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| Number | Title | Issue Date |
| 5570420 | Customer premise equipment network integrator A customer premise equipment (CPE) network integrator (CNI) (20) is connected to today's integrated telephone network to provide additional and improved telephone services. The CNI (20) is connected between a CPE (10) and a network switch (30) and is conn... | 10/29/1996 |
| 5563874 | Error monitoring algorithm for broadband signaling The error performance of an ATM signaling link operating under the service specific connection oriented protocol (SSCOP) is monitored at the transmitting end of the link by attributing a penalty factor at the end of each polling interval. That penalty fac... | 10/08/1996 |
| 5555378 | Scheduling transmission multimedia information in broadband networks using a token passing scheme A scheduling system and method, which employ a token passing scheme, for scheduling transmission of multimedia information between information warehouses (IWHs) and CO clusters (CCs) interconnected by ATM switch(es). Each CO cluster employs a CC schedule ... | 09/10/1996 |
| 5550818 | System for wavelength division multiplexing/asynchronous transfer mode switching for network communication The present invention is directed to a system for the wavelength division multiplexing/asynchronous transfer mode (WDM/ATM) operation of high-capacity optical communication networks. The optical components of the network can transport vast amounts of info... | 08/27/1996 |
| 5546542 | Method for efficiently determining the direction for routing a set of anticipated demands between selected nodes on a ring communication network A method for designing a ring communication network is presented. A candidate ring defined by a candidate subset of nodes and a candidate routing is identified. A direction of communication is determined for each of a set of anticipated demands. The cost ... | 08/13/1996 |
| 5537467 | Method for forwarding a call to a temporarily utilized portable telephone A distributed service management system for providing communication services comprises a plurality of individual service management systems operated by a plurality of different service providers. Each service management system includes its own local datab... | 07/16/1996 |
| 5533009 | Bandwidth management and access control for an ATM network A bandwidth management system manages a plurality of virtual data connections within a communications network. The system includes an input for receiving data cells, wherein each cell is associated with a particular one of the virtual connections. The sys... | 07/02/1996 |
| 5532737 | Camera arrangement with wide field of view A camera arrangement (100) comprises first and second sets of one or more cameras (102, 104, 202, 204, 204') and a half-silvered mirror (130). The one or more cameras of the first set look through the half-silvered mirror--i.e., receive light that passes ... | 07/02/1996 |
| 5530939 | Method and system for broadcasting and querying a database using a multi-function module A broadcast database system module (300) is disclosed having a processor (310) and a memory subsystem (320). The processor (310) and memory subsystem (320) of the broadcast database system module (300) can cooperate to provide all functions of a broadcast... | 06/25/1996 |
| 5526370 | Weighted sum codes for error detection A new class of error detection codes has powerful error detection properties, as well as significant implementation advantages. The inventive error detection codes are used in communication protocols to protect transmitted data from corruption.... | 06/11/1996 |
| 5519774 | Method and system for detecting at a selected station an alerting signal in the presence of speech A method and apparatus for detecting a dual tone alerting signal in the presence of speech for the purpose of initiating transfer of special service information on a telephone line is described. The apparatus includes two channels for separately detecting... | 05/21/1996 |
| 5511121 | Efficient electronic money A unique electronic cash system protects the privacy of users in legitimate transactions while at the same time enabling the detection of a double spender of the same electronic coin. The electronic cash system takes advantage of a unique property of El G... | 04/23/1996 |
| 5511119 | Method and system for compensating for coupling between circuits of quaded cable in a telecommunication transmission system In a quaded cable, coupling between circuits (side circuit 1, side circuit 2, and phantom circuit) is compensated for at the receiving end of a transmission system. By transmitting known signals from the transmission end separately on each circuit, coupli... | 04/23/1996 |
