JP2003162295A - On-vehicle voice recognition device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle voice recognition device which inhibits dictation during a travel of an automobile as an on-vehicle voice recognition device having a dictation function by voice recognition and a control function for equipment. <P>SOLUTION: The on-vehicle voice recognition device having the dictation function by voice recognition and the control function for the equipment inputs a signal 8 indicating whether the automobile is traveling, and does not select the dictation function when the signal 8 indicates that the automobile is traveling, but selects a specified function between the dictation function and control function for the equipment 5 when the signal indicates that the automobile is not traveling. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice recognition device having a dictation function and a device control function,
In particular, it relates to a voice recognition device suitable for mounting on a vehicle.

[0002]

2. Description of the Related Art FIG. 8 shows an example of a conventional voice recognition device having a dictation function and a device control function. The voice signal input to the voice input unit 1 shown in the figure is compared with the voice pattern stored in the command control dictionary 3a or the dictation dictionary 3b in the voice recognition unit 2, and the input voice is recognized. . The command based on the voice thus recognized controls the corresponding operation of the controlled device 5 by the command controller 4, and in the case of dictation, the voice recognized by the text converter 6 is converted into a character string. It is converted and displayed on the text display unit 7.

The operation of the voice recognition device will be described with reference to FIG. When the voice recognition software is activated, first, in step S20, it is determined whether or not voice is input. When voice is input, the process proceeds to step S21. In step S21, voice recognition processing is performed by comparing the voice pattern stored in the command control dictionary 3a with the input voice pattern.

The command control dictionary 3a contains a dictation start word. Next, the process proceeds to step S22, it is determined whether or not the voice pattern recognized in step S21 is a dictation start word, and if it is a dictation start word, the process proceeds to step S24. If the voice pattern recognized in step S21 is not a dictation start word, the process proceeds to step S23. In step S23, control corresponding to the command obtained from the recognition result is performed, and step S20 and subsequent steps are repeated.

In step S24, it is determined whether or not voice is input. When voice is input, the process proceeds to step S25. In step S25, the dictation dictionary 3b
The voice recognition process is performed by comparing the voice pattern stored in the input voice pattern with the voice pattern input, and step S
Move to 26.

The dictation dictionary 3b includes a dictation end word, and in step S26,
It is determined whether or not the voice pattern recognized in step S25 is a dictation end word. If it is a dictation end word, the process proceeds to step S20 to end the dictation.

If the voice pattern recognized in step S25 is not a dictation end word, step S25
Move to 27. In step S27, the voice pattern obtained from the recognition result is converted into characters, and then in step S27.
In step 28, the text data obtained in step S27 is displayed on the text display unit 7, and then in step S24.
The following is repeated.

[0008]

When the above-described conventional voice recognition is used as an in-vehicle device while a vehicle is traveling, the voice uttered for controlling the device is mistaken as a dictation start keyword (dictation start word) due to noise. May be recognized. In the dictation state, noise resistance is lower than voice recognition for commands, it is not suitable for use in the noise while driving a car, it is difficult to recognize the dictation end word, and you cannot get out of the dictation state. There is a fear, and in that case, it becomes a dictation state and causes confusion of the user.

When used by a driver,
Dictation is to display what you say,
Since uttering a long sentence is a factor that impedes the driver's concentration, dictation while driving hinders safe driving, and it is desirable that dictation during driving is prohibited.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a vehicle-mounted voice recognition device having a dictation function by voice recognition and a device control function while a vehicle is running. An object is to provide a vehicle-mounted voice recognition device in which dictation is prohibited.

[0011]

A vehicle-mounted voice recognition device of the present invention is a vehicle-mounted voice recognition device having a dictation function by voice recognition and a device control function, and is a signal indicating whether or not a vehicle is running. Is input and a signal indicating that the vehicle is running is input, the dictation function is deselected, and only the device control function is selected.When a signal indicating that the vehicle is not running is input, the dictation function is selected. The designated function is selected from both of the device control functions.

Further, in the vehicle-mounted voice recognition device,
The means for deselecting the dictation function is by disabling the recognition of the dictation start word.

Further, in the in-vehicle voice recognition apparatus, the means for deselecting the dictation function invalidates the command of the dictation start switch.

Further, in each of the vehicle-mounted voice recognition devices, a signal indicating that the vehicle is traveling is output from the parking switch.

