REMOTE LECTURE SYSTEM, LESSON MANAGER AND NETWORK SYSTEM

摘要

PROBLEM TO BE SOLVED: To guarantee text synchronous display among terminals, to perform the state display of a participant terminal, to perform effective text caching and to effectively and smoothly advance a remote lecture. ;SOLUTION: This lesson manager 14 transmits the event data of an event generated in a lecturer terminal 12 to the respective participant terminals 13₁-13_n. In the case of the request of the participant terminals 13₁-13_n does not match with the request of the lecturer terminal 12, the participant terminals 13₁-13_n are requested to match the request with the request of the lecturer terminal 12. Also, the request of a text from the lecturer terminal 12 to an HTTP(hyper text transfer protocol) server 11 and a response from the HTTP server 11 for the request are relayed and distributed to the lecturer terminal 12 and the respective participant terminals 13₁-13_n. Further, the lesson manager 14 informs the lecturer terminal 12 of the loading state of the text of the respective participant terminals 13₁-13_n.;COPYRIGHT: (C)1998,JPO