KR100773360B1 - Data terminal and position measurement method for the same - Google Patents

Abstract

A data terminal and a position measurement method for the same are provided to perform position determination without mounting an additional hardware or paying a communications fee in an A-GPS(Assisted Global Positional System) method by using satellite orbit information included in a broadcast signal transmitted from a DMB(Digital Multimedia Broadcast) broadcasting station server. A data terminal(10) includes a DMB receiving device(130), a GPS receiving device(120), and a controlling part(110). The DMB receiving device receives a DMB broadcast signal. The GPS receiving device performs position measurement by using satellite orbit information. The controlling part extracts the satellite orbit information from the DMB broadcast signal, provides the signal to the GPS receiving device, and receives and stores a position measurement result from the GPS receiving device, according as power is applied to the data terminal. The GPS receiving device measures the position of the data terminal in an A-GPS method by using pseudo distance information measured from information received from a GPS satellite(20) and the satellite orbit information from the controlling part.

Description

Data terminal and position measurement method for the same {Data Terminal and Position Measurement Method for the Same}

1 is a configuration diagram of a navigation system to which the present invention is applied;

2 is a block diagram of a navigation terminal according to a first embodiment of the present invention;

3 is a block diagram of a navigation terminal according to a second embodiment of the present invention;

4 is a configuration diagram of a navigation terminal according to a third embodiment of the present invention;

5 is a configuration diagram of a navigation terminal according to a fourth embodiment of the present invention;

6 is a view for explaining an SDI message applied to the present invention;

7 is a flowchart illustrating a position measuring method according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: information terminal 20: GPS satellite

30: DMB broadcasting station server 40: DMB base station

110: control unit 120: GPS receiver

130: DMB receiving device 140: memory

The present invention relates to an information terminal, and more particularly, to an information terminal capable of measuring position information by an A-GPS (Assisted Global Positioning System) method according to satellite orbit information transmitted from a digital multimedia broadcasting (DMB) broadcasting station server. And it relates to a position measuring method for this.

The A-GPS method, which is one of the location measuring methods, is a technology in which a terminal equipped with a GPS receiver measures location of a terminal by mixing location information received from a satellite and location information received from a base station of a mobile communication system. When using the A-GPS method, it is possible to shorten the positioning time and to identify a more accurate position compared to the case of using only the GPS receiver alone.

On the other hand, the navigation terminal for guiding the driving route of the vehicle is gradually increasing its penetration rate, the navigation terminal is generally equipped with a GPS receiver. When main power is applied to use the navigation service, the navigation terminal should receive the orbit information and pseudo range (PR) information from the satellite using a GPS receiver to determine the current location of the vehicle. In the event of an obstacle such as being obscured by the back, it takes a few minutes to determine the current location of the vehicle, causing inconvenience to the user. Here, PR means the distance between the terminal and the satellite measured from the difference between the time when the signal is transmitted from the satellite and the time when the signal is received by the terminal.

That is, the orbital information of the satellite is updated at the current 4 hour period. When the navigation terminal is checked at the time of departure of the vehicle, the orbital information of the satellite is confirmed. This will take a long time, increasing customer dissatisfaction.

Therefore, when measuring the position using the A-GPS method in the navigation terminal is expected to shorten the time when the initial position grasp.

However, in order to use the current A-GPS method, hardware such as a modem for communicating with a base station of a mobile communication system must be additionally installed in a navigation terminal, and a communication fee is generated because the mobile terminal must be connected to the mobile communication system every time the location is measured. There are disadvantages.

In recent years, the penetration rate of portable information terminals such as cellular phones, personal communication service (PCS) phones, personal digital assistants (PDAs), portable multimedia players (PMPs), etc. is increasing day by day, and location-based services using such portable information terminals are increasing. It is also actively provided.

However, the portable information terminal also needs to be connected to the base station of the mobile communication system in order to measure the location using the A-GPS method. As a result, a communication fee is generated, thereby increasing the burden on the customer and decreasing the utilization rate of the location-based service. .

The present invention has been made to solve the above problems and disadvantages, and provides an information terminal capable of measuring the position by the A-GPS method using the orbit information transmitted from the digital multimedia broadcasting station server and a method for measuring the position therefor There is a technical challenge.

