AirLive POE-100CAMv2 - Manual (Page 131)

AirLive POE100CAMv2 User’s Manual
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data that arrives at the gateway, and a switch, which furnishes the actual path in and out of the gateway
for a given packet.
GIF (Graphics Interchange Format) -
GIF is one of the most common file formats used for images in web pages. There are two versions of the
format, 87a and 89a. Version 89a supports animations, i.e. a short sequence of images within a single
GIF file. GIF89a can also be specified for interlaced presentation.
GOV (Group Of VOPs) -
A group of VOPs is the basic unit of an MPEG-4 video stream. The GOV contains different types and
numbers of VOPs (I-VOPs, P-VOPs, etc.) as determined by the GOV length and GOV structure. See
also VOP.
GOV length -
The GOV length determines the number of images (VOPs) in the GOV structure. See also GOV and
VOP.
GOV structure -
The GOV structure describes the composition of an MPEG-4 video stream, as regards the type of
images (I-VOPs or P-VOPs) included in the stream, and their internal order. See also GOV and VOP.
Half-duplex -
See Full-duplex.
HTML (Hypertext Markup Language) -
HTML is the set of "markup" symbols or codes inserted in a file intended for display in web browser. The
markup tells the browser how to display the page's words and images for the user.
HTTP (Hypertext Transfer Protocol) -
HTTP is the set of rules for exchanging files (text, graphic images, sound, video, and other multimedia
files) on the web. The HTTP protocol runs on top of the TCP/IP suite of protocols.
Hub -
A (network) hub is used to connect multiple devices to the network. The hub transmits all data to all
devices connected to it, whereas a switch will only transmit the data to the device it is specifically
intended for.
IEEE 802.11 -
A family of standards for wireless LANs. The 802.11 standard supports 1 or 2 Mbit/s transmission on the
2.4 GHz band. IEEE 802.11b specifies an 11 Mbit/s data rate on the 2.4 GHz band, while 802.11a allows
up to 54 Mbit/s on the 5 GHz band.
Image compression -
Image compression minimizes the file size (in bytes) of an image. Two of the most common compressed
image formats are JPEG and GIF.