| Patent application number | Description | Published |
|---|
| 20080309428 | Antenna with High Isolation - Provided is an antenna with high isolation. The high-isolation antenna has transmission ports of a transmission radiating body and reception ports of a reception radiating body highly isolated from each other by using a quadrature hybrid coupler. The antenna includes: a transmission radiating body having two feed points for transmitting signals; a reception radiating body having two feed points for receiving signals; a transmission hybrid coupler which is connected to the two feed points of the transmission radiating body and transmits transmission signals which have a phase difference of 90° with each other; and a reception hybrid coupler which is connected to the two feed points of the reception radiating body and receives reception signals which have a phase difference of 90° with each other. The signals leaking from the two feed points of the transmission radiating body to the two feed points of the reception radiating body are offset. | 12-18-2008 |
| 20090058604 | RFID TAG AND METHOD FOR CONTROLLING THE SAME - Disclosed are a Radio Frequency Identification (RFID) tag and a method for controlling the same which may receive/transmit data from/to an RFID reader even at a relatively long distance. The RFID tag includes a modulation unit for modulating data requested from an RFID reader to generate a first transmission signal including the modulated data, a transmission amplification unit for amplifying the generated first transmission signal to output a second transmission signal, and a transmission antenna unit for transmitting the outputted second transmission signal to the RFID reader. | 03-05-2009 |
| 20090085809 | RADIO FREQUENCY IDENTIFICATION TAG ANTENNA FOR ATTACHING TO METAL - An antenna includes a polyhedral dielectric material, a feed loop, a polygonal radiating patch, and shorting plates. The feed loop is electrically connected with a radio frequency identification (RFID) tag chip for supplying power to the RFID tag chip. The polygonal radiating patch is magnetically coupled with the feed loop for radiating the electromagnetic waves. Each of the shorting plates disconnects the radiating patch and a ground surface and controls the magnetic coupling of the radiating patch and the feed loop. Accordingly, an RFID tag that can be attached to a metal material is provided. | 04-02-2009 |
| 20090086869 | METHOD AND SYSTEM OF RECEIVING TAG SIGNAL FROM RFID READER - Disclosed are a method and system for receiving a tag signal in a Radio Frequency Identification (RFID) reader. The method includes generating an edge signal using a tag signal received from an RFID tag; extracting edge information from the generated edge signal, and generating an edge clock corresponding to the extracted edge information; and determining bit data with respect to the tag signal using the generated edge clock. | 04-02-2009 |
| 20090096582 | RADIO FREQUENCY IDENTIFICATION TAG ANTENNA USING PROXIMITY COUPLING FOR ATTACHING TO METAL - An antenna attached to an object and transmitting electromagnetic waves that are modulated by an RFID tag chip includes a polygonal dielectric material layer that is adjacent to the object, a microstrip patch that determines a resonance frequency of the antenna, a microstrip line that is electromagnetically coupled with the microstrip match, and a shorting pin that disconnects the object and the microstrip line. Accordingly, a small-sized antenna that can be attached to metal can be realized. | 04-16-2009 |
| 20090096678 | ANTENNA FOR RADIO FREQUENCY IDENTIFICATION TAG - An antenna for an RFID tag having an RFID tag chip includes a dielectric material, a radiating patch radiating a signal from the RFID tag chip, and a feed line supplying power to the RIFD tag chip through magnetic-coupling with the radiating patch. Accordingly, a small antenna that can be attached to metal can be realized. | 04-16-2009 |
| 20090121879 | ANTENNA FOR RADIO FREQUENCY IDENTIFICATION TAG - The present invention relates to an antenna for an RFID tag chip. The antenna includes a dielectric material, a radiating patch that scatters a signal from the RFID tag chip for transmitting the scattered signal, and microstrip lines having a terminal for the RFID tag chip. Accordingly, a small antenna that can be attached to metal can be realized. | 05-14-2009 |
