This is a FAQ document for WebEye product. This document contains fully described Questions-and-Answers to make a help for you to resolve the problems in operating WebEye Product.
Q: What is WebEye?
A: WebEye is a Web camera server. WebEye is consisted of 3 components as CCD module, Web server, and networking device. WebEye captures, processes, and transmits digital images through network. As WebEye itself operates as a Web server, it does not require other dedicated server connection as PC does. By installing WebEye itself at the desired site, you may monitor views from remote site.
Q: What preparations are needed to install?
A: It needs no other equipment except power and network cable.
Q: Which algorithm is used to compress digital images?
A: WebEye uses Wavelet algorithm to compress digital images. Wavelet is still-image based compression algorithm. Still-image based refers to that WebEye does not capture motion pictures originally, but rather captures still pictures. JPEG, the standard algorithm in image compression, is also based on still-image. WebEye compresses and transmits very fast to present the still images as motion pictures. Process of still image compressing and transmission requires high technology. MPEG is another standard in image compression, but it is based on motion pictures originally.
Q: What is the difference between Wavelet algorithm and JPEG in compressing digital images?
A: Wavelet is more efficient than JPEG by 30-300%. Higher efficiency of Wavelet comes from its encoding method. Wavelet algorithm uses DWT(Discrete Wavelet Transform) while JPEG uses DCT(Discrete Consie Transform). Due to its efficiency, Wavelet is going to be adopted as standard in digital image compressing by JPEG2000.
Since Wavelet is not yet standardized, it requires to install Plug-in or Active-X control to see images through standard Web browsers as Netscape and I-Explore. The size of Plug-in or Active-X control is as big as 3 MB. And the size of 3MB needs quite a long time to download. Therefore, Wavelet is not used commonly. However, WebGate Inc. has developed Plug-in or Active-X control of 300KB to prevent inconvenient time consumption from waiting.
Q: Can WebEye support multi users with different resolutions at the same time?
Q: WebEye can support more than 100 users with different resolutions at the same time. Moreover, WebEye has progressive mode and gray mode to support low speed network line users. A user can monitor full resolution (720 X 486) color images while other user sees half resolution (360 X 243) B/W images. And the third user can see the images reproduced in progress mode at the same time.
Q: What is maximum transmission speed?
A: WebEye compresses and transmits 30 frames per second on 10 base-T Network. However this speed is not equal to every user. Because transmission is depends on performance of user¡¯s PC and network bandwidth. And there are two viewpoints to calculate transmission speed.
The maximum transmission speed is 30 frames per second from user's viewpoint. However, it does not mean that everyone can receive 30 frames peer second. Because, transmission speed also depends on user PC's performance and network line capacity. WebEye can transmit to up to 100 users simultaneously. If 5 users are receiving 10 frames per second, the total frames that WebEye to transmit are 50 frames per second. In this case, WebEye transmits 50 per second from its viewpoint. And the total size of 50 frames is under the network bandwidth. When WebEye is on 10 base-T network, the line can transmit 123 frames of 3KB-images per second
Q: What is maximum number of users to access WebEye at the same time?
A: Very unique compared to other products, WebEye supports up to 100 persons at the same time. Originally WebEye supports more than 100 persons; however, its capacity is fixed to 100 persons to supports already accessed users at rapid transmission speed. When 100 persons access WebEye, they can receive 1 frame per about 10 seconds.
Q: Does WebEye contain Pan/Tilt/Zoom function?
A: WebEye has pan/tilt/zoom controlling function in its software. When a pan/tilt mechanism and zoom lens are equipped to WebEye, you can change direction and zoom in/out through WebEye's homepage remotely. Existing pan and tilt mechanism and zoom lens can be connected to DB-15 port in the rear of WebEye.
Q: Is there any limitation on making ID or password?
A: Yes, there is a limitation and it is very important. You have to compose any ID or password within 9 bytes both for user and administrator account. 9 English characters are equal to 9 bytes.
Q: What network line is to be used?
A: All network lines can be used except a telephone line. In case you do use network lines of xDSL, cable modem, and ISDN that have dynamic IP addresses, the process of installing and accessing to WebEye is a bit different to dedicated line that has fixed IP address. However, user¡¯s PC can utilize telephone line without a doubt.
Q: What is maximum extension range of network lines?
A: UTP cable that is used for LAN can be extended up to 100 meters without bridging. However existing UTP cable can be extended up to 240 meters without bridging.
Q: Can the ordinary telephone line be used to WebEye?
