KR100454970B1 - Method for searching facilities in a navigation system - Google Patents

Abstract

The present invention provides a method for searching facilities in a navigation mode in a mobile terminal having a voice recognition function connected to an information center having a database storing map data and a wireless network, wherein the voice recognition mode is selected by one touch. And recognizing a user voice when the voice recognition mode is selected and transmitting a facility search request corresponding to the voice signal to the information center, and when receiving facility information from the information center, voice guidance of the facility information. Characterized in that it comprises the step of displaying.

Description

{METHOD FOR SEARCHING FACILITIES IN A NAVIGATION SYSTEM}

The present invention relates to a navigation system, and more particularly, to a facility search method in a navigation system using a wireless network.

A typical navigation system displays the current position of a moving object calculated using information received from a global positioning system ("GPS") on a map displayed on a display screen. In addition, the navigation system displays various information necessary for driving such as displaying the moving direction of the moving object, the distance to the destination to be traveled, the current moving speed of the moving object, the path set before the driver, the optimum path to the destination, and the like. To provide. Such a navigation system (or GPS positioning device) is currently mounted on various kinds of moving objects such as ships, aircrafts, automobiles, etc., and is widely used to check the current position and moving speed of moving objects or determine a moving path.

Recently, a navigation system for providing a navigation function through a mobile terminal has been developed, and FIG. 1 shows a schematic configuration of such a navigation system.

Referring to FIG. 1, the navigation system includes an information center 100, a wireless network 200, a mobile terminal 300, and an intelligent transportation systems (ITS) terminal 400. The information center 100 stores map data and real-time traffic information. When the navigation function is requested from the mobile terminal 300, the information center 100 generates the corresponding navigation information by referring to the map data and the real-time traffic information. Provided to the mobile terminal 300 through 200. The wireless network 200 is a path for information transmission between the information center 100 and the mobile terminal 300. The mobile terminal 300 not only operates as a mode for providing a voice call service to a user, but also operates in a navigation mode for supporting a navigation function. The mobile terminal 300 is connected to the wireless network 200 in the navigation mode, receives various navigation information provided from the information center 100, and provides the user with navigation information received in conjunction with the ITS terminal 400.

In the navigation mode, the user may set the current location and the destination of the vehicle on the mobile terminal 300 to request the optimal driving route guidance to the information center 100, and the typical navigation function from the information center 100 is set according to the setting. You can be informed of the best travel route between your current location and your destination. In the navigation mode, the user is also connected to the information center 100 through the mobile terminal 300, the surrounding facilities (eg gas station, rest area, maintenance center, bank, hospital / pharmacy, lodging, tourist attractions, restaurants / cafes, Theater / theatre, etc.).

As described above, in the navigation system, a user must operate a key on the mobile terminal 300 to search for surrounding facilities while receiving a route guidance through the mobile terminal 300. Therefore, it is not easy for the driver to search the facility through the mobile terminal while driving, and there is a problem that may cause a traffic accident to try to force the key operation.

Accordingly, an object of the present invention is to provide a facility search method for searching a desired facility by voice through a mobile terminal in a navigation system.

In order to achieve the above object, the present invention relates to an information center having a database for storing map data and a method of searching for a facility in a navigation mode in a mobile terminal having a voice recognition function and connected through a wireless network. Selecting a mode by one touch, recognizing a user voice when the voice recognition mode is selected, transmitting a facility search request corresponding to the voice signal to the information center, and receiving facility information from the information center. It characterized in that it comprises a step of voice guidance or display the facility information.

1 is a view showing the configuration of a general navigation system.

2 is a block diagram of a mobile terminal applied according to an embodiment of the present invention.

3 is a flowchart for searching for a facility using a voice recognition function in a mobile terminal of a navigation system according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

According to the present invention, when a navigation function is provided through a mobile terminal, a desired facility can be searched using a voice recognition function of the mobile terminal. The driver provided with the navigation function may enter a mode for voice input of the facility with a simple key operation while driving. As a result, drivers can easily find nearby facilities, such as gas stations or hospitals, at the shortest distance to the route.

2 is a block diagram of a mobile terminal applied according to an embodiment of the present invention.

Referring to FIG. 2, the controller 10 controls the overall operation of the mobile terminal. The controller 10 is implemented as a one chip microprocessor having a ROM storing a predetermined operating program and a RAM temporarily storing data generated during the execution of the operating program. In addition, the control unit 106 also stores voice data from the voice recognition unit 60 in the voice memory 70 so that the facility can be searched using voice recognition, and the voice data stored in the voice memory 70. And voice data input from the voice recognition unit 60 may be compared.

The memory 20 is an electrically programmable EEPROM, and typically stores option data necessary for performing an operation program. The key input unit 30 includes a plurality of numeric keys and function keys, and outputs key data of the keys to the controller 10. In addition, the key input unit 30 is provided with a key (not shown) for entering the voice recognition mode according to the present invention. The voice recognition key may be one of the keys provided in the existing key input unit, for example, the # key.

The display unit 40 is controlled by the control unit 10, and displays and displays display data on key data input from the key input unit 30 from the control unit 10, and displays an operation state and a plurality of mobile terminals. Displays information in icons and text. In addition, the display unit 40 displays navigation information, for example, a map, a name, a facility, and the like according to the present invention.

