KR101408035B1 - Method and Apparatus of providing audio files for guiding path - Google Patents

Abstract

A method and apparatus for providing route guidance voice data is disclosed. According to the voice data providing server and the route guidance terminal according to the present invention, the route guidance terminal reproduces the voice data received from the voice data providing server in accordance with the present position of the voice data providing server, Or voice guidance is provided to the user without separately providing a TTS module for synthesizing voice.

Description

[0001] The present invention relates to a method and an apparatus for providing route guidance voice data,

The present invention relates to a method and apparatus for providing route guidance voice data, and more particularly, to a method and apparatus for providing a route guidance by generating a voice data to a route guidance terminal by a server providing voice data, .

In recent years, a navigation terminal using a GPS satellite signal has become popular. The navigation terminal outputs voice in two ways.

The first method is to record voice data in the case where the recording medium built in the navigation terminal stores all of the voice data and a preset situation (for example, a speedy camera access situation, a dangerous area situation, a left / right route entry situation, Extracts the voice data from the medium, and outputs the voice data.

Since the first voice output method stores all the voice data on the recording medium of the navigation, the data size of the voice data stored on the recording medium is very large. In addition, there is a problem that the user of the navigation terminal must directly modify the recording medium if the previously stored voice data needs to be corrected.

The second method is a method in which navigation information is provided by a route guidance central server, and then a TTS (Text To Speech) module is provided in the navigation, and the guide information is converted into voice and output through a speaker. Second, the voice output method requires a TTS module for each navigation device, and since the license fee of the TTS module must be paid, the cost is charged to the user.

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for routing a route to a user without installing a TTS module for generating a recording medium or a voice file for storing voice files.

According to an aspect of the present invention, there is provided a voice data providing server including: a route search unit for searching for a route from a departure point to a destination based on departure point information and destination information received from a route guidance terminal; An extracting unit for extracting text information including location information for each point located on the searched route and a character string for guiding the traveling; A voice conversion unit for converting the extracted text information into voice data and tagging the voice data with the position information; A voice data selection unit for selecting voice data having positional information in a section from a current position received from the route guidance terminal to the destination; And providing the selected voice data to the route guidance terminal.

According to an aspect of the present invention, there is provided a route guidance terminal including: a route search request unit for transmitting a route search request signal including destination and destination information input to a voice data providing server; A current position providing unit for providing the current position of the user, which is determined based on the GPS signal, to the voice data providing server; A voice data receiving unit for receiving voice data in which location information is tagged within a period from the current location to the destination from the voice data providing server; And an output position determiner for determining an output position of the voice data based on a real time current position and positional information tagged in the voice data.

According to an aspect of the present invention, there is provided a route guidance system for searching for a route based on departure point information and destination information received from a route guidance terminal, The method includes the steps of extracting text information for navigating information and a route, converting the extracted text information into voice data, tagging the extracted location information with the voice data, A voice data providing server for selecting voice data having positional information in the interval from the voice data providing server to the voice guidance server; And a route guidance terminal for determining the current position based on the GPS signal, and determining an output position of the voice data based on the positional information tagged in the transmitted voice data and the real time current position.

According to an aspect of the present invention, there is provided a method for providing voice data, the method comprising: searching for a route from a source to a destination based on source information and destination information received from a route guidance terminal; An extracting step of extracting text information including location information of each point located on the searched route and a character string that guides a travel of the searched route; A voice conversion step of converting the extracted text information into voice data and tagging the extracted voice data with the extracted position information; A voice data selecting step of selecting voice data having positional information in a section from a current position received from the route guidance terminal to the destination; And providing the selected at least one voice data to the route guidance terminal.

According to another aspect of the present invention, there is provided a route guidance method including: a route search request step of providing a route search request signal including destination and destination information to a voice data providing server; A current position providing step of transmitting to the voice data providing server a current position of the user, which is determined based on a GPS signal; A voice data receiving step of receiving voice data tagged with position information from the voice data providing server in the interval from the current position to the destination; And an output position determination step of determining an output position of the voice data based on the current position and the position information tagged in the voice data.

