Patents by Inventor James D. Mills

James D. Mills has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9660753
    Abstract: An optical add/drop multiplexer incorporates an integrated receiver module and an integrated transmitter which are interfaced to an intervening electrical network to provide an add/drop/pass-through functionality. The receiver module incorporates a wavelength demultiplexer which is in turn combined with optical/electrical converters PIN photodiodes, and amplifiers on a per wavelength basis to output a plurality of parallel electrical signals in response to a common optical input. The transmitter module combines an integrated plurality of drive circuits and lasers for converting a plurality of parallel input electrical signals to a plurality of optical signals, on a per wavelength basis, which in turn are coupled via an optical wavelength multiplexer to a common output optical fiber. The interconnected electrical network, ring mesh or tree, can provide a reconfigurable electrical add/drop interface to other portions of the network.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: May 23, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Philip J. Lin, James D. Mills
  • Publication number: 20120063778
    Abstract: An optical add/drop multiplexer incorporates an integrated receiver module and an integrated transmitter which are interfaced to an intervening electrical network to provide an add/drop/pass-through functionality. The receiver module incorporates a wavelength demultiplexer which is in turn combined with optical/electrical converters PIN photodiodes, and amplifiers on a per wavelength basis to output a plurality of parallel electrical signals in response to a common optical input. The transmitter module combines an integrated plurality of drive circuits and lasers for converting a plurality of parallel input electrical signals to a plurality of optical signals, on a per wavelength basis, which in turn are coupled via an optical wavelength multiplexer to a common output optical fiber. The interconnected electrical network, ring mesh or tree, can provide a reconfigurable electrical add/drop interface to other portions of the network.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: Tellabs Operations, Inc.
    Inventors: Philip J. Lin, James D. Mills
  • Patent number: 8095007
    Abstract: An optical add/drop multiplexer incorporates an integrated receiver module and an integrated transmitter which are interfaced to an intervening electrical network to provide an add/drop/pass-through functionality. The receiver module incorporates a wavelength demultiplexer which is in turn combined with optical/electrical converters PIN photodiodes, and amplifiers on a per wavelength basis to output a plurality of parallel electrical signals in response to a common optical input. The transmitter module combines an integrated plurality of drive circuits and lasers for converting a plurality of parallel input electrical signals to a plurality of optical signals, on a per wavelength basis, which in turn are coupled via an optical wavelength multiplexer to a common output optical fiber. The interconnected electrical network, ring mesh or tree, can provide a reconfigurable electrical add/drop interface to other portions of the network.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: January 10, 2012
    Assignee: Tellabs Operations, Inc.
    Inventors: Philip J. Lin, James D. Mills
  • Patent number: 7668184
    Abstract: A method and system for designing a bi-connected ring-based network is provided, which designs from scratch or converts an existing network to a dual-homed ring-based network. The network covers the locations capable of being bi-connected with one or more cycles/rings. The traffic demand is then routed via the cycles, in such a way so as to minimize the amount of network traffic management equipment required.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: February 23, 2010
    Assignee: Tellabs Operations, Inc.
    Inventors: Timothy Y. Chow, Philip J. Lin, James D. Mills
  • Patent number: 7289428
    Abstract: A communication system (5) comprises a first network (10) including a source (11) arranged to transmit data and a second network (30) including a destination (31) arranged to receive the data. Interruptions in communication between the source and destination are reduced by providing a first primary node (12) and a first secondary node (13) in the first network (10), and a second primary node (32) and a second secondary node (33) in the second network (30). First and second sets of primary routes (14 and 34) and secondary routes (18 and 36) are provided within the first and second networks to facilitate delivery of data to various nodes.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: October 30, 2007
    Assignee: Tellabs Operations, Inc.
    Inventors: Timothy Y. Chow, Philip J. Lin, James D. Mills
  • Patent number: 7133410
    Abstract: A method and system for designing a bi-connected ring-based network is provided, which designs from scratch or converts an existing network to a dual-homed ring-based network. The network covers the locations capable of being bi-connected with one or more cycles/rings. The traffic demand is then routed via the cycles, in such a way so as to minimize the amount of network traffic management equipment required.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: November 7, 2006
    Assignee: Tellabs Operations, Inc.
