Patents by Inventor Ko Itoh

Ko Itoh 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).

  • Traffic flow change monitoring system
    Patent number: 5281964
    Abstract: A traffic flow change monitoring system is disclosed, which uses data obtained from a vehicle perceiving sensor placed on a road and which can detect a traffic congestion or an unexpected event. Since a change in traffic flow is monitored on the basis of the speeds or the like of individual vehicles and the distances between successive vehicles, it is possible to monitor a positional relationship between successively running vehicles Also, it is possible to make a prompt detection of an unexpected event such as an accident by detecting a change in relative vehicle speed difference between traffic lanes at each measurement spot.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: January 25, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideaki Iida, Joji Kamata, Ko Itoh, Masahiro Kojima