Patents Assigned to Viavi Solutions Inc.
  • Publication number: 20190342593
    Abstract: A network test instrument is operable to generate an interference profile for a bursty channel of a cable television network. Frequency spectrum data of a received signal is cross-correlated with predetermined frequency spectrum data to identify traces representative of noise. The interference profile may be built from the traces.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 7, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Cinna Soltanpur, Vincent Michael Zipparo, Daniel Keith Chappell
  • Patent number: 10469199
    Abstract: A test instrument or host device can apply inverse transmitter and receiver functions to data transmitted or received by an electrical and optical transponder. The inverse transmitter and receiver functions are applied to counteract internal signal conversion processes of the transponder. Forward error correction and test pattern analysis may be performed on signals received from the transponder after the inverse receiver function is applied to the received signals.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: November 5, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventor: Andrew Neal
  • Patent number: 10470070
    Abstract: A test device for testing a power of a signal at a cell site using RFoCPRI™ is disclosed. The test device may comprise a receiver to receive a signal from a test point near a baseband unit (BBU) of a cell site. The test device may also comprise a processor to determine power of the signal. The processor may identify IQ data from the signal, determine an offset based on a noise floor determined from at least one specification of a remote radio head (RRH) of the cell site, and generate a power spectrum based on the IQ data and the offset. The processor may transmit the power spectrum to an output (e.g., display), where the power spectrum may be representative of the power of the signal between the RRH and antennas of the cell site.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: November 5, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Nick Ghaemi, Roy Anderson
  • Publication number: 20190334804
    Abstract: A method and system for categorizing Internet Protocol (IP) based network traffic is configured to monitor domain name system (DNS) transactions between at least one customer device and a DNS service. The DNS transactions are used to populate a data table, which is used to enrich a data record (e.g., IPDR). In particular, an IP address and/or customer ID in the data record is used to look up the corresponding domain name in the data table, which is added to the data record. The enriched data record is used to categorize the IP traffic.
    Type: Application
    Filed: July 8, 2019
    Publication date: October 31, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Patrick LEASK, Jürgen VOSS, Rolf BAESSLER
  • Patent number: 10455082
    Abstract: A test instrument connectable to a network to provide copper impairment testing and remediation in a digital subscriber line (DSL) service is provided. The test instrument may comprise a port connectable to a test point in a network. The test instrument may also comprise a processing circuit to perform tests in the following categories: (i) shorts, grounds, and opens, (ii) true length, (iii) balance, and (iv) series fault, wherein the combination of these tests may determine copper impairment. Once tests are conducted, one or more remediation recommendations may be provided based at least in part on failure in one of the test categories. The test results and remediation recommendations may then be presented at an output, such as a display at a test instrument or user device.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: October 22, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Brian Bowman, Reynald Dupuis, Paul Snead
  • Patent number: 10451783
    Abstract: An optical filter may include a first group of layers. The first group of layers may include alternating layers of a first dielectric material, of a group of dielectric materials, and a second dielectric material of the group of dielectric materials. The optical filter may include a second group of layers. The second group of layers may include alternating layers of a third dielectric material, of the group of dielectric materials, and a fourth dielectric material of the group of dielectric materials. The optical filter may include a third group of layers. The third group of layers may include alternating layers of a fifth dielectric material, of the group of dielectric materials, a sixth dielectric material, of the group of dielectric materials, and a metal material. The third group of layers may be disposed between the first group of layers and the second group of layers.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: October 22, 2019
    Assignee: VIAVI Solutions Inc.
    Inventor: Georg J. Ockenfuss
  • Publication number: 20190319669
    Abstract: Non-disruptive sweep measurements using low power coherent signals overcome the limitations of prior art frequency response systems for cable networks. Modulated or unmodulated, e.g. continuous wave (CW), test signals are transmitted into the network at a first or input point (input point is in the head end for forward sweep; input point is in the field for reverse sweep). The test signals are transmitted continuously at multiple frequencies, so as a composite they form a wideband, OFDM-like (orthogonal frequency-division multiplexing) waveform. A receiver at a second or output point generates power reading measurements, from which the frequency response of the network is produced.
