Air Live POE-260 CAM, Руководство пользователя

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9. Technical Specification
AirLive POE-260CAM User’s Manual 148
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ActiveX -
A standard that enables software components to interact with one another in a
networked environment, regardless of the language(s) used to create them. Web
browsers may come into contact with ActiveX controls, ActiveX documents, and
ActiveX scripts. ActiveX controls are often downloaded and installed automatically as
required.
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AF (Autofocus) -
A system by which the camera lens automatically focuses on a selected part of the
subject.
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Angle -
The field of view, relative to a standard lens in a 35mm still camera, expressed in
degrees, for example, 30°. For practical purposes, this is the area that a lens can cover,
where the angle of view is determined by the focal length of the lens. A wide-angle lens
has a short focal length and covers a wider angle of view than standard or telephoto
lenses, which have longer focal lengths.
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ARP (Address Resolution Protocol) -
This protocol is used to associate an IP address to a hardware MAC address. A
request is broadcast on the local network to discover the MAC address for an IP
address.
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ASIC (Application Specific Integrated Circuit) -
A circuit designed for a specific application, as opposed to a general purpose circuit,
such as a microprocessor.
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Aspect ratio -
A ratio of width to height in images. A common aspect ratio used for television screens
and computer monitors is 4:3. High-definition television (HDTV) uses an aspect ratio of
16:9.
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Autoiris (or DC-Iris) -
This special type of iris is electrically controlled by the camera, to automatically
regulate the amount of light allowed to enter.
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AVI (Audio Video Interleave) -
A video format that supports simultaneous playback of audio and video.