JP5295699B2 - Car audio system - Google Patents

Description

  The present invention relates to an in-vehicle audio apparatus having a function of displaying music information such as a music title as well as reproducing music data.

  In recent years, music has been listened to by connecting a portable audio device storing audio information for reproduction to an in-vehicle audio device.

  The music data recorded in such a portable audio device includes tag data in which information such as the music title and artist is described together with the music digital data. The title of the music being played based on the tag data is displayed on the display screen. Characters such as titles to be displayed are recorded with a predetermined character code, but if the character code at the time of recording is not compatible with the display device, the original characters are not displayed and so-called garbled characters are displayed. Will occur. Note that “garbled characters” is a phenomenon in which the original character becomes another character such as an enumerated sequence of unintelligible symbols. For reading a character code different from the original character code, This is caused by the lack of a character code.

  Character codes include JIS codes standardized by JIS (Japanese Industrial Standards) and ASCII standard as 1-byte character codes. In addition, the standardization of Unicode, which is a unified character code system, has been used and advanced. As described above, there are various character codes. For example, when a character described using a character code other than Unicode is displayed in a device that employs Unicode, a correct character may not be displayed.

Various investigations have been made to deal with such garbled characters. As a technology related to this, in Patent Document 1, image data of correct characters is created for characters that are not displayed correctly, and when the characters are not displayed correctly, the correct image data is transmitted to the display control unit. A device for displaying characters is described.
JP 2005-276256 A

  As described above, when the information described in the tag data is not displayed correctly, it is possible to display it correctly by preparing a correct character instead.

  However, it is unrealistic to prepare characters that are displayed correctly for all characters. In addition, it is difficult to detect whether or not the characters displayed by the control unit of the apparatus are correctly displayed, and when the garbled characters are detected, the processing load is heavy. turn into.

  On the other hand, in the case of an in-vehicle electronic device, priority should be given to processing for navigation and safety support, and if the CPU is burdened with display processing as described above, processing for safe driving May have a negative effect.

  The present invention has been made in view of the problems of the prior art, and provides an in-vehicle audio device that can eliminate the difficulty of viewing characters that are garbled and displayed by simple processing with a light processing burden. The purpose is to do.

In order to solve the above-described problems of the prior art, according to the basic form of the present invention, an in-vehicle audio apparatus that is communicably connected to an external device that stores music data for reproduction, the music data A display means for displaying accompanying music information on the screen, an input means for inputting a user instruction, and a predetermined character string corresponding to a character code set handled in the in-vehicle audio apparatus for garbled characters are registered. Storage means storing the garbled correction table, and control means for acquiring the music data and music information from the external device, the control means according to a user instruction received via the input means When it is determined that the character displayed on the screen is garbled, a predetermined character string that is not garbled with reference to the garbled correction table And displays in place of the character conversion to which the string garbled on the screen, when there is an instruction to cancel the conversion to the predetermined character string through said input means, on the screen An in-vehicle audio device is provided that displays a character string before conversion .

  In the in-vehicle audio apparatus according to this aspect, the input means includes a microphone that recognizes a predetermined button that indicates that the character is garbled, or a word that indicates that the user's utterance is garbled, and Voice recognition means, and the control means, when the button is selected in a state where the music information of a predetermined item is displayed on the screen, or when the predetermined word is recognized, It may be determined that the content of the item displayed on the screen is garbled and the content of the item is converted into a predetermined character string that is not garbled.

  In the in-vehicle audio apparatus according to this aspect, the song information includes items of song name, artist name, album name, and genre, and the predetermined character string is an item name of the song information. The control means may convert each garbled character into an identifiable name including the item name when there are a plurality of garbled characters in each item of the music information. The control means acquires the music information from the external device, stores it in the storage means, and corrects the garbled character when it is determined that the garbled character is displayed on the screen. Then, while displaying on the screen, the garbled character stored in the storage means may be converted into a corrected character.

