Patents by Inventor Douglas L. Jones
Douglas L. Jones 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).
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Patent number: 11947403Abstract: A method for operating a termination device of an access communication network includes (a) performing, at the termination device, a first start-up procedure, (b) after performing the first start-up procedure, detecting, at the termination device, presence of a communication signal meeting one or more predetermined criteria, and (c) in response to detecting presence of the communication signal meeting the one or more predetermined criteria, performing, at the termination device, a second start-up procedure that is different from the first start-up procedure.Type: GrantFiled: July 12, 2022Date of Patent: April 2, 2024Assignee: Cable Television Laboratories, Inc.Inventors: Jason W. Rupe, Douglas D. Jones, Stephen L. Burroughs
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Patent number: 9093079Abstract: A maximum-kurtosis, distortionless response (MKDR) technique and an extension, the maximum-kurtosis, Wiener estimate (MKWE) technique, are provided. In one form, blind estimates of the speech source's channel response are made from the microphone data and MVDR is applied. The source direction is estimated by finding weights that maximize output kurtosis, or the fourth central statistical moment, in the frequency domain. The MKWE approach approximates the Wiener filter by using MKDR-output noise power estimates to compute a Wiener post-filter. These approaches can be extended to block-adaptive versions if the speech source is not quickly moving in space.Type: GrantFiled: December 9, 2010Date of Patent: July 28, 2015Assignee: Board of Trustees of the University of IllinoisInventors: Matthew D. Kleffner, Douglas L. Jones
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Publication number: 20110231185Abstract: A maximum-kurtosis, distortionless response (MKDR) technique and an extension, the maximum-kurtosis, Wiener estimate (MKWE) technique, are provided. In one form, blind estimates of the speech source's channel response are made from the microphone data and MVDR is applied. The source direction is estimated by finding weights that maximize output kurtosis, or the fourth central statistical moment, in the frequency domain. The MKWE approach approximates the Wiener filter by using MKDR-output noise power estimates to compute a Wiener post-filter. These approaches can be extended to block-adaptive versions if the speech source is not quickly moving in space.Type: ApplicationFiled: December 9, 2010Publication date: September 22, 2011Inventors: Matthew D. Kleffner, Douglas L. Jones
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Patent number: 7688678Abstract: One embodiment of the invention includes a processing subsystem (30) responsive to the detection of sound coming from a room (26) to establish an acoustic impulse response for the room (26), and determine a number of sound reflections corresponding to the impulse response. This subsystem (30) is further operable to determine volume of the room (26), one or more dimensions of the room (26) and/or at least one absorption coefficient of a room boundary as a function of the sound reflections.Type: GrantFiled: October 26, 2005Date of Patent: March 30, 2010Assignee: The Board of Trustees of the University of IllinoisInventors: Erik Larsen, Albert Feng, Douglas L. Jones
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Patent number: 7613309Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing aids, voice input devices, surveillance devices, and other applications.Type: GrantFiled: November 7, 2002Date of Patent: November 3, 2009Inventors: Douglas L. Jones, Michael E. Lockwood, Robert C. Bilger, Carolyn T. Bilger, legal representative, Albert S. Feng, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Mark Elledge, Chen Liu
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Patent number: 7577266Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing, cochlear implants, speech recognition, voice input devices, surveillance devices, hands-free telephony devices, remote telepresence or teleconferencing, wireless acoustic sensor arrays, and other applications.Type: GrantFiled: July 11, 2006Date of Patent: August 18, 2009Assignee: The Board of Trustees of the University of IllinoisInventors: Albert S. Feng, Michael E. Lockwood, Douglas L. Jones, Carolyn J. Bilger, legal representative, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Robert C. Bilger
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Patent number: 7512448Abstract: A number of ear-worn hearing system devices are provided that each include a pair of electrodes to transmit time varying electrical signals therebetween when in contact with skin of a user's body. The devices each include a housing, a sound sensor, and processing circuitry included within the housing. The electrodes are coupled to the circuitry and are spaced apart from one another a distance sufficient to provide capacitance between the electrodes below a desired threshold. The electrodes are disposed along the housing for placement on locations of the user's body where skin contact is not likely to be disrupted by nominal body movements.Type: GrantFiled: January 10, 2003Date of Patent: March 31, 2009Assignee: Phonak AGInventors: Crista Malick, Xie Qi, Mitesh Parikh, Steve Franke, Douglas L. Jones, Jeffery B. Larsen, Christopher D. Schmitz, Francois Callias
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Publication number: 20090054248Abstract: A method of detecting cardiac arrhythmia in a patient is described. This method involves determining whether there is a mutation in the nucleotide sequence, the amino acid sequence, or both, of connexin40 obtained from a patient. The mutation may be localized within the transmembrane domain of connexin40. Furthermore, there is described a method of identifying a compound for the treatment of cardiac arrhythmia. This method involves providing a cell culture that is characterized by having impaired intracellular trafficking, impaired electrical coupling, reduced gap junction plaque formation, reduced intracellular coupling, or a combination thereof, when compared to a wild-type cell. A compound is added to the cell culture, and restoration of intracellular trafficking, electrical coupling, gap junction plaque formation, intracellular coupling, or a combination thereof, is monitored.Type: ApplicationFiled: April 28, 2005Publication date: February 26, 2009Inventors: Michael H. Gollob, Douglas L. Jones, Andrew D. Krahn