According to the present invention, since the route guidance terminal does not need to have a large capacity recording medium for storing voice files or a TTS module for generating voice data, it is possible to reduce the waste of the recording medium and to allow the user of the route guidance terminal to pay a license fee for the TTS module There is an advantage in that cost can be reduced. Further, when the guide information for route guidance is updated, the updated information can be provided even if the user does not update the route guidance terminal directly.

1 is a diagram illustrating a voice data providing server according to an embodiment of the present invention.
2 is a view illustrating a route guidance terminal according to an embodiment of the present invention.
3 is a flowchart illustrating a route guidance system according to an embodiment of the present invention.
4 is a flowchart illustrating a method of providing voice data according to an embodiment of the present invention.
5 is a flowchart illustrating a route guidance method according to an embodiment of the present invention.

The following merely illustrates the principles of the invention. Thus, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or shown herein, embody the principles of the invention and are included in the concept and scope of the invention. Furthermore, all of the conditional terms and embodiments listed herein are, in principle, intended only for the purpose of enabling understanding of the concepts of the present invention, and are not intended to be limiting in any way to the specifically listed embodiments and conditions . It is also to be understood that the detailed description, as well as the principles, aspects and embodiments of the invention, as well as specific embodiments thereof, are intended to cover structural and functional equivalents thereof. It is also to be understood that such equivalents include all elements contemplated to perform the same function irrespective of currently known equivalents as well as equivalents to be developed in the future.

The above objects, features and advantages will become more apparent from the following detailed description in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, when an element is referred to as "including " an element, it does not exclude other elements unless specifically stated to the contrary.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a voice data providing server according to an embodiment of the present invention.

Referring to FIG. 1, a voice data providing server 100 is a server for providing voice data for route guidance to a route guidance terminal, and includes a receiving unit 101, a route searching unit 102, an extracting unit 103, A sound data selection unit 105, a sound source data storage unit 107, a detection unit 108, a sound conversion control unit 109, an electronic map database 110, an update processing unit 111, .

The electronic map database 110 stores an electronic map including road information, location information, and text information for route guidance. The electronic map database 110 can use various storage media such as EPROM, flash memory, and external memory depending on the capacity of data of the electronic map.

The road information is information on each section of the road included in the area shown by the electronic map, for example, lane information, intersection information, kind of road and number (highway 60, highway 1).

The location information is information that can distinguish a specific location point from other points on the electronic map, and it means a two-dimensional coordinate of longitude and latitude, a GPS coordinate, or a unique identification number given by location on the electronic map.

The text information includes information for direction guidance on the moving route, and includes guidance information such as direction information, traffic information, precautions, section information, area information, news in the area, introduction of a person in the area, , The data format corresponds to information that is not vocalized as a text format. You can illustrate the text format of symbols, strings, and numbers.

Text information is stored in association with location information on each electronic map. Therefore, when the position information corresponding to the text information is read, the position related to the text information can be grasped.

The receiving unit 101 receives a route search request signal requesting the route guidance terminal 200 to search for a route from the origin to the destination. The receiving unit 101 can use a wireless mobile communication network or an internet network for signal reception.

The route search request signal includes source information and destination information. The path search request signal may include a unique identification packet to distinguish itself from other signals received by the receiving unit 101. [

For example, when the voice data providing server is set to perform route search when it receives the "AA" packet, the route search request signal may include an "AA" packet with the source and destination information. The starting point information indicates a predetermined position input by the user of the route guidance terminal 200 or a current position of the route guidance terminal 200.

The receiving unit 101 receives the current position of the route guidance terminal 200 from the route guidance terminal 200 in addition to the route search request signal. The receiving unit 101 does not repeatedly receive the same route search request signal after receiving the route search request signal for the first time. On the other hand, since the current location is continuously changed according to the movement of the route guidance terminal 200, do. The current position of the route guidance terminal 200 is used as basic information for selecting the voice data to be provided to the route guidance terminal 200 as described later.

