Patents Assigned to AND Communications
  • Patent number: 6560329
    Abstract: An automatic call distribution system routes calls from a communications network that provides call arrival data and a controllable routing capability. The system includes several agent stations, a call server, and a routing controller. Each agent station has a processor and a communication element to receive calls routed thereto. The call server uses telephony lines to receive the call arrival data and to direct the routing capability of the network. The call server has a caller prompting unit to request and receive information from a caller. The call server generates call information from the information from the caller and/or the call arrival data. The routing controller receives agent status data from the agent stations and the call information and selects an agent station from the call information and the agent status data. The routing controller causes the call server to direct the network to route the call to the selected agent station.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: May 6, 2003
    Assignee: Teloquent Communications Corporation
    Inventors: Lawrence J. Draginich, Jeffrey A. Fried, Richard G. Plummer, Peter N. Vicars
  • Patent number: 6560231
    Abstract: A multiplex system for multiplexing packets into ATM cells to be transmitted, which can implement effective use of channels corresponding to irregular traffic qualities in services with various types of quality conditions in an actual environment. In response to a connection establishment request (S402), current required bandwidths B1, . . . , Bm are changed to B′1, . . . , B′m by adding the new connection, which causes bandwidths X1, . . . , Xm which are assigned to the channels to be changed. When the desired bandwidth including the requested connection is less than an available bandwidth of the corresponding channel, an assigned bandwidth change processing (S406) is activated to assign new bandwidths in accordance with desired bandwidths. The bandwidth assignment change is carried out by changing ratios of extraction rates of packets from the buffers in the multiplex system.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 6, 2003
    Assignee: NTT Mobile Communications Network, Inc.
    Inventors: Hiroshi Kawakami, Hiroki Morikawa, Fumiaki Ishino
  • Patent number: 6559997
    Abstract: An optical transmitter for use in an optical transmitting system based on PDS (Passive Double Star) technology, does not erroneously output an optical signal when the optical transmitter is powered on/off. The optical transmitter has a current source 1 for outputting a drive current having a magnitude corresponding to an input control signal, a Laser diode (LD) for generating an optical output signal based on the received drive current, a modulator 9 for controlling the supply and cutoff of the drive current to the Laser diode (LD), a source voltage detector 3 for monitoring a source voltage to detect whether the source voltage is lower than a predetermined voltage, and a switch circuit 4 for outputting a control signal to the current source 1 to stop the supply of the drive current when the source voltage is determined to be lower than the predetermined voltage.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: May 6, 2003
    Assignees: Hitachi Ltd., Hitachi Communication Systems, Inc.
    Inventors: Shigeru Tokita, Atsushi Hasegawa, Takahiro Hamagishi
  • Patent number: 6560195
    Abstract: A scheduling apparatus includes a server for providing service to entities. The apparatus includes a mechanism for determining whether an entity that is to receive service at a future time from the server will be in conformance with a predetermined criteria at the future time when the entity is to receive service from the server. The apparatus includes a scheduler mechanism for scheduling when entities are to receive service from the server unless the determining mechanism determines the entity is not in conformance. A method for scheduling entities in an ATM network. The method includes the steps of receiving a session of an entity in a memory of an ATM switch connected to the ATM network. Then there is the step of scheduling the session for service by a server of the ATM switch. Next there is the step of determining with a determining mechanism whether the session will be conforming in terms of compliance to traffic contract of the ATM network in the future.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: May 6, 2003
    Assignee: Marconi Communications, Inc.