Another technical problem of the present invention is to make it possible to measure the position of a terminal at high speed using an A-GPS method without adding additional hardware to an information terminal having a DMB receiving module.

According to a first aspect of the present invention, there is provided an information terminal including: a DMB receiving apparatus for receiving a digital multimedia broadcasting (DMB) broadcast signal; A GPS (Global Positioning System) receiver for performing position measurement using satellite orbit information; And a controller configured to extract satellite orbit information from the DMB broadcast signal received by the DMB receiver and provide the GPS information to the GPS receiver, and to receive and store a location measurement result from the GPS receiver as power is supplied to the information terminal. Includes, The GPS receiver measures the position of the information terminal by the A-GPS (Assisted GPS) method using the pseudo-range information measured from the information received from the GPS satellite and the satellite orbit information received from the control unit do.

In addition, the information terminal according to the second embodiment of the present invention includes a DMB receiving apparatus for receiving a DMB broadcast signal; A GPS (Global Positioning System) receiver for performing position measurement; And a controller configured to extract satellite orbit information from the DMB broadcast signal received by the DMB receiver and provide the GPS orbit information to the GPS receiver as power is supplied to the information terminal, wherein the GPS receiver is received from a GPS satellite. The position of the information terminal is measured by A-GPS (Assisted GPS) using the pseudorange information measured from the information and the satellite orbit information received from the controller, and stores the position measurement result.

In addition, the information terminal according to the third embodiment of the present invention includes a GPS (Global Positioning System) receiver for performing position measurement using satellite orbit information; A DMB receiver which receives a digital multimedia broadcasting (DMB) broadcast signal and extracts satellite orbit information from the broadcast signal when power is applied; And a controller configured to receive satellite trajectory information from the DMB receiver, transmit the satellite trajectory information to the GPS receiver, and receive and store a location measurement result from the GPS receiver. The GPS receiver includes information received from a GPS satellite. The position of the information terminal is measured by A-GPS (Assisted GPS) method using the pseudo range information measured from and the satellite orbit information received from the controller.

In addition, the information terminal according to the fourth embodiment of the present invention includes a GPS (Global Positioning System) receiving apparatus for performing position measurement; And a DMB receiver configured to receive a digital multimedia broadcasting (DMB) broadcast signal as power is applied, extract satellite satellite information from the broadcast signal, and transmit the extracted satellite orbit information to the controller; And a controller for controlling the GPS receiver and the DMB receiver, wherein the GPS receiver uses the pseudo-range information measured from the information received from the GPS satellites and the satellite trajectory information received from the controller. The position of the information terminal is measured by an assisted GPS (GPS) method, and the position measurement result is stored.

On the other hand, in the position measuring method according to an embodiment of the present invention, the GPS (Global Positioning System) receiver and the Digital Multimedia Broadcasting (DMB) receiver are connected internally or externally, respectively, and the position measurement in the information terminal having a control unit. As a method,

A first step of measuring a pseudo distance from information received from a GPS satellite by the GPS receiver when power is applied to the information terminal; A second step in which the DMB receiving apparatus tunes to a DMB broadcasting system and receives a DMB broadcasting signal when power is supplied to the information terminal; A third step of the information terminal extracting satellite orbit information from the DMB broadcast signal; A fourth step of extracting, by the information terminal, the satellite orbit information reception time; A fifth step of extracting, by the information terminal, approximately position information of the information terminal; And a sixth step of the GPS receiver measuring the position of the information terminal by using the pseudorange and the satellite orbit information, the satellite orbit information reception time, and the approximate location information.

The present invention can be applied to an information terminal such as a navigation terminal, a cellular phone, a PCS phone, a PDA, a PMP, etc. having a DMB (Digital Multimedia Broadcasting) receiving module. Hereinafter, the present invention will be described with reference to the accompanying drawings. A preferred embodiment of the present invention will be described in more detail.

1 is a block diagram of a navigation system applied to the present invention.

As shown, the navigation terminal 10 includes a control unit 110, a GPS receiver 120, a DMB receiver 130, and a memory 140 to receive orbit information from the satellite 20. , Through the DMB base station 40 receives a broadcast signal including satellite orbit information transmitted from the DMB broadcasting station server 30. In the present exemplary embodiment, the case where the navigation terminal 10 includes the GPS receiver 120 and the DMB receiver 130 is described. However, the GPS receiver 120 and the DMB receiver 130 are mounted externally. Of course it is also possible.