The route search unit 102 searches for a route from the origin to the destination included in the route search request signal. And refers to the electronic map stored in the electronic map database 110 for path search.

The path to be searched by the path search unit 102 may be a single path optimized according to an algorithm preset by the administrator, but a plurality of paths may be searched to select one path among them.

For example, after searching a plurality of possible routes and receiving real-time traffic information from a traffic situation server (not shown), the estimated arrival time for the plurality of routes is reflected by reflecting the traffic information, It is possible to select a route to arrive.

The extraction unit 103 extracts the text information corresponding to the route searched by the route search unit 102 and the location information associated with the text information from the electronic map of the electronic map database 110. [

For example, an electronic map stored in the electronic map database 110 via the section of "Yeoksam-> Seonneul-> Samsung" searched by the path search unit 102 is stored in a section (first section) Speed information "corresponding to the (x, y) position point between the position information and the position information, the extracting unit 103 extracts the text information" speeding up "information stored in the section " , And extracts (x, y) as positional information corresponding to the "speeding-up" information.

The voice converting unit 104 converts the text information extracted by the extracting unit 103 into voice data, and tags the position information extracted by the extracting unit 103 to the converted voice data.

The voice conversion unit 104 includes a voice conversion module 104a for converting text information into voice data and a position information recording unit 104b for recording position information in voice data.

The voice conversion module 104a includes a recording medium (not shown) on which a voice conversion program for converting text information into voice data is recorded and generates voice data in software or as a hardware voice conversion chip, for example, a TTS Module (Text To Speech module) and hardware-converts the corresponding text information. The converted voice data can be reproduced in an electronic device such as a computer, a route guidance terminal, or a smart phone, and is exemplified by audio files of all types such as 'wav', 'mp3', 'wmv', 'asf' file.

The location information recording unit 104b records the location information extracted by the extraction unit 103 in the file name or header of the voice data converted by the voice conversion module 104a.

The reason why the location information is tagged to the voice data is that the route guidance terminal can produce the voice data by itself so that the voice guidance data can be ascertained by the route guidance terminal itself. However, according to the present invention, Receives the voice data from the voice data providing server 100, the voice data providing server 100 tags the voice data with the position information to determine the position where the received voice data should be outputted.

Therefore, the route guidance terminal 200 determines the point of time at which the voice data is output based on the position information of the received voice data. For example, when "(x, y) .mp3" is recorded as the file name of the audio data having the voice information "speedy attention", the route guidance terminal 200 displays the (x, y) And outputs a "speedy" voice when positioned within a certain radius.

The voice data storage unit 107 stores the voice data converted by the voice conversion unit 104 and stores the voice data in a list according to the position information added to the voice data. The audio data storage unit 107 may use various storage media such as EPROM, flash memory, and external memory depending on the capacity of the audio data.

For example, if the voice conversion unit 104 determines that the route searched by the route search unit 102 is a route passing through the "A-> B-> C-> D" In the case of performing four voice data conversion based on the text information associated with each point, the voice data storage unit 107 can sequentially store voice data from "A" to "D" have.

It is possible to conveniently search the stored voice data by storing the voice data in a list and store the voice data, and can grasp the route that the route searching unit 102 searches through the list of stored voice data.

Meanwhile, the voice data storage unit 107 may separately store only the list in which the tagged location information is sorted in order to more conveniently grasp the stored voice data.

The detecting unit 108 detects whether the same voice data as the voice data to be converted by the voice converting unit 104 is stored in the voice data storing unit 107 prior to the voice data conversion of the voice converting unit 104. [ In other words, when the route currently searched by the route searching unit 102 matches the route searched for in the past by the route searching unit 102, the voice converting unit 104 stores the same voice data There is inefficiency in performing the same operation repeatedly because voice data conversion is performed.

