Patents by Inventor John Limb

John Limb 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: 8654775
    Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: February 18, 2014
    Assignee: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Publication number: 20110170507
    Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Applicant: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Patent number: 7912066
    Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: March 22, 2011
    Assignee: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Patent number: 7733912
    Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: June 8, 2010
    Assignee: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Patent number: 7697543
    Abstract: A multi-source data multiplexing system that accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically comprising a transmission time on a data channel, and inserts a information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: April 13, 2010
    Assignee: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Publication number: 20070297436
    Abstract: A system and method is provided for scheduling transmissions from a plurality of services operating over a widely distributed communications network. A headend communications device (such as a cable modem termination system) arbitrates bandwidth among a plurality of cable modems configurable for bidirectional communications. The headend grants a bandwidth region to a specified cable modem or assigns contention regions for a group of cable modems. Each cable modem contains a local scheduler that sends requests for bandwidth according to local policies or rules. Upon receipt of a grant from the headend, the local scheduler selects packets to be transmitted to best serve the needs of the services associated with the cable modem. Accordingly, a service requesting bandwidth may not be the service utilizing the grant corresponding to bandwidth request.
    Type: Application
    Filed: August 28, 2007
    Publication date: December 27, 2007
    Applicant: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra Gummalla, John Limb, Richard Protus
  • Publication number: 20070242692
    Abstract: A wireless communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The wireless communication system includes a first group of one or more subscriber stations that interface with a base station in accordance with a first protocol and a second group of one or more subscriber stations that interface with the base station in accordance with a second protocol. The base station includes a protocol processor that identifies transmissions from the first and second groups of subscriber stations and routes transmissions from the first group of subscriber stations to a first processor operating in accordance with the first protocol and routes transmissions from the second group of subscriber stations to a second processor operating in accordance with the second protocol.
    Type: Application
    Filed: May 8, 2007
    Publication date: October 18, 2007
    Applicant: Broadcom Corporation
    Inventors: John Limb, Dolors Sala, Ajay Chandra Gummalla, Fred Bunn
  • Publication number: 20070242673
    Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Application
    Filed: June 12, 2007
    Publication date: October 18, 2007
    Applicant: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Publication number: 20070242693
    Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Application
    Filed: June 12, 2007
    Publication date: October 18, 2007
    Applicant: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Publication number: 20070242687
    Abstract: A wireless communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The wireless communication system includes a first group of one or more subscriber stations that interface with a base station in accordance with a first protocol and a second group of one or more subscriber stations that interface with the base station in accordance with a second protocol. The base station includes a protocol processor that identifies transmissions from the first and second groups of subscriber stations and routes transmissions from the first group of subscriber stations to a first processor operating in accordance with the first protocol and routes transmissions from the second group of subscriber stations to a second processor operating in accordance with the second protocol.
    Type: Application
    Filed: May 8, 2007
    Publication date: October 18, 2007
    Applicant: Broadcom Corporation
    Inventors: John Limb, Dolors Sala, Ajay Chandra Gummalla, Fred Bunn
  • Publication number: 20070076717
    Abstract: A two way communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The communication system includes a first group of one or more remote devices that interface with a local host in accordance with a first protocol and a second group of one or more remote devices that interface with the local host in accordance with a second protocol. The local host includes a protocol processor that identifies transmissions from the first and second groups of remote devices and routes transmissions from the first group of remote devices to a first processor operating in accordance with the first protocol and also routes transmissions from the second group of remote devices to a second processor operating in accordance with the second protocol.
    Type: Application
    Filed: October 31, 2006
    Publication date: April 5, 2007
    Applicant: Broadcom Corporation
    Inventors: John Limb, Dolors Sala, Ajay Chandra Gummalla, Fred Bunn
  • Publication number: 20060159094
    Abstract: A point-to-multipoint network interface is provided that is simpler and less costly to implement than conventional Ethernet switches. The interface includes a plurality of downstream transmitters for transmitting data packets to a plurality of end user devices, a plurality of downstream receivers for receiving data packets from the plurality of end user devices, an upstream transmitter and an upstream receiver. A multiplexer within the interface multiplexes data packets received from the end user devices into a stream of data packets for transmission to a higher level node regardless of the destination address of the data packets. Conversely, a demultiplexer within the interface demultiplexes a stream of data packets received from the higher level node into individual data packets for selective transmission to one of the plurality of end user devices. The interface can support asymmetrical transmission rates on the upstream and downstream channels between the interface and the end user devices.
    Type: Application
    Filed: March 23, 2006
    Publication date: July 20, 2006
    Applicant: Broadcom Corporation
    Inventors: Ajay Chandra Gummalla, John Limb
  • Publication number: 20050008027
    Abstract: A multi-source data multiplexing system that accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically comprising a transmission time on a data channel, and inserts a information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Application
    Filed: August 4, 2004
    Publication date: January 13, 2005
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
  • Patent number: 6804251
    Abstract: A multi-source data multiplexing system that accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically comprising a transmission time on a data channel, and inserts a information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: October 12, 2004
    Assignee: Broadcom Corporation
    Inventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus, Ajay Chandra V. Gummalla