Method and apparatus for supporting cooperative activity
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United States of America Patent
Stats
-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Nov 29, 1995
filing date -
Nov 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Provided are a method and apparatus for supporting a cooperative activity in which an activity is performed by cooperation among a plurality of participants, as in a television conference system. When another user attempts to participate in the cooperative activity (session), a guardian is assigned to the session and a guardian is assigned also to the user attempting to participate. Allowance or refusal of participation by the user in the session is decided based upon the access control level of the guardian corresponding to the user, a guardian tree defining the path of the guardian and the mutual relationship between the guardians.
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