Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.

Abstract: The present invention relates to a method for controlling a transmission control protocol window size in an asynchronous transfer mode which determines a TCP congestion window size by using an explicit rate value in a resource management cell. According to the present invention, cells transmitted pursuant to the explicit rate value are rarely dropped or tagged by a switch algorithm, thereby reducing a ratio of transmission.

Abstract: The present invention relates to a method and apparatus for adaptive data transmission enabling data transmission in a variable transmission rate in a communication system, where a number of users share a transmission medium to transmit data in the variable transmission rate, by using a transmission capacity which is not being currently used even if allocated to some users. According to the invention, the transmission rate variation rates of each of the variable transmission rate data transmission services are controlled within the spirit of current variable transmission rate services so that the data traffic of the existing variable transmission rate transmission services which is actually unable to be forecasted can be forecasted. Therefore, the idle transmission capacity available can be forecasted so that the data can be transmitted by using the idle capacity. In this way, the transmission capacity of the system can be more efficiently used.

Abstract: Disclosed is a method for high speed rerouting in a multi protocol label switching (MPLS) network which can minimize a packet loss and enable a fast rerouting of traffic so as to protect and recover a multi point to point LSP occupying most LSPs in the MPLS network. The method for high speed rerouting in a multi protocol label switching (MPLS) network, the method comprising the steps of controlling a traffic stream to flow in a reverse direction in a point where a node or link failure occurs by using a backup Label Switched Path (LSP) comprising an Explicitly Routed (ER) LSP having a reverse tree of a protected multi point to point LSP and an ingress LSR through an egress LSR.

Abstract: An internet address system formed by introducing a E.164 number system of the ITU-T or a zip code system to IPv6 address system, and a hierarchical routing method using the same. Thus, a user can easily find an IPv6 address of a user terminal from his/her telephone number. The telephone numbers can be well linked to the IPv6 addresses, so that an internet provider can easily design and assign the IPv6 addresses. In addition, a hierarchical routing process is carried out by using the E.164 number system, thereby reducing routing time and improving a routing speed. The subscriber address can also be found out by the internet address of the subscriber. The IPv6 addresses and zip codes are well linked by applying the zip codes of the respective countries to the IPv6 address system, thereby efficiently using the information for network management and administration.

Abstract: A routing method with routing algorithms applicable to a one-level hierarchical network, including a first algorithm in which a shortest one among all paths established in association with one destination is selected, a second algorithm in which the first method is conducted in a distributed fashion to achieve a fast routing, and a third algorithm in which any one of paths established in association with one destination may be selected as a shortest path when the QoS value calculated in association therewith is more optimum than a required reference QoS value, for preventing problems caused by errors at the single path. The method also provides algorithms that are modified versions of the second and third algorithm for the multi-level hierarchical network. Accordingly, the method is advantageous in that users can select an algorithm, most suitable for the system environment, from the above algorithms.

Abstract: The invention provides a method of roaming services for global roaming subscribers in the third generation mobile telecommunication networks in which a visitor network GLR(Gateway Location Register) is connected to a home network GLR so that the home network GLR can download subscriber information from HLR(Home network Location Register) to the visitor network GLR. In this manner, the visitor network GLR is blocked from direct contact to the home network HLR in the roaming service about the terminal moved to other network and downloaded with the subscriber information stored in the home network HLR in which the terminal is registered via the GLR so that the subscriber information stored in the home network HLR can be prevented from being exposed by the visitor network GLR. The visitor network GLR is associated with the home network GLR only in contrast to conventional association with all HLR of the home network so that a signal track can be remarkably reduced.

Abstract: Disclosed is an apparatus for establishing an IP level connectivity between internet access terminals using a service gateway including a first ISP network connected at one end thereof to a first terminal having an inherent IP address and at the other end thereof to an internet network, the first ISP network including a service gateway for executing authentication of a subscriber of the first terminal in accordance with a service request of the first terminal and communication with other service gateway; a second ISP network connected at one end thereof to the internet network and at the other end thereof to an ATM network to which a second terminal having no inherent IP address is connected, the second ISP network serving to establish an IP level connectivity between the first and second terminals if the first terminal requests connection to the internet network for service use along with the second terminal.

Abstract: An apparatus and method for providing a measured rate system in an IP network is disclosed, in which a charging system is provided by a measured rate system in accordance with various quality of services provided to customers in a public internet network system.

Abstract: The present invention is directed to a method for providing a service provider number portability of a mobile phone number in which it is possible to change a mobile phone service provider without changing a mobile directory number (MDN) in a communication environment where the phone service providers use different intelligent network protocols. In the present invention, the intelligent network calls which uses different protocols are processed using a number portability database which supports the multi-protocols in order to change the service provider between the mobile phone service providers in which the mobile phone subscribers use different intelligent protocols.