The DMB broadcasting server 30 may be a satellite DMB broadcasting server or a terrestrial DMB broadcasting server. Regardless of the type of DMB service provided, the DMB broadcasting station server 30 has satellite orbit information on its own. When the orbit information is provided to the navigation terminal 10, the navigation terminal performs position measurement using the A-GPS method. can do.

The navigation terminal 10 drives the GPS receiver 120 and the DMB receiver 130 when the power is applied, and the PR information received by the GPS receiver 120 and the satellite orbit information received by the DMB receiver 130. Perform the position measurement using.

Here, the satellite orbit information transmitted from the DMB base station 40 may further include satellite orbit information receiving time and location information of the DMB broadcasting station server 30, and the location information may be the DMB broadcasting station server 30 or the DMB base station ( Approximate latitude / longitude information in 40).

2 is a block diagram of a navigation terminal according to a first embodiment of the present invention.

As shown, the navigation terminal 10-1 according to an embodiment of the present invention includes a control unit 110-1, a GPS receiver 120-1, a DMB receiver 130-1, and a memory 140. It includes, the GPS receiver 120-1 and the DMB receiver 130-1 may be mounted internally or externally.

The detailed structure of each component part is as follows.

First, the controller 110 may include a GPS receiver control module 1101, a DMB receiver control module 1102, a location information management module 1103, a satellite orbit information extraction module 1104, a time information extraction module 1105, and the like. A location information extraction module 1106.

The GPS receiver control module 1101 and the DMB receiver control module 1102 control the operations of the GPS receiver 120-1 and the DMB receiver 130-1, respectively.

The satellite orbit information extraction module 1104 extracts satellite orbit information from the DMB broadcast signal received by the DMB receiver 130-1 and provides the GPS orbit information to the GPS receiver 120-1, and the time information extraction module 1105 The satellite orbit information reception time is detected and provided to the GPS receiver 120-1. Here, the time information is used by the time information included in the broadcast signal transmitted by the DMB base station 40 to the DMB receiver 130-1, or the GPS receiver 120-1 or the controller 110-1. If the clock is built in, it can be detected using it.

In addition, the location information extraction module 1106 extracts location information from the DMB broadcast signal received by the DMB receiving apparatus 130-1 and provides the location information to the location information management module 1103. Here, the position information may be the position of the broadcasting station server 30 or the DMB base station 40, or may be fixedly set to an arbitrary position in some cases.

The location information management module 1103 compares the location information provided by the location information extraction module 1106 with the location information stored in the memory 140, that is, the most recent location information transmitted by the GPS receiver 120-1. Thereafter, the optimum location information of the navigation terminal 10-1 is selected and provided to the GPS receiver 120-1.

Next, the GPS receiver 120-1 includes a GPS RF unit 1201, a GPS baseband processor 1202, and a GPS signal processor, and the GPS signal processor includes a PR measurement module 1203 and a position calculation module 1204. It includes.

The GPS RF unit 1201 receives a signal transmitted from the GPS satellite 20 and converts the signal to a baseband frequency, and the GPS baseband processing unit 1202 processes the signal converted to the baseband frequency to perform data necessary for PR measurement. Create

The PR measurement module 1203 measures the PR between the GPS satellite 20 and the navigation terminal 10-1 by using the data generated by the GPS baseband processor 1202.

In addition, the position calculation module 1204 is optimized for the satellite orbit information received from the satellite orbit information extraction module 1104 of the controller 110-1 and the navigation terminal 10-1 received from the location information management module 1103. The current location of the navigation terminal 10-1 is measured using the location information, the time information received from the time information extraction module 1105, and the PR measured by the PR measurement module 1203, and the measurement result is controlled. 1), the location information management module 1103 stores it in the memory 140.

Meanwhile, the DMB receiver 130-1 includes a DMB RF unit 1301, a DMB baseband processor 1303, and a DMB signal processor, and the DMB signal processor includes a video play module 1303 and an audio play module 1304. And a data reproducing module 1305.

The DMB RF unit 1301 receives a DMB broadcast signal from the DMB base station 40 and converts it into a baseband frequency, and the DMB baseband processor 1302 processes the signal included in the frequency-converted signal to process the DMB signal. To pass on.

