JP2004038238A - Numerical value adjustment method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a numerical value adjustment method for reducing the number of components of an input means, and for enabling a user to efficiently perform an operation to adjust numerical values into values greatly different from numerical values designated at present in a device where it is necessary for the user to adjust numerical values. <P>SOLUTION: This numeric adjustment method comprises a display means for displaying numerical values to be adjusted as digital numerical values or analog numerical values, an input means for inputting an increasing or decreasing direction and variation, and a converting means for converting the input increasing or decreasing direction and the input variation into the variation of the numerical values to be adjusted. The converting means converts the unit amount of displacement or the product of the input variation and the unit amount of displacement into positive/negative according to the input increasing or decreasing direction as variation, and when the input variation increases beyond a predetermined value, the unit amount of displacement increases, and when a state that the input variation is considered as 0 continues in a predetermined period, the unit amount of displacement is set as the minimum value, and when the input increasing and decreasing direction is switched, the unit amount of displacement is maintained. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for adjusting a numerical value displayed by a user, such as a measurement control device and a portable information terminal.
[0002]
[Prior art]
In a measurement control device or the like, in order for a user to specify a numerical value, some input / adjustment mechanism operated by the user is required. For example, in the case of a device for digitally displaying numerical values, one of the simplest configurations for the user is an input switch for inputting numerical values from 0 to 9 and other necessary symbols such as a decimal point and operations such as left and right movement. Are provided independently of each other. However, this requires a considerable number of input switches and corresponding input circuits, and increases costs, which may result in a configuration requiring excessive costs compared to the necessity of numerical adjustment operations in the device. Further, since more than ten input switches require a corresponding installation area, the panel design of the device may be limited.
[0003]
Therefore, as another configuration for adjusting the numerical value, one provided with two input switches respectively corresponding to the increase and decrease of the numerical value, and the other provided with a rotary encoder corresponding to the rotational direction corresponding to the increase and decrease of the numerical value were devised. . In the former case, pressing one switch increases the numerical value by the minimum unit, and pressing the other switch decreases the numerical value by the minimum unit. The latter increases the numerical value by the minimum unit when one is rotated by a predetermined amount, and decreases the numerical value when rotated in the opposite direction.
[0004]
However, with these configurations, when trying to adjust the numerical value to a value that is significantly different from the currently specified numerical value, the number of times the switch is pressed and the amount of turning the rotary encoder are increased, and it takes a lot of trouble and time. . For this reason, in these configurations, if the switch is kept depressed, the unit for displacing the numerical value is increased, or if the rotary encoder is rotated at high speed, the displacement is increased in proportion to the rotation speed. Improvements have been made to make the displacement speed variable.
[0005]
[Problems to be solved by the invention]
However, in the above-described configuration in which the speed is variable, for example, in the case of a rotary encoder, it is necessary to continue rotating at a relatively high speed in order to keep the numerical value largely displaced. I had to do a seemingly contradictory operation of continuing high-speed rotation and stopping at an appropriate point. If the numerical value goes too large while continuing to rotate, it is known that the rotary encoder must be rotated again in the reverse direction at a high speed and stopped at an appropriate position, so that the user's psychological burden on the operation is large. .
[0006]
The present invention relates to a device in which a user needs to adjust a numerical value, in a case where the number of parts is reduced and a numerical input switch is used instead of a numerical input switch, for example, when one rotary encoder is used, the numerical value at which the user currently specifies a numerical value It is an object of the present invention to provide a numerical value adjustment method that can efficiently perform an operation of adjusting to a value that is significantly different from the above.
[0007]
[Means for Solving the Problems]
The present invention has been made in view of these problems, and is a method for adjusting a displayed numerical value, a display means for displaying a numerical value to be adjusted as a digital numerical value or an analog numerical value, Input means, and a conversion means for converting the input increase / decrease direction and the input change amount into a displacement amount of the numerical value to be adjusted, the conversion means comprising a unit amount of displacement or the input change amount and the displacement. The product of the unit amount is positive or negative according to the input increase / decrease direction is defined as the displacement amount, and when the input change amount exceeds a predetermined value, the unit amount of the displacement is increased, and the input change amount is increased. A numerical adjustment method is proposed in which the unit amount of the displacement is set to a minimum value when a state that can be regarded as 0 continues for a predetermined period, and the unit amount of the displacement is held when the input increase / decrease direction is switched. Than it is.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
In the numerical value adjustment method according to the present invention, the user adjusts the numerical value displayed on the display device by increasing or decreasing the numerical value using input means such as a rotary encoder. The information input by the input means is converted and reflected in the change of the numerical value. The conversion method is as follows. First, the information input by the input means is converted into information on the direction of increase or decrease with respect to the numerical value to be adjusted and information on the speed with respect to a change in the numerical value. For example, if the input means is a rotary encoder, the increasing / decreasing direction is the direction in which the rotary encoder rotates, and the speed is the rotational speed at which the rotary encoder rotates. On the other hand, a unit for displacing the value to be adjusted is determined in advance. If the numerical value to be adjusted is an integer in decimal notation, the unit amount of displacement is generally set to 1, 10, 100,... According to the digit of the numerical value to be displayed.
