Patents Assigned to Lucent Technologies
  • Patent number: 6389398
    Abstract: An IVR system for an information network and method for storing and executing user queries stored on the network so that such queries do not have to be re-entered each time a user wants to access information from or execute a transaction on the network. The system can also be programmed to automatically execute the query at a predetermined time or times, and deliver information retrieved from the network and/or confirmation of the execution of a transaction on the network to the user in a format specified by the user.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: May 14, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Paul C. Lustgarten, Thomas Clavin Cannon, Jr.
  • Publication number: 20020055212
    Abstract: A halo implant (42, 44) for an MOS transistor (10) is formed in a semiconductor substrate (12) at a shallow implant angle, relative to normal to the substrate surface (29). A polysilicon gate structure (32, 33) is formed over a gate oxide (28) and then a hard mask (70), such as a TEOS-generated layer of silicon oxide, is deposited on an upper surface (68) of the gate. The mask is etched with a blanket anisotropic etch to form a cap-shaped mask (72). The shape of the cap causes the dopant for the halo implant to penetrate to a depth which follows the contour of the cap. Thus, halo implants may be formed which extend under the gate structure without the need for large angle implants and resultant shadowing problems caused by adjacent devices.
    Type: Application
    Filed: December 31, 2001
    Publication date: May 9, 2002
    Applicant: Lucent Technologies
    Inventors: Seungmoo Choi, Donald Thomas Cwynar, Scott Francis Shive, Timothy Edward Doyle, Felix Llevada
  • Patent number: 6385302
    Abstract: A telecommunication system configured for use with a network for handling special number calls is described. The network includes a plurality of switching junctions connected by a plurality of channels, a plurality of service providing stations connected into the network at at least one of the switching junctions and the plurality of channels for effecting various telecommunication milieux. Selected of the service providing stations serve customer-operated communication devices using selected of the telecommunication milieux. The system comprises: (a) an action station configured for selective connection with action agencies; (b) an answering station connected with an action station; (c) a call processing center connected with an answering station and configured for connection with the network; and (d) an on-demand answering station connected in a virtual private network with a call processing center and with an action station.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: James T. Antonucci, Brian Glen Barnier, David Weksel
  • Patent number: 6385368
    Abstract: Embodiments of the invention include an optical system apparatus and method for modulating the strength of a grating such as a long period grating (LPG) within optical systems and devices by varying the light transmission and loss characteristics of the cladding mode, rather than varying the effective refractive index of the fiber layers. According to embodiments of the invention, the use of a light-scattering or light absorptive material in the cladding of the optical fiber or other optical energy transmission medium causes the cladding to switch between a first state that effectively allows coherent coupling of cladding modes and a second state that effectively prevents coherent coupling of cladding modes.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies, Inc.
    Inventors: Karl R. Amundson, Todd Christian Haber, Jefferson Lynn Wagener, Robert Scott Windeler
  • Patent number: 6383665
    Abstract: The invention relates to poly(phenylene vinylene) polymers substituted with dendritic sidechains to enhance main-chain separation in the solid state. The polymers are synthesized by the Heck polymerization and have a weight-average molecular weight of 20,000 to 60,000 Daltons. The polymers are self-ordering in the solid state and have thermotropic liquid crystalline phases. The polymers show enhanced photoconductivity, better charge transport capability and improved polarized light emission.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Zhenan Bao, Karl R. Amundson, Xiaochen Linda Chen
  • Patent number: 6385609
    Abstract: A system and methods are provided for collecting, analyzing, and reporting data supplied on the report data stream of an electronic switching system or other generator of a report or log data stream or file. Local data storage facilities are provided to receive and store report data stream information for one or more switches. A centralized data storage and analysis facility receives the data collected by the local facilities. A parser parses the collected report data to select and reformat report items of interest according to predefined selection triggers. A post processing facility includes pattern identification and pattern classification components. The pattern identification component reads the parsed, selected report items and extracts a pattern comprising the selection triggers and function call addresses associated with each event. The pattern classification component determines whether the identified pattern for each event is old or newly encountered.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Alvin Barshefsky, Shao-Kuang Hu, Scott Douglas Olmstead, Kirk K. Pegues, William Calvin Sand, Rickey Joseph Spiece, Shun-Chi Wu, Chi Ying Yu
  • Patent number: 6385169
    Abstract: A method is provided for allocating bandwidth to a subscriber in a service provider domain that is part of a packet switched network such as the Internet, for example. In accordance with the method, a number of shares of bandwidth are assigned to the subscriber based on an agreement between the subscriber and a service provider. A subscriber identifier and the number of shares assigned thereto are distributed to the routers in the domain of the service provider. The routers will in turn allocate bandwidth to packets they receive based on the number of shares assigned to the subscriber transmitting or receiving the packet. The subscriber may include one or more different user terminals that aggregate traffic onto a single datastream. The shares assigned to the user may denote absolute amount of bandwidth, or alternatively, may denote a relative bandwidth allocation.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventor: Zheng Wang
  • Patent number: 6384695
    Abstract: A high power combiner arrangement with improved isolation between input ports for high power applications. In particular, in accordance with high power combiner arrangement, power combining logic is combined with a series of isolators such that at least one isolator is inserted between each power source, i.e., a signal source, and a corresponding input port to the power combining logic. The number of isolators inserted is determined as a function of the isolation requirements of the overall application. Advantageously, the degree of isolation achieved by the high power combiner is directly proportional to the number of inserted isolators placed between each power source. Furthermore, the insertion of a number of high power circulators between each power source and the power combing logic facilitates the achievement of higher isolation between the power sources with minimal degradation in signal characteristics.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Elias Bonaventure Kpodzo, Greg Alan Nease
  • Patent number: 6385574
    Abstract: A method and system of vocoding comprising filtering an input signal resulting in an excitation signal having at least one signal pulse translating the location of the signal pulse into one of a plurality of valid track locations in a plurality of signal pulse location references. Data is placed into an invalid track location in the signal pulse location references. The excitation signal having the signal pulse location references is transmitted for receipt by a receiving vocoder.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies, Inc.
