KR100836238B1 - Method, apparatus for updating navigation information, and record carrier on which program for implementing the same is recorded - Google Patents

Abstract

A method and apparatus for updating navigation information is disclosed. The method of updating the navigation information may include: (a) determining whether an update of the navigation information is required; (b) determining whether the reception strength of the digital broadcast received from the DMB broadcasting center is equal to or greater than a preset reference value when it is determined that the update is necessary; (c) receiving navigation information from the DMB broadcasting center when the reception strength of the digital broadcasting is higher than or equal to a preset reference value; (d) requesting and receiving the navigation information from the navigation information providing server when the reception strength of the digital broadcast is less than a preset reference value; And (e) updating the pre-stored navigation information by using the received navigation information, and there is an effect of updating the navigation information in real time using the TPEG service.

Navigation, Terminal, DMB, TPEG

Description

Method and apparatus for updating navigation information and record media recorded program for realizing the same}

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram briefly showing a configuration of an entire system for updating navigation information according to an embodiment of the present invention.

2 is a flowchart illustrating a process of updating navigation information according to an exemplary embodiment of the present invention.

3 is a diagram illustrating a process of determining whether to update navigation information according to an exemplary embodiment of the present invention.

4 is a diagram illustrating a process of retransmitting navigation information having a transmission error according to an embodiment of the present invention.

5 is a block diagram showing a configuration of a mobile communication terminal for updating navigation information according to an embodiment of the present invention.

The present invention relates to a method for updating navigation information by a mobile communication terminal having a DMB reception function. More particularly, the present invention relates to a method for updating navigation information by selecting a transmitter of a navigation information according to a reception strength of a DMB broadcast signal. It is about a method.

In general, a mobile communication terminal having a navigation function is provided with navigation information (eg, map information, etc.) stored at the time of manufacture. However, since the stored navigation information changes over time, the need for updating is required. Therefore, the company providing the mobile communication terminal distributes the navigation information at regular intervals, and the user updates the previously stored navigation information using the distributed navigation information.

The terminal provider collects and distributes navigation information through various routes. For example, the terminal provider stores the navigation information in a physical storage medium such as a CD and distributes the data offline or through the wireless Internet.

However, the above-mentioned distribution process is difficult to be made in real time, and if the terminal user wants to receive navigation information in real time through the wireless Internet, etc., there is a problem in that a separate communication fee or data fee is to be paid.

In addition, the TPEG (Transport Protocol Expert Group) service may be used to remove the burden of communication fees for updating the navigation information, but there is a problem in that the navigation information cannot be updated in real time in a place where DMB reception is not smooth. .

In addition, according to the related art, after receiving navigation information using a TPEG service in real time, when some navigation information has an error, DMB communication is only one-way communication, and thus it is impossible to request the recovery of the data. have.

In order to solve the conventional problems as described above, the present invention is to propose a method and apparatus for updating the navigation information in real time using the TPEG service.

In addition, another object of the present invention is to provide a method and apparatus for updating navigation information without burdening a separate communication fee or data fee through a DMB receiving apparatus.

Another object of the present invention is to provide a method and apparatus for updating navigation information in real time even where DMB reception is not smooth.

In addition, another object of the present invention is to provide a method and apparatus for updating navigation information that can immediately request the recovery of data in error when an error occurs in the received navigation information.

Still other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention, the method for updating the navigation information performed in the mobile communication terminal connected to the DMB broadcasting center and the navigation information providing server through a communication network (a) of the navigation information Determining whether an update is necessary; (b) determining whether the reception strength of the digital broadcast received from the DMB broadcasting center is equal to or greater than a preset reference value when it is determined that the update is necessary; (c) receiving navigation information from the DMB broadcasting center when the reception strength of the digital broadcasting is higher than or equal to a preset reference value; (d) requesting and receiving the navigation information from the navigation information providing server when the reception strength of the digital broadcast is less than a preset reference value; And (e) updating previously stored navigation information using the received navigation information.

