JP2015111354A - Touch panel operation determination device, touch panel input device, and touch panel operation determination method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch panel input device that can reduce an invalid operation against the intention of a user.SOLUTION: In the case where contact start coordinates P1 are included in the range of an operator although contact end coordinates P2 are not included in the range of the operator and the distance between the contact start coordinates P1 and the contact end coordinates P2 is within a predetermined threshold r1, as well as the case where both the contact start coordinates P1 and contact end coordinates P2 are included in the range of the operator, a touch panel operation determination device determines that an operator "1" has been operated. Thus, even when the contact end coordinates P2 have been unintentionally out of the range of the operator "1" due to the strength of the pressing force of a user's finger, the operation is permitted and made valid.

Description

  The present invention relates to a touch panel operation determination device, a touch panel input device, and a touch panel operation determination method using, for example, a resistive film type touch panel.

  Since touch panel input devices can display various controls on the panel according to the application, they are widely used mainly for electronic devices such as portable terminals. The touch panel input device is an integrated display device (display) and input device, and detects a position touched by a finger or a pen and identifies which display element (operator) is operated. The electronic device on which the touch panel input device is mounted performs an operation corresponding to the specified display element (operator).

  As a touch panel system, there are a resistive film system (for example, see Patent Document 1) and a capacitance system (for example, see Patent Document 2). Each method has advantages and disadvantages. A resistive touch panel is advantageous in that it can detect contact regardless of the conductivity of an object in contact with the panel, as compared to a capacitive touch panel. In other words, when a capacitive touch panel is operated with a finger other than a finger, it is necessary to use a dedicated conductive glove or a dedicated pen, whereas a resistive touch panel is a dedicated glove. And contact can be detected without using a dedicated pen. Therefore, in the field where gloves are used regularly, such as the medical field, a resistive film type touch panel is preferably used.

JP 2001-222378 A JP 2006-344163 A

  By the way, as a method for determining which position on the touch panel is touch-operated, there are a method for determining a contact start coordinate as a touch operation position and a method for determining a contact end coordinate as a touch operation position.

  When the method of determining the touch end position as the touch operation position is used, the electronic device waits for processing until the touch ends (when the finger is released from the panel), and responds to the operation element touched at the touch end. Process. As a result, even if the contact coordinates are within the range of the display element (operation element) at the start of contact, if the contact coordinates are outside the operation element range at the end of contact, the operation element is regarded as not touched and touched. The operation is invalidated.

  Such invalidation processing of the touch operation in the method of determining the contact end coordinates as the touch operation position is convenient because the touch operation can be canceled intentionally. That is, when the user accidentally touches the operation element, the user can cancel the touch operation of the operation element by releasing the finger or the pen at a position away from the operation element.

  On the other hand, such a touch operation invalidation process may be executed against the user's intention. For example, at the start of contact, the touch panel is in contact with the touch panel near the tip of the finger, and the contact coordinates are within the range of the operation element. This is the case. In such a case, contrary to the user's intention, the touch operation on the operation element is invalidated. Such a case can occur remarkably when a small operator is displayed.

  Further, in the touch panel, generally, even if a surface contact is made with a finger, one point coordinate is detected as a representative value, so that the possibility of invalid operation against the user's operation intention increases. Incidentally, the point coordinates detected as the representative value are, for example, the barycentric coordinates of the contacted surface. In particular, the resistive touch panel needs to press the panel more strongly than the capacitive touch panel, so even if the user intends to touch the same position at the start and end of contact. The detected coordinates often deviate from the start of contact and the end of contact. For this reason, possibility that it will be invalid operation contrary to a user's intention increases.

  The present invention has been made in view of the above points, and provides a touch panel operation determination device, a touch panel input device, and a touch panel operation determination method that can reduce invalid operations contrary to the user's intention.

One aspect of the touch panel operation determination device of the present invention is:
A touch panel operation determination device for determining whether or not the operation element is operated based on the contact coordinates input from the touch panel and the contact coordinates and the operation element coordinates,
In addition to the case where the contact start coordinates and the contact end coordinates are both included in the operator range, the contact start coordinates are included in the operator range and the distance between the contact end coordinates and the contact start coordinates is within a predetermined threshold. , It is determined that the operation element has been operated.

