Patent ID: 11929843
Assignee: SAMSUNG SDS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method comprising:
managing, by a server, a chat room, the managing including storing a chat room ID of the chat room, a first user ID of a user associated with the chat room, a second user ID of a user associated with the chat room, the managing further including recording, into a main chat history, historical chat messages of the chat room sent by the first and second users, each historical chat message in the main chat history including an original message time corresponding to when the historical chat message was sent to the chat room;
receiving, by the server, after the historical chat messages of the chat room have been recorded into the main chat history, a chat invitation message, the chat invitation message including a third user ID of a third user being invited to the chat room and including a time limit;
based on the chat invitation message and the time limit thereof, generating a chat sub-history by including in the chat sub-history those historical chat messages in the main chat history determined to have original message times within the time limit such that historical chat messages with original message times outside the time limit are not included in the chat sub-history; and
sending the chat sub-history to a user device associated with the third user ID.