According to another aspect of the present invention, there is tangibly embodied a program of instructions that can be executed by a mobile communication terminal to perform a method of updating navigation information, and records a program that can be read by the mobile communication terminal. A medium comprising: (a) determining whether an update of navigation information is required; (b) determining whether the reception strength of the DMB broadcast received from the DMB broadcasting center is greater than or equal to a preset reference value when it is determined that an update is necessary; (c) receiving navigation information from the DMB broadcasting center when the reception strength of the DMB broadcasting is greater than or equal to a preset reference value; (d) requesting and receiving the navigation information from the navigation information providing server if the reception strength of the DMB broadcast is less than a preset reference value; And (e) a recording medium recording a program for updating the previously stored navigation information using the received navigation information.

According to another aspect of the present invention, a mobile communication terminal connected to a DMB broadcasting center and a navigation information providing server through a communication network includes a DMB receiving unit for receiving navigation information and version information of the navigation information from the DMB broadcasting center; Determining whether the communication unit for requesting and receiving the navigation information and the version information of the navigation information from the navigation information providing server and the version information of the received navigation information and the version information of the navigation information previously stored in the mobile communication terminal, It may include an update unit for updating the pre-stored navigation information by using the received navigation information.

Here, if the version information of the received navigation information and the version information of the navigation information pre-stored in the mobile communication terminal are not the same, the reception strength of the digital broadcast received from the DMB broadcasting center is compared with a preset reference value, When the reception strength of a broadcast is greater than or equal to a preset reference value, navigation information is received from the DMB broadcasting center. When the reception strength of the digital broadcast is less than a preset reference value, the navigation information may be requested and received from the navigation information providing server. .

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

 Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a diagram briefly showing a configuration of an entire system for updating navigation information according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the entire system for updating navigation information may include a mobile communication terminal 100, a DMB broadcasting center 110, a navigation information providing server 120, and a TPEG server providing server 130. .

As shown in FIG. 1, according to an embodiment of the present invention, the TPEG (Transport Protocol Expert Group) service providing server 130 collects navigation information (eg, map information, real-time traffic information, etc.) The broadcasting center 110 and the navigation information providing server 120 may be provided. The provided navigation information may be provided to the mobile communication terminal 100 connected through a communication network (not shown). Here, when the mobile communication terminal 100 receives the navigation information from the DMB broadcasting center 110, the communication network may be a broadcasting network (for example, a terrestrial DMB network or a satellite DMB network). In addition, when the mobile communication terminal 100 receives the navigation information from the navigation information providing server 120, the communication network may be a mobile communication network (for example, CDMA, WCDMA, Wibro, etc.).

That is, according to an embodiment of the present invention, the mobile communication network moves in a state or region where reception of a digital multimedia broadcasting (DMB) broadcasting signal (hereinafter, referred to as a 'DMB broadcasting signal' or a 'digital broadcasting signal') is not smooth. It may be used as a backup network for providing navigation information to the communication terminal 100. However, in the present invention, the mobile communication network does not act only as a backup network for all navigation information. For example, in case of navigation information that is not suitable to be transmitted through a broadcasting network, the mobile communication network may be applied to the broadcasting network in preference. In addition, according to the user's designation, the mobile communication network may be a path for providing navigation information in preference to the broadcasting network. That is, in the present invention, the broadcasting network and the mobile communication network are in a complementary relationship.

The mobile communication terminal 100 is a device capable of storing navigation information and updating stored navigation information using TPEG-based navigation information according to the present invention. In addition, the mobile communication terminal 100 has a DMB reception function for receiving navigation information transmitted from the DMB broadcasting center 110, and can process navigation information such as received TPEG-based map information and additional traffic information. It can have a function. That is, it has a function of receiving the TPEG stream and decoding the received TPEG stream to provide navigation information to the user. If the TPEG stream is received through a DAB (Digital Audio Broadcasting) network or a DMB (Digital Multimedia Broadcasting) network, the mobile communication terminal 100 receives a TPEG stream wrapped in a TDC (Transparent Data Channel) and the TPEG in the TDC. The stream can be detected and decoded. Of course, according to a preferred embodiment of the present invention, the navigation information may be received from the navigation information providing server 120 at the request of the mobile communication terminal (100).

