Who can specifically talk about how to install the camera after buying it back? It should be comprehensive.

To realize online video communication, you must first have a PC digital camera. When the word "digital" is mentioned, the first thing that comes to mind may be a digital camera. Although the images taken by digital cameras are of high quality, it is difficult for ordinary users to use digital cameras with a resolution of several million pixels. However, although PC cameras are not as flexible and high-definition as digital cameras, they seem to be weak. However, if you apply it to the Internet, you will find that this cheap little thing will bring you endless fun. It can directly convert optical signals into video signals and input them into a computer without a video acquisition card. It is usually cheap and easy to use, and is suitable for various entertainment and non-professional purposes.

So, how do computer cameras capture images? In fact, the mystery of everything lies in the soul of the camera-the photosensitive device. The lens we often talk about is also a photosensitive device. At present, the photosensitive devices of cameras are designed and produced by two different technologies, namely CCD and CMOS. The principle of CCD (Charge Coupled Device) is to connect many photosensitive devices closely, and each photosensitive device is a point. When an image is projected onto the CCD through the lens, these points will receive different intensities of illumination and generate different currents, which will generate analog signals, and then the image signals will be captured after being converted by a series of auxiliary circuits. This is the simple principle of CCD imaging.

CMOS (Complementary Metal Oxide Semiconductor) is a photosensitive device that only appeared in recent years. It has the advantages of small production difficulty, small volume, high integration accuracy and low power consumption, so more and more cameras adopt CMOS technology. The advantages of CCD are good color detection effect and fast transmission speed, and because the device is sensitive to light, the change of light has little influence on CCD camera, so it is often used to manufacture professional digital cameras. However, in general, because the application of home cameras is not extensive and the standard requirements for pictures are not very strict, CCD and CMOS technology are also suitable for home cameras. Of course, if you like better picture quality, you can consider choosing CCD as the camera of the photosensitive device. If you pay attention to price, then CMOS camera is the first choice.

With the camera, your video images can be directly input into the computer (multimedia computers are needed), and with the Internet, the application level will be very extensive. If your computer is connected to the company LAN, I hope I can discuss my work directly with my colleagues in different offices. Besides the telephone, I can also try to hold a video conference through the computer camera. If conditions permit, you can install the NetMeeting directory server program provided by Microsoft for free on your Windows NT server. After setting up the server according to the help document, set the directory server used by Renren client program as the IP address or domain name of this computer. You can contact other colleagues as long as you open NetMeeting in the future. Colleagues who are lucky enough to install a PC camera will have a small camera icon next to the name of the NetMeeting user list. When you chat with him, you can not only hear his voice, but also see his "very happy" expression! Of course, in order to be able to talk, you need to prepare an earphone with a microphone.

If you have relatives or friends abroad and often chat by long-distance phone, I'm afraid everyone can't afford the expensive phone bill. The easiest way to save telephone bills is to make video calls through the Internet. Audio and video data of both parties are exchanged through the Internet. For most people, first contact each other through E-mail or ICQ, then dial-up the Internet and log in to the designated server through NetMeeting to find the caller's call in the user list. This process can be completed in Internet cafes, generally without adding other software. Internet cafes charge by the hour, which can save a lot of long-distance telephone charges. Connecting a personal computer camera to your personal computer, Netmeeting will enable you to enjoy a variety of services, such as voice, video mail, video phone, file transfer and online paging. It's economical, fun and convenient. Why not try it?

Install the camera

Next, we will install the hardware of the camera. Although your camera is not necessarily the same brand as the author's, almost all cameras are products with USB interface, so the installation methods are similar.

First, open the package. Generally, the camera box contains the camera, driver software CD, camera fixing clip (seat), manual and warranty. You can take them out one by one, and then fix the camera on the monitor stably for easy use.

The camera of USB port is connected by USB cable, which is usually directly connected to the camera, and the other end is a rectangular USB plug. Next, locate the USB connector near the motherboard connector on the back of the host. Generally, the motherboard provides two USB ports, and then plugs the USB plug into either of them. Because the device with USB interface can really support PNP function, even if the computer works normally, you can plug in and out the USB camera without any impact on the machine. However, before installation, you must first determine whether the USB interface is turned on. Because according to my experience, many USB interface options in motherboard BIOS are "disabled" by default. At this time, you have to restart the machine, enter the BIOS, open the "USB interface" and set it to "enable".

