Patents Examined by Oommen Jacob
  • Patent number: 10516477
    Abstract: A submarine optical repeater includes a submarine amplifier module, which further includes a pumping laser module and an optical detector module. The pumping laser module generates optical amplifications within an optical cable, and, in the case of a fault in the optical cable, the optical detector module detects at least one characteristic of an optical signal caused by the fault in the optical cable. This configuration then identifies a particular signal characteristic that indicates a fault within the optical cable.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: December 24, 2019
    Assignee: Neptune Subsea IP Limited
    Inventors: Stephen Michael Webb, Wayne S Pelouch, Do-Il Chang, John G. Ellison
  • Patent number: 10498451
    Abstract: One example of a removable module includes an optical transceiver, optical cables, electrical cables, a power conditioner, and a housing. The optical transceiver converts optical signals received through an optical cable to electrical signals to distribute to a plurality of computing devices through electrical cables and converts electrical signals received from the plurality of computing devices through the electrical cables to optical signals to transmit through the optical cable. The power conditioner receives power from a system with the removable module installed in the system to provide power to the optical transceiver. The housing encloses the optical transceiver and the power conditioner and includes an air intake port and an air exhaust vent. The housing is received by a bay of the system, which provides an interface to the power conditioner and provides air to the air intake port with the removable module installed in the system.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: December 3, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Kevin B Leigh, John Norton
  • Patent number: 10491295
    Abstract: One or more operational parameters associated with pluggable optical transceivers are estimated to mitigate impairments to an optical signal caused by imperfections in the optical transceivers. A monitoring algorithm within a receiver signal processor may further use the estimated operational parameters associated with the pluggable optical transceivers to determine whether the transceivers are performing correctly. If the monitoring algorithm determines that either the transmitting or receiving optical transceiver is not functioning correctly, it may generate an alarm signal to notify a system administrator about the damaged device.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 26, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Christopher R. Fludger, Soeren Gehrke, Johann B. Schiessl
  • Patent number: 10478153
    Abstract: An intravenous ultrasound (IVUS) system can include a catheter and a translation mechanism for translating the catheter. Engagement between the catheter and the translation mechanism may be detected, and the translation mechanism can be placed in a connected or disconnected mode, accordingly. When in connected mode, certain IVUS operations may be enabled when compared to disconnected mode, wherein such operations may be disabled. Thus, some embodiments may ensure proper engagement between the catheter and the translation mechanism prior to allowing certain IVUS operations to be carried out.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: November 19, 2019
    Assignee: ACIST MEDICAL SYSTEMS, INC.
    Inventor: Arcadi Elbert
  • Patent number: 10484089
    Abstract: A device, including a switch configured to couple a current source with an output terminal upon receipt of a data signal, is provided. The device also includes a first variable capacitor coupled in parallel to the current source at a common node on a source terminal of the switch, wherein the first variable capacitor comprises multiple capacitive elements coupled in parallel and configured to be activated by a programmable signal, and wherein the programmable signal is selected to increase a charge transfer rate from an output terminal coupled to a load, when the switch is turned on. A system and a serial interface including the above device are also provided.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 19, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Zhubiao Zhu, Clinton Harold Parker, Daniel Alan Berkram
  • Patent number: 10476597
    Abstract: A transformer monitoring device for a smart grid network is provided, which is configured to transmit and receive optical signaling between other transformer monitoring devices and other devices in the smart grid network. The transformer monitoring device includes a receiver configured to receive optical signaling, a signal processor and a transmitter configured to transmit optical signaling. The signal processor is configured to receive optical signaling from the receiver, which contains information about collected data, including data related to electrical signaling being processed by a transformer located and arranged in a grid network or metered data related to associated signaling being provided from the transformer to a building or structure in the grid network and determine corresponding optical signaling containing information about the collected data for transmitting back to a central location or other connected device for further processing, based upon the signaling received.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 12, 2019
    Assignee: Delta Energy & Communications, Inc.
    Inventors: Scott Foster, Keith Teichmann
  • Patent number: 10461878
    Abstract: Described herein is a wavelength selective switch (WSS) type optical switching device (1) configured for switching input optical beams from input optical fiber ports (3, 5 and 7) to an output optical fiber port (9). Device (1) includes a wavelength dispersive grism element (13) for spatially dispersing the individual wavelength channels from an input optical beam in the direction of a second axis (y-axis). The optical beams propagate from input ports (3, 5 and 7) in a forward direction and are reflected from a liquid crystal on silicon (LCOS) device (11) in a return direction to output port (9). The input optical beams are transmitted through a port selecting module (21), which provides polarization diversity to device (1) and provides capability to restrict optical beams returning from LCOS device (11) from being coupled back into input ports (3, 5 and 7).
