KR20110047517A - Audio system of mobile device and its channel tuning method - Google Patents

Abstract

The present invention relates to an audio system of a mobile device having a GPS information receiving function. The present invention relates to a GPS module, a storage unit in which a broadcast list table corresponding to a plurality of radio station names and frequency information is stored in advance, and a radio function execution is input. And an audio device for displaying at least one radio station name in a region corresponding to a current GPS position provided from the GPS module, and setting a frequency of the input station name when the broadcast station name is input to output a radio broadcast. Accordingly, in an audio system of a mobile device such as a vehicle, the names of a plurality of broadcast stations that can be received in a specific area are displayed by using the area information received from the GPS, and when the user inputs a desired broadcast station name, the corresponding broadcast station name is input. Can be set to radio frequency.

Vehicle, radio, GPS, voice recognition, local recognition, station name, frequency, display,

Description

AUDIO SYSTEM FOR MOBILE APPARATUS AND METHOD FOR TUNING RADIO CHANNEL THEREOF}

The present invention relates to a mobile device having a GPS information receiving function, and more particularly, to an audio system of a mobile device having a GPS information receiving function and a channel tuning method thereof.

In general, an audio device installed in a mobile device such as a vehicle receives a radio broadcast signal and outputs an audio signal based on the radio broadcast signal to the speaker. In order to select a desired radio broadcast channel, the user changes the reception frequency band of the tuner unit by using the frequency adjustment button.

The user may preset a number of radio broadcast channels which are frequently heard in shortcut keys (ie preset keys). As a result, the user can listen to the preset radio station by simply inputting the corresponding shortcut key.

In general, however, in order to use the preset function of a radio broadcast channel, the user directly searches for the radio broadcast channel one by one using the frequency control button, and then registers the searched broadcast channel to the preset key by operating a function key. Should be.

As described above, in the case of the conventional audio device, it is very cumbersome because the user has to directly manipulate the conventional audio device by hand in order to select a desired radio broadcasting channel. In addition, since the user cannot concentrate on driving due to the operation of the audio device for selecting a radio broadcast channel, it is difficult to ensure safe driving.

On the other hand, various devices using speech recognition have been recently developed. Generally, a speech recognition apparatus has a dictionary for recognizing speech and calculates a similarity degree between an input speech and words (for example, words) registered in the dictionary. If a word having the highest similarity can be extracted from a certain degree of similarity, the speech recognition apparatus recognizes that the input voice is the extracted word. Such voice recognition devices are used in devices of various technical fields.

The present invention can automatically display the names of a plurality of radio stations in the area where the mobile device is currently located when the mobile device is tuned while moving. An audio system of a mobile device and a channel tuning method thereof are provided. Another object of the present invention is to provide an audio system of a mobile device and a channel tuning method thereof, which can use a voice recognition function without a user's direct manipulation when operating a radio broadcasting function or inputting a desired station name.

According to an embodiment of the present invention, an audio system of a mobile device having a GPS information receiving function includes a GPS module and a storage unit in which a broadcast list table corresponding to a plurality of radio station names and frequency information for each region is prestored. An audio device for displaying a name of at least one radio station in an area corresponding to a current GPS position provided from the GPS module when an execution is input; and outputting a radio broadcast by setting a frequency of the input station name when a broadcasting station name is input. do.

The audio device includes an input unit for executing a radio function and selecting a broadcast station name, a tuner unit for tuning a radio channel, a storage unit for storing a broadcast list table including a plurality of regional station names and frequencies, an audio reproducing unit, and a video reproducing unit. Preferably includes a speaker, a display, and an audio control.

The input unit may include a microphone for inputting a user voice, and the audio device may further include a voice recognition unit configured to receive a user voice and output a voice signal, and the audio controller may include a region corresponding to a current GPS position in the broadcast list table. It is effective to search the names of a plurality of broadcasting stations broadcasted in and output the search results to the display unit.