In each of the vehicle-mounted voice recognition devices,
A signal indicating that the vehicle is traveling is output from the vehicle speed sensor.

Further, in each of the vehicle-mounted voice recognition devices, a signal indicating that the vehicle is traveling is output from the GPS receiver.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A voice recognition device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the first of the present invention.
3 is a block diagram showing a voice recognition device that is an embodiment of FIG.
The voice signal input to the voice input unit 1 shown in the figure is compared with the voice pattern stored in the command control dictionary 3a or the dictation dictionary 3b in the voice recognition unit 2, and the input voice is recognized. . The command based on the voice thus recognized controls the corresponding operation of the controlled device 5 by the command controller 4, and in the case of dictation, the voice recognized by the text converter 6 is converted into a character string. It is converted and displayed on the text display unit 7.

The voice recognition unit 2 includes a parking switch 8
The signal from is input and it is detected whether the vehicle is traveling. The operation of the voice recognition device will be described with reference to FIG. When the voice recognition software is activated, first, in step S1, it is determined whether or not voice is input, and when voice is input, the process proceeds to step S2. Step S
In 2, the voice recognition processing is performed by comparing the voice pattern stored in the command control dictionary 3a with the input voice pattern. The command control dictionary 3a contains a dictation start word.

Next, the process proceeds to step S3, and step S
It is determined whether the voice pattern recognized in 2 is a dictation start word, and if it is a dictation start word, the process proceeds to step S5. If the voice pattern recognized in step S2 is not a dictation start word, the process proceeds to step S4.

In step S4, control corresponding to the command obtained from the recognition result is performed, and steps S1 and subsequent steps are repeated. In step S5, the parking switch 8
If it is determined that the parking switch 8 is on, that is, the vehicle is stopped, the dictation process from step S6 is executed. If the parking switch 8 is off, that is, the vehicle is running, the dictation function is disabled. In order to do so, step S1 and subsequent steps are repeated.

In step S6, it is determined whether or not voice is input. When voice is input, the process proceeds to step S7.
In step S7, a voice recognition process is performed by comparing the voice pattern stored in the dictation dictionary 3b with the input voice pattern, and the process proceeds to step S8.

The dictation dictionary 3b includes a dictation end word. Then, step S8
In step S7, it is determined whether or not the voice pattern recognized in step S7 is a dictation end word. If it is not a dictation end word, the process proceeds to step S9. In step S9, the voice pattern obtained from the recognition result is converted into characters, and then in step S10, the text data obtained in step S9 is displayed on the text display unit 7, and thereafter, the operation after step S5, that is, the dictation function is performed. Is repeated. When the voice pattern recognized in step S7 is a dictation end word, the process proceeds to step S1 to end the dictation.

As described above, when the parking switch 8 is off, that is, while the vehicle is traveling, the dictation operation is not performed, so that there is no confusion that causes a dictation state against the intention of the user. In addition, since the dictation operation is prohibited during traveling, it is possible to prevent the driver's concentration from decreasing due to the use of the dictation function during driving, so that safe driving is ensured.

FIG. 3 is a block diagram of a vehicle-mounted voice recognition device according to a second embodiment of the present invention. In this example, instead of starting dictation by recognizing the dictation start word in the first embodiment, it is determined whether the dictation switch 9 controls a command or performs dictation. The other structure of the dictation switch 9 is similar to that of the first embodiment.

The operation of the vehicle-mounted voice recognition apparatus according to the second embodiment will be described with reference to FIG. When the voice recognition software is activated, first, the state of the dictation switch 9 is detected in step S11, and if ON, that is, dictation is selected, the process proceeds to step S15, and if OFF, that is, dictation is not selected. Control goes to step S12.

In step S12, it is determined whether or not voice is input, and when voice is input, step S13.
Move to. In step S13, the command control dictionary 3
The voice recognition processing is performed by comparing the voice pattern stored in a with the input voice pattern. Next, in step S14, control corresponding to the command obtained from the recognition result is performed, and steps S1 and subsequent steps are repeated.

In step S15, the state of the parking switch 8 is determined, and if it is determined that the parking switch 8 is off, that is, the vehicle is running, steps S1 and subsequent steps are repeated to invalidate the dictation function, that is, on, that is, the vehicle is stopped. If it is determined that there is a voice input in step S16, the process proceeds to step S1.
In step 7, the voice recognition process for dictation is performed by comparison with the voice pattern stored in the dictation dictionary 3b. Next, in step S18, the voice pattern obtained from the recognition result is converted into characters, and further,
In step S19, the text data obtained in step S18 is displayed on the text display unit 7, and then in step S19.
The process of 1 or less is repeated.

