JP5782821B2 - Touch panel device and control method of touch panel device - Google Patents

Description

  The present invention relates to a touch panel device and a control method thereof.

  2. Description of the Related Art Conventionally, a touch panel device that can perform an input operation by operating an operation surface of a touch panel arranged on the display with an operating finger according to information displayed on a display screen of the display is known. For example, Patent Document 1 discloses a method of changing detection sensitivity in accordance with a sliding direction when processing according to a sliding operation with an operating finger is performed. Specifically, the threshold setting unit acquires a slide direction that increases sensitivity. When the fingertip is slid on the touch panel, the coordinate detection unit detects the coordinate, and the slide direction detection unit determines in which direction the fingertip slides from the received change in the coordinate value. The determination unit determines that an operation command has been issued from the user in that direction when either of the preset forward threshold value and the reverse threshold value is exceeded, and the operation command is transmitted to the device control unit. Is output.

JP 2006-277588 A

  By the way, according to the method disclosed in Patent Document 1, when a push operation is performed as an operation method other than a slide operation, an operation in which an operation finger crosses the operation surface of the touch panel may be erroneously detected as a slide operation. There is.

  The present invention has been made in view of such circumstances, and an object of the present invention is to accurately detect an operation with an operation finger regardless of an operation method of an operation button.

In order to solve such a problem, in the present invention , the setting means displays a slide operation button for accepting a slide operation or a push operation and a push operation button for accepting a push operation on the display screen. The distance detection value as a value corresponding to the distance between the operation finger and the position of the operation finger is output as detection information, and the operation detection means refers to this detection information and performs a push operation or a slide operation. To detect. In this case, the operation detection unit is configured to push the push based on a transition of the distance detection value before and after the operation finger contacts the touch panel unit and a movement direction of the operation finger specified from the transition of the position of the operation finger. It is determined whether the operation is on the operation button or the slide operation button , and the detection sensitivity is different between the push operation and the slide operation.

  According to the present invention, since the detection sensitivity is different between the push operation and the slide operation, the operations can be appropriately separated. Thereby, it is possible to accurately detect an operation with the operating finger regardless of the operation method.

Block diagram schematically showing the configuration of the touch panel device Explanatory drawing which shows the operation button displayed on the touch panel display 1 typically. Flowchart illustrating operation finger detection operation of touch panel device Explanatory drawing which shows the relationship with the distance (capacitance value) between the operation surface corresponding to a slide operation, and an operation finger. Explanatory drawing which shows the relationship between the distance (capacitance value) between the operation surface corresponding to push operation, and an operation finger. Explanatory drawing which shows the relationship between the distance (capacitance value) between the operation surface corresponding to push operation, and an operation finger. Explanatory drawing explaining the method of changing a detection range according to a driving | running | working state Explanatory drawing showing detection sensitivity, detection time, and response time of operation buttons

(First embodiment)
FIG. 1 is a block diagram schematically showing the configuration of the touch panel device according to the present embodiment. This touch panel device is a device capable of performing an input operation corresponding to display contents displayed on a display screen, and is mounted on a vehicle, for example. A vehicle occupant can operate a vehicle device (for example, a car navigation device, an air conditioner) through the touch panel device. The touch panel device mainly includes a touch panel display 1, a capacitance value detection unit 2, an operation detection unit 3, a controller 4, and a vehicle state detection unit 5.

  The touch panel display 1 includes a display unit such as a liquid crystal and a touch panel unit disposed on a display screen of the display unit, and is disposed on, for example, an instrument panel of a vehicle. The touch panel unit includes an operation surface operated by an operation finger (such as a finger or a dedicated pen). The touch panel device in the present embodiment is a device using a capacitance method, and the touch panel unit includes detection electrodes (not shown) arranged two-dimensionally. The touch panel unit can output the state of the operation finger with respect to the operation surface as a change in capacitance by the detection electrode.

  FIG. 2 is an explanatory diagram schematically showing operation buttons displayed on the touch panel display 1. As shown in the figure, various operation buttons 1a and 1b are displayed on the display unit of the touch panel display 1 under the control of a controller 4 described later.

  Here, the push operation button 1a is an operation button for operating when selecting a single item or selection such as “current location” and “information” as shown in FIG. This push operation button 1a outputs single operation information in response to a push operation by an operation finger, that is, an operation consisting of a single operation of pressing the operation surface with the operation finger.

