Patents by Inventor Paul E. Janos

Paul E. Janos 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).

  • Trip recorder operation and memory retention extension through multiple battery backup and a load shedding strategy triggered by a primary power interruption
    Patent number: 5191529
    Abstract: A dual battery backup system which provides power to selected portions of a trip recorder according to a load shedding strategy to maximize duration of operation and data retention in the event of interruption of primary power supply. The trip recorder is divided into three subsystems; a central processing unit, input/output and memory/clock subsystems. In the event of interruption of power from the vehicle battery, backup power is supplied to all systems according to a load shedding strategy. Power supplied to the input/output subsystem and the central processing unit are interrupted after the passage of predetermined amounts of time. The memory subsystem receives power after all other subsystems have been shed enabling memory retention for a period of up to ten years.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: March 2, 1993
    Assignee: Rockwell International Corporation
    Inventors: Reno V. Ramsey, Paul E. Janos