[0009]
Further, the rotational speed of the rotary encoder is similarly divided according to the level of the unit amount of displacement. Then, each time the measured rotational speed of the rotary encoder exceeds the level, the unit amount of displacement is increased, for example, 1, 10, 100. Here, the unit amount of the displacement once increased is not reduced unless the rotational speed of the rotary encoder becomes a state that can be regarded as 0 continuously for a certain period.
[0010]
That is, instead of making the amount of change in the input means proportional to the displacement of the numerical value to be adjusted, the change in the amount of change in the input means is used for switching the unit amount of the displacement of the numerical value to be adjusted. Thus, even if the amount of change in the input means is basically the same, it is possible to increase or decrease the numerical value to be adjusted in different unit amounts of displacement. Of course, it is also possible to adopt a configuration in which the amount of change in the input means is further proportional to the unit amount of displacement and used as an element that causes a larger displacement. In addition, when the rotation direction of the rotary encoder is switched, if the rotation speed does not continuously become zero for a certain period of time during the switching and does not become zero, the unit amount of the displacement of the numerical value to be adjusted is not reduced.
As the input means, it is possible to use a joystick, a dial, a mouse, a mouse wheel, or the like, in addition to the above-mentioned rotary encoder. In the case of a joystick, the increasing / decreasing direction is the operation direction for the stick, and the change amount is the magnitude of the operation for the stick. In the case of a dial, the direction of increase / decrease is the direction of rotation of the dial, and the amount of change is the angle of rotation of the dial from a reference position. In the case of a mouse, the increasing / decreasing direction is the moving direction of the mouse, and the amount of change is the moving speed of the mouse. In the case of a mouse wheel, the increasing / decreasing direction is the rotating direction of the wheel, and the amount of change is the rotating speed of the wheel. As described above, any device capable of inputting the increase / decrease direction and the amount of change can be used as input means. Further, the increase / decrease direction and the change amount may be assigned to independent and independent input means. For example, the direction of increase or decrease can be switched by a toggle switch, and the amount of change can be used as the dial rotation angle.
[0011]
[Action]
The numerical value adjustment method according to the present invention includes a display unit that displays the numerical value to be adjusted as a digital numerical value or an analog numerical value, an input unit that inputs a change direction and a change amount, and the input numerical value and the input change amount and the input change amount Conversion means for converting the displacement into a positive or negative value according to the input increase / decrease direction. If the input change amount exceeds a predetermined value, the unit amount of the displacement is increased, and if a state in which the input change amount can be regarded as 0 continues for a predetermined period, the unit amount of the displacement is set to a minimum value. However, when the input increase / decrease direction is switched, the unit amount of the displacement is held, so that the displayed adjustment target numerical value can be increased / decreased by the input means.
[0012]
The amount of change in the input means and the level of the unit amount of displacement of the numerical value to be adjusted are associated in advance, and when the amount of change in the input means increases, the unit amount of displacement is increased. Can be added. Further, even if the amount of change in the input means is reduced thereafter, the unit amount of the displacement is kept large as long as the amount of change does not become 0 continuously for a certain period of time. You can keep adding.
[0013]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not necessarily limited to the following Examples.
Hereinafter, details of the first embodiment will be described with reference to the accompanying drawings. FIG. 1 is an electrical block diagram of a numerical adjustment device described in the following embodiment. However, only the configuration necessary to explain the numerical adjustment method according to the present invention has been described. FIG. 2 is a state transition diagram of numerical values to be adjusted in the present embodiment.
