JPH0817507B2 - Electronic device control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a control device for an electronic device that controls, for example, the volume and channel of a television receiver by the voice of a user.

[Outline of Invention]

The present invention relates to a control device for electronic equipment, in which a voice recognition means and a voice detection means are provided in parallel, the equipment is continuously controlled by a recognized control command, and the continuous control is stopped by an arbitrary voice input. A simple structure enables good control.

[Conventional technology]

Various proposals have been made for controlling electronic equipment such as a television receiver according to a user's voice command (Japanese Patent Publication Sho 58).
-24076, Japanese Patent Publication No. 58-24077, etc.).

In such a device, the conventional control method is to recognize a command such as “volume up” or “channel up” voice and change the volume by a predetermined amount or one channel for each recognition. It is being appreciated. However, in this method, the user has to repeatedly issue the above-mentioned voice command in order to obtain a desired volume or channel, which may impose a great amount of effort on the user and increase the burden on the user. There is. In this case, for example, in controlling the volume, it is possible to increase the above-mentioned predetermined amount to increase the amount of change for each recognition, but this makes it impossible for the user to finely control the volume. Will end up.

On the other hand, for example, when the above-mentioned "volume up" voice command is recognized, the volume is continuously controlled in the up direction, and when a voice command such as "stop" is further supplied, the continuous control is stopped. It was suggested to do. However, in this method, voice recognition and device control must be performed by independent circuits, which may result in a complicated and large-scaled device configuration.

That is, for example, in the case of controlling the sound volume, when the command by the sound of "volume up" is recognized from an arbitrary level as shown in FIG. 3, a control signal for sequentially increasing the volume level of the device is formed. Here, this control signal is, for example, a signal whose value increases by a predetermined amount every predetermined time. Therefore, when such a control signal is formed using a CPU, for example, one CPU is occupied. Processing must be done. For this reason, it becomes difficult to recognize, for example, a voice command “stop” using the same CPU during the formation of such a control signal.

Therefore, conventionally, for example, as shown in FIG.
The voice signal picked up in 1) is supplied to the voice recognition circuit (52), the result recognized here is supplied to the device control circuit (53), where a control signal is formed to form an electronic device (54). Was to be supplied to.

However, in this case, the voice recognition circuit (52) and the device control circuit (53) are circuits each having a built-in CPU, and thus requiring two CPUs makes the device configuration complicated and large-scale. Therefore, there is a great possibility that the cost will rise.

[Problems to be solved by the invention]

As described above, the conventional technique has a problem that the device becomes complicated and large-scale, and the cost may increase.

[Means for solving problems]

According to the present invention, a voice detection means (circuit (3)) for detecting the presence or absence of a voice input (microphone (1)) and a control signal corresponding to the content are formed when the content of the voice input is recognized and supplied to an electronic device. At the same time, the recognition / control means (circuit (2)) for stopping the formation of the control signal when the detection signal from the voice detection means is supplied during the formation of the control signal is provided in parallel. The electronic device (4) is continuously controlled by one voice input recognized by the control means, and
A control device for an electronic device, wherein the continuous control is stopped when the presence of a new voice input is detected by the voice detection means.

[Action]

According to this, by providing the simple voice detection circuits in parallel, the continuous control of the device and the stop thereof can be performed by one CPU, and the excellent electronic device can be controlled with the simple configuration.

〔Example〕

FIG. 1 shows an overall block diagram. In this figure,
Reference numeral (1) is a microphone, and the voice input picked up by the microphone (1) is supplied to the voice recognition / device control circuit (2) and the voice input picked up is supplied to the voice detection circuit. This detection signal is supplied to the recognition / control circuit (2). When the recognition / control circuit (2) recognizes the content of the voice input, a control signal corresponding to the content is formed and supplied to the electronic device (4), and voice detection is performed during the formation of the control signal. When the detection signal from the circuit (3) is supplied, the formation of the control signal is stopped.

That is, the recognition / control circuit (2) operates as a voice recognition circuit in the standby state and recognizes a voice input from the microphone (1). When the content of the predetermined voice input is recognized, a control signal is formed according to the content, and thereafter, the operation as the device control circuit is performed. Therefore, these operations can be performed by one CPU by sequentially performing these operations. When a new voice is input during this control operation, this voice input is detected by the voice detection circuit (3), and this detection signal is supplied to, for example, the interrupt control terminal of the CPU to interrupt processing. The formation of the control signal can be stopped at.

Further, FIG. 2 is a diagram showing an example of a concrete circuit. In the voice recognition / device control circuit (2) of this figure, the voice input from the microphone (1) is an amplifier (21), a bandpass filter ( 22) is supplied to the A / D conversion circuit (23) and the converted digital signal is supplied to the CPU (24) for voice recognition. Then, the recognized content is written in the memory (25), and a control signal corresponding to the recognized content is formed and supplied to the electronic device (4).

On the other hand, in the voice detection circuit (3), the voice input from the microphone (1) is supplied to the parallel circuit of the resistor (34) and the capacitor (35) through the amplifier (31), the diode (32) and the resistor (33). Then, the voice input is detected. Then, this detected output is supplied to the comparison circuit (36), and the voltage source (37)
When the detected output exceeds this reference voltage, the detection signal with voice input is taken out.
This detection signal is supplied to the interrupt control terminal of the CPU (24) to stop the formation of the control signal.

In this way, the continuous control of the electronic device by the voice recognition and the stop thereof are performed, but according to the above-mentioned device, by providing a simple voice detection circuit in parallel, one CPU can perform these operations. .

By the way, if the presence or absence of voice input is detected at a fixed level in the above-described device, a malfunction is likely to occur when the device is installed in a place where the ambient noise level is high, for example. On the other hand, if the level of voice input is a level at which voice recognition is possible with respect to ambient noise, it may be considered as voice input.

Therefore, in the above device, the level of the voice input recognized by the CPU (24) is detected, and a control signal corresponding to this detected value is sent to the voice detection circuit (3) via the D / A converter (26). Supply and adjust the detection level. That is, the control signal may be supplied to the variable gain amplifier (31) to adjust the level of the audio input, or the reference voltage of the comparison circuit (36) may be adjusted.

In this way, in this device, good electronic device control can be performed with a simple configuration.

In the above device, the microphone (1), voice recognition /
The device control circuit (2) and the voice detection circuit (3) may be housed in a so-called commander of the remote control device, and the output signals of the devices may be modulated and transmitted to the electronic device (4).

〔The invention's effect〕

According to the present invention, by providing a simple voice detection circuit in parallel, it is possible to perform continuous control and stop of the device with one CPU, and it is possible to perform excellent control of the electronic device with a simple configuration. It became so.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of the present invention, FIG. 2 is a diagram for explaining the same, and FIGS. 3 and 4 are diagrams for explaining a conventional technique. (1) is a microphone, (2) is a voice recognition / device control circuit, (3) is a voice detection circuit, and (4) is an electronic device.

Claims (1)

[Claims] 1. A voice detection means for detecting the presence / absence of voice input, a control signal according to the content of the voice input which is detected when the content of the voice input is recognized and supplied to an electronic device, and a voice detection during the formation of the control signal. The recognition / control means, which stops the formation of the control signal when the detection signal from the means is supplied, is provided in parallel, and the continuous control of the electronic device is performed by one voice input recognized by the recognition / control means. And a control device for an electronic device, which stops the continuous control when the presence of a new voice input is detected by the voice detection means.