In addition, the mobile communication terminal 100 is capable of data communication via wireless, such as a wireless LAN (LAN) terminal, a Bluetooth (Bluetooth) terminal, a portable Internet terminal, as well as a mobile communication terminal including a PCS, PDA, smart phone, and the like. It refers to all terminals, and in particular, is a terminal equipped with a navigation function or connectable with a navigation kit. Therefore, the mobile communication terminal 100 according to the present invention may be used as a car navigation device or a pedestrian navigation device according to a usage method. Hereinafter, a mobile communication terminal equipped with a wireless communication function and a DMB reception function will be described as an example, but the other terminals can be applied in the same manner.

The DMB broadcasting center 110 may include a satellite DMB broadcasting center and a terrestrial DMB broadcasting center. Here, the terrestrial DMB is a broadcast signal transmitted by the terrestrial DMB broadcasting center like a general TV and is provided to the user by the DMB receiving apparatus, and the satellite DMB is a broadcast signal transmitted through a satellite.

The terrestrial DMB can provide various contents such as music, text, video, etc. to the user through the mobile communication terminal 100 by using a mobile reception characteristic, and establish a complementary relationship with digital terrestrial TV broadcasting to establish a mobile communication terminal ( The combined service with 100 can create breakthrough demand.

Satellite DMB provides multimedia broadcasting services including audio and additional data or video to fixed, mobile, and portable receivers through satellite, and provides various quality audio broadcasting services at low cost and covers a large area by using satellites. By dramatically expanding the audible range of existing broadcasts.

When the TPEG-based navigation information is received through the TDC, the DMB broadcasting center 110 may include the navigation information as additional data and transmit the navigation information to the mobile communication terminal 100. That is, the DMB broadcasting center 110 may include a TPEG stream in broadcast data of a specific channel. Here, the broadcast signal transmitted from the DMB broadcasting center 110 may be a digital or analog signal.

In addition, the DMB broadcasting center 110 may transmit version information of the navigation information to the mobile communication terminal 100 so that the mobile communication terminal 100 may determine whether the stored navigation information is updated. In addition, when the DMB broadcasting center 110 transmits version information, the version information may include identification information so that the mobile communication terminal 100 may recognize whether the received information is version information.

The navigation information providing server 120 receives the navigation information from the TPEG service providing server 130 and transmits the navigation information received according to the request according to the user's request or whether the mobile communication terminal 100 can receive the DMB broadcast. 100 can be sent. In addition, similar to the DMB broadcasting center 110, the navigation information providing server 120 may transmit version information of the navigation information and identification information of the version information to the mobile communication terminal 100.

In addition, the navigation information providing server 120 may receive a navigation information request for updating from the mobile communication terminal 100 determined that the reception strength of the DMB broadcasting received from the DMB broadcasting center 110 is less than a preset reference value. Here, the navigation information providing server 120 may extract the requested navigation information and transmit the extracted navigation information to the mobile communication terminal 100.

In addition, the navigation information providing server 120 receives a navigation information request from the mobile communication terminal 100 that has received the update information from the DMB broadcasting center, which has a transmission error among the navigation information received by the mobile communication terminal 100. can do. Here, the navigation information providing server 120 may extract the requested navigation information and transmit it to the mobile communication terminal 100.

The TPEG service providing server 130 acquires navigation information (for example, map information, notice information, safe driving information, surveillance camera information, etc.) through various paths and builds a TPEG-based navigation information database. The database can be updated each time new navigation information is obtained.

The TPEG service providing server 130 generates a TPEG stream by encoding navigation information constructed in a database according to the TPEG specification. The generated TPEG stream may be provided to the DMB broadcasting center 110 or the navigation information providing server 120 connected through the communication network. Here, the communication network (not shown) may be a broadcasting network such as a digital audio broadcasting (DAB) network or a digital multimedia broadcasting (DMB) network, or the like, and may be applied without limitation as long as the network can transmit data. When providing the generated TPEG stream through a broadcasting network such as a DAB network or a DMB network, the TPEG service providing server 130 may transmit the TPEG stream through a TDC (Transparent Data Channel). Here, the TDC is defined by DAB (Digital Audio Broadcasting) and is a channel capable of transmitting data in a format defined by a broadcaster or a stream provider.

