Abstract: An innovated transimpedance amplifier circuit consists of a buffer circuit, a simulation resistance circuit, and an amplifier circuit. The buffer circuit for inputting a signal circuit is constituted by two FETs and a resistor, and has a high current input efficiency and function of widening circuit frequency band. The simulation resistance circuit is constituted by a resistor, two buffer units, a coupling capacitor, and a biasing resistor. When operating at a low frequency, the simulating resistance circuit permits a large amount of background DC to flow through; on the other hand, when operating at a high frequency, this circuit can improve the signal coupling efficiency and reduce foreign signal output voltage. On the whole, by the circuit of the present invention, both the detecting sensitivity and the amplification factor of the signal current can be significantly improved.

Abstract: A system and a process arranges equitable-loss data packets in a high-volume asynchronous transfer mode (ATM) system and establishes the output order of the packets. There are a plurality of inflowing data packet streams, a minimum quantity ri of each incoming flow being reserved. At all times, there is a ratio K(t) between two parts of each incoming data packet flow. One part is a quantity of packets &Dgr;xi(t) allocated above the minimum reserve quantity ri. The other part ei(t) is an instantaneous quantity &Dgr;xi(t) above the minimum reserve quantity ri.

Abstract: A method, in a data transmission system, for optimizing an equalizer used to equalize a signal transmitted through a distorting channel, where the method comprises the calculation of a maximal projection from one subspace of a vector space upon another subspace of that vector space. These projections may be carried in either direction, and the preferred direction from which subspace should the projection be carried out, is determined from the dimension of each of the two subspaces.

Abstract: The present invention relates to a spread spectrum modulation using discontinuous spreading codes. The spectrum spreading codes used are sequences of chips wherein at least one chip has the value 0. These codes are called discontinuous spreading codes. Each of the chips with value 0 in the discontinuous spreading code generates a transmit power approaching zero for the corresponding transmitted signal.

Abstract: An optical filter using alternating layers of materials with “low” and “high” indices of refraction and deposited with atomic layer control has been developed. The multilayered thin film filter uses, but is not limited to, alternating layers of single crystal, polycrystalline or amorphous materials grown with self-limiting epitaxial deposition processes well known to the semiconductor industry. The deposition process, such as atomic layer epitaxy (ALE), pulsed chemical beam epitaxy (PCBE), molecular layer epitaxy (MLE) or laser molecular beam epitaxy (laser MBE) can result in epitaxial layer by layer growth and thickness control to within one atomic layer. The alternating layers are made atomically smooth using the patent pending Chemical Reactive-Ion Surface Planarization (CRISP) process. Intrinsic stress is monitored using an in-situ cantilever-based intrinsic stress optical monitor and adjusted during filter fabrication by deposition parameter modification.

Abstract: An optical filter using alternating layers of materials with “low” and “high” indices of refraction and deposited with atomic layer control has been developed. The multilayered thin film filter uses, but is not limited to, alternating amorphous layers of atomically controlled Si (n=3.56) as the high index material and diamond-like carbon (DLC, n=2.0) as the low index material. The Si layers are grown with a self-limiting pulsed molecular beam deposition process which results in layer-by-layer growth and thickness control to within one atomic layer. The DLC layers are produced using an ion-based process and made atomically smooth using a modified Chemical Reactive-Ion Surface Planarization (CRISP) process. Intrinsic stress is monitored using an in-situ cantilever-based intrinsic stress optical monitor and adjusted during filter fabrication by deposition parameter modification.

Abstract: The present invention concerns a local mobile access network, of the kind that comprises a distribution network (RDL) formed by a plurality of nodes (NIE), each node (NIE) being connected to a concentrator (CTR) which is connected to at least one radio terminal (BR) designed to communicate with mobile units linked with said terminal (BR), at least one of said nodes (NIE) of said distribution network (RDL) being connected via routing equipment (PONT) [bridge] to a virtual channel switch (VCX).

Abstract: A reciprocating optical modulation system includes a device that modulates light of a predetermined frequency by an integer multiple n to produce a group of nth order sidebands thereof; a device that modulates the nth order sidebands to produce (n+1)th order sidebands; and a device that selects at least part of the (n+1)th order sidebands.

Abstract: An oxygen ion process, Chemical Reactive-Ion Surface Planarization (CRISP), has been developed which enables planarization of thin film surfaces at the atomic level. Narrow/broad band filters produced with vacuum deposited multilayered thin films are designed to selectively reflect/transmit light at specific wavelengths. The optical performance is limited by the ability to control the individual layer thickness, the “roughness” of the individual layer surfaces and the stoichiometry of the layers. The process described herein will enable reduction of surface roughness at the interfaces of multilayered thin films to produce atomically smooth surfaces. The application of this process will result in the production of notch filters of less than 0.3 nm full width at half maximum (FWHM) centered at the desired wavelength.

