JPS6220019Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a numerical information setting device, and in particular, when inputting time information, temperature information, and other various numerical information, settings are input by pressing the numerical keys depending on the length of time the numerical keys are pressed. The present invention relates to a numerical information setting device in which numerical information is set and inputted as numerical information with carries.

For example, when setting the cooking time of a microwave oven, the time of a kitchen timer, or the time of a clock radio, a keyboard with numeric keys is provided, and various time information can be entered by operating the numeric keys. There is. Furthermore, various electronic devices equipped with arithmetic processing functions, such as electronic desktop calculators, are also provided with numeric keys to input numerical information. For example, when inputting 200, a conventional device for inputting numerical information uses number keys □2, □0, □0 and 3.
In particular, the number of key presses increases as the number of digits with the number "0" increases. In addition, if the time setting device is capable of displaying seconds, if the time information to be input is in minutes, the number key □0 must be pressed twice after the number representing the minute. Ta. For this reason, there were problems in that the number of key operations increased and it took time to set numerical information.

By the way, in order to solve the above-mentioned problems, conventionally, a key is provided that allows you to input the hundreds, thousands, or tens of thousands with a single press.For example, when inputting 200, If there is, use the number key □2 and the hundred key 00 to set 2.
Only one digit is raised. Inputting information in the hundreds, thousands, or tens of thousands with one key requires special keys, complicates the configuration, and increases the size of the keyboard. include. Although the number of key operations can be reduced in this type of device, it is still necessary to operate numeric keys representing significant figures and keys representing units of hundreds, thousands, or ten thousand.

Therefore, this invention was made to solve the problems of the conventional ones as mentioned above.When entering numerical information with 0 in the lower digits, the number of operations of the number keys can be reduced. An object of the present invention is to provide a numerical information setting device which is improved so as to be able to carry up with a small number of numerical keys without providing a key to represent the digit.

To summarize this idea, numerical information is set and input by incrementing the digit by one digit depending on the length of time the numeric key is pressed and adding 0 to the end.

Embodiments of this invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of a numerical information setting device according to an embodiment of this invention. In the configuration, the numerical information setting device 10 of this embodiment has a numerical key group 11 including a 0 key 110 for inputting the number "0" and numerical keys 111 to 119 for inputting the numbers "1" to "9".
and an automatic carry circuit 12 which is an example of carry signal generation means.
and an LSI 13 incorporating a microcomputer, which is an example of a calculation means. This automatic carry circuit 12 includes an OR gate 12 that detects the state in which any of the numeric keys 111 to 119 is pressed.
1, a delay circuit consisting of a resistor 122 and a capacitor 123, an amplifier 124, and an oscillator 125.
, AND gate 126, and number (0) key 11
0 and an OR gate 127 which receives the output of an AND gate 126 as input.

Figure 2 is a time chart to explain the operation of Figure 1. In particular, a shows the case where the number key is pressed to the extent that it does not carry up, and b shows the case where the number key is pressed for a relatively long time to move up by two digits. Indicates the case where c
shows the output waveform of the oscillator 125. In addition, in c, T0 represents the delay time (for example, 1 second) from the time of key input due to the delay circuit and amplifier, and T0
represents the oscillation period (for example, 0.5 seconds) of the oscillator 125, and T1 represents its pulse width (100 msec).

Next, the operation of the numerical information setting device 10 of this embodiment will be explained with reference to FIGS. 1 and 2.

For example, when setting and inputting the one-digit number "2", the number key 112 is pressed for a time shorter than the delay time T0, as shown in FIG. 2a. The press signal (high level) of this number key 112 is LSI1
3 as a numerical input, and also to the OR gate 121. The OR gate 121 derives a high level (hereinafter "H") signal while the numeric key 112 is pressed, and supplies it as one input to the AND gate 126, and charges the capacitor 123 via the resistor 122. At this time, since the pressing period of the number key 112 is shorter than the delay time T0, the output of the OR gate 121 is at a low level (hereinafter referred to as L”),
AND gate 126 does not derive an "H" signal, and therefore OR gate 127 does not derive a carry signal. Therefore, the LSI 13 sets and inputs the one-digit number "2".

