Web camera (webcam)
The advent of the Internet and the widespread popularity of personal computers have created an unprecedented demand for high bandwidth networks. Recent trends have focussed on the configuration of the computer to perform a variety of user defined functions, including connecting to the internet and communicating with others also so connected. Video cameras have increasingly been used to augment the communication between individuals using the internet. A web camera (webcam) is a digital video camera set up to provide live video to the Internet such that any user connected to the network may choose to view what the camera is imaging. A webcam may connect to a Universal Serial Bus (USB) port of a personal computer and send video images to a browser that requests the images from the computer. A webcam captures a continual stream of video images and broadcasts the images via the Internet to any requesting Web browser. A web camera system consists of a video camera plus software that runs on a personal computer to periodically upload an image from the camera to a web page. Webcams have been proposed as a means to provide video images of meeting participants to other meeting participants. In a video conference system, a CCD camera converts images (real-life situations) taken from a graphic lens into dot-by-dot images in a computer's memory. The digitized images are compressed, then transmitted to the opponent's computer through a telephone for showing on a display screen of the opponent's computer.
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