A: Telephone line can be used to WebEye. But it is necessary to equip with a telephone modem router. WebGate Inc. will provide a telephone modem router in near feature. However, it is not efficient to use telephone line to receive images because transmission speed is very low.
Q: Is a special rack or case need when WebEye is installed outdoors?
A: WebEye itself is not weatherproof. Therefore, it is necessary to equip WebEye with weatherproof case if WebEye is installed outdoor, like existing CCTV.
Q: When the network is consisted with one permanent IP address and several private IP addresses, can WebEye be connected at the network with a private IP address?
A: WebEye is a Web server. WebEye can be assigned to with a private IP address. However WebEye should be designated as a local server.
A network that has a fixed IP address is normally equipped with a router and consists local network with various private IP addresses. In this case, all the devices connected on the local network are assigned with private IP addresses. However, all the devices communicate with remote devices using a fixed IP address. Router does convert private IP address into fixed IP address, and have local devices access to remote devices. This function is called as NAT(Network Address Translation).
When you configure a router, you can designate a local device as a local server among all the devices. And you have to key in WebEye¡¯s IP address in the blank for the local server address. Otherwise, you cannot access WebEye from remote network.
This case happens often when you install WebEye on a local network where a PC is already designated as proxy server.
Q: When the network is consisted with only private IP addresses, can WebEye be connected at the network?
A: WebEye can be connected to LAN having only private IP addresses as long as local users access WebEye. However the whole network can be down, if the network¡¯s equipment such as a hub is not acceptable to support all the devices appropriate. Especially, this situation occurs if a lot of WebEyes are connected on a network of narrow bandwidth.
Q: If a firewall is on the network, can WebEye be installed and work?
A: If there is a firewall on the network, 80th port is open for ordinary data communication. However, since WebEye transmits image data, the default 8080th port is required. Therefore it is necessary to open 8080th port of the network for remote users to access WebEye.
However, it is usual to open only 80th port on the network with firewall because of network security. In this case, remote users can access WebEye with 'Server Push Viewer' that can be found at 'Image Viewers' -> 'Other' menu in the 'Default Viewer'. Server Push Viewer enables WebEye to communicate through 80th port. In this case a user can receive images resolutions that are a bit unclear than the original.
Another method is that user change a image transmission port from 8080th port to any port granted by the firewall. User may configure the setting at 'User Custom Configuration' page in WebEye Admin page.
Q: How can a user see the image sent from WebEye when he uses Netscape?
A: If a user wants to see the real-time images of WebEye using Netscape browser, one has to install WebEye Plug-in program. The procedure of the Plug-in setup is as below.
- Access WebEye using assigned IP address on the Netscape like http://168.192.1.1/
- Setup the WebEye Plug-in using the Netscape Smart Update
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Q: How can a user see the image sent from WebEye when he uses IE-Explorer?
A: If a user wants to see the real-time images of WebEye using IE-Explorer browser, one has to install WebEye Plug-in and Active-X control for IE-Explorer Browser. Plug-in is used in the server-push, and Active-X control is for live image viewer.
If the Active-X control is not installed in your system or old version, the installation of Active-X control automatically will be taken. All you have to do is just click ¡°Yes¡± to the question whether your PC install it. And we recommend user should use IE-Explorer browser 4.0/5.0 or above.
When you access WebEye for the first time or you access another WebEye that is of upper version than existing one, your PC asks if you are going to install Active-X control or not. If your PC does not show a question message, you should check if Active-X Control is installed or not. If Active-X Control (WebEye Control) is already installed, you may remove it and re-install.
Q: How can it solved when Active-X Control is not installed?
A: Occasionally, WebEye control program (Active-X Control) is installed improperly according to types of computers. In this case, user may not see video on the screen or see a message of ¡®No Video Input¡¯. To solve this problem, user should remove and try to re-install WebEye control program as follows.
Remove WebEye control program by clicking the right button and selecting 'Remove' menu. At a PC that uses Windows98 OS, the program is installed in the directory of C:\windows\Downloaded Program Files. And at a PC of Windows NT or 2000, it is in the directory of C:\winnt\Downloaded Program Files. Then, access again to WebEye and install Active-X Control program.
If you may not see video properly even though you do the above-mentioned process, contact WebGate for more information.
Q: Video is not seen in WebEye's homepage. What is the problem?
