Method and apparatus for obtaining location of user
First Claim
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1. A method of obtaining a location of a user of a portable terminal, the method performed by a processor comprising:
- obtaining first location information of the user of a mobile device using a magnetic field sensor;
searching a pre-stored first map including magnetic field information for a plurality of candidate areas corresponding to the first location information;
selecting at least one search area from the plurality of candidate areas corresponding to the first location information based on second location information of the user; and
determining the at least one search area as the location of the user,wherein the first location information includes one of a horizontal magnetic field component value, a vertical magnetic field component value, a direction of a magnetic field, and an angle between horizontality and verticality that are measured by a magnetic field sensor, andwherein the second location information includes one of the horizontal magnetic field component value, the vertical magnetic field component value, the direction of the magnetic field, the angle between horizontality and verticality, and any other information that are measured by the magnetic field sensor except for the one included in the first location information, information that is measured by an acceleration sensor, an inertial sensor, a gyro sensor, a pressure sensor, an ultrasound sensor, or other sensor, or any of a variety of information that is obtained from a RF-RSSI information, a WLAN map, an RFID map, a vision map, and any other information,wherein the pre-stored first map includes coordinate information of a magnetic field map,wherein the magnetic field information at the coordinate information is saved as three-dimensional components.
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Abstract
A method of obtaining a location of a user includes obtaining first location information of the user; searching a pre-stored first map for a plurality of candidate areas corresponding to the first location information; selecting at least one search area from the plurality of candidate areas corresponding to the first location information based on second location information of the user; and determining the location of the user using at least one search area.
20 Citations
33 Claims
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1. A method of obtaining a location of a user of a portable terminal, the method performed by a processor comprising:
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obtaining first location information of the user of a mobile device using a magnetic field sensor; searching a pre-stored first map including magnetic field information for a plurality of candidate areas corresponding to the first location information; selecting at least one search area from the plurality of candidate areas corresponding to the first location information based on second location information of the user; and determining the at least one search area as the location of the user, wherein the first location information includes one of a horizontal magnetic field component value, a vertical magnetic field component value, a direction of a magnetic field, and an angle between horizontality and verticality that are measured by a magnetic field sensor, and wherein the second location information includes one of the horizontal magnetic field component value, the vertical magnetic field component value, the direction of the magnetic field, the angle between horizontality and verticality, and any other information that are measured by the magnetic field sensor except for the one included in the first location information, information that is measured by an acceleration sensor, an inertial sensor, a gyro sensor, a pressure sensor, an ultrasound sensor, or other sensor, or any of a variety of information that is obtained from a RF-RSSI information, a WLAN map, an RFID map, a vision map, and any other information, wherein the pre-stored first map includes coordinate information of a magnetic field map, wherein the magnetic field information at the coordinate information is saved as three-dimensional components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 33)
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15. An apparatus for obtaining a location of a user of a portable terminal, the apparatus comprising:
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an obtaining unit configured to obtain first location information of the user of a mobile device using a magnetic field sensor; a search unit configured to search a pre-stored first map including magnetic field information for a plurality of candidate areas corresponding to the first location information; a selecting unit configured to select at least one search area from the plurality of candidate areas corresponding to the first location information based on second location information of the user; and a determining unit configured to determine the at least one search area as the location of the user, wherein the first location information includes one of a horizontal magnetic field component value, a vertical magnetic field component value, a direction of a magnetic field, and an angle between horizontality and verticality that are measured by a magnetic field sensor, and wherein the second location information includes one of the horizontal magnetic field component value, the vertical magnetic field component value, the direction of the magnetic field, the angle between horizontality and verticality, and any other information that are measured by the magnetic field sensor except for the one included in the first location information, information that is measured by an acceleration sensor, an inertial sensor, a gyro sensor, a pressure sensor, an ultrasound sensor, or other sensor, or any of a variety of information that is obtained from a RF-RSSI information, a WLAN map, an RFID map, a vision map, and any other information, wherein the pre-stored first map includes coordinate information of a magnetic field map, wherein the magnetic field information at the coordinate information is saved as three-dimensional components. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of obtaining a location of a user of a portable terminal, the method performed by a processor comprising:
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obtaining a search area containing the location of the user of a mobile device from a first map based on first location information of the user and second location information of the user using a magnetic field sensor; and obtaining the location of the user within the search area using the search area; wherein the search area is smaller than an entire area covered by the first map; wherein the first location information includes one of a horizontal magnetic field component value, a vertical magnetic field component value, a direction of a magnetic field, and an angle between horizontality and verticality that are measured by a magnetic field sensor, and wherein the second location information includes one of the horizontal magnetic field component value, the vertical magnetic field component value, the direction of the magnetic field, the angle between horizontality and verticality, and any other information that are measured by the magnetic field sensor except for the one included in the first location information, information that is measured by an acceleration sensor, an inertial sensor, a gyro sensor, a pressure sensor, an ultrasound sensor, or other sensor, or any of a variety of information that is obtained from a RF-RSSI information, a WLAN map, an RFID map, a vision map, and any other information, and the first location information of the user and the second location information of the user are different types of location information, wherein the first map includes coordinate information of a magnetic field map, wherein the magnetic field information at the coordinate information is saved as three-dimensional components. - View Dependent Claims (29, 30, 31, 32)
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Specification