| 20090135012 | METHOD AND SYSTEM FOR PREVENTING LOSS OR THEFT USING WIRELESS PAN OR LAN - A method and system of preventing a loss/theft using a wireless personal area network (PAN) or a wireless local area network (LAN) which can receive, from a mobile device included in a surveillance target via a gateway, a location information of the surveillance target generated by using mobile device information for the surveillance target, the mobile: device information being collected by a; sensor of the mobile device, and signal information communicated between the mobile device and a fixed device, can determine whether there is a loss or a theft by comparing surveillance target information and a permission standard, and can provide alert information including the location information of the surveillance target when there is the loss or the theft is provided. | 05-28-2009 |
| 20090140928 | RADIO FREQUENCY IDENTIFICATION TAG AND RADIO FREQUENCY IDENTIFICATION TAG ANTENNA - An RFID tag includes an antenna and a chip, and the antenna includes a first polygonal dielectric material, first and second microstrip lines partially formed in the first dielectric material, a second polygonal dielectric material stacked on the first dielectric material, and a third microstrip line partially formed in the second dielectric material. According to the present invention, the RFID tag can efficiently receive electromagnetic waves to thereby maximize a readable range. | 06-04-2009 |
| 20090141666 | WIRELESS SENSOR NETWORK USING DYNAMIC MESSAGE ROUTING ALGORITHM AND METHOD OF CONTROLLING THE WIRELESS SENSOR NETWORK - Provided is a wireless sensor network using a dynamic message routing algorithm and a method of controlling the wireless sensor network. Therefore, a network system can be provided, in which each sensor node calculates a relay probability, periodically updates the relay probability, and dynamically determines a node for relaying a message on the basis of the relay probability, so that throughput per node is improved and a media access control (MAC) layer is not needed. | 06-04-2009 |
| 20090146787 | METHOD AND DEVICE FOR SETTING RFID PARAMETER - The present invention relates to an RFID parameter setting method and device in an RFID system including a first means for comparing a first mobile country code provided by the outside and a currently set second mobile country code, and generating a control signal for changing an RFID parameter setting of the RFID system according to the RFID standard that corresponds to the first mobile country code when the first mobile country code and the second mobile country code do not correspond with each other, and a second means for setting an operational frequency of the RFID system according to the control signal. | 06-11-2009 |
| 20090146820 | RADIO FREQUENCY IDENTIFICATION TAG AND ANTENNA FOR RADIO FREQUENCY IDENTIFICATION TAG - An RFID tag attached to an object and transmitting a signal that corresponds to identification information includes an RFID tag chip that modulates the signal according to the identification information and an RFID tag antenna that transmits the modulated signal. The RFID tag antenna includes a dielectric material, a radiating patch, and a slit. The dielectric material has a polyhedral shape and includes a first surface that contacts the object and a second surface that is parallel with the first surface, the radiating patch is formed on at least a part of the second surface and radiates electromagnetic to waves, and the slit is formed on at least a part of the radiating patch to expose the dielectric material. | 06-11-2009 |
| 20090153309 | SYNCHRONIZATION METHOD BETWEEN READER AND TAG - Disclosed is a synchronization method between a reader and tag according to an example embodiment, the method including: transmitting, by the reader, a first write command message to the tag at a first time; detecting, by the tag, the first write command message from the reader at a second time and transmitting a first response message to the reader in response to the first write message; transmitting, by the reader, a second write command message including first time information of the first time to the tag; and correcting, by the tag, a clock offset using a difference between the first time and the second time. | 06-18-2009 |
| 20090153329 | METHOD OF GENERATING ACTIVATION CODE FOR RADIO FREQUENCY IDENTIFICATION TAG - Disclosed is a method of generating an activation code of a Radio Frequency Identification (RFID) tag including calculating K satisfying a condition that N is set to exceed 2 | 06-18-2009 |
| 20090153402 | REGIONAL POSITIONING METHOD AND APPARATUS IN WIRELESS SENSOR NETWORK - A regional positioning method and apparatus in a wireless sensor network (WSN) is provided. The regional positioning method in a WSN, the regional positioning method including: setting a locating premise in the WSN based on a signal strength of an anchor node; sensing an event where a sensor node, installed in a target and called a target node, joins the WSN; detecting a locating premise where the target node is located based on the sensing of the event; and recognizing a location of the target based on the detected locating premise. | 06-18-2009 |
