VCS VideoJet 8000, Руководство пользователя

Страница: 138 / 148

Appendix Chapter 8
138 VideoJet 8000
Local area network A communications network serving users within a limited
geographical area, such as a building or a university campus.
It is controlled by a network operating system and uses a
transfer protocol.
MAC Media Access Control
MPEG-2 Enhanced video/audio compression standard, with high-level
compression that images of studio quality possible. In the
meanwhile it has become established as a broadcasting
standard.
netmask A mask that explains which part of an IP address is the
network address and which part comprises the host address.
It is usually written in dotted decimal notation with periods
separating the bytes, for example "255.255.255.192".
Network Time Protocol A protocol or application service for synchronizing computer
clocks over the Internet
NTP See Network Time Protocol
parameters Values used for configuration
picture A video image that has been digitized at a given resolution
PPP See point-to-point protocol
point-to-point protocol A protocol allowing a computer using TCP/IP to connect
directly to the Internet
QCIF Quarter CIF, a video format with 176 × 144 pixels
RS232/RS422/RS485 Standards for serial data transmission
Realtime Transport
Protocol A transmission protocol for realtime video and audio
RTP See Realtime Transport Protocol
SNMP Simple Network Management Protocol
subnet mask See netmask
TCP Transfer Control Protocol
Telnet Login protocol with which users can log on to a remote
computer (host) on the Internet
UDP User Datagram Protocol
URL Uniform Resource Locator
UTP Unshielded Twisted Pair
WAN See wide area network
wide area network A long distance link used to extend or connect remotely
located local area networks