Patents by Inventor Enjian Yao

Enjian Yao 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 search system, route search terminal and route search method
    Patent number: 8160810
    Abstract: The route search system of the present invention receives the provision request of the information about route search from a route search terminal. The information included in the provision request from a route search terminal is acquired, calculation processing of the environmental load value of the relevant vehicle and the environmental load value of other vehicle by which it is generated with movement of a relevant vehicle from the acquired information is carried out using an environmental load calculation unit.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: April 17, 2012
    Assignee: NEC Soft, Ltd.
    Inventors: Takayuki Morikawa, Toshiyuki Yamamoto, Tomio Miwa, Akinori Satou, Enjian Yao, Yasuhiro Sugisaki
  • Link setting system suitable for map matching, method and program thereof
    Patent number: 7962282
    Abstract: In order to eliminate erroneous map matching, when a link is set on a road, the direction and distance the link is displaced are calculated in accordance with the width of the road and the width of a road paralleled to the road, or the positional relationship of both roads in road network.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: June 14, 2011
    Assignee: NEC Corporation
    Inventors: Takashi Fujita, Enjian Yao
  • ROUTE SEARCH SYSTEM, ROUTE SEARCH TERMINAL AND ROUTE SEARCH METHOD
    Publication number: 20090164114
    Abstract: The route search system of the present invention receives the provision request of the information about route search from a route search terminal. The information included in the provision request from a route search terminal is acquired, calculation processing of the environmental load value of the relevant vehicle and the environmental load value of other vehicle by which it is generated with movement of a relevant vehicle from the acquired information is carried out using an environmental load calculation unit.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 25, 2009
    Applicants: NEC CORPORATION, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, NEC SOFT, LTD.
    Inventors: Takayuki MORIKAWA, Toshiyuki Yamamoto, Tomio Miwa, Akinori Satou, Enjian Yao, Yasuhiro Sugisaki
  • AUTOMATIC UPDATE SYSTEM, AUTOMATIC UPDATING METHOD, AND PROGRAM THEREFOR
    Publication number: 20080077315
    Abstract: An automatic update system is provided that is capable of constantly maintaining a current historical database with high accuracy status by automatically updating the historical database. The automatic update system includes: a raw data saving unit for obtaining position information of a vehicle and saving the information in a raw data storage unit; a data conversion unit for calculating a link travel time of the vehicle and saving the link travel time of the vehicle in an intermediate result storage unit; and an historical database update unit for checking a number of data of the link travel time saved in the intermediate result storage unit, calculating the average value of the link travel time when the number is equal to or higher than a predetermined number of data for generating a reliable database, and updating an historical database using the average value.
    Type: Application
    Filed: November 13, 2007
    Publication date: March 27, 2008
    Applicant: NEC CORPORATION
    Inventor: Enjian Yao
  • LINK SETTING SYSTEM SUITABLE FOR MAP MATCHING, METHOD AND PROGRAM THEREOF
    Publication number: 20080004804
    Abstract: In order to eliminate erroneous map matching, when a link is set on a road, the direction and distance the link is displaced are calculated in accordance with the width of the road and the width of a road paralleled to the road, or the positional relationship of both roads in road network.
    Type: Application
    Filed: June 19, 2007
    Publication date: January 3, 2008
    Applicant: NEC CORPORATION
    Inventors: Takashi Fujita, Enjian Yao