| 20090238296 | MULTIPLE ACCESS SYSTEM AND METHOD FOR 60 GHZ WIRELESS COMMUNICATIONS SYSTEM - A control apparatus for use in wireless communications includes an antenna unit having antennas, the number of the antennas being equal to a maximum allowable number of connections in a specific frequency band; and a controller for receiving a connection request signal from each terminal attempting to connect to the control apparatus via the antenna unit, and transmitting and receiving a data signal to and from each terminal connected to the control apparatus by using a multiple-input-multiple-output scheme. The controller transmit and receive the data signal to and from each terminal connected to the control apparatus by obtaining a signal value of each antenna based on a predicted channel matrix and the number and types of terminals connected to the control apparatus via the antenna and separating the data signal for each terminal from the signal value according to the multiple-input-multiple-output scheme. | 09-24-2009 |
| 20100013638 | APPARATUS AND METHOD FOR MANAGING PRODUCT DISTRIBUTION USING SECURITY TAG - Provided is a method and apparatus for managing a product distribution. The product distribution management method may include: reading a security key of a product from a security tag attached to the product; transferring the read security key to a security server; receiving, from the security server, first authentication information that is encrypted using the security key; receiving, from the security tag, second authentication information that is encrypted using the security key; and determining whether the security tag is duplicated, based on the first authentication information and the second authentication information. | 01-21-2010 |
| 20100014673 | RADIO FREQUENCY IDENTIFICATION (RFID) AUTHENTICATION APPARATUS HAVING AUTHENTICATION FUNCTION AND METHOD THEREOF - Disclosed are an RFID authentication apparatus having an authentication function and a method thereof. An RFID authentication method includes determining, by an authentication reader, an AES key using authentication information received from an authentication tag, generating an output key, encrypting a predetermined length of confirmation data by using the output key, transmitting the encrypted confirmation data to the authentication tag, receiving encrypted confirm response data corresponding to the confirmation data from the authentication tag to decrypt the encrypted confirm response data, and comparing the predetermined length of the confirmation data with the decrypted confirm response data to verify authenticity of the authentication tag. | 01-21-2010 |
| 20100017617 | RADIO FREQUENCY IDENTIFICATION (RFID) SECURITY APPARATUS HAVING SECURITY FUNCTION AND METHOD THEREOF - Disclosed are a radio frequency identification (RFID) security apparatus and a method thereof. According to the RFID security method, a secure tag reader performs determining an AES key using security information received from a secure tag and generating an output key using the determined AES key, decrypting AES data received from the secure tag using the output key, and encrypting data to be transmitted to the secure tag using the output key and transmitting the data, and a secure tag performs generating an output key using an AES key and security information, and transmitting the security information to a secure tag reader, encrypting data to be transmitted to the secure tag reader using the output key, and transmitting the encrypted data to the secure tag reader, and decrypting data received from the secure tag reader using the output key. | 01-21-2010 |
| 20100034539 | APPARATUS FOR SYNCHRONIZING CLOCK IN REAL-TIME LOCATING SYSTEM AND METHOD THEREFOR - A highly precise clock synchronization apparatus in a real-time locating system (RTLS), includes an optical transmitting/receiving unit for receiving a clock information frame from a clock synchronization server, converting the received clock information frame in series-parallel, and transmitting/receiving the clock information data and the clock information; an offset estimation unit for detecting a preamble signal and a clock information signal from the series-parallel converted clock information frame, calculating a phase difference value by comparing the detected preamble signal with the detected clock information signal, and outputting an offset value based on the calculated phase difference value; and a clock synchronization unit for updating a local clock value to a time of the clock synchronization server based on the offset value and the clock information frame. | 02-11-2010 |
