Patents by Inventor Alistair Malcolm Macdonald

Alistair Malcolm Macdonald 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).

  • Digital subscriber line diagnostic system
    Patent number: 7782933
    Abstract: A communication device transmits very low frequency signals in order to help diagnose the cause of a communication problem in a DSL communication system. The communication problem may be, for example, the inability of a remote data transceiver unit (DTU-R) to successfully train-up with a central data transceiver unit (DTU-C). The very low frequency signals may be used to communicate the status or settings of the remote transceiver unit to the DTU-C, to download settings parameters or executable code to the DTU-R, or to coordinate the transmission of testing signals.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: August 24, 2010
    Inventors: Alistair Malcolm MacDonald, Joseph Q. Chapman
  • Digital subscriber line diagnostic system
    Patent number: 7106834
    Abstract: A communication device transmits very low frequency signals in order to help diagnose the cause of a communication problem in a DSL communication system. The communication problem may be, for example, the inability of a remote data transceiver unit (DTU-R) to successfully train-up with a central data transceiver unit (DTU-C). The very low frequency signals may be used to communicate the status or settings of the remote transceiver unit to the DTU-C, to download settings parameters or executable code to the DTU-R, or to coordinate the transmission of testing signals.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: September 12, 2006
    Assignee: Paradyne Corporation
    Inventors: Alistair Malcolm Macdonald, Joseph Q. Chapman
  • Digital subscriber line diagnostic system
    Publication number: 20030190016
    Abstract: A communication device transmits very low frequency signals in order to help diagnose the cause of a communication problem in a DS L communication system. The communication problem may be, for example, the inability of a remote data transceiver unit (DTU-R) to successfully train-up with a central data transceiver unit (DTU-C). The very low frequency signals may be used to communicate the status or settings of the remote transceiver unit to the DTU-C, to download settings parameters or executable code to the DTU-R, or to coordinate the transmission of testing signals.
    Type: Application
    Filed: April 8, 2003
    Publication date: October 9, 2003
    Inventors: Alistair Malcolm MacDonald, Joseph Q. Chapman
  • Digital subscriber line diagnostic system
    Patent number: 6574308
    Abstract: A communication device transmits very low frequency signals in order to help diagnose the cause of a communication problem in a DSL communication system. The communication problem may be, for example, the inability of a remote data transceiver unit (DTU-R) to successfully train-up with a central data transceiver unit (DTU-C). The very low frequency signals may be used to communicate the status or settings of the remote transceiver unit to the DTU-C, to download settings parameters or executable code to the DTU-R, or to coordinate the transmission of testing signals.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: June 3, 2003
    Assignee: Paradyne Corporation
    Inventors: Alistair Malcolm Macdonald, Joseph Q. Chapman
  • System and method for implementing V.90 central site modem functionality at a customer premises
    Patent number: 6424675
    Abstract: A system and method for communication allows a V.90 modem located at a customer premises to appear as a “central site” modem to a V.90 “end-point” modem located remotely from the customer premises “central site” V.90 modem. The customer premises includes a communication device that provides a four wire digital connection to the customer premises V.90 modem co-located with the communication device at the customer premises. Because the V.90 modem located at the customer premises has a four wire digital connection to a public switched network, it appears to a remote “end-point” V.90 modem that the customer premises V.90 modem is a “central site” modem.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: July 23, 2002
    Assignee: Paradyne Corporation
    Inventors: Alistair Malcolm Macdonald, Keith R. Nauman