KR101261771B1 - System for controlling and tracking stolen apparatus using digital multimedia data broadcasting, apparatus thereof, and method thereof - Google Patents

Abstract

The present invention relates to a system for controlling and tracking a stolen device using digital multimedia data broadcasting, an apparatus therefor and a method therefor. The present invention, when detecting the theft of a user terminal or a host device equipped with a user terminal, generates and generates a theft control message for indicating an action that can be taken when the user terminal or a host device equipped with a user terminal is stolen A broadcast server for transmitting the stolen control message through a broadcast signal; And the user terminal receiving the theft control message and performing a theft operation according to the received theft control message. The present invention provides apparatuses and methods for theft control and tracking according to the present invention. to provide.

Description

SYSTEM FOR CONTROLLING AND TRACKING STOLEN APPARATUS USING DIGITAL MULTIMEDIA DATA BROADCASTING, APPARATUS THEREOF, AND METHOD THEREOF}

The present invention relates to digital multimedia data broadcasting, and more particularly, to a system for controlling and tracking a stolen device using digital multimedia data broadcasting, an apparatus therefor and a method therefor.

In the richness of the material, modern people own many goods, and thus, the loss of property is frequent. Various location tracking techniques are mobilized to track and recover these lost items. For example, the location tracking technology using the base station of the broadband mobile communication network is too severe, the reliability is low, when using only simple GPS, the error range is more reliable than the technology using the base station, but the loss is small More precise location information is required.

In addition, in order to recover lost items quickly, not only provide accurate location information, but also procedures for delaying such processing before complete processing of lost items are required.

On the other hand, if the property is lost, the tangible or intangible secondary damage associated with the lost property may be greater than the primary damage based on the property value of the lost property itself. Such secondary damages include, for example, losing the value of memories given to previously taken image files and videos in the case of cameras, or invading the privacy of image files or videos that are not intended to be disclosed. Procedures are also required to reduce this secondary damage.

Disclosure of the Invention It is an object of the present invention in view of the foregoing to provide a system capable of controlling a stolen device through digital broadcasting, an apparatus therefor, and a method therefor when theft occurs.

Another object of the present invention is to provide a system, an apparatus therefor, and a method therefor, which can accurately track a stolen user terminal by providing high-precision location information when theft occurs.

Theft control device and tracking system using digital multimedia data broadcasting according to a preferred embodiment of the present invention for achieving the above object, if the user terminal or theft of the host device equipped with the user terminal is detected, the user terminal Or a broadcast server for generating a theft control message for instructing theft operation for controlling a part or all of the functions of the host device equipped with the user terminal, and transmitting the generated theft control message through a broadcast signal; And receiving the user terminal to perform the theft operation according to the received theft control message.

The anti-theft control message may include an anti-theft operation indicator indicating to perform at least one of a plurality of anti-theft operations set according to an identifier of the user terminal and a device type of a user terminal or a host device equipped with the user terminal.

In particular, the theft operation indicator may instruct the user terminal to perform the theft operation sequentially or conditionally.

In this case, the broadcast server may include correction information for correcting GPS position information according to TPEG (Transport Protocol Expert Group (TPEG) format) of differential global positioning system (DGPS) information including position information and correction information of a reference station and a virtual reference station. A differential GPS-information (DGI) message may be broadcast.

Then, the user terminal may continuously receive the broadcast, and if the user terminal detects theft, the user terminal notifies of the occurrence of theft to the broadcast server and at the same time a preset occurrence of theft generation message indicating the current location of the user Alternatively, the current position may be calculated by transmitting DGPS information from the DGI message and correcting GPS position information received using the extracted DGPS information.

In addition, when the broadcast server receives the theft generation message, the broadcast server may broadcast theft information message including the identifier identifying the stolen user device and the location information of the stolen user device.

The anti-theft device control and tracking system according to an embodiment of the present invention, the terminal for tracking to extract the location information of the user device from the theft information message, and outputs the location information of the extracted user device; It may further include.

The DGPS message is divided into a large region, a middle region, or a small region according to the accuracy determined according to the number of reference stations used and the method of generating the correction information when the correction information of the virtual reference station is generated, and the size of the region. It further has a regional level level, and further includes regional information that is divided according to the regional level, and regional information that is information indicating a reference station and a virtual reference station belonging to the divided regional area.

In this case, the user terminal may correct the GPS location information received at the current location by varying the number of the reference station and the virtual reference station where the correction information is used according to the accuracy of the correction information of at least one adjacent virtual reference station. Can be.

An apparatus for controlling and tracking an anti-theft device using digital multimedia data broadcasting according to an embodiment of the present invention for achieving the above object includes a broadcast signal receiving unit for receiving a broadcast signal, and the received broadcast signal. And a control unit for extracting a theft control message for instructing an operation that may be taken when the user terminal or the host device on which the user terminal is mounted is stolen, and performing the theft operation according to the extracted theft control message.

Here, the theft control message includes an identifier of the user terminal and a theft operation indicator for instructing to perform at least one of a plurality of theft operations of a user terminal or a host device equipped with the user terminal.

In addition, the theft operation indicator may instruct the user terminal to sequentially perform the theft operation, or conditionally.

The apparatus for controlling and tracking an anti-theft device according to the present invention further includes a communication unit for communication, wherein the broadcast signal receiving unit receives a DGI message including DGPS information from a broadcast server, and the control unit receives the DGPS information. Calculates the current position by correcting the received GPS position information, and if theft is detected, a theft occurrence message notifying the occurrence of theft and continuously indicating the current position of the user continuously to the broadcast server through the communication unit. Can be sent.

A method for controlling and tracking a stolen device using digital multimedia data broadcasting according to a preferred embodiment of the present invention for achieving the above object, the broadcast server to prevent theft of the user terminal or the host device equipped with the user terminal If detected, generating a theft control message for indicating an action that can be taken when the user terminal or a host device equipped with the user terminal is stolen, and transmitting the generated theft control message through a broadcast signal; Receiving the theft control message and performing theft operation according to the received theft control message.

Here, the theft control message includes an identifier of the user terminal and a theft operation indicator for instructing to perform at least one of a plurality of theft operations of a user terminal or a host device equipped with the user terminal.

In particular, the theft operation indicator may instruct the user terminal to perform the theft operation sequentially or conditionally.

According to the present invention, when theft occurs, by controlling the user terminal or the host apparatus equipped with the user terminal through digital broadcasting, it is easy to recover the user terminal or the host apparatus equipped with the user terminal and protect the privacy of the user. can do.

In addition, since the user terminal can be tracked through the precise location information, the stolen user terminal or the host device equipped with the user terminal can be easily recovered.

1 is a diagram illustrating a message transmitted through a digital broadcast channel according to an embodiment of the present invention;
2 is a diagram for explaining a theft control and tracking system according to an embodiment of the present invention;
3 is a block diagram for explaining a configuration of a broadcast server according to an embodiment of the present invention;
4 is a block diagram illustrating a configuration of a user terminal according to an embodiment of the present invention;
5 is a view for explaining a method of generating new correction information using a plurality of reference stations or a virtual reference station according to an embodiment of the present invention;
6 is a block diagram illustrating a configuration of a tracking terminal according to an embodiment of the present invention;
7 is a flowchart illustrating a method of providing location information according to an embodiment of the present invention;
8 is a flowchart illustrating a method of providing location information of a broadcast server according to an embodiment of the present invention;
9 is a flowchart illustrating a method of providing location information of a user terminal according to an embodiment of the present invention;
10 is a flowchart for explaining a location tracking method according to an embodiment of the present invention;
11 is a flowchart illustrating a location tracking method of a user terminal according to an embodiment of the present invention;
12 is a flowchart illustrating a location tracking method of a broadcast server according to an embodiment of the present invention;
13 is a flowchart illustrating a location tracking method of a tracking terminal according to an embodiment of the present invention;
14 is a screen example for explaining a location tracking method of a tracking terminal according to an embodiment of the present invention;
15 is a flowchart for explaining a stolen terminal control method according to an embodiment of the present invention;
16 is a flowchart illustrating a method for controlling a stolen terminal of a broadcast server according to an embodiment of the present invention; And
17 is a flowchart illustrating a method for controlling a stolen terminal of a user terminal according to an embodiment of the present invention.

