ULID data structure, ULID-based location acquisition method and location-based service system
First Claim
1. A universal location identifier (ULID) code structure embodied in a computer-readable medium, comprising:
- a header having version information for identifying a type of ULID code;
data blocks for identifying latitude, longitude and altitude; and
a data block for identifying precision of unsigned integer type so as to identify precision of the latitude, longitude and altitude.
1 Assignment
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Accused Products
Abstract
The present invention relates to an LBS system in which user location information is obtained using a ULID code of RFID tags attached to various places such as a building, a store, road signs, footway and road, and various LBSs are provided based on the location information. The problems that can be caused when using a conventional GPS and a wireless network are solved. It is easy to immediately obtain location information through a tag and security of private information can be enhanced. The LBS system of the present invention of the present invention includes: a plurality of RFID tags distributed on various places, for wirelessly providing a ULID code of a location; an RFID reader for wirelessly receiving the ULID code from an adjacent RFID tag; a local ULID processor for extracting current location information through a wirelessly received ULID code; and a local LBS application for providing a user with an LBS on the basis of the extracted location information.
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Citations
52 Claims
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1. A universal location identifier (ULID) code structure embodied in a computer-readable medium, comprising:
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a header having version information for identifying a type of ULID code; data blocks for identifying latitude, longitude and altitude; and a data block for identifying precision of unsigned integer type so as to identify precision of the latitude, longitude and altitude. - View Dependent Claims (2, 3, 4, 5)
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6. A universal location identifier (ULID) code structure embodied in a computer-readable medium, comprising:
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a header having version information for identifying a type of ULID code; a DB/Mgt ID block for identifying a database including space objects; a class ID block for identifying an object class or a table in the database; and an object ID block for identifying an object class or a space object in the object class or the table. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A universal location identifier (ULID) based location acquisition method comprising:
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(a) distributing RFID tags to a plurality of places and storing a ULID code for the corresponding place in each RFID tag; (b) wirelessly receiving a plurality of ULID codes of the RFID tags though an RFID reader; and (c) obtaining location information corresponding to each of the received ULID codes from a local ULID database and extracting current location information. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A location based service (LBS) system using universal location identifier (ULID), comprising:
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a plurality of RFID tags distributed at various places, for wirelessly providing a ULID code of a location; an RFID reader for wirelessly receiving a plurality of ULID codes from near RFID tags; a local ULID processor for extracting current location information through wirelessly received ULID codes; and a local LBS software application for providing a user with an LBS on the basis of the extracted location information, wherein the RFID reader obtains signal strength information as auxiliary data in receiving the ULID code from each RFID tag. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification