Multiple streams of data are streamed to a user's terminal with images from different cameras. Low resolution thumbnail images tell the user what image streams are available. A focus stream provides high resolution images from a selected camera. A user can switch the focus stream to another stream by...http://www.google.com.tw/patents/US7196722?utm_source=gb-gplus-share專利 US7196722 - Multiple camera video system which displays selected images
