Axis 2400+ Manuale Utente Pagina 1

Network Video Solutions Technical GuideREMOTEPC PC PCCAMERASGATEWAYSWITCH MODEMMODEMINTERNETOFFICEHOMECAMERAPC

8A security guard who has been alerted to a break-in in a building, can get a view of the room where the break-in has occurred by checking video ima

9A PPLICATIONS

10Remote monitoring in retailBy installing an xDSL connection and adding some network video equipment it is possible to monitor a shop,

11Network video in offi cesA network camera is a useful tool at the offi ce. You can use it, for example, to keep track of who has been in the server ro

12Stimulate the viewers’ interest by broadcasting live video from network weather cameras. Publish live images and sound of a bustling cit

13About Angelfi reAngelfi re’s free Web hosting service accommodates image uploading via FTP and authorizes image over-writing (which is nec

14• Check that it worked by connecting to http://www.angelfi re.com/art/buffalo The Web page you made should now be seen. The image will not be shown,

15As all modern computers have network support and a Web browser installed when you purchase them, network cameras are easy to get up an

16External I/O devicesNetwork video products may be confi gured to drive industrial relays and other devices via their I/O ports. The picture on

17Applications that display several cameras at the same time are easy to design. To grasp the basics, just refer to one of the many books about using

About Axisvideo productsAxis was founded 1984 in Lund, Sweden. Axis currently has more than 300 employees and subsidiaries in 14 countries all over th

18Axis network video products support two different types of embedded scripting: shell scripts and PHP3 scripts. Whereas PHP3 programm

19U SER INTERFACEMilestone Systems A/SXprotect Business - Advanced surveillance for 1-64 cameras. High performance database, audio record

20A password can be used to restrict the level of access to the camera so that only specifi c individuals or groups have full access to the images

21The quality of the computer displaying the images is always important. It should be confi gured to display at least 16 bits color.Here are so

22Always use auto iris lenses with outdoor cameras. They adjust the amount of light that reaches the image sensor. This will give the camera be

23When using a camera outdoors, avoid viewing too much ‘sky’. Due to the contrasting light, cameras auto-matically adjust themselves to achieve

24• CS-mount. The distance between the sensor and the lens should be 12.5 mm• C-mount. The distance between the sensor and the lens should be 1

25IrisThe role of the iris is to adjust the amount of light passing through the lens. There are three different types of irises on lenses:•

26Determining factorsThe major factors effecting image quality for cameras can be defi ned as follows:• The lens• The optical fi lter• The image sensor

27The raw image data from an image sensor must be processed in order to achieve a good image, i.e. the color must be trimmed, the e

C ONTENTThe state of network video solutions 2What is a network camera? 6What is a video server? 7Security surveillance 8Remote monitoring 10Broa

28Hi-fi audio is included in the standards for MPEG-1/MPEG-2/MPEG-4. This means you can get high-quality stereo sound synchronized with the vi

29The size of digital images is measured in kilo Bytes. Digital images can be stored on a computer hard disk, the capacity for which is

30Conversion examplesThe table below shows the approximate number of horizontal lines for different image resolutions:512x492 pixel = 330 Hori

31Low compression, fi le size 45 kB.Medium compression, fi le size 27 kB.High compression, fi le size 14 kB.I MAGE QUALITYExamples of JPEG images taken

32Many compression standards to choose fromCameras using still image standards send single images over the network. Cameras using video standards send

33Compression standards for videoMotion JPEGWith motion JPEG, each frame within the video is stored as a complete image in the JPEG format. Th

34NB. Several network video products use low-quality compression technique (e.g. H.263) packed as MPEG 4. Study the video quality, an

35Within buildings, a 100 Mbit Ethernet network is ideal. It is fast and, due to its popularity, relatively cheap.100 Mbit Ethernet is normally t

36T1 connectionSometimes referred to as a ‘DS1 line’, a T1 connection is a dedicated phone line that supports data rates up to 1.544 Mbit/sec. For a

37The Power over LAN Active Splitter means that current Network Video Products can receive power over the network by splitting Ethernet and Power c

2Axis’ unique chipset designWhen product development fi rst began, Axis needed to create its own unique chipset in order to produce a high performance

38In a modern offi ce, computers are most likely to be connected through Ethernet, via a Local Area Network (LAN), or a Wireless LAN. Ethernet

39IP addressesEach device on a LAN (Local Area Network) must have a unique address. This is commonly called the ‘IP address’, and is occasiona

40DHCP serversIt takes time to administer the IP addresses for large numbers of devices on a network. To reduce this administration

41N ETWORK BASICS

42AXIS 2100 Network Camera • Indoor network camera• High-quality JPEG images• CCD sensor technology• Resolution 640x480 pixel• 4 mm standard CS m

43AXIS 2130 Network Camera• All in one integrated Pan/Tilt/Zoom camera solution• Auto focus for ease of use and quick access to the objects• 16x op

44AXIS 2400+ Video Server• Accommodates up to 4 video sources using 4 video decoders for fast switching• High-quality JPEG images (quality is depend

45AXIS 2490 Serial Server• Connects legacy serial devices with no Ethernet port directly to the network• Includes built-in Web server• 10/100 Mbit

46AXIS Camera Explorer softwareInstalled in a PC or Pocket PC, AXIS Camera Explorer (ACE) is a low-end software package that allows video to be viewed

47AGC (Gain Control) Adjusts the exposure gain to get good light level in the image, only used during very poor light conditions, disadvantage is nois

3Traditional CCTV installationsTraditional surveillance (CCTV) cameras are usually connected to a monitor, using dedicated coaxial cabling. Where

48MPEG (Moving Picture Experts Group)MPEG, the Moving Picture Experts Group, develops standards for digital video and digital audio compre

Legal considerationsLaws regarding the use of camera surveillance vary from country to country may prohibit camera surveillance, so check your local l

20200/EN/R1/0303www.axis.comCORPORATE HEADQUARTERSSWEDENPhone: +46 46 272 18 00AUSTRALIA:Phone: +61 3 9225 5244BENELUX:Phone: +31 10 444 34 34CHINA:Ph

4Why use network video technology?Remote accessibilityYou can access up-to-the-second images at any time from any computer anywhere. The images

5I NTRODUCTION

6A network camera has its own IP address. It is connected to the network and has built-in software for a Web server, FTP server, FTP client,

7By utilizing the built-in serial ports of a video server you can control existing equipment such as Pan/Tilt/Zoom (PTZ) devices or time-