JPS6155685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microwave oven that performs cooking according to a cooking program.

In recent years, microwave ovens have been developed in which not only the cooking time, temperature, etc. can be set in advance according to the item to be cooked, but also the program to be set in this way can be stored. However, for ordinary housewives who are not accustomed to such operations,
On the contrary, it became difficult to handle, and there was a risk of erroneous operation.

As a means to resolve such inconveniences, attempts have been made to link a voice processing device developed to be used as an input/output means of an information processing device to a microwave oven. Microwave ovens that can give instructions to the user have been realized.

FIG. 1 shows the configuration of a microwave oven that operates as described above. In the figure, 1 is a microcomputer (hereinafter abbreviated as μCOM) that controls the microwave oven, and 2 is a heating means controlled by μCOM 1, which is composed of a magnetron that generates microwaves. Reference numeral 3 denotes a temperature detection means for supplying temperature information to the μCOM 1, which is composed of a thermistor or the like whose resistance value changes depending on the temperature. 4 is a keyboard for inputting cooking programs to the μCOM 1 mentioned above, and has number keys from 0 to 9,
Each key such as TIME, POWER, START, and END is provided. 5 is a display that displays cooking time and the like.

Reference numeral 6 denotes a read-only memory (hereinafter referred to as ROM) of, for example, 32K bits, in which voice data of voice instructions necessary for the cooking program of the microwave oven is addressed and stored in pieces; 7 denotes the above-mentioned μ;
This is an audio data editing device that decodes audio output commands from COM 1 and reads audio data of necessary instruction voices from the ROM 6, and specifies addresses of the audio data stored in fragments in this ROM 6. 8 is a speech synthesizer that synthesizes a speech waveform according to the speech data string read from the ROM 6; 9 is an amplifier that amplifies the speech waveform signal obtained from the speech synthesizer 8; 10 is the amplifier 9; This is a speaker that converts the audio waveform signal from the speaker into audio.

In the existing microwave oven as described above, the voice data editing device 7, which performs control for synthesizing the instruction voice necessary for the cooking program, is composed of a digital control means similar to the μCOM 1 described above, which executes the cooking program. It is desirable to incorporate the control function of the audio data editing device 7 into this μCOM1.

However, the 4-bit μCOM currently commonly used as a control means for home appliances
Since the number of terminals is often 40, it is not possible to incorporate the control function of the audio data editing device into the 40-pin μCOM1. That is, the μCOM 1 uses 4 pins for the power supply terminal and the clock terminal, and 2 pins are connected to the heating means 2 and 5 pins are connected to the temperature detecting means 3 as data lines from the μCOM 1 necessary to execute the cooking program. Books, 4 on keyboard 4, 16 on display
Since a book was used, the input/output terminals left on the μCOM1 were 9 pins, and it was impossible to directly connect the 32K-bit ROM6, which required at least 12 address lines, to the μCOM1. .

The present invention has been made in view of the above-mentioned circumstances, and is intended to reduce the number of address lines necessary for addressing audio data stored in a ROM.

FIG. 2 shows the configuration of the microwave oven of the present invention. In the figure, 1' is a μCOM equipped with a 40-pin input/output terminal like the μCOM1 used in the existing microwave oven shown in FIG. It has a built-in control means for editing the instruction voice necessary for the program. Numerals 2 to 5 are the same heating means to display as shown in Figure 1, and 6 is a 32K bit ROM similar to that shown in Figure 1, and more specifically, it samples the audio waveform at 64KHz as audio data. Compare each sampling value with the previous sampling value, 1 if it is larger, 0 if smaller
This uses an 8-bit unit code that is subjected to delta modulation. 11A, 11B, and 11C are three counters each having a 4-bit structure to which the four address lines from the μCOM 1' are connected in common, and the 12-bit address of the ROM 6 output from μCOM 1' in 4 bits each. 3
After the data is divided and stored, it is counted as one address counter to specify the address of the ROM 6. 12 follows the input from μCOM1' using two code lines,
4 types of signals on upper counters 11A, 11B, 11
A counter selection decoder that outputs to C, and μ
These counters 11A, 11B, 1 from COM1'
1 of counters 11A, 11B, and 11C in synchronization with the sequential transmission of addresses divided into three into 1C.
The counters 11A, 11B,
11C in order to enable storage,
By outputting a signal to one more signal line, these counters 11A, 11B, 11C
This allows the address counter to perform a counting operation as one address counter.

Reference numeral 13 denotes a command decoder for decoding instruction information codes such as end instructions and loop instructions stored in the ROM 6 together with audio data, and there are three data lines corresponding to the instruction information.
Connected to COM1'. Numeral 14 is a multiplexer, which transmits audio data obtained by delta-modulating the audio waveform in 8-bit units obtained from the ROM 6 to the audio synthesizer 8 bit by bit. The audio waveform signal obtained by the audio synthesizer 8 is emitted as audio by the speaker 10 via the amplifier 9.

