Patent ID: 7774505
Filing Date: 2010-08-10
Classification: H04L,H04W

Abstract:
1. A method for transmitting image data in real-time between mobile communication terminals in a mobile communication system, the mobile communication system including a host mobile communication terminal, at least one client mobile communication terminal, an SMS server, and a Packet Data Serving Node (PDSN), the method comprising the steps of: when an Internet Protocol (IP) address is received from the PDSN assigning IP addresses through a Point-To-Point (P2P) protocol connection with the host mobile communication terminal and client mobile communication terminals for an application of transmitting image data in real-time, transmitting by the host mobile communication terminal an invite message including the IP address to the client mobile communication terminal via the SMS server providing an SMS service to the host mobile communication terminal and the client mobile communication terminals; after receiving the invite message, receiving by the client mobile communication terminal an IP address from the PDSN, and transmitting a register message including the IP address to the host mobile communication terminal via the PDSN; updating by the host mobile communication terminal a buddy list for communication partners based on the register message, and transmitting the updated buddy list to the client mobile communication terminal via the PDSN; and exchanging by the host and the client mobile communication terminals the image data in real-time with each other based on the updated buddy list, wherein the host mobile communication terminal sequentially scans and transmits horizontal and vertical coordinates of an image line to the client mobile communication terminal in a predetermined time interval, and the client mobile communication terminal sequentially receives and interconnects the horizontal and vertical coordinates to display the image in real-time.