  On the other hand, the slide operation button 1b is used for continuously changing a plurality of items and selections such as volume adjustment of an audio device, selection of a song name, etc., temperature adjustment of an air conditioner, and map scroll of a navigation system. This is an operation button for operation. The slide operation button 1b continuously outputs operation information in response to a slide operation by an operation finger, that is, an operation consisting of an operation finger tracing the operation surface in the slide direction (in the direction of the triangular arrow in the figure). . In addition, when the slide operation button 1b is pushed by the operation finger, single operation information is output.

  The capacitance value detection unit 2 is a distance detection value as a value corresponding to the distance between the operation surface of the touch panel display 1 (touch panel unit) and the operation finger, that is, the capacitance output from the touch panel display 1. The capacitance value as a change and the position of the operating finger are output as detection information (detection information output means). The capacitance value detection unit 2 outputs detection information including a capacitance value and a detection position at a predetermined cycle.

The operation detection unit 3 is based on detection information output in time series from the capacitance value detection unit 2.
User operation content such as a push operation or a slide operation is detected (operation detection means). Specifically, the operation detection unit 3 sets the operation position (detection position) of the operation finger based on the display information including the position of the operation button displayed on the display screen of the touch panel display 1 by the controller 4 and the operation method. The corresponding operation button is determined, the operation content for the operation button is determined according to the operation mode, and predetermined information is output to the controller 4.

  The operation detection unit 3 includes a storage memory 31, a button method determination unit 32, an operation distance determination unit 33, an operation direction determination unit 34, and a determination result output unit 35, when this is viewed functionally. .

The storage memory 31 stores the detection information output from the capacitance value detection unit 2, that is, the capacitance value and the detection position. The operation distance determination unit 33 determines the distance between the operation finger and the touch panel display 1 based on the capacitance value stored in the storage memory 31. Operation direction determination unit 34 detects a change direction of the detected position based on the detected position to be stored in the storage memory 31, thereby to determine the operating direction of the control finger. The button method determination unit 32 is based on the detection information stored in the storage memory 31, the display information displayed on the touch panel display 1 by the controller 4, and the operation direction determined by the operation direction determination unit 34. The operation method (push operation or slide operation) of the operation button operated by is determined. The determination result output unit 35 determines the operation detection result based on the operation button operated from the determination result of the button method determination unit 32 and the detection sensitivity set for each operation button, and the result is obtained. Output to the controller 4.

  The controller 4 stores application software and executes various processes. Specifically, as shown in FIG. 1, the controller 4 controls the touch panel display 1 and displays predetermined display contents (operation buttons, a map, etc.) on its display screen. In this case, the controller 4 operates the operation method of each operation button such as push operation / slide operation / multi-touch operation of the displayed operation button, the detection position and detection area corresponding to each operation button, and the detection sensitivity of each operation button. And detection time, response time, etc. are set (setting means). Such information is also transmitted to the button method determination unit 32. Further, the controller 4 operates a predetermined function based on the operation detection result from the operation detection unit 3.

  Here, the detection sensitivity is a sensitivity for detecting a touch of an operation finger such as a push operation or a slide operation. When the detection sensitivity is set high, the detection sensitivity is set lower than when the detection sensitivity is set low. The operation can be detected even with a small pressing force and a short pressing time. The detection time is the determination time required from the start of the operation until it is determined that the operation is detected, and the response time is the time from the operation detection until the corresponding function is operated. Corresponds to detection sensitivity in a broad sense.

  The vehicle state detection unit 5 detects the traveling state (for example, vehicle speed) of the vehicle, and acquires information such as whether the vehicle is in a traveling state or a stopped state, driver operation information, and the like (vehicle state detection means) ). The acquired information is output to the controller 4.

  FIG. 3 is a flowchart illustrating an operation finger detection operation of the touch panel device according to the present embodiment. First, in step 1 (S1), the operation detection unit 3 starts detecting a capacitance value. That is, the operation detection unit 3 reads the detection information output from the capacitance detection unit 2 at a predetermined cycle in time series. The read detection information is stored in the storage memory 31.

