Abstract: The present invention relates to a loose-tube, optical-ribbon cable, which comprises a central tensile-strength component situated in the center of the optical-ribbon cable; a plurality of loose tubes mounted with a bundle of optical-ribbon fibers, wherein the bundle of optical-ribbon fibers are formed by laminating multiple optical-ribbon fibers, each optical-ribbon fiber including multiple cores of optical fibers stranded in a single row and a sheath surrounding the multiple cores of optical fibers, wherein the plurality of loose tubes are stranded around the central tensile-strength component; a plurality of circle-shaped, water-absorbing members arranged in a hollow which is formed outside the pair of loose tubes neighboring each other; a water-absorbing tape for surrounding the plurality of loose tubes and plurality of circle-shaped, water-absorbing members; and, an external sheath situated in the outermost surface of the optical ribbon-cable for protecting the interior of the loose tube optical-ribbon c

Abstract: The invention relates to a multi-layer structure used in an optical communication field and its manufacturing method in which the capacitance effect between the metal patterns of a Silicon Optical Bench (SiOB) is significantly reduced. The multi-layer structure includes a dielectric layer and conductive patterns on a semiconductor substrate, such that the conductive patterns are separated from each other, wherein the dielectric layer and upper portions of the semiconductor substrate between the conductive patterns are etched out to a predetermined thickness to effectively reduce the capacitance without changing the area or structure of the metal patterns.

Abstract: A method for generating a new home zone list upon detecting the address information of a mobile user comprising the steps of receiving the address information of the mobile station; detecting target Base Transceiver Stations (BTSs) located within a predetermined distance around the mobile station. The coverage area, in which the address location is within, is divided into a plurality of sub-coverage areas. The detected BTSs are associated with each of the divided groups. The BTSs are prioritized within each of the divided groups into the first, second and third tier BTS. The new sector list is then generated for the mobile station based on the sector angle data of the first tier BTS.

Abstract: The present invention relates to measurement of cross-inertia-moment in a limited angular rotatory axis, and more specifically, to a measuring device and method of cross-inertia-moment in a limited angular rotatory axis. The measuring device includes a base plate; a pair of first supporters, each end portion being secured on the base plate through a load cell, for supporting a first rotatory axis; a second supporter installed inbetween the pair of first supporters to be able to rotate round the first rotatory axis, for supporting a second rotatory axis that is orthogonal to the first rotatory axis; and a roller installed at the inside of the second supporter, being rotatable round the second rotatory axis. Therefore, the present invention enables to measure and amend the cross-inertia-moment of multiple axis LOS (line of sight) stabilizer as well as low speed rotatory machinery.

Abstract: Disclosed is an opto-electrical cross connect device of high density including a shelf having a plurality of guide rails at its inner portions; a switch motherboard disposed on the rear surface of the shelf; an electric crosspoint switch positioned on the front surface of the switch motherboard; a plurality of switch connectors positioned on the front surface of the switch motherboard; an optical transceiver board mounted in the guide rail of the shelf; and, a transceiver connector disposed at the rear end of the optical transceiver board for connecting to the switch connector of the switch motherboard.

Abstract: Disclosed is an optical communication module comprising: an active optical device includes a first optical waveguide through which light passes; and an optical waveguide device including a second optical waveguide, the second optical waveguide having an input end surface through which the light emitted from an output end of the first optical waveguide is incident to the second optical waveguide, wherein the output end of the first optical waveguide has a first unit vector which represents a direction in which light passing a predetermined first point on the output end proceeds.

Abstract: There are provided an object-oriented exchange managing system and an exchange resource installing method. In the object-oriented exchange managing system, a user interface processor interfaces data with an operator, and an IPC conversion processor interfaces data with exchanges. A scoping function processor analyzes the resource installation request message received from the operator through the user interface processor and determines the scope of a class to be processed from a base class which module the requested resources. A filtering function processor processes attribute values in accordance with an operator-requested condition in the class. A resource installation processor generates an object instance representative of information about the corresponding resources and transmits the object instance to a corresponding exchange through the IPC conversion processor. An object data base management system stores the object instance received from the resource installation processor.

Abstract: A power amplifying apparatus for a mobile phone is provided. In the power amplifying apparatus, a power amplifier uses a transistor as a power amplifying device, and a non-volatile memory pre-records the static characteristic measurement data of the transistor. A DC bias current of the transistor is controlled according to transmission power of the power amplifier referring to the static characteristic measurement data, by changing a gate voltage of the transistor, by changing a drain voltage of the transistor with the gate voltage fixed, or by changing both the gate voltage and the drain voltage.

Abstract: A method for restricting a reverse call in a base station is disclosed. The method comprising the steps of: calculating the noise power of the base station; measuring the total receiving power of the base station; calculating a cell loading factor of the base station using a ratio of the noise power to the total receiving power; comparing the calculated cell loading factor of the base station with a threshold predetermined for call restriction, and restricting a call incoming to the base station according to the comparison result.

Abstract: Disclosed is a premises-fiber optical cable with a S-Z stranded-strength member, comprising: a plurality of inner tightly-coated optical fibers disposed at the central region of the optical cable and being S-Z type stranded; a plurality of inner yarns S-Z type-stranded for surrounding the inner tightly-coated optical fibers; a plurality of outer tightly-coated optical fibers S-Z type-stranded for surrounding the inner tightly-coated optical fibers and the inner yarns; a plurality of spirally-stranded outer yarns surround the outer tightly-coated optical fibers; and, an outer jacket disposed at the outer region of the optical cable for surrounding the outer yarns.

