Abstract: Provided is a technology for operating a radio signal positioning database for object position tracking or search. Specifically, provided is a positioning database computing method and apparatus for generating and updating positioning data constituting a radio positioning database. The positioning database computing method includes comparing collected data received from a collection apparatus with positioning data in an existing positioning database to determine similarity therebetween, updating the existing positioning database using the collected data, upon determining that the data is similar as a result of comparison, and generating positioning data in the positioning database using the collected data, upon determining that the data is not similar as the result of comparison. Therefore, it is possible to gradually update the positioning DB even with partial collected data collected newly, so that it is possible to effectively manage the positioning DB reflecting the latest positioning environment.

Abstract: An apparatus for estimating location of a location request terminal receives a location request signal including first wireless communication infrastructure measurement information through a first wireless communication infrastructure of first coverage range and a second wireless communication infrastructure measurement information through a second wireless communication infrastructure of second coverage range greater than the first coverage range, estimates different types of second wireless communication infrastructure measurement information measured at the same location as the location request terminal, generates extended second wireless communication infrastructure measurement information by combining the second wireless communication infrastructure measurement information and the estimated second wireless communication infrastructure measurement information, and determines location of the location request terminal through comparison between a location DB storing the measurement information collected thr

Abstract: A loading device capable of automatically loading one or more items and unloading the loaded items independently, and an unmanned aerial vehicle including the item loading device. The item loading device includes: a first tray pair comprising two trays each having at least one mounting plate; and an actuator assembly installed over the first tray pair and configured to drive the trays to displace in a direction away from each other or closer to each other. The item is loaded on the mounting plates of the two trays.

Abstract: An apparatus for inferring a user profile includes a data processor configured to analyze viewing patterns of sample families from received sample family data, extract viewing pattern characteristics from the analyzed viewing patterns, and generate one or more sorters by classifying the viewing pattern characteristics into groups; a target family data processor configured to generate target family viewing pattern information based on received target family data; and a profile inference component configured to generate a primary inference result by classifying the target family viewing pattern information through the one or more sorters, and inferring a specific group of members present in the target family based on the viewing pattern characteristics.

Abstract: Disclosed is a method and apparatus for deducing a viewing household member profile. According to the method and apparatus, a viewing pattern of a general viewing household is analyzed based on viewer group classification criteria generated using the standard household member profile, and thus the member profile of the viewing household may be deduced and the deduced profile may be provided, thereby effectively providing advertisements corresponding to the inclination of viewing household members.

Abstract: A system for providing image information while interworking with a plurality of photographing apparatuses converts each of at least one image transmitted from the plurality of photographing apparatuses into a frame, and inserts the coordinates of the intersection into the converted frame. Next, the system determines whether a vehicle enters the intersection based on the frame into which the coordinates of the intersection are inserted, the current travelling direction of the vehicle, and the current position coordinates of the vehicle. The system extracts image information of the road intersecting at the frame corresponding to each of at least one image, when the vehicle enters the vehicle, and provides the extracted image information to the user through a terminal in the vehicle.

Abstract: A method and an apparatus of interactive advertising service are provided. The method includes: receiving first advertising contents from a broadcasting advertisement platform; displaying broadcasting according to the first advertising contents on the overall screen together with at least one second advertisement contents interactive indicator indicating that the first advertising contents are linked with second advertising contents; receiving indicated information triggering at least one second advertising contents interactive indicator from an input device; receiving the second advertising contents indicated by the at least one second advertising contents interactive indicator from the broadcasting advertisement platform; and displaying broadcasting according to the second advertisement contents.

Abstract: In a vehicle communication system, a frame transmitting apparatus gives a transmission opportunity to an emergency frame received from an upper layer without EDCA (Enhanced Distributed Channel Access), and gives a transmission opportunity to a generic frame received from an upper layer through EDCA.

Abstract: A method and an apparatus of interactive advertising service are provided. The method includes: receiving first advertising contents from a broadcasting advertisement platform; displaying broadcasting according to the first advertising contents on the overall screen together with at least one second advertisement contents interactive indicator indicating that the first advertising contents are linked with second advertising contents; receiving indicated information triggering at least one second advertising contents interactive indicator from an input device; receiving the second advertising contents indicated by the at least one second advertising contents interactive indicator from the broadcasting advertisement platform; and displaying broadcasting according to the second advertisement contents.

Abstract: A device for allocating a channel by using wireless access in a vehicular environment in which an onboard unit is provided in a vehicle and at least one roadside unit is provided, receives a service announcement message from at least one roadside unit, uses the service announcement message to generate an available service table, determines whether the available service table has roadside unit entries for transmitting the service announcement message, and if so, compares average RSSI provided by the roadside units to select a roadside unit to access, selects a channel that corresponds to the service provider ID with the highest priority from among the service provided by the selected roadside unit, and assigns the selected channel as a service channel to exchange information with the roadside unit.