In step 2 (S2), the operation distance determination unit 33 compares the capacitance value read one cycle ago with the currently read capacitance value to determine whether or not the capacitance value has changed. to decide. If an affirmative determination is made in step 2, that is, if the capacitance value has changed, the process proceeds to step 3 (S3). On the other hand, if a negative determination is made in step 2, that is,
If the capacitance value has not changed, the process returns to step 1.

  In step 3, the operation distance determination unit 33 determines whether or not the above-described change amount of the capacitance value is smaller than a specified value. The specified value set in this step is set in advance through experiments and simulations in order to determine whether or not the change in capacitance value is noise. If an affirmative determination is made in step 3, that is, if the amount of change in capacitance value is smaller than the specified value, the process proceeds to step 5 (S5) described later. On the other hand, if a negative determination is made in step 3, that is, if the change amount of the capacitance value is greater than or equal to the specified value, the process proceeds to step 4 (S4).

  In step 4, the operation distance determination unit 33 determines that it is noise because the change in capacitance value is a rapid change, and returns to step 1.

  In Step 5, the operation distance determination unit 33 determines whether or not the current capacitance value is within a predetermined sensitivity range when the operation surface of the touch panel unit is touched. If an affirmative determination is made in step 5, that is, if the capacitance value is within a predetermined sensitivity range, the process proceeds to step 8 (S8) described later. On the other hand, if a negative determination is made in step 5, that is, if the capacitance value is not within the predetermined sensitivity range, the process proceeds to step 6 (S6) described later.

  In step 6, the operation distance determination unit 33 determines whether or not the detection position fluctuates near the screen surface. If an affirmative determination is made in step 6, that is, if the detected position fluctuates near the screen surface, the process returns to step 5. On the other hand, if a negative determination is made in step 6, that is, if the detected position does not fluctuate near the screen surface, the process proceeds to step 7 (S7).

  In step 7, the operation distance determination unit 33 determines that there is no operation with the operation finger.

  On the other hand, in step 8, the operation distance determination unit 33 determines that there is an operation with the operation finger.

  In step 9, the button method determination unit 32 determines whether or not the slide operation button 1b is at the detection position. If an affirmative determination is made in step 9, that is, if the slide operation button 1b is present at the detection position, the process proceeds to step 10 (S10). On the other hand, if a negative determination is made in step 10, that is, if there is no slide operation button 1b at the detection position, the process proceeds to step 11 (S11).

  In step 10, the button method determination unit 32 determines whether or not the capacitance value is gradually decreasing. If an affirmative determination is made in step 10, that is, if the capacitance value is gradually decreasing, the process proceeds to step 12 (S12) described later. On the other hand, if a negative determination is made in step 10, that is, if the capacitance value has not decreased gently, the process proceeds to step 11.

  In step 11, the button method determination unit 32 determines whether or not the push operation button 1a is at the detection position. If the determination in step 11 is affirmative, that is, if the push operation button 1a is present at the detection position, the process proceeds to step 15 (S15) described later. On the other hand, if a negative determination is made in step 11, that is, if there is no push operation button 1a at the detection position, the process proceeds to step 16 (S16) described later.

In step 12, the operation direction determination unit 34 determines whether or not the directions correspond, that is, whether or not the change direction of the detection position of the capacitance value corresponds to the operation direction applied to the slide operation button 1b. Judging. If an affirmative determination is made in step 12, that is, if the directions correspond, the process proceeds to step 13 (S13). On the other hand, if a negative determination is made in step 12, that is, if the direction does not correspond, the process proceeds to step 14 (S14).

  In step 13, the determination result output unit 35 determines that the operation with the operating finger is a slide operation of the slide operation button 1b. On the other hand, in step 14, the determination result output unit 35 determines that the operation with the operating finger is a push operation of the slide operation button 1b. In step 15, the determination result output unit 35 determines that the operation with the operating finger is a push operation of the push operation button 1a. On the other hand, in step 16, the determination result output unit 35 determines that the operation with the operation finger is an operation other than the operation button, that is, an erroneous operation.

  FIG. 4 is an explanatory diagram showing a relationship between a distance (capacitance value) between the operation surface corresponding to the slide operation and the operation finger. As shown in FIG. 4, when the operation finger is moved in accordance with the direction of the slide operation button 1b, the operation finger touches a predetermined position of the slide operation button 1b and then follows the direction of the slide operation button 1b. Move your finger to. Therefore, the distance between the operating finger and the screen tends to gradually move away while moving in the sliding direction.

