WO2004070703A1 - 車載制御装置 - Google Patents
車載制御装置 Download PDFInfo
- Publication number
- WO2004070703A1 WO2004070703A1 PCT/JP2003/015993 JP0315993W WO2004070703A1 WO 2004070703 A1 WO2004070703 A1 WO 2004070703A1 JP 0315993 W JP0315993 W JP 0315993W WO 2004070703 A1 WO2004070703 A1 WO 2004070703A1
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- WO
- WIPO (PCT)
- Prior art keywords
- voice
- user
- control unit
- display
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3605—Destination input or retrieval
- G01C21/3608—Destination input or retrieval using speech input, e.g. using speech recognition
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/226—Procedures used during a speech recognition process, e.g. man-machine dialogue using non-speech characteristics
- G10L2015/228—Procedures used during a speech recognition process, e.g. man-machine dialogue using non-speech characteristics of application context
Definitions
- the present invention relates to an in-vehicle control device that performs control according to a voice command.
- Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 0-9 7 7 1 9
- voice recognition may not be possible depending on the user's utterance state (for example, the volume of the voice uttered). I didn't know if the voice command was wrong, it wasn't recognized because the utterance was bad, or I didn't know if the device wasn't working because I didn't press the switch for voice recognition. There was a case where I was puzzled.
- an object of the present invention is to provide an in-vehicle control device that conveys the recognition state in a voice command that is uttered to a user in an easy-to-understand manner. Disclosure of the invention
- the in-vehicle control device includes a voice recognition unit for recognizing a user's voice command input from a voice input unit connected to the outside, and analyzes the cause of the failure when the voice recognition unit cannot recognize the voice. And a control unit for changing the display format of the screen of the externally connected display means based on the result of the analysis.
- the in-vehicle control device will also complete the parameter learning for user's voice recognition, so input voice to make the in-vehicle control device learn the voice.
- the voice recognition rate can be improved without performing a separate task, and the user's work can be reduced.
- FIG. 1 is a functional block diagram showing an in-vehicle control device according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing a driver's seat of a vehicle equipped with the on-vehicle control device according to the embodiment of the present invention.
- FIG. 3 is a flowchart showing the overall processing of the in-vehicle control device according to the embodiment of the present invention.
- FIGS. 4A and 4B are diagrams showing the display contents of the display device in the in-vehicle control device according to the embodiment of the present invention.
- FIG. 4A is a diagram showing the display contents on which the voice reception status icon is displayed 4
- Fig. B is a diagram showing the display contents that provide the operating state to the user.
- FIG. 5 shows a display device in the in-vehicle control device according to the embodiment of the present invention. It is a figure which shows a display content, and is a figure which shows the change of the display form of a screen.
- FIGS. 6A and 6B are diagrams showing the display contents of the display device in the in-vehicle control device according to the embodiment of the present invention, and FIG. 6A shows the display contents for providing the user with a menu capable of operating guidance FIG. 6B is a diagram showing display contents for providing the selected operation contents to the user.
- FIG. 7 is a diagram showing the correspondence between the analysis results stored in the memory and the display format in the in-vehicle control device according to the embodiment of the present invention.
- FIG. 8 is a diagram showing the correspondence between the contents of the voice command stored in the memory and the example sentence in the in-vehicle control device according to the embodiment of the present invention.
- FIG. 1 shows an in-vehicle control device according to the first embodiment, and here, a force navigation device is shown as an example.
- the main unit 1 is composed of a control unit 2 composed of a microprocessor and the like, a memory 3 connected to the control unit 2 for storing programs and various data, and also connected to the control unit 2 for digital map data. It has a map information storage device 4 that stores data and a voice recognition unit 5 that recognizes a voice signal input from the microphone 8.
- the control unit 2 has a function of controlling the display device 6 connected to the main device 1 and displaying the route information and road information necessary for navigation on the display device 6.
- a liquid crystal display device is generally used, but any type of display device can be used, and the display device 6 may be integrated with the main body device 1, or may be formed on a part of the interior surface of the car. May be embedded together with the car
- the control unit 2 calculates the position of its own device from a plurality of satellite signals received by a GP S (Global Positioning System) antenna 7 in order to perform navigation by a known calculation method.
- the microphone 8 converts the user's voice into an electrical signal and outputs it to the voice recognition unit 5, and the speaker 9 outputs sound, sound effects, music, etc. based on the control of the control unit 2. To do.