Abstract: In a vehicle communication system, a frame transmitting apparatus gives a transmission opportunity to an emergency frame received from an upper layer without EDCA (Enhanced Distributed Channel Access), and gives a transmission opportunity to a generic frame received from an upper layer through EDCA.

Abstract: A device for allocating a channel by using wireless access in a vehicular environment in which an onboard unit is provided in a vehicle and at least one roadside unit is provided, receives a service announcement message from at least one roadside unit, uses the service announcement message to generate an available service table, determines whether the available service table has roadside unit entries for transmitting the service announcement message, and if so, compares average RSSI provided by the roadside units to select a roadside unit to access, selects a channel that corresponds to the service provider ID with the highest priority from among the service provided by the selected roadside unit, and assigns the selected channel as a service channel to exchange information with the roadside unit.

Abstract: A system for providing image information while interworking with a plurality of photographing apparatuses converts each of at least one image transmitted from the plurality of photographing apparatuses into a frame, and inserts the coordinates of the intersection into the converted frame. Next, the system determines whether a vehicle enters the intersection based on the frame into which the coordinates of the intersection are inserted, the current travelling direction of the vehicle, and the current position coordinates of the vehicle. The system extracts image information of the road intersecting at the frame corresponding to each of at least one image, when the vehicle enters the vehicle, and provides the extracted image information to the user through a terminal in the vehicle.

Abstract: A high-speed Galois Counter Mode-Advanced Encryption Standard (GCM-AES) block cipher apparatus and method is provided. The apparatus can operate at a low clock frequency of 125 MHz and provide a 2 Gbps link encryption function in an Optical Line Termination (OLT) and an Optical Network Unit (ONU) of an Ethernet Passive Optical Network (EPON). 11-round block cipher of 128- bit input data is implemented using an 8-round Counter-AES (CTR-AES) block cipher module and a 3-round CTR-AES block cipher module, so that it is possible to provide a 1 Gbps link security function for an input frequency of 62.5 MHz and a 2 Gbps link security function for an input frequency of 125 MHz.

Abstract: An apparatus and method for providing a security function of frames transmitted between optical network terminals (OLTs) and optical network units (ONUs) in an Ethernet passive optical network (EPON) providing media access control (MAC) services are provided.

Abstract: An authentication method for link protection between an OLT and an ONU newly connected thereto in an EPON, which is implemented in a data link layer to which cryptography is applied. First, an authentication key is distributed to both the OLT and an ONU. The OLT (or ONU) generates first and second random values, generates an authentication request frame containing the random values, and transmits it to the ONU (or OLT). The ONU generates a first hash value according to a hash function using the random values contained in the request frame, and transmits an authentication response frame containing the first hash value to the OLT. The OLT compares the first hash value with a second hash value calculated by it according to the has function using the two random values and an authentication key distributed to it, and transmits an authentication result frame to the ONU.

Abstract: A method for controlling a security channel for reducing system load by extending the use period of a security association key is provided. In this method, an upper bit initial value of an initialization vector of an encryption algorithm and a using range thereof are shared between a transmitting side and a receiving side when a security channel is created. Then, a secure association is created between a transmitting side and a receiving side by setting an association number, a next packet number which is a lower bit value of an initialization vector, and a secure association key. Afterward, a packet number is modified whenever a frame is transmitted until all of packet numbers are used. When all packet numbers are used, the upper bit value of the initialization vector changes.

Abstract: A method for hybrid media access control for vehicle communication is provided. The method divides a radio channel into time slots, which are predetermined time units, and sets terminals as owners or non-owners for the divided time slots to be able to access the channel. Accordingly, it is possible to reduce the probability of contention by distributed access to the slots and provide a MAC protocol having excellent performance.

Abstract: A data transmission system in an EPON includes a parser classifying frames generated in each block, and transmitting the frames to a block. A scheduler performs multiplexing of frames, then, during a transmission time permitted by an OLT, determines a transmission sequence of the frames and transmits the frames. A MPCP slave processes messages transmitted from the OLT, generates response messages on the transmitted messages, and maintains time synchronization with the OLT A processor interface conveys frames transmitted from the OLT to a processor, frames primitives transmitted from the processor, and transmits the primitives to the OLT. A register stores a value used during generation of frames in each block, a value for system control, and a value acquired from MPCP control frames.

Abstract: A method and device for controlling security of a communication channel between an OLT and an ONU in a secure channel control system of EPON formed of the OLT and the ONU having a cryptographic module, a key management module and a transmitter/receiver for transmitting/receiving frames, the method comprising the steps of: a) distributing a key between the OLT and the ONU; b) transferring the distributed key to the encryption modules of the OLT and ONU; c) activating a corresponding encryption module using the distributed key at one of the OLT and the ONU which starts a security function activation; d) transmitting an encryption module information message including activation state information of the corresponding encryption module from the side (transmitting side) having the activated encryption module to an opponent side (receiving side); and e) activating an encryption module by checking activation state information of the encryption module at the receiving side.