Abstract: A stereo display panel, according to the present embodiment, has a plurality of unit pixels which are defined and enables an n perspective, wherein the n is an integral that is greater than or equal to 2 and is a multiple of integral p and integral q, wherein a q number of unit pixels that are adjacent in a row direction form one unit row, and a p number of the unit rows are adjacent in a column direction so as to enable the n perspective. When the n is the sum of integral z and integral y, an image for enabling the n perspective comprises the z number of input images and the y number of compensation images.

Abstract: Provided are a stereo display panel, an apparatus for stereo display, and a method for displaying an image. The stereo display panel defines a plurality of unit pixels and implements a plurality of views. Here, q unit pixels adjacent to each other in a row direction form one unit row, and q is an integer. p unit rows adjacent to each other in a column direction implements the plurality of views, and p is an integer. When a product of the integer p and the integer q is n, the integer n is a multiple of 2. An image implemented in the stereo display panel includes z basic images and (n?z) compensation images.

Abstract: According to one embodiment of the present invention, a parallax barrier is to be disposed one side of a display panel in which a plurality of unit pixels is defined and which achieves n views. The parallax barrier comprises a plurality of light-transmitting units and light-blocking units corresponding to said plurality of unit pixels, respectively. n is an integer larger than 2, and one unit pixel corresponding to one light-transmitting unit and m unit pixels corresponding to the light-blocking units are alternately arranged in rows, wherein m is obtained by subtracting 1 from q, which is in turn obtained by dividing n by p, which is a divisor.

Abstract: According to one embodiment of the present invention, a stereoscopic display apparatus comprises: a display panel in which a plurality of unit pixels is defined and which enables n views; and a parallax barrier disposed on one side of the display panel. n is an integer larger than 2, and p and 1 are divisors of said n. In said display panel, q unit pixels arranged adjacently to one other in rows constitute one unit row, and said n views are achieved by means of p unit rows arranged adjacently to one another in columns.

Abstract: Provided are an apparatus and method for increasing operation time in an IEEE802.15.4-2006 beacon based wireless sensor network (WSN) with respect to the same amount of power consumption used by coordinators included in a WSN, by reducing unnecessary standby power consumption required during an active period of a super frame in a beacon-enabled mode.

Abstract: 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.

Abstract: Provided are a localization apparatus for recognizing a location of a node in a sensor network and a method thereof. The method includes the steps of: a) selecting reference nodes from a plurality of anchor nodes to be used for triangulation; and b) obtaining location information of a target node by performing triangulation using the selected reference node, wherein in the step a), the reference nodes are selected by removing anchor nodes having obstacle factor from a plurality of the anchor nodes where the obstacle factor causes error in a distance measured by the target node.

Abstract: 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.

Abstract: 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.

Abstract: Provided are an apparatus and method for increasing operation time in an IEEE802.15.4-2006 beacon based wireless sensor network (WSN) with respect to the same amount of power consumption used by coordinators included in a WSN, by reducing unnecessary standby power consumption required during an active period of a super frame in a beacon-enabled mode.

Abstract: 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.

Abstract: A node for self localization, a clustering method using the same, and a localization method are provided. The node, which is located in a specific space so as to constitute a sensor network, includes a location information messaging unit which receives one or more location information messages including information on spatial locations of one or more neighboring nodes in the sensor network from the neighboring nodes in the sensor network; a distance calculator which calculates a first distance to the neighboring node on the basis of the location information included in the received location information messages and calculates a second distance to one or more neighboring nodes on the basis of the received time or intensity of the message on the location information; and a clustering unit which forms clusters of the node and a plurality of neighboring nodes in which the difference between the first and second distances is less than a predetermined threshold.

Abstract: 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.

Abstract: 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.

Abstract: Provided are a localization apparatus for recognizing a location of a node in a sensor network and a method thereof. The method includes the steps of: a) selecting reference nodes from a plurality of anchor nodes to be used for triangulation; and b) obtaining location information of a target node by performing triangulation using the selected reference node, wherein in the step a), the reference nodes are selected by removing anchor nodes having obstacle factor from a plurality of the anchor nodes where the obstacle factor causes error in a distance measured by the target node.

Abstract: A node for self localization, a clustering method using the same, and a localization method are provided. The node, which is located in a specific space so as to constitute a sensor network, includes a location information messaging unit which receives one or more location information messages including information on spatial locations of one or more neighboring nodes in the sensor network from the neighboring nodes in the sensor network; a distance calculator which calculates a first distance to the neighboring node on the basis of the location information included in the received location information messages and calculates a second distance to one or more neighboring nodes on the basis of the received time or intensity of the message on the location information; and a clustering unit which forms clusters of the node and a plurality of neighboring nodes in which the difference between the first and second distances is less than a predetermined threshold.

Abstract: An ion implanting system and a wafer holding apparatus therefor are provided. The ion implanting system includes x- and y-axis rotating parts; first and second angle measuring circuits; and a controller. The x-axis rotating part rotates a main surface of a wafer about an x-axis, and the y-axis rotating part rotates the main surface of the wafer about a y-axis. The first angle measuring circuit is rotated along with the main surface of the wafer and measures a tilt angle of the main surface of the wafer with respect to the x-axis. The second angle measuring means is rotated along with the main surface of the wafer and measures a rotating angle of the main surface of the wafer with respect to the y-axis. The controlling part, when the measured tilt angles are different from target tilt angles, controls the x- and y-axis rotating parts such that the measured tilt angles are equal to the target tilt angles.

Abstract: The present disclosure discloses a control system for protecting external program codes, which can prevent the program codes of an external ROM from being leaked by encrypting address signals and data codes. The control system for protecting the external program codes includes an external ROM configured to store the program codes, and a micro-controller configured to read and to process the program codes from the external ROM. The external ROM stores the encrypted program codes, and the micro-controller decrypts and uses the encrypted program codes from the external ROM. Here, the micro-controller reads the program codes from the external ROM and uses encrypted address signals. The external ROM stores reordered program codes according to the encrypted address signals.

Abstract: An ion implanting system and a wafer holding apparatus therefor are provided. The ion implanting system includes x- and y-axis rotating parts; first and second angle measuring circuits; and a controller. The x-axis rotating part rotates a main surface of a wafer about an x-axis, and the y-axis rotating part rotates the main surface of the wafer about a y-axis. The first angle measuring circuit is rotated along with the main surface of the wafer and measures a tilt angle of the main surface of the wafer with respect to the x-axis. The second angle measuring means is rotated along with the main surface of the wafer and measures a rotating angle of the main surface of the wafer with respect to the y-axis. The controlling part, when the measured tilt angles are different from target tilt angles, controls the x- and y-axis rotating parts such that the measured tilt angles are equal to the target tilt angles.

Abstract: A sense circuit for multi-level flash memory cell includes a control signal generator for generating a plurality of voltage control signals, a clock signal having constant period and a plurality of control pulses according to a sense amplifier enable signal; a control voltage generator for generating multi-steps voltage according to the clock signal and the plurality of voltage control signals, sequentially supplying the multi-steps voltage to a program gate of the memory cell, generating a reference voltage according to the sense amplifier enable signal and supplying the reference voltage to a program gate of a reference cell; and a sense amplifier for sequentially comparing a plurality of data stored in the memory cell and a data of the reference cell, storing the result according to the control pulse and converting it into binary data.