Camera (CAMERA or WEBCAM) is a video input device, a kind of closed-circuit television, is widely used in video conferencing, telemedicine and real-time monitoring. Cameras generally have video photography, dissemination and static image capture and other basic functions, is through the lens to capture the image by the camera within the light-sensitive components of the circuit and control components of the image processing and converted to digital signals that can be recognized by the computer, and then through the parallel port, the USB connection, the input to the computer by the software and then restore the image, thus forming the picture.
Cameras can be divided into two categories: digital cameras and analog cameras. Digital cameras convert analog video signals generated by video capture devices into digital signals, which are then stored in the 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 transmits it to the computer through a serial, parallel or USB port. The computer market camera is basically based on the digital camera, and digital camera in the use of new data transmission interface USB digital camera is the main, most of the market is visible in this product. In addition to this there is a video capture card with the use of the product, but is not yet mainstream. Due to the rapid popularity of personal computers, the overall cost of analog cameras is higher, and can not meet the BSV LCD splicing screen interface and other reasons, the transmission speed of the USB interface is much higher than the speed of the serial port, parallel port, and therefore the market USB interface digital camera. Analog camera can be used with a video capture card or USB video capture card, it is easy to connect with the computer to use, the typical application is general video surveillance. Clean area camera, clean area embedded special camera is a clean area clean room for real-time monitoring of important equipment key positions of the special camera. The camera flat panel, embedded in the color steel plate installation, zero health dead ends, easy to clean, easy to install, fast multi-point control, compatible with mainstream video systems.