On the other hand, when inputting 3-digit numerical information "200", press the numeric key 112 for a relatively long period until the digit can be incremented by 2 digits (T0+T+T1 or more and T0+2T or less) as shown in FIG. 2b. Press. In response to the pressing of this number key 112, a delay time T0 from the key operation time is generated by a delay circuit consisting of a resistor 121 and a capacitor 123 and an amplifier 124.
After that, the oscillator 125 starts the oscillation operation as shown in FIG.
The oscillation pulse shown in is derived and the AND gate 126
Give it as one input. At this time, number key 1
12 continues to be pressed, the other input of the AND gate 126 is given an "H" signal. Therefore, the AND gate 126 derives the output pulse of the oscillator 125 during the pressing period after a certain delay time from the start of pressing the number key, and inputs it to the LSI 13 as a digit input via the OR gate 127. In response to this, LSI13 uses numeric key 11.
After setting the numerical information "2" corresponding to the key being pressed at the start of pressing 2, each time there is a pulse input from the OR gate 127, the previously set numerical information is incremented by one digit as numerical information. Reset.

In this way, since the carry is carried out depending on the length of one press of the number key, there is an advantage that numerical information whose lower digits are 0 can be easily and quickly set. Another advantage is that the setting can be input by freely incrementing the number of digits as necessary, without requiring a special key to represent hundreds or thousands. Furthermore, the time from the start of pressing the numeric key to the generation of the first carry signal is a delay time that is longer than the period T of the carry signal.
Since T0 is selected, there is also the advantage that erroneous carry can be prevented, even if the operator's pressing period is long or short when no carry is carried out, as long as it is within the range of T0.

In addition, in the above-mentioned embodiment, in order to make it easier to understand, a case is shown in which the carry signal generation means is configured with a hardware circuit, but the present invention is not limited to this. This may be accomplished through software processing by providing a program and having the LSI operate based on the program.

By the way, the numerical information setting device 10 of the present invention as described above is not only used for setting time in kitchen timers, clock radios, etc., but also in electronic devices that perform various calculation processes based on input of numerical information. applicable. Therefore, as an example of using the numerical information setting device 10 of this invention, a case will be described below in which the time setting or temperature setting of a microwave oven is performed.

FIG. 3 is an external view of a microwave oven, which is an example of an electronic device using the numerical information setting device of this invention.
FIG. 4 is an illustrative diagram of a keyboard (control panel) and display section used in a microwave oven.

Next, the structure of the microwave oven will be explained with reference to FIGS. 3 and 4. The microwave oven 30 has a housing 31
A door 33 equipped with a window glass 32 is provided on the front surface of the door 33 so as to be openable and closable, and a control panel 40 is provided on the side of the door 33 (on the right side in the figure).

A keyboard 41 is provided on the control panel 40. This keyboard 41 includes a number key group 11 including number keys 111 to 119 for numbers 1 to 9 and a key 110 representing number 0, and a time key indicating that numerical information input by operating the number keys is time information. 42, a temperature key 43 indicating that the numerical information input by operating the numerical keys is temperature, a start key 44, and various other keys. In addition, the control panel 42
A display 45 is provided to display the time or temperature set and inputted by operating the numeric keys, and the time during the cooking operation. This display 45 has, for example, a four-digit segment display in the shape of a Japanese character, with the lower two digits displaying seconds and the upper two digits displaying minutes.

FIG. 5 is a control circuit diagram of the microwave oven 30.
In the configuration, a fuse 511, a latch switch 52, a high voltage control relay contact 53, a primary winding 541 included in a high voltage circuit 54, and a door switch 55 are connected in series, and a plug 512 is connected to both ends of the series circuit to connect the main circuit. Configure. A series circuit of a cooking start relay contact 56 and a fan motor 57 is connected in parallel to the series circuit of the high voltage control relay contact 53 and the primary winding 541. In addition, in the series circuit between the door switch 55 and the fan motor 57,
An oven lamp 58 that illuminates the inside of the microwave oven when the door 33 is opened is connected in parallel. Further, a magnetron 59 is connected to the secondary output end of the high voltage circuit 54.
is connected. In addition, relay contacts 53 and 56
A control unit 60 is provided for on-off control.