| 20100074157 | SENSOR NODE OF WIRELESS SENSOR NETWORKS AND OPERATING METHOD THEREOF - A sensor node of a wireless sensor network includes a first sensor node module for generating and processing, when it is activated, a first sensing signal to detect occurrence of an event based on the first sensing signal; and a second sensor node module for generating and processing a second sensing signal, when it is activated, to monitor state transition of the event based on the second sensing signal. Further, when the occurrence of the event is detected, the first sensor node module is inactivated and the second sensor node module is activated. | 03-25-2010 |
| 20100097242 | SYSTEM AND METHOD FOR PROVIDING POLICY BASED RADIO FREQUENCY IDENTIFICATION SERVICE - Disclosed is a system and method for providing a policy based radio frequency identification service The system for providing the policy based radio frequency identification service includes a policy vocabulary managing device for generating and managing policy vocabulary based on a policy vocabulary writer's control input, a policy performing resource managing device for generating and managing resource information for performing a radio frequency identification service policy based on a resource designator's control input, a policy rule managing device for generating and managing a policy rule sentence based on a policy user's control input, and a policy rule performing device for performing a radio frequency identification service policy by using a policy rule sentence input based on a policy user's control input. | 04-22-2010 |
| 20100134289 | RFID READER CONTROLLING DEVICE, INTERLOCKING METHOD FOR RFID READER, AND RFID READER CONTROLLING METHOD - An RFID reader controlling device based on a plurality of RFID reader protocols receives control instructions for controlling RFID readers from application devices providing services, and confirms RFID reader protocol types corresponding to control instructions to confirm whether communication channels corresponding to RFID reader protocols are generated. Further, the RFID reader controlling device transmits the control instructions to the RFID readers through the communication channels and transmits the control results of the RFID readers corresponding to the control instructions. | 06-03-2010 |
| 20100141402 | METHOD FOR RECOGNIZING RADIO FREQUENCY IDENTIFICATION TAG READER AND APPARATUS THEREOF - Provided is a method and apparatus for recognizing a radio frequency identification tag reader. In order to obtain protocol addresses of a plurality of radio frequency identification (hereinafter referred to as RFID) tag readers, a request message including a timestamp indicating a generation time is generated and transmitted, and a response message for the request message from one of the plurality of RFID readers is received. When the timestamp included in the response message satisfies a set condition, a hardware address and a protocol address of the RFID reader are extracted from the response message. | 06-10-2010 |
| 20100146273 | METHOD FOR PASSIVE RFID SECURITY ACCORDING TO SECURITY MODE - Provided are a method for passive radio frequency identification (RFID) security according to a security mode. An RFID tag transmits its own current security mode to a reader and the reader drives a security protocol depending on the current security mode of the RFID tag. Also, the reader grasps the ability of the tag and then the reader drive a protocol suitable for the ability through the security mode. | 06-10-2010 |
| 20100146511 | POLICY BASED DATA PROCESSING METHOD AND SYSTEM - Provided is a policy-based data processing system and method. A pattern analyzer of the data processing system generates a pattern handler based on a pattern, schedules the generated pattern handler based on a policy to filter and group data, generates a processing function corresponding to a process type for each data type of event data into an object module, and uses it by handling it through a pattern handler. | 06-10-2010 |
| 20100150065 | MULTIPLE PANS CONFLICT RESOLUTION METHOD IN ZIGBEE - Disclosed is a method of preventing overlap of multiple PANs in a ZigBee network. According to the method of preventing overlap of multiple personal area networks (PANs) in the ZigBee network, a first node included in a first PAN of the ZigBee network verifies whether overlap of the multiple PANs occurs by verifying packets received from neighbor nodes, identifies beacon information of a neighbor node that causes the overlap of the multiple PANs by gradually adjusting radio frequency (RF) transmission wave, and adjusts a communication range based on the beacon information. | 06-17-2010 |