    Inventors: Debashis Basak, Jay P. Adams
  • Patent number: 6560245
    Abstract: In a network of SDH equipments (e.g. synchonous multiplexers add-drop or SMA) for the communication of signals comprising data, a synchronization signal for synchronizing the data and a synchronization status message (SSM) indicating the quality of the source of the synchronization signal, when a synchronization signal is output via a sychronization signal output (SSO) to a stand-alone synchronization equipment (SASE) for conditioning and subsequently input via a synchronization signal input (SSI), the SSM information may be lost. The invention provides means for associating, within the SDH equipment, the revelant SSM with the synchronization signal input at the SSI.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: May 6, 2003
    Assignee: Marconi Communications Limited
    Inventor: Iain J Slater
  • Patent number: 6560226
    Abstract: A system and method for caching local number portability (LNP) information comprises an LNP cache that can be located in a signaling processor. The LNP cache is a memory cache that contains the LNP information, such as the dialed number (DN) and the location routing number (LRN) for an associated DN. The signaling processor receives and processes call signaling. If the signaling processor determines that a DN may be assigned to a portable communication device, such as a portable signaling processor, then the signaling processor accesses the LNP cache to determine the LRN for the DN, if it exists. The LNP cache returns the LRN if a match is found for the DN and if the DN has a corresponding LRN. If a match is not found, the signaling processor can be configured to query an LNP service control point (SCP). Alternately, the LNP cache can be configured to include DNs that have a corresponding DN entry or a blank entry, but not an LRN entry, to signify that the DN is not ported.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: May 6, 2003
    Assignee: Sprint Communications Company, L.P.
    Inventors: Jason Patrick Torrey, Gregory Dean Johnson
  • Patent number: 6560241
    Abstract: The invention is a system for interfacing an ISDN or non-ISDN system with a broadband system. The broadband system can be an ATM system. The invention can process the ISDN signaling to select ATM connections and then interwork the ISDN connections with the selected ATM connections. The invention can interwork ISDN signaling and SS7 signaling. The invention can also process SS7 signaling to select ISDN connections and then interwork ATM connections with the selected ISDN connections. The invention can also interwork ISDN systems with non-ISDN systems.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: May 6, 2003
    Assignee: Sprint Communications Company, L.P.
    Inventors: Joseph Michael Christie, Michael Joseph Gardner, Tracy Lee Nelson, William Lyle Wiley, Albert Daniel DuRee
  • Publication number: 20030081818
    Abstract: A method of solving magnetoencephalographic and electroencephalographic inverse problems provides better grouping of moments of equivalent current dipoles than conventional methods. Locations of dipoles are fixed based on information using fMRI or the like. The magnitudes and orientations of the dipole moments are adjusted to fit magnetic fields produced by the dipoles to encephalographically measured data. The method also includes grouping the dipoles in two stages, using the correlation coefficient of the magnitudes of the dipole moments as a criterion.
    Type: Application
    Filed: May 31, 2002
    Publication date: May 1, 2003
    Applicant: COMMUNICATIONS RES. LAB., IND. ADMIN. INST.
    Inventor: Norio Fujimaki
  • Publication number: 20030081637
    Abstract: A partially mirrored beam tap for use in wavelength and power monitoring, wherein the partially mirrored beam tap splits off at least two beams from an elliptical Gaussian output beam, wherein a first split-off beam is transmitted to an etalon and one or more first photo-detectors for wavelength monitoring, while a second split-off beam is transmitted to one or more second photo-detectors as a reference and for power monitoring. The partially mirrored beam tap splits off the first and second split-off beams from upper and lower tails of the output beam, wherein upper and lower portions of the partially mirrored beam tap comprise mirrored surfaces that reflect tails of the output beam and a center portion of the partially mirrored beam tap comprises a clear rectangular aperture that passes the output beam.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 1, 2003
    Applicant: Agility Communications, Inc.
    Inventor: Bradley W. Short
  • Publication number: 20030081890
    Abstract: An object is to reduce the noise of optical signals in optical processing. The optical signals and optical control signals are input into a first ring optical fiber, so that the optical signals propagates clockwise and counter-clockwise in the optical fiber, and the optical control signals propagates either clockwise or counter-clockwise in the first ring optical fiber. The optical signals propagating in the same direction with the optical control signals are affected with cross phase modulation with the optical control signals. The optical signals propagating in the different direction with the optical control signals are not affected with cross phase modulation with the optical control signals. The two kinds of the optical signals are interfered each other at the optical output means to reduce the noise of the optical signals.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 1, 2003
    Applicant: Communications Research Laboratory, Independent Administrative Institution
    Inventors: Hideyuki Sotobayashi, Wataru Chujo
  • Publication number: 20030083859
    Abstract: A system for analyzing language using supervised learning method. The system extracts portions matching with structures of problem expressions from a raw corpus that is not supplemented with analysis information, then converts the extracted portions corresponding to the problem expressions into supervised data including problems and solutions and stores in the data storage. The system extracts sets of solutions and features from the supervised data stored in the data storage, carries out machine learning processing using the sets and stores learned results as to what kind of solution is the most straightforward for which feature in the learning results database. The system then extracts sets of features from the inputted object data, extrapolates analysis information showing the most optimum for a certain feature, from the sets of features based on the learning results database.
