JP5028045B2 - In-vehicle display device - Google Patents

Description

  The present invention relates to an in-vehicle display device having a voice recognition function.

Detecting the state of the vehicle, outputting a sound according to the detected state of the vehicle, limiting the recognition word for recognizing the sound, comparing the input sound and the limited recognition word, A vehicle voice recognition device that recognizes an input voice by seeing a match between both data is known (Patent Document 1).
Japanese Patent Laid-Open No. 10-73448

  In the vehicle speech recognition device described in Patent Document 1, the recognition words are limited according to the detected state of the vehicle, so that operations other than the operation relating to the detected state of the vehicle cannot be performed by voice. There is a point.

(1) The in-vehicle display device according to the first aspect of the present invention includes a voice input means for inputting a voice uttered by a user, a voice recognition means for recognizing a voice input by the voice input means against a dictionary, an icon A display control unit that displays a button or a button on a display monitor, and a dictionary that limits a range of a dictionary for collating sounds based on the specified button or icon when an icon or button displayed by the display control unit is specified Range control means , the voice input means inputs voice when the utterance switch is pressed, the display control means displays an icon or button on the display monitor when the utterance switch is pressed, and further, the voice switch Each time is pressed, the icon or button displayed on the display monitor is switched to another icon or button .
(2) The in-vehicle display device of the invention of claim 2 includes a voice input means for inputting a voice uttered by a user, a voice recognition means for recognizing a voice inputted by the voice input means against a dictionary, an icon, Display control means for displaying a button on a display monitor, and a dictionary range for limiting a range of dictionaries to be collated based on the specified button or icon when an icon or button displayed by the display control means is specified The control means, the input means for inputting the destination displayed on the display monitor, the mark display means for displaying a mark corresponding to the destination input by the input means, and the mark on the display monitor are designated and input. Related voice storage means for storing the voice in association with the destination corresponding to the mark, and the sound stored in relation to the destination by the related voice storage means When the mark is designated, the dictionary range control means displays the range of the dictionary for collating the voice when the mark is designated. It is characterized by being limited to words about .
(3) The in-vehicle display device of the invention of claim 3 includes a voice input means for inputting a voice uttered by a user, a voice recognition means for recognizing a voice inputted by the voice input means against a dictionary, an icon, Display control means for displaying a button on a display monitor, and a dictionary range for limiting a range of dictionaries to be collated based on the specified button or icon when an icon or button displayed by the display control means is specified The control means, the input means for inputting the waypoint displayed on the display monitor, the mark display means for displaying the mark corresponding to the waypoint input by the input means, and the mark on the display monitor are designated and inputted. Related voice storage means for storing the voice in association with the waypoint corresponding to the mark, and the sound stored in association with the waypoint by the related voice storage means When a mark is designated, the dictionary range control means displays the range of the dictionary for collating the voice when a mark is designated. It is characterized by being limited to words about .

  According to the present invention, by designating icons and buttons displayed on the display monitor, it is possible to limit the range of the dictionary for collating speech to the range defined for the designated icons and buttons. Therefore, by designating an icon or a button related to a desired operation, the desired operation can be surely executed by voice regardless of the detected vehicle state.

  A configuration of a navigation apparatus according to an embodiment of the present invention is shown in FIG. The navigation apparatus 1 of FIG. 1 inputs the voice which a user utters with the microphone 19, and performs various functions based on the input voice. The navigation device 1 includes a control circuit 11, a ROM 12, a RAM 13, a current location detection device 14, an image memory 15, a display monitor 16, a speaker 17, an input device 18, a microphone 19, a voice recognition unit 110, a touch panel 112, and a disk drive 114. ing.

  An audio device such as a CD player 2 is connected to the navigation device 1, and the CD player 2 can be operated by operating the input device 18, the touch panel 112, or voice input to the microphone 19. The sound reproduced by the CD player 2 is output from the speaker 17.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area. When the control circuit 11 performs a predetermined route search process based on the map data stored in the DVD-ROM 115, the processing result is displayed on the display monitor 16 as a search route.