Therefore, the detecting unit 108 compares the position information on the electronic map extracted by the extracting unit 103 with the position information tagged with the voice data stored in the voice data storing unit 107, 102 detects whether the voice data for the route currently searched for is stored in the voice data storage unit 107. [

The voice conversion control unit 109 determines whether the voice data for the path currently searched for by the path search unit 102 is stored in the voice data storage unit 107, The voice conversion unit 104 instructs the extraction unit 103 not to perform the voice data conversion operation of the extracted text information. Therefore, it is efficient to utilize the voice data for the route that has been searched in the past and to prevent duplication and storage of voice data for the same route.

The voice data selection unit 105 refers to the current position of the route guidance terminal 200 when there are a plurality of voice data for the route searched by the route search unit 102, The voice data to be provided to the user is selected.

The voice data selection unit 105 can select all of a plurality of voice data when selecting voice data to be transmitted. However, when the data size of the entire voice data is large, the voice data selection unit 105 can increase the network load and requires a long transmission time .

Therefore, it is preferable that the receiving unit 101 selects the voice data of a predetermined route section by referring to the current position of the route guidance terminal 200 received. For example, if the entire path searched by the path search unit 102 is "0-> 1-> 2-> 3-> 4-> 5-> 6-> 7-> 8-> 9" It is assumed that the current position of the route guidance terminal 200 is "1.5 " and located in the middle of the section" 1- > 2 " At this time, the voice data selection unit 105 selects at least one voice data among the voice data having the tagged position information in the section from the current position "1.5" of the route guidance terminal to the destination "9" of the route. That is, it is preferable to select a predetermined number of pieces of voice data corresponding to the tagged position information 2 to 9, and to select voice data in the order in which position information adjacent to the current position "1.5 " is tagged.

When the administrator sets 20 the number of audio data selected by the audio data selecting unit 105 at a value arbitrarily set by the administrator, 20 audio data sets are transmitted at one time.

Alternatively, if it is determined that the network load is not large in consideration of the network load and the transmission speed at the present time of transmitting the voice data, a plurality of voice data is transmitted at a time. If the network load is excessive, . Therefore, when voice data providing server 100 provides voice data to a plurality of route guidance terminals, there is an advantage of distributing network resources evenly.

The providing unit 106 transmits at least one or more voice data selected by the voice data selecting unit 105 to the route guidance terminal 200. It is preferable that the communication interface of the providing unit 106 uses a communication standard corresponding to the receiving unit 101. [

When the providing unit 106 transmits a plurality of pieces of voice data, position information tagged in the voice data is transmitted in the order adjacent to the current position of the route guidance terminal 200. Therefore, the route guidance terminal 200 can receive the voice data in the order to be outputted first from the voice data providing server 100. [

 When the text information of the electronic map stored in the electronic map database 110 is changed after the voice data conversion of the voice conversion unit 104, the update processing unit 111 causes the voice conversion unit 104 to convert the voice data .

When the administrator of the voice data providing server 100 updates the electronic map of the electronic map database 110, the update processing unit 111 recognizes that the electronic map of the electronic map database 110 has been updated.

For example, the update processing unit 111 stores the version information or the update date and time of the electronic map in the electronic map database 110, and updates the version information or update date and time of the electronic map in the electronic map database 110 The update processing unit 111 determines that the electronic map of the electronic map database 110 has been updated if it is inconsistent with the stored version information or update date and time.

When the update processing unit 111 recognizes that the electronic map is updated, the route search unit 102 causes the route searching unit 102 to search for the route again based on the updated electronic map. The update processing unit 111 causes the extracting unit 103 to extract the text information from the updated electronic map with respect to the path re-searched by the path searching unit 102. [

The update processing unit 111 compares the text information extracted from the updated electronic map by the extraction unit 103 with the text extracted by the extraction unit 103 from the existing electronic map to determine whether or not there is inconsistent text information. The update processing unit (111) causes the speech converting unit (104) to convert the inconsistent text information into speech data if there is inconsistent text information.

Through the above-described process, the path data providing server 100 can update the voice data based on the updated electronic map and provide the updated voice data to the route guidance terminal 200.