| 20100201535 | APPARATUS AND METHOD FOR ASSET TRACKING BASED ON UBIQUITOUS SENSOR NETWORK USING MOTION SENSING - Provided are an apparatus and method for asset tracking based on a ubiquitous sensor network (USN) using a motion sensing. The apparatus may include: a motion sensing manager to receive motion sensing information from a sensor; a filtering processor to filter the motion sensing information based on a filtering parameter and to determine whether a motion occurs based on the filtered motion sensing information; and a location information update (LU) manager to perform LU depending on whether the motion occurs. | 08-12-2010 |
| 20100253483 | FREIGHT CONTAINER CARGO-WORKING MANAGEMENT SYSTEM AND METHOD USING RFID TECHNOLOGY - A freight container cargo-working management system and method which can use Radio Frequency Identification (RFID) technology for displaying a cargo-working location of a container by recognizing an RFID tag adhered to a container vehicle passing through a warehouse entrance is provided. A freight container cargo-working management system including: an RFID tag to include freight information and be adhered to a container; an RFID reader to be installed at a warehouse entrance for recognizing the freight information included in the RFID tag; a cargo-working location information transmitter to be installed at the warehouse entrance for wirelessly transmitting cargo-working location information of the container corresponding to the freight information recognized by the RFID reader; and a cargo-working location display to be included in a vehicle with the container attached for displaying the cargo-working location information wirelessly transmitted from the cargo-working location information transmitter. | 10-07-2010 |
| 20100265070 | APPARATUS AND METHOD THAT PREVENT COLLISION OF TAGS IN RFID SYSTEM - Disclosed is an apparatus and method for preventing a collision in an RFID system, the method including: transmitting a Query to at least one tag, verifying whether an adjustment of a slot counter is required based on a response received from the tag, adjusting the slot counter when the verifying verifies that the adjustment of the slot counter is required, and transmitting the adjusted slot counter to the tag using a QueryAdjust regardless of whether a current frame is completed. | 10-21-2010 |
| 20100277370 | APPARATUS AND METHOD FOR CONTROLLING RADIATION DIRECTION - Provided are an apparatus and method for controlling a radiation direction. The apparatus includes parasitic elements disposed in proximity to the antenna, wherein each of the parasitic elements comprises an antenna; a first portion that is inclined with respect to a prepared ground surface at a first angle and a second portion that is inclined with respect to the first portion at a second angle; a lumped element having a variable reactance, which is disposed on each of the first and second portions; and a determination unit controlling the reactance of the lumped element so as to determine the radiation direction of the antenna. By using the apparatus and the method, the antenna has various radiation directions. | 11-04-2010 |
| 20100278289 | MULTISTAGE CHANNEL ESTIMATION METHOD AND APPARATUS - A multistage channel estimation method and apparatus is provided. The multistage channel estimation method includes: receiving a data frame to compensate for a distortion of the data frame based on a first channel estimation value associated with a corresponding section of the data frame; a first step of changing the corresponding section to calculate a second channel estimation value associated with the changed section; a second step of updating the first channel estimation value based on the calculated second channel estimation value; a third step of compensating for the distortion of the data frame based on the updated first channel estimation value to count a number of compensations; and repeating the first step through the third step, when the counted number of compensations does not match a predetermined numerical value. | 11-04-2010 |
| 20110002251 | TIME SYNCHRONIZATION AND ROUTING METHOD IN WIRELESS SENSOR NETWORK, AND APPARATUS FOR ENABLING THE METHOD - A time synchronization method in a wireless sensor network, a low power routing method using a reservation scheme, and an apparatus for performing the method are provided. The time synchronization method in the wireless sensor network may include: receiving a first synchronization request command packet from a parent node that manages time synchronization for a predetermined synchronization region; receiving, from the parent node, a second synchronization request command packet that has a transmission timestamp value of the first synchronization request command packet; and performing time synchronization for a child node based on a reception time of the first synchronization request command packet, a reception time of the second synchronization request command packet, and the transmission timestamp value of the first synchronization request command packet. | 01-06-2011 |