| 5504837 | Method for resolving conflicts among distributed entities through the generation of counter proposals by transversing a goal hierarchy with acceptable, unacceptable, and indeterminate nodes Communication among entities such as customer premises equipment (20, 22, 28) in a telecommunications network (10) is set up through the use of agents representing each entity (20, 22, 28). Agents representing corresponding entities in the telecommunicati... | 04/02/1996 |
| 5504780 | Adaptive equalizer using self-learning neural network A channel equalizer is formed using a self-learning neural network. During a training period, the neural network is taught the channel response function. The network is then used to equalize distortions introduced into signals by the channel. The neural n... | 04/02/1996 |
| 5495360 | 1.5 μm wavelength asymmetric fabry-perot modulator with negative chirp An asymmetric Fabry-Perot modulator (AFPM) is disclosed having an operating wavelength in the 1.5 μm region used for long-haul optical transmission. The AFPM includes electro-absorption material consisting of an Alx Iny Ga1-x-y... | 02/27/1996 |
| 5490203 | Method and system utilizing a location caching strategy to locate nomadic users in a communication services system Method and system for locating nomadic users in a personal communication services (PCS) system by utilizing two strategies for locating such users and a per-user criterion for determining which, if any, of the two strategies should be used. The method and... | 02/06/1996 |
| 5487072 | Error monitoring algorithm for broadband signaling The error performance of an ATM signaling link operating under the service specific connection oriented protocol (SSCOP) is monitored by determining the maximum retransmission count (i.e., the number of times a message has to be retransmitted from a trans... | 01/23/1996 |
| 5481673 | Method for cluster routing in direct link using two associated routing tables at node or signaling transfer point Method and apparatus for cluster routing and management of information from a remote node of a communications network to a network cluster in the presence of at least one direct linkset extending between the remote node and the cluster. The communications... | 01/02/1996 |
| 5475677 | Compatible licensed and unlicensed band portable handset unit for TDMA wireless communications system In a TDM/TDMA portable radio communications system, a portable handset is compatible for operation in both a frequency-division duplexing (FDD) mode for communication in the licensed portion of the Emerging Technologies frequency band, and in a time-divis... | 12/12/1995 |
| 5455832 | Method and system for testing a sonet network element Method and system are described for testing SONET network elements (NE) against various SONET logical layer criteria or standards. A "basic" signal is developed or generated to meet many of the criteria in order to minimize the number of alarms or abnorma... | 10/03/1995 |
| 5453780 | Continous presence video signal combiner Four QCIF video input signals generated by participants in a multiparty video conference are combined in the coded domain to produce a merged CIF video output signal. When the CIF video output signal is transmitted back to each party's video terminal, a c... | 09/26/1995 |
| 5450476 | Method and system for providing nonpublished number messaging service A Nonpublished Number Messaging (NPNM) system allows a caller to leave a message for a party having a nonpublished telephone number. When a caller calls directory assistance to request a telephone number, an operator service system (OSS) switch routes the... | 09/12/1995 |
| 5438440 | Holographic code division multiple access A technique for all-optical Code Division Multiple Access (CDMA) system based on optical holography is disclosed. In this technique the energy of an incoming information light signal is spread over a spatial domain by a two-dimensional spatial encoder whi... | 08/01/1995 |
| 5437009 | Method and system for displaying status information of communications networks Method and system are provided for graphically displaying status information from alarm message generated during outages of a network such as a Common Channel Signaling (CCS) Network. The method and system include play, search, stop, filter, and pause fea... | 07/25/1995 |
| 5434700 | All-optical wavelength converter An all-optical wavelength converter comprising an optical waveguide of regions having differing non-linear optical susceptibilities such that the regions are quasi phase matched. An optical pumping signal is introduced in the waveguide, either input from ... | 07/18/1995 |