    Type: Application
    Filed: July 8, 2002
    Publication date: May 1, 2003
    Applicant: Communications Research Laboratory, independent Administration Institution
    Inventor: Masaki Murata
  • Publication number: 20030081588
    Abstract: A method for polling a plurality of wireless modems from a base station in which the base station individually polls all of the modems and forms at least two lists such that each modem is identified on only one discrete list based upon its behavior in response to the polling. Thereafter, the modems identified on each discrete list are polled at a rate that may differ from the rate at which the modems identified on any other list are polled and the lists are updated dynamically based upon the behavior of the modems polled in response to the last polling.
    Type: Application
    Filed: April 29, 2002
    Publication date: May 1, 2003
    Applicant: WAVERIDER COMMUNICATIONS INC.
    Inventors: Walter N. Simbirski, Dusty Keashly, Joseph Robert Brasic, Daniel Cameron Taylor, Braden Stuart Marr, Lisa Anne Kingsley
  • Publication number: 20030081928
    Abstract: A manufacturing process for producing an ordered array of optical fibers is provided. The process includes providing individual optic fibers, arranging the ends of the fibers into desired groupings, and ribbonizing the resultant configuration. An apparatus to perform the process of manufacturing the ordered array of optical fibers is also provided.
    Type: Application
    Filed: October 25, 2001
    Publication date: May 1, 2003
    Applicant: Schott Communications Technologies, Inc.
    Inventor: Kevin Tabor
  • Publication number: 20030083014
    Abstract: In accordance with the present invention, a method is provided for a mobile station to select one cell site in a plurality of cell sites in cellular systems with an Interference Free Window. This method is based on measurement of the signal on the downlink. In preferred embodiments, a mobile station receives the downlink spread spectrum signals from a plurality of neighboring cells. By using a RAKE type correlator or matched filter, the signal energy and the multipath delay spread profile can be estimated at the mobile station. A new function is defined as the ratio of the multipath delay spread to the energy of the received signal. Minimizing the said function will result in a cell site that provides the best quality of service in a multipath propagation environment.
    Type: Application
    Filed: December 3, 2002
    Publication date: May 1, 2003
    Applicant: Linkair Communications, Inc.
    Inventors: Daoben Li, Haiyang Gao, Shiu Ming Joseph Ho, Yongsheng Zhang, Weidong Chen, Yuanhua Deng, Jianming Xu
  • Patent number: 6556056
    Abstract: A method of designing an electronic circuit system with multiple Field Effect Transistors (FETs) made by a variety of nonstandard industrial processes is presented. With this method, the circuit parameters of the various components of the individual functional building blocks of the circuit system are systematically adjusted to minimize the many deteriorating effects resulting from system-level interactions among these functional building blocks. In one embodiment, the method is applied to a Silicon On Insulator (SOI) CMOS IC that is a Divide-by-16 divider where the functional building blocks are four Divide-by-2 dividers. The resulting drastic improvement of output signal ripple from each divider stage is graphically presented. In another embodiment, the method is applied to another SOI CMOS IC that is a Bang Bang Phase Detector where the functional building blocks are three Master Slave D-Type Flip Flops. The resulting drastic improvement of output signal ripple is also graphically presented.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: April 29, 2003
    Assignee: Qantec Communications, Inc.
