JPH0323810B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating device using voice recognition means, and is provided with a ready display means for indicating a state in which input of voice recognition is possible, so that voice recognition can be operated at an appropriate timing. It is something.

Conventionally, in heating devices that have digital control units, such as microwave ovens, as the number of cooking menus increases and cooking methods become more complex, many key switches are lined up on the operation panel, making it difficult to find the key. It was inconvenient to use, causing users to press the button incorrectly.

Also, I had trouble turning off the microwave immediately because my hands were full while I was working on something else.

The present invention uses voice recognition means to enable operations by voice instead of using a complicated operation panel, and even if both hands are occupied, controls such as start and stop can be easily performed by simply speaking into the microphone. This heating device is equipped with a ready display means to indicate when the voice recognition means is ready to accept input, and is configured to always operate voice recognition at an appropriate timing, further improving usability. .

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view of the main body of the heating device according to the present invention, and the front of the heating device main body 1 has a door 2 that can be opened and closed.
and an operation panel 3, on which a keyboard group 4, an output display group 5, a ready display section 6, and a time display section 7 are arranged. Further, a microphone 8 for voice input is connected to the main body 1. The user of the device presses "H" on keyboard group 4,
Press any of the keys "MH", "M", "ML", "L", "W" to set the heating output, then press "1OM", "1M", "1OS", " Press the ``1S'' key to set the heating time, and press the ``STA'' key to start heating. The set heating output can be confirmed by the output display group 5 lighting up, and further changes from lighting to blinking during heating. This combination of output and heating time can be set in two or more stages. The "CLR" key can be used to pause heating if it is in progress, and cancel all settings if it is in progress.

Voice can be input and operated from the microphone 8 even from a location far away from the heating device, and the voice recognition means built into the main body 1 recognizes the voices of “start” and “stop” and allows the keyboard to be input and operated. You can freely control it without holding it down with your hands.

The ready display unit 6 is off during voice input or voice recognition determination, and turns on when the next voice input can be accepted after voice determination. Therefore, by looking at this ready display section, the user can immediately know when to input the voice, and for example, when inputting several spoken words in succession, the user can input each word reliably.

FIG. 2 is a block diagram according to the present invention.

The heating source 9 is a magnetron in a microwave oven, and is controlled by an output control means 10 to achieve a predetermined output and heating time. The output control means 10 outputs a PWR output from the controller 11.
Controlled by a signal.

Controller 11 is a key strobe signal
A key input signal taken in from an input means 12 such as a keyboard is stored in a memory 13 by the KSTB. This data such as heating time or output is called back into the controller 11 during the heating operation and becomes basic data for timer control or output control. The controller also outputs display data to the display means 14, such as the output display group 5 and the time display section, to perform a predetermined display.

The voice recognition means 15 includes a voice input section 16 including a microphone 8, a feature parameter extraction section 17, a parameter comparison section 18, and a parameter memory 22. The audio input section 16 amplifies the audio signal input from the microphone 8, and the feature parameter extraction section 17 extracts phonetic features included in the audio signal and converts it into digital data, such as a filter bank, an analog multiplexer, A.D.
Frequency spectrum analysis using a converter can be easily realized. The parameter comparison unit 18 compares the feature parameter group of the audio word registered in advance in the parameter memory 19 with the feature parameter extraction unit 17.
The controller 11 compares the unknown voice with the feature parameters of the unknown voice inputted from the controller 11 to find the distance to each feature parameter group, and if the minimum value of this distance is less than the threshold value, the word corresponding to that parameter is recognized as the word. If the minimum value of the distance exceeds the threshold value, there is no recognized word, so no output is output, or a reject signal is output.

The ready display means 20 consists of the ready display section 6, its driving circuit, etc., and is controlled by the RDY signal from the parameter comparison section 18. The parameter comparison unit 18 inputs characteristic parameters from the time when audio input begins, that is, from the time when audio extraction begins, performs comparison with the parameter memory 19, and finally outputs the determination result to the controller. turns off the RDY signal to indicate that the next audio input cannot be accepted. Also, when the ambient noise is so large that it cannot be compared with the input audio, that is, when the audio cannot be extracted,
Turns off the RDY signal to indicate that it is not possible to accept audio input. After outputting the judgment result, the next audio input can be accepted, so turn on the RDY signal,
The ready display means 20 indicates the status. The controller 11 can be realized by a one-chip microcomputer that also has a built-in memory 13, and the parameter comparison section 18 can also be easily realized by using a microcomputer.

As described above in detail, according to the present invention,
In addition to further improving the usability of the heating device by using voice recognition means, we have also provided a ready display means that indicates the state in which voice recognition input can be accepted, so that even when inputting several words in succession, the timing is always appropriate. can be reliably recognized.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main body of the heating device according to the present invention;
FIG. 2 is a block diagram according to the present invention. DESCRIPTION OF SYMBOLS 1... Main body, 6... Ready display section, 8... Microphone, 9... Heat source, 11... Controller, 12... Input means, 13... Memory, 14...
...Display means, 15...Speech recognition means, 16...Speech input section, 17...Feature parameter extraction section, 18
. . . Parameter comparison section, 19 . . . Parameter memory, 20 . . . Ready display means.

Claims (1)

[Claims] 1. A heating source that heats the object to be heated, a controller that controls this heating source, an input means that instructs the controller to output, heating time, etc., a memory that stores these instructions, and displays the output, heating time, etc. an audio input section including a microphone, a feature parameter extraction section that extracts features included in the audio signal input from the audio input section, and a feature parameter and parameter memory input from the feature parameter extraction section. The voice recognition means includes a parameter comparison section that compares feature parameters of voice words registered in advance with a group of characteristic parameters of voice words and outputs a determination result. and a ready display means that lights up when it becomes possible to accept the input of the next voice after the voice determination.