Figure 6 shows the control unit 6 shown in Figure 5.
0 is a specific circuit diagram. This control unit 60 includes a keyboard 41 including a number key group 11 shown in FIG. 1, an automatic carry circuit 12, and an LSI 13.
a numerical information setting device 10 including a door sense switch 61, and a temperature probe (thermistor) 62.
and a display 45 that displays time information, temperature information, and other various numerical information set by the LSI 13.
, a relay driver 63 , an output relay 64 for driving the contact 53 , and an output relay 65 for driving the relay contact 56 .

Next, the operation will be explained with reference to FIGS. 3 to 6. For example, when setting and inputting a cooking time of 2 minutes as an example of numerical information, this is done by pressing the numeric keys 112 included in the keyboard 41 for a relatively long time and then pressing the time key 42. When the number key 112 is pressed, the automatic carry circuit 12 generates a carry signal (two pulses) that correlates with the number key press period in the same way as the operation shown in FIG. Set "200" to represent the minute. This cooking time setting value (200) is displayed on the display 63. Further, when setting the heating temperature, the number keys 110 to 119 and the temperature setting key 43 are operated. After that, with the door 33 closed, press the start key 44.
When pressed, the LSI 13 drives the relay driver 63 to control the energization of the output relays 64 and 65 based on the fact that the door sense switch 61 is closed and the temperature probe 62 does not detect a predetermined temperature. By doing so, relay contacts 53 and 56 are closed. As a result, the high voltage circuit 54
AC power is supplied to the primary winding 541 of. Therefore, the high voltage circuit 54 derives a high voltage from its secondary side and applies it to the magnetron 59.
Dielectric heating is performed in an oven within the range 30. And LSI 1 included in the control unit 60
3 deenergizes the output relay 64 and connects the relay contact 53 every time the temperature probe 62 detects a predetermined temperature.
By opening and connecting the relay contact 53, the application time of the magnetron 59 is continuously controlled so as to reach a predetermined temperature. Then, at a preset time, output relays 64 and 65 are deenergized to open contacts 53 and 56, thereby stopping the high voltage supply to magnetron 59. Furthermore, if the door 33 is opened during the cooking operation, the door sense switch 61 detects the open state of the door 33, and the LSI 13
causes relay contact 53 to open. Also, door 33
In response to the opening of the door switch 55, the door switch 55 is opened, thereby cutting off the power to the main circuit.

In this way, the numerical information setting device 10 of this invention can be used to set the cooking time or cooking temperature in a microwave oven by pressing the numerical key "0" several times even when the lower digits are 0 than the significant digits. It has the advantage that you can easily set and input time information and temperature information without having to press the button. Furthermore, since there is no need to press the 0 key, there is an advantage that operational errors can be prevented.

In the above embodiment, the case where the numerical information setting device is applied to a microwave oven is described, but the invention is not limited to this, and it can be applied to devices that set time information such as a kitchen timer or a clock with a radio, or a calculator, etc. It should be pointed out that this method can also be effectively used to set numerical information in various electronic devices that process numerical information.

As described above, according to this invention, when setting and inputting numerical information that includes 0 in the lower digits than the significant digits, the setting can be done easily and quickly without pressing the 0 key many times. Unique effects such as a simple configuration and low cost are achieved without providing a special key.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a numerical information setting device according to an embodiment of this invention. FIG. 2 is a time chart for explaining the operation of FIG. 1. Figures 3 to 6 show an example of a microwave oven to which the numerical information setting device of this invention is applied. In particular, Figure 3 is an external view of the microwave oven, Figure 4 is a plan view of the control panel, and Figure 5 is a plan view of the control panel. The figure shows a control circuit diagram of the microwave oven, and FIG. 6 shows a circuit diagram of the control unit. In the figure, 11 is a group of numeric keys, 12 is an automatic carry circuit which is an example of carry signal generation means, 13 is an LSI which is an example of calculation means, 30 is a microwave oven, 40 is a control panel, 41 is a keyboard, and 50 is an electronic The range control circuit includes a control unit 60.

Claims (1)

[Claims for Utility Model Registration] A keyboard that includes at least numeric keys and inputs numerical information by operating the numeric keys; when a numeric key other than 0 among the numeric keys is pressed, the pressing time of the key; a digit signal generating means that generates a digit signal every time the digit exceeds a predetermined time; A numerical information setting device comprising arithmetic means for carrying the previously set and input numerical information each time a carry signal is given from the generating means, and then setting and inputting the numerical information with zero added thereto.