One aspect of the touch panel input device of the present invention is:
A touch panel;
A display control unit for controlling display of the touch panel;
Touch element determination unit that receives contact coordinates from the touch panel, determines whether the operation element is operated based on the contact coordinates and the coordinates of the operation element, and outputs a determination result;
Have
The touch element determination unit
In addition to the case where the contact start coordinates and the contact end coordinates are both included in the operator range, the contact start coordinates are included in the operator range and the distance between the contact end coordinates and the contact start coordinates is within a predetermined threshold. , It is determined that the operation element has been operated.

One aspect of the operation discrimination method of the touch panel of the present invention is:
A coordinate input step for inputting contact coordinates from the touch panel;
A determination step of determining whether or not the operation element has been operated based on the contact coordinates and the coordinates of the operation element;
A touch panel operation determination method including
In the determination step,
In addition to the case where the contact start coordinates and the contact end coordinates are both included in the operator range, the contact start coordinates are included in the operator range and the distance between the contact end coordinates and the contact start coordinates is within a predetermined threshold. , It is determined that the operation element has been operated.

  According to the present invention, invalid operations contrary to the user's intention can be reduced.

Schematic which shows the principal part structure of the touchscreen input device which concerns on embodiment The figure which shows the example of an image displayed on a touch panel The flowchart which shows the process sequence by a touch element determination part. Schematic diagram for explaining the processing of the touch element determination unit

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic diagram showing a main configuration of a touch panel input device 100 according to an embodiment of the present invention. The touch panel input device 100 is provided in a medical device such as an electrocardiograph. However, the touch panel input device 100 can be used not only for medical devices but also for other electronic devices.

  The touch panel input device 100 includes a touch panel 101, a touch element determination unit 102, a control unit 103, and a display control unit 104.

  In the touch panel 101, a display device (display) and an input device are integrated. Actually, an input device is arranged on the liquid crystal display. The input device employs a resistive film system.

  The touch panel 101 outputs an ON / OFF signal indicating whether or not the panel is touched and a coordinate signal indicating contact coordinates to the touch element determination unit 102 according to a user's touch operation. For example, when the user continues to touch the same position on the panel, the ON signal is continuously output from the start of the touch and the coordinate signal at the same position is continuously output. On the other hand, when the user moves the finger in a direction parallel to the panel surface while continuing to touch the panel, the ON signal is continuously output from the touch start and a coordinate signal corresponding to the finger movement is generated. Output.

  The touch element determination unit 102 determines which touch element (that is, the operation element) is touched (operated), and outputs information indicating the operation element determined to be touched to the control unit 103. The processing of the touch element determination unit 102 will be described in detail later.

  The control unit 103 executes processing corresponding to the operation element based on the operation element information input from the touch element determination unit 102. For example, when information such as “Menu” being touched as an operator is input, the control unit 103 instructs the display control unit 104 to display a menu screen, and the display control unit 104 displays a menu on the touch panel 101. Display the screen. Further, for example, when information such as a specific number or a specific command being touched is input as an operator, the control unit 103 performs an operation according to the number or command, and via the display control unit 104. The calculation result is displayed on the touch panel 101.

  FIG. 2 shows an example of an image displayed on the touch panel 101. In this image example, operation elements such as numbers are displayed on the touch panel 101, and the user touches a desired operation element with a finger from the displayed operation elements.

  FIG. 3 is a flowchart showing a processing procedure by the touch element determination unit 102 according to the present embodiment.

  When the touch element determination unit 102 starts the process in step S0, the touch element determination unit 102 determines whether or not a finger or the like is in contact with the touch panel 101 based on the ON / OFF signal from the touch panel 101 in step S1. Moves to step S2. In step S2, contact coordinates are input from the touch panel 101, and the input contact coordinates are stored and updated. Actually, the coordinates at the start of contact and the latest contact coordinates updated sequentially are stored. In step S3, it is determined whether time T has elapsed by Δt1, and when time T has elapsed by Δt1, the process returns to step S1. This Δt1 is a sampling time for acquiring the coordinate signal. In this way, the touch element determination unit 102 acquires the coordinates at the start of contact and the latest contact coordinates by repeating the processes of steps S1-S2-S3-S1.

  When the touch element determination unit 102 obtains a negative result in step S1, that is, when the user's finger leaves the touch panel 101 and inputs an OFF signal from the touch panel, the touch element determination unit 102 determines whether or not there are stored coordinates in step S4. If it is determined in step S4 that there are no stored coordinates, this means that the touch panel 101 has not been touched, so that the process moves to step S9 and is determined to be invalid. Here, “invalid” means that the operator is not operated (touched).

