JPS6234199B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voice remote control device for household appliances such as televisions and radio receivers.

Conventionally, for example, a method for remotely controlling a television receiver or the like by voice includes a built-in voice recognition circuit that recognizes voice commands to control channel selection, etc., and emits ultrasonic waves or infrared rays or other visible light according to the recognized content. A transmitter, that is, a wireless remote controller, is installed on the transmitting side to properly modulate and emit the ultrasonic waves, while the controlled equipment side, such as a television receiver, receives the transmission medium such as ultrasonic waves and demodulates them to generate control command voices. 2. Description of the Related Art A so-called audio remote control system is known, which is provided with a receiving circuit that performs control according to content.

A typical specific configuration of such a system is, for example, the configuration shown in FIG. In other words, this type of system has a speech recognition circuit 1 that recognizes input speech.
, a modulation output unit 2 that modulates and emits a transmission medium such as ultrasonic waves or infrared rays based on the recognition result of the voice recognition circuit 1, and an interface for registering a control command voice to be recognized in advance with the voice recognition circuit 1. It consists of an input section 3.
A speech recognition circuit 1, which is the functional center of these recognition devices, includes a microphone 4, an amplification circuit 5 including AGC, a feature extraction circuit 6 for extracting speech features, and a speech recognition circuit 1 that uses pre-registered speech features as a standard pattern. A buffer memory 8 temporarily stores the characteristic pattern extracted from the standard pattern memory 7 input voice, which is programmed to compare the contents of the memory with the contents of the standard pattern memory 7 stored in advance to identify the input voice. It is composed of a CPU 10 having a ROM 9, and an I/O port 11 which is an interface between these microcomputer systems and external circuits. Further, the modulation output section 2 outputs an infrared light emitting LED 1 according to a digital code that the CPU 10 outputs to the I/O port 11 as a result of identification of the input voice, that is, recognition result, for example, when the transmission medium is infrared.
It consists of a modulation circuit 13 that modulates the LED appropriately and a drive circuit 14 for the LED.

FIG. 2 shows the configuration of the interface section 11 in the case of a remote control system for a television receiver, for example. Turn off the TV,
3 display LEDs 15, 16, 17 to instruct volume increase/decrease, input of channel number, etc., character display
Display devices or input switches such as an LED 18, a registration mode switch 19, a speaker designation switch 20, a clear switch 21, and a power switch 23 of the remote control device are connected to the I/O port 11. In this case, when registering the control command voice, press the registration mode switch 19 and the speaker designation switch 20 in this order, and then utter the voice according to the display on the LEDs 15, 16, 17 or the character display 18, which automatically step in sequence. For example, control command sounds corresponding to power, volume up, volume down, and channel number are sequentially input into the standard pattern memory 7. When the voice registration is completed, the registration mode switch 19 is released and the recognition mode is entered.

Not limited to the above-mentioned TV receiver remote controller, but in general, in this type of control device, only powering on (starting operation) of the controlled device is not controlled by voice, and manually using the switch 22 may cause malfunction. (Electrical Appliance and Material Control Law)

Now, such a conventional device usually has a dry battery power source 24, and all the circuits are energized by this.
The current consumption of electronic circuits centered on the microcomputer 10 is large compared to the capacity of the power supply battery, and therefore, as can be seen in the conventional circuit example in Figure 1, the power switch 22 must be opened when the remote controller is not in use. Care has been taken to avoid unnecessary current consumption.

The present invention automatically controls the power supply of a remote controller built into such a speech recognition device, and automatically controls the power supply of the speech recognition device in accordance with the power on/off of a controlled device. The present invention will be explained in detail below based on FIG.

First, for the reasons mentioned above, the power to a controlled device such as a television receiver is manually turned on using the switch 22, but in the embodiment of the present invention, the power-on switch 22 is conductive only while the push button is pressed. This is connected in parallel with a power supply circuit contact 26 connected in series with the battery 24, and a memory circuit 27 is connected to these contact circuits as shown in the figure to remember that the power has been turned on. At the same time, the contact 26 is closed and maintained as the power activation by the power supply switch 22 is memorized. At the same time, the storage circuit 27 outputs a control signal to the modulation circuit 13, and the modulation circuit 13 controls the output of the transmission medium 12 via the drive circuit 14 in order to turn on the power of the controlled device. In this state, voice commands such as channel selection and volume adjustment are recognized by the voice recognition circuit 1, and corresponding commands are given to the controlled equipment using a signal transmission medium. Now, when the voice recognition circuit 1 recognizes the control voice instructing to turn off the power of the controlled device in the recognition mode with the power supply circuit contact 26 being self-held by the memory circuit 27, the CPU 10 It instructs the modulation circuit 13 to output via the O port 11, and also outputs a reset signal from the I/O port 11 to reset the memory circuit 27 via the delay circuit 28, thereby opening the power supply self-holding contact 26. This reset signal is directly input/output by the CPU10.
Instead of the configuration shown in the figure that outputs the code through the port 11, a decoder (not shown) is provided in the modulation circuit 13 that also receives the code corresponding to the power cutoff from the I/O port 11, as shown by the bold line in the figure. It can be used as a signal.

FIG. 4 shows a more specific circuit example, in which a memory circuit 27 that memorizes power-on and generates a modulation signal is composed of a magnetic relay 30 and a one-shot multivibrator 31, an I/O port 11, and a delay circuit 28. By operating the second relay 32 via the relay 30, the contact 33 of the relay connected in series with the relay 30 is opened and the entire circuit is turned off.

FIG. 5 shows yet another embodiment in which the microcomputer 10 processes all of the above-mentioned memory retention, generation of the power-on signal, and generation of delay pulses after recognition of the power-off command voice, as shown in FIG. The microcomputer 10 is connected in parallel with the power switch 22.
A switch circuit 34 is provided whose opening/closing is directly controlled by the switch. In this case, the switch 34 may be a simple analog switch or a relay circuit. As described above, the present invention controls the power supply of the remote controller itself in accordance with the recognized voice content of a remote controller that controls equipment by voice, thereby making it possible to efficiently operate the power source battery.

As is clear from the above description, the present invention is configured such that the power supply OFF control for the remote controller itself, which remotely controls electrical equipment by voice, is also performed in response to a power OFF command for the electrical equipment. The controller can be operated with high efficiency, and unnecessary battery consumption can be avoided.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the configuration of an existing remote controller, Figure 2 is an electric circuit diagram showing details of its main parts, Figure 3 is a block diagram showing the configuration of the device of the present invention, and Figure 4 is its main components. FIG. 5 is a block diagram showing another embodiment of the present invention, in which 1 is a speech recognition circuit, 2 is a modulation output section, 3 is an input section, and 11 is an interface. face,
22 is a manual power switch, 24 is a battery, 26 is a self-holding switch, and 27 is a memory circuit.

Claims (1)

[Claims] 1. In a remote control device that remotely controls various electrical devices using voice, the voice is recognized by emitting voice, and the signal transmission medium is placed at a remote location in response to the voice command. Equipped with a voice remote controller that sends a message to electrical equipment, and turns on the power to the electrical equipment using the remote controller.
Commands are given manually without relying on voice, and in response to this manual operation, power is also started to be supplied to this remote controller, enabling voice recognition operations on the remote controller, and furthermore, power OFF commands for electrical equipment can be sent via voice. A remote control device characterized in that, when given a power OFF command, it gives a power OFF command to an electrical device via a signal transmission medium and also stops power supply to a remote controller.