Samsung Electronics Co., Ltd.

Hyun-Min Yoon

Seong-Joon Jeon

Myeon-Kee Youn

Soung-Kwan Kim

Ji-youn Jung

Jun-Hwa Seo

Soung-Kwan Kimn

Young-Sook Ryu

Taek-Ho Kim

Hui-Jae Lee

Kwang-Yong Choi

In a Voice over Internet Protocol (VoIP) video communication method and apparatus, first and second VoIP-based terminals store video event indexes and images mapped thereto with respect to state information of a user and terminal, and establish a session using session establishment information defining the video event. The first terminal then transmits a data packet including the video event index, and the second terminal receives the data packet and outputs an image mapped to the video event index of the images stored in advance. Thus, by transmitting and receiving a predefined index alone without transmitting user and terminal states as a real time data-type image, the VoIP video communication method and apparatus prevent unnecessary waste of bandwidth in video communication.

Method and apparatus for VoIP video communication

A network access method of Wireless Local Area Network (WLAN) terminals and a network system thereof which are designed to support network association between a terminal and an Access Point (AP) in an IEEE 802.11 WLAN environment includes: scanning at least one AP in the network and determining whether or not the AP uses a Wired Equivalent Privacy (WEP) Key; and converting to an Open System authentication mode or a Shared Key authentication mode according to the determination. Accordingly, the terminal can scan for the existence of a WEP Key from at least one AP and convert into a network-accessible Open System authentication mode and a Shared Key authentication mode so as to execute an association.

Network access method of wireless local area network (WLAN) terminals and network system thereof

A method for scaling a display size between different types of user agents. The method includes exchanging session initiation protocol messages including media information when performing a call setup for setting up a media session between the user agents; determining any one of the user agents to scale the display size from the exchanged media information; and scaling, by the determined user agent, the display size on the basis of the media information, and sending video data subject to the scaling to the other user agent(s).

Method and system for sending video signal between different types of user agents

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Suwon-si, South Korea

Hyun-Min Yoon