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Hoon Jeong
Hoon Jeong, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090122778 | APPARATUS AND METHOD FOR ASSIGNING TIME SLOT FOR TRANSMITTING BEACON IN WIRELESS SENSOR NETWORK - A method and an apparatus for assigning a time slot for transmitting a beacon in a wireless sensor network operated in a beacon mode are provided. In the method and apparatus for assigning a time slot according to the present invention, the total time slots assigned to the network are divided into N blocks and a node to which a time slot is exclusively assigned, among nodes to which a specific node is capable of directly and wirelessly transmitting, is selected as a parent node, the network is divided into two or more regions centering the parent node, a block having the time slot assigned to the parent node and adjacent blocks, among the N blocks, are respectively assigned to the regions, a time slot having been yet unassigned, among the time slots belonging to the block assigned to the region to which the specific node belongs among the divided regions, is assigned as the time slot of the specific node. | 05-14-2009 |
| 20100110888 | METHOD OF PREVENTING DATA COLLOSIONS IN BEACON-ENABLED ZIGBEE SYSTEM HAVING TREE ROUTING SCHEME - Provided is a method of preventing a data collision that occurs when two or more child nodes simultaneously transmit data to a parent node in a ZigBee network having a tree routing scheme and operating in a beacon mode. In the ZigBee system having the tree routing scheme and operating in the beacon mode, data communication to the parent node is performed in a beacon frame of the parent node. Here, when several child nodes exist under a single parent node, the child nodes transmit data to the parent node at the moment of receiving the beacon of the parent node, so that the data collision may occur when the child nodes simultaneously transmit the data to the parent node in the beacon frame of the parent node. In the method of preventing a data collision, each of the two or more child nodes is set to wait for its guard time (delay time) when transmitting data to the parent node to induce a normal slotted carrier sense multiple access with collision avoidance (CSMA-CA) operation. Therefore, the data collision can be prevented. | 05-06-2010 |
| 20100272092 | APPARATUS AND METHOD FOR BROADCASTING DATA, AND APPARATUS AND METHOD FOR BROADCASTING RESPONSE DATA, OF SENSOR NODE IN WIRELESS SENSOR NETWORK SYSTEM - Provided are an apparatus and method for broadcasting data, and an apparatus and method for broadcasting response data, of a sensor node in a beacon mode in a wireless sensor network system including a plurality of nodes. According to the apparatus and method for broadcasting data, an admission application message requesting an admission of a sensor node is transmitted to the wireless sensor network system, in which time-division time slots are assigned to each of the nodes of the wireless sensor network system, wherein, in the time-division time slot, the reception function of the node is activated and sensing data is transmitted; a beacon frame is received, which includes information that indicates a broadcasting time slot among the time-division time slots, wherein, in the broadcasting time slot, the reception function of each of the nodes of the wireless sensor network system having received the admission application message, is activated at the same time; and broadcasting data is transmitted during the broadcasting time slot. Accordingly, broadcasting data can be efficiently transmitted in a beacon mode of the wireless sensor network system. | 10-28-2010 |
| 20110125922 | METHOD AND APPARATUS FOR SETTING ROUTING PATH IN WIRELESS SENSOR NETWORK - Provided are a method and apparatus for setting a routing path in a wireless sensor network. The apparatus for setting a routing path includes a neighbor table storing information of a peripheral device within wireless communication distance of a transmitter transmitting data; a searching unit sequentially searching whether at least one of an address of a destination, a parent address or ancestor address of the destination representing an address of a receiver receiving data transmitted by the transmitter exists or not in the neighbor table; and a link quality indicator (LQI) judging unit transmitting the data to the receiver when a LQI value of the address is greater than a value that is previously set in a case in which an address is searched in the searching unit. | 05-26-2011 |
| 20110164573 | METHOD AND APPARATUS FOR ASSIGNING CHANNEL IN AD-HOC NETWORK - The present invention provides a method and apparatus for assigning a channel in an ad-hoc network, which can minimize beacon collision in the ad-hoc network and prevent channel overlapping or collision, and thus a channel can be efficiently assigned. The method of assigning a channel including: obtaining join order information which is information on the order in which a first node has been joined to a second node, which is a parent node, and level information of the second node in an ad-hoc network; determining a reference value for setting a channel that is to be assigned to the first node based on an address value of the first node, which is determined based on the join order information and the level information, a level value of the first node, a channel value of the second node, which is determined based on the level information, and the join order information; and determining a channel value of the first node by dividing the reference value by the maximum number of usable channels in the ad-hoc network. | 07-07-2011 |
Hoon Jeong, Hwaseong-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100176451 | Semiconductor - A memory device includes an insulation layer, an active pattern, a gate insulation layer and a gate electrode. The insulation layer is formed on a substrate. The active pattern is formed on the insulation layer, and includes two protrusions and a recess between the protrusions. The active pattern includes a first impurity region and a second impurity region at upper portions of the protrusions distal from the substrate, respectively, and a base region at the other portions serving as a floating body for storing data. The gate insulation layer is formed on a surface of the active pattern. The gate electrode is formed on the gate insulation layer, and surrounds a lower portion of the active pattern and partially fills the recess. | 07-15-2010 |
Hoon Jeong, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100146151 | ROUTING PATH ESTABLISHMENT APPARATUS AND METHOD IN ZIGBEE NETWORK - An apparatus and method for establishing a routing path in a ZigBee network including a device in sleep mode is provided. The method includes receiving a route request command, and establishing a path with reference to sleep information of a destination device and of all devices located on a path to the destination device. Accordingly, while the devices are allowed to sleep for energy efficiency even in a non-beacon-enabled mode, an ad-hoc on-demand distance vector (AODV)-based mesh routing method which uses a route request command (RREQ) and a route reply command (RREP) can be used as is, and thus the ZigBee network can be utilized in more various application fields. | 06-10-2010 |