In this way, the dictation switch 9
Is turned on, that is, dictation is selected, the dictation operation is not performed when the parking switch 8 is off, that is, while the vehicle is traveling, so that the dictation state is set against the user's intention by forgetting to return the switch. Confusion does not occur because such a thing does not occur. In addition, since dictation operation is prohibited during driving, it is possible to prevent the driver's concentration from decreasing due to using the dictation function while driving,
Safe driving is secured.

FIG. 5 is a block diagram of a vehicle-mounted voice recognition device according to a third embodiment of the present invention. In this example, the vehicle speed sensor 10 is used in place of the output signal of the parking switch 8 in the first embodiment, and the signal indicating the vehicle speed from the vehicle speed calculation unit 11 is input to the voice recognition unit to determine whether the vehicle is traveling. A determination is made as to whether or not. The other structure is similar to that of the first embodiment.

FIG. 6 is a flow chart for explaining the operation of the vehicle-mounted voice recognition device according to the third embodiment of the present invention.
In this example, the vehicle speed sensor 10 is used instead of the parking switch 8 in step S5, and the vehicle speed calculation unit 11 is used.
It is judged whether the vehicle is traveling at the vehicle speed from or is stopped. That is, step S5 in the operation of the first embodiment is replaced with the determination as to whether or not the vehicle speed is 0 km, and other operations are the same as those described in FIG.

FIG. 7 is a block diagram of a vehicle-mounted voice recognition device according to a fourth embodiment of the present invention. In this example, instead of the output signal of the parking switch 8 in the first embodiment, a GPS (Global Positioning System) is used.
12, the position calculation unit 13 determines the vehicle speed from the moving distance, outputs a signal indicating the vehicle speed to the voice recognition unit, and the voice recognition unit determines whether or not the vehicle is traveling. Other configurations and operations are similar to those of the third embodiment.

[0032]

According to the on-vehicle voice recognition apparatus of the present invention, the dictation state does not occur against the user's intention during traveling, and the operation corresponding to the command is always performed during traveling. It does not cause confusion among people.

Further, since the dictation operation is prohibited while the vehicle is running, there is no obstacle to safe driving due to the use of the dictation function during driving.

[Brief description of drawings]

FIG. 1 is a block diagram showing a vehicle-mounted voice recognition device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the voice recognition device.

FIG. 3 is a block diagram showing a vehicle-mounted voice recognition device according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the in-vehicle voice recognition device.

FIG. 5 is a block diagram showing a vehicle-mounted voice recognition device according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of the vehicle-mounted voice recognition device.

FIG. 7 is a block diagram showing a vehicle-mounted voice recognition device according to a fourth embodiment of the present invention.

FIG. 8 is a block diagram showing an example of a conventional voice recognition device.

FIG. 9 is a flowchart showing an example of the voice recognition device.

[Explanation of symbols]

1 Voice input section 2 Speech recognition section 3a Command control dictionary 3b Dictation dictionary 4 Command control section 5 controlled equipment 6 Text converter 7 Text display section 8 parking switch 9 Dictation switch 10 vehicle speed sensor 11 Vehicle speed calculator 12 GPS receiver 13 Position calculator

Claims (6)

[Claims] 1. A vehicle-mounted voice recognition device having a dictation function by voice recognition and a device control function,
When a signal indicating whether or not the car is running is input and a signal indicating that the car is running is input, the dictation function is deselected and only the device control function is selected, and the car is not running. A voice recognition device characterized by selecting a designated function from both a dictation function and a device control function when a signal indicating is input. 2. The in-vehicle voice recognition apparatus according to claim 1, wherein the means for deselecting the dictation function disables recognition of a dictation start word. 3. The in-vehicle voice recognition device according to claim 1, wherein the means for deselecting the dictation function invalidates a command of a dictation start switch. 4. The vehicle-mounted voice recognition device according to claim 1, wherein a signal indicating that the vehicle is traveling is output from a parking switch. 5. The in-vehicle voice recognition device according to claim 1, wherein a signal indicating that the vehicle is traveling is output from a vehicle speed sensor. 6. The signal indicating that the vehicle is traveling is GP
The vehicle-mounted voice recognition device according to any one of claims 1 to 3, which is output from an S receiver.