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公开(公告)号：US20180239029A1
公开(公告)日：2018-08-23
申请号：US15524454
申请日：2016-01-26
Inventor： Jun SHIBATA , Toru OKADA , Katsunao TAKAHASHI , Kunihiko SAKAIBARA
IPC: G01S19/44
CPC classification number: G01S19/44
Abstract: The present disclosure is effective in easily estimating an integer value bias at a high speed. A processor of a positioning system, a positioning method, and a positioning station performs interference positioning through calculation processing based on positioning data of the base station and positioning data of the positioning station. A plurality of calculation processing items are performed in parallel with different time points as start time points. Thus, even in a case where a situation in which the time required for the calculation of a fix solution differs depending on time point at which time point the calculation processing starts, there is a possibility that one of a plurality of calculation processing items can calculate the fix solution at an earlier time than in a case where single calculation processing performs the calculation. Therefore, it is possible to easily estimate the integer value bias at the high speed.
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Patent Agency Ranking
公开(公告)号：US20180011165A1
公开(公告)日：2018-01-11
申请号：US15712664
申请日：2017-09-22
Inventor： Katsunao TAKAHASHI
Abstract: A navigation satellite system includes a transmitter that transmits a first radio wave having a predetermined frequency, and an electronic device that calculates position coordinates of the electronic device by using a second radio wave from a GNSS satellite, and obtains position coordinates of the transmitter. The electronic device includes a receiver that receives the first radio wave from the transmitter and the second radio wave from the GNSS satellite, and a controller that calculates a distance between the electronic device and the transmitter based on the received first radio wave, and calculates position coordinates of the electronic device based on the received second radio wave. The controller calculates, based on second radio wave received when the electronic device is present at each one of three or more points, respective position coordinates of the three or more points, and calculates respective distances between the electronic device and the transmitter when the electronic device is present at each one of the three or more points. The controller calculates the position coordinates of the transmitter based on the position coordinates of the three or more points and respective distances between each one of the three or more points and the transmitter.
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3.发明公开公开(公告)号：US20240094938A1
公开(公告)日：2024-03-21
申请号：US18519007
申请日：2023-11-26
Inventor： Katsunao TAKAHASHI , Kengo TSUZUKI , Masanori KITAMIKADO
IPC: G06F3/06
CPC classification number: G06F3/0652 , G06F3/0608 , G06F3/067
Abstract: An electronic apparatus includes a first storage device and a processor. The processor causes a server device to register the electronic apparatus by transmitting a first signal including identification information for identifying the first storage device, transmits, to the server device, a second signal including identification information of the first storage device and inquiring whether or not it is registered in the server device that data stored in the first storage device is to be erased, and erases the data stored in the first storage device when the electronic apparatus receives a third signal instructing erasure of the data stored in the first storage device. The third signal is transmitted when the identification information of the first storage device matches the identification information of the first storage device and it is registered in the server device that the data stored in the first storage device is to be erased.
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公开(公告)号：US20180321387A1
公开(公告)日：2018-11-08
申请号：US16027313
申请日：2018-07-04
Inventor： Katsunao TAKAHASHI , Masaharu HIROHATA
Abstract: GPS (Global Positioning System) correction data distribution device includes: first communicator that communicates with terminal device; second communicator that communicates with server; HDD (hard drive) that stores a database, the database having at least one coordinate and GPS correction data in association with each other; and manager that manages the database. Manager obtains GPS correction data from server with respect to the coordinate in the database, and updates the database while associating the coordinate with the GPS correction data. Manager refers to the database upon receipt of the GPS correction data distribution request from terminal device, extracts the GPS correction data of the coordinate corresponding to a position of the terminal device, and distributes the extracted GPS correction data to terminal device.
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公开(公告)号：US20180023958A1
公开(公告)日：2018-01-25
申请号：US15701479
申请日：2017-09-12
Inventor： Katsunao TAKAHASHI
Abstract: A navigation satellite system includes first and second electronic devices that calculate position coordinates of the first and second electronic devices by using radio waves from a GNSS satellite. The first electronic device includes a receiver, a first RTK calculator, and a transmitter. The RTK calculator decides, based on received GNSS correction data, integer ambiguity in a difference between a first carrier phase of a first radio wave received by a fixed station and a second carrier phase of a second radio wave received by the first electronic device to calculate a path difference between the first radio wave and the second radio wave. The second electronic device includes a receiver and a second RTK calculator. The second RTK calculator calculates, based on the GNSS correction data, a difference between a third carrier phase of a third radio wave received by the second electronic device and the first carrier phase received from the first electronic device and calculates, by using the integer ambiguity, a path difference between the first radio wave and the third radio wave to calculate second relative coordinates of the second electronic device with respect to the fixed station.
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公开(公告)号：US20170359687A1
公开(公告)日：2017-12-14
申请号：US15670585
申请日：2017-08-07
Inventor： Katsunao TAKAHASHI
CPC classification number: H04W4/021 , G06F21/34 , G06F21/73 , G06F21/85 , G06F2221/2129 , G06Q2220/10 , H04L63/107 , H04W12/06 , H04W12/12
Abstract: An electronic device includes a radio communication unit as an obtainment unit that obtains an SSID of position-dependent information, the position-dependent information being information depending on a position of the electronic device, and a storage in which an SSID table is stored, the SSID table managing the SSID obtained by the radio communication unit and authentication information used by a user to log in to the electronic device while correlating the SSID and the authentication information to each other. The electronic device also includes a controller that performs operating environment setting of the electronic device. The controller compares the SSID obtained in predetermined timing by the radio communication unit with an SSID corresponding to the authentication information about the currently logged-in user in SSIDs managed by the SSID table, and changes the operating environment setting of the electronic device according to a comparison result.
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