Prior to the detailed description of the present invention, the terms or words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning, and the inventor may designate his own invention in the best way It should be construed in accordance with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept of a term to describe it. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that like elements are denoted by like reference numerals as much as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically shown, and the size of each element does not entirely reflect the actual size.

In the embodiment of the present invention, the digital broadcasting or the digital multimedia broadcasting may be DMB (Digital Multimedia Broadcasting), DVB-H (Digital Video Broadcasting-Handheld), MediaFLO Digital Multimedia Broadcasting) will be described as an example. However, those skilled in the art will understand that the broadcast of the present invention can be applied to various types of digital broadcasting or digital multimedia broadcasting.

1 is a diagram illustrating a message transmitted through a digital broadcast channel according to an embodiment of the present invention.

Referring to FIG. 1, various types of Transport Protocol Expert Group (TPEG) messages 10 may be transmitted through a broadcast channel, and one TPEG message has a structure including several types of containers. The high-precision positioning information (DGI, Differential GPS-information, hereinafter abbreviated as "high precision positioning information" or "DGI") message 20 according to an embodiment of the present invention is a kind of TPEG message. The DGI message 20 provides DGPS information for a device capable of receiving a TPEG message of a digital multimedia broadcasting channel. Hereinafter, the "DGPS information" is transmitted through the DGI message 20 in the TPEG format, and collectively refers to various kinds of information used to correct the GPS location information according to the embodiment of the present invention.

Basically, the calling party (broadcasting server) may transmit the DGI message 20 including the DGPS information. Then, the receiving side (user terminal) can receive the DGI message 20, and correct the GPS position information using the GPS satellites through the DGPS information of the DGI message 20 to obtain more accurate position information.

As such, the DGI message 20 including the DGPS information includes a message management container 21 and an event container 23. The message management container 21 stores information for managing the DGI message 20 including the DGPS information. The event container 23 stores the DGPS information. Each of these containers 21 and 23 will be described in more detail.

The message management container 21 is for providing information for managing the DGI message 20 at the transmitting side or the receiving side of the DGI message. To this end, the message management container 21 may include a message identifier (MID), a version number (VER, Version Number), a message generation time (MGT), a start time (STA), a start time, and an end time. (STO, Stop Time), Message Expiry Time (MET), and optionally, Cross Reference Information (CRI).

The message management container 21 may be encoded in a structure as shown in Table 1 below.

<DGI_message>: =
<intunli> (mid),: Message ID
<intunti> (ver),: Version number
<intunli>: the length of the message in bytes
<bitswitch> (selector),: message element
if (selector = xxxxxxx1) <time_t>,: message generation time (MGT)
if (selector = xxxxxx1x) <time_t>,: message start time (STA)
if (selector = xxxxx1xx) <time_t>,: message end time (STO)
if (selector = xxxx1xxx) <time_t>,: message destruction time (MET)
if (selector = xxx1xxxx) <intunlo>,: Unused (Reserved for future use)
if (selector = xx1xxxxx) <intunlo>,: Reserved for future use
if (selector = x1xxxxxx) <intunlo>,: Unused (Reserved for future use)
if (selector = 1xxxxxxx) < DGI_components &gt;,&quot; high precision positioning information message component

As shown in Table 1, the message management container 21 includes a message identifier and a version number. The receiving side (user terminal to be described below, etc.) identifies the DGI message 20 of any one of the plurality of messages through the message identifier mid, and (identifies the DGI message 20 of the plurality of TPEG messages). And identifying one of the plurality of DGI messages 20. The version number ver identifies the number of DGI messages 20 related to one DGPS information. For example, when one DGPS information is composed of three DGI messages 20, the three DGI messages 20 have the same identifier mid, and the version numbers ver may be sequentially assigned. For example, when the capacity of the DGPS information is large, one DGPS information may be transmitted to three DGI messages ver 0, 1, 2.

In addition, the message management container 21 includes a number of bytes following the length indicator, a message elements supplied, a message generation time (MGT), a message start time (STA), and a message. End time (STO) and message destruction time (MET).

The message identifier (MID) is an identifier for a message related to one DGPS information in the service component. The version number (VER) means a sequential number for identifying consecutive DGI messages with the same message identifier. The message generation time (MGT) is a date and time stamp records the date and time the DGI message 20 was actually generated, and is used for the purpose of managing the DGI message 20 at the DGI message transmission side. The message start time (STA) describes the time at which an event related to the DGI message 20 enters a certain state. The Start Time (STA) may indicate the date that it has already entered or is scheduled to enter in the future. The end time (STO) represents the time when an event related to the DGI message 20 is released from a certain state. This end time (STO) may indicate the date and time that has already departed or is scheduled to depart. The message discard time MET represents the date and time when the validity of the DGI message 20 is lost. That is, it indicates the date and time when the DGI message 20 is deleted. The receiving side may delete the DGI message 20 according to the message discard time MET.

The event container 23 is for delivering DGPS information to a receiving side receiving the DGI message 20. The description of the DGI message 20 in the event container 23 follows a hierarchical structure. This is to ensure compatibility with the terminal (user terminal) of the receiving side when there is an extension of the standard and the addition of a component. The top class defined by the event container 23 is composed of n components, and future class addition or subclass extension can be achieved only by adding component identifiers. The event container 23 basically stores data related to a reference station or a virtual reference station and data related to correction information. The information related to the reference station or the virtual reference station basically includes the position information of the reference station or the virtual reference station. Further, the data related to the correction information includes correction information mapped to the reference station or the virtual reference station. The event container 23 further includes the accuracy of the correction information of the reference station or the virtual reference station and the regional information. This will be described in more detail below.

2 is a view for explaining the theft device control and tracking system according to an embodiment of the present invention.

2, a system according to an embodiment of the present invention includes a plurality of reference stations 100, a collection server 200, a service server 300, a broadcast server 400, a broadcast transmitter 500, and a user terminal. 600 and tracking terminal 700. In addition, reference numeral 101 denotes a GPS satellite, reference numeral 601 denotes a host device 601 equipped with a user terminal 600, and reference numeral 701 denotes a tracking vehicle equipped with a tracking terminal 700.

The reference station 100 receives GPS location information transmitted from the GPS satellites 101 through a plurality of installed GPS antennas. Then, the reference station 100 generates correction information using GPS information. Here, the correction information typically includes a pseudo range correction (PRC). The reference station 100 calculates a difference between the geometric distance from each GPS satellite 101 and the pseudo distance recorded in the C / A code data, and this difference becomes a pseudo distance correction value (PRC). In addition, the correction information may include a range rate correction (RRC). RRC is the adjustment value of the pseudorange correction value based on the prediction rate of the PRC and changes over time. The RRC is a calculated value that should be reflected in the PRC at a certain time, thereby increasing the effectiveness of the PRC over time. Various other factors and parameters may be included in the correction information, and basically all of the factors and parameters according to the RTCM standard may be included. When the correction information is generated, the reference station 100 transmits the generated correction information to the collection server 200.

The collection server 200 is for collecting correction information from a plurality of reference stations 100. [ The collection server 200 collects the correction information of each of the plurality of reference stations 100 at a time through a dedicated line connected to the plurality of reference stations 100, and stores each reference station 100 and each of the reference stations 100. The correction information is provided to the service server 300 through a dedicated line. Here, the dedicated line is generally referred to as an Internet line. Also, the collection server 200 is preferably an " Ntrip server ".

The service server 300 generates correction information of the plurality of virtual reference stations through the reference station 100 and correction information mapped thereto. The correction information of the virtual reference station can be obtained according to the position area, the state space area and the measurement area method. The position area method calculates position information based on a single reference station using a plurality of reference station correction information, and calculates an average value of the calculated position information. This method is simple, but it can be less accurate than other methods. In the state space area method, the error is modeled for each error factor using the raw data of the reference station, and the correction information of the virtual reference station is generated using the error. The factors of the GPS position information are structurally the satellite time error, the satellite position error, the ionospheric and convective refraction, the receiver noise, the multipath, and the geometric error, , And other errors due to selective availability (SA). The state space domain approach considers all of these factors. This method has high accuracy but high computational complexity. The measurement area method is a method of calculating correction information of a virtual reference station using correction information of a plurality of reference stations. Representative examples include an inverse distance weighting method and a multiple linear regression method. In addition, the service server 300 may use at least one reference station 100 when calculating the correction information of the virtual reference station, and the accuracy thereof increases when using a large number of reference stations 100. As described above, the service server 300 generates correction information of the virtual reference station, and then provides location information and correction information corresponding to each reference station 100, and location information and correction information corresponding to each virtual reference station. send. In the case of the virtual reference station, when generating correction information of the virtual reference station, information on the number and method of the used reference station is transmitted together. The service server 300 may be a Regional Area Augmentation System (RAAS) server.

