Anmerkungsschicht zur synchronen Zusammenarbeit

摘要

Effective real-time collaboration across remote sites in which any type of data can be shared in a common work space in a consistent manner is made possible by an annotation layer having multiple distinct modes of operation during a collaborative session with two or more people sharing the same work space. One mode is a discussion mode in which one or more users simply share a common view of the shared data and manipulate the view independent of the shared data. During the discussion mode, all user input is handled by the annotation layer which interprets user inputs to move common cursors, create, move or delete markings and text which, since the annotation layer is transparent, appear over the application. Another mode is an edit mode in which one or more users actually edit the shared data. The applications and the data are synchronized among all clients to display the same view. Manipulating the view includes moving a common cursor and placing markings on the common view using text and/or drawing tools.