If all goes well, when your camera is plugged into the USB port, Windows will prompt you to find a new hardware device and pop up a dialog box asking you to install the driver for it (the author's operating system is Windows 2000, so the display is slightly different from Windows 98, but the steps are the same). You can click "Next" and then select the display device list, from which you can select the driver; Then select "Image Processing Device" from the device name. At this time, a dialog box pops up on the screen, which contains a list of many hardware devices. Although many mirror devices can be found, it is recommended that you use the attached driver and click on the disk to install it (Figure 5). At this time, you put the drive CD provided by the camera into the CD-ROM drive, and then find the drive letter of the CD-ROM drive in the settings dialog box, and switch to the corresponding storage drive directory; After finding the driver, you can click OK, and Windows will copy the driver file. After the program is copied, the camera can work normally.

Because the USB camera supports PNP function, there is no need to restart the system. After installing the driver, we can find a new device-mirror device in the system device properties, and there will be a newly installed camera in the device column.

There are many softwares that can realize network video communication, but for users who use Windows operating system, the easiest way is to use NetMeeting that comes with Windows to realize this function. Let's see how to install and configure NetMeeting.

First, check whether each host has installed the corresponding version of NetMeeting software. If not, you can double-click Add and Remove Programs in the control panel, click Windows Installer in the pop-up dialog box, select NetMeeting in the communication item, and click OK to automatically install the system. When installing, the system will prompt to insert the installation disk, and then insert the corresponding installation disk. Restart the computer, and "NetMeeting" will appear in the Internet tool in Accessories.

After starting Netmeeting for the first time, you will be prompted to enter your personal information. Enter your personal information and go to the next step. At startup, you will be given the option to log in to the last directory server. Just follow the default options to "Next". Next, NetMeeting will let us input our own Internet access mode. You can choose Internet access modes such as 28.8Kb/33.6Kb/56Kb/ LAN. Next, NetMeeting will let us test the receiver and microphone, which is the basis of video phone! After setting it up, you can see the main interface of Netmeeting. Let me take NetMeeting as an example to introduce how to communicate online video.

After starting NetMeeting, click Options under the Tools menu, and the settings dialog box as shown in Figure 9 will pop up. As can be seen from the figure, there are four option tabs in this settings dialog box, namely: General, Security, Audio and Video. In fact, if the general IP phone is implemented in the local area network, it can be used only by making basic settings in the "General" and "Audio" items. It should be noted that if it is only used in the company LAN, the "location" column in the "general" column can be left blank, and the "remarks" column is even more dispensable. But if you want to use this software effectively, you'd better set it according to the characteristics of this machine. If video communication is to be carried out, we must also set it in the Video tab. First, let's go to the Video tab. By default, the option "Automatically receive video at the beginning of every call" has been activated, and then you can select the camera device you installed in the system in the "Camera Properties" drop-down menu below. Then click OK. The audio dialog box is used for audio setting and audio fault debugging. Generally speaking, it is enough for us to use its default options.

After completing the above simple settings, you can now run NetMeeting. First, press the button and the dialog box will pop up. In the figure, just enter the computer name of the other computer (that is, the name set in the center of the network neighborhood), select "Network" in "Use", and then press the "Call" button to realize communication. Just talk into the microphone, and you can make long-distance real-time calls. If your camera can be installed, then you can realize videophone, don't you think it's fun!

As for chatting with others on the Internet, the setup steps are similar to those in the LAN, but the calling method is a little different. In the step of Figure 7, we can't select "Microsoft Internet Directory" according to the default option of NetMeeting, but enter a NetMeeting server name. There are many such servers on the Internet, so we enter "202.96.111.19". I would like to remind you that the person who communicates with you in video must also log on to the same NetMeeting server before they can contact! Next, we must establish a connection with the Internet. After dialing in, click the button in the interface in Figure 8 with the mouse, wait for a while, and you can see the window. It shows that there is only one user connected in this server. If the other person also has a camera, there will be a camera pattern in front of his name. If you want to talk to this netizen, you can choose this netizen and then choose to talk. If the other party confirms your call, then you can talk to him face to face. You can chat even if the other person doesn't have a camera, but only the other person can see you, but you can't see each other!

