Glossary - Digisol DG-SC7369-18 User Manual

DG-SC7369-18 User Manual

5-3 Glossary

H.264: H.264 is the latest compression technology that significantly reduces the file size of
high-quality video images. Offers higher video resolution than Motion JPEG or MPEG-4 at the
same bit rate and bandwidth, or the same quality video at a lower bit rate.
PPPoE (Point-to-Point Protocol over Ethernet): Is a network protocol for encapsulating
Point-to-Point Protocol (PPP) frames inside Ethernet frames.
TCP / IP (Transmission Control Protocol/ Internet Protocol): TCP is used along with the Internet
Protocol (IP) to transmit data as packets between computers over the network. TCP is a
connection-oriented protocol, which means that a connection is established between the two
end-points and is maintained until the data has been successfully exchanged between the
communicating applications.
DDNS (Dynamic DNS): Used to create a fixed domain name for dynamic internet IP address. A
domain name is a meaningful and easy-to-remember name for an Internet address. Normally used
when the ISP has provided you with dynamic internet IP address to access the camera remotely.
SMTP (Simple Mail Transfer Protocol): SMTP is used for sending and receiving e-mail. SMTP
authentication is an extension of SMTP, whereby the client is required to log into the mail server
before or during the sending of email. It can be used to allow legitimate users to send email while
denying the service to unauthorized users, such as spammers.
UPnP (Universal Plug & Play): A set of computer network protocols that allow the automatic
peer-to-peer detection of devices on the network. Allows the discovery of UPnP- enabled devices in
a network environment.
RTSP (Real Time Streaming protocol): RTSP is a control protocol for Internet streaming of audio
and video. Mostly used for remote viewing of live or stored security camera video over the Internet.
RTSP can be considered as a "remote control" for controlling the media stream delivered by a media
server. RTSP servers typically use RTP as the protocol for the actual transport of audio/video data.
CMOS Sensor (Complimentary metal-oxide semiconductor): Is an image sensor available in
manyIP network cameras with less circuitry hence consumes less power, produces higher frame rate
& is less costly as compared to CCD sensors.
Frame Rate: The frame rate is used to describe the frequency at which a video stream is updated is
measured in frames per second (fps). If you want more accurate video then the frame rate should be
kept high. Lower the frame rate, lesser the image details.
47