Sony Ipela PCS-XC1 Operating Instructions Manual page 174

H.264
A video coding algorithm standardized by
the ITU-T in May 2003. This format realizes
high-quality picture via a lower bit rate. It
provides an equal picture quality via half as
low bit rate as the H.263 format. The H.264
format is also called as MPEG4 Advanced
Video Coding (AVC).
H.323
This enables communications on the
non-Qos (Quality of Service) LAN.
HD
An abbreviation for High Definition. High
Definition television provides a
high-resolution and high-quality picture.
There are 1080i, 1080p and 720P HD
formats.
HOP
Number of routers that have passed through
to reach the remote party.
ITU-T
An abbreviation for International
Telecommunication Union,
Telecommunications.
Lip synchronization
A function that synchronizes sound with
motion. Sound processing is much faster
than motion processing, thus sound and
motion sometimes get out of step with each
other.
P in P
An abbreviation for "Picture in Picture."
This is a function which allows you to
monitor your own party on a small window
on your TV monitor.
QoS
An abbreviation for Quality of Service. QoS
reserves a bandwidth for specific
communication in the network and
guarantees a given communication speed.
SIP
An acronym for Session Initiation Protocol.
SIP is a communication control protocol
used for Internet telephony, instant
messaging, etc.
174
Glossary
SNMP
An abbreviation for Simple Network
Management Protocol. This protocol is for
management information between the
management station and the managed
terminals. This enables the monitoring of
Sony Communication Systems.
SPID
An abbreviation for Service Profile ID.
Streaming
A technology that allows audio and video
data to be played back as it is downloaded
for real time viewing over a network, such as
the Internet.
TOS
Inputting the information data in the TOS
field of the IP address allows the unit to
judge the packet transmission priority, etc. It
also enables change of path according to the
types of service (Delay or Size).
WDR (View-DR)
A function that takes advantage of the
Exmor CMOS image sensor technology's
high-speed signal-readout capabilities and
combines it with the Visibility Enhancer
(VE) technology for light/dark contrast
correction to combine four images of
differing shutter speeds into a single frame.
This allows dramatically improved visibility
for light and darks areas of the image.