  According to the in-vehicle audio device of the present invention, when music information is acquired from an external storage device or portable audio device connected to the device and the music information is displayed on the display unit, the music information is garbled. When it is recognized by the user's instruction, the garbled part is converted into a garbled character and displayed. Characters that are not garbled are item names or the like of information attached to music data that is defined in advance and stored in the storage unit. In this way, the detection of garbled characters depends on the user, and the characters that are not garbled are also defined in advance, so the burden on the control unit of this device can be reduced as much as possible and the screen display can be efficiently viewed. Can be eliminated.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(1) First Embodiment FIG. 1 shows a configuration of an in-vehicle audio device 100 according to an embodiment of the present invention, together with a portable audio device 200 or an external storage device 300 connected to the device 100. . In this embodiment, an iPod (registered trademark: a digital music player manufactured by Apple Computer) is used as an example of the portable audio device 200, and a USB memory is used as the external storage device 300. The in-vehicle audio apparatus 100 and the iPod 200 or the USB memory 300 are connected via a USB cable or a USB connector.

  As shown in FIG. 1, the in-vehicle audio apparatus 100 according to the present embodiment has a CPU (control unit) 2, a communication unit 1, a music information storage unit 9, and a garbled correction as a configuration related to the present invention. A table 10, a display unit 5, an operation unit 8, an amplifier 3, a speaker 4, a voice recognition processing unit 6, and a microphone 7 are provided.

  The music information storage unit 9 stores music information acquired from the USB memory 300. This music information includes a file path indicating where the music data is stored in the music storage unit 18 of the USB memory 300, and the artist name and title name recorded in the tag data of the music information.

  In the garbled correction table 10, specific display by character codes corresponding to the present apparatus is defined for each item (artist name, title name, album name) for which music information is to be displayed. .

  The music information storage unit 9 and the garbled correction table 10 may be stored separately in a storage unit composed of a hard disk, a semiconductor memory, or the like.

  The operation unit 8 is used by the user to give various operation instructions to the in-vehicle audio apparatus 100, and includes various operation keys. For example, although not shown, a key for selecting various on-vehicle audio sources, a key for adjusting the volume, a key for displaying various menus, and the like are provided. As related to the present invention, there is provided a “character correction” button for notifying the vehicle audio apparatus 100 when the user notices garbled characters, as will be described later.

  The voice recognition unit 6 analyzes the user's utterance voice input through the microphone 7, and detects that a predetermined word is uttered. Similar to general recognition processing, speech recognition is performed by acoustically analyzing the input speech to calculate feature quantities, and an acoustic model (previously converted into data and stored in memory) corresponding to the utterance is extracted from the feature quantities. To do. Of these acoustic models, those that match the words in the dictionary stored in the memory in the control unit 2 or the speech recognition unit 6 in advance are used as the recognition results. In the present embodiment, the predetermined word is, for example, one word “garbage”, thereby reducing the burden of voice recognition processing.

  The display unit 5 is configured by a liquid crystal panel, an organic EL panel, or the like, and displays menu items based on operation contents performed using the operation unit 8 and information acquired from an external device such as the iPod 200 or the USB memory 300. To do. The display unit 5 is provided with a touch panel on the screen, and is configured with various buttons paired with the display content of the display screen. The touch panel serves as an input device for selecting a menu or the like indicated by these various buttons. In the present embodiment, characters corresponding to the Unicode character code set are displayed on the screen of the display unit 5.

  The communication unit 1 performs a process of transmitting and receiving data between the in-vehicle audio device 100 and the external device (200, 300).

  The amplifier 3 performs a process of amplifying audio signals input from various music sources recorded in the iPod 200 or the USB memory 300 and supplying the amplified audio signals to the speaker 4.

  The control unit 2 is constituted by a microcomputer, and corresponds to the operation instruction given to the operation unit 8, the communication unit 1, the music information storage unit 9, the garbled correction table 10, the display unit 5, and the entire amplifier 3. To control.