  FIG. 5 is an explanatory diagram showing a relationship between a distance (capacitance value) between the operation surface corresponding to the push operation and the operation finger. This figure shows a state in which the push operation switch 1a is operated after the operating finger is moved while searching for the push operation switch 1a corresponding to “status display”. In this case, since the operation finger is moved from the lower left of the operation surface while confirming the operation switch, after passing over the surface of the slide operation button 1b, the finger is operated after confirming the push operation button 1a of "status display". Perform the touch operation with. For this reason, the change state of the electrostatic capacitance value that touches the operation surface while moving so as to trace on the operation surface is detected.

  FIG. 6 is an explanatory diagram showing a relationship between a distance (capacitance value) between the operation surface corresponding to the push operation and the operation finger. In the same figure, the state which operated the said push operation switch 1a in the state which has visually recognized the push operation switch 1a corresponding to "the present location" is shown. In this case, since the operation is performed with the push operation button 1a to be operated being confirmed, the push operation button 1a corresponding to the target “current location” can be pressed without hesitation.

  As described above, according to the present embodiment, the operation detection unit 3 refers to the detection information output from the capacitance value detection unit 2 and detects a push operation or a slide operation. In this case, the operation detection unit 3 is based on the transition of the capacitance value before and after the operation finger contacts the operation surface of the touch panel unit and the movement direction of the operation finger specified from the change of the position of the operation finger. The detection sensitivity is different between the push operation and the slide operation (steps 5 to 15). According to such a configuration, since the detection sensitivity is different between the push operation and the slide operation, the operations can be appropriately separated. Thereby, it is possible to accurately detect an operation with the operation finger regardless of the operation method of the operation button.

  Further, according to the present embodiment, the operation detection unit 3 sets the detection sensitivity higher in the slide operation than in the push operation. For example, as shown in FIG. 5, when a push operation is performed, even if there is a state of passing over the slide operation button 1b, the push to the push operation button 1a is not erroneously detected as a push operation. Only the operation can be detected appropriately. Thereby, it is possible to accurately detect an operation with the operation finger regardless of the operation method of the operation button.

Further, the controller 4 displays the display contents on the display screen (in this embodiment, the operation buttons 1a,
The detection area is set according to 1b), and the detection sensitivity of the detection area is set according to the operation method of the display content. According to such a configuration, the detection area and the detection sensitivity can be set in accordance with the operation buttons 1a and 1b on the display screen.

(Second Embodiment)
FIG. 7 is an explanatory diagram for explaining a method of changing the detection range according to the traveling state. The difference between the touch panel device of the second embodiment and that of the first embodiment is that the detection range is changed in accordance with the traveling state. The description will focus on the differences from the first embodiment, and the description below will focus on the differences.

  For example, while the vehicle is stopped, the user can perform an operation while gazing at the touch panel display 1. Therefore, as shown in FIG. 5A, when the controller 4 determines that the vehicle is stopped from the detection result of the vehicle state detection unit 5, the region D1 corresponding to the operation button (for example, the push operation button 1a). Set the detection sensitivity to high. Thereby, the responsiveness with respect to a user's operation is aimed at.

  On the other hand, for example, while the vehicle is traveling, the user is gazing at the traveling environment ahead, so that the operation can be performed without fully viewing the touch panel display 1. In this case, there is a possibility that the operation finger will fluctuate and an operation button existing around other than the target operation button will be erroneously operated. Therefore, as shown in FIG. 5B, when the controller 4 determines that the vehicle is running from the detection result of the vehicle state detection unit 5, the detection sensitivity of the region D1 at the center of the operation button 1a is increased. The detection sensitivity of the surrounding area D2 is lowered than that of the area D1, and the detection sensitivity of the surrounding area D3 is further lowered than that of the area D2.

  As described above, according to the present embodiment, the controller 4 determines whether the vehicle is running or stopped based on the detection result of the vehicle state detection unit 5, and changes the detection sensitivity according to the determination result. According to such a configuration, it is possible to distinguish between a situation in which an erroneous operation is likely to occur and a situation that is not such a situation. Thereby, generation | occurrence | production of an erroneous operation can be suppressed and a reliable operation can be performed by a user.

