In a server-client network conference system having a conference server 100 and a plurality of conference terminals 140a to 140n through a network 130, a conference data storage section 120 creates a real-time conference data file 123 and an index file 122 containing time-of-day information and heading...http://www.google.com/patents/US7548951?utm_source=gb-gplus-sharePatent US7548951 - Minute file creation method, minute file management method, conference server, and network conference system