The broadcast server 400 receives position information and correction information corresponding to each reference station 100 transmitted by the service server 300, position information and correction information corresponding to the virtual reference station, and receives DGPS information including these. Encoded in a DGI message. Such a promotion message may be included in the data broadcast signal and provided to various types of user terminals 600 through the broadcast transmitter 500. The user terminal 600 may basically receive GPS location information from the GPS satellite 101. Accordingly, the user terminal 600 may correct the received GPS location information from the GPS satellites using the DGPS information, and may provide more accurate location information.

According to an aspect of the present invention, the user terminal 600 may be various kinds of devices satisfying three requirements for theft location tracking. First, the user terminal 600 should be able to receive digital broadcasts such as DMB, second, should be able to receive GPS location information from GPS satellites, and third, the ability to transmit its current location information (capability) Must have Preferred embodiments may be mobile communication terminals, navigation devices, cameras, and the like. In addition, according to another aspect of the present invention, the user terminal 600 may be mounted on the host device 601 to perform functions and operations related to embodiments of the present invention. That is, the user terminal 600 that satisfies the above three requirements may be mounted in the host device 601 such as a watch, a safe, a vehicle, or the like to control some or all of the functions of the host device 601.

First, if the user terminal 600 detects theft, the user terminal 600 transmits a theft generation message indicating that theft has occurred according to a preset period. The theft generation message includes an identifier for distinguishing the user terminal 600 from other terminals and a current location of the user terminal 600. When theft occurs, the location of the user terminal 600 will be continuously changed, so the theft generation message notifies that the theft has occurred and informs the current location of the user terminal 600 which is constantly changing. The current position is a correction of the GPS position information received from the GPS satellites using the DGPS information. Therefore, the broadcast server 400 may provide location information more accurate than the existing GPS location information.

On the other hand, when the user terminal 600 receives the theft control message transmitted by the broadcast method from the broadcast server 400, in addition to transmitting the theft generation message, it may perform theft operation according to theft. For example, if the host device 601 is a vehicle, the user terminal 600 may be a device mounted in the vehicle. In such a case, the theft operation may be an operation of stopping the engine of the vehicle. In addition, assuming that the user terminal 600 is part of a locking device attached to the digital safe (host device), the theft operation may not be opened even if a valid password is input. In addition, assuming that the user terminal 600 is a mobile communication terminal, the theft operation may be an operation for receiving a call but not making a call.

When the broadcast server 400 receives the theft generation message of the user terminal 600, the broadcast server 400 specifies the user terminal 600 through the identifier of the received theft generation message, and recognizes that the specified user terminal 600 has been stolen. Accordingly, the broadcast server 400 generates the theft information message and broadcasts the generated theft information message. The theft information message includes an identifier of the stolen user terminal 600 and a current location of the user terminal 600. In particular, the broadcast server 400 may continuously receive the theft occurrence message and continuously broadcast the theft information message that reflects the current location of the user terminal 600 which is constantly changing according to the received theft occurrence message. .

In addition, the broadcast server 400 may selectively generate theft control message and transmit it to the user terminal 600. Theft control message is for instructing the operation of the user terminal 600 in response to theft.

The tracking terminal 700 is for tracking the stolen user terminal 600, and the user of the tracking terminal 700 may be a police officer, an insurance company, a security company, or the like. The illustrated tracking vehicle 701 is a vehicle equipped with a tracking terminal 700. Hereinafter, in order to clarify the gist of the invention, it will be described on the assumption that the tracking terminal 700 is a device used by the security company. The tracking terminal 700 stores a member list including identifiers of the user terminal 600 of users subscribed to the security company service. Therefore, when the tracking terminal 700 receives the broadcasted theft information message, if the user information of the user terminal 600 subscribed to the service matching the identifier of the received theft information message in the member list, theft information message Outputs the current location of the user terminal (600). Since the theft information message is continuously broadcast, the tracking terminal 700 receiving the stolen information message can continuously display the current location of the user terminal 600 that is changed. Therefore, the user of the tracking terminal 700 may retrieve the user terminal 600 by tracking the location of the user terminal 600. According to the exemplary embodiment of the present invention, when the user terminal 600 is stolen, the current location of the user terminal 600 may be continuously broadcast, so that a user of the plurality of tracking terminals 700 may simultaneously use the user terminal 600. To track the location of the.

3 is a block diagram illustrating a configuration of a broadcast server according to an embodiment of the present invention.

Referring to FIG. 3, the broadcast server 400 includes a communication module 410, a correction information module 420, and a theft information module 430.

The communication module 410 is means for transmitting and receiving data of each kind according to the embodiment of the present invention. The communication module 410 receives information necessary for generating the DGPS information according to an embodiment of the present invention from the service server 300 and transmits it to the correction information module 420. The communication module 410 may receive location information and correction information corresponding to each reference station 100, and location information and correction information corresponding to the virtual reference station from the service server 300. In this case, in the case of the virtual reference station, when generating correction information of the virtual reference station, information about the number and method of the reference station used may be received together. In addition, the communication module 410 may receive a theft generation message from the user terminal 600. When theft generation message is received, theft generation message is transmitted to the communication module 430.

The communication module 410 receives the DGPS information encoded in the DGI message from the correction information module 420, and transmits the DGPS information to the broadcast transmitter 500, so that the broadcast transmitter 500 transmits the DGPS information to the user terminal 600 through the broadcast network. Can be. In addition, the communication module 410 may receive the theft information message from the theft information module 430 and transmit the stolen information message to the broadcast transmitter 500 so that the broadcast transmitter 500 transmits the broadcast terminal 500 to the tracking terminal 700 through the broadcast network. . In addition, the communication module 410 may receive the theft control message from the theft information module 430, and transmit the stolen control message to the broadcast transmitter 500 so that the broadcast transmitter 500 may transmit the broadcast control to the user terminal 700 through the broadcast network.

The correction information module 420 generates DGPS information by using the information received by the communication module 410. At this time, the DGPS information basically includes position information and correction information of each reference station and each virtual reference station. In particular, the DGPS information further includes a normalized accuracy according to the number and method of reference stations used for generating the correction information when generating the correction information of each virtual reference station. For example, the normalized accuracy may have a value from 0 to 1, and the higher the value, the higher the accuracy. Further, assuming that correction information of the virtual reference station can be generated based on 1 to 18 reference stations, when the correction information of the virtual reference station is generated based on one or two reference stations, the accuracy is 0.1. When the correction information of the virtual reference station is generated based on 17, 18 or 18 reference stations, the accuracy may be 0.9 and the accuracy of the reference station 100 may be 1. As described above, the correction information of the virtual reference station can be obtained according to the position domain, the state-space domain, and the measurement domain. In this case, The accuracy obtained according to the area method is the lowest, and the accuracy obtained according to the state space area method may be the highest. Also, the accuracy obtained according to the measurement area method is intermediate between the accuracy of the position area method and the state space area method. In the measurement area method, correction information of a virtual reference station can be obtained by an inverse distance weighting method, a polynomial linear regression method, and the accuracy according to the polynomial linear regression method is set to be higher than the accuracy according to the inverse distance weighting method. In this way, the accuracy of the correction information of the virtual reference station can be determined by at least one of the number of reference stations used when generating the correction information for the virtual reference station and the correction information generation method (or method) thereof.