    Inventors: John C. Tung, Minghao (Mary) Zhang
  • Patent number: 6556568
    Abstract: A receiving method for absorbing cell-fluctuation with a minimum data delay in low-speed transmission in an ATM switching network. In a cell fluctuation absorption receiving method of a CLAD device equipped in an ATM switching network, the CLAD device for assembling or disassembling cells from or to a bit string having a fixed communication speed of data communication from the connected communication device includes a CLAD unit having a receiving buffer corresponding to the communication speed of each of the addresses, and before storing the first received cell data, storing dummy data in a receiving buffer, the dummy data corresponding to the fluctuation guarantee time.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: April 29, 2003
    Assignee: Hitachi Communication Technologies, Ltd.
    Inventor: Toshimitsu Sasaki
  • Patent number: 6556552
    Abstract: In CDMA mobile communication systems, there are cases in which communications are interrupted with the local base station while the mobile station is searching for channels other than the communication channel. A method is offered of preventing loss of information due to interruptions in such a case. There are a first transmission step for transmitting signals from the mobile station to the base station at a transmission rate R1 and a transmission output level P1 (when the transmission output is p in FIG. 10C), a suspension step of suspending signal transmissions from the mobile station to the base station (when no transmission output power as shown in the same drawing), and a second transmission step of transmitting signals from the mobile station to the base station at a transmission rate R2 higher than the transmission rate R1 and a transmission output level P2 higher than the transmission output level P1 (when 2p in the same drawing).
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: April 29, 2003
    Assignee: NTT Communications Networks, Inc.
    Inventors: Hisashi Nakagomi, Tadao Takami, Akihiro Higashi, Kiyohito Nagata
  • Patent number: 6556610
    Abstract: Semiconductor lasers are formed by integrating an electrically pumped semiconductor laser, a beam steering element and a vertical cavity surface emitting laser (VCSEL) together. The electrically pumped semiconductor laser is modulated to modulate a pump beam of photons at a first wavelength. The beam steering element directs the pump beam to the VCSEL to provide optical pumping. The VCSEL receives the pump beam of photons at the first wavelength and is stimulated to emit photons of a laser beam at a second wavelength longer than the first. In embodiments, index guiding is provided in the VCSEL to improve the optical pumping and emission efficiencies when the pump beam is modulated at high frequencies. Embodiments of the beam steering element include a silicon bench, a polymer element, and a facet included in the edge emitting laser and an external mirror. Embodiments of index guiding include an air gap to form a mesa and an oxide confinement ring shaped layer.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: April 29, 2003
    Assignee: E20 Communications, Inc.
    Inventors: Wenbin Jiang, Chan-Long Shieh, Xiqing Sun, Jeff Tsao, Hsing-Chung Lee
  • Patent number: 6556539
    Abstract: A system and method for reducing undesirable phase transients caused by revertive switchover in a telecommunications network. Selector switch settings are assigned priorities. The priorities indicate an order of preference in which to assign selector switch source inputs or outputs. Selector switch sources connected to equipments that are to be used as backups of one another are assigned the same priority level. Assignment of the same priority level prevents undesirable phase transients by controlling revertive switchovers. In addition, network topology is controllable using the priority table. The controllable characteristic of the network topology provides flexibility to a network designer to provide diversity among network paths such that the network is made more robust.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: April 29, 2003
    Assignee: MCI Communications Corporation
    Inventor: Gregory Scott Henderson
  • Patent number: 6554698
    Abstract: A valve for a vent. The valve includes an inner leaf having a closed state which covers the vent and blocks gas flow through the vent in a first direction, and an open state which opens the vent and allows gas flow through the vent in a second direction. The valve includes an outer leaf opposing the inner leaf. A method for controlling gas flow through a vent. The method includes the steps of moving an inner leaf and an outer leaf opposing the inner leaf on the vent from a closed state which covers the vent and blocks gas flow through the vent in a first direction to an open state which opens the vent and allows gas flow through the vent in a second direction with gas flow moving in the second direction through the vent. Then there is the step of stopping the gas flow in the second direction allowing the inner leaf and the outer leaf to each move to the closed state.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: April 29, 2003
    Assignee: Marconi Communications, Inc.
    Inventors: Sorin Kranzdorf, Lan Tang