| 20110037568 | RFID READER, RFID TAG, AND CONTROLLING METHOD THEREOF - Disclosed are an RFID reader, an RFID tag, and a controlling method thereof. The RFID tag may include a state information generator to generate state information of the RFID tag, a receiver to receive an activation command including reference state information of the RFID tag, and a controller to activate the RFID tag based on the state information and the reference state information. The RFID tag may be selectively activated according to an inner state of the RFID tag. | 02-17-2011 |
| 20110051645 | SENSOR NETWORK SYSTEM AND COMMUNICATION METHOD THEREOF - Provided are a communication method and system for sensor network. In reporting event occurrence in a real-time sensor network application, a cycle time is divided into an event announcement period and a data transmission period to provide real-time transmission performance and energy efficiency. Each of the periods is again divided into the number of slots equal to the maximum depth of a network. Respective nodes sequentially operate according to their depths in a routing tree during the event announcement period to receive the signal transmitted from the lower node. To remove sleep delay, a slot next to the signal reception slot becomes a signal transmission slot. A node sensed an event transmits a signal informing event occurrence during its signal transmission slot, and this signal includes only the address of the transmission node. When a signal does not exist in the event announcement period, no traffic occurs in the data transmission period and the upper nodes maintain a sleep state. When a signal is transmitted during the event announcement period, nodes transmitting/receiving a corresponding signal operate during the data transmission period to transfer data packets. | 03-03-2011 |
| 20110092244 | AD-HOC WIRELESS COMMUNICATION METHOD USING SECTOR ANTENNA, RECOVERY METHOD IN AD-HOC WIRELESS COMMUNICATION AND AD-HOC WIRELESS COMMUNICATION SYSTEM - Provided are an ad-hoc wireless communication method using a sector antenna, a recovery method in ad-hoc wireless communication, and an ad-hoc wireless communication system. The ad-hoc wireless communication method using a sector antenna according to an exemplary embodiment of the present invention, includes: transmitting a requesting message for setting a communication link while changing transmission power to each sector of the sector antenna; receiving a response message corresponding to the requesting message from a receiving node of each sector; configuring a routing table for the transmission power for each sector based on the received response message; and transmitting data at the transmission power for each sector by referring to the routing table. | 04-21-2011 |
| 20110106979 | DATA COMMUNICATION SYSTEM - A data communication system is provided. The data communication system includes a main processor, and at least one sub-processor or at least one peripheral device connected with the main processor according to a serial peripheral interface (SPI) method and performing an operation corresponding to a command transferred from the main processor. The connection according to the SPI method is made by one or more bus lines including e a master in slave out (MISO) line and master out slave in (MOSI) line, a slave select (SS) line, an interrupt line, and a clock transfer line. | 05-05-2011 |
| 20110130849 | SENSOR ACTUATOR NODE AND METHOD FOR HANDLING CIRCUMSTANTIAL CHANGES IN SENSOR ACTUATOR NETWORK USING SAME - A sensor actuator node includes a sensor unit for generating sensing information on circumstantial changes; a communications unit; a countermeasure information generation unit for generating countermeasure information to the circumstantial changes; and a drive unit for driving one or more actuators. When the sensor actuator node acts as a host node, the sensing information becomes main sensing information, the countermeasure information generation unit generates the countermeasure information based on the main sensing information and selectively transmits the countermeasure information to the adjacent sensor actuator nodes via the communications unit, and the drive unit drives the actuator based on the countermeasure information. When the sensor actuator node acts as a non-host node, the sensing information becomes auxiliary sensing information, and the drive unit drives the actuator based on the countermeasure information selectively transmitted thereto by the host node. | 06-02-2011 |
