Electronics and Telecommunications Research Institute

Doo-Hyeon Kim

Seung-Ku Hwang

Jae-Young Lee

Sung-Ho Ahn

Min-Gyu Kang

Hyung-Chul Kim

Jin-Hak Bae

In the method for managing a variable bit rate so as to provide a streaming service and in the record medium capable of being read through a computer having a record of a program to realize the inventive method, a frame rate controlling system through a removal of a frame and a fidelity controlling system are used to change a bit rate of multimedia video data and thereby provide a multimedia streaming service based on the various bit rates according to a bandwidth change of a communication network, the fidelity controlling system being gotten by differently providing selection ranges for discrete cosine transform (DCT) coefficients in a unit of a block within a frame. This inventive method comprises a first step of decomposing an original video bit stream stored already, into a file type capable of supporting the variable bit rate, and then storing it; a second step of merging data based on the decomposed type by considering a traffic state of a communication network; and a third step of providing the streaming service by using the video bit stream merged, whereby effectuating in a use of an information communication system etc.

Method for providing variable bit rate in streaming service

In a cooperative computer based system for editing a web document including a plurality of clients a server, the cooperative computer based system includes means for generating editing instructions, converting editing instructions to a message related to editing and transmitting the message related to editing to the server; means for determining if the web document can be modified, based on the message related to editing; modifying contents of a copied web document stored in the server in conform to the message related to editing; and transmitting the message related to editing to the plurality of the clients; and means for modifying contents of the copied web document stored in each of the plurality of the clients in conform to the message related to editing transmitted from the server.

System and method for cooperative editing of web document

Growing community of inventors

Taejon, South Korea

Doo-Hyeon Kim