  On the other hand, among the external devices, the USB memory 300 includes, as a configuration related to the present invention, a communication unit 16 that exchanges information with the in-vehicle audio device 100, a music storage unit 18 that stores music data, and a music storage. And a control unit 17 that controls input / output of music data stored in the unit 18 and the communication unit 16. The iPod 200 includes a communication unit 11 that exchanges information with the in-vehicle audio device 100, a music storage unit 15 that stores music data, a playback unit 12 that plays back music and supplies it to the speaker 13, and a music storage unit. 15 includes an input / output unit for music data stored in the control unit 15 and a control unit 14 for controlling the communication unit 11 and the playback unit 12.

  For example, an MP3 format music file distributed via the Internet or the like is once downloaded to a personal computer (PC) and transferred to the music storage unit (18, 15) of the USB memory 300 or iPod 200. Stored music files (data). This music data includes music information (title, artist name, album name, etc.) for specifying the audio information in addition to audio information for reproduction (music information).

  In the in-vehicle audio apparatus 100 configured as described above, when the apparatus 100 and the USB memory 300 are connected, all the music information from the music data stored in the music storage unit 18 of the USB memory 300 is stored in the in-vehicle audio apparatus. 100. On the in-vehicle audio apparatus 100 side, data is stored in the music information storage unit 9 based on the received music information, and a menu is configured and displayed on the screen of the display unit 5. FIG. 2A shows an example of music information stored in the music information storage unit 9. Of the music data stored in the music storage unit 18 of the USB memory 300, music data such as artist, title, album, and genre described in the tag data is extracted and stored. Further, for example, information of a file path (A / T1.mp3) indicating where the music data of artist AR1, title T1, album AL1 is stored in the music storage unit 18 is also stored.

  When the music is selected by the user, the file path information corresponding to the music is transmitted to the USB memory 300, and the audio is output from the speaker 4 through the amplifier 3 while receiving the music data from the USB memory 300. At the same time, information related to the music (artist name, title name, etc.) is extracted from the music information storage unit 9 and displayed on the screen of the display unit 5.

  When the external device is iPod 200, when the apparatus 100 is connected to the iPod 200, the menu is configured with reference to the music data stored in the music storage unit 15 on the iPod 200 side, and the display of the in-vehicle audio device 100 is displayed. It is displayed on the screen of part 5. When the music is selected by the user, the item is transmitted to the iPod 200, and the audio is output from the speaker 4 through the amplifier 3 while receiving the music data from the iPod 200. At the same time, information on the music is extracted from the music storage unit of the iPod and displayed on the screen of the display unit 5.

  In this way, the music information is displayed on the display screen of the in-vehicle audio device 100 based on the information from the external device. At that time, when the user notices that an inaccurate character having an unknown meaning is displayed on the screen and indicates that it is “garbled”, the control unit of the in-vehicle audio device 100 2 displays characters that are not garbled instead of the display contents of each item displayed on the screen of the display unit 5 at the time pointed out.

  In this embodiment, a garbled correction table as shown in FIG. 2B is prepared, and the correspondence between the garbled item names and the characters according to the character codes handled by this apparatus is clarified so as not to garble. Keep it. For example, when the displayed item is the title of a song and the specific title name is garbled, “Title” is displayed instead of the garbled character.

  As described above, when the user points out that the character displayed on the screen is garbled, the in-vehicle audio device 100 performs a process of detecting whether or not the displayed character is garbled. There is no need to reduce the processing load on the CPU. Moreover, although the correct character with respect to the character which is garbled is not displayed, the difficulty of seeing is eliminated by displaying the character which is not garbled.

  Next, the garbled character elimination process when the music name displayed on the screen is garbled will be described with reference to FIGS.