  The current position detection device 14 is a device that detects the current position of the vehicle. For example, a vibration gyro 14a that detects the traveling direction of the vehicle, a vehicle speed sensor 14b that detects the vehicle speed, and a GPS signal from a GPS (Global Positioning System) satellite. It consists of a GPS sensor 14c and the like. The navigation device 1 determines a map display range, a route search start point, and the like based on the current location of the vehicle detected by the current location detection device 14, and displays the current location on the map.

  The image memory 15 stores image data to be displayed on the display monitor 16. This image data includes map drawing data and various graphic data, which are appropriately generated based on the map data stored in the DVD-ROM 115. The navigation device 1 can perform map display and the like by using the image data generated in this way.

  The display monitor 16 provides the user with various information such as a map near the vehicle position as a screen display based on various information such as map data. The speaker 17 guides the user's various input operations and outputs sound for guiding the route to the user. The input device 18 has an input switch for the user to set various commands, and is realized by a remote controller or the like. The user manually operates the input device 18 according to the instruction on the display screen of the display monitor 16 to select the destination and set the destination.

  When the destination is set by the user, the navigation apparatus 1 performs a route calculation from the current location detected by the GPS sensor 14c to the destination based on a predetermined algorithm. Hereinafter, this route calculation is referred to as route search. The route thus obtained (hereinafter referred to as a recommended route) is displayed on the screen in a manner different from other roads by changing the display format, for example, the display color. Thereby, the user can recognize the recommended route on the map on the screen. In addition, the navigation device 1 instructs the user in the direction of travel using a screen or voice so that the vehicle can travel according to the recommended route, thereby guiding the route of the vehicle.

  The microphone 19 inputs a voice uttered by the user. The microphone 19 is provided with a PTT (Press to Talk) switch 19a. When a sound is emitted in a state where the PTT switch 19a is pressed, the sound is input to the microphone 19. The voice recognition unit 110 recognizes the input voice by comparing the voice pattern of the voice input from the microphone 19 with the voice pattern stored in the dictionary 111. The recognition result is output to the control circuit 11.

  The dictionary 111 is divided into a plurality of small dictionaries as shown in FIG. Each sub-dictionary stores voice patterns of words included in a predetermined category. The dictionary used for speech recognition can be limited in units of small dictionaries. For example, the small dictionary used when setting the destination is limited to the small dictionary group within the range of the dotted line 21, or the small dictionary used when setting the waypoint is limited to the small dictionary group within the range of the alternate long and short dash line 22. can do.

  The touch panel 112 is a transparent panel provided on the monitor screen of the display monitor 16, and the display screen displayed on the display monitor 16 is displayed through the touch panel 112. Further, when the display screen of the display monitor 16 is pressed, the touch panel 112 is pressed. The touch panel 112 has an input function like the input device 18. When a map screen, various buttons, display menus, or the like displayed on the display monitor 16 are pressed and specified with a finger, the touch panel 112 is pressed, and the pressed position is calculated by the touch panel control unit 113. Then, the calculated pressing position is input to the control circuit 11, and a destination is set, or functions corresponding to various buttons and display menus are executed.

  The disk drive 114 is loaded with a DVD-ROM 115 in which map data to be displayed on the display monitor 16 is recorded. The map data includes map display data, route search data, and the like, and the display and route search data include road link information and node information. The map display data has map data of a plurality of scales from wide areas to details, and the scale of the display map can be changed according to a user request. The disk drive 114 reads map data for displaying a map on the display monitor 16 from the loaded DVD-ROM 115. The map data may be read from a recording medium other than the DVD-ROM 115, such as a CD-ROM or a hard disk.

  With reference to FIG. 3, operation of the navigation apparatus 1 by voice recognition in the embodiment of the present invention will be described. Here, it is assumed that the user has searched for a route to a predetermined destination and received route guidance, but wished to change the destination by voice and pressed the PTT switch 19a provided on the microphone 19. .

  FIG. 3 is a diagram showing a display screen of the display monitor 16 displaying the recommended route searched on the map around the vehicle position. A vehicle position mark 31 is displayed at the vehicle position on the map 30. A destination button 32 and a waypoint button 33 are displayed on the upper right of the display screen. Normally, the destination button 32 and the waypoint button 33 are not displayed on the display monitor 16, but are displayed when the PTT switch 19a is pressed.