The audio control unit receives information on the broadcast station name from the voice recognition unit, and transmits a broadcast selection signal including radio frequency information corresponding to the broadcast station name based on the broadcast list table stored in the storage unit. It is preferable to have a GPS information receiving function to output.

The audio processor converts an input audio signal input from the microphone into input audio data in response to a mode control signal input from the audio controller, outputs the input audio data to the voice recognition unit, and outputs broadcast audio data input from the audio controller. It is effective to convert the broadcast audio signal to the speaker.

The voice recognition unit operates in a radio reception mode under the control of the audio control unit, recognizes a user's voice based on the input audio data in the radio reception mode, and selects a corresponding broadcasting station name selected by the user based on the recognition result. It is preferable to output the information to the audio control unit.

According to another embodiment of the present invention, a channel tuning method for an audio system of a mobile device having a GPS information receiving function, comprising: pre-storing radio station names and frequency information corresponding to regions; Receiving current GPS location information from a GPS module when executing a radio function; Extracting and displaying at least one radio station name in a region corresponding to a current GPS position; Receiving a predetermined broadcast station name; And tuning the radio by setting a frequency of the input broadcast station name.

With this configuration, when the user of the mobile device selects a radio channel while moving, the user can automatically know the names of a plurality of radio stations in the current location, and when the desired station name is input, the radio is automatically tuned to a frequency corresponding to the input station name. Can be tuned into. In addition, when operating the radio broadcasting function or inputting the desired broadcasting station name, the voice recognition function may be used without direct manipulation of the user.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description, when there is a risk of unnecessarily obscuring the gist of the present invention, a detailed description of well-known functions and configurations will be omitted.

When the radio broadcasting function is operated in an audio system of a mobile device such as a vehicle, the present invention displays a list of names of a plurality of radio stations in the region where the vehicle is currently located, and inputs a desired station name based on the GPS position information. The radio is automatically tuned to a frequency corresponding to the input station name. In addition, when operating the radio broadcasting function or inputting the desired broadcasting station name, the radio broadcasting function is performed using the voice recognition function without the user's direct manipulation.

Hereinafter, with reference to the drawings will be described an embodiment of the present invention;

1 is a block diagram illustrating a simplified configuration of an audio device according to an embodiment, and FIG. 2 is a block diagram illustrating a simplified configuration of an audio device according to another embodiment. 3 is a flowchart illustrating a channel tuning method of an audio device according to the embodiment of FIG. 2, and FIGS. 4A to 4D show a list of local radio station names according to an embodiment.

As shown in FIG. 1, an audio system of a mobile device having a GPS information receiving function includes a GPS (Global Positioning System) module 10, an audio device 30, a display unit 50, and a speaker 60. The audio device 30 includes an input unit 31 that recognizes a user's voice, a storage unit 32, a tuner unit 35, an audio reproduction unit 36, a video reproduction unit 37, and an audio processing unit 38. do.

The GPS module 10 is based on position data received from Global Positioning System (GPS) satellites (not shown) in response to a position request signal PREQ input from the audio control unit 34 of the audio device 30. To calculate the current position and output the positional information based on the current position to the audio control unit 34.

In addition, the GPS module 10 calculates the current position based on the position data received from the GPS satellites, even in the navigation mode. The GPS module 10 then outputs video data including a map screen indicating the calculated current position or a route to a destination selected by the user to the display unit 50, and guide audio data related to the video data. Is output to the audio processor 38.

The audio processor 38 converts the broadcast audio data BAUDAT input from the audio controller 34 into a broadcast audio signal BAU and outputs it to the speaker 60.

The input unit 31 includes a mode selection key (not shown), and outputs one of the mode selection signals MSEL to the audio controller 34 according to the input of the mode selection key. The input unit 31 further includes a plurality of input keys (not shown), and outputs key input signals KIN according to the input of the plurality of input keys.