In addition, the DGPS information may further include area information. The domain information is information indicating the reference station and the virtual reference station belonging to the region classified according to the domain level, by dividing the whole country into a plurality of domains according to the domain level. Here, the domain level can be a large area, a middle area, and a small area depending on the size of the area. That is, the domain information has a domain level classified into a large domain, a middle domain, or a small domain according to the size of the domain, and indicates a domain classified according to the domain level and a reference station and a virtual reference station belonging to each of the domain . For example, if the regional level is the large region, the nation is divided into Seoul, Gyeonggi Province, Chungcheong Province, Gyeongsang Province, Jeolla Province and Jeju Island. If the regional level is the middle region, , South Gyeonggi Province, Chungcheongbukdo, Chungcheongnamdo, and so on. In addition, if the zone level is a small region, it means to divide the whole country more precisely, and to divide the nationwide region by each unit of Seoul. Thus, by dividing the region level, the region level depends on the size of the region. Therefore, the number of reference stations and virtual reference stations belonging to the large region is the largest, the number of virtual reference stations belonging to the middle region next is largest, The number of reference stations and virtual reference stations is the smallest. Therefore, according to the embodiment of the present invention, the accuracy of the correction information can be adjusted using this area information. That is, the user terminal 600 may belong to all of the zones classified according to the large-area, the mid-zone, and the small-zone in the current location. For example, if the current location of the user terminal 600 is located in Jeju City, it belongs to the Greater Power Zone, the Jeju Island, and belongs to the Jungcheong Station, the Northern District of Jeju, and the Small Area, belongs to the Jeju City. When the user terminal 600 corrects the current GPS position according to the correction information, the user terminal 600 may correct the current GPS position by referring to the regional information. For example, if the accuracy is low, the current GPS position is corrected using the correction information of the reference station belonging to the large area and the virtual reference station at the current position. If the accuracy is high, The current GPS position can be corrected using only the correction information of the station. Then, the correction information module 420 encodes the DGPS information including the above-described information into a DGI message according to a Transport Protocol Expert Group (TPEG) format. As described above, the DGI message includes a message management container 21 and an event container 23. The above-described DGPS information may be stored in the event container 23 and transmitted.

The theft information module 430 generates a theft information message based on the theft occurrence message sent by the user terminal 600, and transmits the theft information message through the communication module 410. Theft information message may be broadcast through the broadcast transmitter 500.

The theft generation message includes an identifier for distinguishing the user terminal 600 from other terminals and a current location of the user terminal 600. When theft occurs, the location of the user terminal 600 will be continuously changed, so the theft generation message notifies that the theft has occurred and informs the current location of the user terminal 600 which is constantly changing. Theft information module 430 receives the theft generation message of the user terminal 600 through the communication module 410, specifies the user terminal 600 through the identifier of the received theft generation message, and specifies the specified user terminal ( Recognize that 600 has been stolen. Accordingly, theft information module 430 generates a stolen information message. The theft information message includes an identifier of the stolen user terminal 600 and a current location of the user terminal 600. Theft information module 430 transfers the generated theft information message to the communication module 410 so that the theft information message is broadcast.

In addition, when theft information module 430 recognizes theft, the theft information module 430 may generate a theft control message and transmit the generated theft control message to the user terminal 600 through the communication module 410. The theft control message is for instructing the operation of the user terminal 600 according to the user terminal 600 or the type of the host device on which the user terminal 600 is mounted. For example, if the user terminal 600 is a device mounted on a vehicle, theft operation may be an operation of stopping the engine of the vehicle. In addition, assuming that the user terminal 600 is a lock of the digital safe, the theft operation may not be opened even if a valid password is input. In addition, assuming that the user terminal 600 is a mobile communication terminal, the theft operation means that the call can be received but not the call.

4 is a block diagram illustrating a configuration of a user terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the user terminal 600 may basically be a standalone device operating by itself. This can be exemplified by a mobile communication terminal, a smart phone, and the like. In addition, the user terminal 600 may be a module mounted and operated in the host device 601. Typically, when the host device 601 is a vehicle, the host device 601 may be an electronic control unit (ECU) of the vehicle or a device connected to the ECU to control the ECU. Alternatively, the user terminal 600 may be a navigation mounted in a vehicle, and the host device 601 may be a vehicle. The user terminal 600 includes a broadcast signal receiver 610, a location information receiver 620, a communicator 630, a theft detector 640, and a controller 650.

The broadcast signal receiver 610 is for receiving a data broadcast signal. The data broadcast signal includes a DGI message generated by the broadcast server 400 encoding DGPS information. The broadcast signal receiver 610 extracts a DGI message from the broadcast signal, and decodes the extracted DGI message to extract DGPS information. Here, the DGPS information basically includes position information and correction information of each reference station and each virtual reference station. Further, the DGPS information further includes a normalized accuracy according to the number and the method of the reference station used for generating the correction information when generating the correction information of each virtual reference station. The DGPS information further includes area information. The broadcast signal receiver 610 transfers the extracted DGPS information to the controller 650. In addition, the broadcast signal receiver 610 may receive the theft control message. When the broadcast signal receiver 610 receives the theft control message, the broadcast signal receiver 610 transmits the received theft control message to the controller 650.

The location information receiver 620 is for receiving GPS location information from a plurality of GPS satellites. When the location information receiver 620 receives the GPS location information, the location information receiver 620 transfers the location information receiver 620 to the controller 650.

The communication unit 630 is for transmitting the theft generation message. The communication unit 630 receives the theft generation message from the control unit 650 and transmits the theft generation message to the broadcast server 600.

Theft detecting unit 640 detects the theft of the user terminal 640 according to the theft detection mechanism according to the device type of the user terminal 600 or the host device 601. For example, if the user terminal 600 is a vehicle, that is, a device mounted on the host device 601, the theft detecting unit 640 does not enter or start the vehicle through an effective means such as a key, The vehicle door is opened, or the starter is damaged, and the start of the vehicle is detected, and it is determined that theft has occurred. In addition, in the case of a mobile communication terminal, it is determined that a theft situation occurs when there is an error of a predetermined number of times or more. As described above, the theft detecting unit 640 determines the theft situation according to the theft detection mechanism for detecting the theft situation for each device, and notifies the control unit 650 if it is determined that the theft situation has occurred.

The controller 650 may basically correct the GPS location information by using the received DGPS information. In particular, the controller 650 may vary the number of reference stations and virtual reference stations for which correction information is used according to the accuracy of correction information of at least one virtual reference station adjacent to the current user terminal 600 at the current location. Correct the GPS location information received. For example, if the value of the accuracy of the at least one adjacent virtual reference station in the order closest to the current position is higher than the preset reference, the controller 650 may correct the correction information of the one virtual reference station closest to the current user terminal 600. Use only to correct GPS location information. On the other hand, based on at least one virtual reference station in the order nearest to the current position of the user terminal 600, if the accuracy of the correction information of the virtual reference station around the current user terminal 600 is lower than the preset reference, The controller 650 may correct the GPS location information by using the correction information of the plurality of virtual reference stations and the reference station 100 in the vicinity by varying the number of the reference station and the virtual reference station according to the accuracy thereof. . When the GPS location information is corrected, the control unit 650 uses correction information of a greater number of reference stations and virtual reference stations as the accuracy is lower. When the controller 650 confirms the accuracy of the correction information of the adjacent virtual reference station for correction, the number of adjacent virtual reference stations referred to may vary depending on the setting. Also, when the number of reference stations is different, the value of accuracy as a reference may also vary depending on the setting.

On the other hand, the criterion for varying the number of reference stations may be the regional level according to regional information. The controller 650 refers to the regional information, and as the accuracy is lower, the GPS position information is corrected using the correction information of the reference station 100 and the virtual reference station belonging to the large area, and the higher the accuracy, the reference belonging to the subregion. GPS location information may be corrected using the correction information of the station 100 and the virtual reference station.

In addition, when the controller 650 corrects the GPS location information by using the plurality of virtual reference stations and the correction information of the reference station 100, the distance from the current location to the reference station 100 or the virtual reference station, According to the accuracy of the correction information of the reference station 100 or the virtual reference station, weights may be generated to generate new correction information, and the GPS position information may be corrected using the newly generated correction information.