That is, since the voice data is managed by the voice data providing server 100, the user of the route guidance terminal 200 can receive the latest voice data without updating the route guidance terminal 200 directly.

2 is a view illustrating a route guidance terminal according to an embodiment of the present invention.

Referring to FIG. 2, the route guidance terminal 200 guides the route to the user based on the voice data received from the voice data providing server 100. The route guide terminal 200 includes a route search request unit 201, a current location providing unit 202, a voice data receiving unit 203, an output position determination unit 204, a voice data output unit 205, 206 and a user input interface 207.

The position determination unit 206 determines the current position of the route guidance terminal 200 based on the GPS signal. The position determination unit 206 can grasp the current position using the 2G, 3G, and 4G mobile communication signals or the wireless Internet signals in addition to the GPS signals.

The user input interface 207 is an interface for receiving information input by the user of the route guidance terminal 200, and receives a request of the user including the source or destination information. The user input interface 207 may be realized through a keypad or a touch panel. When the path guide terminal includes an LCD or an LED display device (not shown), the user input interface 207 may be integrated with the screen display device.

The route search request unit 201 is a signal including the source information and the destination information that the user of the route guidance terminal 200 inputs to the user input interface 207 and transmits the route search request to the voice data providing server 100, To the voice data providing server 100, a route search signal requesting to search for a route. The route search signal refers to the description of the receiving unit 101 in Fig. 1 described above.

If the route search request unit 201 does not have a separate source entry in the user input interface 207, the source is the current location of the route guidance terminal 200 that the location determination unit 206 has determined.

The current location providing unit 202 transmits the current location of the route guidance terminal 200 that the location determination unit 206 has determined to the voice data providing server 100. [ The present location providing unit 202 transmits the current location in order to allow the voice data providing server 100 described in FIG. 1 to select and provide voice data suitable for the current location of the route guidance terminal 200.

The current location providing unit 202 may further include a packet for requesting voice data transmission along with the current location to the voice data providing server 100. [ For example, when the voice data providing server 100 is set to transmit the voice data upon receiving the packet "BB ", the current position providing unit 202 stores the information of the current position, Packets can be transmitted together.

The voice data receiving unit 203 receives voice data including voice information for guiding the route as voice data to be transmitted by the voice data providing server 100. [ The position information tagged by the voice data providing server 100 is recorded in the voice data received by the voice data receiving unit 203. The tagged location information is used as a basic data for determining the location where the voice data is output. The voice data receiving unit 203 may include a separate recording medium (not shown) for storing the received voice data.

The output position determination unit 204 determines a position at which the audio data received by the reception unit 203 is to be output. The output position determination unit 204 uses the position information tagged with the current position and the voice data that the position determination unit 206 has determined to determine the output position of the voice data.

For example, when the voice data providing server 100 searches for a path of "0 -> 1-> 2-> 3-> 4-> 5-> 6-> 7-> 8 -> 9" The current position of the route guide terminal 200 is located at the middle of the section "1- > 2" as "1.5 ", and the voice data reception section 203 receives It is assumed that data is received. In this case, when the route guidance terminal 200 moves and the current position reaches "2 ", the output position determination unit 204 outputs the voice data whose tagged position information is" 2 " And instructs the audio data output unit 205 to output the audio data. As another method, if the route guidance terminal 200 is positioned within a radius within a certain range at the position of "2 " before the route guidance terminal 200 reaches the position of" 2 " It is possible to instruct the audio data output unit 205 to output the tagged audio data of the position information of "2 ".

The audio data output unit 205 delivers the audio data whose output is determined in accordance with an instruction from the output position determination unit 204 to the user. That is, audio data is reproduced. The audio data output unit 205 includes an audio data reproducing module (not shown) for converting the digital signal of the received audio data into an analog electric signal, and a speaker device (not shown) for outputting the audio signal converted by the audio data reproducing module Hour).

3 is a flowchart illustrating a route guidance system according to an embodiment of the present invention.

Referring to FIG. 3, the route guidance system of the present invention includes a voice data providing server 100 and a route guidance terminal 200. The voice data providing server 100 and the route guidance terminal 200 exchange data through a wireless network.