In addition, the video reproducing module 1303 and the audio reproducing module 1304 of the DMB signal processing unit decode the DMB broadcast signal and output the video and audio signals through an output device, and the data reproducing module 1305 decodes the DMB broadcast signal. To provide the data signal to the controller 110-1.

Although not shown, the navigation terminal 10-1 further includes a navigation device to measure the current location in the location calculation module 1204 as power is applied, and as destination information is set by the user, the memory 140. Route information is generated using the road information stored in) and provided to the user.

3 is a block diagram of a navigation terminal according to a second embodiment of the present invention.

In the navigation terminal 10-2 according to the present embodiment, the location information management module 1103 included in the control unit 110-2 of the navigation terminal 10-1 shown in FIG. 2), the control unit 110-2 according to the GPS receiver control module 1111, DMB receiver control module 1112, satellite orbit information extraction module 1113, time information extraction module 1114 And a location information extraction module 1115.

The GPS signal processor of the GPS receiver 120-2 includes a PR measurement module 1213, a location calculation module 1214, and a location information management module 1215.

In the navigation terminal 10-2, the DMB receiver 130-2 is tuned to the DMB base station 40 to receive a broadcast signal, and the satellite orbit information extraction module 1113 and the time of the control unit 110-2 are used. The information extraction module 1114 extracts satellite orbit information and time information included in the broadcast signal, respectively, and provides the extracted information to the position calculation module 1214 of the GPS receiver 120-2, and the location information extraction module 1115. Extracts the location information or the fixed location information included in the broadcast signal and provides the extracted location information to the location information management module 1215.

Meanwhile, the location information management module 1215 stores the most recently measured location information in the location calculation module 1214 in the second memory 1216 of the GPS receiver 120-2, and controls the controller 110-2. After comparing the location information received from the location information extraction module 1115 and the location information stored in the second memory 1216, the optimal location information is selected and provided to the location calculation module 1214.

The position calculation module 1214 may include satellite orbit information received from the satellite orbit information extraction module 1113 of the controller 110-2, time information received from the time information extraction module 1114, and location information management module 1215. The current position of the navigation terminal 10-2 is measured by using the optimal position information transmitted from the AT and the PR measured by the PR measurement module 1213. In addition, the measurement result is stored in the second memory 1216 by the location information management module 1215.

4 is a configuration diagram of a navigation terminal according to a third embodiment of the present invention.

The navigation terminal 10-3 according to the present embodiment includes a satellite orbit information extraction module 1104 and a time information extraction module included in the control unit 110-2 of the navigation terminal 10-1 shown in FIG. 2. 1105 and the location information extraction module 1106 are provided in the DMB receiver 130-3, and accordingly, the controller 110-3 includes the GPS receiver control module 1121 and the DMB receiver control module 1122. ) And a location information management module 1123.

In addition, the DMB signal processing unit of the DMB receiving apparatus 130-3 includes a video reproducing module 1323, an audio reproducing module 1324, a data reproducing module 1325, a satellite orbit information extracting module 1326, and a time information extracting module ( 1327 and location information extraction module 1328.

In the present embodiment, the satellite orbit information extraction module 1326 extracts satellite orbit information included in the broadcast signal received from the DMB base station 40 and transmits the satellite orbit information to the control unit 110-3. ) And the location information extraction module 1328 respectively extract time information and location information included in the broadcast signal and transmit them to the control unit 110-3.

Accordingly, the location information management module 1123 of the control unit 110-3 receives the location information received from the DMB receiver 130-3 and the location information most recently transmitted by the GPS receiver 120-3. Select the optimal location information, and transmit the selected location information to the location calculation module 1224 of the GPS receiver 120-3, and extract the satellite orbit information and time information transmitted by the satellite orbit information extraction module 1326 The time information transmitted by the module 1327 is transmitted to the position calculation module 1224 of the GPS receiver 120-3.

In addition, the GPS receiver 120-3 uses the satellite orbit information, time information, and position information received through the controller 110-3 and the PR measured by the PR measurement module 1223. The position of 3) is measured, and the position measurement result is stored in the memory 140 by the position information management module 1123.

