Patents by Inventor David L. Propp
David L. Propp 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: 10680872Abstract: A modulation system and method for enabling communications across a noisy media environment is configured to employ a dynamically reconfigurable QAM modulation scheme and adjust transmission characteristics in response to information received in order to modify performance of system components.Type: GrantFiled: August 20, 2018Date of Patent: June 9, 2020Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, Khaled Saab, David L. Propp
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Publication number: 20180359129Abstract: A modulation system and method for enabling communications across a noisy media environment is configured to employ a dynamically reconfigurable QAM modulation scheme and adjust transmission characteristics in response to information received in order to modify performance of system components.Type: ApplicationFiled: August 20, 2018Publication date: December 13, 2018Inventors: Michael B. Propp, Khaled Saab, David L. Propp
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Patent number: 10057102Abstract: A modulation system is configured to employ a dynamically reconfigurable M-ary modulation scheme.Type: GrantFiled: October 5, 2015Date of Patent: August 21, 2018Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, Khaled Saab, David L. Propp
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Patent number: 8526418Abstract: A media access control (MAC) controller is disclosed for a network providing communication for network stations located at a plurality of customer premises and sharing a communication medium, each of the premises having a plurality of network stations. The MAC controller includes a virtual local area network (vLAN) controller, providing access to the communication medium for and communication among the stations located at a single customer's premises, to define a vLAN between them. A group local area network (gLAN) controller provides access to the communication medium for and communication among interfering vLANs, two vLANs being considered to be interfering when one can sense communications over the medium from a station in the other. A MAC controller is provided in at least one station in a vLAN.Type: GrantFiled: July 7, 2008Date of Patent: September 3, 2013Assignee: RPX CorporationInventors: Michael B. Propp, David L. Propp, Khaled Saab, Du Thi Do, John Jakson
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Patent number: 8198998Abstract: The location of a device on an electrical power line is identified using a power line characteristic, such as a power line impedance as a function of frequency, and/or a power line transfer function identified from the first device to a second device communicating with the first device over the electrical power line. Power line information is determined by receiving a signal from a first device, determining a power line transfer function based on the received signal, and determining power line information based on the determined power line transfer function.Type: GrantFiled: January 23, 2009Date of Patent: June 12, 2012Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp, Khaled Saab, Donald Orrell
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Publication number: 20080317070Abstract: A media access control (MAC) controller is disclosed for a network providing communication for network stations located at a plurality of customer premises and sharing a communication medium, each of the premises having a plurality of network stations. The MAC controller includes a virtual local area network (vLAN) controller, providing access to the communication medium for and communication among the stations located at a single customer's premises, to define a vLAN between them. A group local area network (gLAN) controller provides access to the communication medium for and communication among interfering vLANs, two vLANs being considered to be interfering when one can sense communications over the medium from a station in the other. A MAC controller is provided in at least one station in a vLAN.Type: ApplicationFiled: July 7, 2008Publication date: December 25, 2008Applicant: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp, Khaled Saab, Du Thi Do, John Jakson
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Patent number: 7406094Abstract: A media access control (MAC) controller is disclosed for a network providing communication for network stations located at a plurality of customer premises and sharing a communication medium, each of the premises having a plurality of network stations. The MAC controller includes a virtual local area network (vLAN) controller, providing access to the communication medium for and communication among the stations located at a single customer's premises, to define a vLAN between them. A group local area network (gLAN) controller provides access to the communication medium for and communication among interfering vLANs, two vLANs being considered to be interfering when one can sense communications over the medium from a station in the other. A MAC controller is provided in at least one station in a vLAN.Type: GrantFiled: April 17, 2001Date of Patent: July 29, 2008Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp, Khaled Saab, Du Thi Do, John Jakson
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Publication number: 20040075535Abstract: A media access control (MAC) controller is disclosed for a network providing communication for network stations located at a plurality of customer premises and sharing a communication medium, each of the premises having a plurality of network stations. The MAC controller includes a virtual local area network (vLAN) controller, providing access to the communication medium for and communication among the stations located at a single customer's premises, to define a vLAN between them. A group local area network (gLAN) controller provides access to the communication medium for and communication among interfering vLANs, two vLANs being considered to be interfering when one can sense communications over the medium from a station in the other. A MAC controller is provided in at least one station in a vLAN.Type: ApplicationFiled: November 18, 2003Publication date: April 22, 2004Inventors: Michael B Propp, David L Propp, Khaled Saab, Du Thi Do, John Jakson