For example, FIG. 5 is a diagram for describing a method of generating new correction information using a plurality of reference stations or a virtual reference station, according to an embodiment of the present invention. Referring to FIG. Represents a first virtual reference station and a second virtual reference station, the user terminal 600 is a GPS position using the correction information of the reference station 100, the first virtual reference station 110 and the second virtual reference station 130. Assume that you correct the information. At this time, it is assumed that the correction information of the reference station 100, the first virtual reference station 110, and the second virtual reference station 130 are K, L, and M, respectively. In addition, it is assumed that the accuracy of the reference station 100, the first virtual reference station 110, and the second virtual reference station 130 is 1, 0.7, and 0.3, respectively. In addition, it is assumed that the distances from the user terminal 600 to the reference station 100, the first virtual reference station 110, and the second virtual reference station 130 are a, b, and c, respectively. Then, the newly generated correction information is expressed by Equation (1) below.

As shown in Equation (1), the newly generated correction information has a higher weight and a higher weight in proportion to the accuracy. As described above, the controller 650 generates new correction information by using a larger number of virtual reference stations or reference stations 100 according to the accuracy of the virtual reference station located near the current position, and uses the same. By correcting the GPS location information, more accurate GPS location information can be provided. In particular, the present invention can provide GPS position information that maintains a certain level of accuracy or more.

On the other hand, the controller 650 may use the regional information. That is, the controller 650 may use the reference station and the virtual reference station according to each regional level according to the accuracy of the correction information of the virtual reference station at the position to which the current user terminal 600 belongs. For example, based on the location of the current user terminal 600, 20 reference stations and virtual reference stations exist in a large area, and 12 reference stations and virtual reference stations exist in a central area according to a regional level. It is assumed that there are three reference stations and virtual reference stations in the domain. Then, when the accuracy is high based on the at least one adjacent reference station according to the accuracy, the control unit 650 uses the three reference stations and the virtual reference station included in the sub-region to which the user terminal 600 belongs to correct the correction. Can be done. On the contrary, if the accuracy of correction information of at least one adjacent reference station is low, the controller 650 may perform correction using 20 reference stations and virtual reference stations included in a large area to which the user terminal 600 belongs. have. As described above, the control unit 650 of the user terminal 600, by varying the regional level according to the accuracy of the correction information of the adjacent reference station, by using the correction information of the reference station and the virtual reference station belonging to the corresponding regional level In this case, the GPS position information received at the current position can be corrected.

If theft detection unit 640 detects theft, the controller 650 generates a theft generation message indicating that theft has occurred, and transmits the generated theft generation message through the communication unit 630 according to a preset period. . The theft generation message includes an identifier for distinguishing the user terminal 600 from other terminals and a current location of the user terminal 600. In a stolen situation, the location of the user terminal 600 may be continuously changed, and the current location of the user terminal 600 may be notified continuously. As described above, the controller 650 corrects the GPS position information received from the position information receiver 620 using the DGPS information to generate such a current position. Therefore, it is possible to provide more accurate location information than the existing GPS location information.

The controller 650 may perform theft operation when the broadcast server 400 receives the theft control message transmitted through the broadcast transmitter 500 in a broadcast manner. In this case, the controller 650 may extract the theft control message from the broadcast signal received by the broadcast signal receiver 610. The theft control message is for instructing the user terminal 600 or an operation that may be taken when the host apparatus 601 equipped with the user terminal 600 is stolen, wherein the theft operation is the user terminal 600 itself or the host. According to the device type of the device 601, the operation is performed when theft occurs, and the controller 650 controls some or all of the functions of the user terminal 600 or the host device 601 by theft operation. For example, if the user terminal 600 is a device mounted in a vehicle, the controller 650 may stop the engine of the vehicle. In addition, assuming that the user terminal 600 is a lock device of the digital safe, the control unit 650 may not open even if a valid password is input by theft operation. In addition, assuming that the user terminal 600 is a mobile communication terminal, the control unit 650 may control to receive a call in theft operation but not to make a call. On the other hand, the user terminal 600 according to an embodiment of the present invention, can representatively illustrate the navigation. However, the user terminal 600 may be various devices such as a mobile communication terminal, a PDA, a tablet PC, a smartphone, a digital camera, a device mounted on a digital safe, a device mounted on a vehicle, and the like, in addition to the navigation. Therefore, it will be understood by those skilled in the art that various theft operations may be performed according to the device type of the user terminal 600 or the host device 601 on which the user terminal is mounted.

6 is a block diagram illustrating a configuration of a tracking terminal according to an embodiment of the present invention.

Referring to FIG. 6, basically, the tracking terminal 700 performs location tracking on the user terminal 600 in which theft occurs, and can be used by a public institution or a private institution that provides a service for recovering the location. Device. In this document, the described service means a service provided by the above-mentioned public institution or private institution. The tracking terminal 700 includes a broadcast signal receiving unit 710, a storage unit 720, an output unit 730, and a control unit 740.

The broadcast signal receiving unit 710 is for receiving a data broadcast signal. The data broadcast signal includes the theft information message transmitted by the broadcast server 400. The broadcast signal receiver 610 extracts the theft information message from the broadcast signal and delivers it to the control unit 740.

The storage unit 720 stores a member list including the identifiers of the user terminals 600 of the users subscribed to the service. In addition, the storage unit 720 stores article information related to the user terminal 600 corresponding to the identifier. In addition, the article information is an image file showing the appearance of the user terminal 600 itself or the host device equipped with the user terminal 600, and the user terminal 600 itself or the host device equipped with the user terminal 600 will be described. Contains a text file. In addition, the article information may further include other necessary information, such as handling precautions. In addition, the storage unit 720 may store a digital map or the like necessary for tracking the stolen user terminal 600.

The output unit 730 outputs various kinds of information for tracking, and may visually output the location of the stolen user terminal 600. In this case, the output unit 730 may be a display device.

When the control unit 740 receives the theft information message from the broadcast signal receiving unit 710, an identifier of the user terminal 600 matching the identifier of the theft information message received in the member list stored in the storage unit 720 exists. Determine. At this time, if there is a matching identifier, the control unit 740 extracts the current position of the user terminal 600 from the theft information message, and outputs it through the output unit 730. Since the theft information message is continuously broadcasted, the control unit 740 continuously receives it through the broadcast signal receiving unit 710 to continuously maintain the current position of the user terminal 600 which is changed through the output unit 730. Can be displayed as Therefore, the user of the tracking terminal 700 can continuously track and retrieve the location of the user terminal 600.

Hereinafter, a location tracking method according to an embodiment of the present invention will be described. The performance of such location tracking depends on the precision of the location information. Therefore, the high-precision location information providing method provided according to an embodiment of the present invention will be described first, and the location tracking method using the location information will be described.

7 is a flowchart illustrating a method of providing location information according to an embodiment of the present invention.

Referring to FIG. 7, in step S705, the reference station 100 receives GPS location information transmitted from the GPS satellite 101 through a plurality of installed GPS antennas, and in step S710 generates correction information using the GPS location information. do. Subsequently, the reference station 100 transmits the correction information generated in step S715 to the collection server 200.

Accordingly, the collection server 200 collects correction information of each of the plurality of reference stations 100 at once through a dedicated line connected to the plurality of reference stations 100, and corrects each of the reference stations 100 in step S720. Information is provided to the service server 300 through a dedicated line. At this time, the correction information is mapped to each reference station 100 and transmitted.

The service server 300 receiving the reference information of each reference station 100 and each reference station 100 receives the correction information of the plurality of virtual reference stations through the reference station 100 and the correction information mapped thereto in step S725. Create After the service server 300 generates the correction information of the virtual reference station, the position information (position of the reference station) and correction information corresponding to each reference station 100 and the position information corresponding to each virtual reference station in step S730. Transmit the calibration information (the location of the virtual reference station). At this time, in the case of the virtual reference station, when generating the correction information of the virtual reference station, information on the number and method of the used reference station 100 are transmitted together.

In operation S735, the broadcast server 400 receiving the above-described information from the service server 300 generates DGPS information and encodes the generated DGPS information into a DGI message. That is, a DGI message is generated. Then, the service server 300 delivers this DGI message to the broadcast transmitter 500 in step S740. Then, the broadcast transmitter 500 broadcasts the DGI message to the broadcast signal in step S745. Then, the user terminal 600 may receive such a broadcast. The user terminal 600 extracts the DGI message from the broadcast signal in step S750, and corrects the GPS position information at the current position by using the DGPS information of the DGI message. As such, whenever the user terminal 600 needs to provide the location information, the user terminal 600 corrects the GPS location information by using the DGPS information, and the corrected GPS location information may be transmitted to the current location by being included in the theft generation message. . This will be described in more detail below.