In the present embodiment, the DMB receiving apparatus 130-3 includes the satellite orbit information extracting module 1326, the time information extracting module 1327, and the location information extracting module 1328, but the DMB receiving apparatus ( The satellite orbit information extraction module 1326 may be configured in the 130-3, and the time information extraction module and / or the location information extraction module 1328 may be configured in the controller 110-3.

5 is a configuration diagram of a navigation terminal according to a fourth embodiment of the present invention.

In the navigation terminal 10-4 according to the present embodiment, the position information management module 1103 included in the control unit 110-2 of the navigation terminal 10-1 shown in FIG. 4), the satellite orbit information extraction module 1104, the time information extraction module 1105, and the location information extraction module 1106 are provided in the DMB receiving apparatus 130-4. Accordingly, the controller 110-4 includes a GPS receiver control module 1121 and a DMB receiver control module 1122.

In addition, the GPS signal processor of the GPS receiver 120-4 includes a PR measurement module 1233, a position calculation module 1234, and a location information management module 1235, and the DMB of the DMB receiver 130-4. The signal processor includes a video reproducing module 1333, an audio reproducing module 1334, a data reproducing module 1335, a satellite orbit information extracting module 1336, a time information extracting module 1335, and a location information extracting module 1338. do.

In the present embodiment, the satellite orbit information extraction module 1336, the time information extraction module 1357, and the location information extraction module 1338 of the DMB receiver are included in the broadcast signals received from the DMB base station 40, respectively. The orbital information, time information, and location information are extracted and transmitted to the control unit 110-4, and the control unit 110-4 transmits the same to the GPS receiver 120-4, so that the GPS receiver 120-4 can receive the information. The position calculation module 1234 makes it available for position measurement.

The location information management module 1235 of the GPS receiver 120-4 selects the best location information from the location information received through the controller 110-4 and the location information stored in the second memory 1236. The location calculation module 1234 uses satellite orbit information received through the control unit 110-4, time information, location information selected by the location information management module 1235, and PR measured by the PR measurement module 1233. The position of the navigation terminal 10-4 is measured.

In addition, the location measurement result is stored in the second memory 1236 by the location information management module 1236.

The navigation terminal 10 according to the first to fourth embodiments described above uses satellite orbit information transmitted in the data channel from the DMB base station 40 to measure the position of the navigation terminal 10. The DMB base station 40 ) May transmit satellite orbit information, in particular, using a Transport Protocol Expert Group (TPEG) message.

Recently, a technology for providing a traffic and travel information (TTI) service using a DMB broadcast signal has been commercialized, and this information is transmitted through a TPEG (Transport Protocol Expert Group) protocol.

The TPEG standard is a standardized state of Road Traffic Message (RTM), Public Transport Information (PTI), and so on. You can find out the speed of communication in advance, and you can be informed in advance of dangerous section information such as road construction and accident news.

In the present invention, by using the safety-driving-information (SDI) message included in the TPEG message, satellite orbit information is transmitted from the DMB system consisting of a DMB broadcasting station server and a DMB base station to an information terminal such as a navigation terminal. In the information terminal, location measurement may be performed using the A-GPS method.

TPEG messages have the same container structure, and one of these TPEG messages is an SDI message.

6 is a diagram for explaining an SDI message applied to the present invention.

The TPEG message related to the TPEG application service is transmitted to the DMB receiver 130 in the form as shown in FIG. 6. SDI messages include message management containers, SDI event containers, and TTI location containers. Message management containers include the following:

Message identifier; Identifier for the message associated with each event

-Version information; Sequential number to identify successive messages with the same message

Message generation time; The date and time stamp records the date and time that the message was actually created, and is used to manage the message.

Start time; The time at which an event enters a state, which may indicate the date when the event has already entered or is scheduled for future entry.

An end time; The time when an event leaves a state, which can indicate when it is already out of date or scheduled to leave in the future

Message valid time; When the message is no longer valid, that is, when the message is deleted

Meanwhile, the SDI event container includes a point safe operation item, a section safe operation item, a roadside service facility component (RSF), and a validity item.

Here, the point safe driving section describes information on safe driving such as frequent accidents and dangerous points on the road, and the section safe driving section describes information related to safe driving such as frequent sections and dangerous sections on the road. The RSF is a part that describes information on the transportation convenience facilities necessary for safe driving on the road, and the validity item means information on the total number of messages constituting the SDI message.