    Inventor: Steven A. Benno
  • Patent number: 6385185
    Abstract: Coherent channels estimates are generated for received uplink mobile-to-base signals in a wireless CDMA system, or for other types of orthogonally-modulated signals in other multiaccess systems. The coherent channel estimates are used to implement signal detection functions such as maximal ratio combining (MRC), coherent detection and interference cancellation. In one embodiment, a matched filter bank provides a set of matched filter outputs for different combinations of data symbols, multipath components of a received signal, and base station receive antennas. The matched filter outputs are processed in a coherent channel estimator to generate a set of coherent channel estimates. The channel estimates may be generated directly from the matched filter outputs, or may be generated by processing the matched filter outputs using a decorrelating detector approach. The invention also provides improved interference cancellation techniques which can be implemented using any type of coherent channel estimates.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventor: Howard C. Huang
  • Patent number: 6385381
    Abstract: A fiber optic interconnection combination closure is provided for fashioning optical fiber connections in an enclosed chamber protected from environmental conditions and fiber stress. Fiber splices are fashioned in splice organizers within a closure base assembly. Fiber terminations are fashioned at termination adapters arrayed in a closure chassis. Bend limits for optical fiber are maintained as the fiber is directed on paths in the closure to/from splice organizers, termination adapters, and closure exit portals. Fiber is organized, strain relieved and collected by fiber clips, rings, retainers, and looms positioned such that directed fiber is maintain at a minimum bend radius on such fiber paths. Provided slack storage facilities allow fiber connections to be handled individually without disturbing other connections and/or fibers. Fibers are retained, organized and guided in a path on the closure exterior by attached wire brackets.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Neal Anthony Janus, Anthony Pellegrino, Randy Alan Reagan
  • Patent number: 6385383
    Abstract: An optical attenuator and method, the optical attenuator having a core which is covered by a cladding material with a section of polymer cladding of an identifiable length. The polymer cladding has an index of refraction that varies with temperature. A thermal device such as a thermoelectric heater or cooler is placed adjacent to the polymer cladding to control the temperature of the cladding. The index of refraction of the polymer cladding is manipulated by changing its temperature by supplying power to the thermal device. The index of refraction of the polymer cladding will range from values below and above the index of refraction of the core material. A light wave transmitted through the core will experience a degree of attenuation due to leakage into the polymer cladding material when the index of refraction of the polymer cladding is equal to or greater than the index of refraction of the core. The light wave may be either attenuated or blocked entirely.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Dietrich Marcuse, Herman M. Presby
  • Patent number: 6385668
    Abstract: Hardware reconfiguration is accomplished through the use of low-level, self-terminating software processes that allows a high degree of parallelism in the reconfiguration operation, even in systems utilizing a mixture of recently developed hardware and software in combination with legacy components. In a system including a centralized processor resource and a plurality of interconnected hardware elements, a method is provided for performing hardware reconfiguration, the method comprising the steps of receiving a request for reconfiguration of one or more predetermined hardware elements, and, in response thereto, initiating at least one master terminal process to determine family relationships among the predetermined hardware elements and other hardware elements to which the predetermined hardware elements are connected. Based upon these family relationships, terminal slave processes are initiated to accomplish hardware element reconfiguration.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Terry Gene Gaddess, Mark Wellbrock
  • Patent number: 6384963
    Abstract: A fiber Raman amplifier is configured to use a co-propagating Raman pump source, which may be beneficial in a variety of system configurations (for example, in bidirectional communication systems). By carefully configuring the pump source characteristics, sufficient optical gain can be achieved in the co-propagating arrangement, the characteristics including: (1) using an optical pump power of at least 50 mW, (2) having a relatively large spectral bandwidth within the pump (to suppress SBS); and (3) a frequency difference between all longitudinal pump modes of each pump laser being separated by at least the walk-off frequency between the pump laser frequency and the signal frequency, and all intense longitudinal modes between different pump lasers being separated by at least the electrical bandwidth of the communication system.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: David Ackerman, Kenneth L. Bacher, William Dautremont-Smith, Mei Du, Karsten Rottwitt, Andrew John Stentz, Thomas A. Strasser, Liming Zhang