The storage unit 32 stores a broadcast list table including information on preset broadcast station names corresponding to radio broadcast channels in each region and radio frequency information for each region corresponding to each of the broadcast station names. .

The audio control unit 34 receives location information from the GPS module 10, and the audio control unit 34 recognizes a corresponding region based on the GPS position information, and obtains radio frequency information corresponding to the corresponding broadcasting station name of the corresponding region. The broadcast list table stored in the storage unit 32 is searched and output to the display unit 50. For example, when the GPS location information indicates the 'metropolitan area' corresponding to the Seoul / Incheon / Gyeonggi area, the audio controller 34 names a plurality of broadcasting stations in the Seoul area based on the broadcast list table of the storage unit 32. For example, the list of 'KBS1', 'KBS2', 'MBC', 'SBS', 'CBS', etc. forms a list of local broadcasting station names, outputs them to the display unit 50, and the location information indicates the 'Jeonju' region. When the plurality of broadcasting station names in the Jeonju region, 'KBS1', 'KBS2', 'MBC', 'Jeonju broadcasting', 'CBS', 'original sound broadcasting' list the local broadcasting station name list display unit 50 Output to.

The audio controller 34 receives a selection signal from the input unit 31, and outputs a broadcast selection signal including radio frequency information corresponding to the broadcast station name based on the broadcast list table stored in the storage unit 32. ) For example, when the broadcasting station name is' MBC 'in the metropolitan area, the radio frequency information searched by the audio control unit 34 based on the broadcasting list table is '95 .9 MHz'.

Meanwhile, in a specific region (eg, a boundary region between a plurality of regions), there may be a plurality of radio frequencies corresponding to one broadcasting station name. The audio controller 34 includes a list of the found radio frequency information when a plurality of radio frequency information is found as a result of searching for radio frequency information corresponding to the name of the corresponding broadcasting station of the region in the broadcast list table. The video data to be output is output to the display unit 50. In this case, the display unit 50 may display a frequency selection screen indicating a list of the retrieved plurality of radio frequency information based on the video data.

The audio controller 34 selects one of a plurality of retrieved radio frequency information in response to the key input signals KIN input from the input unit 31, and according to the selected radio frequency information, the frequency of the tuner unit 35. Set.

The audio control unit 34 outputs the broadcast audio data BAUDAT input from the tuner unit 35 to the audio processing unit 38. In addition, the audio controller 34 outputs video data VDAT to the display unit 50 in the radio reception mode.

The audio controller 34 operates in the audio mode in response to the mode selection signal input from the input unit 31 and outputs audio data to the speaker 60. In addition, the audio controller 34 operates in the video mode in response to the mode selection signal input from the input unit 31 and outputs the video data to the display unit 50.

The tuner unit 35 receives one of a plurality of radio frequency signals in response to a broadcast selection signal input from the audio control unit 34, and based on one of the received radio frequency signals, the tuner unit 35 receives the broadcast audio data. It outputs to the audio control part 34.

The audio reproducing unit 36 operates in response to the mode control signal input from the audio control unit 34 or detects that the audio storage medium is inserted. The audio reproducing section 36 reads out the reproduced audio data from the audio storage medium and outputs it to the audio control section 34.

The video player 37 operates in response to a mode control signal input from the audio controller 34 or detects that a video storage medium is inserted. The video reproducing section 37 reads the reproduced audio data and the reproduced video data from the video storage medium and outputs them to the audio control section 34.

The audio control unit 34 outputs a mode control signal to the audio reproducing unit 36 in the audio mode. The audio control unit 34 outputs the reproduced audio data input from the audio reproduction unit 36 to the audio processing unit 38. The audio control unit 34 outputs a mode control signal to the video reproducing unit 37 in the video mode. The audio control unit 34 outputs the reproduction audio data input from the video reproduction unit 37 to the audio processing unit 38, and outputs the reproduction video data input from the video reproduction unit 37 to the display unit 50.