Special reminder

According to the above steps, I believe you can also use NetMeeting freely to have a conversation with netizens. But in the actual use process, we still have the following problems to pay attention to!

1. Pay attention to the installation of sound card. To use IP phone to contact, besides the camera, you must also configure a sound card, and you must turn on the microphone function of the sound card. By default, the "microphone input" of Windows system is "mute". You can click the sound icon in the system tray to pop up the sound setting window, and remove the "Mute" under the microphone option.

2. If the user you are calling is not in the current NetMeeting directory server list, but you know the name of the user you want to call, you can use the "speed dial" function to call the user directly without logging in to the directory server, which can save a lot of time. If you know the IP address of the other party, it will be easier to fight. Just press the "Call" key and enter the IP address to establish the connection directly. In addition, although NetMeeting sets the default refresh time of the directory server, manual refresh can help you find the user you want to call faster. If there is no user you are looking for, you can log in to another server, select another server from the Server drop-down menu, or click the server you want to view from the directory window. Sometimes, if many users log on to the directory server, it may make you "flinch". At this time, you can click on the "Category" list at the top left of the directory window. There are seven different ranges to choose from, and you can filter out the list of users who do not meet the requirements!

3. When using NetMeeting, some users will get the error "Directory Server Not Found". After the error prompt, there is an error handling prompt: "You may not be connected to the network, or you have written the server name wrong". To change the server name, click Options on the Tools menu, and then select the Call tab. There are many reasons for this error prompt. The first reason is that the computer is not connected to the network, and the second reason is that the directory server selected in the directory server name list on the call page of the tool options window is not open, or your computer cannot connect to it, so we must first connect the computer to the network. Without knowing the address of the directory server, you do not use the directory server to make a call, but directly use the network (TCP/IP) address of the computer you want to talk to. If you want to know the exact NetMeeting server address, you can query the directory server address of the online hotline, and then use Netmeeting with the directory server.

In fact, Netmeeting in Chinese is very simple to use, and many friends "reject" it just because they don't know the Netmeeting server. In fact, as long as you use the "Netmeeting service" in the major search engines on the Internet, you will soon find dozens of such servers! Act quickly, buy a camera and go home, join the video face to face!

They can also communicate online.

1. VoIP

VoIP is an ancient IRC (Online Chat) software, which allows you to chat with your friends through the network with a microphone and see each other's images through the camera. VoIP 5 only has a trial version of 14 days, and its license fee is $49.95. After registering with the nearest ITSP (Internet Telephone Service Provider), you can make calls from one computer to another and from one computer to ordinary telephones. It should also be noted that making phone calls with PC is not free, and the cost of making internet phone calls should be: the full cost of local internet access and the call cost of service providers. For the charges of specific service providers, it is necessary to determine whether there is ITSP in the called party's area. Because the rate is related to the rate of the called destination and has nothing to do with the location of the calling party, it is necessary to know the rate of the called destination before registering and using it.

Download URL:/down/iphone5.exe.

2.LinkTEL

LinkTEL is a videophone software developed by China Taiwan Province Xunlian Company. The latest version is 3.2. It has a nice Chinese name "Li Ketong", which is very suitable for formal talks. The downloaded trial version has limited functions: the sound will be turned off every time you connect for more than 2 minutes. The trial version only provides a trial time of 15 minutes, and the sound will be automatically turned off after 15 minutes. After the 30-day probation period, you need to purchase the official version of the software, and the cost is $39.90.