- the interface 10 is an air conditioner control device (not shown), a headlight, a wiper, a sensor that detects the on / off state of the headlight, etc. It has a function to relay signals to and from the control unit 2.
- the input device 11 is a device that detects a command from the user and outputs a signal corresponding to the command to the control unit 2.
- the input device 11 includes, for example, one or a plurality of buttons, an evening bullet, an evening sensor provided on the display device 6, a joystick, a lever provided on the vehicle body, and the like.
- a variety of input devices can be used that can convert these commands into signals.
- the utterance switch 1 2 is a device that outputs a signal indicating that the utterance switch has been pressed to the control unit 2 when pressed by the user.
- FIG. 2 is a perspective view of a driver's seat of a car to which the in-vehicle control device in the present embodiment is applied.
- the microphone 8 is located at a position where the driver's voice can be easily input, for example, in the dashboard in front of the driver's seat, and the utterance switch 1 2 does not interfere with driving the car while the user is driving the car.
- a position that is easy to push for example, a handle is provided.
- This in-vehicle controller has two operation modes: command execution mode and operation guidance mode.
- the instruction execution mode is a mode in which normal operation is performed.
- the voice recognition unit 5 recognizes the user's voice command, and the control unit 2 executes processing corresponding to the voice command.
- this command execution mode for example, destination setting and navigation start in navigation, control of air conditioners such as air volume adjustment, audio control, e-mail and Internet ITS (Intelligent Transport Syst erns), it is possible to control various in-vehicle electronic devices such as electronic devices, and to control electronic devices outside the vehicle via the Internet.
- the operation guidance mode is a mode that explains how to perform voice input to the user, and the user recognizes the operation procedure and voice command of the in-vehicle control device without looking at the instruction manual. Can do. Note that switching between the command execution mode and the operation guidance mode can be performed by, for example, pressing a selection button, selecting a menu displayed on the display device 6, or the like.
- FIG. 3 is a flowchart of the control unit 2 showing the instruction execution mode and the operation guidance mode.
- control unit 2 detects an input signal from the input device 1 1 or the speech switch 1 2 and determines whether the input signal is a signal for instructing execution of the operation guidance mode or the instruction execution mode. Whether the signal is an instruction to execute the process (step ST 3).
- the control unit 2 executes processing in the instruction execution mode in steps ST 5 to ST 8.
- the operation guidance mode is executed.
- control unit 2 waits for an input signal from the input device 11 and / or a voice command from the microphone 8 (step ST 4). At the same time, the control unit 2 displays a voice on the screen as shown in FIG. “V 0 ICE” voice acceptance status icon 13 indicating that the command is accepted.
- the voice recognition unit 5 When voice is input to the microphone 8 by the user, the voice recognition unit 5 recognizes the input voice. At this time, the voice recognition unit 5 reads out the recognition parameters for the user specified in step ST2 from the memory 3, and recognizes the voice using the parameters (step ST5). For example, if the user wants to search for a nearby gasoline stand, the voice command ⁇ Near Gas Stand '' will be entered from microphone 8 and ⁇ Near Gas Stand '' will be entered. The
- control unit 2 identifies which command is input from among a plurality of commands of the voice command uttered by the user. If the control unit 2 specifies a voice command, the voice state of the voice command is determined to be good, and processing corresponding to the specified command is executed (step ST 7).
- control unit 2 determines that the voice state of the voice command is bad, and analyzes the voice state (step ST8). Details of the audio state analysis will be described later. Further, the control unit 2 switches the display on the screen of the display device 6 based on the analysis result of the voice state, and waits for the input of a voice command again (step ST 9).
- display switching means displaying icons corresponding to the audio status, or icons already displayed corresponding to the audio status. Or change the display of the icon, or blink the entire screen (in this case, change the blinking interval and the blinking method according to the voice status), display the voice status as text information In addition, it refers to using these in combination.
- the display method may be any method as long as the user can visually recognize the voice state by looking at the screen of the display device 6.
- the control unit 2 detects whether the user has performed an operation to end the processing of the in-vehicle control device based on an electric signal from the power key via the input device 11 or the interface 10. (Step ST 1 2). Here, when there is no end operation, the control unit 2 repeats the processing from step ST 3. On the other hand, if there is an end operation, the process ends.
- the user inputs “Near Gas Stand” as a voice command.
- the in-vehicle controller searches for a nearby gas stand and displays the result. As shown in Fig. 4B, during the operation, "Search for nearby gasoline stand" is displayed to indicate the operation status to the user.
- the control unit 2 displays the initial screen shown in FIG. 6A on the display device 6 (step ST 10).