A: The video from WebEye's inner CCD module is not seen. The first case is that you do select external video source for WebEye Cam#1 for E104 model. In WebEye setup program or WebEye administrator's page, you access a configuration page for "System". At the bottom of the page, there is a menu of "Attached CAM#1" in which you can select video source between "Ch0(Internal)" or "Ch1(External)". To see video from WebEye's internal CCD module, you should select "Ch0(Internal)". "Ch1(External)" is to see video from external CCD camera that is connected to the first BNC port in the rear of WebEye. So you should decide which video source you are going to use between internal CCD module or external CCD camera, then configure the menu of "Attached CAM#1" in the System Configuration page.
The second case is that you do not activate internal CCD module. In WebEye setup program or WebEye administrator's page, you access a configuration page for "Video". At the top of the page, there is a menu of "Select Video Channel". At the menu you select "Ch#0(Internal)", and at the next menu of "Video Input Control" you select "Enable". This process is to determine whether to show video or not.
The last case is that you do enable external channels to which no external cameras are connected. To use external cameras, you should connect external cameras to BNC ports in the rear of WebEye, and activate them in WebEye setup program or WebEye administrator's page. If you do not activate channels that are connected to BNC ports, their videos are not seen. And if you activate channels for external cameras without connecting them to their BNC ports, all videos at homepage are influenced. The videos can be seen dim or B/W mode.
A: The videos from external CCD cameras are not seen. The first case is because you do not activate the channels for external CCD cameras. In WebEye setup program or WebEye administrator's page, you access a configuration page for "Video¡". At the top of the page, there is a menu of "Select Video Channel". At the menu, you select the very channels that you are to connect to WebEye. At the next menu of "Video Input Control", you select "Enable". This process is to determine whether to show video or not.
The second case is that a BNC cable is not connected properly. Though the cable is connected physically, there still is a possibility of unstable connection between WebEye and an external CCTV camera. In this case, user may see very bad quality video or no video. If you are in the case, check if the BNC cable is connected properly or the BNC cable is available.
Q: Which pan/tilt/zoom mechanism can be installed to WebEye?
A: WebEye has function to control pan/tilt/zoom mechanism on-line, the mechanism is installed to WebEye through its DB-15 port or Terminal Block interface in the rear panel. Both WebEye E104 and WebEye E10 have DB-15 ports, but their functions are a bit different. WebEye E104 has two pairs of pins, one pair for RS-232 and the other for RS-485. WebEye E10 has two pairs of pins for RS-232.
With RS-485 pins of WebEye E104, you can install all models of Unimo Technology Co. and Sungjin Electronics Co. that are Korean companies. WebEye E10 does not have communication protocols but only interface for RS-232 pins. However you can install pan/tilt/zoom mechanism that has RS-422 interface to WebEye's RS-232 pins. WebEye E104 has PELCO's 'D' and 'P' protocols, and you can install any model of PELCO's pan/tilt driver that satisfy 'D' or 'P' protocol. In the case of using PELCO's products, it is needed to equip a signal converter. The converter is to change interfaces from RS-232 to RS-422, and it is sold any store where deals PELCO's products or interface specialty companies such as Blackbox Co. And you also can install pan/tilt/zoom mechanism that has RS-485 interface to WebEye's RS-232 pins. In this case, you need to equip a signal converter from RS-232 to RS-485. With zoom lens, it is not need to install special protocols by models. So, you may any connect zoom lens to a pan/tilt receiver (or controller).
With RS-232 pins of WebEye E10, you can install a pan/tilt driver of Surveyor Co. WebEye E10 does not have BNC ports to connects external CCD cameras. Instead of BNC ports, WebEye E10 has a DB-15 port in which an external CCD camera can be connected as well as two pan/tilt drivers. So it is better that you decide whether to install a pan/tilt driver to WebEye E10 and its external camera, when you make a DB-15 connector. In regards to zoom lens, WebEye E10 has fixed 3.8mm lens, and it is impossible to equip with zoom lens. But you can install a zoom lens to an external camera. In this case you should equip a pan/tilt/zoom receiver to control a zoom lens. For detailed description, please refer to main contents of WebEye user's guide.
Q: It is impossible to assign IP address to WebEye with Ping command. What is the problem?
A: Ping command is only used on local network. With a PC or a notebook computer, you can assign an IP address to WebEye connected on local network with ping command or setup program. If you cannot assign IP address to WebEye with ping command, you should check under written 2 points.
First, you watch the LED in the rear of WebEye. For accurate judgment, you disconnect and re-supply power to WebEye. WebEye has two LED of yellow and green in the rear. When you supply power to WebEye, green LED is on for two second then it is off. Afterwards it blinks once every two seconds. Yellow LED is on for 5-6 seconds after supplying power then it is got off. Afterwards yellow LED blinks continuously when it sends images. If green LED blinks once every four seconds, there is a problem at networking. Networking problem can be caused by bad network line and very rarely by LAN port of WebEye. In the situation, you check whether your network line works properly or not, and if there is dirt on WebEye's LAN port. If you cannot find any abnormality or malfunction on network line or WebEye's LAN port, ask your distributor for after-sales service.