[0014]
In FIG. 1, a CPU 1 is a central processing unit and executes calculation processing. The ROM 2 is a read-only non-volatile memory, and incorporates programs executed by the CPU 1 and initial values of data. The RAM 3 is a readable and writable random access memory, and is used as a work area when the CPU 1 executes a program. The CPU 1 is connected to the ROM 2, the RAM 3, the rotary encoder 5, and the display device 4 via an input / output port or a bus. Further, the CPU 1 has a built-in timer and can measure time. The CPU1, ROM2, RAM3, and timer modules may be enclosed in one package and used as a one-chip computer having input / output ports or bus terminals, or may be obtained by connecting separate components on a board. Alternatively, a plurality of substrates may be connected by a cable or the like.
[0015]
The display device 4 has at least a function of displaying a numerical value to be adjusted. Here, a digital display device that displays a numerical value as characters in a plurality of digits is used. Specifically, for example, a character liquid crystal display device capable of displaying numbers and, if necessary, a decimal point symbol and a negative sign, and displaying the required number of digits, and a dot number capable of displaying the required number of digits and symbols, etc. A graphic liquid crystal display device or a device in which 7-segment LED display members are arranged in required digits can be used.
[0016]
The rotary encoder 5 allows the user to rotate the knob in a clockwise / counterclockwise direction, and outputs information indicating in which direction and how much. Here, a general optical incremental rotary encoder is used, but a rotary encoder of another type such as a contact type or a magnetic type may of course be used. Mechanically, the rotary encoder 5 can rotate in any direction without limitation as long as a force is applied from the outside, and stops when the force is stopped.
[0017]
The detection principle is as follows. A disk is mounted coaxially with the knob, slits are provided intermittently at appropriate circumferential positions on the disk, and the light-emitting element and the light-receiving element are placed facing each other with the disk interposed. When the knob is rotated, light from the light emitting element to the light receiving element passes or is blocked. Therefore, by detecting the reception signal of the light receiving element as a pulse and counting, it is possible to measure how much the signal is rotated. In addition, two sets of light-emitting elements and light-receiving elements are installed with their phases shifted from each other, and the rotation direction can be detected by comparing output pulses (generally called A-phase and B-phase) of the respective light-receiving elements. it can.
[0018]
This type of rotary encoder can detect in which direction and how much rotation has been made since a certain point in time, but cannot detect the absolute value of the rotation angle, and is therefore called an incremental type. The CPU 1 detects the rotation of the rotary encoder 5 by one unit in the clockwise direction or by one unit in the counterclockwise direction by inputting the A-phase and B-phase outputs of the rotary encoder 5 and comparing the pulse change manners. can do. The CPU 1 measures, for example, a fixed time interval of 100 to several 100 ms by a built-in timer and counts the pulses output from the rotary encoder 5 within the fixed time, thereby determining the rotational speed of the rotary encoder 5 at that time. You can ask.
[0019]
Next, a numerical value adjusting method using the rotary encoder 5 will be described in detail with reference to a state transition diagram of numerical values to be adjusted in FIG. In the state transition diagram, a state is described in a square with rounded corners, and a transition from one state to another state or the same state is represented by an arrow. The arrow indicates the event that causes the transition, and the condition that the event should satisfy is indicated in brackets. A state transition occurs only when an event that satisfies the condition in brackets occurs. Hereinafter, it is defined that the value is increased when the knob of the rotary encoder 5 is rotated clockwise (CW), and is decreased when the knob is rotated counterclockwise (CCW). Accordingly, the rotational speed of the rotary encoder 5 is set to be positive when rotated in the clockwise direction and negative when rotated in the counterclockwise direction, in accordance with the increase / decrease direction. Also, the unit amounts of the numerical displacement are 1, 10, and 100. Further, the rotational speeds of the rotary encoder 5 used as a reference for switching the unit amount of displacement are defined as v1 and v2. When the rotation direction is counterclockwise, the unit amount of the displacement and the rotation speed used as a reference for switching the displacement are each a value obtained by multiplying by -1 and making it negative.
[0020]
First, the device displays the numerical value to be adjusted on the display device 4. The numerical value displayed at this time may be an initial value read from the ROM 2 immediately after the apparatus is started, or a value obtained by storing some measured value or a previously adjusted numerical value in the RAM 3. It may be a numerical value.