- This initial screen is a screen that provides the user with a menu that allows the user to perform operation guidance in the operation guidance mode. In this case, “basic operation”, “address search”, “facility search”, “periphery search”.
- the control unit 2 detects a command input by the user to the input device 11 1, and if the command is “Facilities Search”, the operation description shown in FIG. 6B is performed. Display the screen (step ST 1 1). In the display of this operation description, the control unit 2 reads out the voice command relating to the selected command from the memory 3 and displays it on the display device 6. In this case, “Facilities search” has been selected, and as a corresponding phrase, “Please continue to state the prefecture name and facility name” is displayed.
- the example sentence of the voice command relating to the currently selected command is read from the memory 3 and displayed on the display device 6.
- “Facilities Search” is selected, so “Tokyo Metropolitan Zoo”, “Kanagawa ⁇ Station”, and “Chiba Prefecture Kuchiguchi Land” are displayed as example sentences.
- the displayed example sentence may be output from the speaker 9 as a voice so that the user can recognize it as a voice.
- the control unit 2 detects “view demo” as a command input to the input device 1 1 by the user, as shown in FIG. 6B, the operation of the input device 1 1 ( For example, it is possible to explain general operations including the pressing of the utterance switch 12 during voice input. At this time, by outputting the voice command from the speaker power 9, an environment similar to the voice command actually spoken by the user is provided to the user.
- the control unit 2 detects the pressing of the utterance switch 12
- the control unit 2 records the voice received by the microphone 8 in the memory 3 while the pressing is detected.
- the control unit 2 ends the recording in the memory 3 and instructs the voice recognition unit 5 to analyze the recorded voice.
- the voice recognition unit 5 analyzes the characteristics of the voice according to a known voice recognition algorithm and records the analysis result in the memory 3. For example, the voice recognition unit 5 compares the standard pattern of voice stored in the memory 3 with the input voice pattern, and has multiple characteristics such as volume, speech speed, speech timing, unnecessary words (hereinafter referred to as “unnecessary words”). For each feature, and output the analysis results.
- the control unit 2 determines whether the input voice is good based on the analysis result. Any parameter that indicates the ease of speech recognition can be used to determine whether the speech is good, but for example, any of volume, speech speed, speech timing, or the presence or absence of supplementary words
- the control unit 2 determines that the overall analysis result is “Bad”. On the other hand, if all analysis results are “good”, the overall analysis result is “good”.
- the control unit 2 switches the screen display based on the display form associated with the analysis result.
- the analysis result and the display form are associated as shown in FIG. 7, and this association is stored in the memory 3. For example, if the control unit 2 recognizes that the cause of “bad” from the analysis result is “volume is high”, the control unit 2 refers to the audio state correspondence table stored in the memory 3 and “volume is high”. Recognize that the color corresponding to is “blue”.
- the control unit 2 changes the color of the icon displayed on the screen, for example, the above-described voice reception status icon 13 of “V 0 ICE” as shown in FIG. Again, voice command input Wait for power.
- the icon is not limited to the “VOICE” voice reception status icon 13 and may be an icon indicating the current position. Furthermore, the entire screen may be changed to blue.
- the analysis results show that “volume is loud” and “volume is low” are analysis results from the viewpoint of “volume”, and “speech speed is fast” and “speech speed is slow” means “speech speed” “Speech timing is early” and “speech timing is slow” are analysis results from the viewpoint of “speaking evening”. Therefore, the colors corresponding to the analysis result from the same viewpoint may use the same color system.
- “volume is high” and “volume is low” are analysis results from the viewpoint of “volume”, so “volume” is set to “blue” and “volume is low”. Are both blue-colored, such as “light blue”.
- whether or not the input voice is good is determined by the following method.
- the voice recognition unit 5 compares the standard pattern of the incidental word stored in the memory 3 with the input voice, and if there is a pattern that matches the incidental word at the beginning of the voice, the analysis result is set as “bad”. Output. On the other hand, when there are no incidental words, the analysis result is “good”.
- the voice recognition unit 5 detects whether the volume of the input voice is within a predetermined range, and outputs a “bad” analysis result when the volume is not within the range. On the other hand, if it is within the range, the analysis result is “good”.
- the predetermined range is, for example, a range from less than 0 dB to 30 dB when the maximum value of the volume that can be detected by the microphone 8 is 0 dB.
- the voice recognition unit 5 measures the time length of the input voice, compares this time length with the time length of the standard pattern, and determines that it is good when the difference between the two is within a predetermined range. be able to.