| 20110134756 | OPERATING METHOD OF SESOR NETWORK AND NETWORK NODE PROVIDING ROUTING MECHANISM SUPPORTING REAL-TIME TRANSMISSION OF PRIOR INFORMATION - Provided is an operating method of sensor network. The operating method detects upper network nodes of a specific network node. The operating method detects link costs between the specific network node and the detected upper network nodes, respectively. The operating method detects a transmission and reception rate for the detected upper network nodes of the specific network node. The operating method selects one of the detected upper network nodes as a parent node of the specific network node, based on the detected link costs and the detected transmission and reception rate. | 06-09-2011 |
| 20110138023 | PROGRAMMING METHOD OF NETWORK NODES IN SENSOR NETWORK AND OPERATING METHOD OF SENSOR NETWORK - Provided is a programming method of network nodes in sensor network. The programming method receives a code to be programmed in the network nodes. The programming method determines the kind of the received code. The programming method selects a programming scheme according to the determined kind of the code. The programming method programs the received code in the network nodes based on the selected programming scheme. | 06-09-2011 |
| 20110148349 | APPARATUS AND METHOD FOR CHARGING INTERNAL BATTERY IN WIRELESS SENSOR NETWORK - Provided are an apparatus and method for charging an internal battery in a wireless sensor network. A method for a slave sensor node to charge an internal battery in a sensor network includes estimating an hourly chargeable electric energy rate in a scan phase with a master sensor node, transmitting the estimated hourly chargeable electric energy rate using an association request message requesting association with the master sensor node after recognizing the master sensor node, requesting charging from the master sensor node and performing wireless charging when a power level of an internal battery requires charging, reporting the power level of the internal battery varied by the wireless charging to the master sensor node by predetermined time periods during the wireless charging, and stopping the wireless charging when the power level reported to the master sensor node reaches a predetermined power level. | 06-23-2011 |
| 20110148587 | METHOD AND APPARATUS FOR OPERATING SERVER FOR RFID READER AND METHOD FOR OPERATING RFID READER - A method and apparatus for operating a server for an RFID reader by using both an SNMP command language and an RM/RP command language, and a method for operating an RFID reader are provided. The method for operating a server for an RFID reader includes: generating a mapping table including an object of an RFID reader, a management target, and an object identifier (OID) which are mapped to each other; checking and configuring the object of the RFID reader by using an simple network management protocol (SNMP) command language; and checking and configuring the object of the RFID reader by using a reader management/reader protocol (RM/RP) command language. | 06-23-2011 |
| 20110153111 | STANDBY POWER CONTROL DEVICE AND CONTROL METHOD THEREOF - Provided is a power control device and a control method thereof for reducing power consumption. A standby power control devices includes a plurality of electronic devices each of which is operated in a standby mode and a normal mode, and a central control unit configured to monitor load power consumed by one of the electronic devices, and perform a control operation for electrically connecting or isolating the one of the electronic devices to or from a power line by referring to a result of the monitoring and each profile information of the electronic devices, wherein the central control unit controls the one of the electronic devices to be isolated or keep a connection from or to the power line when the load power consumed by the one of the electronic devices is kept as the standby mode over a reference time. | 06-23-2011 |
| 20110153865 | ENERGY-EFFICIENT COMMUNICATION METHOD IN GROUP INFORMATION-BASED SENSOR NETWORK AND SENSOR NETWORK SYSTEM USING THE METHOD - Provided are an energy-efficient communication method in a group information-based sensor network and a sensor network system using the method. A group exchanges group information and data with another group in order to provide an application service through inter-group cooperation in a sensor network. In this process, a target group is discovered, a communication path is established, and inter-group communication cycle information for energy-efficient communication is transmitted. On the basis of the group information and the communication cycle information, it is possible to minimize the network resource consumption and provide an energy-efficient inter-group communication method. | 06-23-2011 |
