As the most important collection device for video conferences, video conference cameras play an important role in the selection of video conference hardware equipment. As a professional conference collection device, video conference cameras have different parameters from other general household cameras. Parameters can often determine the product functions of a video conference camera. Let’s start with the parameters of several video conference cameras and analyze several parameters that need to be paid attention to when acquiring a video conference camera:
The lens is a vital part of a video conference camera. The photosensitive elements used for the lens of video conference cameras on the market can be divided into CCD and CMOS. The advantage of CMOS is that the cost is lower than that of CCD, and the power consumption is much lower. However, because the technology used is not sophisticated yet, it has not been widely used, but its advanced nature determines it as the future trend. At present, the size of the CCD photosensitive element is mostly 1/3 inch or 1/4 inch. Under the same resolution, it is better to choose a larger element size.
2. Focal length
The focal length is the distance between the point that can be adjusted and the camera. If the focal length is large, the distance that can be photographed is far away. Generally, fixed-focus video conference cameras are cheaper than focusing cameras. The larger the focal length, the farther the target can be seen through the camera, and the smaller the focal length, the closer the target can be seen.
3. The resolution of the picture
The resolution of pictures is the ability of the camera to analyze and distinguish pictures. It has a direct impact on the role of pictures. Resolution can generally be divided into two types: picture resolution and video resolution, namely, the resolution when capturing static images and the resolution when capturing dynamic images. In the practical use of video conferencing, the picture resolution is generally higher than the video resolution.
The types of resolutions that can be given by video conferencing cameras on the market are also different, so pay attention when purchasing. Some resolution marks refer to the interpolation resolution that these products can reach using software, but they are distinguished from hardware. The rate comparison still has a certain interval.
4. Collected pixels
The pixel value collected by the camera is an important target that affects the quality of the video conference camera, and it is also a more important sign for judging its quality. The pixel value of early products is generally around 100,000. Due to the low technical content, it is now on the margin of screening, and users should pay attention to it when buying. But blindly considering the pixel value is also unnecessary. Because the higher the pixel value, the stronger the ability of the product to analyze images, the higher the requirement for the computer’s ability to process data.
If the computer equipment is not high enough, the use of high-pixel collection equipment may cause a delay in the picture, and then affect the transmission of the video conference. Therefore, users should summarize their own practical needs when purchasing products, and do not blindly seek trends.
5. Transmission interface
it is not enough for video conferencing cameras to collect high-quality pictures. We also need high-speed transmission interfaces to transmit the collected data. If the transmission bandwidth of the interface we choose is less, the data will be blocked or even frame skipped. However, there will be a lot of data transmission in the practical use of video conference cameras, and users should pay attention to this point when purchasing. USB interface products have always been widely accepted for plug-and-play and easy-to-use. The video conference camera uses a USB interface, which can be plug and play, but because some devices use a lower version of the USB, the transmission interface cannot adapt to larger picture data, so we must publish the USB version when we acquire it. And transmission bandwidth.
Post time: Oct-28-2020