  While the destination button 32 is being pressed, the speech pattern of words related to the destination, such as words uttered when the destination is set or changed when the range of the dictionary to be collated when the voice recognition unit 110 recognizes the voice Is limited to the dictionary range 21 (see FIG. 2).

  On the other hand, while the waypoint button 33 is being pressed, the range of the dictionary that is collated when the voice recognition unit 110 recognizes the voice is a word about the waypoint, such as words that are issued when setting or deleting a waypoint. Is limited to the dictionary range 22 (see FIG. 2) in which the voice patterns are stored.

  As shown in FIG. 3, when a music piece is played by the CD player 2, an audio information display screen 34 displaying information related to playback of the CD player is displayed on the display monitor 16. While the audio display screen 34 is being pressed, the range of the dictionary that is collated when the speech recognition unit 110 recognizes the speech is limited to the range of the dictionary that stores the speech pattern of words related to the audio operation.

  When performing an operation to change the destination, a voice “change destination” is issued to the microphone 19 while pressing the destination button 33 as shown in FIG. At this time, since the dictionary for voice recognition is limited to the range of the dictionary in which the voice pattern of the word related to the destination is stored, it is less likely that the word is mistakenly recognized as another word. Can be reliably identified. Then, the destination to be changed by inputting the destination name to the microphone 19 is input. Next, when “search” and the microphone 19 are uttered, a recommended route to a new destination is calculated and a new recommended route 35 is displayed.

  Next, dictionary range limiting processing of a dictionary used for voice recognition of the navigation device 1 of the present embodiment will be described with reference to the flowchart of FIG. The processing of FIG. 4 is executed in the control circuit 11 by a program that starts when a map is displayed on the display monitor 16.

  In step S401, it is determined whether the PTT switch 19a provided in the microphone 19 has been pressed. If the button is pressed, an affirmative decision is made in step S401 and the process proceeds to step S402. If not, step S401 is repeated. In step S402, a plurality of dictionary range limiting buttons (the destination button 32, the waypoint button 33, etc.) are displayed on the display screen of the display monitor 16.

  In step S403, based on the pressed position of the touch panel 112 calculated by the touch panel control unit 113, it is determined whether any of the dictionary range limitation buttons 32 and 33 is pressed. If it is pressed, an affirmative determination is made in step S403 and the process proceeds to step S404. If not pressed, a negative determination is made in step S403, and the process returns to step S401.

  In step S404, the range of the dictionary to be collated when performing speech recognition is limited to the range of the small dictionary defined in the pressed dictionary range limiting button 32 or 33. For example, the destination button 32 is limited to the small dictionary range 21 defined in the destination button 32 as shown in FIG. In step S405, it is determined whether the dictionary range limitation button 32 or 33 determined to be pressed in step S403 is pressed. If it is pressed, an affirmative determination is made in step S405, and the process returns to step S404. If not pressed, a negative determination is made in step S405, and the process returns to step S401.

The navigation device 1 according to the above embodiment has the following operational effects.
(1) By pressing the dictionary range limitation button 32 or 33 displayed on the display monitor 16, the range of the dictionary 111 to be collated is changed to the dictionary range 21 or 22 defined in the dictionary range limitation button 32 or 33. It can be limited to. Therefore, by pressing the dictionary range limiting button 32 or 33 related to the desired operation, the desired operation can be reliably performed by voice regardless of the detected vehicle state.

(2) The dictionary range limitation buttons 32 and 33 are displayed when a speech switch such as the PTT switch 19a is pressed. Therefore, when the navigation apparatus 1 is not operated by voice, the dictionary range limitation buttons 32 and 33 are not displayed, and the map display is not disturbed.

(3) When the audio information display screen 34 is pressed, the range of the dictionary to be collated when the speech recognition unit 110 recognizes the speech is limited to the range of words related to the audio operation. Therefore, it is possible to prevent an operation unrelated to the audio from being erroneously performed, and it is possible to reliably perform the operation related to the audio by the voice.

The navigation apparatus 1 of the above embodiment can be modified as follows.
(1) Although the dictionary range limitation buttons 32 and 33 are displayed when the utterance switch such as the PTT switch 19a is pressed, the dictionary range limitation buttons 32 and 33 may always be displayed on the display screen. In this case, if the dictionary range limitation button is pressed without pressing the speech switch, voice input to the microphone 19 becomes possible. With one operation, voice input is possible and the range of the dictionary can be limited, improving convenience.