The display unit 50 displays a screen related to the operation of the GPS module 10 based on the video data input from the GPS module 10. The display unit 50 displays a screen related to the radio reception mode operation of the audio device 30 based on the video data input from the audio control unit 34.

In addition, the display unit 50 displays a screen related to the audio mode operation of the audio device 30 based on the video data input from the audio control unit 34. The display unit 50 displays a screen related to the video mode operation of the audio device 30 based on the video data input from the audio control unit 34.

According to another embodiment, as shown in FIG. 2, the audio system of the mobile device may further include a microphone 20 and a voice recognition unit 43 for operating a radio function by voice and inputting a desired station name by voice. Can be. Detailed description of components having the same functions as those of FIG. 1 will be omitted.

The microphone 20 converts a user's voice into an input audio signal INAU and outputs it to the audio processor 48. When the user pronounces a radio operation or pronounces a name of a corresponding broadcasting station that the user wants to listen to, the microphone 20 converts the user's voice into an input audio signal and outputs it to the audio processor 48.

The audio processor 48 converts the input audio signal INAU input from the microphone 20 into input audio data INAUDAT in response to the mode control signal MCNT input from the audio controller 44, and then recognizes the voice. Output to (43).

The voice recognition unit 43 operates in the radio reception mode in response to the mode control signal MCNT input from the audio control unit 44. In addition, the voice recognition unit 43 recognizes the user's voice based on the input audio data INAUDAT input from the audio processing unit 48 in the radio reception mode, and selects a corresponding broadcasting station name selected by the user based on the recognition result. It confirms and outputs the information about the broadcast station name to the audio control unit 44.

The audio controller 44 operates in the radio reception mode in response to the mode selection signal MSEL input from the input unit 41, and outputs the mode control signal MCNT to the voice recognition unit 43 and the audio processor 48. do.

In addition, the audio control unit 44 receives information on the broadcast station name from the voice recognition unit 43 and includes radio frequency information corresponding to the broadcast station name based on the broadcast list table stored in the storage unit 42. The broadcast selection signal is output to the tuner section 45. For example, when the GPS location is the metropolitan area, when the corresponding station name is 'MBC', the radio frequency information searched by the audio controller 44 based on the broadcast list table, corresponding to the station name of the corresponding area, is '95 .9 MHz. 'to be.

Thereafter, the audio controller 44 sets the frequency of the radio tuner 45 according to the corresponding radio frequency information in response to the frequency selection signal or the frequency identification number signal input from the voice recognition unit 43.

The audio processor 48 of FIG. 2 converts an input audio signal input from the microphone 20 into input audio data and outputs the input audio data to the voice recognition unit 43. The audio processing unit 48 does not perform an operation for converting the input audio signal INAU into input audio data INAUDAT when not in the radio reception mode.

The voice recognition unit 43 operates in the radio reception mode in response to the mode control signal MCNT. The voice recognition unit 43 recognizes the user's voice based on the input audio data INAUDAT, and confirms the name of the broadcasting station selected by the user based on the recognition result. The voice recognition unit 43 outputs the information on the broadcast station name selected by the user to the audio control unit 44.

The following description will focus on the process of selecting a specific radio station name by voice according to the present embodiment.

First, when a user operates the mode selection key of the input unit 41 to set the audio device 40 to the radio reception mode, the input unit 41 outputs a mode selection signal to the audio control unit 44. The audio controller 44 operates in the radio reception mode in response to the mode selection signal MSEL, and outputs the mode control signal MCNT to the audio processor 48 and the voice recognition unit 43, respectively.

In addition, the audio controller 44 outputs a location request signal to the GPS module 10. The GPS module 10 calculates a current position based on the position data received from the GPS satellites in response to the position request signal, and outputs the position information based on the current position to the audio controller 44.

The audio processor 48 operates in the radio reception mode in response to the mode control signal.