    Type: Grant
    Filed: April 8, 2017
    Date of Patent: October 29, 2019
    Assignee: Finisar Corporation
    Inventor: Steven James Frisken
  • Patent number: 10461851
    Abstract: The amount of current provided to a laser diode of an optical network transceiver device is monitored, the amount of current reaching a threshold limit is detected, and the power output of the optical network transceiver device is monitored. Based at least in part on the detection that the amount of current has reached the threshold limit and the monitored power output of the optical network transceiver device, a likelihood of failure of the optical network transceiver device is predicted.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 29, 2019
    Assignee: Facebook, Inc.
    Inventors: WenSheng Zeng, Abhijit Chakravarty, Hans-Juergen Schmidtke, Edward Galley
  • Patent number: 10436992
    Abstract: An interconnect system includes a first circuit board, first and second connectors connected to the first circuit board, and a transceiver including an optical engine and arranged to receive and transmit electrical and optical signals through a cable, to convert optical signals received from the cable into electrical signals, and to convert electrical signals received from the first connector into optical signals to be transmitted through the cable. The transceiver is arranged to mate with the first and second connectors so that at least some converted electrical signals are transmitted to the first connector and so that at least some electrical signals received from the cable are transmitted to the second connector.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: October 8, 2019
    Assignee: SAMTEC, INC.
    Inventors: Eric J. Zbinden, Randall E. Musser, Jean-Marc A. Verdiell, John A. Mongold, Brian R. Vicich, Keith R. Guetig
  • Patent number: 10438993
    Abstract: A light emitting element array includes plural light emitting elements connected in parallel to each other by a wiring connected to a terminal that supplies a current. Each of the light emitting elements is disposed at a position of a predetermined path length along a path of the current flowing from the terminal through the wiring. The plural light emitting elements include, in a mixed form, one or more first light emitting elements each having a non-shielded light emission aperture and one or more second light emitting elements each having a shielded light emission aperture. At least one of the first light emitting elements is disposed at a position of the longest path length. At least one of the second light emitting elements is disposed at a position of the shortest path length.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: October 8, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Junichiro Hayakawa, Akemi Murakami, Hideo Nakayama, Tsutomu Otsuka
  • Patent number: 10440454
    Abstract: Embodiments of the present invention provide a signal processing method, a network apparatus, and a system. The method includes: mapping a received first client signal into a first ODUflex; mapping the first ODUflex into an optical channel data tributary unit (ODTUCn.X) including X tributary slots, where X is a non-integer; and multiplexing the ODTUCn.X into an optical channel payload unit (OPUCn). According to the signal processing method provided in the embodiments of the present invention, carrying efficiency can be improved when a fine-grained service is transmitted, and complexity is relatively low.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: October 8, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wei Su, Maarten P. J. Vissers, Qiuyou Wu
  • Patent number: 10432342
    Abstract: A multi-layer network planning system can determine a set of regenerator sites (“RSs”) that have been found to cover all paths among a set of nodes of an optical layer of a multi-layer network and can determine a set of candidate RSs in the optical layer for use by the links between a set of nodes of an upper layer, wherein each RS can be selected as a candidate RS for the links. The system can determine a binary path matrix for the links between the set of nodes of the upper layer. The system can determine a min-cost matrix that includes a plurality of min-cost paths. The system can determine a best RS from the set of candidate RSs and can move the best RS from the set of candidate RSs into the set of RSs for the links. The system can then update the binary path matrix.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 1, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Balagangadhar Bathula, Angela Chiu, Rakesh Sinha, Sheryl Leigh Woodward
  • Patent number: 10432306
    Abstract: An optical time-domain reflectometer, OTDR, apparatus is configured to measure a backscattered trace of a fiber link under test (FLUT). The OTDR apparatus includes at least one photo diode adapted to detect an optical signal reflected from points along the fiber link under test in response to an optical test signal generated by a laser of the OTDR apparatus and supplied to the fiber link under test. The reflected optical test signal is attenuated or amplified automatically such that the power of the optical signal received by the photodiode is limited to a predetermined power range.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: October 1, 2019
    Assignee: ADVA OPTICAL NETWORKS SE
    Inventor: Michael Eiselt
  • Patent number: 10425156
    Abstract: The amount of current provided to a laser diode of an optical network transceiver device, the power output of the optical network transceiver device, and the device temperature of the optical network transceiver device is monitored. Based at least in part on a detected fluctuation in at least one of the amount of current provided to the laser diode, the power output of the optical network transceiver device, and the device temperature of the optical network transceiver device, a determined expected life of the optical network transceiver device is dynamically adjusted.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: September 24, 2019
    Assignee: Facebook, Inc.