(2) The dictionary range limitation button is not limited to the destination button 32 and the waypoint button 33, and can be provided as appropriate. For example, a button for changing the scale of the map 30 by voice recognition, a button for scrolling the map 30, a button for changing the direction of the map 30 to the north side or the direction in which the vehicle travels upward, etc. You may provide as. By doing so, operations such as changing the scale ratio of the map 30 or scrolling the map 30 can be reliably executed by limiting the dictionary used for voice recognition.

(3) Each time the utterance switch is pressed, the dictionary range limitation button displayed on the display screen may be switched to another dictionary range limitation button. The number of dictionary range limiting buttons displayed at a time can be reduced, and the map 30 displayed on the display monitor 16 is easy to see. For example, as shown in FIG. 5, the dictionary range limitation button 51 displayed on the display monitor 16 can be made one. When only one dictionary range limiting button 51 is displayed, the dictionary range used for speech recognition may be limited based on the displayed dictionary range limiting button 51.

(4) The destination and waypoint may be registered by voice recognition as follows, and the destination and waypoint may be displayed on the display monitor 16 by voice recognition. The map 30 is scrolled to display the destination and waypoint on the display screen as shown in FIG. When the displayed destination mark 61 is pressed and designated, the microphone 19 can be used for voice input, and the dictionary used for voice recognition is limited to a range of words related to the destination. Similarly, when the displayed waypoint is pressed, voice input from the microphone 19 is enabled, and the dictionary used for voice recognition is limited to a range of words related to the waypoint. When the destination mark 61 is designated and the “destination display” is issued to the microphone 19, the pressing point on the map corresponding to the pressing position is associated with the word “destination display” in the RAM 13. Is remembered. Similarly, if the route point is displayed while pressing the route point to the microphone 19, the pressing point on the map corresponding to the pressed position is associated with the word “route point display” in the RAM 13. Remembered.

  Thereafter, when a map of the destination or waypoint is displayed on the display monitor 16 during route guidance or the like, while pressing the destination button 32 or the waypoint button 33 and specifying the destination, To the microphone 19. As a result, the map 30 is displayed so that the pressing point associated with the words “destination display” and “route point display” is displayed in the center of the display screen, and the destination and waypoints are displayed on the display monitor 16. Is done.

  Normally, in order to display a map of a destination or waypoint on the display monitor 16 during route guidance, etc., an operation of scrolling the map 30 must be performed. A map of the waypoint can be displayed, and convenience is improved.

  In addition, instead of displaying by voice recognition, if “destination display” is issued to the microphone 19 while “destination display” is issued to the microphone 19 while the destination 61 is pressed, the pressing position is set. An icon associated with the corresponding pressed point on the map may be displayed on the display monitor 16, and a map of the destination or waypoint may be displayed on the display monitor 16 when the icon is pressed.

(5) The dictionary range limiting button is not limited to the button such as the destination button 32 and the waypoint button 33, but may be an icon or the like.

(6) Any speech operation switch that allows voice input to the microphone 19 is not limited to a PTT switch. Moreover, it is not limited to the case where it is provided in the microphone, and as shown in FIG. 7, the speech switch 71 may be provided on the steering 72 of the vehicle.

(7) The audio information displayed on the audio information display screen 34 is not limited to information related to playback of the CD player 2. For example, radio broadcast information may be used. Alternatively, the present invention can also be applied when controlling various on-vehicle equipment such as air conditioners.

(8) If it is a vehicle-mounted display device, it is not limited to a navigation device.

(9) When the icons or buttons displayed on the display monitor are designated by various input devices, the range of the dictionary for collating the voice at the time of voice recognition may be limited based on the designated buttons or icons. . That is, the present invention is not limited to the embodiment described above.