| 20100150070 | SENSOR NODE HAVING SELF LOCALIZATION FUNCTION AND SELF LOCALIZATION METHOD THEREOF - Disclosed are a sensor node having a self localization function and a self localization method of the sensor node. The sensor node calculates a location thereof by receiving location information measured at each of two mobile nodes at different times and using four location information of the received location information. Additional cost and power consumption required for installing additional equipment such as an anchor node, a ultrasonic transceiver and a signal amplifier are reduced. | 06-17-2010 |
Hoon Jeong, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100084710 | Capacitor-Less Dynamic Random Access Memory (DRAM) Devices - Dynamic random access memory (DRAM) devices including an insulating layer on a semiconductor substrate; a silicon layer on the insulating layer; an active region in the silicon layer; and a unit cell of a transistor on the active region are provided. The DRAM device does not include a capacitor. | 04-08-2010 |
Hoon Jeong, Yongin-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090306846 | Diagnosis System for Cylinder Deactivation Device of Vehicle and Method for the Same - A diagnosis system for a cylinder deactivation device (CDA device) may include a vehicle state detecting portion that detects operating states of a vehicle and/or an engine, a control portion that controls ON/OFF states of the CDA device according to the operating states of the vehicle and/or the engine received from the vehicle state detecting portion after determining whether the operating states satisfy a predetermined operation condition, analyzes the operating states of the vehicle and/or the engine with respect to the ON/OFF states of the CDA device, determines whether the CDA device malfunctions, and outputs diagnostic codes according to function or malfunction state of the cylinder deactivation device, and a display device that displays the function or malfunction state of the CDA device. | 12-10-2009 |
Hoon Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090274127 | METHOD FOR DETERMINING SUPERFRAME FOR BEACON SCHEDULING - Provided is a method for determining superframe to efficiently perform beacon scheduling by allocating superframe lengths which are different according to a routing depth of sensor nodes in a ZigBee based wireless sensor network. The method for determining a superframe for beacon scheduling, includes the steps of: receiving a beacon from a neighboring node and grasping information on a superframe used by the neighboring nodes; and determining a transmission time and a length of own superframe based on superframe information of the grasped neighboring node. | 11-05-2009 |
Hoon Jeong, Deajeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110138026 | OPERATING METHOD OF NETWORK NODE OF NETWORK WITH TREE STRUCTURE BASED ON DISTRIBUTED ADDRESS ASSIGNMENT, NETWORK FORMING METHOD AND SYSTEM INCLUDING NETWORK NODE - Provided is a method for operating a network node of a tree-structured network based on distributed address assignment. Addresses are assigned. It is determined whether a routing depth of the network node corresponds to a reduced node depth. It is determined whether an authority for generating an inferior node exists using the assigned address when the routing depth of the network node corresponds to the reduced node depth. The inferior node is generated using a result of the determination. | 06-09-2011 |
Hoon Jeong, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110145378 | OPERATING METHOD OF NETWORK NODE OF NETWORK WITH TREE STRUCTURE BASED ON DISTRIBUTED ADDRESS ASSIGNMENT AND NETWORK FORMING METHOD - Provided is a method for operating a network node in a specific cluster of a tree-structured network based on distributed address assignment. In the method, a non-registered node is detected. A routing depth of the network node is determined. When the determined routing depth corresponds to a reference value, a sub cluster using a cluster address is generated, and the detected non-registered node is registered as a child node in the generated sub cluster using an internal address. | 06-16-2011 |
| 20110149858 | MESH ROUTING METHOD AND MESH ROUTING APPARATUS IN BEACON ENABLED WIRELESS AD-HOC NETWORKS - There is provided a mesh routing method in beacon-enabled wireless AD-HOC networks that includes: broadcasting, by nodes constituting a wireless AD-HOC network, a beacon message loading neighbor node information on a beacon payload; managing, by a node receiving the broadcasted beacon message, its own neighbor node table by extracting the neighbor node information loaded on the beacon payload; and performing, by a source node attempting to transmit data or commands, mesh routing on the basis of its own neighbor node table. | 06-23-2011 |
Hoon Jeong, Hwaeseong-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110207289 | METHOD OF FABRICATING SEMICONDUCTOR DEVICE AND ELECTRONIC SYSTEM - Provided are a method of fabricating a semiconductor device and an electronic system. The method of fabricating a semiconductor device includes forming a well impurity region, a lower impurity region and an upper impurity region in a semiconductor substrate. The lower impurity region has a different conductivity type than a conductivity type of the well impurity region, the upper impurity region has a different conductivity type than the conductivity type of the lower impurity region, and the upper impurity region has a same conductivity type as the conductivity type of the well impurity region and has a higher impurity concentration than an impurity concentration of the well impurity region. The semiconductor substrate is etched to form lower semiconductor patterns, upper semiconductor patterns upwardly projecting from predetermined regions of the lower semiconductor patterns a first space between the upper semiconductor patterns projecting from the lower semiconductor patterns and a second space between the lower semiconductor patterns. The upper semiconductor patterns have sidewalls vertically arranged with facing sidewalls of the lower semiconductor patterns and facing each other, and the second space between the lower semiconductor patterns has a bottom surface disposed at a lower level than the lower impurity region. Top surfaces of the lower semiconductor patterns disposed between the upper semiconductor patterns are disposed at a lower level than the upper impurity region and disposed at a higher level than the lower impurity region. An isolation layer filling the first and second spaces between the lower semiconductor patterns and between the upper semiconductor patterns, respectively is formed. | 08-25-2011 |