    Inventors: WenSheng Zeng, Abhijit Chakravarty, Matthew Peter Kelly, Edward Galley
  • Patent number: 10411799
    Abstract: Optical wireless communication systems configured to provide Hadamard coded information are described. In some examples, the system includes a light fixture configured to encode communication information received from an area network as Hadamard coded information, and provide the Hadamard coded information as a first Hadamard coded modulated optical emission from a light emitting diode. An optical wireless communication device can receive and decode the optical emission and provide the decoded information to an electronic device coupled to the optical wireless communication device.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 10, 2019
    Assignee: VLNCOMM, Inc.
    Inventors: Mohammad Noshad, Maite Brandt-Pearce
  • Patent number: 10411798
    Abstract: Methods, systems, and devices are described for processing Visual Light Communication (VLC) signals by identifying a subset of pixel elements likely to receive at least a portion of of detectable light transmitted from one or more VLC light sources, based on a first frame of pixel sample values. One method may include generating a second frame of pixel sample values of VLC signal intensities and limiting processing to the identified subset of the pixel elements.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: September 10, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Suresh Kumar Bitra, Aravind Korlepara
  • Patent number: 10404399
    Abstract: The differences in the power received from multiple optical network units connected to an optical hub may exceed an allowable dynamic range. The dynamic range may be reduced by determining the power received at the optical hub from each optical network unit and adjusting the power transmitted from one or more optical network units to reduce the overall dynamic range. For each optical network unit, the hub may determine the received optical power in an upstream signal from the optical network unit and receive a digital representation of the transmitted power. The hub may determine to adjust the optical power sent from one or more of the optical network units to reduce the dynamic range. The adjustments to the optical powers at the optical network units may be performed by sending commands from the optical hub to each adjusted optical network unit via a downstream signal.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: September 3, 2019
    Assignee: ZTE Corporation
    Inventors: Jun Shan Wey, Junwen Zhang
  • Patent number: 10404381
    Abstract: A radio frequency (RF) link includes a link transmitter that includes a data modulator for modulating a data waveform together with an RF carrier, a photonic encoder coupled to the data modulator, and a transmitter antenna for transmitting an RF signal, wherein the RF signal comprises an output of the photonic encoder, and a link receiver including a receiver antenna for receiving the RF signal, a first laser source, a photonic limiter coupled to the first laser source and to the receiving antenna, a photonic decoder coupled to the photonic limiter, a photo-receiver coupled to the photonic decoder, and a demodulator coupled to the photo-receiver for demodulating an output of the photo-receiver with the RF carrier to form a data output.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: September 3, 2019
    Assignee: HRL Laboratories, LLC
    Inventor: Daniel Yap
  • Patent number: 10389473
    Abstract: A disclosed method for extending reach in an adaptive optical network may include selecting, for an optical channel having a given target distance and a given maximum data rate, the modulation format having the highest spectral efficiency among modulation formats supported in the adaptive optical network that are suitable for optical channels having the given target distance and the given maximum data rate, determining a symbol rate for the optical channel dependent on characteristics of transmission media for the optical channel, determining a number of subcarriers for the optical channel corresponding to the determined symbol rate, and activating subcarrier multiplexing (SCM) for the optical channel. Activating SCM may include configuring transponders to transmit or receive the traffic in the optical channel using the selected modulation format and the determined number of subcarriers. The method may be implemented by a network management system of the optical network.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 20, 2019
    Assignee: Fujitsu Limited
    Inventors: Olga I. Vassilieva, Inwoong Kim, Tadashi Ikeuchi
  • Patent number: 10382136
    Abstract: A computer-implemented method of handling Ethernet packets in a passive optical network (PON) is disclosed. The method comprises generating, by the one or more processors, an initial envelope header that indicates that the initial envelope header is not a preamble replacement; transmitting, over the PON, by the one or more processors, the initial envelope header; accessing, by the one or more processors, an eight-byte block from a first Ethernet packet of a plurality of Ethernet packets; in response to the eight-byte block being an Ethernet preamble, generating, by the one or more processors, a first envelope header that indicates that the envelope header is a preamble replacement; and transmitting, over the PON, by the one or more processors, the first envelope header.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 13, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Duane Richard Remein, Bo Gao, Yuanqiu Luo, Dianbo Zhao