Abstract: A handheld illuminating device with a monitoring function includes a main body and a plurality of light-emitting units and a video module at the front end of the main body. The main body is further provided with a wireless module, a display control module, a processor and a power supply module. The processor is electrically connected to the light-emitting units, the video module, the wireless module, the display control module and the power supply module, respectively. The power supply module is electrically connected with the light-emitting units, the video module, the wireless module and the display control module. With the above-mentioned structure, the handheld illuminating device captures real-time video information through the video module. The wireless module receives location information and transmits the real-time video information for remote storage, achieving the purpose of real-time monitoring.

Abstract: An adjusting assembly for a lens of a camera has a hollow housing with a mounting portion, at least one driving ring mounted around the lens, at least one turning rod mounted through the mounting portion and engaging with the at least one driving ring, and at least one limiting ring. The at least one limiting ring is embedded in the mounting portion of the housing and prevents the at least one turning rod from dropping out of the housing. The mounting portion is integrally formed on the housing and has an enlarged thickness that allows the at least one turning rod to be stably mounted on the housing. The at least one turning rod is embedded in the housing, such that appearance of the housing is smooth and pleasing.

Abstract: An adjusting assembly for a lens of a camera has a hollow housing with a mounting portion, at least one driving ring mounted around the lens, at least one turning rod mounted through the mounting portion and engaging with the at least one driving ring, and at least one limiting ring. The at least one limiting ring is embedded in the mounting portion of the housing and prevents the at least one turning rod from dropping out of the housing. The mounting portion is integrally formed on the housing and has an enlarged thickness that allows the at least one turning rod to be stably mounted on the housing. The at least one turning rod is embedded in the housing, such that appearance of the housing is smooth and pleasing.

Abstract: A network video server and a video control method thereof receive multiple sets of streaming data respectively transmitted from multiple network cameras connected with the network video server. Each set of streaming data has a piece of first streaming data having a first image resolution and a piece of second streaming data having a second image resolution being lower than the first image resolution. The network video server decodes the piece of first streaming data from one of the network cameras into a frame of video data and outputs the frame of video data during a full-screen mode, and combines the decoded pieces of second streaming data from all network cameras into a frame of video data and outputs the frame of video data during a split-screen mode. Accordingly, the sharpness and smoothness of video frames can be secured during the full-screen mode and the split-screen mode.