LexDanaLexDanabeta
Inventor

Kim B. Roberts

Inventor
Nepean, CA

Overview

102→
Patents
1991–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 102 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Bprimary
H04BTransmission37%
H04JMultiplex communication25%
H04LTransmission of digital information, e.g. telegraphic communication18%
H04QSelecting5%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein4%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light4%
H03MCoding2%
G02BOptical elements, systems or apparatus2%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses1%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests1%
PatentTitleYear
10,992,416Forward error correction with compression coding202110,938,483Training-aided feedforward channel equalization202110,903,903Dimensional transformation in optical communication20218,781,317'Monitoring phase non-linearities in an optical communication system'20148,594,499'Monitoring phase non-linearities in an optical communications system'20138,340,524'Protected light source for multiple wavelength division multiplexed passive optical networks (WDM-PONs)'20128,170,418'Protected light source for multiple wavelength division multiplexed passive optical networks (WDM-PONS)'20127,769,305'High-speed digital signal processing in a coherent optical receiver'20107,701,842'Low conversion rate digital dispersion compensation'20107,684,712'Non-linear equalizer in a coherent optical receiver'20107,680,420'Optical E-field modulation using a directly driven laser'20107,676,161'Modulation E-field based control of a non-linear transmitter'20107,636,525'Signal acquisition in a coherent optical receiver'20097,627,252'Clock recovery from an optical signal with dispersion impairments'20097,606,498'Carrier recovery in a coherent optical receiver'20097,599,400'Methods and systems for reducing waiting-time jitter'20097,599,625'Method of initializing optical communication links'20097,561,797'Optical signal transmitter with active optical e-field degradation'20097,558,478'Preconfiguring compensation of optical path impairments'20097,555,227'Polarization compensation in a coherent optical receiver'20097,532,822'Clock recovery from an optical signal with polarization impairments'20097,522,841'Efficient data transmission and training of data processing functions'20097,457,538'Digital performance monitoring for an optical communications system'20087,403,473'Method and apparatus for accelerated protection switching in a multi-switch network element'20087,382,985'Electrical domain mitigation of polarization dependent effects in an optical communications system'20087,382,984'Electrical domain compensation of optical dispersion in an optical communications system'20087,376,358'Location specific optical monitoring'20087,369,578'Digital processing of SONET pointers'20087,356,256'Digital performance monitoring for an optical communications system'20087,352,971'Broadband control of polarization mode dispersion'20087,321,734'Digital synthesis of readily compensated optical signals'20087,305,183'Measurement of polarization dependent loss in an optical transmission system'20077,286,564'Mapping arbitrary signals into SONET'20077,277,603'Integrated optical waveform modulation'20077,272,308'Method of WDM channel tagging and monitoring, and apparatus'20077,266,306'Method for optical carrier suppression and quadrature control'20077,257,117'Mapping arbitrary signals'20077,245,582'Protection switching in a multi-stage switch fabric'20077,221,820'High spectral efficiency, high performance optical MUX and DEMUX architecture'20077,200,339'Method and apparatus for laser line-width compensation'20077,197,031'Cross-connection of high bandwidth signal traffic across independent parallel shelves'20077,162,536'Validation of a connection between arbitrary end-nodes in a communications network'20077,155,128'Decorrelation of WDM signals'20067,149,432'Method and apparatus for equalization across plural data channels'20067,065,103'Hyper-concatenation across multiple parallel channels'20067,046,700'Spectrally invisible framing of high error rate data signals'20067,023,942'Method and apparatus for digital data synchronization'20067,002,986'Mapping arbitrary signals into SONET'20066,975,649'Hyper-concatenation across independent pointer processors'20056,959,019'Aharmonic interleaving of forward error corrected (FEC) signals'20056,958,995'Non-blocking high capacity fine grain switch'20056,937,614'Transparent port for high rate networking'20056,915,348'Validation