JP2004294814A - Remote controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain sufficient performance even in a noisy environment, e.g. during vehicle travelling and to prevent beauty from being spoiled even when a car navigation system is installed later. <P>SOLUTION: A remote controller comprises a microphone 21 for inputting a speech, a speech recognition processing part 27 which recognizes an input speech from the microphone 21 and discriminates a command corresponding to the result of speech recognition, a display part 22 which gives notice of the discriminated command, and a communication function part 26 which sends command data corresponding to the command to a controlled device according to an indication from an operator. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a remote control device, and more particularly to a remote control device suitable for an in-vehicle device having large ambient noise.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, voice recognition has been used as a method of operating a vehicle-mounted device such as a car navigation system from the viewpoint of safety and convenience (for example, see Patent Document 1).
[0003]
By the way, in order to use voice recognition in a car, it is necessary to take measures against noise. Conventionally, a voice recognition device or a voice recognition program has a noise reduction function, or a noise canceller or a directional microphone. And so on.
[0004]
The function of voice recognition was built into the vehicle-mounted device, and the microphone as a voice input device was installed outside the device (mainly a sun visor).
[0005]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 5-82703 [0006]
[Problems to be solved by the invention]
As described above, since a microphone which is an input device for voice recognition has conventionally been often attached to a sun visor or the like, a person with a low voice cannot obtain a sufficient input level, and when a car is running, There was a problem that sufficient performance could not be obtained in the noisy environment.
[0007]
In addition, in order to use voice recognition, it is necessary to wire a cord between a device body such as a navigation device and a microphone, and when the wiring is troublesome and a car navigation system is retrofitted, the wiring may impair the appearance. There was a problem that was.
[0008]
Therefore, an object of the present invention is to provide a remote control device that can obtain sufficient performance even in a noisy environment such as when running a vehicle and does not impair the aesthetic appearance even when a car navigation system is retrofitted. It is in.
[0009]
[Means for Solving the Problems]
In order to solve the above problem, a remote control device includes: a microphone for inputting voice; a command determining unit that recognizes voice input from the microphone and determines a command corresponding to a result of the voice recognition; And a command transmitting unit that wirelessly transmits command data corresponding to the command to the controlled device based on an instruction from the operator.
[0010]
According to the above configuration, the command determination unit recognizes the voice input from the microphone by voice, and determines a command corresponding to the result of the voice recognition.
Accordingly, the command notifying unit notifies the determined command, and the command transmitting unit wirelessly transmits command data corresponding to the command to the controlled device based on an instruction from the operator.
[0011]
In this case, an operation unit for inputting an instruction from an operator may be provided, and the command transmission unit may execute the transmission of the data based on an operation state of the operation unit.
[0012]
An input timing instructing unit for instructing a user to start inputting a voice from the microphone is provided. May be started.
[0013]
Further, the command notifying unit may include at least one of a command display unit that displays the determined command and a voice synthesizing unit that notifies the determined command by voice.
[0014]
Furthermore, the command determination unit may include a voice recognition dictionary storage unit that stores a voice recognition dictionary for performing the voice recognition in an updatable manner.
[0015]
Further, a dictionary receiving unit that receives the update speech recognition dictionary from outside and a dictionary updating unit that stores the received update speech recognition dictionary in the speech recognition dictionary storage unit may be provided. .
[0016]
Further, the command transmission unit may be configured as a short-range wireless communication device using light, ultrasonic waves, and radio waves.
Furthermore, the controlled device may be a vehicle-mounted navigation device.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a preferred embodiment of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a schematic configuration block diagram of the car navigation system according to the embodiment.
[0019]
The car navigation system 10 roughly includes a remote controller 11, a car navigation device 12 having a GPS antenna 12A, and a display 13.
[0020]
The remote controller 11 can be roughly classified into a microphone 21, a display unit 22 for displaying various information including commands, and an operation unit 25 including an utterance button 23 and a recognition result transmission button 24. Have.
[0021]
FIG. 2 is a functional configuration block diagram of the remote controller 11.
[0022]
The remote controller 11 includes a microphone 21, a display unit 22, an utterance button 23, a recognition result transmission button 24, a communication function unit 26, and a voice recognition processing unit 27.