The adjustment target value is an initial value immediately after the start of the adjustment and is constant (S11). The CPU 1 detects the speed of the rotary encoder 5 at regular intervals. For example, if the user rotates the knob of the rotary encoder 5 clockwise, the speed of the rotary encoder 5 changes from 0 to positive. If the speed is smaller than v1, the CPU 1 increases the value to be adjusted by 1 each time the speed is detected (S12). When displacing the adjustment target numerical value, the CPU 1 displays the resulting numerical value on the display device 4. When the user rotates the rotary encoder 5 even faster and the speed becomes equal to or higher than v1, the CPU 1 switches the unit amount of displacement from 1 to 10, and increases the value to be adjusted by 10 (S13). However, after this, even if the rotation speed of the rotary encoder 5 becomes lower than v1, as long as the rotation speed is positive, the displacement unit amount is kept at 10, and the target numerical value is increased by 10. This allows the user to increase the digit to be adjusted by one digit while lowering the speed of rotating the knob of the rotary encoder 5 after raising the digit, so that the digit can be more easily adjusted to a desired value. It becomes possible.
[0021]
When the display device 4 has a cursor display function or a graphic data superimposition display function, the CPU 1 simultaneously displays a cursor or a rectangle for highlighting at a digit position corresponding to a unit amount of displacement. It is desirable. As a result, the unit amount of displacement can be switched, and the digit position can be distinguished and highlighted, so that the user can more easily recognize the current unit amount of displacement.
[0022]
Further, when the user rotates the rotary encoder 5 faster and the speed becomes v2 or more, the CPU 1 switches the unit amount of displacement from 10 to 100, and increases the numerical value to be adjusted by 100 (S14). Similarly, even if the rotation speed of the rotary encoder 5 becomes lower than v2 thereafter, as long as the rotation speed is positive, the unit amount of displacement is kept at 100, and the target numerical value is increased by 100.
When the user rotates the rotary encoder 5 in a counterclockwise direction instead of a clockwise direction, the rotational speed used as a reference for switching the unit amount of displacement and the unit amount of displacement of the numerical value to be adjusted is a negative value instead of a positive value. And the same control is executed (S15, S16, S17).
[0023]
When the user stops the rotation of the rotary encoder 5, the CPU 1 stops changing the value to be adjusted and keeps it constant (S11). At this time, the CPU 1 does not stop the displacement immediately after detecting that the rotation speed has become 0, but continuously changes the rotation speed to 0 at least a plurality of times during the fixed time for detecting the rotation speed of the rotary encoder 5. , A transition is made to the constant state for the first time. While the rotation speed is 0, the unit amount of the displacement is maintained, but the displacement is not added to the numerical value to be adjusted. Accordingly, while maintaining the response of the numerical displacement to the rotation of the rotary encoder 5 at a relatively high speed, the unit amount of the displacement immediately returns to the minimum value unless the rotary encoder 5 is constantly rotated at a certain speed or more. The user can be released from the burden on the target. This also makes it possible to cope with the switching of the rotation direction described below.
[0024]
An operation in the case where the rotation direction is switched while the user is rotating the rotary encoder 5 will be described. It is assumed that the user is rotating the rotary encoder 5 clockwise and the unit amount of displacement is 10 (S13). Here, when the user switches the rotation direction of the rotary encoder 5 from the clockwise direction to the counterclockwise direction, the unit amount of the displacement is rotated clockwise instead of starting from −1 which is a negative value of the minimum unit. It is set to -10 which is a negative value of 10 which is a unit amount of displacement at the time (S13 → S16).
[0025]
Depending on the timing of switching the rotation direction of the rotary encoder 5, when the CPU 1 detects the rotation speed, the speed 0 may be detected while the rotation speed shifts from positive to negative, but as described in the previous paragraph. As described above, the CPU 1 does not return the displacement unit amount to the minimum value unless the rotation speed 0 is continuously detected at least a plurality of times. For this reason, if the user switches the rotation direction as usual, it is possible to increase or decrease the value to be adjusted while maintaining the same unit of displacement of the absolute value. The numerical value of the digit can be smoothly adjusted in both directions.
[0026]
If the value to be adjusted has an upper limit and a lower limit of the adjustable range, the CPU 1 corrects the adjustment result so that the value to be adjusted does not exceed the upper and lower limits. There are at least two alternatives to the fix. For example, assume that the current value of the adjustment target numerical value is 987, the upper limit value is 999, and the current unit amount of displacement is 100. Here, when the rotary encoder 5 is further rotated clockwise, if it is increased by 100, the numerical value to be adjusted exceeds its upper limit. Here, the first method is that if the value cannot be increased by 100, the numerical value to be adjusted is not changed and is kept at 987.
[0027]
The second method is to modify the upper limit if it exceeds the upper limit, that is, to displace 987 to 999. If there is a difference in length, and the user intends to change only the digit of 100 digit without changing the digit of 1 digit and 10 digit, the digit of unintended digit is not changed In this regard, the former method is considered to be superior. On the other hand, if the user rotates the rotary encoder 5 clockwise and the numerical value to be adjusted is not displaced even though the numerical value to be adjusted is still in the range where it can be increased, the user's feeling of use deteriorates. There is a fear that the latter method is superior in this respect. Which method is selected depends on the policy of the application implementing this numerical adjustment method.