8 is a flowchart illustrating a method of providing location information of a broadcast server according to an embodiment of the present invention.

Referring to FIG. 8, the broadcast server 400 receives information necessary to generate DGPS information according to an embodiment of the present invention from the service server 300 in step S810. That is, the correction information receiver 941 receives the position information and correction information corresponding to each reference station 100, the position information and correction information corresponding to the virtual reference station from the service server 300. In particular, in the case of the virtual reference station, when generating the correction information of the virtual reference station, information on the number and method of the reference station used is also received.

Then, the broadcast server 400 generates the DGPS information by using the information received in step S820. The generated DGPS information basically includes position information and correction information of each reference station 100 and each virtual reference station. In particular, the DGPS information further includes a normalized accuracy according to the number and method of reference stations used for generating the correction information when generating the correction information of each virtual reference station. Further, the DGPS information further includes area information.

Then, the broadcast server 400 encodes the DGPS information including the above-described information in step S830 into a DGI message according to a TPEG (Transport Protocol Expert Group) format. As described above, the DGI message includes a message management container 21 and an event container 23. The above-described DGPS information may be stored in the event container 23.

Subsequently, the broadcast server 400 transmits the DGI message encoded with the DGPS information to the broadcast transmitter 500 in step S840. Then, the broadcast transmitter 500 may load the DGI message on the broadcast signal and provide the broadcast signal to the user terminal 600 through the broadcast network.

9 is a flowchart illustrating a method of providing location information of a user terminal according to an embodiment of the present invention.

Referring to FIG. 9, the user terminal 600 receives a broadcast signal in step S910. The broadcast signal includes a DGI message generated by the broadcast server 400 by encoding DGPS information.

Next, the user terminal 600 extracts a DGI message from the broadcast signal received in step S920. Subsequently, the user terminal 600 decodes the previously extracted DGI message in operation S930 and extracts DGPS information. Here, the DGPS information basically includes position information and correction information of each reference station and each virtual reference station. Further, the DGPS information further includes a normalized accuracy according to the number and the method of the reference station used for generating the correction information when generating the correction information of each virtual reference station. The DGPS information further includes area information.

The user terminal 600 corrects the GPS location information by using the DGPS information received in operation S940. In this case, the user terminal 600 corrects the GPS location information received at the current location by varying the number of the reference station and the virtual reference station where the correction information is used, according to the accuracy of the correction information of the virtual reference station. For example, if the value of the accuracy is high, the position information correction unit 967 corrects the GPS position information using only correction information of one virtual reference station nearest to the current user terminal 600. On the other hand, if the accuracy of the correction information of the virtual reference station around the current user terminal 600 is low, using the correction information of the plurality of virtual reference station and the reference station 100 in the vicinity, GPS location information can be corrected. have. In particular, with reference to the regional information, the lower the accuracy, the GPS position information is corrected using the correction information of the reference station 100 and the virtual reference station belonging to the large region, and the higher the accuracy, the reference station belonging to the subregion (100). And GPS position information using the calibration information of the virtual reference station. On the other hand, when calibrating GPS location information using both the plurality of virtual reference stations and the correction information of the reference station 100, the distance from the current location to the reference station 100 or the virtual reference station, the reference station 100 Or according to the accuracy of the correction information of the virtual reference station, weights are generated to generate new correction information, and the GPS position information is corrected using the newly generated correction information. An example of the correction using such weight values has been described with reference to FIG.

Meanwhile, according to another exemplary embodiment, the user terminal 600 may set a reference level, generate new correction information according to the set reference, and correct the GPS location information. For example, even if the accuracy is somewhat lower, if the accuracy of the correction information of a specific virtual reference station exceeds a predetermined reference, the correction information of the reference station can be used as it is. Next, the user terminal 600 may generate the theft generation message by using the GPS position information corrected in operation S950 as the current position.

Next, the location tracking method of the stolen user terminal 600 using the precise location information as described above will be described.

10 is a flowchart illustrating a location tracking method according to an embodiment of the present invention. In FIG. 10, the messages transmitted by the broadcast server 400 are transmitted in a broadcast manner through the broadcast transmitter 500. This will be described as being broadcast by the broadcast server 400 for simplicity and clarity of explanation.

Referring to FIG. 10, if the user terminal 600 detects the theft generation, the user terminal 600 generates a theft generation message at step S1000. The theft generation message includes the identifier of the user terminal 600 and the current location of the user terminal 600. Here, the current position is the correction of the received GPS position information by using the correction information of the reference station 100 and the virtual reference station, as described above with reference to FIGS. 7 to 9.

The user terminal 600 transmits a theft generation message to the broadcast server 400 in step S1005.

The broadcast server 400 receiving the theft generation message specifies the user terminal 600 through the identifier of the received theft generation message, and recognizes that the specified user terminal 600 has been stolen. Accordingly, the broadcast server 400 generates the theft information message in step S1010. The theft information message includes an identifier of the stolen user terminal 600 and a current location of the user terminal 600. Then, the broadcast server 400 transmits the theft information message in a broadcast step S1015. Since the broadcast server 400 may continuously receive the theft occurrence message, the broadcast server 400 may continuously broadcast the theft information message reflecting the current location of the user terminal 600 which is constantly changing according to the received theft occurrence message. have.

The tracking terminal 700 may receive the theft information message through the broadcast signal reception. When the tracking terminal 700 receives the theft information message, it is determined whether there is an identifier of the user terminal 600 that matches the identifier of the received theft information message in the previously stored member list. Here, it is assumed that there is a matching identifier. Then, the tracking terminal 700 extracts the current location of the user terminal 600 from the theft information message, and outputs in step S1020. The tracking terminal 700 may continuously display the current location of the user terminal 600 that is changed by receiving the stolen information message that is continuously broadcast. Accordingly, the user of the tracking terminal 700 may continuously track the location of the user terminal 600 to recover the stolen user terminal 600.

11 is a flowchart illustrating a location tracking method of a user terminal according to an embodiment of the present invention.

Referring to FIG. 11, the user terminal 600 may detect theft in operation S1100. Theft detection may be detected based on different mechanisms according to device types of the user terminal 600. For example, if the user terminal 600 is a locking device such as a vehicle door or a safe, it may be determined as theft when the door or the safe door is opened by an external force, rather than the door or the safe door being opened using a valid key. As such, when theft is detected, the user terminal 600 calculates a current location in step S1105. The current position is calculated by correcting the received GPS position information using the correction information of the reference station 100 and the virtual reference station, as described above with reference to FIGS. 7 to 9.

When the current location is calculated, the user terminal 600 generates a theft generation message in step S1110. That is, the user terminal 600 stores the identifier and the current location of the user terminal 600 in the theft generation message. Then, the user terminal 600 transmits the theft generation message to the broadcast server 400 in step S1115. The user terminal 600 may continuously transmit the theft generation message at a predetermined cycle. In particular, the user terminal 600 may change the theft generation message transmission period according to the degree of change in the location of the user terminal 600. For example, if there is little change in location, the user terminal 600 may increase the transmission period of the theft generation message. If the location change is rapid, the user terminal 600 may shorten the transmission period of the theft generation message.

12 is a flowchart illustrating a location tracking method of a broadcast server according to an embodiment of the present invention.

The broadcast server 400 may receive a theft generation message in step S1200. The theft occurrence message includes the identifier and current location of the stolen user terminal 600. Upon receiving the theft generation message, the broadcast server 400 recognizes that the corresponding user terminal 600 has been stolen through the identifier of the theft generation message, and generates a theft information message in step S1205. The theft information message includes the identifier of the stolen user terminal 600 and the current location.

Then, the broadcast server 400 transmits the stolen information message in step S1210. In particular, when the period in which the broadcasting server 400 transmits the theft information message is shorter than the period in which the user terminal 600 transmits the theft generation message, the current position of the theft information message is included in the previously transmitted theft information message. Can be the current location.

On the other hand, the broadcast server 400 generates the theft control message in step S1215. Theft control message includes theft operation, and theft operation defines the operation of the user terminal 600 according to the type of the device during theft. Then, the broadcast server 200 transmits the theft control message in a broadcast in step S1220.