Abstract: The present invention relates to a data vending machine system and a method thereof, and in particular to a data vending machine system and a method thereof which are capable of selecting a certain music file, recording the selected music file onto a recording medium and printing a selected image and character message on a surface of the recording medium. The present invention includes a host computer for storing a digital music file and a plurality of remote data vending machine connected with the host computer. The data vending machine includes at least one listing and reserving apparatus for providing a reservation function of the music files selected by the customer, a database and fabrication control apparatus for storing a part of the music files stored in the host computer and recording the selected music file onto the recording medium, and a charge paying unit.

Abstract: A method for predicting radio-wave propagation loss values of points located in a service area of a base station, includes the steps of: (a) calculating radio-wave propagation loss values of points located along with initial and next radial lines based on parameters defined by a user; (b) designating one of initial missed points as a target point; (c) searching first and second mapping points; (d) calculating radio-wave propagation loss values of the first and second mapping points; (e) calculating radio-wave propagation loss value of the target point by using the radio-wave propagation loss values of the first and second mapping points; (f) designating another initial missed point as the target point and repeating said steps (c) to (f) until radio-wave propagation loss values for all the initial missed points are calculated; and (g) designating the next radial line as an initial line and repeating said steps (a) to (g) to calculate the radio-wave propagation loss values of the radial points located on the ra

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 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

Abstract: A method of and system for processing calls to a wireless unit determines if the wireless unit is in a “page-only” mode or otherwise unavailable to receive the call. If said wireless unit is unavailable to receive the call, system determines if the calling party would like to send a page to the wireless unit. If so, the system sends a short message to the wireless unit. The short message identifies the calling party and provides an option to receive the call. When the wireless unit receives the short message page, the called party can elect to receive the call by sending short message response to the system. When the system receives the short message response, the system completes the call to said wireless unit if the short message response indicates selection of the option to receive the call.

Abstract: The Enhanced Network Subscriber Service (ENSS) operates with a public switched telephone network 200. A caller 112 enters a number which is in service, but belonging to subscriber 114 who is a registered member of the ENSS. The call triggers an intercept at the SW 110. The SW 110 signals the CCP. The CCP 116 searches the NSHDB 108 for the called number and its subscribers, past and present, and their associated access codes. If the called number is found, the CCP 116 signals the AS 120 to request an access code from the caller. An Audio System 120 conducts a dialog with the caller to obtain the required access code, using either DTMF or voice recognition, and forwards the access code to the CCP 116. The CCP 116 compares the submitted code to the access code(s) for the current subscriber. If it matches one of these codes, the CCP 116 conferences in the number corresponding to the code, and drops off the call.

Abstract: A method and device for encoding a digital audio-signal divided into a succession of blocks according to a LPC “forward” and “backward” analysis respectively under a choice criterion. For coding each current block, the choice criterion is established by defining the degree of stationarity of the digital audio-signal according to a stationarity parameter belonging to a maximum and a minimum stationarity range value. An analysis choice value is established from a decision function and this stationarity parameter and thus applied to the digital audio-signal to have this audio digital signal encoded by “backward” LPC filtering for stationary zones. The “forward” and “backward” filtering mode are thus performed in relation to the degree of stationarity of the audio digital signal, the amount of switching from one to the other filtering modes being thus limited.

Abstract: A method for providing personal information which can overcome the duplication and redundancy of personal information and regional limitation, includes building a Computer Telephony Integration (CTI) information database, a personal information database, and a destination information database in a Service Control Point (SCP), to provide the personal information to CTI destination terminals in an intelligent network; transferring, by a Service Exchange Point (SSP), a calling line identification (CLI) and a dialing number (DN) to the SCP when an originating subscriber dials, retrieving a personal information and a destination information from said databases, and transferring the CLI and the retrieved personal information and destination information to the SSP; and providing, by the SSP, the CLI and the personal information to the destination terminals.

Abstract: A process for the anisotropic etching of a dielectric organic polymer material using a plasma is provided. The gas phase of the plasma may include a gas mixture of O2/NH3, O2/H2O, O2/CH4 or O2/H2. The oxygen concentration of the gas mixture may be less than 40% by volume. The process may include the fabrication of metal interconnects in a damascene-type structure of an integrated circuit.

Abstract: Data communication between a processing unit and external means may take place via a plurality of data streams. Means check the mutual consistency of said streams and report and correct abnormalities. This self-synchronization is achieved by inserting separators into the data streams to separate the data, and by means of a freezing mechanism for freezing the internal operation of the processing unit.

Abstract: In a generic, end-to-end address resolution methodology, destination addresses in one format are translated into local addresses of different formats for purposes of routing calls across a plurality of interconnected networks which use different address formats. Translation of addresses is accomplished through either database query or by conversion algorithm. To facilitate routing across a particular network, the signaling message of the call is repacked with the local address as the routing address. The original destination address is preserved and carried transparently across that network. The signaling message is then repacked with the destination address as the routing address. Bi-level addressing schemes are supported, so that a network-level destination address and user-level destination address may both be carried transparently across a particular network.