JP2015106276A - Control parameter selection device for master unit, control parameter selection method of master unit, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust sensitivity of a detection part of a display device capable of performing non-touch input in accordance with a next user manipulation operation.SOLUTION: A control parameter selection device for a master unit is configured to select an operation item and a manipulated variable of the master unit and includes: electrodes which are disposed while interposing a display area therebetween; an electrostatic capacitance detection part 310 for detecting electrostatic capacitance corresponding to a mutual distance between the electrode and a body to be detected; a detection control part 330 for predicting a manipulation operation of the body to be detected on the basis of at least either display contents of an operation item and a manipulation parameter, and adjusting the electrostatic capacitance to be defined as a threshold value for detecting the approach of the body to be detected, in accordance with whether the body to be detected approaches the electrode in the predicted manipulating operation; and an approach detection part 340 for detecting the approach of the body to be detected when the detected electrostatic capacitance exceeds the threshold value adjusted by the detection control part 330.

Description

  The present invention relates to a control parameter selection device for a main device, a control parameter selection method for the main device, and a program that enable selection of control parameters for the main device by non-contact operation.

  2. Description of the Related Art Conventionally, display devices used for various in-vehicle devices such as car navigation and car audio are provided with a touch panel for receiving operation inputs for these in-vehicle devices. The touch panel of the display device is provided in front of the display that displays the display screen. Among the operation areas set on the touch panel, an operation area corresponding to the operation switch displayed as a part of the display screen of the display is provided. By touching, a driver or a passenger can perform an operation input.

  However, when the driver performs an operation input, the driver must look away from the front of the vehicle and visually touch the operation area displayed on the touch panel, which is dangerous. Therefore, by applying a non-contact input technique (for example, see Patent Documents 1 and 2) using an infrared method, a capacitance change detection method, or the like to the display device, it is possible to input by a gesture, and the driver can operate the operation switch. It is conceivable that an operation input can be performed without visually recognizing the operation area corresponding to.

JP 11-259260 A JP 2012-3554 A

  However, when a display device capable of non-contact input by an infrared method, a capacitance change detection method, or the like has a plurality of detection units, a deviation from an original operation of a gesture input part such as a hand or a finger or a gesture A detection unit that should not react may react due to an accessory such as a ring or a watch that is not an input part. As a result, there is a problem that an input different from the intention of the operator is made.

  For example, when a display device capable of non-contact input using a capacitance method has four electrodes serving as detection units arranged in a cross direction, gesture input can be performed vertically, horizontally, and rotated. Therefore, when the hand is moved to the left or right on the display device, the hand is not necessarily moved horizontally, and may be moved to the left or right diagonally or diagonally upward or slightly curved. In that case, the lower and upper electrodes also react, and the gesture input may be misjudged as rotation instead of left and right.

  Therefore, in view of the above problems, the present invention provides a control parameter selection device for a main device that adjusts the sensitivity of a detection unit of a display device capable of non-contact input according to an operator's next operation operation. It is an object to provide a control parameter selection method and program.

  The present invention proposes the following matters in order to solve the above problems.

  (1) The present invention is a control parameter selection device for a main device for selecting an operation item and an operation amount of the main device, and includes an electrode arranged across a display region, the electrode, and an object to be detected. Capacitance detecting means for detecting the capacitance according to the mutual distance of the detected object, the display contents of the operation item and the operation parameter, or the operation history of the detected object based on at least one of the detected operation history of the detected object. An operation operation is predicted, and the capacitance of the electrode as a threshold for detecting the approach of the detected object is adjusted according to whether or not the detected object approaches in the predicted operation operation. And a detection unit that detects the approach of the detected object when the detected capacitance exceeds a threshold adjusted by the detection control unit. Control parameter selection device It is draft.

  ADVANTAGE OF THE INVENTION According to this invention, an operator's operation action can be detected correctly and it can prevent that the input different from a user's intention will be performed.

  (2) The present invention relates to the control parameter selection device of the main device of (1), wherein the detection control means detects the approach of the detected object with respect to the electrode that the detected object approaches in the predicted operation operation. There has been proposed a control parameter selection device for a main device, characterized in that the capacitance used as a threshold for detection is lower than a predetermined threshold.

  (3) The present invention relates to the control parameter selection device of the main device of (1), wherein the detection control means moves the detected object closer to the electrode that the detected object does not approach in the predicted operation operation. There has been proposed a control parameter selection device for a main device, characterized in that a capacitance as a threshold for detection is set higher than a predetermined threshold.

