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Axis 214 PTZ [47/53] Glossary of terms
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47
AXIS 214 PTZ
Glossary of Terms
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.
AF (Autofocus) - A system by which the camera lens automatically
f
ocuses on a selected part of the subject.
Angle - The field of view, relative to a standard lens in a 35mm still
c
amera, expressed in degrees, e.g. 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.
ARP (Address Resolution Protocol) - This protocol is used to
a
ssociate 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.
ARTPEC (Axis Real Time Picture Encoder) - A chip designed by
A
xis for image compression. ARTPEC supports a range of CCD and
CMOS sensors, built-in functionality for sharpening, backlight
compensation, noise reduction and white balance, support for
multiple Motion-JPEG streams, support for MPEG-4 part 2, up to 30
frames/second from 4 simultaneous video sources and real-time
compression of up to 45 Megapixels/second.
ASIC (Application Specific Integrated Circuit)
- A circuit designed
for a specific application, as opposed to a general purpose circuit,
such as a microprocessor.
Aspect ratio - A ratio of width to height in images. A common aspect
ra
tio used for television screens and computer monitors is 4:3.
High-definition television (HDTV) uses an aspect ratio of 16:9.
Autoiris (or DC-Iris) - This special type of iris is electrically
c
ontrolled by the camera, to automatically regulate the amount of
light allowed to enter.
AVI (Audio Video Interleave) - A video format that supports
simultan
eous playback of audio and video.
Bitmap - A bitmap is a data file representing a rectangular grid of
p
ixels. It defines a display space and color for each pixel (or "bit") in
the display space. This type of image is known as a "raster graphic."
GIFs and JPEGs are examples of image file types that contain
bitmaps.
Because a bitmap uses this fixed raster method, it cannot easily be
re
scaled without losing definition. Conversely, a vector graphic image
uses geometrical shapes to represent the image, and can thus be
quickly rescaled.
Bit rate - The bit rate (in kbit/s or Mbit/s) is often referred to as
spe
ed, but actually defines the number of bits/time unit and not
distance/time unit.
Bluetooth - Bluetooth is an open standard for wireless transmission
o
f voice and data between mobile devices (PCs, handheld computers,
telephones and printers).
Bonjour - Also known as zero-configuration networking, Bonjour
e
nables devices to automatically discover each other on a network,
without having to enter IP addresses or configure DNS servers.
Bonjour is a trademark of Apple Computer, Inc.
Broadband - In network engineering terms, this describes
trans
mission methods where two or more signals share the same
carrier. In more popular terminology, broadband is taken to mean
high-speed data transmission.
CCD (Charged Coupled Device) - This light-sensitive image device
used
in many digital cameras is a large integrated circuit that
contains hundreds of thousands of photo-sites (pixels) that convert
light energy into electronic signals. Its size is measured diagonally
and can be 1/4”, 1/3", 1/2" or 2/3".
CGI (Common Gateway Interface) - A specification for
comm
unication between a web server and other (CGI) programs. For
example, a HTML page that contains a form might use a CGI program
to process the form data once it is submitted.
CIF (Common Intermediate Format) - CIF refers to the analog video
resolutions
352x288 pixels (PAL) and 352x240 pixels (NTSC). See
also Resolution.
Client/Server - Client/server describes the relationship between two
computer
programs in which one program, the client, makes a service
request from another program, the server, which fulfils the request.
Typically, multiple client programs share the services of a common
server program. A web browser is a client program that requests
services (the sending of web pages or files) from a web server.
CMOS (Complementary Metal Oxide Semiconductor) - A CMOS is a
wide
ly used type of semiconductor that uses both negative and
positive circuits. Since only one of the circuit types is on at any given
time, CMOS chips require less power than chips using just one type of
transistor. CMOS image sensors also allow processing circuits to be
included on the same chip, an advantage not possible with CCD
sensors, which are also much more expensive to produce.