The TPEG specification is based on the TPEG technology, which was developed by the Broadcast Management Committee of the European Broadcasting Union (EBU). Here, the TPEG standard is intended to provide navigation information such as real-time traffic information, additional traffic information, safe driving and danger information, and location of interest information in a multimedia broadcasting environment. Therefore, since the TPEG standard considers various transmission media capable of loading additional data without being limited to a broadcasting network, the method of transmitting TPEG data depends on the method of transmitting data in the transmission medium. For example, when using a DAB network, the TPEG stream follows a scheme of transmitting additional data in the DAB. In addition, when using a TCP / IP network, the TPEG stream may be transmitted on an IP datagram. Therefore, the TPEG service providing server 130 may generate a TPEG stream suitable for each transmission medium.

In addition, unlike the illustrated in FIG. 1, the TPEG service providing server 130 may be a DMB broadcasting center 110. If the DMB broadcasting center 110 is a TPEG service providing server 130, the DMB broadcasting center 110 generates a TPEG stream using navigation information collected through various paths, and adds the generated TPEG stream to broadcast data. Can be sent in data format. Of course, the collected navigation information may be sent in an independent data format. The transmitted broadcast data may be directly transmitted to the mobile communication terminal 100 or transmitted to the mobile communication terminal 100 via the navigation information providing server 120.

2 is a flowchart illustrating a process of updating navigation information according to an exemplary embodiment of the present invention.

Referring to FIG. 2, in step 210, the mobile communication terminal 100 determines whether the navigation information needs to be updated by using version information of the navigation information received from the DMB broadcasting center 110 or the navigation information providing server 120. Can be. A detailed process of determining whether the mobile communication terminal 100 needs to update the navigation information will be described in detail with reference to FIG. 3.

If it is determined in step 210 that the update of the navigation information is necessary, the mobile communication terminal 100 proceeds to step 220 to check the DMB reception strength. Here, when the DMB reception state is in the off state, the mobile communication terminal 100 may output a message requesting the user to set the DMB reception state to on. Of course, the navigation information may be requested and received by the navigation information providing server 120 without outputting the request message. In this case, it is obvious that step 220 and step 230 may be omitted.

In operation 230, the mobile communication terminal 100 determines whether the DMB reception strength is greater than or equal to a preset reference value. In this case, the determination of the DMB reception strength may be performed for a predetermined time interval. For example, the DMB reception intensity may be checked for 2 minutes to determine whether the maximum value of the reception intensity is greater than or equal to a preset reference value. In addition, it may be determined whether a value obtained by averaging the DMB reception intensity over a preset time interval is equal to or greater than a preset reference value. Of course, it is obvious that the DMB reception strength received once in a very short time may be the object of judgment.

If it is determined that the DMB reception strength is less than the preset reference value, the mobile communication terminal 100 proceeds to step 240 and requests navigation information (eg, safe driving information) determined to be updated to the navigation information providing server 120. Message can be sent. In this case, to distinguish individual navigation information, a separate identifier may be added to each navigation information.

In operation 250, the navigation information providing server 120 receiving the request message may transmit the requested navigation information to the mobile communication terminal 100.

If the DMB reception strength is greater than or equal to a preset reference value in step 230, the mobile communication terminal 100 may proceed to step 260 to receive navigation information determined to be updated from the DMB broadcasting center 110. In this case, the DMB broadcasting center 110 may add an identifier for each individual navigation information so that the mobile communication terminal 100 receives and updates only the navigation information determined to be updated. In this case, it is obvious that the mobile communication terminal 100 can recognize the identifier.

In operation 270, the mobile communication terminal 100 may update previously stored navigation information using the navigation information received in operation 250 or operation 260.

In FIG. 2, the receiving and updating of the navigation information are shown as separate steps, but the receiving and updating of the navigation information may be simultaneously performed for every packet received.

In addition, although not shown in FIG. 2, according to another embodiment of the present invention, when the mobile communication terminal 100 receives navigation information from the DMB broadcasting center 110, navigation is performed for a preset time (for example, 10 minutes). If the reception of the information is not completed, the mobile communication terminal 100 may request and receive navigation information from the navigation information providing server 120. In this case, it will be apparent that the mobile communication terminal 100 needs to make a request to the navigation information providing server 120 by grasping only data which is not received in the navigation information.

