发明授权
US08756304B2 Relationship based presence indicating in virtual area contexts 有权
基于关系的存在表示虚拟区域上下文

Relationship based presence indicating in virtual area contexts
摘要:
A user's presence is established in a particular zone of a virtual area that is assigned to the user. An indication of the user's presence in the particular zone is transmitted to each communicant who has a respective relationship tie with the user that satisfies a governance rule that is associated with the particular zone.
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