Patents by Inventor Masayuki Mieno

Masayuki Mieno 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).

  • Global positioning system (GPS) and GPS receiver
    Patent number: 6463386
    Abstract: To enable positional information to be provided even if a signal intensity of a received GPS signal is low by compensating a phase inversion of a navigation message and performing a phase integration over a long period. A base station 20 continuously receives the GPS signal 11 and extracts therefrom information for supporting reception and positioning computation in a GPS receiver 30 and retains the information. The base station 20 transmits the support information to the GPS receiver 30 via a communication line 40 when the GPS receiver needs the information. The base station 20 supports reception time synchronization in the GPS receiver 30. The GPS receiver 30 receives the GPS signal 11, generates an intermediate frequency signal through down-conversion, and then stores an A/D conversion data in a memory unit.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: October 8, 2002
    Assignee: NEC Corporation
    Inventors: Masayuki Mieno, Tsunekazu Kimura
  • Global positioning system (GPS) and GPS receiver
    Publication number: 20020077751
    Abstract: To enable positional information to be provided even if a signal intensity of a received GPS signal is low by compensating a phase inversion of a navigation message and performing a phase integration over a long period. A base station 20 continuously receives the GPS signal 11 and extracts therefrom information for supporting reception and positioning computation in a GPS receiver 30 and retains the information. The base station 20 transmits the support information to the GPS receiver 30 via a communication line 40 when the GPS receiver needs the information. The base station 20 supports reception time synchronization in the GPS receiver 30. The GPS receiver 30 receives the GPS signal 11, generates an intermediate frequency signal through down-conversion, and then stores an A/D conversion data in a memory unit.
    Type: Application
    Filed: December 5, 2001
    Publication date: June 20, 2002
    Applicant: NEC Corporation
    Inventors: Masayuki Mieno, Tsunekazu Kimura