[0028]
In this embodiment, the unit amount of displacement is three levels, but it is easy to increase this to four or more levels. In this case, the level of the rotation speed of the rotary encoder 5 used as a reference for switching the unit amount of displacement is also increased accordingly. Also, when the adjustment target value is not an integer but a real number, it can be easily dealt with by setting the minimum value of the unit amount of displacement to the finest digit required for adjustment, for example, 0.01. is there.
[0029]
Further, in the present embodiment, the unit amount of the displacement is always adopted as the displacement amount of the numerical value to be adjusted every fixed time for which the CPU 1 obtains the speed of the rotary encoder 5. This means that the rotational speed of the rotary encoder 5 is used only for switching the unit amount of displacement in a sense, and even if the user rotates the rotary encoder 5 at high speed, the number of digits currently being subjected to displacement is Does not mean that it can be changed quickly. This method is considered appropriate from the viewpoint of displacing the numerical value to be adjusted based on the explicit switching of the unit amount of displacement. However, when actually displacing while switching the unit amount of displacement, it is also possible to use a numerical value obtained by multiplying the unit amount of displacement in proportion to the rotation speed of the rotary encoder 5 for the displacement. . Some applications can be operated more efficiently if implemented in such a way.
[0030]
Further, in this embodiment, a digital display device is used as the display device, but an analog display device can be used. A general analog indicator may be used, or a logarithmic analog indicator may be used in an application in which the accuracy of the lower digit is not required as the value to be adjusted increases. Further, a configuration may be adopted in which analog indicators are installed independently of each other for the number of levels of the unit amount of displacement, and each time the unit amount of displacement is switched, the analog indicator whose display is directly changed in response to the operation is switched. .
[0031]
When a user first operates a device in which the numerical value adjustment method is implemented, the user does not intuitively grasp the levels of v1 and v2, so that it may take a little time to get used to the operation. However, as you get used to it, you will be able to make numerical adjustments faster.
[0032]
Hereinafter, details of the second embodiment will be described with reference to the accompanying drawings. Note that the electrical parts of the numerical value adjusting device are the same as those shown and described in the first embodiment, and thus description thereof will be omitted. The method of adjusting the numerical value is different from that of the first embodiment. FIG. 3 is a state transition diagram of numerical values to be adjusted in the embodiment.
A numerical value adjustment method in the present embodiment will be described in detail with reference to a state transition diagram of numerical values to be adjusted in FIG. Hereinafter, it is defined that the value is increased when the knob of the rotary encoder 5 is rotated clockwise (CW), and is decreased when the knob is rotated counterclockwise (CCW). Accordingly, the rotational speed of the rotary encoder 5 is set to be positive when rotated in the clockwise direction and negative when rotated in the counterclockwise direction, in accordance with the increase / decrease direction. Also, the unit amounts of the numerical displacement are 1, 10, and 100. The definitions so far are common to the first embodiment. Finally, the rotation speed of the rotary encoder 5 used as a reference for switching the unit amount of displacement is defined as v0. When the rotation direction is counterclockwise, the unit amount of the displacement and the rotation speed used as a reference for switching the displacement are each a value obtained by multiplying by -1 and making it negative.
[0033]
The adjustment target value is an initial value immediately after the start of the adjustment and is constant (S21). The CPU 1 detects the speed of the rotary encoder 5 at regular intervals. For example, if the user rotates the knob of the rotary encoder 5 clockwise, the speed of the rotary encoder 5 changes from 0 to positive. If the speed is smaller than v0, the CPU 1 increases the value to be adjusted by 1 each time the speed is detected (S22). When displacing the adjustment target numerical value, the CPU 1 displays the resulting numerical value on the display device 4. When the user rotates the rotary encoder 5 even faster and the speed becomes v0 or more, the CPU 1 switches the unit amount of displacement from 1 to 10, and increases the adjustment target value by 10 (S23). Thereafter, when the rotation speed of the rotary encoder 5 falls below v0, the unit amount of displacement is kept at 10 and the target numerical value is increased by 10 as long as the rotation speed is positive. This allows the user to increase the digit to be adjusted by one digit while lowering the speed of rotating the knob of the rotary encoder 5 after raising the digit, so that the digit can be more easily adjusted to a desired value. It becomes possible.