The TTI location container then contains location information according to terrestrial or satellite DMB traffic and travel information service matching standards.

In the present invention, by including satellite orbit information in the reserved area allocated to the manufacturer of the navigation terminal 10 of the event container of the SDI message, the navigation terminal 10 extracts satellite orbit information from the SDI message, GPS Along with the PR measured by the receiving device 120 to perform the position measurement in the A-GPS method. Here, the satellite orbit information transmitted through the SDI message may further include satellite orbit information reception time and position information of the DMB broadcasting station server 30, and the position information may be the DMB broadcasting station server 30 or the DMB base station 40. Approximate latitude / longitude information for.

7 is a flowchart illustrating a position measuring method according to an embodiment of the present invention.

First, as power is applied to the navigation terminal 10 (S101), the GPS receiver 120 is driven to measure PR (S103), while the DMB receiver 130 is driven to the DMB base station 40. Tuning is performed (S105).

Accordingly, the DMB receiver 130 broadcasts the satellite orbit information, or satellite orbit information and time information, or the satellite orbit information and location information, or the satellite orbit information, time information and location information from the DMB base station 40. Receive a signal (S107).

Thereafter, the satellite orbit information extracting module (1105 of FIG. 2, 1113 of FIG. 3, 1326 of FIG. 4, and 1336 of FIG. 5) included in the controller 110 or the DMB receiver 130 may use satellite orbit information from the DMB broadcast signal. Is extracted (S111) and stored in the memory 140.

In addition, the time information extraction module (1106 of FIG. 2, 1114 of FIG. 3, 1327 of FIG. 4, and 1337 of FIG. 5) included in the controller 110 or the DMB receiver 130 may determine a time when the satellite orbit information is received. Extract. In this case, when the controller 110 extracts time information, the time information may be detected from a DMB broadcast signal, or may be detected from a clock built in the controller 110 or the GPS receiver 120.

Next, the location information extraction module (1107 of FIG. 2, 1115 of FIG. 3, 1328 of FIG. 4, and 1338 of FIG. 5) included in the controller 110 or the DMB receiver 130 may be the controller 110 or the GPS receiver. The location information included in the broadcast signal included in the 120 is extracted, and the location information management module (1103 of FIG. 2, 1215 of FIG. 3, 1123 of FIG. 4, and 1235 of FIG. 5) may be configured by the GPS receiver 120. The optimal location information is selected from the most recently stored location information and location information extracted by the location information extraction module (S113).

At this time, when the control unit 110 extracts the location information, it is also possible to use the fixed location information without extracting the location information from the DMB broadcast signal.

In this way, after the satellite orbit information, the time information and the position information is detected, the position calculation module of the GPS receiver performs the PR information measured in step S103 and the satellite orbit information, time information and position information extracted in steps S109 to S113. The position of the navigation terminal 10 is measured using S (S115).

In addition, the measured position information is stored in the memory by the position information management module (1103 of FIG. 2, 1215 of FIG. 3, 1123 of FIG. 4, and 1235 of FIG. 5) provided in the controller 110 or the GPS receiver 120. Stored.

In the above description, the controller 110, the GPS receiver 120, and the DMB receiver 130 may be applied to a portable information terminal such as a cellular phone, a PCS phone, a PDA, a PMP, and the like.

Even in this case, the portable information terminal may be equipped with a GPS receiver and a DMB receiver, either internally or externally, and are included in the broadcast signal received by the DMB receiver without having to connect to a base station of the mobile communication system when measuring a position. Using satellite orbit information, positioning can be performed accurately at high speed. In addition, various location-based services may be used using the measured location information.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

According to the present invention, by using the satellite orbit information included in the broadcast signal transmitted from the DMB broadcasting station server without the information terminal connected to the base station of the mobile communication system to obtain satellite orbit information, it is possible to install a separate hardware or to communicate Positioning can be performed in A-GPS mode without paying a fee.

Accordingly, it is possible to improve the position measurement performance in the information terminal, to be produced at a low price, as well as to reduce the usage fee to improve the user's satisfaction.