If the current location according to the GPS location information is a specific urban area, the audio controller 44 searches for a plurality of broadcaster names broadcast in the corresponding area in the broadcast list table, and displays the search result along with the radio frequency information on the display unit 50. Output For example, as shown in FIGS. 4A to 4D, if the current GPS position is a 'metropolitan area', the audio control unit 44 may include 'KBS1', 'KBS2', 'MBC', 'SBS', and 'CBS'. By arranging, 'transportation broadcasting', 'education broadcasting', 'national music broadcasting', 'far east broadcasting', 'national military broadcasting', and 'original sound broadcasting', a regional broadcasting list is formed and output to the display unit 50. In addition, if the current position is 'Samcheok / Taebaek' region, the audio controller 44 sorts 'KBS1', 'KBS FM', 'MBC', and 'education broadcasting' to form a local broadcast list on the display unit 50. Output

In addition, if the input signal input through the voice recognition unit 43 is a broadcasting station name identification number, the audio control unit 44 based on the information and the location information of the broadcasting station name selected by the user, the corresponding broadcasting station of the corresponding region. Radio frequency information corresponding to the name is retrieved from the broadcast list table stored in the storage unit 42.

For example, when the GPS station is located in the metropolitan area, when the corresponding broadcasting station name selected by the user is' MBC ', the radio frequency information retrieved by the audio controller 44 is '95 .9 MHz'. The audio controller 44 outputs a broadcast selection signal including radio frequency information retrieved from the broadcast list table to the tuner 45.

Meanwhile, according to the current position, the plurality of radio frequency information may be searched by the audio controller 44 in the broadcast list table. In this case, the audio controller 44 outputs video data including a list of the plurality of retrieved radio frequency information to the display unit 50. The display unit 50 displays a list of the plurality of radio frequency information retrieved based on the video data.

The user checks a list of the plurality of radio frequency information displayed on the display unit 50. As a result of the check, when the user selects a desired broadcasting station name through the input unit 31, the audio controller 44 outputs a broadcast selection signal to the tuner unit 45.

According to another embodiment, when the user pronounces a desired broadcast station name, the voice recognition unit 43 recognizes this and selects one of a plurality of radio station names, and selects a broadcast including the selected radio station name and frequency information corresponding thereto. The signal can be output to the tuner unit 45.

The tuner 45 selects and receives one of radio frequency signals corresponding to radio frequency information included in the broadcast selection signal in response to the broadcast selection signal. The tuner 45 outputs the broadcast audio data to the audio controller 44 based on one of the received radio frequency signals. The audio controller 44 outputs the broadcast audio data BAUDAT to the audio processor 48. The audio processor 48 converts the broadcast audio data BAUDAT into a broadcast audio signal BAU and outputs it to the speaker 60.

Accordingly, the user can operate the radio by voice pronunciation without directly operating the audio device 40 to listen to a desired radio broadcast. In addition, if a plurality of broadcasting station names of the currently located region are checked through the display unit, the broadcasting station names displayed on the display unit are pronounced, and the desired broadcasting station name or the identification number of the broadcasting station name is pronounced, the frequency of the automatically selected broadcasting station name may be set.

3 is a flowchart illustrating a channel tuning method of an audio system according to an embodiment. As shown in FIG. 3, when a user inputs a radio operation as a voice (S1), the audio controller 44 recognizes the radio operation through the microphone 20 and the audio processor 48 (S2). The audio controller 44 receives the GPS location information from the GPS module 10 and recognizes the current moving area (S3). The audio control unit 44 extracts a plurality of broadcast station names in the current region from the storage unit 42, forms a list of local broadcast station names, and outputs the list to the display unit 50. When the user inputs a predetermined broadcasting station name in the local broadcasting station name list by voice (S5), the audio control unit 44 recognizes the broadcasting station name through the microphone 20 and the audio processing unit 48 (S6). The audio controller 44 tunes a radio channel by setting a frequency according to the recognized broadcasting station name (S7).