Abstract: Disclosed is a communication apparatus between distributed objects comprising: a plurality of separate software buses adapted to determine whether or not a communication service of which function and property is provided in a distributed platform; a platform administrator adapted to build and administrate a communication architecture in the distributed platform; a bus manager adapted to manage both a standard of types of the plurality of software buses and a bus object instance in the distributed platform by a strategic plan and an instruction of the platform administrator; a bus trader adapted to provide a trade function through an interaction with the bus manager, and a client object and a server object of an application level; an object trader adapted to allow the client to dynamically find an appropriate server; a repository adapted to provide a function which stores persistently instance information and various types of the plurality of software buses; a bus adapter adapted to provide the client and serv

Abstract: The present invention relates to a communication network disturbance management method using a top-down method which detects, analyzes and solves a problem by analyzing a quality state in regard to whole communication network lines. The disturbance management is performed in the whole communication network, thereby managing the communication network problems which are not notified by the users. In addition, the communication network problems can be managed before the user's dissatisfaction notification or disturbance generation. Moreover, the disturbance management access method is based on service quality values, and thus it is possible to manage the communication network problem causing reduction of the service quality provided to the users. As a result, the present invention can provide high quality communication service to the users using the communication network.

Abstract: A two-dimensional round-robin scheduling method with multiple selection is provided. The two-dimensional round-robin scheduling method in accordance with an embodiment of the present invention includes following steps. First step is for checking whether a request is received from the input buffer module and building mxm request matrix r(i,j), i,j=1, . . . , m. Second step is for setting mxm search pattern matrix, d(i,j), i,j=1, . . . , m. The search pattern matrix describes search sequence, S=1, . . . , m. Third step is for initializing elements of mxm allocation matrix a(i,j), i,j=1, . . . , m. The allocation matrix contains information whether transmission request is accepted and which switching plane the accepted request uses in transmission. Fourth step is for examining a request matrix in accordance with the search sequence S and finding r(i,j) that sent a request.

Abstract: A multiwave optical buffer using a loop mirror of the present invention can transmit cells to a preferable node in accordance with electric control, without causing conflicts among the cells, when the cells having various waves reach a single node at the same time on a high-speed network. In order to prevent conflicts among the cells, the multiwave optical buffer using the loop mirror in accordance with the present invention stores cells having low priority and outputs the cells in a preferable time pursuant to the electric phase control, thereby improving efficiency of a high-speed optical communication network.

Abstract: This invention relates to a high speed packet switching controller in a telephone switching system which can suitably be applied to a packet controller having large capacity using a neural network chip and maximize the system performance by the optimized switching operation. The high speed packet switching controller comprises a row address decoder for decoding a weight raw address which is inputted thereto, a column address decoder for decoding a weight column address which is inputted thereto, a matrix array for providing the neural network using address signals provided from the row address decoder and column address decoder and outputing varied voltage in accordance with an external weight value, a neural network for producing a final crossbar switching control signal, an external input/output bus for transmitting an output signal of the neural network, and an internal neural data bus for transmitting the address signal output from the row address decoder and column address decoder to the matrix array.

Abstract: The present invention relates to a system of providing an agency service for customer management using a CTI (Computer Telephony Integration) technique and a method thereof. The system comprises a system of providing an agency service for customer management having a switchboard, a CTI server and a subscriber management module, and a call center of an enterprise mutually connected to the system. By means of such construction, the enterprise using the system can easily ascertain customer information previously constructed in the system to rapidly and effectively carry out counsel with a subscriber. The system of providing an agency service for customer management using a CTI technique can reduce costs of investment and maintenance required for expensive equipments, associated experts and the like.

Abstract: A nibble inversion and block inversion code coding and decoding method and a coding and decoding apparatus for the same.

Abstract: An optical asynchronous transfer mode ATM switch for recovering the limitation of processing capacity and performing large capacity of switching is disclosed.

Abstract: A data transmission circuit includes a cyclic check (CRC) circuit which improves operation speed of the overall system by checking errors for safe data transmission and a data rate control circuit of which the rate control portion required for data interface includes two simple counter logics to control the data rate during data interface.

Abstract: The invention relates to a method for manufacturing a super self-aligned heterojunction bipolar transistor which is capable of miniaturizing an element, simplifying the process step thereof by employing a selective collector epitaxial growth process without using a trench for isolating between elements. According to the invention, isolation between elements is derived by using a mask defining an emitter region and a second spacer. The base layer has multi-layer structure being made of a Si, an undoped SiGe, a SiGe doped a p-type impurity in-situ and Si. Also, the selective epitaxial growth for a base is not required. Thus, it can be less prone to a flow of leakage current or an emitter-base-collector short effect.