If the LED blinks normally, you check the IP address of your PC or notebook computer. As explained before, ping command is only for a local network. Connected on a local network means that every device has local IP address. If your PC or notebook has a remote IP address compared to an IP address that you are going to assign to WebEye, you cannot assign an IP address to WebEye with your PC or notebook. Same local IP address of C grade network means that first 3 rooms¡¯ numbers are same but the fourth ones are different. For example 203.243.232.111 and 203.243.232.112 are same local network IP addresses, but 203.243.232.111 and 204.243.232.112 are remote network IP addresses to each other. This case can happen even when you connect your PC to WebEye with a crossover cable. Especially when you use a notebook computer, this case often happens. Because a notebook computer is portable, there are great possibilities to change its IP address to connect to various networks.
However there is another possibility. Two IP addresses of the same numbers from the first room to the third room on C grade network line can be remote IP addresses to each other. It is because there is ¡®Network Mask¡¯ on the network.
For example, if a netmask is set on 203.243.232.128, there are two local networks. One network has IP addresses from 203.243.232.0 to 203.243.232.127. And the other has IP addresses from 203.243.232.129 to 203.243.232.255. So you cannot assign an address of 203.243.232.111 to WebEye with a PC that has an IP address of 203.243.232.193. For detailed information, please refer to Appendix 5 in WebEye User's Guide.
Q: There is some problem to access WebEye. Sometimes I can access WebEye and sometimes not. How can it be solved?
A: Mostly this problem occurs on Cable Modem, ISDN, and xDSL lines that use modems or routers. Those lines connect WebEye and ISP though their modems or routers, and the modems or routers are set to disconnect their connection while WebEye does not use lines. It is because ISP sets the condition on the modem or routers to prevent their lines from being loaded a lot. Generally, a modem or a router is set to disconnect network in 3-5 minutes after WebEye stops using lines. In that case, there is no way for users to access to WebEye; it is because WebEye does not require a modem or a router to connect a line nor send any image unless a user try to access to it. But user also cannot access WebEye when a modem or a router disconnects the line.
If you have access problems with xDSL, Cable Modem, and ISDN network from time to time, you should set 'Dynamic IP Registration Interval' short like a minute, even though you assigned a fixed IP address to WebEye. With this setting, WebEye sends signal once per minute to register IP address to a dynamic IP registration server. When WebEye sends signal, modem connects line to WebEye. To maintain continuous connection, user should set dynamic IP registration interval shorter than the connection duration of a modem.
Q: How can it be solved when the runtime errors of the Plug-in/Active-X control occur?
A: If you see the message box like as "Mismatched Version", do as follows.
Re-install the Plug-in or Active-X control contained in the WebEye.
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A: If you see the message box like as "WebEye client initializing is failed", do as follows.
This is because user's PC does not have Winsock2 library.
Winsock2 library for Windows 95/98 can be downloaded from the public sites.
After download Winsock2, install it into system. Then re-run Web browser.
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Q: I can't see the images in WebEye JavaApplet view page. I am using Netscape browser on Macintosh computer. What should I do for that?
A: You need to install MRJ(Macintosh Runtime for Java) and MRJ Plugin for Netscape browser. Please, take the following steps for installing them.
1. go to http://www.apple.com/java/ and download MRJ v2.2.4.
2. delete the existing MRJ package's folder("root/Apple Extras/Mac OS Runtime for Java") if it is.
3. install MRJ package downloaded from step 1.
(refer to the apple's java site for detail information)
4. go to http://www.mozilla.org/oji/MRJPlugin.html
and download NetscapeMRJPlugin.
5. refer to the installation procedure in the mozilla's web site.
6. try to see the images in WebEye's JavaApplet view page after installing Netscape's MRJ Plugin.
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Q: I can't automatically download Plugin/ActiveX Control for WebEye. What's wrong?
A: Basically, the Plugin for Netscape browser and the ActiveX control for Internet Explorer are designed to be downloaded and installed automatically in the user's computer. But, for Netscape Plugin, if the Netscape browser can't support SmartUpdate function, the automatic installation after downloading may be failed. In case of ActiveX Control, if the IE browser's version is less than v4.0 or the registry information of system is corrupted, it may be not automaticaly donwloaded and installed in your computer. There are many situations which prevent the control from to be installed automatically because the modern computer system is very complex, various and, hosting a plenty of applications. So, for geting around of the problems with the installation of controls, we have prepared the manual installation program for WebEye Plugin/ActiveX control. Please, try to use that program.