  FIG. 3 is a flowchart of processing for eliminating garbled characters in response to indication of garbled characters, and FIG. 4 is a diagram illustrating an example of garbled character elimination. FIG. 4 shows an example of the music information display screen 42 displayed on the screen 41 of the display unit 5. On the music information display screen 42, title 43, album 44, and artist 45 are displayed as music information items. It is assumed that the garbled correction table 10 that is necessary for notating garbled characters is created in advance and stored in the storage unit.

  First, in step S11 of FIG. 3, the control unit 2 of the in-vehicle audio device 100 determines whether or not there is an indication that the characters displayed on the display screen are not correctly displayed and are “garbled”. judge. The indication that there is “garbled characters” is determined by whether or not the “character correction” button 46 of the operation unit 8 is selected. When the “character correction” button 46 is selected in a state where characters are displayed on the display screen, it is determined that the characters currently displayed are not displayed correctly.

  Further, the indication that there is “garbage” is that when the speech recognition unit 6 analyzes the user's utterance via the microphone 7 and recognizes that a predetermined word (for example, “garbage”) is uttered, You may make it judge that the character currently displayed is not displayed correctly.

  Wait until there is an indication of “garbled characters”, and when there is an indication, the process proceeds to step S12.

  In the next step S12, it is determined whether or not an item indicating which item is garbled in the indication of garbled character has been specified. For example, after selecting the “Character Correction” button 46 on the display screen of FIG. 4A, a selection key of item names (title 43, album 44, artist 45) is displayed, and an item can be selected by selecting one of them. May be specified.

  Also, when garbled characters are pointed out by voice, not only “garbled characters” but also “item names” + “garbled characters” are recognized so that items can be pointed out instead of all items. The specified item may be corrected.

  If no item name is selected, the process proceeds to step S13. If an item name is selected, the process proceeds to step S14.

  In the next step S13, the items to be converted among the characters displayed on the screen are all items, and in step S14, the display of the item specified in step S12 is the conversion target.

  In the next step S15, the display character of the garbled portion is converted into a character that is not garbled. The control unit 2 refers to the garbled correction table 10 and extracts a character code corresponding to each item. This character code is a code of the code system adopted by the apparatus, and does not cause garbled characters when displayed. When all items are to be converted, the character code for all items is extracted. When the item is specified, the character code for the specified item is extracted.

  In the next step S16, display is performed again according to the character code extracted in step S15. FIG. 4B is an example in which character notation is converted for all items. In FIG. 4 (b), characters that are not garbled are displayed by indicating the item name for each item. That is, in FIG. 4A, the title 43, album 44, and artist 45 displayed on the screen 42 are garbled as shown in 43a, 44a, 45a, whereas in FIG. 4B, As shown in 43b, 44b, and 45b, “TiTle”, “Album”, and “Artist” are displayed in characters that are not garbled.

  As described above with reference to FIGS. 3 and 4, in the in-vehicle audio apparatus 100, when “garbage” is pointed out by the user while the music information is displayed on the screen, the display is performed at that time. The displayed item is converted into a predetermined garbled character and displayed. As a result, it is possible to provide a user-friendly screen.

  As described above, the control unit 2 of the apparatus 100 only needs to grasp what is displayed on the screen when “garbage” is pointed out, and whether or not the displayed character is garbled. There is no need to make this determination. For this reason, the processing burden on the CPU is light, and it is possible to avoid the occurrence of inconveniences such as delaying other reproduction processing, map display processing, route guidance processing, and the like.

  In addition, although the display without a garbled character can be performed by the above process, a trigger for converting a garbled character into a character without a garbled character depends on a user's indication. Therefore, even if correct characters are displayed, if the user receives an indication of garbled characters, the correct characters are converted into item names. In that case, a correction cancel key may be prepared, and the key may be selected to return to the original correctly displayed state.

  In the above description, the converted character is a predetermined item name. However, the present invention is not limited to this, and a file path name stored in the music information storage unit 9 may be displayed. In this case, when the garbled character is pointed out, what is the item content displayed on the screen is detected, and the file path name corresponding to the item content is extracted from the music information storage unit 9 and displayed.