- the predetermined range can be set arbitrarily.
- the time length of the input voice can be set to + 25% to 1-25% compared to the time length of the standard pattern. it can.
- the voice recognition unit 5 determines whether the utterance time of the input voice is within a predetermined range.
- the analysis result is “good”, and when it is out of the range, it is “bad”.
- the analysis result is “bad” when the input voice is spoken beyond the maximum input time of the voice command or when the voice input is detected at the end of the above-mentioned voice acquisition period. It becomes. In other cases, the analysis results are good.
- the speech recognition unit 5 detects whether there is an incidental word at the end of the sentence, as in the case of the incidental word detection in (1), and if the incidental word is detected, the analysis result is set to “bad”. If it is not detected, the analysis result is set to “good”.
- FIG. 8 is a table comparing the contents of the voice commands with the example sentences of the sentences spoken by the user to execute each voice command.
- the sentences (a) to (e) shown in this figure contain a plurality of instructions with different grammars, and the speech recognition unit 5 uses a plurality of utterances with different grammars. Voice commands can be identified based on the voice.
- the in-vehicle control device is not limited to this example, and any in-vehicle control device that operates a car or an electronic device outside the vehicle by voice may be used.
- a vehicle-mounted control device there is a control device that controls a vehicle-mounted electronic device, such as an air conditioner or an audio.
- a control device that controls electronic devices outside the vehicle for example, a control device that controls various electronic devices outside the vehicle via a transmitter connected to the interface 10 can be considered.
- Select the type of electronic equipment outside the vehicle for example, at home or business air conditioners, home security systems, home servers, other electrical appliances, fast food or gasoline stores, etc. This includes all electronic devices connected via communication lines, such as fee payment devices and gate devices installed at the entrances and exits of parking lots.
- control device of FIG. 1 shows an example in which the speech recognition unit 5 is configured by a speech recognition LSI.
- the speech recognition unit 5 is not limited to being configured by a dedicated circuit, and is stored in the memory 3.
- a voice recognition program may be used.
- the speech recognition program is executed by the control unit 2 or a separate processor used exclusively for speech recognition.
- the voice analysis unit 5 performs the voice analysis as preprocessing, and the control unit 2 uses the analysis result to display the advice. However, it can also be performed by the control unit 2.
- the recognition parameters of a plurality of users are registered. However, since only a specific user may be used, it is not necessary to divide each user. If only a specific user is used, the user registration process in step ST2 in Fig. 3 is not required.
- the memory 3 can be a volatile or / and non-volatile memory 3.
- a storage means a storage device such as a hard disk or DV-RAM may be used. Industrial applicability
- the in-vehicle control device is suitable for a force navigation device.
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Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03778912.0A EP1591979B1 (en) | 2003-02-03 | 2003-12-12 | Vehicle mounted controller |
| US10/506,890 US7617108B2 (en) | 2003-02-03 | 2003-12-12 | Vehicle mounted control apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-026107 | 2003-02-03 | ||
| JP2003026107A JP2004239963A (ja) | 2003-02-03 | 2003-02-03 | 車載制御装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004070703A1 true WO2004070703A1 (ja) | 2004-08-19 |
Family
ID=32844130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/015993 Ceased WO2004070703A1 (ja) | 2003-02-03 | 2003-12-12 | 車載制御装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7617108B2 (ja) |
| EP (1) | EP1591979B1 (ja) |
| JP (1) | JP2004239963A (ja) |
| CN (1) | CN100520912C (ja) |
| WO (1) | WO2004070703A1 (ja) |
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- 2003-12-12 US US10/506,890 patent/US7617108B2/en not_active Expired - Fee Related
- 2003-12-12 CN CNB2003801003257A patent/CN100520912C/zh not_active Expired - Fee Related
- 2003-12-12 EP EP03778912.0A patent/EP1591979B1/en not_active Expired - Lifetime
- 2003-12-12 WO PCT/JP2003/015993 patent/WO2004070703A1/ja not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| US20050125233A1 (en) | 2005-06-09 |
| EP1591979A1 (en) | 2005-11-02 |
| EP1591979B1 (en) | 2015-06-24 |
| EP1591979A4 (en) | 2011-03-16 |
| US7617108B2 (en) | 2009-11-10 |
| CN1692406A (zh) | 2005-11-02 |
| JP2004239963A (ja) | 2004-08-26 |
| CN100520912C (zh) | 2009-07-29 |
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