Claims (48)

A DMB receiving apparatus for receiving a DMB broadcast signal; A GPS (Global Positioning System) receiver for performing position measurement using satellite orbit information; And A controller for extracting satellite orbit information from the DMB broadcasting signal received by the DMB receiving apparatus and providing the GPS information to the GPS receiving apparatus, and receiving and storing a location measurement result from the GPS receiving apparatus as power is supplied to the information terminal; Including, The GPS receiver measures the position of the information terminal by A-GPS (Assisted GPS) method using pseudo range information measured from information received from a GPS satellite and satellite orbit information received from the controller. Information terminal. The method of claim 1, And the control unit provides the GPS receiver with time information of receiving satellite orbit information together with the satellite orbit information, approximately position information of the information terminal, or time information and position information. The method according to claim 1 or 2, The control unit includes a time information extraction module for detecting the satellite orbit information receiving time; A location information extraction module for extracting general location information of the information terminal; And Receives the most recent location information measured by the GPS receiver, selects the best location information from the location information extracted by the location information extraction module, and the location information received from the GPS receiver to transmit to the GPS receiver A location information management module; Information terminal comprising a. The method of claim 3, wherein And the time information is obtained from a clock built in the controller. The method of claim 3, wherein And the time information is detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 3, wherein And the positional information is positional information fixed to the arbitrary position. The method of claim 3, wherein And the position information is approximately latitude / longitude information of a DMB broadcasting station server or a DMB base station detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 1, The GPS receiver, or the DMB receiver, or the GPS receiver and the DMB receiver are built in or external to the information terminal. The method of claim 1, And the information terminal is a navigation terminal. A DMB receiving apparatus for receiving a DMB broadcast signal; A GPS (Global Positioning System) receiver for performing position measurement; And And a controller configured to extract satellite orbit information from the DMB broadcast signal received by the DMB receiver and provide the GPS terminal to the GPS receiver as power is supplied to the information terminal. The GPS receiver measures the position of the information terminal by A-GPS (Assisted GPS) method using pseudo range information measured from information received from a GPS satellite and satellite orbit information received from the controller, and measures a position. And an information terminal for storing the result. The method of claim 10, The GPS receiver includes a PR measuring module for measuring pseudo range information from information received from a GPS satellite; A position calculation module for measuring the position of the information terminal using the pseudorange information and the satellite orbit information received from the controller; And A location information management module for storing and managing location information measured by the location calculation module in a memory; Information terminal comprising a. The method of claim 10, And the control unit provides the GPS receiver with time information of receiving satellite orbit information together with the satellite orbit information, approximately position information of the information terminal, or time information and position information. The method of claim 10, The control unit may include a time information extraction module configured to detect the satellite orbit information reception time; And A location information extraction module for extracting general location information of the information terminal; Information terminal comprising a. The method of claim 13, And the time information is obtained from a clock built in the controller. The method of claim 13, And the time information is detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 13, And the positional information is positional information fixed to the arbitrary position. The method of claim 13, And the position information is approximately latitude / longitude information of a DMB broadcasting station server or a DMB base station detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 10, The GPS receiver, or the DMB receiver, or the GPS receiver and the DMB receiver are built in or external to the information terminal. The method of claim 10, And the information terminal is a navigation terminal. A GPS (Global Positioning System) receiver for performing position measurement using satellite orbit information; A DMB receiver which receives a digital multimedia broadcasting (DMB) broadcast signal and extracts satellite orbit information from the broadcast signal when power is applied; And And a controller configured to receive satellite orbit information from the DMB receiver and transmit the satellite orbit information to the GPS receiver, and receive and store a position measurement result from the GPS receiver. The GPS receiver measures the position of the information terminal by A-GPS (Assisted GPS) method using pseudo range information measured from information received from a GPS satellite and satellite orbit information received from the controller. Information terminal. The method of claim 20, And the DMB receiving apparatus provides time information of receiving satellite orbit information together with the satellite orbit information, approximately position information of the information terminal, or time information and position information to the controller. The method of claim 20, The DMB receiving apparatus further comprises a time information extraction module for detecting the satellite orbit information receiving time from the broadcast signal. The method of claim 22, And the time information is detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 20, The control unit is an information