Electronics and Telecommunications Research Institute

Bum Ho Kim

Kyeong Tae Kim

Jeong-Woo Lee

Jeong Woo Lee

Seon-Tae Kim

Pyeong Soo Mah

Chang Sik Cho

Gyu Sang Shin

Hyung Kook Jun

Duk Kyun Woo

Eun Young Kim

Jin Wuk Seok

Sang Cheol Kim

Yu Seung Ma

Hae Yong Kim

There is provided a network join method including transmitting a long beacon message including transmission timing information of a first short beacon message to a child node network device, transmitting a first short beacon message including information regarding an interval in which it is possible to transmit a message, to the child node network device according to a transmission timing of the first short beacon message, receiving a slot allocation request message from the child node network device according to the interval in which it is possible to transmit a message, and checking whether the child node network device joins a network, and transmitting a slot allocation confirmation message to the child node network device.

Network join method and network device using the network join method

Provided are a coded block pattern (CBP) estimating method which is performed using an average value and a dispersion value between blocks of CBPs in a moving picture encoder for IP-TVs (Internet Protocol-Televisions), and a block mode decision method, which can determine all block modes with only the first 16&#xd7;16 block. Accordingly, since an additional operation for mode determination is not necessary, an amount of calculation and thus a calculation time can be remarkably reduced.

Method of estimating coded block pattern and method of determining block mode using the same for moving picture encoder

Growing community of inventors

Daejeon, South Korea

Bum Ho Kim