Patents by Inventor Michael R. Mannette

Michael R. Mannette 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).

  • Clock synchronization of HFC telephone equipment
    Patent number: 6975652
    Abstract: A method and system for synchronizing two clocks of a first and second device. Successive synchronization messages are sent from the first device to the second device. Each synchronization message has a timestamp. Each message is received at the second device and the period between successive timestamps is determined. The period of the second clock of the second device is also determined. The period between timestamps is compared with the period of the second clock of the second device. The period of said second clock is adjusted based upon the comparison.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: December 13, 2005
    Assignee: 3Com Corporation
    Inventors: Michael R. Mannette, Douglas J. Newlin
  • Apparatus, method and system for multimedia access network channel management
    Patent number: 6816500
    Abstract: An apparatus, method and system are provided for multimedia access network channel management, such as channel management in a hybrid fiber-coaxial cable network, for voice (telephony), video, fax and data transmission. The preferred system embodiment includes a plurality of cable telephony modems (CTMs), for such voice (telephony), video, fax and data transmission, and includes a cable modem termination system (CMTS). For upstream communication from the CTMs to the CMTS, the network provides a plurality of channels, formed by a combination of FDM and TDMA. When a CMTS receives an multimedia network access message having a comparative priority from a CTM, the CMTS determines whether there is a first channel which is available from the plurality of channels, and if so, assigns a first transmission corresponding to the multimedia network access message to the first channel.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: November 9, 2004
    Assignee: 3Com Corporation
    Inventors: Michael R. Mannette, Douglas J. Newlin, Kurt W. Steinbrenner
  • Automatic timing adjustment for diverse routing of HFC systems
    Patent number: 6275468
    Abstract: A telephony system having automatic timing adjustment for diverse routing of HFC systems has a signal stream routing through a signal line loop between a head-end and at least one communication unit. If a fault occurs within the signal line loop, recognized by the head-end when a short uplink burst from the communication unit does not align within a predetermined timing window, the head-end will cycle through predetermined delay parameters corresponding to various alternate signal line loops made up of redundant signal lines. Once the predetermined delay parameter corresponding to the current alternate signal line loop is determined, normal operation of the system resumes.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: August 14, 2001
    Assignee: Motorola, Inc.
    Inventors: Timothy M. Burke, Kurt Steinbrenner, Michael R. Mannette
  • Method for updating a software code in a communication system
    Patent number: 5761504
    Abstract: A method of updating a software code in a cable communication system (10) involves the steps of receiving a notification (100) by a cable access unit (30). Next, the cable access unit (30) receives (110) the software code. After receiving (110) the software code the CAU (30) resets (114) and reboots using the software code.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: June 2, 1998
    Assignee: Motorola, Inc.
    Inventors: Richard J. Corrigan, Michael R. Mannette, Hang Chan, Naveen Grover