Patents by Inventor Roger Durand

Roger Durand 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: 7221954
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 22, 2007
    Assignee: Autocell Laboratories, Inc.
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Patent number: 7215973
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 8, 2007
    Assignee: Autocell Laboratories Inc.
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Publication number: 20060291401
    Abstract: A system and method for Access Point (AP) channel selection based upon a Channel Quality Index (CQI) is described. The Channel Quality Index (CQI) is a value which quantifies a transmission quality of a channel. The transmission quality is evaluated based on a combination of different types of measured interference in the channel. In one embodiment the different types of measured interference include co-channel congestion, adjacent channel interference and in-band interference. The CQI is a value derived from the measurements, and for example may be a sum of all of the measurements.
    Type: Application
    Filed: June 23, 2005
    Publication date: December 28, 2006
    Inventors: Michael Yuen, David Hill, Roger Durand
  • Publication number: 20060292988
    Abstract: A system and method for Access Point (AP) channel selection based upon a Channel Quality Index (CQI) is described. The Channel Quality Index (CQI) is a value which quantifies a transmission quality of a channel. The transmission quality is evaluated based on a combination of different types of measured interference in the channel. In one embodiment the different types of measured interference include co-channel congestion, adjacent channel interference and in-band interference. The CQI is a value derived from the measurements, and for example may be a sum of all of the measurements.
    Type: Application
    Filed: June 23, 2005
    Publication date: December 28, 2006
    Inventors: Michael Yuen, David Hill, Roger Durand
  • Publication number: 20060239187
    Abstract: Migrating from a legacy spectrum allocation to a target spectrum allocation can be accomplished by adding new access points and, at a selected time, activating the new access points and deactivating the legacy access points with a remote network manager. Alternatively, the new access points can initially support legacy channels and at a selected time be reconfigured to support only the target channels. Alternatively, the new access points are initially activated in a mode which supports only a subset of the target channels and at a selected time reconfigured to support only the target channels. A remote network manager may be employed to remotely monitor, reconfigure, and trigger activation and deactivation of access points in support of the technique. New access points adapted to respond to inputs from the remote network manager further facilitate the invention.
    Type: Application
    Filed: April 25, 2005
    Publication date: October 26, 2006
    Inventors: Roger Durand, Michael Yuen
  • Publication number: 20060182064
    Abstract: In a wireless network an access point and/or wireless end device is operable in response to interference from another device to capture a sample of the interference, determine whether the interference originates from a known type of device, and prompt remedial actions based on whether the interference originates from a known type of device. The access point may include a table of known interference signatures and a table of counter measure plans, each interference signature being associated with a particular counter measure plan. Remedial actions include changing to an alternate operating channel and/or changing signal transmission characteristics.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 17, 2006
    Inventors: Roger Durand, Michael Yuen
  • Publication number: 20060171327
    Abstract: In a wireless network having an access point and/or at least one wireless end device, the access point and/or end device is operable to differentiate between normal communications and interference from another device in order to capture a sample of the interference, determine whether the interference originates from a known type of device, and prompt remedial actions based on whether the interference originates from a known type of device. One technique for differentiating between interference and normal communications is to induce a quiet interval during which normal communications are ceased. Another technique is to employ a parallel demodulation engine. The quiet interval may be assembled from temporally non-contiguous quiet gaps between normal communications. For interference sources which exhibit a pulse waveform the interference sources are analyzed based on pulse period and duration.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 3, 2006
    Inventors: Roger Durand, Michael Yuen
  • Publication number: 20060171326
    Abstract: In a wireless network having an access point and at least one wireless end device, the access point is operable to differentiate between normal communications and interference from another device in order to capture a sample of the interference, determine whether the interference originates from a known type of device, and prompt remedial actions such as moving communications to a distant channel, increasing transmission power, changing data rate, and packet fragmentation based on whether the interference originates from a known type of device. Interference pulse duration may be used to at least initially narrow the possible sources of interference. Pulse period may be employed to differentiate between interference sources which exhibit similar pulse duration. If pulse duration and period are not sufficient to identify the interference source then other characteristics may be examined, such as pulse waveform, roll off and period in relation to local power frequency.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 3, 2006
    Inventors: Roger Durand, Michael Yuen
  • Publication number: 20060171335
    Abstract: Potential alternate channels in a wireless network are periodically analyzed and ranked in terms of interference. The best ranked alternate channel is selected as the new operating channel if a decision is made to move from the current operating channel to an alternate channel. Because the potential alternate channels are pre-ranked, the move to the new channel can be executed relatively quickly, and with reduced risk of encountering unacceptable interference conditions. Various ranking categories may be used, including but not limited to a first category that is relatively free of interference, a second category that has some interference but will support degraded communications, and a third category that has an unacceptable level of interference. Within a given rank, preference may be given to channels that were most recently analyzed and ranked.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 3, 2006
    Inventors: Michael Yuen, Roger Durand, David Hill
  • Publication number: 20060171304
    Abstract: A wireless access point is operable to execute background scans of alternate channels by tuning to the alternate channel for short periods of time, thereby generating sub-windows of data. The sub-windows are calculated to have timing and duration that avoid disruption of communications on the active channel. Multiple background scan sub-windows are used to assemble a virtual target window of the alternate channel, e.g., a 100 mSec window, during which any periodic beacon within range might be expected to be received. The data such as beacon information is employed to generate a table ranking the alternate channels in terms of viability for communications.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 3, 2006
    Inventors: David Hill, Roger Durand, Floyd Backes
  • Publication number: 20040203688
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Application
    Filed: February 18, 2004
    Publication date: October 14, 2004
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Publication number: 20040192370
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Application
    Filed: February 18, 2004
    Publication date: September 30, 2004
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Publication number: 20040166847
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Publication number: 20040166846
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Publication number: 20040166889
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Publication number: 20040166851
    Abstract: The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Inventors: Floyd Backes, Gary Vacon, Paul Callahan, William Hawe, Roger Durand
  • Patent number: 6361001
    Abstract: The instant invention is a container holder for mixing slurry material in a 2½ or 5 gallon bucket. The container holder is formed from a one-piece raised top portion having a centrally disposed aperture allowing insertion of a stirring paddle. Depending from the top portion are two legs that extend downwardly and span the entire height of the bucket to be mixed with foot pads joined at the bottom of the legs extending outwardly therefrom which allow an individual to stand on during the mixing operation.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: March 26, 2002
    Inventor: Mark Roger Durand
  • Patent number: 5853757
    Abstract: A carrier for pills, tablets, or capsules allowing for ease of oral consumption by animals. The carrier having a preformed chamber allowing for the insertion of medication therein, the carrier is deformable causes securement of the medication within the chamber. The carrier masks the scent of medication and including a lubricant to allow for ease of consumption of the carrier and contained medication.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: December 29, 1998
    Inventors: Mark Roger Durand, Debra Marie Durand
  • Patent number: 5431891
    Abstract: Process for the treatment of a metal alloy based on uranium, generally in highly enriched form and other metallic elements, comprising a fluorination treatment with the aid of at least one fluorine-containing gas, optionally with an intermediate fluorination with the aid of a fluoric compound, a distillation treatment of the gaseous fluoride flow obtained in order to obtain pure uranium hexafluoride, as well as a mixing treatment of said hexafluoride with another more depleted hexafluoride to obtain the desired final isotopic content.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: July 11, 1995
    Assignee: Companie Generale des Matieres Nucleaires
    Inventors: Andre Gabriac, Airy-Pierre Lamaze, Roger Durand, Rene Romano
  • Patent number: D438467
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: March 6, 2001
    Inventor: Mark Roger Durand