网络摄像头- How Webcams Work

网络摄像头

One problem with using a camera hooked to acomputervia aUSBcable is thelimited cable length. What if the room you want to capture is at the other end of the house, or outside? In that case, you need to purchase a camera with external connections. You have a few options:

You can place a standard camera anywhere in the house and run a video cable with RCA jacks on it from the camera to the computer. There are all sorts of places on the Web that sell smallpinhole video cameras, either on their own or embedded in things like clocks andsmoke detectors. You can find small security cameras for less than $100. (Click here to use the HowStuffWorks search engine to search for security cameras.)
You can avoid the cable by using aradiolink (X10: XRay Vision is one example of this type of product), anEthernetconnection or aWiFisetup. If you already have ahome network, connecting an external Webcam to your computer probably won't require any additional networking.

Monitoring your home and sharing images via the Web are only a couple of the things you can do with your Webcam. There are any number of ways to make use of a camera that's connected to your computer. You can get software that will let you makevideo phone callswith a friend who also has a Webcam. You can hold a video-conferencing session with business associates on the other side of the world. You can conduct a video interview and broadcast it live on yourblog. Some Webcam software will even deliver images directly to your Web-enabledPDAor智能手机. Other products let you connect your camcorder to your Webcam setup so you can let everybody watch your vacation footage via the Internet. The possibilities are endless.

To learn more about Webcams and related topics, check out the links below.

How Webcams Work

网络摄像头

Related HowStuffWorks Articles

More Great Links