Abstract: An automatic quartz-tube leveling device for automatically measuring the leveling state of an optical-fiber preform on an on-line basis using a modified-chemical-vapor deposition (MCVD) technique is disclosed. A quartz tube is disposed in a horizontal supporting element such as a lathe. A measuring device is provided with a light-emitting device and a light-receiving device, interposing the quartz tube, for measuring an upper eccentric value and a lower eccentric value along a length of the quartz tube. A controller receives the measured upper and lower eccentric values from the measuring device, compares the measured values with predetermined reference values, and specifies a necessary leveling span of the quartz tube. A transfer device then moves to a necessary leveling span of the quartz tube to carry out leveling of the quartz tube, under control of the controller.

Abstract: A device and method for automatically building a database for a home zone service in a mobile communication system. The device comprising a memory and processing unit, wherein the memory includes an address location database for storing latitude and longitude data corresponding to respective addresses, and a zone database for storing zone data for the respective locations, and wherein processor includes a client registration processor for creating a client database in the memory upon the receipt of client information, and a database processor for searching the address location database for the latitude and longitude information corresponding to the client's address when the registration of a new client is requested by the client registration processor, for searching the zone database for zone data for a location corresponding to the latitude and longitude information, and for creating a home zone database in the memory by taking the zone data as the home zone data for the client.

Abstract: Disclosed is a method for building a home-zone database using data measured while moving about the home-zone service area in a mobile communication system, which includes a mobile diagnostic monitor with a GPS antenna, a mobile telephone and a base station database.

Abstract: An optical telecommunication module capable of increasing the bandwidth and decreasing the RF return loss, comprising: a stem in which a laser diode and a photo-detector are disposed; a cap for protecting the laser diode and the photo-detector in the stem, the cap including a window formed on an upper part thereof; a common lead electrically connected to both the laser diode and the photo-detector; first and second leads electrically connected to the laser diode and the photo-detector, respectively; a dummy lead being electrically floated; and, a compensation element connected between the first lead and the dummy lead, wherein the compensation element having a predetermined resistance component and a predetermined inductance component.

Abstract: A multi-destination transmission method for transmitting a short message to a plurality of mobile terminals at the receiving end is provided. According to the method, a plurality of telephone numbers corresponding to a plurality of mobile terminals at the receiving end is registered in a group. Then, if a request for multi-transmission of the short message is selected after inputting the short message, the short message is simultaneously transmitted to a plurality of the telephone numbers registered in the selected group at the receiving end.

Abstract: A method for constructing a protocol stack of a data channel processor in a transmitter, in which the protocol stack includes: an application layer having a common management interface protocol (CMIP), a remote operation service element (ROSE), and an association control service element (ACSE); a presentation layer having an abstract syntax notion 1 (ASN.1) associated with a statement of an employed language; a session layer using an X.225 standard; a transport layer for data communication; a network layer conducting a routing; and the first to the eighteenth subnets for communicating data. Here, the first and the second subnets communicate the data with a system in the first and the second directions opposite each other, and the remainder subnets communicate the data with slave processors through a DPRAM.

Abstract: A device for processing voice and data in a remote access server which provides a voice and facsimile data transmission service over the Internet. The device comprises a first interface for interfacing with a public network; a second interface for interfacing with the Internet; and, a remote access server connected to the first and second interfaces for transmitting voice and facsimile data received from the first interface to the Internet via the second interface and for transmitting voice and facsimile data received from the second interface to the public network via the first interface.

Abstract: An apparatus for producing a plurality of pilot signals corresponding to a multi-frequency assignment (FA) of a small-capacity base transceiver station supporting only the primary frequency assignment (FA1) to perform a hand-off in a CDMA communication system which supports the multi-frequency assignment (FA). The apparatus includes a first phase locked loop (PLL) synthesizer having a first PLL for synthesizing the primary frequency assignment (FA1) signal by controlling the first PLL, a second PLL synthesizer having a second PLL for synthesizing the multi-frequency assignment (FA) signals by controlling the second PLL, and an up-converter for modulating the transmission data with the primary frequency assignment signal provided from the first PLL synthesizer and producing the pilot signals corresponding to the multi-frequency assignment by modulating a signal, prior to RF modulation, with the multi-frequency assignment signals provided from the second PLL synthesizer.

Abstract: An apparatus and a method for eliminating distortion component from the output of power amplifier, comprising a baseband linearization arrangement for receiving the baseband signal, demodulating a distorted amplifier output signal, comparing the received baseband signal with the demodulated amplification output signal for providing a predistorted signal to remove the distorted component of the amplifier output signal applied by the power amplifier, and a carrierband linearization amplification arrangement for amplifying the output signal of the baseband linearization arrangement in order to linearize the distorted component of the amplifier output signal using the predistorted signal and for further linearizing the distorted component from the output of the power amplifier by extracting an error signal and amplifying the error signal to be combined the amplifier output signal in order to eliminate any distorted components in the amplifier output signal.

Abstract: A method for providing an AIN (Advanced Intelligent Network) switching system employing a thread call structure with timers for threads by providing a plurality of timer items respectively for the produced threads, wherein each of the timer items includes a thread ID region for storing the identifying data of the corresponding thread, a timer ID region for storing the identifying data of the corresponding timer, a time count region for storing the count data which represents the time taken for driving the corresponding timer item of the corresponding timer, a rear pointer region for detecting the previous timer item, and a front pointer region for detecting the subsequent timer item. The structure further providing a head item for starting a timer drive process every second, wherein the head item includes a head region for storing the head information and a front pointer region for indicating the timer item having the shortest count data.