  (4) According to the present invention, in the control parameter selection device of the main device of (1) to (3), the main device is an in-vehicle device such as an air conditioner, an audio device, a navigation device, etc. A parameter selection device is proposed.

  (5) The present invention relates to a control parameter selection method in a control parameter selection device of a main device for selecting an operation item and an operation amount of the main device, the electrodes arranged across a display region, and the electrodes A capacitance detection means for detecting a capacitance according to the mutual distance between the detection object and the detected object, a detection control means, and a detection means, wherein the detection control means displays the operation items and operation parameters. A first step of predicting an operation operation of the detected object based on at least one of contents or an operation operation history of the detection object; and the detection control means predicting the electrode in the first step. A second step of adjusting a capacitance serving as a threshold for detecting the approach of the detected object according to whether or not the detected object approaches in the operated operation, and the detection means, The detection And a third step of detecting the approach of the detected object when the measured capacitance exceeds the threshold value adjusted in the second step. Has proposed.

  (6) The present invention is a program for causing a computer to execute a control parameter selection method in a control parameter selection device of a main device for selecting an operation item and an operation amount of the main device, and sandwiching a display area, A capacitance detecting unit that detects a capacitance according to a mutual distance between the electrode and the detection target, a detection control unit, and a detection unit, and the detection control unit includes: A first step of predicting an operation operation of the detected object based on at least one of display contents of the operation item and operation parameter or an operation operation history of the detection object; and the detection control means for the electrode The electrostatic capacity as a threshold for detecting the approach of the detected object is adjusted according to whether or not the detected object approaches in the operation operation predicted in the first step. A second step, and a third step in which the detection means detects the approach of the detected object when the detected capacitance exceeds the threshold adjusted in the second step. Proposes a program to be executed by a computer.

  According to the present invention, the sensitivity of the detection unit of the display device capable of non-contact input is adjusted according to the predicted next operation operation of the operator, so that the operation operation of the operator can be detected correctly. It is possible to prevent an input different from the intention of the operator from being made.

It is a figure which shows schematic structure of the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is a figure which shows the electrical structure of the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is the figure which showed the example of a display of the display panel in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is a figure which shows the detection principle of the proximity | contact state of a to-be-detected body in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is a figure which shows the detection principle of the proximity | contact state of a to-be-detected body in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is a figure which shows the detection principle of the proximity | contact state of a to-be-detected body in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is a figure which shows the detection principle of the proximity | contact state of a to-be-detected body in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is the figure which showed the input by the up-down operation action in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is the figure which showed the input by circular operation operation | movement in the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention. It is the figure which showed the process of the control parameter selection apparatus of the main apparatus which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the constituent elements in the present embodiment can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the description of the present embodiment does not limit the contents of the invention described in the claims.

<Embodiment>
Embodiments of the present invention will be described with reference to FIGS.

<Schematic configuration of main device control parameter selection device>
As shown in FIG. 1, the control parameter selection device of the main device according to the present embodiment mainly includes electrodes 110 </ b> X, 120 </ b> X, 110 </ b> Y, 120 </ b> Y and a display panel (display area) 200.

  The electrodes 110X, 120X, 110Y, and 120Y are disposed on the outer periphery of the display panel (display region) 200, and the electrodes 110X and 120X are provided on the upper and lower portions of the outer periphery of the display panel (display region) 200 in the X-axis direction. The electrodes 110 </ b> Y and 120 </ b> Y are provided at the upper and lower portions in the Y-axis direction on the outer periphery of the display panel (display region) 200.

  The electrodes 110X, 120X, 110Y, and 120Y are used, for example, in a method for detecting the proximity state of a detection object such as an operator's hand or finger based on a change in capacitance, and particularly called a self-capacitance method. It is an electrode used in the method. The detection method will be described later.

  The display panel 200 is preferably a flat panel such as an LCD (Liquid Crystal Display), for example. In this embodiment, operation items such as an air conditioner, an audio device, a navigation device, and operation parameters thereof (if an air conditioner, a temperature is used). In the case of audio equipment, such as CD, DVD, FM, AM, volume, equalizer, etc., in the case of navigation equipment, addresses, telephone numbers, history information, etc.) are displayed in a matrix.