The correspondence between the elements of the claims and the embodiments will be described.
The voice input means of the present invention corresponds to the microphone 19, and the voice recognition means corresponds to the voice recognition unit 110. Display control means, dictionary range control means, and search means correspond to the control circuit 11, and input means correspond to the control circuit 11, the touch panel 112, and the touch panel control unit 113. The mark display means corresponds to the control circuit 11 and the display monitor 16, and the related voice storage means corresponds to the control circuit 11 and the RAM 13. The destination display means and the waypoint display means correspond to the control circuit 11. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

It is a block diagram which shows the structure of the navigation apparatus of embodiment of this invention. It is a figure for demonstrating the dictionary collated at the time of voice recognition. It is a figure for demonstrating the display screen displayed when a PTT switch is pressed down. It is a flowchart for demonstrating the dictionary range limitation process of the dictionary used for speech recognition. It is a figure for demonstrating the dictionary range limitation button in which the dictionary range limitation button displayed on a display screen switches to another dictionary range limitation button whenever a speech switch is pressed. It is a figure for demonstrating operation for displaying the destination on a display screen by voice recognition. It is a figure for demonstrating the speech switch provided in the steering of the vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 CD player 11 Control circuit 13 RAM
16 Display monitor 17 Speaker 18 Input device 19 Microphone 19a PTT switch 32, 33, 51 Dictionary range limitation button 71 Speak switch 72 Steering 110 Voice recognition unit 111 Dictionary 112 Touch panel

Claims (7)

A voice input means for inputting voice uttered by the user;
A voice recognition means for recognizing the voice inputted by the voice input means by collating with a dictionary;
Display control means for displaying icons and buttons on a display monitor;
When an icon or button displayed by the display control means is specified, a dictionary range control means for limiting a range of the dictionary for collating speech based on the specified button or icon ,
The voice input means inputs a voice when the speech switch is pressed,
The display control means displays the icon or the button on the display monitor when the speech switch is pressed, and further displays the icon or the button displayed on the display monitor each time the speech switch is pressed. A vehicle-mounted display device characterized by switching to another icon or button . A voice input means for inputting voice uttered by the user;
A voice recognition means for recognizing the voice inputted by the voice input means by collating with a dictionary;
Display control means for displaying icons and buttons on a display monitor;
When an icon or button displayed by the display control means is specified, a dictionary range control means for limiting the range of the dictionary for collating sounds based on the specified button or icon;
Input means for inputting a destination displayed on the display monitor ;
Mark display means for displaying a mark corresponding to the destination inputted by the input means ;
Related voice storage means for storing the voice inputted by designating the mark on the display monitor in association with the destination corresponding to the mark;
A destination display means for displaying a destination related to the voice on the display monitor when the voice stored in association with the destination is input by the related voice storage means;
The dictionary range control means, when the mark is designated, limits the range of the dictionary for collating speech to words related to a destination. A voice input means for inputting voice uttered by the user;
A voice recognition means for recognizing the voice inputted by the voice input means by collating with a dictionary;
Display control means for displaying icons and buttons on a display monitor;
When an icon or button displayed by the display control means is specified, a dictionary range control means for limiting the range of the dictionary for collating sounds based on the specified button or icon;
Input means for inputting a waypoint displayed on the display monitor ;
Mark display means for displaying a mark corresponding to the waypoint input by the input means ;
Related voice storage means for storing the voice inputted by designating the mark on the display monitor in association with the waypoint corresponding to the mark;
When the voice stored in association with the waypoint is input by the related voice storage means, the route point display means for displaying the waypoint related to the voice on the display monitor,
The dictionary range control means, when the mark is designated, limits the range of the dictionary for collating speech to words related to waypoints. In the in-vehicle display device according to claim 2 or 3,
The voice input means inputs a voice when the speech switch is pressed,
The display control unit displays the icon or button on the display monitor when the utterance switch is pressed . 5. The in-vehicle display device according to claim 4, wherein the display control unit switches an icon or button to be displayed on the display monitor to another icon or button each time the speech switch is pressed. Display device. In the vehicle-mounted display device according to any one of claims 1 to 5 ,
The display control means displays audio icons and buttons on a display monitor,
The dictionary range control means limits the range of the dictionary to words related to audio when an icon or button related to the audio is designated. In the vehicle-mounted display device according to any one of claims 1 to 5 ,
The display control means displays icons and buttons related to various on-vehicle equipment such as air conditioners on a display monitor,
The dictionary range control means limits the range of the dictionary to words related to various on-vehicle device devices such as air conditioning when an icon or button related to the various vehicle device devices such as air conditioning is specified. apparatus.

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