terminal, characterized in that for transmitting the satellite orbit information reception time obtained from the clock embedded in the control unit to the GPS receiver. The method of claim 20, The DMB receiving apparatus further comprises a location information extraction module for extracting approximately location information of the DMB broadcasting system from the broadcast information. The method of claim 25, And the position information is approximately latitude / longitude information of a DMB broadcasting station server or a DMB base station detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 20, The control unit, characterized in that for transmitting the position information fixed to the arbitrary position to the GPS receiver. The method of claim 20, The GPS receiver, or the DMB receiver, or the GPS receiver and the DMB receiver are built in or external to the information terminal. The method of claim 20, And the information terminal is a navigation terminal. A GPS (Global Positioning System) receiver for performing position measurement; A DMB receiving apparatus receiving a digital multimedia broadcasting (DMB) broadcasting signal as power is applied, extracting satellite orbit information from the broadcasting signal, and transmitting the extracted satellite orbit information to a control unit; And And a controller for controlling the GPS receiver and the DMB receiver. The GPS receiver measures the position of the information terminal by A-GPS (Assisted GPS) method using pseudo range information measured from information received from a GPS satellite and satellite orbit information received from the controller, and measures a position. And an information terminal for storing the result. The method of claim 30, The GPS receiver includes a PR measuring module for measuring pseudo range information from information received from a GPS satellite; A position calculation module for measuring the position of the information terminal using the pseudorange information and the satellite orbit information received from the controller; And A location information management module for storing and managing location information measured by the location calculation module in a memory; Information terminal comprising a. The method of claim 30, And the DMB receiving apparatus provides time information on which satellite orbit information is received together with the satellite orbit information, or approximately position information of the information terminal, or time information and position information to the controller. The method of claim 32, The DMB receiving apparatus further comprises a time information extraction module for detecting the satellite orbit information receiving time from the broadcast signal. The method of claim 33, wherein And the time information is detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 30, The control unit is an information terminal, characterized in that for transmitting the satellite orbit information reception time obtained from the clock embedded in the control unit to the GPS receiver. The method of claim 32, The DMB receiving apparatus further comprises a location information extraction module for extracting approximately location information of the DMB broadcasting system from the broadcast information. The method of claim 36, And the position information is approximately latitude / longitude information of a DMB broadcasting station server or a DMB base station detected from a broadcast signal received by the DMB receiving apparatus. The method of claim 30, The control unit, characterized in that for transmitting the position information fixed to the arbitrary position to the GPS receiver. The method of claim 30, The GPS receiver, or the DMB receiver, or the GPS receiver and the DMB receiver are built in or external to the information terminal. The method of claim 30, And the information terminal is a navigation terminal. A GPS (Global Positioning System) receiver and a Digital Multimedia Broadcasting (DMB) receiver are connected internally or externally, respectively, and have a control unit. A first step of measuring a pseudo distance from information received from a GPS satellite by the GPS receiver when power is applied to the information terminal; A second step in which the DMB receiving apparatus tunes to a DMB broadcasting system and receives a DMB broadcasting signal when power is supplied to the information terminal; A third step of the information terminal extracting satellite orbit information from the DMB broadcast signal; A fourth step of extracting, by the information terminal, the satellite orbit information reception time; A fifth step of extracting, by the information terminal, approximately position information of the information terminal; And A sixth step of the GPS receiver measuring the position of the information terminal using the pseudo distance and the satellite orbit information, the satellite orbit information reception time and the approximate location information; Position measuring method comprising a. 42. The method of claim 41 wherein The third step is the position measuring method characterized in that the control unit extracts satellite orbit information from the DMB broadcast signal received by the DMB receiving apparatus. 42. The method of claim 41 wherein Wherein the third step, the DMB receiving apparatus is a step of extracting satellite orbit information from the DMB broadcast signal. 42. The method of claim 41 wherein The fourth step is a position measuring method characterized in that the control unit detects the satellite orbit information receiving time from the clock embedded in the control unit or the GPS receiver. 42. The method of claim 41 wherein Wherein the step 4, wherein the DMB receiving apparatus detects the satellite orbit information receiving time from the DMB broadcast signal. 42. The method of claim 41 wherein In the fifth step, the control unit extracts latitude / longitude information of the DMB broadcasting system from the DMB broadcasting signal. 42. The method of claim 41 wherein The fifth step is a position measuring method characterized in that the control unit extracts the position information fixed to an arbitrary position. 42. The method of claim 41 wherein The fifth step is the step of extracting the latitude / longitude information of the DMB broadcasting system from the DMB receiving apparatus by the DMB receiving signal.

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