3 is a diagram illustrating a process of determining whether to update navigation information according to an exemplary embodiment of the present invention.

As illustrated in FIG. 3, in step 310, the mobile communication terminal 100 may receive version information of navigation information. The navigation information may include one or more of map information, real-time traffic information (CTT), supplementary traffic information (SID), safe driving and danger information (SDI), point of interest information (POI), and notice information (REI). have. The version information may be transmitted separately from the navigation information or may be transmitted in the additional data format to the navigation information.

When the DMB broadcasting center 110 or the navigation information providing server 120 transmits version information, the version information may include identification information so that the mobile communication terminal 100 may recognize whether the version information is version information. A separate identifier may be used for the identification information, and a method of presetting a value of a specific parameter of the provided version information may be used. In addition, a method of using the format of the version information differently from the format of other information may be used. In addition, it is obvious that all methods for recognizing that the information received by the mobile communication terminal 100 is version information of the navigation information may be equally applied.

In the case of receiving data through the DMB broadcast signal, since the mobile terminal is generally free, the mobile communication terminal 100 may preferably receive version information from the DMB broadcasting center 110. However, in an area where the DMB reception strength is weak or the DMB broadcast signal cannot be received, version information may be requested and received from the navigation information providing server 120 at the user's request.

In operation 320, the mobile communication terminal 100 may determine whether the version information of the received navigation information and the version information of the navigation information previously stored in the mobile communication terminal 100 are the same. If the comparison determines that the versions are the same, the mobile communication terminal 100 proceeds to a reception state of the version information. In addition, if it is determined that the versions are not the same as a result of the comparison, the mobile communication terminal 100 may proceed to step 330 to update the navigation information. Here, the version information of the navigation information has been presented as a reference for determining whether the mobile communication terminal 100 needs to update the navigation information. However, the present invention is not limited thereto since this is only an embodiment of the present invention. That is, any criterion for determining whether to update navigation information may be applied to the present invention without limitation.

In addition, the mobile communication terminal 100 may grasp the time at which the last version of the navigation information is stored and may update the navigation information at predetermined predetermined periods.

4 is a diagram illustrating a process of retransmitting navigation information in which a transmission error occurs according to an exemplary embodiment of the present invention.

When a transmission error occurs in some of the navigation information received from the DMB broadcasting center 110 or the navigation information providing server 120, the mobile communication terminal 100 performs a retransmission procedure of the information in which the transmission error occurs before the final update. It needs to be done. However, since the mobile communication terminal 100 and the DMB broadcasting center 110 are only one-way communication, the mobile communication terminal 100 and the DMB broadcasting center 110 cannot request the navigation information having a transmission error to the DMB broadcasting center 110. Therefore, through the process illustrated in FIG. 4, the mobile communication terminal 100 may re-receive only the information in which a transmission error occurs among the navigation information received from the DMB broadcasting center 110 from the navigation information providing server 120.

Referring to FIG. 4, the mobile communication terminal 100 may receive navigation information necessary for updating from the DMB broadcasting center 110 in step 410.

In operation 420, the mobile communication terminal 100 checks navigation information in which a transmission error occurs among the received navigation information. Here, the process of confirming the data in which the transmission error occurs in the received data is somewhat distanced from the gist of the present invention, detailed description thereof will be omitted.

In operation 430, the mobile communication terminal 100 may transmit a message requesting the navigation information providing server 120 to the navigation information having a transmission error.

In operation 440, the navigation information providing server 120 may transmit navigation information corresponding to the request to the mobile communication terminal 100.

In operation 450, the mobile communication terminal 100 may perform an update process using the navigation information received in operation 410 and the navigation information received in operation 440.

5 is a block diagram illustrating a configuration of a mobile communication terminal for updating navigation information according to an embodiment of the present invention.

Referring to FIG. 5, the mobile communication terminal 100 according to the present invention includes a DMB receiver 510, a communication unit 520, an update unit 530, a transmission error check unit 540, a display unit 550, and a memory unit ( 560, a decoder 570, a key input unit 580, and a controller 590.

Of course, it will be apparent that the mobile communication terminal 100 will further include additional components (eg, a transmitter, a voice processing unit in the case of a mobile phone) according to a function provided, but it is somewhat distance from the gist of the present invention. As it is a matter of description, the description thereof is omitted. In addition, although the mobile communication terminal 100 may further include a power supply unit (not shown), the description thereof will be omitted.