[0034]
Further, when the user continues to rotate the rotary encoder 5 without lowering the rotation speed thereof below v0, the CPU 1 detects the rotation speed of the rotary encoder 5 at least a plurality of times continuously and at least a plurality of times. The amount is switched from 10 to 100, and the value to be adjusted is increased by 100 (S24). Similarly, even when the rotation speed of the rotary encoder 5 becomes lower than v0, the unit amount of displacement is kept at 100 and the target numerical value is increased by 100 as long as the rotation speed is positive.
[0035]
According to the above-described control, when the user rotates the rotary encoder 5 at a rotation speed of v0 or more, the unit amount of the displacement of the adjustment target value is switched, and the user operates the rotary encoder 5 at a low speed below v0. When rotated, the value to be adjusted is displaced by the unit amount of the current displacement, and if it is rotated quickly for a short time to v0 or more and then returned to low speed, the value to be adjusted will be one unit larger than the displacement by one step If the displacement is performed and the speed is maintained at v0 or more, the unit amount of the displacement can be continuously increased. In this case, by adding a control not to displace the numerical value to be adjusted immediately after the CPU 1 switches the unit amount of displacement, it is possible to prevent a digit of an unexpected digit from being changed.
The control related to switching between positive and negative and stop is common to the first embodiment, and the description is omitted.
[0036]
In the present embodiment, a method is adopted in which the unit amount of displacement is continuously increased if the user maintains the rotation speed of the rotary encoder 5 at v0 or higher. However, separately from this, it is also easy to increase the displacement unit amount by one step, and then, unless the rotation speed once falls below v0 and becomes higher than v0 again, the unit amount of displacement is not further increased. Conceivable. When this method is adopted, increasing the rotation speed for a short time and then returning the rotation speed to the original position is an operation meaning an increase in the unit amount of displacement.
As in the first embodiment, when the user first operates the device on which the numerical value adjustment method is implemented, the user may not be able to intuitively grasp the level of v0, so that it may take a little time to get used to it. There is. However, as you get used to it, you will be able to make numerical adjustments faster.
[0037]
Hereinafter, details of the third embodiment will be described with reference to the accompanying drawings. FIG. 4 is an electrical block diagram of a numerical value adjusting device described in the following embodiment. However, only the configuration necessary to explain the numerical adjustment method according to the present invention has been described. FIG. 5 is a state transition diagram of numerical values to be adjusted in the present embodiment.
[0038]
In FIG. 4, a CPU 1 is a central processing unit and executes calculation processing. The ROM 2 is a read-only non-volatile memory, and incorporates programs executed by the CPU 1 and initial values of data. The RAM 3 is a readable and writable random access memory, and is used as a work area when the CPU 1 executes a program. The CPU 1 is connected to the ROM 2, the RAM 3, and the display device 4 via an input / output port or a bus. Further, the CPU 1 has a built-in A / D (analog-digital conversion) function unit and is connected to the joystick 6 via an A / D input port. Further, the CPU 1 has a built-in timer and can measure time. The CPU1, ROM2, RAM3, A / D converter, and timer modules may be enclosed in a single package, and a one-chip computer having input / output ports or bus terminals may be used. The above-mentioned connection or a connection of a plurality of substrates with a cable or the like may be used.
[0039]
The display device 4 has at least a function of displaying a numerical value to be adjusted. Here, a digital display device that displays a numerical value as characters in a plurality of digits is used. Specifically, for example, a character liquid crystal display device capable of displaying numbers and, if necessary, a decimal point symbol and a negative sign, and displaying the required number of digits, and a dot number capable of displaying the required number of digits and symbols, etc. A graphic liquid crystal display device or a device in which 7-segment LED display members are arranged in required digits can be used.
[0040]
The joystick 6 allows the user to tilt the stick in a predetermined direction, and outputs information indicating in which direction the stick has been tilted and how much. Here, a one-axis joystick 6 using a potentiometer is used, but one axis may be assigned to numerical adjustment using a two-axis joystick, or a stick using a rotary encoder for tilt detection of the stick, or a stick may be used. A system in which the stick is fixed and the force applied to the stick is detected by a pressure sensor without a rotating shaft may be used. The joystick 6 has a rotation axis set at the base of the stick, and uses a spring to automatically return the stick to a predetermined center position when no force is applied to the stick. The user can incline the stick to some extent from the center position in the two reverse directions in which the rotation axis rotates.
