Abstract: A long-distance optical transmission system comprising pulse emitter and receiver means (1, 2) and an optical line (3) which extends between said emitter and receiver means (1, 2) and which comprises alternating segments (3a, 3b) of dispersive fibers having chromatic dispersion of opposite signs, and also having a plurality of amplifiers (4), the system being characterized in that the optical line (3) comprises a plurality of pairs of dispersive fiber segments (3a, 3b) having chromatic is dispersion of opposite signs between successive amplifiers (4), and in that the cumulative dispersion C over the majority of the segments of the optical line satisfies the relationship (R)|C|&Dgr;&ngr;2<0.3 where C is expressed in ps/nm and where &Dgr;&ngr; is the half-height spectral value of the pulses expressed in Thz.

Abstract: A telephone terminal has a large size display indicating a telephone operation display of a touch panel system and it is used, for example, in a dealing speech system of financial organizations and the like. The telephone terminal has telephone operation indication functions which control the large display, as well as a master controller for controlling the display depicting telephone operation indications (pagination keys) and a slave controller for controlling the handlings concerning communication functions in order to obtain improved communication functions of the telephone terminal proper. These of the master controller and slave controller are cooperatively functioned to control these telephone indication functions and communication functions.

Abstract: A power supply system for uninterruptedly sensitive equipment having a supply interface with a local power line, e.g., of 230V/50 Hz. It has downstream of a high voltage/low voltage transformation station, a direct connection towards at least one Uninterruptable Power Supply (UPS), enabling elimination of the Normal/Standby switch between the local electric network and a replacement source. The UPS, which comprises batteries in parallel and a quick switching device (t<20 ms), automatically ensures the launching (or triggering) of the standby source in case of breakdown of the local electric power supply network. Reciprocally a standby source, which is directly coupled with the UPS batteries, delivers the direct current required for maintaining the charge of said batteries.

Abstract: A system, method, computer program product system for providing a carrier exchange (CX) backbone to a plurality of IP carriers to pass on their over-flow traffic to another participating carrier. The system and method offers a quality-based voice over Internet Protocol (VoIP) call routing management system with centralized call accounting. The system and method connects potentially incompatible IP networks (e.g., ATM, Frame Relay, etc.) to a single backbone operated by a CX provider. The barter-like system and method is mutually beneficial to all participants by providing low cost to originating gateways and additional revenue for terminating gateways in the form of increased minutes.

Abstract: A methodology of creating integrated circuits with improved noise isolation is presented. The circuitry of an integrated circuits is separated into noise generating circuit blocks and noise sensitive circuit blocks. N-type and P-type diffusion guard rings are placed around each of the circuit blocks. Substantially overlying the N-type and P-type diffusion guard rings are power supply meshes which are intimately in contract with the guard rings below through spaced apart vias. The power supply meshes not only supply power for the circuit blocks, but also reverse-bias the diffusion guard rings for improved noise isolation.

Abstract: A microcelluar mobile communication system which performs various functions such as a centralized management of resources, a capacity increase, a Base Station Transceiver System(BTS) miniaturization, a synchronization between micro base stations, a dynamic resource management, a softer handover between cells, a grouping and ungrouping of base stations in accordance with a traffic distribution. The microcelluar mobile communication system may increase the subscriber capacity, provide the high reliable service, extend the battery life of a personal station inducing low power communication and assure the radio channel capacity so that the radio multimedia service may be accomplished in the future, by maximizing the utility efficiency of radio frequency resource through cell miniaturization. The microcelluar mobile communication system may be installed efficiently to an indoor, a building underground, an underground tunnel as well as an outdoor, and may compose the single cell also in the indoor.

Abstract: A method for the deposition of a coating layer on an optical fiber while it is being drawn. The coating layer is designed to reduce the permeability of the optical fiber to water vapor and therefore to increase its lifetime. The method is characterized in that it consists in carrying out a decomposition of a gas mixture of boron halogenide and hydrogen and/or boron halogenide and ammonia gas by a microwave plasma-assisted addition of energy and in that the operation is conducted in the presence of a carrier gas in order firstly to carry the gas mixture to a reaction medium and secondly to activate the plasma.

Abstract: The invention relates to a recording control apparatus in a dealing talk system, and aims at making it possible for a dealer to easily listen to a talk content recorded in a talk recording unit 1-29, and the invention is provided with a line control unit 1-2 to accommodate a digital line circuit 1-3 and a trunk 1-15, a talk terminal unit 1-1 connected with the digital line circuit 1-3, a talk recording unit 1-29 which is connected with the trunk 1-15 and records a talk content, an information processing unit 3-29 for managing talking control information from the talk terminal unit 1-1, and a network server 1-30 which controls the talk recording unit 1-29 on the basis of the talking control information from the information processing unit 3-29 and provides a talk voice recorded in the talk recording unit 1-29 through a telephone line to the talk terminal unit 1-1.

