A group of standard wireless specifications developed by the IEEE. It defines a wireless interface between devices to manage packet traffic and supports speeds up to 2Mbps.

The extension of 802.11, the wireless throughput boosts from the original 2Mbps of 802.11 up to 11Mbps.

The extension of 802.11b, it brings wireless throughput up to 54Mbps.

Image compression is used to reduce the file size (in bytes) of an image. There are several methods of image compression, such as JPEG and MPEG.

A process that divides each video frame into two fields. The odd numbered lines to be field one and all the even numbered lines to be field two.

Interlaced video uses two video fields to make a single frame of video.

Infrared radiation is a radiation of a wavelength longer than visible light, but shorter than microwave radiation. The color cameras can detect the infrared radiation by the heat and capture it.It will filter the infrared radiation by IR-cut filter and prevent the distortion.Under low illuminance or night, the cameras will remove the filter and allow infrared radiation to hit the image sensor and produce images.

Internet Protocol; is the main network layer protocol used on the Internet. It defines how information gets passed between systems across the Internet.

Internet Protocol address; is a unique number that devices use to identify and communicate with each other on a network, which uses the Internet Protocol standard.

The IP rating means that product is protected against the ingress of solid object and water. Many cameras or camera housings are designed for outdoor use, and therefore need to be waterproof. The first digital is the protection against solids, and the second digital is the protection against water. Refer to the above table for details;

E.g.,
IP66 - Total protected against dust and strong jets from all directions.
IP68 - Total protected against dust and long periods of immersion under pressure.

Infrared-radiation cut filer, is a color filter used in color CCD or CMOS, in order to block the infrared light and make the colors more realistic.

A kind of lens; used in the color cameras for detecting the Infrared radiation. See also Infrared (IR).

The circular aperture that controls the amount of light passing through to the camera's sensing element.

ISMA is a global alliance driving the integration of multimedia IPTV standards.

It's goal is: "To accelerate the adoption and deployment of open standards for streaming rich media content such as video, audio, and associated data, over Internet protocols."

One kind of VOP; is a complete image frame. See VOP.