By such a configuration, in an audio system of a mobile device such as a vehicle, a plurality of broadcasting station names that can be received in a specific region are displayed by using the region information received from the GPS, and when the user inputs the broadcasting station name by voice, It may be set to a radio frequency corresponding to a broadcast station name.

Such a method and apparatus of the present invention have been described with reference to the embodiments shown in the drawings for ease of understanding, but this is merely exemplary, and those skilled in the art may have various modifications and equivalent embodiments therefrom. I understand that it is possible. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

1 is a block diagram illustrating a simplified configuration of an audio device according to an embodiment.

2 is a block diagram illustrating a simplified configuration of an audio device according to another embodiment.

3 is a flowchart illustrating a channel tuning method of the audio device of FIG. 2.

4A to 4D show a list of local radio station names according to one embodiment.

* Explanation of symbols for the main parts of the drawings

10: GPS module 20: microphone

30, 40: audio device 31, 41: input unit

32, 42: storage unit 43: speech recognition unit

34, 44: audio control part 35, 45: tuner part

36, 46: audio player 37, 47: video player

50: display unit 60: speaker

Claims (9)

In an audio system of a mobile device having a GPS position information receiving function, Gps module, A storage unit which stores a broadcasting list table corresponding to a plurality of radio station names and frequency information for each region in advance; An audio device that displays at least one radio station name in a region corresponding to a current GPS position provided from the GPS module when the execution of a radio function is input; and outputs a radio broadcast by setting a frequency of the input station name when a broadcasting station name is input The audio system of the mobile device having a GPS information receiving function comprising a. The method of claim 1, The audio device, An input unit for executing a radio function and selecting a station name, a tuner unit for tuning a radio channel, a storage unit for storing a broadcast list table including a plurality of station names and frequencies for each region, an audio reproducing unit, a video reproducing unit, a speaker, a display unit, An audio system of a mobile device having a GPS information receiving function, comprising an audio control unit. The method of claim 2, The input unit includes a microphone for inputting a user voice, The audio device may further include a voice recognition unit configured to receive a user voice and output a voice signal. And the audio control unit searches for a plurality of broadcast station names broadcast in an area corresponding to a current GPS position in the broadcast list table, and outputs a search result to the display unit. The method of claim 3, The audio control unit receives information on the broadcast station name from the voice recognition unit, and transmits a broadcast selection signal including radio frequency information corresponding to the broadcast station name based on the broadcast list table stored in the storage unit. An audio system of a mobile device having a GPS information receiving function to output. The method of claim 2, The audio processor converts an input audio signal input from the microphone into input audio data in response to a mode control signal input from the audio controller, outputs the input audio data to the voice recognition unit, and outputs broadcast audio data input from the audio controller. An audio system of a mobile device having a GPS information receiving function, which is converted into a broadcast audio signal and output to the speaker. The method of claim 2, The voice recognition unit operates in a radio reception mode under the control of the audio control unit, recognizes a user's voice based on the input audio data in the radio reception mode, and selects a corresponding broadcasting station name selected by the user based on the recognition result. An audio system of a mobile device having a GPS information receiving function for outputting information to the audio control unit. A channel tuning method of an audio system of a mobile device having a GPS position information receiving function, Storing radio station names and frequency information corresponding to regions in advance; Receiving current GPS location information from a GPS module when executing a radio function; Extracting and displaying at least one radio station name in a region corresponding to a current GPS position; Receiving a predetermined broadcast station name; And tuning the radio by setting a frequency of the input broadcast station name. 2. The channel tuning method of an audio system of a mobile device having a GPS position information receiving function. The method of claim 7, wherein And inputting the name of the broadcasting station to recognize and execute a user's voice. The method of claim 7, wherein And executing the radio function by recognizing and executing a user voice. 2. The channel tuning method of an audio system of a mobile device having a GPS location information receiving function.

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