Camera (CAMERA or WEBCAM), also known as computer camera, computer eye, electronic eye, etc., is a video input device, is widely used in video conferencing, telemedicine and real-time monitoring. Ordinary people can also talk and communicate with each other over the Internet with images and sound through cameras. In addition, people can also use it for a variety of popular digital imaging, audio and video processing. Cameras can be divided into two categories: digital cameras and analog cameras. Digital cameras can convert analog video signals generated by video capture devices into digital signals, which can then be stored in a computer. The video signal captured by an analog camera must be converted to digital mode by a specific video capture card and compressed before it can be converted to a computer. A digital camera captures the image directly and then transfers it to the computer through a serial, parallel or USB port. The camera on the computer market is basically a digital camera, and the digital camera to use the new data transmission interface USB digital camera is the main, most of the market is visible on this product.