Patents by Inventor John W. Brickell
John W. Brickell 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: 8363679Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of Ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each has guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. As a local network, the architecture supports guaranteed bandwidth for delivery of data flows to a plurality of host devices.Type: GrantFiled: April 13, 2009Date of Patent: January 29, 2013Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie, Jr., Lamar E. West, Jr.
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Patent number: 7933288Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator.Type: GrantFiled: December 11, 2007Date of Patent: April 26, 2011Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie, Jr., Lamar E. West, Jr.
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Patent number: 7801119Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator.Type: GrantFiled: December 11, 2007Date of Patent: September 21, 2010Assignee: Scientific-Atlanta, LLCInventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie, Jr., Lamar E. West, Jr.
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Publication number: 20090196205Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator.Type: ApplicationFiled: April 13, 2009Publication date: August 6, 2009Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie, JR., Lamar E. West, JR.
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Patent number: 7519081Abstract: Disclosed herein are methods of providing a client with local area network connectivity and access to other services in a cable network. One such method includes: allocating bandwidth in the network to support bi-directional data communication between the host and a central concentrator. Bandwidth is allocated for a downstream flow on at least one downstream frequency channel based on a mapping between the downstream flow and a particular octet in a downstream packet. Bandwidth is allocated for an upstream flow on at least one non-shared upstream tone. The method also includes conveying a bi-directional data flow between the host and the concentrator over the allocated bandwidth, including conveying the upstream flow using the allocated bandwidth and conveying the downstream flow using the allocated bandwidth. The method also includes utilizing bandwidth in the network not allocated to data communications to provide the host with at least one audio/visual service.Type: GrantFiled: September 17, 2002Date of Patent: April 14, 2009Assignee: Cisco Technology, Inc.Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie, Jr., Lamar E. West, Jr.
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Patent number: 7336680Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator.Type: GrantFiled: September 17, 2002Date of Patent: February 26, 2008Assignee: Scientific-Atlanta, Inc.Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie, Jr., Lamar E. West, Jr.
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Patent number: 6769133Abstract: A communication system (100) processes forward signals generated by headend equipment (105) and reverse signals generated by subscriber equipment (135). A communication medium (110, 120), such as fiber optic cable or coaxial cable, connects the headend equipment (105) and the subscriber equipment (135), and amplifiers (400) are positioned at various locations along the medium (110, 120) to amplify the forward and reverse signals. The amplifiers (400) include a dual forward/reverse test circuit (FIG. 6) having a forward test point (406) coupled to the forward signal, a reverse test point (408) coupled to the reverse signal, and a single directional coupler (404) connected to the forward test point (406), for providing the forward signal thereto, and to the reverse test point (408), for providing the reverse signal thereto.Type: GrantFiled: October 12, 1999Date of Patent: July 27, 2004Assignee: Scientific-Atlanta, Inc.Inventors: Steven E. Blashewski, John W. Brickell
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Publication number: 20030058885Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator.Type: ApplicationFiled: September 17, 2002Publication date: March 27, 2003Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie,, Lamar E. West,
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Publication number: 20030053484Abstract: An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator.Type: ApplicationFiled: September 17, 2002Publication date: March 20, 2003Inventors: Donald C. Sorenson, Jiening Ao, Steven E. Blashewski, John W. Brickell, Florin Farcas, Richard J. Futch, Joseph Graham Mobley, John A. Ritchie,, Lamar E. West,
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Patent number: 6530088Abstract: An apparatus for indicating the configuration of a cable television line amplifier. The line amplifier contains a controller that senses a preset voltage on a status indication line. When the amplifier is reconfigured, such as by adding new circuits containing new functions or features, these new circuits contain resisters that are shunted to modify the preset voltage level on the appropriate status indication line. The controller senses the modified voltages and provides an indication of the new function of the new circuit to a headend through a cable television distribution system.Type: GrantFiled: February 11, 1999Date of Patent: March 4, 2003Assignee: Scientific-Atlanta, Inc.Inventors: John W. Brickell, Wayne H. Nash
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Patent number: 6285253Abstract: Voltage-induced hum modulation in an amplifier can be caused when shunt capacitors begin to saturate and enter their non-linear region of operation. Bypass coils within the amplifier are magnetically coupled to the shunt capacitors and exacerbate hum modulation by coupling additional energy to the shunt capacitors. By introducing a resistance (R) in series with the shunt capacitors (C), energy that would normally be stored in the shunt capacitors (C) is dissipated. As a result, the shunt capacitors (C) remain in their linear region of operation more often and present a more stable impedance. The resistor (R) is especially beneficial at reducing hum modulation at the resonant frequency of the shunt capacitors (C), when the transfer of energy from the bypass coils (L) is at a maximum.Type: GrantFiled: December 28, 1999Date of Patent: September 4, 2001Assignee: Scientific-Atlanta, Inc.Inventors: Jiening Ao, Steven E. Blashewski, John W. Brickell, Pieter G. Ibelings
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Patent number: 6198498Abstract: A communication system (100) processes forward signals generated by headend equipment (105) and reverse signals generated by subscriber equipment (135). A communication medium (110, 120), such as fiber optic cable or coaxial cable, couples the headend equipment (105) and the subscriber equipment (135), and amplifiers (400) are positioned at various locations along the medium (110, 120) to amplify the forward and reverse signals. The amplifiers (400) include a dual forward/reverse test circuit (FIG. 5) having a forward test point (406) coupled to the forward signal, a reverse test point (408) coupled to the reverse signal, and a single directional coupler (404) connected to the forward test point (406), for providing the forward signal thereto, and to the reverse test point (408), for providing the reverse signal thereto.Type: GrantFiled: October 13, 1998Date of Patent: March 6, 2001Assignee: Scientific-Atlanta, Inc.Inventor: John W. Brickell
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Patent number: 5770974Abstract: The present invention solves the gain, noise figure, and distortion problems of prior art thermal compensation circuits by incorporating a temperature-compensating circuit in the feedback loop of a transistor amplifier arrangement. Using this method, the insertion loss is reduced as the gain of the amplifier varies proportionately to the temperature. This method has a negligible effect on the noise figure and distortion, and the incremental cost is much lower than the conventional circuits. Furthermore, the present invention can be used in both single-ended or push-pull dual amplifier configurations.Type: GrantFiled: June 3, 1996Date of Patent: June 23, 1998Assignee: Scientific-Atlanta, Inc.Inventors: Stephan W. Vogt, John W. Brickell, Alfredo Acosta
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Patent number: 5554993Abstract: A global position determining system conserves battery power in a battery powered user terminal by transmitting its approximate position initially and then inhibiting transmission of a homing beacon until a homing terminal is in the vicinity of the user terminal. After user activation, the user terminal determines its own approximate position and transmits an approximate position signal to a satellite. The satellite then relays the approximate position signal to a mobile homing terminal. After moving the mobile homing terminal toward the approximate position, an activate homing beacon command is transmitted to the user terminal. When the transmitted command is received, the homing beacon is activated. Upon activation of the homing beacon, a directional antenna of the mobile homing terminal can be oriented toward a first direction which has a strong homing beacon reception relative to other directions and moved towards that direction.Type: GrantFiled: January 4, 1994Date of Patent: September 10, 1996Assignee: Panasonic Technologies, Inc.Inventor: John W. Brickell