  Further, after garbled characters are pointed out, an item input screen for inputting correct characters may be displayed, and character codes that can be handled by this apparatus, for example, music information data by Unicode may be input. With this information, the music data stored in the music information storage unit 9 is rewritten, and information that is not garbled is displayed in the music information displayed next time.

(2) Second Embodiment The second embodiment is directed to a case where a music menu is displayed as another example in which garbled characters may occur. Since the configuration of the in-vehicle audio apparatus 100 is the same as that of the first embodiment, the description thereof is omitted.

  The garbled character elimination processing when “garbage garbled” is pointed out by the user when the music menu is displayed will be described with reference to FIGS. 5 and 6.

  FIG. 5 is a flowchart showing an example of garbled character elimination processing, and FIG. 6 shows an example of garbled character elimination on the menu screen. It is assumed that the garbled correction table 10 that is necessary for notating garbled characters is created in advance and stored in the storage unit.

  FIG. 6A shows an example of the music search screen 61. The music search screen 61 is created based on music data received from an external device, and four items of an artist 63a, a title 63b, an album 63c, and a genre 63d can be selected. FIG. 6B is an artist search screen 62 when an artist 63a is selected from the music search screen 61 of FIG. 6A, and artist names (64a to 64d) are displayed in a list format. When the number of displays is large, it is possible to display other artist names by operating the scroll bar 66.

  Since the artist name displayed on the artist search screen 62 in FIG. 6B is displayed based on the data stored in the music storage unit (15, 18) of the external device, the character code employed by the external device is displayed. When the character codes employed in the in-vehicle audio device 100 are different from each other, it may occur that correct character display is not performed. For example, in FIG. 6B, the artist name 64c is displayed as garbled characters.

  Deletion processing for garbled characters when correct characters are not displayed will be described below.

  First, initial setting is performed in step S21 of FIG. In this initial setting, an identification number N for identifying a plurality of garbled menu items is prepared, and N = 1.

  In the next step S <b> 22, the control unit 2 of the in-vehicle audio apparatus 100 determines whether or not there is an indication that the characters displayed on the display screen are not correctly displayed and are “garbled”. The indication that there is “garbled characters” is determined by whether or not the “character correction” button 65 of the operation unit 8 is selected. When the “character correction” button 65 is selected in a state where characters are displayed on the display screen, it is recognized that the characters displayed at that time are not displayed correctly.

  Wait until there is an indication of “garbled characters”, and if there is an indication, the process proceeds to step S23.

  In the next step S23, the specified menu item to be converted is acquired. For example, as shown in FIG. 6B, a menu item to be character-converted may be specified by selecting a menu item after selecting the “character correction” button 65. In FIG. 6B, the menu item 64c is selected to designate a menu item to be converted. The designated menu item becomes a character conversion target and is stored in the storage unit.

  In the next step S24 to step S27, the display character of the garbled portion is converted into a character that is not garbled. In step S24, the control unit 2 refers to the garbled correction table 10 stored in the storage unit, and extracts a character code corresponding to the displayed menu. This character code is a code of the code system adopted by the apparatus, and does not cause garbled characters when displayed. For example, in FIG. 6B, an artist search screen is displayed. When an indication of “garbage” is detected in this state, a correction character code corresponding to the artist name (“Artist in the display state”) is displayed from the character correction table 10. )).

  In the next step S25, an identification number N is added to the extracted display data to form a new menu item. In the next step S26, 1 is added to the identification number N.

  In the next step S27, it is determined whether or not the conversion has been completed for all the character conversion target menu items. If the conversion has been completed, the process proceeds to step S28. If the conversion has not been completed, the process proceeds to step S25. Return character conversion processing continues.

  In the next step S28, the corrected menu item converted in steps S24 to S27 is displayed. For example, on the screen of FIG. 6B including a garbled menu item, the menu item 64c is converted to “Artist1” that is not garbled and displayed as shown in FIG. 6C.