The DMB receiver 510 may perform a function of receiving navigation information and version information of the navigation information from the DMB broadcasting center 110. Here, the navigation information may include map information, safe driving information, and the like, and the version information may include identification information to recognize that the mobile communication terminal 100 is version information. In addition, the version information may be information included in the TPEG-based message. In addition, the navigation information may be TPEG-based information. The received version information may be a criterion for providing whether the navigation information previously stored in the mobile communication terminal 100 is updated to require an update. However, in the present invention, the criteria for providing whether the navigation information is required is not limited to the version information. Therefore, any information that can provide whether the previously stored navigation information and the updated navigation information in the mobile communication terminal 100 are the same can be applied without limitation.

 In addition, if the version information of the received navigation information and the version information of the navigation information previously stored in the mobile communication terminal 100 are not the same, the reception strength of the DMB broadcast received from the DMB broadcasting center 110 is compared with a preset reference value. If the reception strength of the DMB broadcast is greater than or equal to a preset reference value, the navigation information is received from the DMB broadcasting center 110. If the reception strength of the DMB broadcast is less than the preset reference value, the navigation information is provided to the navigation information providing server 120. Can be received upon request.

The communication unit 520 requests and receives the navigation information and the version information of the navigation information from the navigation information providing server 120. However, in order to prevent unnecessary waste of communication resources, the navigation information and version information may be preferentially received by the DMB receiver 510 from the DMB broadcasting center 110, but the present invention is not limited thereto. In addition, although the DMB receiver 510 and the communicator 520 are illustrated as separate components in FIG. 5, when the communicator 520 has a DMB broadcast signal reception function, the communicator 520 is a DMB receiver 510. It may include.

The updater 530 determines whether the version information of the navigation information received by the DMB receiver 510 or the communication unit 520 and the version information of the navigation information previously stored in the mobile communication terminal 100 are the same. In addition, by using the navigation information received by the DMB receiver 510 or the communication unit 520 performs a function to update the pre-stored navigation information. If the version information is not the same, it may be determined that the update of the navigation information is required.

The transmission error checking unit 540 checks navigation information in which a transmission error occurs among the received navigation information. According to the present invention, it is preferable that the navigation information having a transmission error is received by requesting the navigation information providing server 120. In addition, since a process of confirming navigation information having a transmission error among the received navigation information will be apparent to those skilled in the art, a detailed description thereof will be omitted.

The display unit 550 performs a function of outputting the updated navigation information under the control of the controller 590 so that the user can view it. Details of the configuration and role of the display unit 550 are somewhat distanced from the gist of the present invention, and thus detailed description thereof will be omitted.

The memory unit 560 may perform a function of storing navigation information and version information of the navigation information received from the DMB broadcasting center 110 or the navigation information providing server 120. In addition, the application program for driving the mobile communication terminal 100 according to the present invention can be stored.

The decoding unit 570 decodes the encoded navigation information and the version information of the navigation information received from the DMB broadcasting center 110 or the navigation information providing server 120. Here, since the decoding process of the data is obvious to those skilled in the art, a detailed description thereof will be omitted.

The key input unit 580 performs a function of receiving a command for updating the navigation information of the mobile communication terminal 100 from the user. Here, the key input unit 580 is composed of a keypad consisting of a plurality of numeric keys and a plurality of function keys and a scan code generator. Since the general configuration of the key input unit 580 is widely known, a detailed description thereof will be omitted.

The control unit 590 is a mobile communication terminal 100 according to the present invention DMB receiving unit 510, the communication unit for updating the navigation information received from the DMB broadcasting center 110 or the navigation information providing server 120 connected through a communication network 520, the update unit 530, the transmission error check unit 540, and the like.

All components of the mobile communication terminal 100 shown in FIG. 5 are not necessarily implemented in hardware, and some components (for example, the updater 530 and the transmission error checker 540) may not be implemented. Obviously, it may be implemented in the form of an application.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, the method and apparatus for updating the navigation information according to the present invention has the effect of updating the navigation information in real time using the TPEG service.