Abstract: The process comprises the following steps: a) pretreatment of a surface of the substrate by means of a cold gas plasma at low or medium pressure in order to clean the said surface; b) growth, from the said cleaned surface of the substrate, of a nitride barrier layer by means of a cold gas plasma made up of an N2/H2 mixture at low or medium pressure; and c) deposition, on the nitride barrier layer, of a Ta2O5 dielectric layer by chemical vapor deposition (CVD) or plasma enhanced chemical vapor deposition (PECVD).

Abstract: A digital camera with rotatable components is disclosed. In the front of camera there is provided a lens, a flash, and a viewfinder, while in the rear thereof there is provided a liquid crystal display (LCD) corresponding to lens, a control button, and the rear of viewfinder. Control button is operable to press for rotating lens, flash, viewfinder, and LCD in the same direction and into a desired angle with respect to an object. Next a shutter button on the camera is operable to press for taking a picture. This camera has the benefits of ergonomic, precise picture taking, and full covering of the object by flash.

Abstract: The telecommunications network has access switches and at least one nominal data base for mobile subscribers capable of accessing the network via several of the access switches. Each of the access switches has a table containing service data relating to fixed subscribers having terminals permanently connected thereto. The nominal data base contains, for each of the mobile subscribers, service data having the same nature as the service data relating to the fixed subscribers and mobility management data. The service data table of each access switch via which mobile subscribers can access the network receives, in addition to the service data relating to the fixed subscribers, service data relating to the mobile subscribers connected to the network via said access switch, which have been uploaded from the nominal data base during procedures to locate said mobile subscribers with the access switch.

Abstract: An electromagnetic wave attenuator for a mobile communication terminal is provided. The electromagnetic wave attenuator for a mobile communication terminal includes a corrugate structure conductor having a plurality of ridges plurality of ridges between which slots are formed, and a highly dielectric material having a relative dielectric constant of more than 50 filled in the slots.

Abstract: An apparatus and a method for video transmission in a video conferencing system in which in order to efficiently transmit the speaker's picture in meetings, conferences, workshops and the like, the text data is separately transmitted by being separated from the speaker's picture.

Abstract: An apparatus and a method for detecting channel information from wavelength division multiplexed (WDM) optical signals by using a wavelength selective photo detector. This apparatus and method can monitor channel status in a simple, rapid and economical way.

Abstract: A coaxial-based communication system connects network-side xDSL services to xDSL CPE devices and avoids interference from a noise spectrum that is degrading to xDSL performance or emission compliance on either the network or customer premises sides on the NID. The system provides an NID and a CPE interface device at the two ends of the coaxial wiring to perform a spectral relocation of the xDSL signal to a lower noise frequency band than is used for the xDSL service. Interfaces to the system are industry standard xDSL, POTS, and CATV services, while the transport medium is the normal coaxial type wiring and CATV splitters found on the customer premise.

Abstract: Automatic optical signal type identification method including the steps of: (a) converting an optical signal into an electrical signal; (b) storing a reference pattern dictionary with a plurality of reference patterns each uniquely identifying a different optical signal type; and (c) spotting a reference pattern embedded in the electrical signal for identifying the optical signal type of the optical signal.

Abstract: A process provides for searching through a written text in response to a spoken question comprising a plurality of words. The first step in the process is to transcribe the written text into a first sequence of phonetic units. Then, a spoken question is segmented into a second sequence of phonetic units. The search is conducted through the written text for an occurrence of the spoken question. The search comprises aligning the first and second sequences of phonetic units.

Abstract: A method for the time synchronization of a multi-carrier signal receiver consisting of a sequence of symbols each formed by a plurality of carrier frequencies. Each carrier frequency is modulated by a modulation coefficient. The position of some of said carrier frequencies in the time-frequency space is known to the receiver, and said frequencies are reference carrier frequencies. Each reference carrier frequency bears a reference coefficient with a value that is known to the receiver. The method includes a fine synchronization step, wherein the signal transmission channel impulse response is estimated on the basis of reference coefficients belonging to at least two received symbols. The beginning of the useful portion of each of the symbols is determined, and/or a receiver clock is controlled by analyzing the estimate of said impulse response.

Abstract: The present invention relates to a method for selecting a combination of transport formats for a composite channel comprising at least two transport channels in a mobile station. The invention finds its application most particularly in third-generation mobile telecommunication systems (UMTS). To prevent the quality of service of certain applications from being considerably degraded when combinations of transport formats become temporarily invalid, there is provision to select according to the invention a combination of transport formats making it possible to guarantee a minimum bit rate for each logical channel of the mobile station.

Abstract: The present invention relates to computer network based communication system and method in which voice/data composite communication can be made regardless of communication means, location, time, and kinds of communication appliances by using a unique and lifelong individual identification number. To this end, the present invention provides a communication system comprising a web server for managing communication information including a network identification number and a user identification number which is assigned to the user and then registered, a gateway for setting communication channels between a public network connected with telephones and an internet network connected with terminals, and a gatekeeper for authenticating a communication service required by the terminals and dynamically matching the identification number for communication with an IP address, whereby voice/data communication can be made between the telephones and the terminals.