    Inventors: Timothy Y. Chow, Philip J. Lin, James D. Mills
  • Patent number: 6850662
    Abstract: A reduced component optical switch module includes a plurality of ports wherein each port includes an optical input and an optical output. A plurality of switchable deflectors in combination with a plurality of non-switchable deflectors can be used to establish transmission paths between pairs of ports to support traffic reciprocity. In one embodiment, the ports and switchable elements are configured so as to provide substantially constantly transmission paths within the respective module. In another embodiment, additional deflector elements can be provided to implement loop-back functionality at one or more of the ports.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 1, 2005
    Assignee: Tellabs Operations, Inc.
    Inventors: James D. Mills, Philip J. Lin, Roger P. Holmstrom
  • Patent number: 6650804
    Abstract: A reduced component optical switch module includes a plurality of ports wherein each port includes an optical input and an optical output. A plurality of switchable deflectors in combination with a plurality of non-switchable deflectors can be used to establish transmission paths between pairs of ports to support traffic reciprocity. In one embodiment, the ports and switchable elements are configured so as to provide substantially constantly transmission paths within the respective module. In another embodiment, additional deflector elements can be provided to implement loop-back functionality at one or more of the ports.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: November 18, 2003
    Assignee: Tellabs Operations, Inc.
    Inventors: James D. Mills, Philip J. Lin, Roger P. Holmstrom
  • Publication number: 20030065811
    Abstract: A method for protecting a mesh network from connection failures includes reviewing, for each link in the mesh network, the single failure scenarios which would require support from the particular link. The method includes determining from these single failure scenarios the worst-case bandwidth required of the particular link to support them and designating this worst-case bandwidth as the capacity for the particular link.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 3, 2003
    Inventors: Philip J. Lin, Timothy Y. Chow, James D. Mills
  • Publication number: 20030031124
    Abstract: A communication system (5) comprises a first network (10) including a source (11) arranged to transmit data and a second network (30) including a destination (31) arranged to receive the data. [At least one of the first network and the second network is a mesh network.] Interruptions in communication between the source and destination are reduced by providing a first primary node (12) and a first secondary node (13) in the first network (10), and a second primary node (32) and a second secondary node (33) in the second network (30). [A first set] First and second sets of primary routes (14 and 34) and secondary routes (18 and 36) [is] are provided within the first and second networks [network] to facilitate delivery of [a first set of the] data to various nodes. [the first primary node and a second set of the data to the first secondary node.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 13, 2003
    Inventors: Timothy Y. Chow, Philip J. Lin, James D. Mills
  • Publication number: 20020194339
    Abstract: The present invention relates, by way of illustration, to a telecommunications network that includes a collection of geographically dispersed network elements, called nodes, connected by communication links (e.g., fiber, wireless links). The topology of the network may be an arbitrary mesh. This information may be represented by a graph. For each pair of nodes in the network, a pair of node-disjoint paths between the nodes of minimum total length is computed. One path of each pair is designated to be the working path and the other is designated to be a protection path. Each time there is a traffic demand to be routed on the network from one node A to another node B, the required amount of bandwidth to support the demand is allocated on the working path between A and B. Bandwidth is also allocated along the protection path.
    Type: Application
    Filed: May 15, 2002
    Publication date: December 19, 2002
    Inventors: Philip J. Lin, Timothy Y. Chow, James D. Mills
  • Publication number: 20020171890
    Abstract: An optical add/drop multiplexer incorporates an integrated receiver module and an integrated transmitter which are interfaced to an intervening electrical network to provide an add/drop/pass-through functionality. The receiver module incorporates a wavelength demultiplexer which is in turn combined with optical/electrical converters PIN photodiodes, and amplifiers on a per wavelength basis to output a plurality of parallel electrical signals in response to a common optical input. The transmitter module combines an integrated plurality of drive circuits and lasers for converting a plurality of parallel input electrical signals to a plurality of optical signals, on a per wavelength basis, which in turn are coupled via an optical wavelength multiplexer to a common output optical fiber. The interconnected electrical network, ring mesh or tree, can provide a reconfigurable electrical add/drop interface to other portions of the network.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 21, 2002
    Inventors: Philip J. Lin, James D. Mills
  • Publication number: 20020118687
    Abstract: A method and system for designing a bi-connected ring-based network is provided, which designs from scratch or converts an existing network to a dual-homed ring-based network. The network covers the locations capable of being bi-connected with one or more cycles/rings. The traffic demand is then routed via the cycles, in such a way so as to minimize the amount of network traffic management equipment required.