  • Patent number: 6384956
    Abstract: A reset-free polarization controller is presented for maintaining the polarization of an incident optical signal at a fixed and known value. At least 3 controllable quarter-wavelength plates are connected in cascade to an incident optical source having a variable polarization. Each quarter-wavelength plates varies the orientation of phase retardation along the optical wavepath. The dynamic realignment of the cascaded quarter-wavelength plates with respect to the varying input polarization maintains the polarization of the output optical signal at a fixed and known value.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventor: William Shieh
  • Patent number: 6385252
    Abstract: A high speed digital signal connection interface with reduced cross talk includes a multiple pin connector with disconnectable header and receptacle portions. The header is attached to a first set of signal carrying wire pairs communicating with a first signal processing unit. The receptacle is attached to a second set of signal carrying wire pairs communicating with a second signal processing unit. Within each of the first and second wire pair sets is a first wire pair subset carrying digital signals travelling in a first direction between the signal processing units, and a second wire pair subset carrying digital signals travelling in a second direction between the signal processing units. The first and second wire pair sets are attached to the corrector such that adjacent pin pairs of the connector carry only signals travelling in the same direction and such that connector pin pairs carrying signals travelling in opposite directions are not adjacent to each other.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: David A. Gradl, Michael L. Steinberger
  • Patent number: 6385356
    Abstract: In an optical fiber transmission system, higher order PMD compensation is realized with a sweeper device at the input to the fiber which converts the polarization of the light beam into a frequency dependent polarization whose rate of change is similar to the rate of change of one of the PSPs of the fiber. The frequency dependent polarization of the light beam is then aligned with one of the frequency-dependent PSPs at the input of the fiber. Furthermore, differential group delay dispersion for a given frequency can be reduced by employing a chromatic dispersion compensator prior to the receiver end of the fiber transmission system. Control of the polarization of the light beam can be facilitated by monitoring PMD in the system, or alternatively, monitoring an effect of PMD in the system, such as bit error rates.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Robert M. Jopson, Herwig Kogelnik, Lynn E. Nelson
  • Patent number: 6382807
    Abstract: A reflective element, such as a mirror, includes a substrate and a reflective layer formed thereon. The substrate comprises at least one thixotropic metal alloy, which is injected into a mold to form the shape desired for the reflective element. The reflective element may also include an interface layer comprising a thermoset material, such as an epoxy resin, formed between the substrate and the reflective layer to increase the smoothness of the substrate.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Edwin Arthur Chandross, John David Weld
  • Patent number: 6385259
    Abstract: A chip synchronization composite code match filter and a frame synchronization composite code match filter are disclosed and respectively serve as the first and second stages of a mobile terminal which also has a third stage for providing a scrambling code identification function. These three stages complete the acquisition function for the mobile terminal. The mobile terminal is particularly suited for operational interaction in the Third Generation Partnership Project (3GPP) Standard. Both the chip synchronization and frame synchronization composite code match filters utilize the hierarchial structure of the Golay code in a manner so as to reduce the components needed to accomplish the chip and frame synchronization functions for the mobile terminal operating within the 3GPP standards.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies, Inc.
    Inventors: Po-An Sung, Jin-Ghee Goh
  • Patent number: 6385176
    Abstract: A controller and a method for controlling the amount of loss in signal paths of a communication system are disclosed. The method includes sampling the impulse response of an echo cancelling circuit, detecting an abnormal signal condition by comparing the impulse response to a reference, and inserting loss into a first signal path when an abnormal signal condition is detected. One controller configuration for adjusting the amount of loss in the signal paths of a communication system has an adjustable attenuator in the signal path having a control signal input, a memory element which stores a reference, and a comparator having one input connected to the memory of the echo canceler circuit which samples the impulse response, another input connected to the memory which stores the reference, and an output connected to the control signal input of the attenuator.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: May 7, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Vasu Iyengar, James Charles Popa