    Type: Application
    Filed: March 19, 2019
    Publication date: October 17, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Ben MAXSON, Koji Okamoto
  • Patent number: 10444213
    Abstract: A device may receive a classification model generated based on a set of spectroscopic measurements performed by a first spectrometer. The device may store the classification model in a data structure. The device may receive a spectroscopic measurement of an unknown sample from a second spectrometer. The device may obtain the classification model from the data structure. The device may classify the unknown sample into a Kosher or non-Kosher group or a Halal or non-Halal group based on the spectroscopic measurement and the classification model. The device may provide information identifying the unknown sample based on the classifying of the unknown sample.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: October 15, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Nada A. O'Brien, Changmeng Hsiung
  • Patent number: 10439920
    Abstract: A network device may include one or more processors configured to receive a measurement message en route to a destination via a network, where the measurement message includes a test packet of a two-way active measurement protocol (TWAMP) session. The network device may determine information based on the measurement message. The information may include a timestamp identifying a time associated with the measurement message, and may identify the measurement message. The network device may store or provide the information for determination of network performance information regarding the network device. The network device may transmit the measurement message toward the destination.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: October 8, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Michael McCallen, Joseph Haver, Timothy Warland
  • Publication number: 20190299691
    Abstract: A security device is disclosed that has an image formed upon a substrate. The image has a first printed region and a second different printed region both printed with a same ink formulation of field alignable flakes. At least one of the printed regions has optically variable effects. One of the first and second printed regions at least partially surrounds the other. The second printed region is formed of thin parallel lines and the first printed region has substantially wider lines than are printed in the second printed region. The area density of the ink in a line in the first group of wider lines is greater than the area density of a line in the second group of narrower lines. A surprising effect of this image is that particles or flakes in the ink are field aligned so as to produce a visible kinematic dynamic effect visible in the first region and not visible in the second region when the image is tilted or rotated.
    Type: Application
    Filed: June 7, 2019
    Publication date: October 3, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
  • Publication number: 20190305843
    Abstract: A test device for Optical Transport Network (OTN) testing using MFAS-aligned pseudorandom binary sequence (PRBS) patterns is disclosed. The test device may comprise a signal generator to generate a test signal that comprises an MFAS-aligned PRBS pattern. The test device may also comprise a transmitter to transmit the test signal into an OTN and a receiver to receive the test signal from the OTN. The test device may comprise a processor to determine whether the received test signal matches the transmitted test signal based on the MFAS-aligned PRBS pattern. The test device employing a technique that uses an MFAS-aligned PRBS pattern may help ensure quality of service in OTN, especially for transmission of secured data.
    Type: Application
    Filed: May 8, 2018
    Publication date: October 3, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Xiaoli JIANG, Guylain BARLOW
  • Patent number: 10429240
    Abstract: A device may obtain a master calibration set, associated with a master calibration model of a master instrument, that includes spectra, associated with a set of samples, generated by the master instrument. The device may identify a selected set of master calibrants based on the master calibration set. The device may obtain a selected set of target calibrants that includes spectra, associated with the subset of the set of samples, generated by the target instrument. The device may create a transfer set based on the selected set of master calibrants and the selected set of target calibrants. The device may create a target calibration set, corresponding to the master calibration set, based on the transfer set. The device may generate, using an optimization technique associated with the transfer set and a support vector regression modeling technique, a transferred calibration model, for the target instrument, based on the target calibration set.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: October 1, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Changmeng Hsiung, Lan Sun, Christopher G. Pederson
  • Patent number: 10425157
    Abstract: According to examples, a wavelength identification and analysis sensor may include a wavelength transmitter, operably connectable to an input or output of a wavelength selective device of a wavelength division multiplex (WDM) network, to transmit test signals on a plurality of wavelengths into the input or output of the wavelength selective device of the WDM network. A wavelength analyzer is to detect returned signals from the input or output of the wavelength selective device of the WDM network, with each returned signal being associated with one of the transmitted test signals. Further, the wavelength analyzer is to analyze the returned signals and identify, based on the analysis of the returned signals, a wavelength associated with the input or output of the wavelength selective device of the WDM network.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 24, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventor: Andre Champavere
  • Patent number: 10422743
    Abstract: A lightpipe is coupled to a spectrometer based on a laterally variable optical filter. The lightpipe may be used for both guiding the illuminating light towards a sample and collecting light reflected or emitted by the sample upon illumination, for spectral measurements at a distance from the sample afforded by the lightpipe. The lightpipe may include a slab of homogeneous transparent material for unconstrained bidirectional propagation of light in bulk of the material. The lightpipe may be solid, hollow, or sectioned for separated guiding of the illuminating and the reflected light.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: September 24, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Curtis R. Hruska, Benjamin F. Catching, Marc K. Von Gunten
  • Publication number: 20190283070
    Abstract: A method of forming a thin film device includes coating a web with a multi-layer thin film; and applying a mechanical force to release the multi-layer thin film from the web. Additional methods of forming a thin film device are disclosed.