Codec - In communications engineering, a codec is usually a
code
r/decoder. Codecs are used in integrated circuits or chips that
convert e.g. analog video and audio signals into a digital format for
transmission. The codec also converts received digital signals back
into analog format. A codec uses analog-to-digital conversion and
digital-to-analog conversion in the same chip.
Codec can also mean compression/decompression, in which
case it is
generally taken to mean an algorithm or computer program for
reducing the size of large files and programs.
Compression - See Imag
e Compression.
Contrast - Defines the degree of difference between the lightest and
darkest p
arts of an image or video stream.
DC-Iris - This special type of iris is electrically controlled by the
came
ra, to automatically regulate the amount of light allowed to
enter.
DHCP (Dynamic Host Configuration Protocol) - DHCP is a protocol
th
at lets network administrators automate and centrally manage the
assignment of Internet Protocol (IP) addresses to network devices in a
network.
DHCP uses the concept of a "lease" or amount of time that a given IP
address will be valid for
a computer. The lease time can vary,
depending on how long a user is likely to require the network
connection at a particular location.
DHCP also supports static addresses for e.g. computers running web
s
ervers, which need a permanent IP address.
DNS (Domain Name System) - DNS is used to locate and translate
Inte
rnet domain names into IP (Internet Protocol) addresses. A
domain name is a meaningful and easy-to-remember name for an
Internet address. For example the domain name www.example.com is
much easier to remember than 192.0.34.166. The translation tables
for domain names are contained in Domain name servers.
Domain Server - Domains can also be used by organizations who
wish
to centralize the management of their (Windows) computers.
Each user within a domain has an account that usually allows them
to log in to and use any computer in the domain, although
restrictions may also apply. The domain server is the server that
authenticates the users on the network.
Duplex - See Fu
ll-duplex.
Ethernet - Ethernet is the most widely installed local area network
technolog
y. An Ethernet LAN typically uses special grades of twisted
pair wires. The most commonly installed Ethernet systems are
10BASE-T and 100BASE-T10, which provide transmission speeds up
to 10 Mbps and 100 Mbps respectively.
ETRAX (Ethernet Token Ring AXIS) - Axis' own microprocessor.
Factory default settings - These are the settings that originally
applie
d for a device when it was first delivered from the factory. If it
should become necessary to reset a device to its factory default
Содержание
- About this document 2
- Australia 2
- Axis communications 2
- Canada 2
- Electromagnetic compatibility emc 2
- Europe 2
- Intellectual property rights 2
- Legal considerations 2
- Liability 2
- Quick user s guide 2
- Safety notice battery replacement 2
- Safety notices used in this manual 2
- Support 2
- Trademark acknowledgments 2
- Weee directive 2
- Table of contents 3
- Product description 5
- Accessing the camera 7
- Accessing the camera from a browser 7
- Setting the password for root 7
- Accessing the camera from the internet 8
- The live view page 8
- Pan tilt zoom controls 9
- Viewer controls 9
- Ptz control queue 10
- Audio stream types 11
- Video and audio streams 11
- Video stream types 11
- Axis media control 12
- How to stream mpeg 4 12
- Mpeg 4 protocols and communication methods 12
- Accessing the audio streams 13
- Audio transmission methods 13
- Other methods of accessing the video stream 13
- Other mpeg 4 clients 13
- Accessing the setup link from a browser 14
- Configuring the camera 14
- Video image settings 15
- Advanced camera settings 16
- Overlay image 16
- Mpeg 4 17
- Axis media control 19
- Basic audio settings 20
- Advanced audio settings 22
- Layout 23
- Live view config 23
- External video 25
- Html examples 25
- Advanced calibration 26
- Advanced ctrl panel 26
- Advanced limits 26
- Control queue 26
- Guard tour 26
- Preset positions 26
- Ptz configuration 26
- Axis 214 ptz 27
- Event configuration 27
- Event servers 27
- Event servers and enter the required information for the selected server type 27