    Type: Application
    Filed: April 5, 2001
    Publication date: August 29, 2002
    Inventors: Timothy Y. Chow, Philip J. Lin, James D. Mills
  • Patent number: 6434589
    Abstract: A computer-based method of scheduling jobs for processing by resources. The method proceeds by identifying resources capable of processing a first job and selecting a second job for rescheduling from jobs currently being processed by the identified resources such that the second job can be processed by resources other than the identified resources. Scheduling further includes scheduling the first job for processing by the resource currently processing the second job and rescheduling the second job. The method used to schedule the first job may be repeated to reschedule the second job and any jobs displaced by rescheduling the second job.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: August 13, 2002
    Assignee: Tellabs Operations, Inc.
    Inventors: Philip J. Lin, James D. Mills
  • Publication number: 20020057864
    Abstract: A reduced component optical switch module includes a plurality of ports wherein each port includes an optical input and an optical output. A plurality of switchable deflectors in combination with a plurality of non-switchable deflectors can be used to establish transmission paths between pairs of ports to support traffic reciprocity. In one embodiment, the ports and switchable elements are configured so as to provide substantially constantly transmission paths within the respective module. In another embodiment, additional deflector elements can be provided to implement loop-back functionality at one or more of the ports.
    Type: Application
    Filed: January 3, 2002
    Publication date: May 16, 2002
    Inventors: James D. Mills, Philip J. Lin, Roger P. Holmstrom
  • Patent number: 6363182
    Abstract: A reduced component optical switch module includes a plurality of ports wherein each port includes an optical input and an optical output. A plurality of switchable deflectors in combination with a plurality of non-switchable deflectors can be used to establish transmission paths between pairs of ports to support traffic reciprocity. In one embodiment, the ports and switchable elements are configured so as to provide substantially constantly transmission paths within the respective module. In another embodiment, additional deflector elements can be provided to implement loop-back functionality at one or more of the ports.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: March 26, 2002
    Inventors: James D. Mills, Philip J. Lin, Roger P. Holmstrom
  • Publication number: 20020018614
    Abstract: A reduced component optical switch module includes a plurality of ports wherein each port includes an optical input and an optical output. A plurality of switchable deflectors in combination with a plurality of non-switchable deflectors can be used to establish transmission paths between pairs of ports to support traffic reciprocity. In one embodiment, the ports and switchable elements are configured so as to provide substantially constantly transmission paths within the respective module. In another embodiment, additional deflector elements can be provided to implement loop-back functionality at one or more of the ports.
    Type: Application
    Filed: March 6, 2001
    Publication date: February 14, 2002
    Inventors: James D. Mills, Philip J. Lin, Roger P. Holmstrom
  • Patent number: 6035557
    Abstract: Footwear (210) that is readily adjustable to maintain the wearer in an upright, substantially vertical position, enabling the wearer to negotiate a steep roof without slipping or falling. The footwear (210) entails a pair of shoe boards (224) that attach to the wearer's shoes or feet. Each shoe board (224) is supported on a base (212) whose shape provides a large surface area that, when in contact with the roof under the weight of the wearer, securely grips the roof surface, even for roof pitches of 12/12. In addition, the shape of each base (212) is tailored to enable a pair of the footwear (210) to nest together, allowing the wearer to place his or her feet close together when desired. In a preferred embodiment, each base (212) is equipped with concave surface regions (228B, 232B) that receive convex portions (228A, 232A) of its mating shoe board (224) in a manner that provides an uncomplicated method of adjusting the pitch of the footwear (210) and securing the shoe board (224) to the base (212).
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: March 14, 2000
    Inventor: James D. Mills