It is presumed that the user of the route guidance terminal 200 previously inputs a destination to which the route guidance terminal 200 wants to reach before each step below.

First, the route guidance terminal 200 grasps its current position based on the GPS signal (S301).

The route guidance terminal 200 transmits a route search request signal including a source and a destination to the voice data providing server 100 (S302).

The voice data providing server 100 searches the electronic map database 110 for a route from the origin to the destination based on the received route search request signal (S303).

The voice data providing server 100 extracts text information and location information on the searched route from the electronic map (S304).

The voice data providing server 100 converts the extracted text information into voice data, and tags the extracted location information in the converted voice data (S305).

The route guidance terminal 200 transmits the current location to the voice data providing server 100 (S306).

The voice data providing server 100 selects at least one voice data having the tagged position information in the section from the current position to the destination of the route guidance terminal 200 at step S307.

The voice data providing server 100 transmits the selected voice data to the route guidance terminal 200 (S308).

The route guidance terminal 200 grasps the output position of the voice data on the basis of the position information tagged with the received voice data and its current position (S309).

When the current position of the route guidance terminal 200 matches the output position of the voice data, the route guidance terminal 200 outputs the voice data in operation S310.

In the route guidance system of the present invention, for convenience of explanation, one route guidance terminal is exemplified. However, a plurality of route guidance terminals can receive voice data from one voice data providing server. In order to identify each of the plurality of route guidance terminals, the voice data providing server has a unique identifier such as a MAC address, an IP address, Can be utilized.

4 is a flowchart illustrating a method of providing voice data according to an embodiment of the present invention.

Referring to FIG. 4, the voice data providing server 100 searches for a route from a departure point to a destination based on the departure point information and the destination information received from the route guidance terminal 200 (S401). The voice data providing server 100 refers to the electronic map stored in the electronic map database 110 when searching for a route.

The voice data providing server 100 extracts at least one piece of text information and position information including letters, numbers, or symbols that guide the travel of the searched route from the electronic map (S402).

The voice data providing server 100 compares the extracted position information and the tagged position information with the voice data stored in the voice data storing unit 107 and stores the voice data corresponding to the detected route in the voice data storing unit 107 It is detected whether it is already stored (S403).

The voice data providing server 100 omits the voice conversion of the extracted text information when the voice data guiding the route is detected by the voice data storing unit 107. [

The voice data providing server 100 converts the extracted text information into voice data if the voice data guiding the route is not detected by the voice data storing unit 107 and tagging the extracted position information in the voice data, (S404).

The voice data providing server 100 catalogs the converted voice data based on the tagged position information and stores the list in the voice data storing unit 107 (S405).

The voice data providing server 100 selects at least one voice data having tagged position information in a section from the current position received from the route guidance terminal to the destination among the voice data stored in the voice data storing section 107 S406).

The voice data providing server 100 provides at least one selected voice data to the route guidance terminal 200 (S407).

When the text information included in the electronic map is changed, the voice data providing server 100 performs voice data conversion based on the changed text information to update the voice data (S408).

5 is a flowchart illustrating a method of providing voice data according to an embodiment of the present invention.

Referring to FIG. 5, the route guidance terminal 200 determines its current position based on the GPS signal (S501).

The route guidance terminal 200 transmits a route search request signal including destination and destination information to the voice data providing server 100 (S502).

The route guidance terminal 200 provides the voice data providing server 100 with its current location based on the GPS signal (S503).

The route guidance terminal 200 receives at least one route guidance voice data tagged with location information from the voice data providing server 100 (S504).

The route guide terminal 200 determines the output position of the voice data based on the current location and the location information tagged with the voice data (S505). See FIG. 2 for a method of determining the output position.

When the current position of the route guidance terminal 200 matches the determined output position, the route guidance terminal 200 outputs the voice data by voice (S506).

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like. The computer-readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner.