  In the above-described embodiment, the push operation button 1a has been described. However, the slide operation button 1b can be similarly set. In addition to the setting according to such a region, as shown in FIG. 8, the detection sensitivity, detection time, and response time of the operation buttons may be changed between running and stopping.

  Here, FIG. 8 is an explanatory diagram showing detection sensitivity, detection time, and response time of the operation buttons. In the same figure, it is explanatory drawing which shows the relationship of the detection sensitivity, detection time, and response time corresponding to a stop and driving | running | working. For example, the detection sensitivity is classified into three categories of “high detection sensitivity”, “medium detection sensitivity”, and “low detection sensitivity” in descending order of the detection sensitivity, and the detection time is from the shortest detection time. In order, they are classified into “short detection time”, “medium detection time”, and “long detection time”. Further, the response time is classified into “early response time”, “medium response time”, and “late detection time” in order from the earliest response time.

  For example, an operation button that is applied to a predetermined menu operation and that is used for a single push operation is set to high detection sensitivity, short detection time, and quick response time when the vehicle is stopped, while it is set while driving. The low detection sensitivity or the medium detection sensitivity, the long detection time, and the slow response time are set. In addition, operation buttons used for fixed-length slide operations that are applied to the FAN speed (blowing speed) of the air conditioner are set to high detection sensitivity, short detection time, and quick response time while the vehicle is stopped. Thus, during traveling, the low detection sensitivity or the medium detection sensitivity, the long detection time, and the slow response time are set.

  The touch panel device and the control method thereof according to the embodiment of the present invention have been described above. However, the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. Not too long.

DESCRIPTION OF SYMBOLS 1 Touch panel display 1a Push operation button 1b Slide operation button 2 Capacitance value detection part 3 Operation detection part 31 Storage memory 32 Button system determination part 33 Operation distance determination part 34 Operation direction determination part 35 Determination result output part 4 Controller 5 Vehicle state Detection unit

Claims (5)

A touch panel display in which a touch panel portion is arranged on the display screen;
A setting means for displaying a slide operation button for receiving a slide operation or a push operation and a push operation button for receiving a push operation on the display screen;
A detection information output means for outputting a distance detection value as a value according to a distance between the touch panel unit and the operation finger and a position of the operation finger as detection information;
Operation detection means for detecting a push operation or a slide operation with reference to detection information output from the detection information output means,
The operation detection means is based on the transition of the distance detection value before and after the operation finger contacts the touch panel unit, and the movement direction of the operation finger specified from the transition of the position of the operation finger.
A touch panel device that determines whether the operation is performed on the push operation button or the slide operation button , and the detection sensitivity is different between the push operation and the slide operation.   The touch panel device according to claim 1, wherein the operation detection unit sets the detection sensitivity higher in the slide operation than in the push operation. The setting means sets a detection area in accordance with the display contents on the display screen, according to claim 1, characterized in the Turkey to set the detection sensitivity of the detection area according to the operation method of the display contents or 2. The touch panel device described in 2. Vehicle state detection means for detecting the running state of the vehicle ,
The setting means, according to claim 3, wherein based on the detection result of the vehicle state detection means determines a parked and during travel of the vehicle, and changes the detection sensitivity in accordance with the determination result Touch panel device. A touch panel display in which a touch panel unit is arranged on the display screen, a slide operation button for receiving a slide operation or a push operation, and a push operation button for receiving a push operation on the display screen; the touch panel unit and an operation finger; A distance detection value as a value corresponding to the distance between the detection information and a detection information output unit that outputs the position of the operation finger as detection information, and detection information output from the detection information output unit, and a push operation or slide In a control method of a touch panel device including an operation detection unit that detects an operation ,
A first step in which the detection information output unit outputs the detection information ;
The operation detection unit, before referring to the dangerous out information, and a second step of detecting a push operation or sliding operation,
In the second step, the push operation is performed based on a transition of the distance detection value before and after the operation finger contacts the touch panel unit and a moving direction of the operation finger specified from the transition of the position of the operation finger. A method for controlling a touch panel device , comprising: determining whether an operation is performed on a button or an operation on a slide operation button , and detecting sensitivity is different between the push operation and the slide operation.

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