A still picture. Hikvision was applied for creation on the China Trademark Network on November 29, 2012. It is a brand of Hangzhou Hikvision Digital Technology Co., Ltd. The meaning of Hikvision 4200 remote playback of single frame is that a single frame image refers to a still picture, and a frame is the smallest unit of a single image in image animation, which is equivalent to each frame of the film. Camera (CAMERA or WEBCAM), also known as computer camera, computer eye, electronic eye, etc., is a video input device that is widely used in video conferencing, telemedicine and real-time monitoring.