[0041]
Further, a potentiometer is attached to the rotating shaft. The potentiometer is an electronic component that converts a rotation angle into a voltage, and the joystick 6 outputs this voltage. The voltage output from the joystick 6 is, for example, 0 V when the stick is in the center position, and two directions in which the stick can be tilted correspond to positive and negative voltages, and the larger the tilt, the larger the voltage output. Alternatively, the output voltage may be 0 to 5 V, and 2.5 V at the center may correspond to the state where the stick is at the center position.
[0042]
The CPU 1 inputs the voltage output from the joystick 6 from an A / D input port, converts the input voltage to a digital value by A / D conversion, and then converts the input voltage to an angle based on the specification of the joystick 6 by tilting the stick. Convert to The CPU 1 measures, for example, a fixed time interval of several tens to several hundreds ms by a built-in timer, measures and calculates the output voltage of the joystick 6 at each fixed time, thereby tilting the joystick 6 at that time. The direction and its inclination angle can be determined.
[0043]
Next, a numerical value adjustment method using the joystick 6 will be described in detail with reference to a state transition diagram of numerical values to be adjusted in FIG. In the following, it is assumed that the joystick 6 is installed so that it can be tilted left and right, and that the value is increased when the joystick 6 is tilted to the right and decreased when the stick is tilted to the left. Accordingly, the tilt angle of the joystick 6 is set to be positive when tilted to the right and negative when tilted to the left, in accordance with the increase / decrease direction. Also, the unit amounts of the numerical displacement are 1, 10, and 100.
[0044]
Further, the inclination angles of the joystick 6 used as a reference for switching the unit amount of displacement are defined as θ1 and θ2. The unit amount of the displacement and the inclination angle used as a reference for switching the displacement use a value obtained by multiplying by −1 and negative when tilted to the left.
First, the device displays the numerical value to be adjusted on the display device 4. The numerical value displayed at this time may be an initial value read from the ROM 2 immediately after the device is started, or a value obtained by storing some measured value or a previously adjusted numerical value in the RAM 3. It may be the read value.
[0045]
The numerical value to be adjusted is an initial value immediately after the start of the adjustment and is constant (S31). The CPU 1 detects the inclination angle of the joystick 6 at regular intervals. For example, when the user tilts the joystick 6 to the right, the tilt angle output by the joystick 6 changes from 0 to positive. If the inclination angle is smaller than θ1, the CPU 1 increases the adjustment target value by 1 each time the inclination angle is detected (S32). When displacing the adjustment target numerical value, the CPU 1 displays the resulting numerical value on the display device 4. When the user tilts the joystick 6 further and the tilt angle becomes equal to or more than θ1, the CPU 1 switches the unit amount of displacement from 1 to 10, and increases the adjustment target value by 10 (S33). However, after this, even if the inclination angle of the joystick 6 falls below θ1, as long as the inclination angle is positive, the unit amount of displacement is kept at 10, and the target numerical value is increased by 10.
[0046]
Further, when the user tilts the joystick 6 more greatly and the tilt angle becomes equal to or more than θ2, the CPU 1 switches the unit amount of displacement from 10 to 100, and increases the numerical value to be adjusted by 100 (S34). Similarly, even if the tilt angle of the joystick 6 becomes smaller than θ2, the unit amount of displacement is kept at 100 and the target numerical value is increased by 100 as long as the tilt angle is positive.
[0047]
When the user tilts the joystick 6 to the left instead of to the right, the unit amount of displacement of the numerical value to be adjusted and the inclination angle used as a reference for switching the unit amount of displacement are evaluated as negative values instead of positive values, respectively. The control is executed (S35, S36, S37).
When the user returns the inclination of the joystick 6 to the center, or when the user releases the stick and the stick automatically returns to the center position, the CPU 1 stops displacing the numerical value to be adjusted and keeps it constant ( S31). At this time, the CPU 1 does not stop the displacement immediately after detecting that the tilt angle has reached the center position, but continuously adjusts the tilt angle to the central position at least a plurality of times during a predetermined time for detecting the tilt angle of the joystick 6. When it is at the position, it shifts to the constant state for the first time. While the tilt angle is at the center position, the unit amount of the displacement is held, but the displacement is not added to the numerical value to be adjusted. This makes it possible to cope with the switching of the tilt direction described below.
[0048]
An operation in the case where the user does not tilt the joystick 6 from the center position, but switches the tilt from one state to another direction in a different direction will be described. It is assumed that the user is now tilting the joystick 6 to the right and the unit amount of displacement is 10 (S33). Here, when the user switches the tilt direction of the joystick 6 from right to left, the unit amount of displacement does not start from a negative value of −1, which is the minimum value of the minimum unit, but the unit amount of displacement when tilted to the right. Is set to -10 which is a negative value of 10 (S33 → S36).
