Abstract:
PURPOSE: A data collecting method in a data collecting network is provided to minimize the congestion of all networks by successively transmitting the sensor data of a sensor node to a sync node. CONSTITUTION: A sensor node receives the sensor data collecting command of a sync node(S1). The sensor node calculates waiting time by using the number of hops and identification(S2). The sensor node transmits the data to the sync node by waiting transmission during waiting time(S3). The sensor node collects data in a data collecting network.
Abstract:
본 발명은 UART 기반의 RF 통신장치 및 방법에 관한 것으로, RF 통신부를 복수개 구비하고, 각 RF 통신부에서 서로 다른 주파수 대역을 이용하여 신호를 송수신함으로써, 하나의 송신 신호에 대해 서로 다른 주파수 대역으로 신호를 전송하고, 서로 다른 주파수 대역으로부터 동일 데이터를 수신하여 무결한 데이터를 처리하도록 한다. 본 발명에 따르면, RF 환경을 사용하는 센서 네트워크 또는 무선환경 통신망에서 무결한 데이터를 무선환경으로 전송해야 할 경우 데이터의 깨어짐 없이 비교적 깨끗하게 데이터를 전송할 수 있는 이점이 있다. 특히, UART 방식으로 통신을 수행하는 RF 통신칩에 대해서 송신의 경우는 추가적인 소프트웨어 동작 없이 이중으로 데이터를 보낼 수 있는 효과가 있다.
Abstract:
PURPOSE: A security light local area wireless communications routing method is provided to route in the security light switch in a security light controller. CONSTITUTION: A neighbor establishment security lamp enforces the neighbor establishment performance. The neighbor establishment security lamp transmits an initialization request message for the neighboring neighbor security lamp. The neighbor establishment security lamp forms the security light network after receiving the initial response message from the neighbor security lamp. The neighbor establishment security lamp receives the data message from neighboring the neighbor security lamp. The neighbor establishment security lamp restores a path of the neighbor security lamp in which error creates due to the link loss.
Abstract:
PURPOSE: A guard lamp for transmitting an accident alarm, providing a vehicle parking guide broadcast, and performing an emergency call-out vehicle guide function are provided to rapidly evacuate residents by transmitting a warning call for informing an accident. CONSTITUTION: A guard lamp(100) includes a network connection unit, a speaker drive unit, a warning lamp drive unit, and a control unit. The network connection unit is connected to a guard lamp management server(200). The speaker drive unit transmits an accident alarm through a speaker and provides a vehicle parking guide broadcast. A warning lamp drive unit drives a warning lamp for guiding an emergency vehicle to an accident spot. The control unit controls operations of the speaker driving unit and the warning lamp drive unit according to a control command of the guard lamp management server.
Abstract:
PURPOSE: A parallel data flow processing device and a method thereof are provided to process data at high speed while keeping order without regard to the number of data flows by deciding order of input data and outputting data processed parallelly by processors according to the order. CONSTITUTION: A flow discriminator(103) discriminates the flow of the first data inputted. A processor allocator(105) assigns a processor which does not operate among processors(109) to the first data. If the second data which equally has the discriminated flow is processed with one processor, an order decision unit(107) decides order of the first data. A sorter(111) receives the first data processed with the allocated processor and outputs according to the order. The flow discriminator generates flow ID information about the discriminated flow.
Abstract:
PURPOSE: A node updating method based on a database and a target node operating method thereof are provided to update an image of a sensor node by communicating only delta information consisting of difference between a present execution image and an image to update of the sensor node. CONSTITUTION: A database storing a node identifier and an execution image about each node is constructed. The execution image of a target node from the database is extracted by using an identifier of the target node(S330). The similarity of data between the execution image and an updating image is compared with reference to an address field. The data includes a record of the updating image which is not similar. Delta information is generated(S350).
Abstract:
An apparatus and a method for selecting an optimal packet transmission path are provided to prevent loss of packets and keep the sequence of the packets by minimizing the change of existing path when adding or deleting the path. A field value extraction unit(110) extracts a field value corresponding a specified field of a packet which comes into a packet processing system supporting multi paths. A selecting path existence checkup unit transmits the packet if the corresponded field exists. If the path not exists, a path calculator(130) calculates a prime number which not exceeds the available number of paths and assigns the rest which is obtained by dividing the hash value into the next hop index. A path selecting unit(140) selects a search value which is obtained by searching for a hop index table by using the next hop index as a new path.
Abstract:
An apparatus and a method for processing an Ethernet header are provided to implement an Ethernet processing function in a network communication device requiring a high speed process and to offer an Ethernet frame processing function to a router not having an Ethernet interface. An apparatus for processing an Ethernet header includes an input interface device receiving an Ethernet frame inputted from a medium access control framer. An Ethernet header analyzing device(230) analyzes the frame kind of the Ethernet frame received from the input interface device and extracts a destination and a source address. A filtering device(240) filters the destination and the source address extracted by the Ethernet header analyzing device. A frame check sequence checking device(250) checks the Ethernet frame filtered by the filtering device for data integrity. An Ethernet header removing device(260) removes the Ethernet header when a check result of the frame check sequence checking device is a normal state. An output interface device outputs a frame where the header is removed by the Ethernet header removing device to an upper processor.
Abstract:
위상 고정 검출 장치가 개시된다. 이 장치는 제어 신호에 응답하여, 기준 신호를 지연시켜 지연 기준 신호를 생성하는 가변지연부; 상기 지연 기준 신호와 궤환 신호 간의 위상을 비교하여, 상기 지연 기준 신호가 상기 궤환 신호보다 소정 임계치 이상 위상이 앞선다는 정보 및 상기 궤환 신호가 상기 지연 기준 신호보다 상기 소정 임계치 이상 위상이 앞선다는 정보를 포함하는 상기 제어 신호를 생성하는 제어신호 생성부; 및 상기 제어 신호를 기초로 위상 고정 여부를 검출하는 위상고정여부 검출부를 포함한다. 본 발명에 따르면, 위상 동기 회로의 기준 신호와 궤환 신호를 입력받아 위상 고정 상태를 검출함에 있어서, 상기 두 신호의 위상 오차의 크기에 관계없이 정밀하게 검출할 수 있다.
Abstract:
An apparatus for processing a layer integrating frame including a variable header is provided to allow a line card processing unit of a frame switch and a router system to secure the band width with more than several giga bits. An apparatus for processing a layer integrating frame includes a variable header between a physical layer, an L2 layer processing apparatus, and a network processor. The variable header compresses and inserts information into a data field area recognized by the network processor, generates a hash key, and supports a packet processing agreement for a system user. An L2 layer is a MAC(Media Access Control) layer used in Ethernet.