Thompson ViBE EM4000, Руководство пользователя

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Glossary
246 ViBE EM4000 — Release 1.10
User Manual — 46073586AB02
TCP Transmission Control Protocol.
One of the main protocols in TCP/IP networks. TCP enables two hosts to
establish a connection and exchange streams of data. TCP guarantees
delivery of data and packets, that
will be delivered in the same order in
which they were sent. While IP takes care of handling the actual delivery
of the data, TCP takes care of keeping track of the individual units of data
(called packets) that a message is divided into for efficient routing through
the Internet.
TCP / IP Transmission Control Protocol/Internet Protocol
Two interrelated protocols that are part of the Internet protocol suite. TCP
operates on the OSI transport layer and breaks data into packets. IP
operates on the OSI network layer and routes the packets. While IP takes
care of handling the actual delivery of the data, TCP takes care of keeping
track of the individual units of data (called packets) that a message is
divided into for efficient routing through the Internet. TCP/IP allows the
construction of very large networks with little central management.
TDT Time and Date Table.
A mandatory Digital Video Broadcast (DVB) SI table that supplies the
Coordinated Universal Time (UTC) time and date.
Time-Code A sequence of numeric codes generated at regular intervals by a timing
system.
Time-stamp A sequence of characters, denoting the date and/or time at which a certain
event occurred.
Timeslicing Time slicing is a technique that is used in DVB-H applications to increase
the battery life time of mobile DVB-H receivers (for instance cell phones,
PDAs, etc.). Chunks of data will be transmitted in bursts, which allows the
mobile receiver to be switched off when no data is transmitted. During this
inactivity the mobile receiver can scan neighboring cells in order to select
the best reception conditions and be prepared for seamless handovers.
TOT Time Offset Table.
An optional (DVB) SI table that supplies the actual UTC-time also including
time offset information coded as MJD.
TS Transport Stream.
A multiplex of several Elementary Streams that are contained in packets.
TSDT Transport Stream Descriptor Table.
A mandatory MPEG-2 PSI table that describes which type of Transport
stream it is in (i.e. DVB, ATSC etc.). It may also contain other descriptors.
TVCT Terrestrial Virtual Channel Table (ATSC).
UDP User Data Protocol.
A connectionless protocol, like TCP, that runs on top of IP networks. Unlike
TCP/IP, UDP/IP provides very few error recovery services, offering instead
a direct way to send and receive datagrams over an IP network without
acknowledgement for guaranteed delivery.
Unicast Unicast is communication between a single sender and a single receiver
over a network.
UTC Coordinated Universal Time.
UTC is the time standard by which the world regulates clocks and time. In
casual use, UTC corresponds to Greenwich Mean Time (or GMT).