13 is a flowchart illustrating a location tracking method of a tracking terminal according to an embodiment of the present invention, and FIG. 14 is a screen example illustrating a location tracking method of a tracking terminal according to an embodiment of the present invention. 13 and 14, it is assumed that the user terminal 600 is a device installed in a vehicle that is a host device. In addition, it is assumed that the tracking terminal 700 in FIGS. 13 and 14 is a device used in a private agency, for example, a security company, that provides a service for recovering a location by performing a location tracking on the stolen user terminal 600. do.

The tracking terminal 700 receives a broadcast signal in step S1300. Then, the tracking terminal 700 extracts the theft information message transmitted by the broadcast server 400 from the broadcast signal in step S1305.

Subsequently, the tracking terminal 700 compares the identifier of the stolen information message with the previously stored member list in operation S1310 to determine whether the identifier of the stolen information message exists in the member list.

If, as a result of the determination, if the identifier of the theft information message exists in the member list, the process proceeds to step S1315, otherwise, the process ends in step S1320. The tracking terminal 700 outputs the current location from the theft information message in step S1315. In step S1315, the tracking terminal 700 may display the movement trace and the current location 1401 of the user terminal 600 on the digital map 1403. In addition, the article information on the user terminal 700, the image file showing the appearance of the user terminal 600 itself or the host device of the user terminal 600, the user terminal 600 itself or the user terminal 600 is mounted You can also display a text file that describes the host device. An example of such a screen is shown in FIG. 14. As shown, as the item information on the user terminal 700, the external image 1405 of the vehicle is displayed as an image file showing the external appearance of the vehicle that is the host device of the user terminal 600, the user terminal 600 is The vehicle number 1407, which is a text file describing the mounted host device, is also displayed. Accordingly, the host device of the user terminal 600 or the user terminal 600 may be tracked through the screen as shown in FIG. 14.

15 is a flowchart illustrating a method for controlling theft terminal according to an embodiment of the present invention.

Referring to FIG. 15, in operation S1500, the broadcast server 400 may recognize theft. According to an embodiment, the recognition of theft may be recognized when the user terminal 600 detects theft and transmits the theft generation message to the broadcast server 400. A process of transmitting the theft generation message to the broadcast server 400 by the user terminal 400 has been described above with reference to FIGS. 10 to 12. Meanwhile, the theft detection mechanism may not exist in the user terminal 600 or the host device 601 of the user terminal 600, or may not properly recognize theft due to sensitivity. An alternative embodiment that assumes this case assumes that the user of the user terminal 600 or the user of the user terminal 600 host device directly recognizes theft. In this alternative embodiment, a process is performed for self-protection of the user terminal 600 or the user terminal 600 device. A user may report theft by using a terminal (eg, a mobile communication terminal, a telephone, a desktop computer, a smartphone, a laptop, etc.) that is generally held. Accordingly, the broadcast server 400 may recognize the theft in operation S1500.

Upon recognizing the theft, the broadcast server 400 generates a theft control message in step S1505. The theft control message is for controlling the operation of the user terminal 600, the theft control message includes an identifier of the user terminal 600 and theft operation indicator for indicating the theft operation.

Table 2 below is for explaining the theft operation indicator according to an embodiment of the present invention.

Type of host device of user terminal or user terminal Theft behavior vehicle Action 1: Do not start even if there is a valid start operation
Action 2: generate an alarm
Action 3: emergency light flashing
Action 4: stop the engine digital camera Action 1: generate an alarm
Operation 2: No Shooting
Operation 3: Inability to view previously recorded data (image files)
Action 4: Unable to Delete Data
Action 5: Delete Specific Data clock Action 1: generate an alarm
Action 2: stop the clock Digital safe Action 1: Forced lock (will not open even with valid password entry)
Action 2: generate an alarm Smartphone Action 1: generate an alarm
Operation 2: Lock Wireless Networking
Action 3: lock only outgoing calls
Action 4: Print a Prompt Message (Direct Owner's Other Contacts)
Action 5: Sending Specific Data to Preset Data Backup Server
Action 6: Delete Specific Data

Referring to <Table 2>, a plurality of theft operations are defined according to the type of host device of the user terminal 600 or the user terminal 600. The theft operation indicator includes a type identifier indicating the type of the host device of the user terminal 600 or the user terminal 600 and a theft operation to be executed among the preset theft operations according to the type. For example, it is assumed that the type of host device of the user terminal 600 is a vehicle. Then, theft operation of the vehicle includes operations 1-4. Accordingly, the broadcast server 400 may select a type of the host device of the user terminal 600 or the user terminal 600 as a vehicle, and select at least one of operations 1 to 4 to generate the stolen operation indicator. The theft operation indicator allows the user terminal 600 to perform the selected theft operation.

In particular, the theft operation indicator may instruct the user terminal 600 to selectively perform theft operation according to a condition. For example, assuming that the stolen user terminal 600 is a smartphone, when the command for using the wireless connection is input to the stolen smartphone, "operation 2: wireless networking lock" may be performed. have. Alternatively, assuming that there is specific data that is not desired to be disclosed, when a command (file open) for reading the specific data is input, "operation 6: deleting specific data" may be performed. As another example, assuming that the host device 601 is a vehicle, stopping the engine during a high speed driving may cause a big accident, and thus, “operation 4: stopping the engine” is when the vehicle is moving below a preset speed. You can set the condition to only run.

In addition, the theft operation indicator may instruct the user terminal 600 to perform a plurality of theft operations in sequence over time. For example, smartphones are often lost, rather than stolen. Therefore, it is assumed that the first case is lost, and theft operation is performed. For example, "Operation 1: Alerting" may be performed. This may generate an alert to help the user terminal 600 easily find it when it is nearby but not found. In addition, it is possible to perform "Operation 4: output of guide message". This guides other contacts of the user of the user terminal 600 to help the learner of the user terminal 600 contact. At this time, if the preset time has elapsed, the user terminal 600 is not lost, but is stolen, or even if lost, it is assumed that the state is not recoverable by the learner's good faith. In this case, it is possible to perform theft operations such as "operation 3: lock only outgoing calls", "operation 5: transfer to specific data backup server", and "operation 6: delete specific data".

After generating the theft control message as described above, the broadcast server 400 broadcasts the theft control message to the user terminal 600 in step S1510. Since the transmitted theft control message is transmitted in a broadcasting manner, the user terminal 600 may recognize that the message is a message transmitted to the user through the identifier of the message. Therefore, when the user terminal 600 receives the broadcast signal, the user terminal 600 extracts the theft control message transmitted to the user terminal 600 itself from the broadcast signal, and according to the theft operation indicator of the theft control message in step S1515, the corresponding theft Perform the action. For example, in the case of a vehicle, an operation indicated by the theft operation indicator may be performed during operations 1 to 4. In addition, as described above, the user terminal 600 may perform theft operation according to a condition, or may sequentially perform the plurality of theft operations. Accordingly, the data of the user terminal 600 or the host device equipped with the user terminal 600 can be protected, and the possibility of recovery can be increased by not using the function.

16 is a flowchart illustrating a method for controlling a stolen terminal of a broadcast server according to an embodiment of the present invention.

Referring to FIG. 16, the broadcast server 600 recognizes theft of the user terminal 600 or the host device 601 in operation S1600. As described above, the broadcast server 600 may recognize the theft when the theft generation message is received or when the user of the user terminal 600 or the host device 601 directly reports using another terminal.

The broadcast server 600 recognizing the theft generates a theft control message in step S1605. The theft control message includes an identifier of the user terminal 600 and theft operation indicator indicating the theft operation. In addition, the theft operation indicator includes a device type of the user terminal 600 or the host device 601 and a theft operation to be executed by the user terminal 600 or the host device 601. Such theft operation indicator may be configured to perform theft operation sequentially or conditionally over time.

The broadcast server 600 generating the theft control message transmits the theft control message in step S1610. The transmitted theft control message is carried in the broadcast signal through the broadcast transmitter 500 and transmitted in a broadcast manner.

17 is a flowchart illustrating a method for controlling a stolen terminal of a user terminal according to an embodiment of the present invention.