<Electrical configuration of main device control parameter selection device>
As shown in FIG. 2, it includes a capacitance detection unit 310, a threshold storage unit 320, a detection control unit 330, a proximity detection unit 340, a control unit 350, and a display control unit 360.

  The capacitance detection unit 310 detects the amount of change (increase) in the capacitance of each electrode 110X, 120X, 110Y, 120Y.

  The threshold storage unit 320 stores a threshold used by the proximity detection unit 340 to detect the proximity state of the detection target. The threshold storage unit 320 has a normal sensitivity threshold (hereinafter referred to as a normal sensitivity threshold) by which the proximity detection unit 340 detects the proximity state of the detection target, and a sensitivity at which the proximity detection unit 340 detects the proximity state of the detection target. A threshold value to be increased (hereinafter, referred to as a high sensitivity threshold value) and a threshold value to be used to decrease the sensitivity with which the proximity detection unit 340 detects the proximity state of the detection target (hereinafter referred to as a low sensitivity threshold value) are stored. Here, the high sensitivity threshold is smaller than the normal sensitivity threshold, while the low sensitivity threshold is larger than the normal sensitivity threshold. Note that the normal sensitivity threshold, the high sensitivity threshold, and the low sensitivity threshold are referred to as thresholds when they are not distinguished.

  The threshold storage unit 320 is not limited to the normal sensitivity threshold, the high sensitivity threshold, and the low sensitivity threshold, and may store a plurality of thresholds. Since the threshold storage unit 320 stores a plurality of thresholds, the sensitivity with which the proximity detection unit 340 detects the proximity state of the detection target can be finely changed.

  The detection control unit 330 predicts at least one of the electrodes that the detection target approaches or does not approach in the operation operation of the operator. And the detection control part 330 performs control which raises the sensitivity which the proximity detection part 340 detects the proximity | contact state of a to-be-detected body about the electrode estimated to approach. In addition, the detection control unit 330 performs control to lower the sensitivity with which the proximity detection unit 340 detects the proximity state of the detection target for electrodes that are predicted not to approach.

  As a result, it is possible to correctly detect the operation operation of the operator, and to prevent an input different from the intention of the operator from being made. In addition, the detection control unit 330 can set the sensitivity at which the proximity detection unit 340 detects the proximity state of the detection object for all electrodes to 0, and can also be used in combination with the touch panel of the display device. It becomes.

  Specifically, the detection control unit 330 detects the amount of change (increase) in the electrostatic capacity detection unit 310 by the operator's operation operation. Predict at least one of the electrodes that the detection body approaches or does not approach. The detection control unit 330 sets the high sensitivity threshold value stored in the threshold value storage unit 320 for the electrode predicted to be detected by the operator in the operation operation of the operator, and sets the detection object in the operation operation of the operator. For the electrodes predicted not to be transmitted, the normal sensitivity threshold value or the low sensitivity threshold value stored in the threshold value storage unit 320 is transmitted to the proximity detection unit 340.

  In addition, the detection control unit 330 sets the low sensitivity threshold stored in the threshold storage unit 320 for the electrode predicted that the detection target does not approach in the operation operation of the operator, and sets the detection target in the operation operation of the operator. For the electrode predicted to approach, the normal sensitivity threshold or the high sensitivity threshold stored in the threshold storage unit 320 may be transmitted to the proximity detection unit 340. The detection control unit 330 performs the above-described processing after the operator's previous operation operation and before the capacitance detection unit 310 detects the change amount (increase amount) of the capacitance by the operator's next operation operation. You may go.

  For example, if the electrodes 110X and 120X are electrodes that the detection control unit 330 predicts that the detection target approaches in the operation operation of the operator, the high sensitivity stored in the threshold storage unit 320 for the electrodes 110X and 120X. The threshold is transmitted to the proximity detector 340. On the other hand, the normal sensitivity threshold value or the low sensitivity threshold value stored in the threshold value storage unit 320 is transmitted to the proximity detection unit 340 for the electrodes 110 </ b> Y and 120 </ b> Y that are predicted not to approach the detection target.

  The detection control unit 330 detects the electrode that the detected object approaches or does not approach in the operation operation of the operator according to the operation operation history of the detected object and the content displayed on the display panel (display area) 200. Predict.