The microphone 21 is used by a user as an operator to input a voice.
[0023]
The display unit 22 prompts the user for various inputs and performs various displays for notifying the user of the voice recognition result.
The utterance button 23 is used by the user to instruct the voice recognition processing unit 27 at a timing for starting voice recognition (recognition start timing).
[0024]
The speech recognition processing unit 27 includes a speech recognition dictionary storage unit 27A that stores a speech recognition dictionary required for speech recognition in an updatable manner, and the speech input from the microphone 21 from the recognition start timing input via the utterance button 23. Is recognized using a known voice recognition processing algorithm, and it is determined whether the recognition result corresponds to any of the registered commands.
[0025]
The recognition result transmission button 24 is used by the user to permit transmission of the command displayed on the display unit 22 to the car navigation device 12.
[0026]
The communication function unit 26 transmits command data corresponding to the timing at which the recognition result transmission button 24 is pressed down to the car navigation device 12 via infrared communication or short-range wireless communication such as Bluetooth (registered trademark). In addition, a voice dictionary or the like for voice recognition is received from the car navigation device 12 via ultrasonic communication, infrared communication, or short-range wireless communication such as Bluetooth (registered trademark).
[0027]
Next, the operation of the remote controller during speech recognition processing will be described.
[0028]
FIG. 3 is a processing flowchart at the time of voice recognition processing of the remote controller.
[0029]
First, the voice recognition processing unit 27 determines whether or not the utterance button 23 has been pressed (step S1). That is, it is determined whether or not the user has instructed to perform voice recognition.
[0030]
If it is determined in step S1 that the utterance button 23 has not been depressed (step S1; No), there is no need to perform the voice recognition process, so the voice recognition processing unit 27 returns the process to step S1, It goes into a standby state.
[0031]
When the utterance button 23 is depressed in the determination in step S1 (step S1; Yes), the voice recognition processing unit 27 permits voice input from the microphone 21 and the user's voice is input from the microphone 21. (Step S2).
[0032]
As a result, the voice recognition processing unit 27 reads the voice recognition dictionary stored in the voice recognition dictionary storage unit 27A based on the voice recognition processing algorithm, performs voice recognition, and stores the input voice in any of the previously registered command. Is determined (step S3).
[0033]
When the voice recognition processing unit 27 determines that the input voice corresponds to any of the commands registered in advance, the voice recognition processing unit 27 displays the corresponding command name on the display unit. At the same time, command data corresponding to the determined command is transmitted to the communication function unit 26 and stored in the communication function unit 26.
[0034]
If the input voice does not correspond to any of the previously registered commands, a message indicating that the command does not exist is displayed on the display unit (step S4).
[0035]
Specifically, when it is determined that the input voice is “menu screen display”, the display unit 22 displays
"Send menu screen display command?
Press the recognition result transmission button or the cancel button. "
Is displayed as follows.
[0036]
If the input voice does not correspond to any of the pre-registered commands due to unrecognition or the like, the display unit 22 displays
"Speech could not be recognized."
Or
"Currently entered command is not available on the current system."
The display is made as follows. Then, the voice recognition processing unit 27 ends the processing.
[0037]
Next, the communication function unit 26 determines whether or not the recognition result transmission button has been pressed (step S5).
[0038]
In the determination of step S5, if the recognition result transmission button is pressed down (step S5; Yes), the communication function unit 26 determines that transmission permission has been given and responds to the command notified from the voice recognition processing unit 27. The corresponding command data is transmitted to the car navigation device 12, and the process ends (step S6).
[0039]
If it is determined in step S5 that the recognition result transmission button has not been pressed (step S5; No), it is determined whether the cancel button has been pressed (step S7).
[0040]
If it is determined in step S7 that the cancel button has been pressed (step S7; Yes), the communication function unit 26 and the voice recognition processing unit 27 end the process without resetting the recognition result and transmitting a command. I do.
[0041]
If it is determined in step S7 that the cancel button has not been pressed, the process proceeds to step S5, and the same process is performed.
As described above, according to the present embodiment, the distance between the user who is the speaker and the microphone 21 can be reduced, so that the S / N of the input voice is improved and the voice recognition rate is improved. Can be achieved.