In addition, the present invention has the effect that it is possible to update the navigation information without the burden of a separate communication fee or data usage fee through the DMB receiving apparatus.

In addition, the present invention has the effect of updating the navigation information in real time even where the DMB reception is not smooth.

In addition, the present invention has the effect of updating the navigation information that can immediately request the recovery of the error data in the event of an error in the received navigation information.

Claims (13)

A method of updating navigation information performed in a mobile communication terminal connected to a DMB broadcasting center and a navigation information providing server through a communication network, (a) determining whether an update of the navigation information is required; (b) determining whether the reception strength of the digital broadcast received from the DMB broadcasting center is equal to or greater than a preset reference value when it is determined that the update is necessary; (c) receiving navigation information from the DMB broadcasting center through a broadcasting network when the reception strength of the digital broadcasting is higher than or equal to a preset reference value; (d) requesting and receiving the navigation information from the navigation information providing server through a mobile communication network if the reception strength of the digital broadcast is less than a preset reference value; And (e) updating the previously stored navigation information by using the received navigation information. The method according to claim 1, In step (a), (a1) receiving version information of navigation information from the DMB broadcasting center or a navigation information providing server; (a2) determining whether the version information of the received navigation information and the version information of the navigation information previously stored in the mobile communication terminal are the same; And (a3) if the version information is not the same, determining that the update of the navigation information is necessary. The method according to claim 2, And the version information is information included in a transport protocol expert group (TPEG) based message. The method according to claim 3, And the version information includes identification information of the version information. The method according to claim 1, wherein step (c), Determining whether the reception time of the navigation information exceeds a preset time, and if the reception time exceeds a preset time, requesting and receiving the navigation information from the navigation information providing server. To update navigation information. The method according to claim 1, In step (c), And requesting and receiving the navigation information from the received navigation information, the navigation information having a transmission error, from the navigation information providing server. The method according to claim 1, The navigation information is a method for updating navigation information, characterized in that the information based on TPEG (Transport Protocol Expert Group). The method according to claim 7, The navigation information may include at least one of map information, real-time traffic information, additional traffic information, safe driving information, danger information, interest location information, and notice information. In the recording medium recording a program that can be read by the mobile communication terminal is implemented a program for performing a method for updating the navigation information, (a) determining whether an update of the navigation information is required; (b) determining whether the reception strength of the digital broadcast received from the DMB broadcasting center is equal to or greater than a preset reference value when it is determined that the update is necessary; (c) receiving navigation information from the DMB broadcasting center through a broadcasting network when the reception strength of the digital broadcasting is higher than or equal to a preset reference value; (d) requesting and receiving the navigation information from the navigation information providing server through a mobile communication network if the reception strength of the digital broadcast is less than a preset reference value; And (e) a recording medium having recorded thereon a program for updating the previously stored navigation information by using the received navigation information. The method according to claim 9, In step (c), And requesting and receiving the navigation information from the received navigation information, the navigation information having a transmission error, from the navigation information providing server. A mobile communication terminal connected to a DMB broadcasting center and a navigation information providing server through a communication network, A DMB receiver configured to receive navigation information and version information of the navigation information from the DMB broadcasting center; A communication unit for requesting and receiving navigation information and version information of the navigation information from the navigation information providing server; And determining whether the version information of the received navigation information and the version information of the navigation information previously stored in the mobile communication terminal are the same, and updating the previously stored navigation information by using the received navigation information. If the version information of the received navigation information and the version information of the navigation information previously stored in the mobile communication terminal are not the same, the reception strength of the digital broadcast received from the DMB broadcasting center is compared with a preset reference value, Receiving navigation information from the DMB broadcasting center through a broadcasting network when the reception strength is greater than or equal to a preset reference value, and requesting the navigation information to the navigation information providing server through a mobile communication network when the reception strength of the digital broadcasting is less than the preset reference value. Mobile communication terminal, characterized in that for receiving. The method according to claim 11, And the version information is information included in a transport protocol expert group (TPEG) based message. The method according to claim 11, The mobile communication terminal further comprises a transmission error checking unit for checking navigation information in which a transmission error occurs among the received navigation information, wherein the navigation information in which the transmission error occurs is requested by the navigation information providing server.

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