    Type: Application
    Filed: March 8, 2019
    Publication date: September 19, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Alberto ARGOITIA, Kangning LIANG, Johannes P. SEYDEL, Jaroslaw ZIEBA
  • Publication number: 20190285775
    Abstract: An optical device includes a substrate and a stack of layers including metal oxides. Another optical device includes a stack of layers including metal oxides and a surface treating agent. A method of making an optical device is also disclosed.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 19, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Jaroslaw ZIEBA, Georg J. OCKENFUSS, Markus BILGER
  • Patent number: 10419322
    Abstract: A method of collecting information about a plurality of test devices connected in a network is provided. The method includes: identifying routable network addresses within a plurality of the network addresses, and sending discovery packets to the plurality of routable network addresses, receiving responses from the test devices, obtaining the information about the test devices, and storing the information so as to associate, for each of the test devices, the test-device information with at least one of the routable network addresses. The routable network addresses are stored in non-volatile memory for repeated use in re-discovery of the test devices in the network.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: September 17, 2019
    Assignee: VIAVI Solutions Inc.
    Inventors: Canning Hsueh, Samuel M. Bauer, Michael Stevens, John P. Mcintire
  • Publication number: 20190277707
    Abstract: In some examples, a temperature distribution sensor may include a laser source to emit a laser beam that is tunable over a wavelength range. The wavelength range may be less than a Raman bandwidth in a device under test (DUT), or of-the-order-of the Raman bandwidth in the DUT. A pulsed source may apply a pulse drive signal to the laser beam or to a modulator to modulate the laser beam that is to be injected into the DUT. A bandpass filter may be operatively disposed between the laser source and the DUT, and may be configured to an anti-Stokes wavelength that is narrower than the Raman bandwidth. A photodiode may be operatively disposed between the bandpass filter and the DUT to acquire, from the DUT, anti-Stokes optical time-domain reflectometer traces for two preset wavelengths of the laser beam to determine a temperature distribution for the DUT.
    Type: Application
    Filed: April 4, 2018
    Publication date: September 12, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventor: Vincent LECOEUCHE
  • Publication number: 20190277725
    Abstract: A fiber-optic interconnection stabilization apparatus for a measurement system is provided. The apparatus may comprise a main body comprising an enclosure and two openings. The enclosure may encase a fiber-optic cable within the main body in an organized manner. The two openings may fit connecting ends of the fiber-optic cable such that the connecting ends of may be exposed in order to connect two modular components of a measurement system and form a closed measurement loop. The main body, when in a closed configuration, may stabilizes the fiber-optic cable encased within from external conditions, such as mechanical, thermal, or other environmental conditions that may affect measurements.
    Type: Application
    Filed: June 1, 2018
    Publication date: September 12, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Robert Matthew Adams, Joshua Philipson, Elias Debs, Shauna Peach-Donovan, Jeff Graves
  • Publication number: 20190277724
    Abstract: A test instrument tests an optical component of a fiber optic network. The test instrument determines signal parameters describing pulses to be emitted by lasers of the test instrument to test the optical component, and directly modulates the lasers to repeatedly emit the pulses at different wavelengths on a single fiber optic cable in a time division multiplexing manner. The test instrument triggers powering measurements to coincide with the emitted pulses, and determines performance parameters of the optical component based on the triggered power measurements.
    Type: Application
    Filed: June 29, 2018
    Publication date: September 12, 2019
    Applicant: VIAVI SOLUTIONS INC.
    Inventors: Robert Matthew ADAMS, Joshua PHILIPSON, Chris WAGNER, Grant TESSARO