NAVIGATION SIGNAL TRANSMITTING APPARATUS, LOCATION INFORMATION PROVIDING APPARATUS, METHOD FOR TRANSMITTING NAVIGATION SIGNAL, AND METHOD FOR PROVIDING LOCATION INFORMATION
First Claim
1. A navigation signal transmitting apparatus, installed in a facility on a ground, for transmitting a navigation signal to a receiver capable of performing positioning by receiving spectrum spread satellite positioning signals from a plurality of positioning satellites, comprising:
- a transmission antenna;
a storage for storing identification information for specifying said navigation signal transmitting apparatus among a plurality of navigation signal transmitting apparatuses installed in said facility, and resource identification information for specifying a location of an external device on a network to obtain map information indicative of inside of said facility;
a message generator for generating a message signal of said identification information and said resource identification information to be included in said navigation signal;
a modulator for generating said navigation signal by modulating said message signal through a modulation process including a spectrum spread process based on the same type of a spread code as that of each of said satellite positioning signals, said spread code being allotted to said navigation signal transmitting apparatus in advance; and
a transmitter for transmitting said navigation signal from said transmission antenna.
2 Assignments
0 Petitions
Accused Products
Abstract
A navigation signal transmitting apparatus and a location information providing apparatus are provided for reducing time of positioning with a positioning signal from an indoor positioning transmitter. When an information providing server recognizes a transmitter ID of a transmitter from a mobile phone, the server makes reference refers to database associated with the transmitter ID, and reads SVG map information associated with the ID (including information for displaying a map and information of a correspondence relation between the transmitter ID and the location of the transmitter on the map). When the server transmits data of the SVG map information to a base station, the base station wirelessly emits the data of the SVG map information. When the mobile phone detects arrival of the data, the mobile phone can obtain the location of the transmitter from the data in accordance with a browsing operation of a user of the phone.
-
Citations
16 Claims
-
1. A navigation signal transmitting apparatus, installed in a facility on a ground, for transmitting a navigation signal to a receiver capable of performing positioning by receiving spectrum spread satellite positioning signals from a plurality of positioning satellites, comprising:
-
a transmission antenna; a storage for storing identification information for specifying said navigation signal transmitting apparatus among a plurality of navigation signal transmitting apparatuses installed in said facility, and resource identification information for specifying a location of an external device on a network to obtain map information indicative of inside of said facility; a message generator for generating a message signal of said identification information and said resource identification information to be included in said navigation signal; a modulator for generating said navigation signal by modulating said message signal through a modulation process including a spectrum spread process based on the same type of a spread code as that of each of said satellite positioning signals, said spread code being allotted to said navigation signal transmitting apparatus in advance; and a transmitter for transmitting said navigation signal from said transmission antenna. - View Dependent Claims (2, 3)
-
-
4. A location information providing apparatus capable of performing positioning by receiving spectrum spread satellite positioning signals from a plurality of positioning satellites, and providing location information using a plurality of navigation signals, which are spread spectrum signals from a plurality of navigation signal transmitting apparatuses installed in a facility on a ground and which respectively include pieces of identification information for specifying said navigation signal transmitting apparatuses in said facility, comprising:
-
a receiver for receiving said spread spectrum signals; a communication circuit for communicating with an external device on a network; a memory for storing a plurality of patterns of spread codes for said navigation signals, said spread codes being of the same type as those for said satellite positioning signals; demodulators provided in parallel for identifying and demodulating said plurality of navigation signals by performing correlation processes for said plurality of patterns of said spread codes in parallel; an extractor for obtaining resource identification information for specifying a location of said external device on said network from the navigation signal from a predetermined one of said navigation signal transmitting apparatuses, and extracting said identification information from one of said plurality of navigation signals identified, when said navigation signals have been successfully identified and demodulated; and a map rendering processor for obtaining, from said external device using said communication circuit based on said resource identification information, map information for displaying a map of inside of said facility and correspondence information indicating a correspondence relation between said identification information and the location of said navigation signal transmitting apparatus in said facility, and generating an image signal for displaying an map image indicating a location of said navigation signal transmitting apparatus, from which said identification information has been received, on the map of the inside of said facility. - View Dependent Claims (5, 6, 7, 8)
-
-
9. A method for transmitting a navigation signal from a facility on a ground to a receiver capable of performing positioning by receiving spectrum spread satellite positioning signals from a plurality of positioning satellites, comprising:
-
preparing identification information for specifying the navigation signal transmitting apparatus among a plurality of navigation signal transmitting apparatuses installed in said facility, and resource identification information for specifying a location of an external device on a network to obtain map information indicative of inside of said facility; generating a message signal of said identification information and said resource identification information to be included in said navigation signal;
generating said navigation signal by modulating said message signal through a modulation process including a spectrum spread process based on the same type of a spread code as that of each of said satellite positioning signals, said spread code being allotted to said navigation signal transmitting apparatus in advance; andtransmitting said navigation signal from the transmission antenna. - View Dependent Claims (10, 11)
-
-
12. A method, which allows for positioning by receiving spectrum spread satellite positioning signals from a plurality of positioning satellites, for providing location information using a plurality of navigation signals, which are spread spectrum signals from a plurality of navigation signal transmitting apparatuses installed in a facility on a ground and which respectively include pieces of identification information for specifying said navigation signal transmitting apparatuses in said facility, comprising:
-
receiving said spread spectrum signals; communicating with an external device on a network;
storing a plurality of patterns of spread codes for said navigation signals, said spread codes being of the same type as those for said satellite positioning signals;identifying and demodulating said plurality of navigation signals by performing correlation processes for said plurality of patterns of said spread codes in parallel; obtaining resource identification information for specifying a location of said external device on said network from the navigation signal from a predetermined one of said navigation signal transmitting apparatuses, and extracting said identification information from one of said plurality of navigation signals identified, when said navigation signals have been successfully identified and demodulated; and obtaining, from said external device based on said resource identification information, map information for displaying a map of inside of said facility and correspondence information indicating a correspondence relation between said identification information and the location of said navigation signal transmitting apparatus in said facility, and generating an image signal for displaying an map image indicating a location of said navigation signal transmitting apparatus, from which said identification information has been received, on the map of the inside of said facility. - View Dependent Claims (13, 14, 15, 16)
-
Specification