Patent ID: 11968057
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A document-usage control apparatus comprising:
a memory in which a piece of relationship information is registered for each pair of users, the piece of relationship information indicating a relationship between the pair of users; and
a processor configured to:
generate an attendance range which is a tree-structure of attendees at an online conference based on the piece of relationship information between each pair of the attendees;
generate a sharing range which is another tree-structure of the attendees based on a direct and indirect relationship to a particular attendee, such that the sharing range includes a first attendee based on an indirect relationship of the first attendee to a second attendee through an intermediary attendee between the first attendee and the second attendee, wherein a direct relationship exists between the first attendee and the intermediary attendee and between the second attendee and the intermediary attendee, but does not exist between the first attendee and the second attendee;
control use of a document to be shared at the online conference for each user attending the online conference, such that the document is shared only among attendees of an overlapping portion of the attendance range and the sharing range; and
upon detecting a leaving of the intermediary attendee from the online conference, modify the sharing range to remove the first attendee from the sharing range while the second attendee remains in the sharing range.