTP
Network Time Protocol (NTP) is a protocol to synchronize computer time. It
adopts wireless network protocol UDP, so that the computer time
synchronizes with the server or the time source. It is to provide time
correction of high accuracy.
NTSC
National Television Standards Committee, American national standard
television and broadcast transmission and receiving protocol. This is a
television standard that television scanning beam is 525 beams, 30 frames
per second, interlaced scanning, odd field first and then it is followed by
even field. NTSC is used in the United States of America, Japan, and so on.
NVR Network Video Recorder
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