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Publication number: 20080052390Abstract: A system for virtual private network (VPN) address persistence is provided. The system includes a VPN capable network device, wherein the network device further includes a VPN data monitor and a VPN queuing device. The system may also include a server, an enterprise firewall, and/or a gateway server, each with its own local VPN data monitor and VPN queuing device in accordance with embodiments of the present invention.Type: ApplicationFiled: August 28, 2006Publication date: February 28, 2008Applicant: International Business Machines CorporationInventors: Douglas L. Jones, Bryan D. Osenbach
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Patent number: 7278157Abstract: In a data communications network, a split proxy can include a split proxy server disposed behind a firewall in a private portion of the data communications network; a split proxy client disposed in a client computing device positioned externally to the private portion of the data communications network; a split proxy client interface to at least one client application in the client computing device, and a split proxy server interface to at least one server application corresponding to the at least one client application in the private portion of the data communications network. A tunnel can be established between the split proxy client and split proxy server. The tunnel can host all Internet Protocol (IP) data traffic between the client application and the corresponding server application in the private portion of the data communications network.Type: GrantFiled: March 14, 2002Date of Patent: October 2, 2007Assignee: International Business Machines CorporationInventors: Douglas L. Jones, William C. Wimer, II
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Patent number: 7076072Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing, cochlear implants, speech recognition, voice input devices, surveillance devices, hands-free telephony devices, remote telepresence or teleconferencing, wireless acoustic sensor arrays, and other applications.Type: GrantFiled: April 9, 2003Date of Patent: July 11, 2006Assignee: Board of Trustees for the University of IllinoisInventors: Albert S. Feng, Michael E. Lockwood, Douglas L. Jones, Carolyn J. Bilger, legal representative, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Robert C. Bilger, deceased
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Patent number: 6987856Abstract: A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with a processor. The processor receives aural signals from two sensors each at a different location. The two inputs to the processor are converted from analog to digital format and then submitted to a discrete Fourier transform process to generate discrete spectral signal representations. The spectral signals are delayed by a number of time intervals in a dual delay line to provide a number of intermediate signals, each corresponding to a different spatial location relative to the two sensors. Locations of the noise source and the desired source are determined and the spectral content of the desired signal is determined from the intermediate signal corresponding to the noise source locations. Inverse transformation of the selected intermediate signal followed by digital to analog conversion provides an output signal representative of the desired signal.Type: GrantFiled: November 16, 1998Date of Patent: January 17, 2006Assignee: Board of Trustees of the University of IllinoisInventors: Albert S. Feng, Chen Liu, Robert C. Bilger, Douglas L. Jones, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler
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Patent number: 6978159Abstract: A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with processor (30). Processor (30) receives aural signals from two sensors (22, 24) each at a different location. The two inputs to processor (30) are converted from analog to digital format and then submitted to a discrete Fourier transform process to generate discrete spectral signal representations. The spectral signals are delayed to provide a number of intermediate signals, each corresponding to a different spatial location relative to the two sensors. Locations of the noise source and the desired source, and the spectral content of the desired signal are determined from the intermediate signal corresponding to the noise source locations. Inverse transformation of the selected intermediate signal followed by digital to analog conversion provides an output signal representative of the desired signal with output device (90).Type: GrantFiled: March 13, 2001Date of Patent: December 20, 2005Assignee: Board of Trustees of the University of IllinoisInventors: Albert S. Feng, Chen Liu, Douglas L. Jones, Robert C. Bilger, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler
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Publication number: 20040254863Abstract: An asset maintaining, controlling and accessing program includes software instructions for controlling a computer with a display to provide a graphical user interface including drag and drop features, point-and-click access to user and system functions, and drop-down menus. The Program validates log-on and includes encrypted passwords and multiple levels of customizable security for controlling user access to sensitive data and instructions. A plurality of repositories are included and each is connected to store different asset information. Software instructions perform a plurality of user functions including transferring assets from one of the plurality of repositories to another of the plurality of repositories so that the program controlling the computer display provides selected information stored in the plurality of repositories to a user and stores the information in a directed repository.Type: ApplicationFiled: August 23, 2002Publication date: December 16, 2004Inventors: Douglas L. Jones, James G. Simmons