Claims (12)

A route search unit for searching for a route from the departure point to the destination based on the departure point information and the destination information received from the route guidance terminal;
An extracting unit for extracting text information including location information for each point located on the searched route and a character string for guiding the traveling;
A voice conversion unit for converting the extracted text information into voice data and tagging the voice data with the position information;
A voice data selection unit for selecting voice data having positional information in a section from a current position received from the route guidance terminal to the destination;
A providing unit for providing the selected voice data to the route guidance terminal;
A voice data storage unit for listing and storing voice data based on the tagged location information;
A detecting unit for detecting whether voice data guiding the route searched by the current route searching unit is already stored in the voice data storing unit by referring to the positional information tagged in the voice data stored in the voice data storing unit; And
And a voice conversion control unit for omitting voice data conversion of the voice conversion unit if voice data for guiding the voice data already exists in the voice data storage unit. 2. The method of claim 1, wherein the location information tagging of the voice conversion unit
And the location information is recorded in a file name of the voice data. delete The method according to claim 1,
An electronic map database storing an electronic map including the text information and the location information; And
And an update processor for instructing the speech converter to convert the changed text information to speech data when the text information included in the electronic map is changed after the speech data conversion for the path. server. A route search requesting unit for transmitting a route search request signal including a destination and destination information input by the user to the voice data providing server;
A current position providing unit for providing the current position of the user, which is determined based on the GPS signal, to the voice data providing server;
A voice data receiving unit for receiving voice data in which location information is tagged within a period from the current location to the destination from the voice data providing server; And
And an output position determiner for determining an output position of the voice data based on a real time current position and position information tagged in the voice data, wherein the voice data providing server transmits the voice data to a list An audio data storage unit for storing the audio data; A detecting unit for detecting whether voice data guiding the route searched by the current route searching unit is already stored in the voice data storing unit by referring to the positional information tagged in the voice data stored in the voice data storing unit; And a voice conversion control unit for omitting voice data conversion of the voice conversion unit when the voice data for guiding the route already exists in the voice data storage unit. 1. A route guidance system including an audio data providing server and a route guidance terminal,
The voice data providing server searches for a route based on the departure point information and the destination information received from the route guidance terminal, and extracts text information for guiding travel of the location information and the route for each point located on the search route Converts the extracted text information into voice data, tagging the extracted location information with the voice data, and selects voice data having location information in a section from the current position to the destination of the route guidance terminal To the route guidance terminal,
Wherein the voice data providing server comprises: a voice data storage unit for listing and storing voice data based on the tagged location information;
A detecting unit for detecting whether voice data guiding the route searched by the current route searching unit is already stored in the voice data storing unit by referring to the positional information tagged in the voice data stored in the voice data storing unit; And
And a voice conversion control unit for omitting voice data conversion in the voice conversion unit if the voice data for guiding the route already exists in the voice data storage unit, And determines an output position of the voice data on the basis of the positional information tagged in the transmitted voice data and the real-time current position. A method for providing voice data at a voice data providing server,
A route searching step of searching for a route from the departure point to the destination based on the departure point information and the destination information received from the route guidance terminal;
An extracting step of extracting text information including location information of each point located on the searched route and a character string that guides a travel of the searched route;
A voice conversion step of converting the extracted text information into voice data and tagging the extracted voice data with the extracted position information;
A voice data selecting step of selecting voice data having positional information in a section from a current position received from the route guidance terminal to the destination;
Providing the selected at least one voice data to the route guidance terminal;
A voice data storing step of storing voice data in the voice data storage unit by listing the position information based on the tagged position information;
A detecting step of detecting whether voice data guiding the route that the current route searching unit has already been stored is already stored in the voice data storing unit by referring to the positional information tagged in the voice data stored in the voice data storing unit; And
And a voice conversion control step of omitting voice data conversion of the voice conversion unit when voice data for guiding the voice data already exists in the voice data storage unit. delete delete delete 8. The method of claim 7,
And an update processing step of performing speech data conversion based on the changed text information when the text information included in the electronic map is changed after speech data conversion for the path.
delete

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