The user terminal 600 may receive a broadcast signal in step S1700. Then, the user terminal 600 extracts the theft control message transmitted to the target from the broadcast signal in step S1705. Since the theft control message includes the identifier of the user terminal 600, the user terminal 600 may extract the theft control message transmitted to the target through its identifier.

The user terminal 600 which extracts the theft control message performs the theft operation as indicated by the theft operation indicator of the theft control message. Such theft operation indicator, as described above, depends on the type of device and indicates at least one of various theft operations. In addition, the theft operation indicator may instruct to perform theft operation sequentially or conditionally.

According to the present invention as described above, by controlling the user terminal or the host device equipped with the user terminal through digital broadcasting, to facilitate the recovery of the user terminal or the host device equipped with the user terminal, to protect the privacy of the user Can be. In particular, according to the present invention, the user terminal 600 can receive a large amount of information in real time by receiving the DGPS information provided in real time through broadcast, thereby correcting the GPS location information, thereby more precise to the user GPS location information can be provided. In addition, by using a larger number of virtual reference station or reference station 100 in accordance with the accuracy of the virtual reference station in the vicinity from the current position, by generating new correction information, by using it to correct the GPS position information, More accurate GPS location information can be provided, allowing more precise location tracking for the stolen user terminal 600 or host device 601. In particular, the present invention can provide GPS position information that maintains a certain level of accuracy or more. On the other hand, the present invention in consideration of improving the performance or response speed of the user terminal 600, the user terminal 600 sets a predetermined level, and generates new correction information according to the set criteria, the GPS position information May be corrected so that the GPS position correction process may be appropriately performed according to the type of the user terminal 600.

Up to now, the collection server 200, the service server 300 and the broadcast server 400 has been implemented as a separate device, each has been described as performing a unique function. However, the above-described collection server 200, service server 300 and broadcast server 400 may be implemented in one device, each may be implemented in a different device. In addition, some or all of the functions described as each of the above-described servers 200, 300, and 400 may be performed by another server 200, 300, or 400 instead of the corresponding server. As a representative example, the service server 300 may perform some or all of the functions performed by the broadcast server 400, and the broadcast server 400 may perform some or all of the functions of the service server 300. .

The location information providing method according to an embodiment of the present invention may be implemented in a form of a program readable by various computer means and recorded in a computer-readable recording medium. Here, the recording medium may include a program command, a data file, a data structure, etc. alone or in combination. Program instructions recorded on the recording medium may be those specially designed and constructed for the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. For example, the recording medium may be a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM or a DVD, a magneto-optical medium such as a floppy disk magneto-optical media, and hardware devices that are specially configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like. Such a hardware device may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been described with reference to several preferred embodiments, these embodiments are illustrative and not restrictive. As such, those of ordinary skill in the art will appreciate that various changes and modifications may be made according to equivalents without departing from the spirit of the present invention and the scope of rights set forth in the appended claims.

100: base station 200: collection server
300: service server 400: broadcast server
410: communication module 420: calibration information module
430: Theft information module 500: Broadcasting transmitter
600: user terminal 601: host device
610: broadcast signal receiver 620: location information receiver
630: communication unit 640: theft detection unit
650: control unit 700: tracking terminal
701: tracking vehicle 710: broadcast signal receiving unit
720: storage unit 730: output unit
740: control unit

Claims (15)

In the theft control and tracking system using digital multimedia data broadcasting,
When theft of the user terminal or the host device equipped with the user terminal is detected, a theft control message is generated to instruct a theft operation for controlling a part or all of the function of the user terminal or the host device equipped with the user terminal. Location information and correction information of the station and the virtual reference station, when the correction information of the virtual reference station is generated, the accuracy determined according to the number of reference stations used and the generation method of the correction information, and the large area according to the size of the region Differential Global Positioning System (DGPS) having a regional level divided into sub-regions, sub-regions, and sub-regions, including regional information divided according to the regional levels, and regional information, which is information representing a reference station and a virtual reference station belonging to the divided regional area. (DGI) containing correction information for calibrating GPS location information according to the Transport Protocol Expert Group (TPEG) format. a broadcast server which encodes a ential GPS information message and transmits the generated theft control message and the encoded DGI message through a broadcast signal; And
When theft is detected, the theft server notifies the occurrence of theft and transmits a theft occurrence message indicating its current location, and extracts the DGPS information from the DGI message, and receives the GPS location using the extracted DGPS information. And a user terminal configured to correct the information to calculate the current location, receive the theft control message, and perform the theft operation according to the received theft control message. The method of claim 1,
The theft control message is
Theft device control and tracking system, characterized in that it comprises a theft operation indicator for instructing to perform at least one of a plurality of theft operation set according to the user terminal or the type of device of the host device equipped with the user terminal. . The method of claim 2,
The theft operation indicator
And instruct the user terminal to sequentially perform the theft operation or conditionally. delete The method of claim 1,
The broadcast server
And upon receipt of the theft occurrence message, a theft information message including an identifier identifying the stolen user device and location information of the stolen user device. The method of claim 5,
And a tracking terminal for receiving the theft information message, extracting location information of the user device from the theft information message, and outputting the extracted location information of the user device. . delete The method of claim 1, wherein the user terminal
Anti-theft device control, characterized in that the GPS position information received at the current position is corrected by varying the number of reference stations and virtual reference stations for which correction information is used according to the accuracy of correction information of at least one adjacent virtual reference station. And tracking system. An apparatus for controlling and tracking a stolen device using digital multimedia data broadcasting,
A broadcast signal receiver for receiving a broadcast signal;
A control unit which extracts a theft control message for indicating an operation that can be taken when the user terminal or a host device equipped with the user terminal is stolen from the received broadcast signal, and performs theft operation according to the extracted theft control message; And
It includes a communication unit for communication,
The broadcast signal receiving unit according to the position information and correction information corresponding to the plurality of reference stations and the virtual reference station from the broadcast server, the number of reference stations used when the correction information of the virtual reference station is generated, and the method of generating the correction information. According to the determined accuracy and the size of the region, each region has a regional level divided into a large region, a middle region, or a small region, and information indicating a region classified according to the region level, and reference and virtual reference stations belonging to the region; DGPS information generated using human rights information receives a DGI message encoded according to the TPEG format.
The controller calculates a current position by correcting GPS position information received using the DGPS information.
When theft is detected, an apparatus for controlling and tracking the theft device, characterized in that it transmits a theft generation message informing the current location of the theft at the same time to the broadcast server via the communication unit. 10. The method of claim 9,
The theft control message is
And an anti-theft operation indicator for instructing the user terminal to perform at least one of a plurality of theft operations of a user terminal or a host device equipped with the user terminal. The method of claim 10,
The theft operation indicator
And instruct the user terminal to sequentially perform the theft operation, or conditionally perform the theft operation. delete In the method for the control and tracking of the theft device using digital multimedia data broadcasting,
When the broadcast server detects the theft of the user terminal or the host device equipped with the user terminal, the broadcast server generates a theft control message for indicating an action that may be taken when the user terminal or the host device equipped with the user terminal is stolen. Location information and correction information of the station and the virtual reference station, when the correction information of the virtual reference station is generated, the accuracy determined according to the number of reference stations used and the generation method of the correction information, and the large area according to the size of the region Differential Global Positioning System (DGPS) having a regional level divided into sub-regions, sub-regions, and sub-regions, including regional information divided according to the regional levels, and regional information, which is information representing a reference station and a virtual reference station belonging to the divided regional area. Differential G, which contains correction information for calibrating GPS location information according to the Transport Protocol Expert Group (TPEG) format. Encoding the PS-information message to transmit the generated theft control message and the encoded DGI message through a broadcast signal; And
When the user terminal detects the theft, the broadcasting server notifies the occurrence of theft and transmits a theft occurrence message indicating its current location, and extracts the DGPS information from the DGI message and uses the extracted DGPS information. Correcting the received GPS location information to calculate the current location, receiving the theft control message, and performing a theft operation according to the received theft control message; Way. The method of claim 13,
The theft control message is
And a theft operation indicator for instructing the user terminal to perform at least one of a plurality of theft operations of a user terminal or a host device equipped with the user terminal. 15. The method of claim 14,
The theft operation indicator
And instruct the user terminal to sequentially perform the theft operation, or conditionally perform the theft operation.

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