Marc L Morrissette from 23 Landau Rd, North Attleboro, MA 02762, age 58, Phone: (508)6995877

Us Patents

Using Equalization Coefficients Of End Devices In A Cable Television Network To Determine And Diagnose Impairments In Upstream Channels
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US Patent:

8526485, Sep 3, 2013
Filed:

Sep 23, 2009
Appl. No.:

12/565185
Inventors:

Robert J. Thompson - Monroeton PA, US
Michael J. Cooper - Marietta GA, US
Charles S. Moore - Langhorne PA, US
John L. Moran - Uxbridge MA, US
Marc L. Morrissette - Plainville MA, US
Assignee:

General Instrument Corporation - Horsham PA
International Classification:

H04L 5/16
H04B 17/00
US Classification:

375224, 375222
Abstract:

A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.

Upstream Channel Bonding Partial Service Using Spectrum Management
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US Patent:

8576705, Nov 5, 2013
Filed:

Nov 18, 2011
Appl. No.:

13/300101
Inventors:

Brian K. Thibeault - Attleboro MA, US
Michael J. Cooper - Augusta GA, US
Marc L. Morrissette - Plainville MA, US
Assignee:

General Instrument Corporation - Horsham PA
International Classification:

H04L 12/26
US Classification:

370225
Abstract:

A method and computing device receives data packets on an upstream bonding group in full service mode, where the upstream bonding group includes a set of channels and each channel has a transmission quality. The method detects that a select channel in the set of channels is impaired when the transmission quality of the select channel is below a threshold value, and transitions the receiving of the data packets from full service mode to partial service mode by disabling data grant scheduling on the select channel. The method monitors the select channel using a spectrum management method while the receiving of the data packets is in partial service mode. The method transitions the receiving of the data packets from partial service mode to full service mode when a result from the spectrum management method indicates that the select channel can transmit data packets error free.

Method And Apparatus For Dynamically Changing The Preamble Length Of A Burst Communication
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US Patent:

20070211618, Sep 13, 2007
Filed:

Mar 13, 2006
Appl. No.:

11/374447
Inventors:

Michael Cooper - Marietta GA, US
Wei-Hung Hui - Sharon MA, US
John Moran - Uxbridge MA, US
Marc Morrissette - Plainville MA, US
International Classification:

H04J 11/00
US Classification:

370208000, 370252000
Abstract:

Preamble length of burst communication signals dynamically changed to compensate in changes to linear distortion of a communication channel. Pre-equalization coefficients are provided to network element which pre-equalize communications with the CMTS. Long preamble lengths are used for a select few communications while short preamble lengths are used for the rest of the communication signals. When change in distortion characteristics is detected, a station maintenance is performed on the affected network element and new pre-equalization coefficients are determined and provided to the network element. Alternatively, all communications may be provided with long preamble lengths and communications may continue while the CMTS determines new pre-equalization coefficients.

Adaptive Protocol/Initialization Technique Selection
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US Patent:

20120084416, Apr 5, 2012
Filed:

Sep 30, 2010
Appl. No.:

12/895059
Inventors:

Brian K. Thibeault - Attleboro MA, US
Wei-Hung Hui - Sharon MA, US
Marc L. Morrissette - Plainville MA, US
Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA
International Classification:

G06F 15/177
US Classification:

709222
Abstract:

A method for selection of an initialization technique and protocol for a communications device is provided. The method includes, but is not limited to, selecting a primary initialization technique from a set list of initialization techniques, implementing the primary initialization technique to initialize and move the communications device, and determining if the communications device has been initialized and moved. If the communications device has not been initialized and moved upon implementing the primary initialization technique, an additional initialization technique is selected from the set list of initialization techniques and implemented to initialize and move the communications device.

Method And Apparatus For Updating Equalization Coefficients Of Adaptive Pre-Equalizers
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US Patent:

20130051442, Feb 28, 2013
Filed:

Aug 30, 2011
Appl. No.:

13/221531
Inventors:

Michael J. Cooper - Augusta GA, US
Charles S. Moore - Langhorne PA, US
John L. Moran - Uxbridge MA, US
Marc L. Morrissette - Plainville MA, US
Robert J. Thompson - Monroeton PA, US
Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA
International Classification:

H04B 17/00
H03H 7/40
H04B 1/38
US Classification:

375222, 375224, 375232
Abstract:

A method and apparatus for updating equalization coefficients of an adaptive pre-equalizer of a network element are provided. The method includes monitoring a communications channel to measure distortion of a communications signal received from the network element and detecting whether a transient impairment is present in the communication signal. When a transient impairment is not detected to be present, a pre-equalization coefficient update is transmitted to the network element. However, when a transient impairment is detected to be present, at least selected ones of the pre-equalization coefficients are scaled before the update is transmitted to the network element or the update is withheld from being transmitted to the network element. An apparatus is also disclosed.

Method And Apparatus For Characterizing Impulse Noiseand Optimizing Data Link Efficiency
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US Patent:

20140029654, Jan 30, 2014
Filed:

Jul 30, 2012
Appl. No.:

13/562257
Inventors:

Robert J. Thompson - Monroeton PA, US
Charles S. Moore - Langhorne PA, US
Marc L. Morrissette - Plainville MA, US
Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA
International Classification:

H04L 12/26
H04B 1/38
US Classification:

375222, 375227
Abstract:

Method and apparatus for characterizing an impulse noise impairment impacting communications over data links of a network are provided. A test signal comprising a bit stream of a predetermined bit sequence and packet size is configured and transmitted over the data links. The test signal is received, and the bit stream of the test signal as transmitted is compared to a bit stream of the test signal as received to identify differences in bit sequence. Thereafter, characteristics of the impulse noise impairment impacting communications between the data links are estimated based on the detected differences in bit sequence.

Method Of Characterizing Impairments Detected By Equalization On A Channel Of A Network
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US Patent:

20140029655, Jan 30, 2014
Filed:

Jul 30, 2012
Appl. No.:

13/562261
Inventors:

Robert J. Thompson - Monroeton PA, US
Charles S. Moore - Langhorne PA, US
Marc L. Morrissette - Plainville MA, US
Assignee:

GENERAL INSTRUMENT CORPORATION - Horsham PA
International Classification:

H04L 12/26
US Classification:

375224
Abstract:

An automated method of characterizing distortion detected by equalization on a channel of a network is provided. Equalization stress of an observed channel equalization response of an end device of the network is estimated, and equalization stress is calculated for a theoretical channel equalization response of the end device mathematically based on the observed channel equalization response and a theoretical removal of a suspected impairment from the network. The above referenced calculating step is separately repeated for each of a plurality of suspected impairments stored in a database of suspected impairments. A highest ranking suspected dominant impairment is determined from the database of suspected impairments such that removal of the highest ranking suspected dominant impairment from the network would provide a greatest reduction of equalization stress of a channel equalization response of the end device.

Capture And Analysis Of Transient Events In Hybrid Fiber-Coaxial (Hfc) Networks
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US Patent:

20170019147, Jan 19, 2017
Filed:

Feb 12, 2016
Appl. No.:

15/043042
Inventors:

- Plano TX, US
Marc L. Morrissette - Plainville MA, US
International Classification:

H04B 3/46
H04B 10/077
Abstract:

A coaxial cable remote diagnostic management tool (RDMT) comprises a receiver configured to receive a first signal, wherein the first signal is a time domain signal; and receive an instruction to analyze the first signal; and a processor coupled to the receiver and configured to: generate a trigger based on the instruction; convert the first signal into a second signal, wherein the second signal is a frequency domain signal; perform a comparison of the trigger to the second signal; and process the second signal based on the comparison.