of a connection between arbitrary end-points in a communications network using an augmented SPE'20056,839,523'Monitoring distributed gain in an optical transmission system'20056,816,487'Mapping of high bandwidth connections in a multi-stage switch'20046,781,537'High speed digital to analog converter'20046,760,149'Compensation of polarization dependent loss'20046,735,259'Method and apparatus for optimization of a data communications system using sacrificial bits'20046,735,170'Method and system for establishing content-flexible connections in a communications network'20046,687,464'Optimization of a communications system based on identification of an optical medium'20046,654,411'Method and system for estimating error rate of a communication channel over a wide dynamic range'20036,522,436'Multiplexed transmission of optical signals'20036,509,990'Optical timing detection'20036,486,990'Method and apparatus for communicating a clock signal in a soliton optical transmission system'20026,483,617'Monitoring of nonlinear effects'20026,473,214'Methods of and apparatus for optical signal transmission'20026,313,932'Multiplexed transmission of optical signals'20016,282,007'Optical timing detection'20016,268,945'Stable power control for optical transmission systems'20016,252,692'Optical fibre transmission systems'20016,229,633'Optical sampling by modulating a pulse train'20016,222,652'Method of and apparatus for detecting transients in an optical transmission system'20016,175,671'Photonic crystal waveguide arrays'20016,166,850'Optical amplifier gain control'20006,144,486'Pump wavelength tuning of optical amplifiers and use of same in wavelength division multiplexed systems'20006,140,920'Optical transmission system element test'20006,128,111'Monitoring of nonlinear effects'20006,101,016'Optical transmission systems using optical amplifiers and wavelength division multiplexing'20006,101,012'Optical add/drop multiplexer/demultiplexer'20006,075,628'Fault location in optical communication systems'20006,072,614'Monitoring induced counterpropagating signals in optical communications systems'20006,067,180'Equalization, pulse shaping and regeneration of optical signals'20006,067,179'Optical transmission systems using optical amplifiers and wavelength division multiplexing'20006,064,501'Method of determining optical amplifier failures'20006,031,647'Stable power control for optical transmission systems'20006,005,695'Optical transmission system'19995,999,284'Optical detection and logic devices with latching function'19995,999,283'Optical logic devices and methods'19995,999,258'Optical interference measurement method and system'19995,969,840'Optical element power control'19995,963,312'Optical transmission system fault analysis'19995,959,749'Optical add/drop multiplexer/demultiplexer'19995,949,560'Optical transmission system'19995,896,391'Forward error correction assisted receiver optimization'19995,892,858'Duobinary coding and modulation technique for optical communication systems'19995,880,837'Eye measurement of optical signals by optical sampling'19995,859,716'Self-stimulation signal detection in an optical transmission system'19995,801,858'Optical transmission systems using optical amplifiers and wavelength division multiplexing'19985,579,328'Digital control of laser diode power levels'19965,513,029'Method and apparatus for monitoring performance of optical transmission systems'19965,365,510'Communications system with a single protection loop'19944,995,045'Laser control circuit'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2000Patents assigned to NORTHERN TELECOM LTD (14)· patent assignee history
1991–2000Based in Kanata, CA· patent location history
1998–2001Based in Herts, GB· patent location history
1999–2000Patents assigned to NORTEL NETWORKS CORP (12)· patent assignee history
1999–2003Based in Welwyn Garden City, GB· patent location history
2000–2012Patents assigned to NORTEL NETWORKS LTD (69)· patent assignee history
2000–2014Based in Nepean, CA· patent location history
2006–2021Based in Ottawa, CA· patent location history
2012–2021Patents assigned to ROBERTS KIM B (5)· patent assignee history
2021Patents assigned to CIENA CORP (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NORTEL NETWORKS LTD692000–2012
NORTHERN TELECOM LTD141991–2000
NORTEL NETWORKS CORP121999–2000
ROBERTS KIM Bself52012–2021
CIENA CORP32021
Locations
LocationPatentsSpan
Nepean, CA622000–2014
Welwyn Garden City, GB231999–2003
Herts, GB71998–2001
Kanata, CA61991–2000
Ottawa, CA42006–2021