Download URL: vnet.com/download/d/Ltl320dl.exe

3. Video phone

VDOPhone provides the best image quality for video conferencing, but its limited additional functions and poor sound quality make it unable to surpass those rich VoIP software. VDOPhone is not compatible with the H.323 telephone standard, so it is impossible to talk to people who use other VoIP software. If you want to chat with people with the same hobbies, the VDO Club on VDO website provides a classified list of online VDOPhone users, such as business, sports and bachelors. In addition, the security function of VDOPhone will also be welcomed by parents. It can set password protection to prevent children from talking to some inappropriate objects.

Download URL: ftp://www.newhua.com/vdptrial.EXE

4. Video phone payment

Video VoxPhone Gold is the best VoIP software at present, which can provide real-time audio and video calls, direct transmission of files and ordinary short messages, five-person network conference, recording and sending voice mails, and support VoIP of H.263 and H.323 standards. The registration fee is $29.99.

Download address:/home1/soft22/chorus.exe.

6.iSpQ internal communication 1. 1

ISpQ Intercomm is a compact instant messaging tool. Just register before using it and you can enjoy the fun brought by videophone. Compared with other similar tools, in addition to common functions, you can also have audio conversations with several friends at the same time. As long as both parties have installed cameras, they can have an instant video conference with friends, which is an audio-visual instant messaging tool.

Download address: FTP://FTP1.mydown.com/home1/soft21/ispqic.exe.

Mainstream camera recommendation

PROCHIPS elf

This rookie elf is produced by South Korea's PROCHIPS Company. It looks like a round egg, using USB interface. The installation of rookie is very simple, just like all USB cameras on the market. Just plug its USB connector into the motherboard, and the driver and application can be used normally after installation.

Reference price: 300 yuan

Zoltrix EagleCam (eagle eye)

This camera has a special shape and a simple internal structure. Conexant/Rockwell digital CMOS chip, color lens and USB interface are adopted to support hot plug. EagleCam does not have high requirements for the system. Generally, computers above P 166 need 16MB of memory. The resolution of EagleCam is 320×240 or 352×288, and the number of colors is 65,535. When the resolution is 176× 144, the dynamic video capture can reach 30 frames per second. It also has the function of remote security monitoring, and comes with installation accessories that can be fixed on PC and notebook computer.

Reference price: 400 yuan

Ziguang UnisVC35A

This camera uses CMOS sensor and USB interface. It has the functions of taking electronic photos and making computer videos. Express delivery with photos can help you make all kinds of greeting cards, electronic albums and so on. Save them or email them to your friends. In addition, the Acer EasyAxess network conference software presented at random allows you to join the network discussion group conveniently.

Reference price: 600 yuan

Logitech "Watch Happy Edition"

Logitech has always been famous for its excellent mouse products, and its Quick Cam series CCD cameras also show its strong R&D strength. The Quick Cam Home adopts a unique TureView base design, through which it can be hung on the display. Compared with other digital cameras, the lens of Quick cam home is closest to the display screen. Its advantage is that users can talk to the display screen in a natural posture when making video calls, and the other party will not regard your image as a "squint" image. In addition, in addition to the shutter button, lens cover and work indicator light, Happy Edition also has a built-in USB microphone, which is very sensitive and has excellent sampling effect.

Reference price: 580 yuan

Innovative webcam enhanced version

This webcam PLUS has a USB interface, an all-black shell and a generous design. CMOS photosensitive element is adopted, which can reach up to 370,000 pixels and support the resolution of 640×480. Functionally, it supports wide viewing angle, focal length adjustment and some special effects design. Although the picture effect is slightly different from CCD photosensitive element at high resolution, the overall performance is still very good in the innovative positioning of network video solutions. In addition, webcam PLUS can be combined with monitoring software to form a simple video monitoring system.

Reference price: 580 yuan

With the rapid development of Internet, online video communication becomes possible. People can chat face to face with their relatives and friends through the Internet. Multinational companies based on the world no longer need employees to fly around to attend some employee training or company meetings; Online video communication also provides the most direct convenience for our online teaching. Students and teachers no longer need people who only hear their voices but can't see them. Everyone can have face-to-face communication.

Of course, with the continuous development of the network today, it will be widely used in other aspects. Its technical requirements are not very high. Why not try it if you can? This is the purpose of our application.