[0042]
Further, since no wiring is required between the microphone 21 and the car navigation device, even when the car navigation system is retrofitted to the vehicle, the installation is easy and the appearance is not spoiled.
[0043]
In the above description, the display unit 22 is used to announce the speech recognition result. However, as shown in FIG. 4, a speech synthesis unit that synthesizes the speech recognition result and outputs the speech via the speaker 30. 31 may be provided.
[0044]
In addition, the description has been given assuming that the remote control incorporates a voice recognition dictionary necessary for a series of controls. However, the capacity of the voice recognition dictionary is large, and the voice recognition dictionary required for a series of controls cannot be built at once. In this case, after executing the command corresponding to the command data transmitted by the car navigation device main body, the voice recognition dictionary is transmitted to the remote controller to update the storage content of the voice recognition dictionary storage unit 27A, thereby generating a new voice. Recognition can be performed, and complicated control can be realized.
[0045]
Also, if the format of the speech recognition target word is fixed, the remote controller can be used as an input device of another device (for example, a car audio device, a car air conditioner device, an interior light controller, a key lock controller, a blind opening / closing controller, etc.). Can also be used.
[0046]
Further, since the user operates the recognition result transmission button to transmit only the successfully recognized command to the car navigation device 12, the execution of the erroneously recognized command is eliminated, and more reliable control can be performed. .
[0047]
【The invention's effect】
According to the present invention, it is possible to shorten the distance between the user who is the speaker and the microphone, so that the S / N of the input voice is improved, and the voice recognition rate can be improved. As described above, sufficient performance can be obtained even in a noisy environment.
[0048]
In addition, even when the controlled device is retrofitted, it is not necessary to arrange the wiring, and the appearance is not spoiled.
[Brief description of the drawings]
FIG. 1 is a schematic configuration block diagram of a car navigation system.
FIG. 2 is a schematic block diagram of a remote controller.
FIG. 3 is a flowchart of a voice recognition process of a remote controller.
FIG. 4 is a schematic block diagram of a remote controller.
[Explanation of symbols]
10 Car navigation system 11 Remote controller 12 Car navigation device (controlled device)
13 display 21 microphone 22 display unit (command notification unit)
24 Recognition result transmission button (input timing instruction part)
25 operation unit 26 communication function unit (command transmission unit, dictionary reception unit)
27 Speech recognition processing unit (command discrimination unit, dictionary update unit)
27A voice recognition dictionary storage unit 28 cancel button 30 voice synthesis unit (command notification unit)
31 Speaker (Command notification unit)

Claims (8)

A microphone for inputting voice,
A command determination unit that performs voice recognition of the input voice from the microphone and determines a command corresponding to a result of the voice recognition;
A command notification unit that notifies the determined command,
A command transmitting unit that wirelessly transmits command data corresponding to the command to the controlled device based on an instruction from the operator,
A remote control device comprising: The remote control device according to claim 1,
An operation unit for inputting instructions from the operator is provided,
The command transmission unit executes transmission of the data based on an operation state of the operation unit,
A remote control device characterized by the above-mentioned. The remote control device according to claim 1 or 2,
An input timing instructing unit for instructing a user to start voice input from the microphone,
The command determination unit starts voice recognition of an input voice from the microphone based on an instruction from the input timing instruction unit,
A remote control device characterized by the above-mentioned. The remote control device according to any one of claims 1 to 3,
The remote control device, wherein the command notifying unit includes at least one of a command displaying unit that displays the determined command and a voice synthesizing unit that notifies the determined command by voice. The remote control device according to any one of claims 1 to 4,
The remote control device according to claim 1, wherein the command determination unit includes a voice recognition dictionary storage unit that stores a voice recognition dictionary for performing the voice recognition in an updatable manner. The remote control device according to claim 5,
A dictionary receiving unit that receives the voice recognition dictionary for updating from outside,
A dictionary update unit that stores the received update speech recognition dictionary in the speech recognition dictionary storage unit,
A remote control device comprising: The remote control device according to any one of claims 1 to 6,
The remote control device, wherein the command transmission unit is configured as a short-range wireless communication device using light, ultrasonic waves, and radio waves. The remote control device according to any one of claims 1 to 7,
The remote control device, wherein the controlled device is an in-vehicle navigation device.

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