[0049]
Depending on the timing of switching the tilt direction of the joystick 6, when the CPU 1 detects the tilt angle, the center position may be detected while the tilt angle shifts from right to left, but as described in the previous paragraph. In addition, the CPU 1 does not return the displacement unit amount to the minimum value unless the center position is detected at least a plurality of times continuously. For this reason, if the user switches the tilt direction with a very ordinary feeling, the value to be adjusted can be increased or decreased while maintaining the same unit of displacement of the absolute value. The numerical value of the digit can be smoothly adjusted in both directions.
[0050]
The description of how to deal with the case where the adjustment target numerical value has an upper limit and a lower limit of the adjustable range, and the description regarding the number of levels of the unit amount of displacement and the phenotype of the adjustment target numerical value are the same as in the first embodiment, and will not be described.
In the present embodiment, the unit amount of the displacement is always adopted as the displacement amount of the adjustment target numerical value at every fixed time for which the CPU 1 calculates the inclination angle of the joystick 6. This means that the tilt angle of the joystick 6 is used only for switching the unit amount of displacement in a sense, and no matter how much the user tilts the joystick 6, the digit of the digit to be currently displaced is fast. Means that it cannot be changed. This method is considered appropriate from the viewpoint of displacing the numerical value to be adjusted based on the explicit switching of the unit amount of displacement. However, when actually displacing while switching the unit amount of displacement, it is also possible to use a numerical value obtained by multiplying the unit amount of displacement in proportion to the inclination angle of the joystick 6 for the displacement. Some applications can be operated more efficiently if implemented in such a way.
[0051]
When a user first operates a device in which this numerical adjustment method is implemented, since the user does not intuitively grasp the levels of θ1 and θ2, it may take a little time to get used to it. However, as you get used to it, you will be able to make numerical adjustments faster.
[0052]
【The invention's effect】
The numerical value adjustment method according to the present invention includes a display unit that displays the numerical value to be adjusted as a digital numerical value or an analog numerical value, an input unit that inputs a change direction and a change amount, and the input numerical value and the input change amount and the input change amount. Conversion means for converting the displacement into a positive or negative value according to the input increase / decrease direction. If the input change amount exceeds a predetermined value, the unit amount of the displacement is increased, and if a state in which the input change amount can be regarded as 0 continues for a predetermined period, the unit amount of the displacement is set to a minimum value. However, when the input increase / decrease direction is switched, since the unit amount of the displacement is held, the user adjusts the numerical value to a value that is significantly different from the currently specified numerical value. It can be carried out rate manner.
[Brief description of the drawings]
FIG. 1 is an electrical block diagram of an apparatus according to an embodiment.
FIG. 2 is a state transition diagram of adjustment target numerical values.
FIG. 3 is a state transition diagram of adjustment target numerical values.
FIG. 4 is an electrical block diagram of the device of the embodiment.
FIG. 5 is a state transition diagram of adjustment target numerical values.
[Explanation of symbols]
1 CPU
2 ROM
3 RAM
4 Display device
5 Rotary encoder
6 Joystick

Claims (3)

A method for adjusting a displayed numerical value, a display means for displaying a numerical value to be adjusted as a digital numerical value or an analog numerical value, an input means for inputting an increase / decrease direction and a change amount, and the input increase / decrease direction and the input Conversion means for converting the amount of change into the amount of displacement of the numerical value to be adjusted, wherein the conversion means determines whether the product of the unit amount of displacement or the input change amount and the unit amount of displacement is positive or negative according to the input increase / decrease direction. What is done is a displacement amount, and when the input change amount exceeds a predetermined value, the unit amount of the displacement is increased, and when the state in which the input change amount can be regarded as 0 continues for a predetermined period, the displacement amount is calculated. A numerical value adjusting method comprising: setting a unit amount to a minimum value; and holding the unit amount of the displacement when the input increase / decrease direction is switched. 2. The numerical value adjustment method according to claim 1, wherein said input means is a rotary encoder, said input increase / decrease direction is a rotation direction of said rotary encoder, and said input change amount is a rotation speed of said rotary encoder. 2. The numerical value adjustment method according to claim 1, wherein the input means is a joystick, the input increase / decrease direction is an operation direction on the joystick, and the input change amount is a magnitude of the operation on the joystick.

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