Patent application number | Description | Published |
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 |
20110276738 | SENSOR NODE INCLUDING GENERAL-PURPOSE INTERFACE PORT AND PLUG AND PLAY FUNCTION, SENSOR BOARD INCLUDING GENERAL-PURPOSE INTERFACE PORT AND SENSOR DEVICE DRIVER, GENERAL-PURPOSE INTERFACE PORT, AND OPERATION METHOD OF SENSOR NODE, SENSOR BOARD, AND GENERAL-PURPOSE INTERFACE PORT - Provided is a general-purpose interface port that may interface with a sensor board including multiple types of sensor device drivers and download a sensor device driver from the sensor board, and a sensor node that may recognize a type of sensor included in the sensor board using the downloaded sensor device driver, the sensor node including a micro control unit that may process sensing data received from the sensor board, thereby providing a plug and play function between a micro control unit of a sensor node and a sensing unit including a sensor board in a Ubiquitous Sensor Network (USN) or a Wireless Sensor Network (WSN). | 11-10-2011 |
20120014411 | CONSTANT AMPLITUDE DECODING APPARATUS AND METHOD FOR MULTIPLEXED DIRECT-SEQUENCE SPREAD COMMUNICATION SYSTEM - A constant amplitude decoding apparatus and method for multiplexed direct-sequence spread spectrum communication system are provided. The constant amplitude decoding apparatus includes: a despreading and demultiplexing module receiving a data stream of a constant amplitude and despreading and demultiplexing the received data stream to restore it to a 2D signal; a decoding module first performing a vertical decoding on the 2D signal and then performing horizontal decoding thereon; a control module determining whether to repeatedly perform vertical decoding and horizontal decoding; and a bit stream information output module outputting the decoding results from the decoding module as a bit stream. | 01-19-2012 |
20120014414 | APPARATUS AND METHOD FOR MANAGING CHANNEL RESOURCE IN BEACON-ENABLED WIRELESS PERSONAL AREA NETWORK (WPAN) - Provided are a node device of a beacon-enabled Wireless Personal Area Network (WPAN) managing a channel resource and a method thereof. The node device may generate a pseudo random binary sequence (PRBS) and generate a hopping sequence based on a number of available channels using the PRBS, thereby generating a hopping sequence having a characteristic of pseudo randomness and selecting a channel to be hopped, using the hopping sequence. | 01-19-2012 |
20120099575 | APPARATUS AND METHOD FOR COMPLEX COMMUNICATION - A complex communication apparatus transmits/receives voice information with other complex communication apparatuses through a set voice channel. The complex communication apparatus broadcasts a signaling packet expressing a destination identifier representing a desired communication type of one-to-one communication, group communication, and broadcast communication with other complex communication apparatuses and information of the set voice channel and performs voice communication with a complex communication apparatus corresponding to a destination identifier of other complex communication apparatuses, having received the signaling packet. | 04-26-2012 |
20120155326 | WIRELESS SENSOR NETWORK SYSTEM AND COMMUNICATION METHOD THEREOF - In a wireless sensor network system including at least one sensor network, when a network message received from a sensor node of a sensor network corresponds to a predetermined service, the wireless sensor network system forms a wireless local area network (WLAN) overlay network which is based on a WLAN system within a service area at which the sensor node is located. Data corresponding to the predetermined service is transmitted and received through the WLAN overlay network. | 06-21-2012 |
20120230337 | METHOD AND APPARATUS FOR PACKET CALL SETUP - An IP packet forwarding server forwards an IP data packet between a user terminal and a machine-type communications (MTC) device allocated with a private internet protocol (IP). Such an IP packet forwarding server allocates a call identifier for connection between the user terminal and the MTC device, sets up a packet call to the MTC device and the user terminal using the call identifier, obtains packet forwarding information while setting up the packet call to the MTC device and the user terminal, and forwards an IP data packet between the MTC device and the user terminal using the packet forwarding information. | 09-13-2012 |
20130156084 | RECTIFIER, RECEIVED SIGNAL STRENGTH INDICATOR, AND RECEIVER - A received signal strength indicator is provided. The received signal strength indicator includes a plurality of differential amplifiers forming an amplifier chain for amplifying differential signals and a plurality of rectifiers for rectifying signals output from the plurality of differential amplifiers and the differential signals, and a low pass filter for combining the signals rectified by the plurality of rectifiers to output received signal strength. Each rectifier includes a class AB voltage-current converter for converting a differential voltage into a current, and two triode transistors. | 06-20-2013 |