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Publication number: 20040213415Abstract: Included in the embodiments of the present invention is a technique to detect sound with a sensor to generate a corresponding sound signal and iteratively determine two or more values with a maximum likelihood function for evaluation of reverberation time. One of these values corresponds to a time constant parameter, and another of these values corresponds to a diffusive power parameter. An estimate representative of the reverberation time is further provided as a function of an order-statistics filter.Type: ApplicationFiled: March 24, 2004Publication date: October 28, 2004Inventors: Ratnam Rama, Albert S. Feng, Douglas L. Jones, Charissa R. Lansing, William D. O'Brien
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Publication number: 20040138723Abstract: A number of ear-worn hearing system devices are provided that each include a pair of electrodes to transmit time varying electrical signals therebetween when in contact with skin of a user's body. The devices each include a housing, a sound sensor, and processing circuitry included within the housing. The electrodes are coupled to the circuitry and are spaced apart from one another a distance sufficient to provide capacitance between the electrodes below a desired threshold. The electrodes are disposed along the housing for placement on locations of the user's body where skin contact is not likely to be disrupted by nominal body movements.Type: ApplicationFiled: January 10, 2003Publication date: July 15, 2004Inventors: Crista Malick, Xie Qi, Mitesh Parikh, Steve J. Franke, Douglas L. Jones, Jeffery B. Larsen, Christopher D. Schmitz, Francois Callias
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Publication number: 20030177384Abstract: ABSTRACT In a data communications network, a split proxy can include a split proxy server disposed behind a firewall in a private portion of the data communications network; a split proxy client disposed in a client computing device positioned externally to the private portion of the data communications network; a split proxy client interface to at least one client application in the client computing device, and a split proxy server interface to at least one server application corresponding to the at least one client application in the private portion of the data communications network. A tunnel can be established between the split proxy client and split proxy server. The tunnel can host all Internet Protocol (IP) data traffic between the client application and the corresponding server application in the private portion of the data communications network.Type: ApplicationFiled: March 14, 2002Publication date: September 18, 2003Applicant: International Business Machines CorporationInventors: Douglas L. Jones, William C. Wimer
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Publication number: 20030138116Abstract: System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing aids, voice input devices, surveillance devices, and other applications.Type: ApplicationFiled: November 7, 2002Publication date: July 24, 2003Inventors: Douglas L. Jones, Michael E. Lockwood, Robert C. Bilger, Albert S. Feng, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler, Mark Elledge, Chen Liu, Carolyn T. Bilger
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Patent number: 6400773Abstract: Optimum bit rates and power levels are determined for subchannels in multicarrier communication systems. A tangent of the rate-power curve has a slope &lgr;. The slope is defined by the quotient difference between high/low power and high/low rate. A particular &lgr; is evaluated to find its corresponding total power followed by an update of &lgr;, in the form of an increase or decrease, to get closer to the optimal solution. Each &lgr; is evaluated to find the optimal operating point for each subchannel on the rate-power curve by summing the power allocated to the subchannels, and comparing the result to the power budget. Look-up tables are stored for individual channels, but similarity between channels permits joint use of look-up tables by multiple channels. The tables are used to determine the rate-power characteristics at each iteration.Type: GrantFiled: June 4, 1999Date of Patent: June 4, 2002Assignee: The Board of Trustees of the University of IllinoisInventors: Brian Scott Krongold, Kannan Ramchandran, Douglas L. Jones
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Publication number: 20010031053Abstract: A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with processor (30). Processor (30) receives aural signals from two sensors (22, 24) each at a different location. The two inputs to processor (30) are converted from analog to digital format and then submitted to a discrete Fourier transform process to generate discrete spectral signal representations. The spectral signals are delayed to provide a number of intermediate signals, each corresponding to a different spatial location relative to the two sensors. Locations of the noise source and the desired source, and the spectral content of the desired signal are determined from the intermediate signal corresponding to the noise source locations. Inverse transformation of the selected intermediate signal followed by digital to analog conversion provides an output signal representative of the desired signal with output device (90).Type: ApplicationFiled: March 13, 2001Publication date: October 18, 2001Inventors: Albert S. Feng, Chen Liu, Douglas L. Jones, Robert C. Bilger, Charissa R. Lansing, William D. O'Brien, Bruce C. Wheeler