In such a microwave oven, the data lines necessary for the μCOM 1' to edit audio data are connected to three counters 11A, 11B, and 11C.
There are two decoders for the counter selection decoder and three decoders for the command decoder, for a total of nine decoders. The μ
COM1' is a 40-pin input that includes these nine data lines, the previously disclosed 27 data lines for executing the cooking program, and the four lines required for power and clock. The number of output terminals is within the number of terminals provided in μCOM1'.

An example of a simple operation of the microwave oven of the present invention as described above will be specifically explained. When the speaker of the microwave oven utters the instruction voice "cooking time", the μCOM1' stores the flow of voice data such as "Cooking time", and the first voice data is The 12-bit address is stored in the counters 11A, 11B, and 11C in 4 bits each.

That is, signals are sent to the counters 11A, 11B, and 11C in sequence, and the counter 11 is sent only when the first 4 bits of this address are output from μCOM1.
A can be stored, and the next 4 bits are μCOM
Only when the last 4 bits are output from μCOM1, the counter 11B is enabled to store, and only when the last 4 bits are output from μCOM1 is the counter 11C enabled to store.

Next, μCOM1' outputs an increment signal from this counter selection decoder 12, and
The address of the ROM 6 is specified by executing a counting operation in which the temporarily stored 12-bit addresses are incremented by 1 in the three counters 11A, 11B, and 11C. Furthermore, when the instruction information code from the ROM 6 is obtained, the specification of audio data according to the instruction information decoded by the command decoder 13 is resumed.
The flow of voice data is transmitted to the voice synthesizer 8, and the synthesized voice ``cooking time'' is output from the speaker 10. If the user who heard this synthesized voice requires 10 minutes of cooking time,
By pressing □1□0 on keyboard 4, the above μ
COM1' stores this 10 minute cooking time in a cooking time memory (not shown) built into μCOM1'. Next, the user presses, for example, □6□0 on the keyboard 4 in response to the instruction voice "power" that is similarly uttered.
COM1' stores this 60% cooking power in a power memory (not shown). The microwave oven with the cooking program memorized in this way starts operating at the same time as the user presses START on the keyboard 4, and the magnetron, which is the heating means 2, starts operating at 60%.
Drive for 10 minutes with duty square wave voltage.

When this heating cooking is completed, the μCOM 1' shifts to voice synthesis control, and similarly to the above, creates an instruction voice "cooking complete" and makes it utter from the speaker, thereby informing the user that the cooking is complete. We will inform you of this and stop the operation of this microwave oven.

As is clear from the above description, the microwave oven of the present invention includes a memory in which voice data of instruction voices is assigned and stored, a plurality of address counters arranged in parallel, and addresses of the memory are divided into the address counters. The memory is equipped with a counter selection decoder for storing the address counters, and a speech synthesizer for synthesizing speech waveforms based on the speech data. The number of bits used for the address divided by the number of address counters is used to specify the address of the voice data necessary for the instruction voice, so it is necessary to specify the address from the control unit to the above memory. The number of data lines can be greatly reduced. Therefore, the present invention realizes a microwave oven that can execute a cooking program and issue voice instructions even though it uses a control device such as μCOM which has a limited number of input/output terminals, and its practicality is improved. It is a big thing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the structure of an existing microwave oven, and FIG. 2 is a block diagram showing the structure of the microwave oven of the present invention, where 1 and 1' are μCOM, 2 is a heating means, 4 is a keyboard, and 6 is a block diagram showing the structure of a microwave oven according to the present invention. is ROM, 8 is a speech synthesizer, 11A, 11B, 11C are counters, 1
2 represents a counter selection decoder, 13 represents a command decoder, and 14 represents a multiplexer.

Claims (1)

[Claims] 1. In a microwave oven that performs cooking according to a cooking program, there is a memory that addresses and stores audio data of instruction voices necessary for the cooking program, and a plurality of parallel memory devices that specify the address of the memory. an address counter, a counter selection decoder for dividing and storing the address of the memory in the address counter, a speech synthesizer for synthesizing a speech waveform based on the speech data obtained from the memory, and a speech synthesizer for synthesizing a speech waveform based on the speech data obtained from the memory; The address counter is composed of a speaker that converts the audio waveform signal into audio, and a single microcomputer-configured control unit that controls the execution of the cooking program and the output of the instruction audio. The number of data lines from the control unit that are connected in common to each of the controllers is reduced to a value obtained by dividing the number of bits used for the address of the memory by the number of address counters, A microwave oven characterized in that a circuit for executing a cooking program, such as a key means and a display means, is connected to a single microcomputer of a control section.