Patents by Inventor Kazutaka Ohta

Kazutaka Ohta 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).

  • Route searching device
    Patent number: 6438490
    Abstract: A processor calculates an estimated travel time required to travel from a current point to a destination or a passing point on a route on the basis of a travel time represented by traffic-jam information for a traffic-jam place which is represented by the traffic-jam information received by a traffic information receiver, and on the basis of a traffic-jam time calculated on the basis of map data for the other places; accordingly, the travel time required can be calculated in consideration of traffic-jam conditions.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: August 20, 2002
    Assignee: Xanavi Informatics Corporation
    Inventor: Kazutaka Ohta
  • ROUTE SEARCHING DEVICE
    Publication number: 20010047242
    Abstract: A processor calculates an estimated travel time required to travel from a current point to a destination or a passing point on a route on the basis of a travel time represented by traffic-jam information for a traffic-jam place which is represented by the traffic-jam information received by a traffic information receiver, and on the basis of a traffic-jam time calculated on the basis of map data for the other places; accordingly, the travel time required can be calculated in consideration of traffic-jam conditions.
    Type: Application
    Filed: April 27, 1999
    Publication date: November 29, 2001
    Inventor: KAZUTAKA OHTA