  For example, when the detected object is in the proximity of the detected object by the pre-operation operation in which the detected object moves up and down on the display panel (display area) 200, the detected object is displayed as the next operation operation. The next operation operation depending on which electrode the previous operation operation has detected, such as an operation of moving left and right on the panel (display area) 200 and predicting that the detection target approaches the electrodes 110Y and 120Y. There is a method for predicting an electrode for detecting the. In this case, a rule that associates the electrode that detected the previous operation with the electrode that detects the next operation is set in advance, and based on the set operation, the electrode detected by the previous operation is detected. Thus, an electrode for detecting the next operation operation is predicted.

  A rule that associates the electrode that has detected the previous operation and the electrode that detects the next operation may be arbitrarily determined or may be determined from the operation history of the detected object. When determining from the operation motion history of the object to be detected, in the operation motion history, for each combination of electrodes that detected the previous operation motion, the combination of the electrode that detected the previous operation motion and the electrode that detected the next operation motion A large number or the most recent combination of the electrode that has detected the previous operation and the electrode that has detected the next operation is set as a rule.

  In addition, there is a method for predicting the electrode that the detection target approaches in accordance with the display content displayed on the display panel (display area) 200. For example, from the function unit that controls the display contents of the display panel (display area) 200 of the main apparatus, first, the arrangement of operation items and operation parameters is acquired as the display contents. When the acquired arrangement is in the vertical direction, the electrodes that the detection target approaches are predicted to be the upper and lower electrodes 110 </ b> X and 120 </ b> X in the X-axis direction on the outer periphery of the display panel (display area) 200. On the other hand, when the obtained arrangement is in the horizontal direction, the electrodes that the detection target approaches are predicted to be the upper and lower electrodes 110Y and 120Y in the Y-axis direction on the outer periphery of the display panel (display region) 200.

  For example, the proximity detection unit 340 detects the proximity state by comparing the change amount (increase amount) of the capacitance detected by the capacitance detection unit 310 with the threshold value received from the detection control unit 330 for each electrode. To do. For example, the proximity value is detected by converting the capacitance value into a voltage value and comparing the two in the form of voltage.

  The control unit 350 outputs a signal for changing the display to the display control unit 360 based on the output signal from the proximity detection unit 340 as to whether or not the proximity state for each electrode has been detected. The display control unit 360 The display of the display panel 200 is controlled based on the input control signal.

  A specific control process of the control unit 350 will be described with reference to FIG. 3 showing a display example of the display panel 200 of the control parameter selection device of the main device according to the present embodiment.

  In FIG. 3, operation items such as NAVI, AIR CON, AUDIO, PC, and PHONE are displayed in the top line. The following lines display operation parameters, for example, volume display of VOL16, VOL17, VOL18, VOL19, VOL20, etc., PC functions such as AUX, USB, and AUDIO functions such as CD / DVD, FM, AM, etc. Yes. In addition, functions related to NAVI such as temperature display such as 25.5 ° C, 26.0 ° C, 26.5 ° C, 27.0 ° C, 27.5 ° C, TEL, address, history, registration point, and landmark are displayed. ing.

  Specifically, when the operation items such as an air conditioner, an audio device, a navigation device, and the operation parameters thereof are displayed in a matrix form on the display panel 200, for example, the proximity detection unit 340 is in a proximity state to the electrode 110Y. When the proximity state to the electrode 120Y is detected after the detection, the control unit 350 determines that the operation item selection mode such as an air conditioner, an audio device, and a navigation device is selected, and the proximity detection unit 340 approaches the electrode 110Y. After detecting the state, every time the proximity state to the electrode 120Y is detected, a control signal is output to the display control unit 360 so that the operation items are scrolled frame by frame, and the display on the display panel 200 is changed.

  In FIG. 3, for example, when the proximity detection unit 340 detects the proximity state to the electrode 120 </ b> X and then detects the proximity state to the electrode 110 </ b> X, the control unit 350 determines that the mode is the operation item and operation parameter selection mode. After the proximity detection unit 340 detects the proximity state to the electrode 120X, each time the proximity detection unit 340 detects the proximity state to the electrode 110X, a control signal is sent to the display control unit 360 so that the top row is scrolled one line at a time. Output, and transition the display of the display panel 200.