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Patent number: 5944842Abstract: A novel apparatus and method are provided for data communication over noisy media. The apparatus includes one or both of a transmitter circuit located at a transmitting location and a receiver circuit located at a receiving location. The data is encoded to provide error correction capabilities. The encoded signal is further modified by performing one or more linear mathematical operations in order to further randomize the data signal. The transmitter circuit thus generates a wideband spread spectrum signal based on the data which is to be transmitted, which spreads the signal and improves its immunity to noise. The coding used to spread the data signal may or may not be a function of the data itself. The present invention provides enhanced noise immunity without any resulting degradation in the operation and efficiency of the error correction coding.Type: GrantFiled: June 17, 1997Date of Patent: August 31, 1999Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp
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Patent number: 5872791Abstract: A novel apparatus and method are provided for data communication over noisy media. The apparatus includes one or both of a transmitter circuit located at a transmitting location and a receiver circuit located at a receiving location. The data is encoded to provide error correction capabilities. The encoded signal is further modified by performing one or more linear mathematical operations in order to further randomize the data signal. The transmitter circuit thus generates a wideband spread spectrum signal based on the data which is to be transmitted, which spreads the signal and improves its immunity to noise. The coding used to spread the data signal may or may not be a function of the data itself. The present invention provides enhanced noise immunity without any resulting degradation in the operation and efficiency of the error correction coding.Type: GrantFiled: June 17, 1997Date of Patent: February 16, 1999Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp
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Patent number: 5774526Abstract: The present invention is for a system which uses a non-telephone wiring network, such as the existing electrical low voltage wiring of the power line distribution network to provide telephone line service to individual users. The low voltage wiring referred to herein is that used to distribute power to individual businesses and residences, e.g., 120 V single phase residential service. The telephone line service is "on-demand" in the sense that any user can interface a telephone, or other communications device, to the electrical wiring and thereby instantly obtain telephone line service. The system of the present invention may be used to provide primary telephone service to those users who do not wish to pay the expense for dedicated line service. Alternatively, the system of the present invention may be used to provide secondary telephone service, i.e., second, third, . . . line, telephone service for those users who do not wish to pay the expense for dedicated secondary line service.Type: GrantFiled: July 17, 1996Date of Patent: June 30, 1998Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp, Christopher P. Ladas
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Patent number: 5727004Abstract: A novel apparatus and method are provided for data communication over noisy media. The apparatus includes one or both of a transmitter circuit located at a transmitting location and a receiver circuit located at a receiving location. The data is encoded to provide error correction capabilities. The encoded signal is further modified by performing one or more linear mathematical operations in order to further randomize the data signal. The transmitter circuit thus generates a wideband spread spectrum signal based on the data which is to be transmitted, which spreads the signal and improves its immunity to noise. The coding used to spread the data signal may or may not be a function of the data itself. The present invention provides enhanced noise immunity without any resulting degradation in the operation and efficiency of the error correction coding.Type: GrantFiled: March 14, 1995Date of Patent: March 10, 1998Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp
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Patent number: 4815106Abstract: A power line communication system specially designed for use in local area network (LAN) configurations has receiver and transmitter sections for fast, highly reliable data communication. The receiver includes controlled adaptive second order filters for ensuring data reception in virtually any signal environment having noise and distortion characteristics, especially alternating current (AC) power lines. A wideband phase shift-keyed (PSK) carrier is impressed on the transmission medium, the carrier having power spread approximately uniformly across a useful frequency bandwidth. A transmitter section is arranged for adaptive feedback control of the transmitted signal power, so as to prevent possible damage to the transmitter when the transmission medium impedance is low. A logic control circuit provides a correlation count of a received signal in comparison with a known reference signal in order to effectively achieve phase synchronization between the receiver and transmitter.Type: GrantFiled: April 16, 1986Date of Patent: March 21, 1989Assignee: Adaptive Networks, Inc.Inventors: Michael B. Propp, David L. Propp