Mobotix T24 Informacje Techniczne Pobierz pdf (Strona 112)

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T24 System Manual Part 2: MOBOTIX Glossary

www.mobotix.com • [email protected]

IP address

An IP address describes the address of a computer or device in an IP network. IP addresses

are used by all the computers/devices connected to a network to identify each other and

transfer data in both directions. Every IP address must be unique to the network in question

in order to prevent conﬂicts. IP addresses can be assigned as static addresses, meaning they

always remain the same, or they can be allocated dynamically (and automatically) via DHCP.

Each IP address consists of four groups (or quads) of decimal digits separated by periods,

such as 130.5.5.25. Each part of the address represents dierent types of information. One

part represents the network number or address; another represents the local computer’s

address.

IP Camera

An IP camera is a special type of video camera. This kind of camera diers from other

video cameras in that it forwards its images via IP networks. Network cameras also

include a computer in addition to the actual camera components. This built-in computer

compresses the image data and transmits it over the network. The computer basically

consists of a CPU, a ﬂash memory chip and a DRAM memory chip. The installed network

camera software enables the networked device to act as a web server or FTP server, and

also as an FTP client or e-mail client.

IP Network

Data network based on the Internet protocol (TCP/IP).

JPEG

Abbreviation for Joint Photographic Experts Group, responsible for the development of the

JPEG standard method for image compression. JPEG is the most common lossy image

format for photos on the Internet. Loss in image quality is barely noticeable at compression

rates lying between 60 and 99 percent.

LAN (Local Area Network)

A LAN consists of a group of computers and associated devices that share the same

communication resources within a physical space.

LED

Abbreviation for Light Emitting Diode. Refers to an electronic semiconductor component

built into MOBOTIX cameras and add-on modules that emits light when a current ﬂows

through the component in the correct direction.

Lighting

In general, a camera does not require any additional lighting for daylight operation. However,

some basic rules must be observed for use in the dark or under artiﬁcial light. A suitable

light source or support lighting system should be chosen based on whether the camera

is used for a general overview or for the exact identiﬁcation of persons and/or objects.

Lux

The standard unit for measuring light intensity.

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