Korea Electronics Technology Institute

Other

Seong Yun Kim

Su Jin Kim

Ji Ho Lee

Sung Chan Choi

Seung Myeong Jeong

Jong Hong Park

Sung Wook Jung

There is provided a data interworking method between a oneM2M system and an NGSI-LD system. The data interworking method according to an embodiment of the present disclosure includes: retrieving, by an IPE, resources in the oneM2M system that perform data interworking with the NGSI-LD system; retrieving labels of the retrieved resources; acquiring a mapping-rule from the retrieved labels; and storing the acquired mapping-rule. Accordingly, data interworking between data platforms using different standards is performed more easily, so that technology may go one step further to the goal of interconnecting and servicing all things in a global environment as IoT ultimately pursues.

Data interworking method between ONEM2M system and NGSI-LD system

Provided are an IoT device and an IoT communication method. The IoT device may: be connected to a server via NAT; execute a first session for service connection; and execute a second session for calculating a particular keep-alive value corresponding to a period in which an IP address mapped by the NAT expires. The present invention can minimize transmission of a keep-alive value of an IoT device, enables an IoT device to share a particular keep-alive value with other IoT devices, and thus can minimize a network load which may be caused by a keep-alive value of an IoT communication device.

IoT device connected to server via NAT, and IoT communication method

Disclosed is a toothbrush and a toothbrush having interdental brush. There is provided the configuration of the toothbrush in which toothbrush bristles are aligned in two lines without the bristles in the middle of toothbrush head, and interdental brush bristles are also provided, so that toothbrush bristles can be deeply fit into and touched to every teeth and interdental portions without needs of applying excessive power or pressure during toothbrushing, thereby to prevent damages on teeth and gums, easily remove food particles and plagues remained on the toothbrush, and prevent the secondary bacteria diseases due to fast dry of the toothbrush.

Toothbrush having interdental brush

Growing community of inventors

Seoul, South Korea

Seong Yun Kim