Patents Assigned to Utics Corporation
  • Adaptive time-division multiplexing communications protocol method and system
    Patent number: 5687175
    Abstract: A system and method for an adaptive time-division multiplexing communications protocol for collecting data from remote sensors equipped with RF transceivers using an RF transceiver equipped mobile data collection unit. RF transceivers interfaced to remote sensors actively monitor a predetermined RF transmission frequency to ascertain the presence of a signal transmitted by the mobile unit. All remote units detecting the RF signal listen for a message from the mobile unit requesting transmission of their unique identifier, i.e., their ID. This message contains the Time Division Base (TDB) specifying the number of time slots allocated for transmission of remote sensor IDs to the mobile unit. Using the TDB, each remote sensor randomly selects a time slot and transmits its ID to the mobile unit. Unique IDs of remote sensors received by the mobile unit are used to individually poll each sensor for data packet transmission.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: November 11, 1997
    Assignee: Utics Corporation
    Inventors: Virgil Maurice Rochester, Jr., Ariel Mark Hunt, Charles Stephen Jonson, John D. Weaver
  • Adaptive time-division multiplexing communications protocol method and system
    Patent number: 5621735
    Abstract: A system and method for an adaptive time-division multiplexing communications protocol for collecting data from remote sensors equipped with RF transceivers using an RF transceiver equipped mobile data collection unit. RF transceivers interfaced to remote sensors actively monitor a predetermined RF transmission frequency to ascertain the presence of a signal transmitted by the mobile unit. All remote units detecting the RF signal listen for a message from the mobile unit requesting transmission of their unique identifier, i.e., their ID. This message contains the Time Division Base (TDB) specifying the number of time slots allocated for transmission of remote sensor IDs to the mobile unit. Using the TDB, each remote sensor randomly selects a time slot and transmits its ID to the mobile unit. Unique IDs of remote sensors received by the mobile unit are used to individually poll each sensor for data packet transmission.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: April 15, 1997
    Assignee: Utics Corporation
    Inventors: Virgil M. Rochester, Jr., Ariel M. Hunt, Charles S. Jonson, John D. Weaver