With the increasing frequency of information exchange and the improvement of the network environment, many meetings that used to be able to attend business trips can now be realized through the...

First, the project background Located in the north side of Beijing Liulichang Ancient Culture Street, "Beijing First Experimental Primary School", formerly known as "National Beijing Higher Normal...

A video conference is a meeting in which people in two or more locations conduct face-to-face conversations through communication devices and networks. Video conferences can be divided into...

Content navigation: Page 1: High-definition videopage 2:Page 3: High-definition video Everyone is familiar with standard definition (SD) analog TV. This is the TV we know and have been using for...