- Event type a set of parameters describing how and when the axis 214 ptz should perform cer tain actions an event type may result in a single event or it may result in many all depending on how often the conditions governing its behavior are met triggered event type an event that is activated by a specific internal or external trigger condi tion for example by motion detection or by an external device such as a door switch or a sensor scheduled event type an event that runs at a pre programmed time action what occurs when the event triggers e g the upload of video images to an ftp server or email notification 27
- For details on each setting please refer to the online help available from each web page 27
- Notification messages 27
- Terminology 27
- This section describes how to configure the axis 214 ptz for alarm and handling the axis 214 ptz can be configured to perform certain actions when certain types of events occur 27
- When the setup is complete the connection can be tested by clicking the test button the connection test will take approximately 10 seconds 27
- Event types 28
- Motion detection 29
- Scheduled events 29
- Port status 30
- Security https 31
- Security ip address filter 31
- Security users 31
- System options 31
- Security 802 x 32
- Date time 33
- Network basic tcp ip settings 33
- Network advanced tcp ip settings 34
- Network socks 35
- Network qos quality of service 36
- Network smtp email 36
- Network snmp 36
- You can activate trap reporting enter the ip address of the management server and choose the trap community to use when sending a trap message to the management system 36
- Maintenance 37
- Network bonjour 37
- Network rtp mpeg 4 37
- Network upnp 37
- Ports devices i o ports 37
- Advanced 38
- Resetting to the factory default settings 38
- Support 38
- Connecting audio equipment 39
- Connections 39
- I o inputs and outputs 39
- Schematic connection diagram 39
- Checking the firmware 40
- Troubleshooting 40
- Updating the firmware 40
- Axis 214 ptz 41
- If you contact the axis support desk please help us resolve your problems by providing a server report a log file and a brief description of the problem 41
- Logs reports the log file records events within the unit since the last restart of the system and can prove a useful diagnostic tool for troubleshooting 41
- Support 41
- Support overview the server report contains important information about the server and its software as well as a list of the current parameters 41
- Symptoms possible causes and remedial actions 41
- Axis 214 ptz 42
- For further assistance please contact your reseller or check the product s support pages on the axis website at http www axis com techsup 42
- Axis 214 ptz 43
- Technical specifications 43
- Axis 214 ptz 44
- Axis 214 ptz 45
- General performance considerations 45
- High image resolutions and or lower compression levels result in larger images bandwidth affected access by large numbers of motion jpeg and or unicast mpeg 4 clients bandwidth affected simultaneous viewing of different streams resolution compression etc by many clients frame rate and bandwidth affected accessing both motion jpeg and mpeg 4 video streams simultaneously frame rate and band width affected heavy usage of event settings affects the cpu load frame rate affected enabled motion detection frame rate and bandwidth affected heavy network utilization due to poor infrastructure bandwidth affected viewing on poorly performing client pc lowers perceived performance frame rate affected access by large number of audio clients using full duplex mode bandwidth affected 45
- Ntsc ntsc aspect ratio corrected 45
- Optimizing your system 45
- Overlay settings and the help for file naming date time formats 45
- Pal pal aspect ratio corrected 45
- The axis 214 ptz ntsc delivers the following file sizes 45
- The axis 214 ptz pal delivers the following file sizes 45
- The following factors are among the most important to consider 45
- To do this special format strings are added as part of a text overlay simply add r average frame rate in fps and or b average bandwidth in kbps to the overlay 45
- To see the bandwidth and frame rate currently required by the video stream the axis 214 ptz provides a tool that can be used to display these values directly in the video image 45
- When setting up the camera it is important to consider how various settings and situations will affect performance some factors affect the amount of bandwidth the bit rate required others can affect the frame rate and some will affect both if the load on the cpu reaches its maximum this will also affect the frame rate 45
- Bandwidth 46
- Frame rates motion jpeg 46
- Frame rates mpeg 4 46
- Axis 214 ptz 47
- Glossary of terms 47
- Axis 214 ptz 48
- Axis 214 ptz 49
- Axis 214 ptz 50
- Axis 214 ptz 51
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