1. download the manual installation program in our client support home page.
2. setup the manual installation program.
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Q: I can't running the setup program delivered with WebEye Product. What is the problems?
A: The setup program is MFC-based windows progam. So, if MFC42.DLL is not installed or the incompatitable version installed in your computer, the setup program may be failed to start. If the program shows the message like "...MFC42.DLL...not found...", you have to install MFC42.DLL. The installation procedure is the following:
1. download MFC42.CAB.
2. unzip the .cab file into your temporary folder.
3. execute the "mfc42.exe".
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Q: About the setup program, When I select one of WebEyes in the list box and press "Change IP Address" button, the setup program returns the "No Reponse" message. What's the problems?
A: If your computer is using "Obtain an IP address automatically" option in Windows->Control Pannel->Network->TCP/IP->IP Setting, Please, change it to "Use the following IP address" option as a fixed IP address for temporary. After then, do change the IP address of your WebEye as one of your site's IP subnet, by which you can access it. If you are failed to change the IP address of WebEye using the setup program after doing that, please, let us know about your computer's opearting system and the version of WebEye.
Q: About the setup program, When I select one of WebEyes in the list box and press "Start Configuration" or "Rebooting" button, the setup program returns the "No Reponse" message. What's the problems?
A: If the IP address of WebEye you selected is not in the subnet of your computer, you will face up with that "No Response" message. Please, make sure for WebEye's IP address to be in same subnet with your computer using "Change IP address" button.
Q: How to insert the .eye image file into your homepage?
A: This is a sample code to insert the .eye file into your homepage. If you want to use other file extension, not .eye , normally, the other file extension should be associated with application/x-webeye MIME Type in your web server for properly displaying the files as webeye's images.
<HTML>
<HEAD>
<TITLE> Show the eye file. </TITLE>
</HEAD>
<BODY>
<center><p><b><font size="4"> HTML file including the eye file. <br></font></b></center>
<hr><center>
<table width="500">
<tr>
<td><p>
<object id="webeye" codebase="http://211.53.133.91:80/wg_webeye.cab"
classid="clsid:A8739816-022C-11D6-A85D-00C04F9AEAFB"
align="center" width="486" height="720">
<param name="src" value="http://webeye.to/client_pulling/image2.eye">
<embed type="application/x-webeye" name="pulling"
src="http://www.webeye.to/client_pulling/image2.eye"
align="center" width=486 height=720
pluginspage="http://211.53.133.91:80/webeye-install.html"></embed>
</object>
</td>
<tr>
<td><br><br><br>
<object id="webeye" codebase="http://211.53.133.91:80/wg_webeye.cab"
classid="clsid:A8739816-022C-11D6-A85D-00C04F9AEAFB"
align="center" width="360" height="243">
<param name="src" value="http://webeye.to/client_pulling/image.eye">
<embed type="application/x-webeye" name="pulling"
src="http://www.webeye.to/client_pulling/image.eye"
align="center" width=360 height=243
pluginspage="http://211.53.133.91:80/webeye-install.html"></embed>
</object>
</td>
</table>
</center><hr>
<p align="center">
<font size="2">Copyright (C) 2000-2004 by WebGate Inc. All rights reseved.</font>
</p>
<p align="center"> </p>
</BODY>
</HTML>
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You can see this example on here, and insert some eye files which are captured on Microsoft Internet Explorer(over 4.0) and Netscape(over 4.5, but over 6.0) to the html file.In the source code, bold fonts are actually edited by user. <param> tag is used for OCX on IE, and <embed> tag is used for Plug-ins on Netscape. Who want to use this code must change IP address and URLs in this example to IP address of his webeye and web server which hosting eye files. For example, if you use xxx.xxx.xxx.113 for your webeye and xxx.xxx.xxx.57 for your web server, then you must change 211.53.133.91 to xxx.xxx.xxx.113 and webeye.to to xxx.xxx.xxx.57.
WARNING - In the Netscape version 6.0 and 6.01, you cannot see the wavelet data and image data(eye file) because those Netscape versions have a basic set of live connect functions which is provide by Plug-ins. It is not clear that this problem is solved on the next version of Netscape. If you want to know more detail information about this problem, then visit http://home.netscape.com/eng/mozilla/ns6/relnotes/pv6-1.html#problems