| 5434617 | Automatic tracking camera control system Methodology and circuitry for automatically effecting electronic camera movement to track and display the location of a moving object, such as a person presenting a talk to an audience. A fixed spotting camera is used to capture a field of view, and a mov... | 07/18/1995 |
| 5432373 | Magnetic spin transistor A magnetic spin transistor, usable as a memory cell, magnetic pick-up head, or a current switch, that includes a trilayer planar structure of a conductive, nonferromagnetic layer (16) sandwiched between two ferromagnetic layers (12, 14) of different coerc... | 07/11/1995 |
| 5426668 | Tetherless access to communication networks A communication system for coordinated downstream diversity transmission includes a central processing center for selecting adaptive transmitter parameters and adaptive receiver parameters to as to optimize an estimate of a transmitted data symbol receive... | 06/20/1995 |
| 5416452 | Mode diversity coupler for vertical polarization A mode coupler for vertically polarized modes comprises a first waveguide (32) having a relatively small rectangular cross-section and a second waveguide (22) having a relatively large rectangular cross-section. The first small cross-section waveguide has... | 05/16/1995 |
| 5414541 | Optical switch employing first and second ferroelectric cells with alignment layers having alignment directions offset by 45° A liquid-crystal optical beam switch comprising: a first birefringent layer (14) which divides an input beam (24) into its two polarization components; a first segmented twisted nematic liquid-crystal polarization modulator (16), the segments (30,32) of w... | 05/09/1995 |
| 5414540 | Frequency-selective optical switch employing a frequency dispersive element, polarization dispersive element and polarization modulating elements A liquid-crystal optical switch capable of switching separate optical signals in a physical input channel to a selected output channel. A diffraction grating spatially divides the input channel into its frequency components, which pass through different s... | 05/09/1995 |
| 5412396 | Driver circuit for shutters of a flat panel display A flat-panel display device 500, 600 with an active array of parallel longitudinal row backlights 520, 620 disposed in a first plane is disclosed. The row backlights sequentially emit a row of light for a fixed-duration row-interval of time t in successiv... | 05/02/1995 |
| 5410264 | Adaptive impulse noise canceler for digital subscriber lines An impulse noise canceler includes circuitry which recognizes, locates, and cancels impulse noise when it occurs in an incoming signal. Impulse noise is characterized by a shape, an amplitude, and an arrival time, any or all of which may be unknown. In on... | 04/25/1995 |
| 5406628 | Public key authentication and key agreement for low-cost terminals A method for achieving mutual authentication and session key agreement between a first party 12 which has minimal computational resources and a second party 18 which has substantial computational resources utilizes a modular square root operation for cert... | 04/11/1995 |
| 5401665 | Method of fabricating a field-effect transistor over gate electrode A field-effect transistor in which a metal gate (14) is defined on top of an insulating substrate (12). A free-standing semiconductor thin film (16), obtained by the epitaxial lift-off process, is bonded to both the top of the metal gate and the insulatin... | 03/28/1995 |
| 5388259 | System for accessing a database with an iterated fuzzy query notified by retrieval response A method and system are disclosed for evaluating imprecise database queries. At the time the imprecise query is executed, a membership function, representing the imprecise criteria of the query, is applied to entries of the databases. Data items are then ... | 02/07/1995 |
| 5386413 | Fast multilevel hierarchical routing table lookup using content addressable memory A switch memory 100 for implementing a multilevel hierarchical routing table in a switch is disclosed. The switch memory 100 includes a plurality of mask circuits 120, 121 and 122, which each correspond to one level of the multilevel hierarchy. Each mask ... | 01/31/1995 |
| 5367520 | Method and system for routing cells in an ATM switch A method and a system for routing cells in an ATM switch. The switch which is input buffered, employs a multiplicity of crosspoint switch planes operating simultaneously in parallel, and whose outputs are combined by an output-buffered second stage. A tra... | 11/22/1994 |
| 5361262 | Estimated-queue, expanded-bus communication network A distributed-queue, expanded-bus communication network and the protocol for its operation. A dual bus (42) has two counter-propagating buses (44,46) each having multiple channels (48), preferably wavelength-division multiplexed. A plurality of nodes 52 a... | 11/01/1994 |