  In addition, when the proximity detection unit 340 detects the proximity state to the electrode 120Y after detecting the proximity state to the electrode 110Y, it is a selection mode such as the operation item displayed in the top row, NAVI, AIR CON, etc. The control unit 350 determines that the display control is performed so that each time the proximity detection unit 340 detects the proximity state to the electrode 110Y and detects the proximity state to the electrode 120Y, the operation items are scrolled frame by frame. A control signal is output to the unit 360, and the display on the display panel 200 is changed.

<Principle of detection of proximity condition of detected object in control parameter selection device of main device>
The principle of detection of the proximity state of the detected object in the control parameter selection device of the main device according to the present embodiment will be described with reference to FIGS.

  As described above, in the self-capacitance method used in this embodiment, an electrode having a stray capacitance is used. The stray capacitance is affected by the parasitic capacitance between the electrode and the surrounding conductor. Since the human body is also a conductor, the value of the stray capacitance increases when a finger (human body) approaches the electrode (see FIG. 4). That is, in the self-capacitance method, the proximity state of the detection target is detected by detecting the capacitance value that increases as the finger (human body) approaches the electrode.

  An example of a method for detecting the proximity state of the detection target will be described with reference to FIGS. 5 and 6.

  FIG. 5 shows an example of the detection circuit. As shown in this figure, the detection circuit includes a capacitor Cc, a measurement capacitor Cx, a comparison capacitor Cr, a resistor Rc, switches SW1, SW2, and SW3, and a comparator.

  The measurement capacitor Cx has one end grounded and the other end connected to one end of the comparison capacitor Cr and the comparison input terminal of the comparator via an electrode. A switch SW1 is provided between the comparison input terminal of the comparator and the ground.

  One end of the capacitor Cc is grounded, the other end is connected to one end of the resistor Rc, and the other end of the resistor Rc is connected to a comparison capacitor Cr and a connection point between the switches SW1 and SW2. The other end of the switch SW1 is connected to the power supply voltage Vcc, and the other end of the switch SW2 is grounded. Further, Vref is connected to the reference voltage terminal of the comparator. Here, the voltage across the capacitor Cc is Vc, the voltage across the measurement capacitor Cx is Vx, and the voltage across the comparison capacitor Cr is Vr.

  In this method, the capacitance of the electrode measurement capacitance Cx is measured as follows. That is, electric charge accumulates in the capacitor Cc and gradually discharges through the resistor Rc. The electric charge of the capacitor Cc moves to the comparison capacitor Cr and the measurement capacitor Cx. Therefore, the capacitance of the electrode measurement capacitance Cx is measured by detecting the voltage divided by the comparison capacitor Cr and the capacitor Cc.

  The detailed measurement method is as follows: 1) The switch SW1 is turned on and electric charge is accumulated in the capacitor Cc. At this time, the switches SW2 and SW3 are in the OFF state. 2) All the switches SW1, SW2, and SW3 are turned off to maintain the charge of the capacitor Cc. 3) Turn on the switches SW2 and SW3 for a predetermined time. Then, while all the charges of the measurement capacitor Cx and the comparison capacitor Cr are discharged, a part of the charge of the capacitor Cc is discharged through the resistor Rc. 4) Turn all the switches SW1, SW2, and SW3 to OFF. At this time, the electric charge of the capacitor Cc moves to the measurement capacitor Cx and the comparison capacitor Cr. 5) The voltage (Vx) of the measurement capacitor Cx is compared with Vref by a comparator.

  The equivalent circuit of 4) and 5) is shown in FIG. Here, since the comparison capacitor Cr, the measurement capacitor Cx, the voltage of the capacitor Cc, Vr, Vx, and Vc must be equal, the charge of the capacitor Cc is dispersed in the measurement capacitor Cx and the comparison capacitor Cr.

  The relationship between the voltages Vr, Vx, and Vc and the capacities of the comparison capacitor Cr, the measurement capacitor Cx, and the capacitor Cc is expressed by the following equations 1 to 3.

  The above 3), 4) and 5) are carried out until the condition of Vx <Vref is satisfied. Here, as shown in Equation 3, when the capacitance Cx is increased, the number of discharge cycles until the condition of Vx <Vref is satisfied is reduced as shown in FIG. Therefore, the proximity state can be detected by counting the number of discharge cycles.

