JPS6130173B2 - - Google Patents

Abstract

PURPOSE:To reduce the influence of noise from a high-frequency wave transmitting source and improve the reliability of a voice announcing function of the heating device by sending an aural signal from voice combining means only at the time of voice combining to a speaker, in a heating device for announcing the operational procedure or the like in voice. CONSTITUTION:Voice combining means 10 registers data for combining predetermined voices on a semiconductor memory, and predetermined voices are combined by the instruction of control means 8 which controls the driving circuit 4 of a magnetron 2, and produces an aural signal 10 and a signal BUSY indicating ''under combination of voices''. An amplifier 11 supplied with a power from an amplifier controller 12 controlled by the signal BUSY, and transmits power to a speaker 7. In a division A which is under combination of voices, power is supplied to the amplifier 11 by the signal BUSY, and in the division B the power supply is stopped so that noises from the magnetron does not leave the speaker 7. whereby reliability of a voice announcing fuction of the heating device having no noise sound.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a notification function for improving the usability of a high-frequency heating device, and in particular to a device that notifies the user of operation means or heating status using voice registered in advance in a semiconductor memory or the like. In,
The purpose is to improve its reliability.

Recent advances in semiconductor technology and information processing technology have been remarkable, and technology has been established that can synthesize a considerable amount of time with one or several chips of LSI, and can now be used in consumer equipment at a relatively low cost. It's here. It is clear that high-frequency heating devices would also be extremely convenient if this technology could be used to notify the user of operating procedures, heating conditions, etc. by voice.

Incidentally, the magnetron is a high-frequency oscillation source for performing high-frequency heating, but at the same time, it is also a very large noise source, and it is essential to consider this noise when making audio notifications.

Therefore, the present invention takes the above-mentioned noise into consideration and provides a highly reliable high-frequency heating device.

Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a metal box forming the outer shell of the vessel body. 2 is a magnetron which is a high frequency oscillation source, and 3 is a waveguide. 4 is a drive circuit for the magnetron 2. Reference numeral 5 denotes an electronic circuit constituting a control means, voice synthesis means, etc. that govern the operation of the high-frequency heating device. Reference numeral 6 denotes an operation section, which has display and input functions. 7 is a speaker, and 8 is its sound hole.

FIG. 2 is a functional block diagram. Reference numeral 9 denotes a control means, and 10 denotes a voice synthesis means. Data for synthesizing voices is registered in advance in a semiconductor memory or the like, and a predetermined voice is synthesized according to an instruction from the control means 9. The audio signal from the audio synthesis means 10
AO and a signal BUSY indicating that speech synthesis is in progress are output. 11 is an amplifier, the output of which is sent to speaker 7
connected to. Moreover, the power supply to the amplifier 11 is
This is done via amplifier control means 12 which is controlled by the BUSY signal.

FIG. 3 is a functional block diagram of another embodiment,
The control means 9 controls the amplifier control means 12.
This is done directly using the VCNT signal from.

4 and 5 are concrete examples of circuits for implementing the amplifier 11 and amplifier control means 12 of the present invention. Amplifier 11 is an audio amplifier
I am using LM386. The amplifier control means uses a PNP transistor in FIG. 4 to control the (+) power source of the amplifier 11, and in FIG. 5, uses an NPN transistor to control the (-) power source. 13 is a volume resistor for adjusting the volume;
14 is a capacitor.

Based on the above configuration, the operation of the present invention will be explained using FIG. 6.

FIG. 6 shows the BUSY signal or VCNT signal. is a signal input to the amplifier 11, and is a signal obtained by superimposing the noise emitted from the magnetron 2 on the audio signal output from the audio synthesis means 10 shown by. Therefore, the present invention
During section A where speech synthesis is in progress, the BUSY signal or
Power is supplied to the amplifier 11 by the VCNT signal, and the power supply is stopped in the other section B to prevent noise from the magnetron 2 from being emitted from the speaker 7 as much as possible.

As described above, according to the present invention, noise from a high-frequency oscillation source can be prevented from being output through the speaker except during speech synthesis. In addition, during speech synthesis, the S/N ratio is good because the audio signal is larger than the noise, so the noise is not so noticeable, so there is no annoying noise, and it has a highly complete audio notification function. A convenient high frequency heating device can be provided.

Furthermore, if the amplifier is operated only when necessary as in the above embodiment, the life and reliability of the amplifier will be dramatically improved.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is a diagram showing the same functional block, FIG. 3 is a diagram showing another functional block, and FIG. 4 is a circuit diagram of the functional block. FIG. 6 is a diagram showing signal waveforms. 1...Metal box body, 2...Magnetron, 7...
Speaker, 9...control means, 10...speech synthesis means, 11...amplifier, 12...amplifier control means.

Claims (1)

[Claims] 1. A high-frequency oscillation source, a control means for controlling heating by the high-frequency oscillation source, and a voice synthesizer for synthesizing pre-registered voices according to instructions from the control means. means, an amplifier for amplifying the voice signal output from the voice synthesis means, a speaker connected to the output part of the amplifier, and a device for sending the voice signal from the voice synthesis means to the speaker only during voice synthesis. Features of high-frequency heating equipment. 2. The high-frequency heating device according to claim 1, further comprising amplifier control means for driving the amplifier only when the voice synthesis means performs voice synthesis.