Patents by Inventor Masaki Motoyama

Masaki Motoyama 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).

  • Patent number: 8532925
    Abstract: A method and apparatus efficiently assigns the spatial index numbers to map cells that divide an area which is a unit of administrative region into a plurality of small units. The method includes the steps of: establishing a plurality of map cells that divide an administrative region expressed by XML map data which is configured in a multiple-layered structure; determining a layer in the XML map data on which the map cells are established; selecting a type of tracing curve for sequentially indexing the plurality of map cells; assigning index numbers consecutively to the map cells with the sequence of the tracing curve; and repeating foregoing steps for all of the map cells in all of the layers of the XML map data, thereby creating a map database in the XML format with the spatial indexes for all of the map cells.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: September 10, 2013
    Assignee: Alpine Electronics, Inc.
    Inventor: Masaki Motoyama
  • Patent number: 8150620
    Abstract: A route search method for a navigation system using the XML map data that is layered based on administrative regions improves efficiency and accuracy of finding an optimum route. The method includes the steps of establishing boundary nodes on boundaries of administrative regions, creating cost information on virtual links that connect the boundary nodes on the administrative regions and physical links on a base layer, selecting candidate virtual links regions by evaluating the cost information, detecting candidate total routes between the start point and destination by connecting the candidate virtual links and other routes, and applying physical links in the base layer to the candidate total routes for further evaluating the costs of the total routes to select the most cost effective total route.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: April 3, 2012
    Assignee: Alpine Electronics, Inc.
    Inventor: Masaki Motoyama
  • Publication number: 20100287207
    Abstract: A method and apparatus efficiently assigns the spatial index numbers to map cells that divide an area which is a unit of administrative region into a plurality of small units. The method includes the steps of: establishing a plurality of map cells that divide an administrative region expressed by XML map data which is configured in a multiple-layered structure; determining a layer in the XML map data on which the map cells are established; selecting a type of tracing curve for sequentially indexing the plurality of map cells; assigning index numbers consecutively to the map cells with the sequence of the tracing curve; and repeating foregoing steps for all of the map cells in all of the layers of the XML map data, thereby creating a map database in the XML format with the spatial indexes for all of the map cells.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 11, 2010
    Inventor: Masaki Motoyama
  • Publication number: 20100262359
    Abstract: A route search method for a navigation system using the XML map data that is layered based on administrative regions improves efficiency and accuracy of finding an optimum route. The method includes the steps of establishing boundary nodes on boundaries of administrative regions, creating cost information on virtual links that connect the boundary nodes on the administrative regions and physical links on a base layer, selecting candidate virtual links regions by evaluating the cost information, detecting candidate total routes between the start point and destination by connecting the candidate virtual links and other routes, and applying physical links in the base layer to the candidate total routes for further evaluating the costs of the total routes to select the most cost effective total route.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 14, 2010
    Inventor: Masaki Motoyama
  • Patent number: 7542846
    Abstract: A navigation system uses XML/SVG format map data for achieving flexibility in modifying the map data. A method of converting geographic data into the XML/SVG format map data includes the steps of retrieving the geographic data, analyzing the retrieved geographic data for its data elements structure, data type and semantics, and converting the analyzed data to the XML/SVG format map data for use with the navigation system. The XML/SVG format map data is constructed in a layered structure created based on administrative regions such as states, counties and cities. The XML/SVG format map data can be delivered to a remote user as a unit of administrative region through a communication network.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: June 2, 2009
    Assignees: Alpine Electronics, Inc., Skill Sets Alliance, Inc.
    Inventors: Masaki Motoyama, Hirohisa Yamaguchi
  • Publication number: 20070185651
    Abstract: A navigation system uses XML/SVG format map data for achieving flexibility in modifying the map data. A method of converting geographic data into the XML/SVG format map data includes the steps of retrieving the geographic data, analyzing the retrieved geographic data for its data elements structure, data type and semantics, and converting the analyzed data to the XML/SVG format map data for with the navigation system. The XML/SVG format map data is constructed in a layered structure created based on administrative regions such as states, counties and cities. The XML/SVG format map data can be delivered to a remote user as a unit of administrative region through a communication network.
    Type: Application
    Filed: February 7, 2006
    Publication date: August 9, 2007
    Inventors: Masaki Motoyama, Hirohisa Yamaguchi