  Accordingly, when the proximity state of the detection target is detected in the electrode 120Y after the proximity state of the detection target is detected in the electrode 110Y, it is determined that the detection target has moved left and right, and the detection target is detected in the electrode 110X. After detecting the proximity state of the detection body, when the proximity state of the detection body is detected at the electrode 120X, it is determined that the detection body has moved up and down. For example, when the proximity state of the detection object is detected in the order of the electrode 110Y, the electrode 110X, the electrode 120Y, the electrode 120X, and the electrode 110Y, it is determined that the detection object has moved in a circular shape clockwise. When the proximity state of the detection object is detected in the order of 110Y, the electrode 120X, the electrode 120Y, the electrode 110X, and the electrode 110Y, it is determined that the detection object has moved clockwise in a circular shape. In addition, an upper semicircle and a lower semicircle can be identified.

<Input form in control parameter selection device of main device>
The input form in the control parameter selection apparatus of the main apparatus according to the present embodiment will be described with reference to FIGS.

  As illustrated in FIG. 8, for example, when the detection control unit 330 predicts the electrodes 110X and 120X as the electrodes that the detection target approaches in the operation operation of the operator, the electrodes 110X and 120X detect the detection target. Sensitivity to detect is higher than that of the electrodes 110Y and 120Y, and the proximity state is easily detected. As a result, even if the operator cannot move his / her hand vertically and moves his / her hand up and down slightly to the right or left, the electrode 110Y and the electrode 120Y maintain the proximity state of the detected object. Without detection, the electrodes 110X and 120X can detect the proximity state of the detection target. As a result, even if the operator moves his / her hand up or down slightly to the right or left, the same input as when moving his / her hand vertically / vertically is possible, and the operator's operation is detected correctly and the operation is performed. It is possible to prevent an input different from the intention of the person from being made.

  Similarly, when the detection control unit 330 predicts the electrodes 110Y and 120Y as the electrodes that the detection target approaches in the operation operation of the operator, the sensitivity that the electrodes 110Y and 120Y detect the detection target is the electrodes 110X and 120X. It is higher than the above, and it is easy to detect the proximity state. As a result, even when the operator moves his / her hand to the right or left while moving downward or to the right, the electrode 110X or the electrode 120X does not detect the proximity state of the detected object, and the electrodes 110Y and 120Y are not connected to the detected object. Detecting the proximity state, the same input as when moving your hand vertically and horizontally can be performed, and the operator's operation movement can be detected correctly to prevent an input different from the operator's intention from being made it can.

  Also, as shown in FIG. 9, for example, when the user moves the hand to the right in a circular shape and returns to the original position, when the selected operation parameter is confirmed, the detection control unit 330 operates the operator's operation. The electrodes 110X, 120X, and 120Y are predicted as the electrodes that the detection target approaches in the operation, and the sensitivity that the electrodes 110X, 120X, and 120Y detect the detection target is higher than that of the electrodes 110Y, and the proximity state is easily detected. It has become. Therefore, even when the operator's hand moves to the right in a circular shape and does not return to the original position and stops at the left position, the electrode 110Y does not detect the proximity state of the detection target, and the electrode 110X , 120X, 120Y can detect the proximity state of the detection target. As a result, even when the operator finally stops at the left position, the same input as when the operator stopped at the original position can be performed, and the operation operation of the operator is correctly detected, which is different from the operator's intention. It is possible to prevent an input from being made.

<Processing of control parameter selection device of main device>
The processing of the control parameter selection device of the main device according to the present embodiment will be described using FIG.

  First, the detection control unit 330 predicts at least one of the electrodes that the detection target approaches or does not approach by the operation of the operator (step S110). Next, the detection control unit 330 has a sensitivity with which the proximity detection unit 340 detects the proximity state of the detection target for each of the electrodes predicted to approach the detection target in step S110 and the electrodes predicted not to approach. Then, one of the normal threshold value, the high threshold value, and the low threshold value is acquired from the threshold storage unit 320 so that the approach of the detection body is higher than that of the electrode that is not predicted to approach (step S120).

  Next, the proximity detection unit 340 compares the change amount (increase amount) of the capacitance detected by the capacitance detection unit 310 with the threshold value received from the detection control unit 330 for each electrode (step S130). Next, the proximity detection unit 340 determines whether or not the amount of change (increase) in capacitance detected by the capacitance detection unit 310 is greater than the threshold received from the detection control unit 330 (step S140). If it is determined that the amount of change (increase) in capacitance is greater than the threshold (YES), the process proceeds to step S150, while the amount of change (increase) in capacitance is less than the threshold. If it is determined (NO), the process proceeds to step S160.

