What is a camera?

What is a camera?

Jul 27, 2021

What is a camera?
         Cameras can be divided into two categories: digital cameras and analog cameras. The digital camera can convert the analog video signal generated by the video capture device into a digital signal, and then store it in the computer. The video signal captured by the analog camera must be converted into a digital mode by a specific video capture card, and compressed before it can be converted to a computer for use. The digital camera can directly capture the image, and then transfer it to the computer through the serial, parallel or USB interface. The cameras in the computer market are basically digital cameras, and the digital cameras are mainly USB digital cameras using a new data transmission interface. Most of the products visible on the market are such products. In addition, there is a product that works with video capture cards, but it is not yet mainstream. Due to the rapid popularization of personal computers, the overall cost of analog cameras is relatively high, and the BSV LCD splicing screen interface cannot be satisfied, the transmission speed of the USB interface is much higher than the speed of the serial port and parallel port, so the digital camera with the USB interface is on the market. The analog camera can be used in conjunction with a video capture card or a USB video capture card, which is very convenient to connect to the computer for use. The typical application is general video surveillance. The clean area camera, the embedded dedicated camera in the clean area is a dedicated camera for real-time monitoring of important equipment and key positions in the clean room of the clean area. The camera is purely flat board, embedded in color steel plate for installation, zero sanitary dead corners, convenient cleaning, convenient installation, fast multi-point deployment and control, compatible with mainstream video systems

        The camera (webcam) generally has basic functions such as video camera/transmission and static image capture. After the image is captured by the lens, the image is processed by the photosensitive component circuit and control component in the camera and converted into a digital number that can be recognized by the computer. The signal is then input to the computer via the parallel port or USB connection, and then the image is restored by the software.

 
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