在某些场合人们只需要定期地观察图像的内容，而不需重视图像内容的“动感”，例如在车站、港口、机场或在恶劣环境（如化工、石油、森林防火等）场合的监测，以及快速传递图像资料（如文物图片、气象资料等）时，对图像实时传输的要求相对较低，可以用较慢的速率进行传输，此? In some occasions, people only need to observe the contents of the images on a regular basis without paying attention to the “dynamic” of the contents of the images, such as monitoring at stations, ports, airports or in harsh environments such as chemical industry, petroleum, forest fire prevention, As well as the rapid transfer of image data (such as artifacts pictures, weather data, etc.), the real-time image transmission requirements are relatively low, you can use a slower rate of transmission, this?