The RF unit 50 is a duplexer that transmits and receives a radio signal through an antenna ANT, and is controlled by the controller 10, and receives and demodulates a radio signal received through the antenna ANT from the duplexer. And a receiving unit to be outputted and controlled by the controller 10, receives a predetermined baseband signal, modulates it into a radio signal, and separates the modulated radio signal from a radio signal received by the duplexer. It consists of a transmitter for transmitting through.

The voice recognition unit 60 is controlled by the control unit 10, receives and decodes a baseband signal from the RF unit 50, and outputs voice through the speaker SP if the decoded signal is a voice signal. If it is data, it is decoded and outputted to the control unit 10. In addition, the voice recognition unit 60 encodes and outputs a voice signal input through a microphone MIC as a baseband signal, and processes and outputs data input from the controller 10 as a baseband signal.

The voice recognition unit 60 according to the present invention encodes and outputs a voice signal input through the microphone MIC into voice data when executing a facility search by voice recognition. The voice memory 70 may receive and store voice data output from the voice recognition unit 60 and voice data representing various facilities and voice data for various guide messages according to the present invention.

3 is a flowchart for searching for a facility using a voice recognition function in a mobile terminal of a navigation system according to a preferred embodiment of the present invention.

1 to 3, the control unit 10 of the mobile terminal guides the route at step 502. In detail, when the user sets the current position of the vehicle and the destination to travel in the navigation mode of the mobile terminal 300 and requests the optimal driving route guidance, the information according to the setting is transmitted through the wireless network 200. It is provided to the information center (100). The information center 100 calculates an optimal driving route between the current location and the destination by referring to the map data and real-time traffic information stored therein in response to the request, and guides the calculated optimal driving route. It provides to the mobile terminal 300 through the wireless network (200). When the optimal driving route guidance information is received, the mobile terminal 300 visually and / or audibly provides the received route guidance information to the user in association with the ITS terminal 400. At this time, the visually provided route guidance information is displayed on the display unit of the mobile terminal 300, and the route guidance information provided acoustically is the speaker of the mobile terminal 300 or the speaker of the ITS terminal 400 (or the mobile terminal ( 300) and all speakers of the ITS terminal 400) to the outside. In this driving route guidance service, guidance guidance, voice guidance, guidance point, and remaining distance information to the destination are provided.

Thereafter, the controller 10 of the mobile terminal 300 checks whether the voice recognition key is selected from the key input unit 30 by the user in step 504. This voice recognition key is selected when the user searches for a facility using the voice recognition function. When the user who receives the route guidance from the navigation system wants to search for nearby facilities while driving, if the user simply touches the voice recognition key, the controller 10 proceeds to step 506 and enters the voice recognition mode to recognize the voice from the user. have. Subsequently, the controller 10 converts the voice signal input in step 508 into voice data and transmits a search request for a matching facility in the voice memory 70 to the information center 100. Accordingly, the information center searches for the received facilities while maintaining the destination and provides the mobile terminal 300 with the shortest path to the corresponding facilities.

The controller 10 of the mobile terminal 300 waits to receive information from the information center 100 in step 510 after requesting a search for a facility. When the control unit 10 receives the information on the facility requested to be searched from the information center 100, the controller 10 proceeds to step 512 to check whether the facility is on the route to the destination or whether the facility is off the route to the destination. At this time, if the facility is on the route to the destination, the controller 10 proceeds to step 518 to display information about the facility on the display unit or to provide voice guidance through the speaker.

On the other hand, the controller 10 of the mobile terminal 200, if the facility deviated from the route to the destination proceeds to step 514 to indicate to the user that the facility is not the route to the destination on the voice guidance or display, and from the user You will be asked to enter the facility by voice. That is, the user notifies the mobile terminal 300 of whether to proceed to the nearest facility searched or proceed without departing the route to the destination. If the user does not want to deviate from the route to the destination, search for the next closest facility in step 517 and then return to step 512. If the user wants to proceed to the facility in step 516, the controller 10 proceeds to step 518 and provides a path to the facility through the display unit or the speaker regardless of the deviation from the path to the destination. Subsequently, the controller 10 guides the route to the facility in step 519 and terminates the guidance when the facility arrives. After that, if the user wants to be guided again, the controller 10 may set the rerouting by receiving new data from the information center 100 to search for the rerouting to the original destination.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

As described above, the driver can search the facilities by voice while driving, so that the facilities to be searched during the operation of the destination can be done without using the hand. Accordingly, the driver can eliminate the inconvenience of searching around or manually searching for facilities during driving.

Claims (2)

Claims [1] A method for searching for a facility during a navigation mode operation in a mobile terminal having a voice recognition function connected to an information center having a database storing map data and a wireless network. The voice recognition mode is selected by one touch, Recognizing a user voice and transmitting a facility search request corresponding to the voice signal to the information center when the voice recognition mode is selected; Receiving facility information from the information center; And determining whether or not the facility is on a path to a destination by voice guiding or displaying the facility information. The method of claim 1, further comprising: notifying the user if the received facility information is not on a route to a destination and being instructed by voice whether to leave the route from the user to the destination and proceed to the facility. Facility search method.