  As described above with reference to FIG. 5 and FIG. 6, in the in-vehicle audio device 100, it is pointed out that “garbled characters” are pointed out by the user in a state where menu items related to music are displayed on the screen. Convert the displayed menu item to a garbled character and display it. This makes it possible to provide a menu screen that is easy for the user to see. In this way, the control unit 2 of this apparatus only needs to grasp the item for which “garbled characters” are pointed out, and does not need to determine whether or not the characters displayed on the screen are garbled. . Therefore, the processing load on the CPU is light, and it is possible to avoid the occurrence of inconvenience that delays other reproduction processing, map display processing, route guidance processing, and the like.

  Note that the trigger to convert a garbled character into a garbled character depends on the user's indication. Therefore, even if correct characters are displayed, if the user receives an indication of garbled characters, the correct characters are converted into item names. In that case, a correction cancel key may be prepared, and the key may be selected to return to the original correctly displayed state.

  In the above description, the search target is an artist. However, the same applies when the search target is a title or an album.

  Further, when the garbled characters are eliminated by the above process, the new item contents may be written in the music information storage unit 9 to update the music information. In this case, the corrected item is also displayed in the music information display displayed when the music is selected.

It is a block diagram which shows the structure of the vehicle-mounted audio apparatus which concerns on one Embodiment of this invention. It is a figure which shows an example of music information and a garbled correction table. It is a flowchart which shows an example of a garbled character elimination process. It is an example of the transition of the music information display screen which eliminates garbled characters. It is a flowchart which shows an example of the garbled character elimination process with respect to a menu screen. It is an example of the transition of the menu screen which eliminates garbled characters.

Explanation of symbols

100: In-vehicle audio device,
200 ... portable audio equipment (iPod),
300 ... External storage device (USB memory),
1 ... communication part,
2 ... control unit (control means),
5. Display unit (display means),
6 ... voice recognition unit (voice recognition means),
8 ... operation part (input means),
9: Music information storage unit (storage means),
10 ... garbled correction table,
42 ... Music information display screen,
46, 65 ... character correction buttons,
61 ... Music search screen,
62 ... Artist search screen.

Claims (5)

An in-vehicle audio device that is communicably connected to an external device storing music data for playback,
Display means for displaying music information attached to the music data on a screen;
An input means for inputting user instructions;
Storage means for storing a garbled correction table in which a predetermined character string corresponding to a character code set handled in the in-vehicle audio device for garbled characters is registered;
Control means for acquiring the music data and music information from the external device;
When the control means determines that the character displayed on the screen is garbled according to a user instruction received via the input means, the garbled character correction table is referred to and the garbled character correction table is referred to. An instruction to cancel the conversion to the predetermined character string via the input means, and display the character string on the screen in place of the garbled character. When there is, a vehicle-mounted audio device that displays a character string before conversion on the screen .   The input means is a predetermined button for instructing that the character is garbled, or a microphone and voice recognition means for recognizing that the user's utterance is a word for instructing that the character is garbled. The content of the item displayed on the screen when the button is selected or the predetermined word is recognized while the music information of the predetermined item is displayed on the screen. The in-vehicle audio apparatus according to claim 1, wherein the character is garbled and the item content is converted into a predetermined character string that is not garbled. The song information includes song name, artist name, album name, and genre items,
The in-vehicle audio apparatus according to claim 1, wherein the predetermined character string is an item name of the music information.   4. The control means, when a plurality of the garbled characters exist in each item of the music information, converts each garbled character into an identifiable name including the item name. The vehicle-mounted audio apparatus described in 1.   The control means acquires the music information from the external device, stores the music information in the storage means, and determines that a garbled character is displayed on the screen, corrects the garbled character and The in-vehicle audio apparatus according to claim 2 or 4, wherein the in-car audio device is displayed on a screen and converts the garbled character stored in the storage means into a corrected character.

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