  Next, the proximity detector 340 detects the approach of the detection target (step S150). Next, the proximity detection unit 340 determines whether or not the change amount (increase amount) of the capacitance detected by the capacitance detection unit 310 is compared with the threshold value received from the detection control unit 330 for all electrodes. (Step S160). If all the electrodes are compared, the process proceeds to step S170. On the other hand, if all the electrodes are not compared, the process returns to step S140.

  Next, the control unit 350 outputs a signal for changing the display to the display control unit 360 based on the output signal from the proximity detection unit 340 as to whether or not the proximity state for each electrode has been detected. The unit 360 controls display on the display panel 200 based on the input control signal (step S170).

  As described above, according to the present embodiment, the approaching electrode is predicted by the next operation operation of the operator, and the sensitivity with which the proximity detection unit detects the proximity state of the detection target is adjusted according to the prediction. be able to. As a result, it is possible to correctly detect the operation operation of the operator, and to prevent an input different from the intention of the operator from being made.

  The processing of the control parameter selection device of the main device is recorded on a recording medium readable by the computer system, and the program recorded on the recording medium is read by the control parameter selection device of the main device and executed. The control parameter selection device for the main device can be realized. The computer system here includes an OS and hardware such as peripheral devices.

  Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW (World Wide Web) system is used. The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes designs and the like that do not depart from the gist of the present invention.

110X; Electrode 120X; Electrode 110Y; Electrode 120Y; Electrode 200; Display panel (display area)
310; Capacitance detection unit 320; Threshold storage unit 330; Detection control unit 340; Proximity detection unit 350; Control unit 360; Display control unit

Claims (6)

A control parameter selection device for a main device for selecting an operation item and an operation amount of the main device,
A capacitance detecting means for detecting a capacitance according to a mutual distance between the electrode arranged on the display area and the electrode and the detection target;
An operation operation of the detected object is predicted based on at least one of the display contents of the operation item and the operation parameter or the operation operation history of the detected object, and the electrode is subjected to the operation in the predicted operation operation. Detection control means for adjusting a capacitance as a threshold for detecting the approach of the detected object, depending on whether or not the detected object approaches,
Detecting means for detecting the approach of the detected object when the detected capacitance exceeds a threshold adjusted by the detection control means;
A control parameter selection device for a main device, comprising:   The detection control means lowers a capacitance, which is a threshold for detecting the approach of the detected object, lower than a predetermined threshold for the electrode that the detected object approaches in the predicted operation operation. The control parameter selection device for a main device according to claim 1.   The detection control means raises a capacitance, which is a threshold for detecting the approach of the detected object, higher than a predetermined threshold for the electrode that the detected object does not approach in the predicted operation operation. The control parameter selection device for a main device according to claim 1.   4. The control parameter selection device for a main device according to claim 1, wherein the main device is an in-vehicle device such as an air conditioner, an audio device, and a navigation device. A control parameter selection method in a control parameter selection device of a main device for selecting an operation item and an operation amount of the main device,
An electrode disposed across the display area, a capacitance detection means for detecting a capacitance according to the mutual distance between the electrode and the detected object, a detection control means, and a detection means,
A first step in which the detection control means predicts an operation operation of the detected object based on at least one of the display contents of the operation item and the operation parameter or an operation operation history of the detected object;
The detection control means sets a threshold for detecting the approach of the detected object according to whether or not the detected object approaches the electrode in the operation operation predicted in the first step. A second step of adjusting the capacitance;
A third step in which the detection means detects the approach of the detected object when the detected capacitance exceeds the threshold adjusted in the second step;
A control parameter selection method for the main apparatus. A program for causing a computer to execute a control parameter selection method in a control parameter selection device of a main device for selecting an operation item and an operation amount of the main device,
An electrode disposed across the display area, a capacitance detection means for detecting a capacitance according to the mutual distance between the electrode and the detected object, a detection control means, and a detection means,
A first step in which the detection control means predicts an operation operation of the detected object based on at least one of the display contents of the operation item and the operation parameter or an operation operation history of the detected object;
The detection control means sets a threshold for detecting the approach of the detected object according to whether or not the detected object approaches the electrode in the operation operation predicted in the first step. A second step of adjusting the capacitance;
A third step in which the detection means detects the approach of the detected object when the detected capacitance exceeds the threshold adjusted in the second step;
A program that causes a computer to execute.