  If the touch element determination unit 102 determines that the coordinates stored in step S4 are present, the touch element determination unit 102 proceeds to step S5 and determines whether the contact start coordinates are within the range of the operator. If a negative result is obtained in step S5, the process proceeds to step S9 to determine invalidity. The touch element determination unit 102 receives the coordinate information of the operator currently displayed on the touch panel 101 from the display control unit 104, and compares the coordinate information of the operator with the contact coordinates input from the touch panel 101. Whether or not the contact coordinates are within the range of the operating element is detected, and if it is, the range of the operating element is detected.

  If the touch element determination unit 102 obtains a positive result in step S5, the touch element determination unit 102 proceeds to step S6. In step S6, it is determined whether or not the contact end coordinates are within the range of the operation element. If an affirmative result is obtained in step S6, the process proceeds to step S8, where it is determined to be valid, and information indicating the manipulator is output to the control unit 103. That is, when both the contact start coordinates and the contact end coordinates are included in the operation element range, the touch element determination unit 102 determines that the operation element has been touched.

  On the other hand, if the touch element determination unit 102 obtains a negative result in step S6, the touch element determination unit 102 proceeds to step S7. In step S <b> 7, the touch element determination unit 102 determines whether or not the contact end coordinate is within the radius r <b> 1 from the contact start coordinate. Note that the radius r1 may be set to a distance at which the user may unintentionally shift from a point to be touched when the user touches the surface with a finger. In the case of the present embodiment, r1 = 1 cm is set. If an affirmative result is obtained in step S7, the process proceeds to step S8, where it is determined to be valid, and information indicating the manipulator is output to the control unit 103. As described above, the touch element determination unit 102 includes the contact start coordinates in the operator range even if the contact end coordinates are not included in the operator range, and the distance between the contact end coordinates and the contact start coordinates is a predetermined distance. If it is within the threshold value, it is determined that the operator has been operated.

  If the touch element determination unit 102 obtains a negative result in step S7, the touch element determination unit 102 proceeds to step S9 and determines that it is invalid. After the process of step S9, the touch element determination unit 102 moves to step S10 and ends the process procedure.

  Next, the process of the touch element determination unit 102 will be schematically described with reference to FIG. FIG. 4 is an enlarged view of the numeric operator “1”.

  It is assumed that the contact start coordinate when the user touches the touch panel 101 with a finger is P1, and the contact end coordinate is P2. Conventionally, since the contact end coordinate P2 is outside the range of the operation element “1”, it is considered that the operation element “1” has not been touched. On the other hand, the touch element determination unit 102 according to the present embodiment has the contact start coordinate P1 within the range of the operator “1” even if the contact end coordinate P2 is outside the range of the operator “1”. If the distance r between the contact start coordinate P1 and the contact end coordinate P2 is equal to or less than the distance r1, it is determined that the operator “1” is touched. As a result, even if the contact end coordinate P2 is unintentionally outside the range of the operation element “1” due to the finger pressing by the user, this is permitted and the operation is validated. Of course, when the contact end coordinate P2 is within the range of the operation element “1”, even if the distance r between the contact start coordinate P1 and the contact end coordinate P2 is larger than the distance r1, the operation element “1”. Determines that it has been touched.

  As described above, according to the present embodiment, in addition to the case where the contact start coordinate P1 and the contact end coordinate P2 are both included in the operator range, the contact start coordinate P1 is included in the operator range and the contact end is reached. When the distance between the coordinate P2 and the contact start coordinate P1 is within the predetermined threshold r1, it is determined that the operation element has been operated, thereby enabling the touch panel input device 100 that can reduce invalid operations contrary to the user's intention. Can be realized.

  In particular, the resistive touch panel needs to press the panel more strongly than the capacitive touch panel. The detected coordinates often deviate from the start of contact and the end of contact. For this reason, the operation determination method according to the present embodiment can achieve a remarkable effect when applied to a touch panel that needs to be strongly pressed, such as a resistive touch panel.

  Further, since the invalid operation is performed when the contact end coordinate P2 is separated from the contact start coordinate P1 by the distance r1, it is possible to intentionally cancel the touch operation. If the allowable distance r1 is too large, the canceling operation is difficult to perform. Therefore, the allowable distance r1 may be set in consideration of this.

  In the above-described embodiment, the case where processing is performed using only the contact end coordinates P2 has been described. However, the coordinates in contact are tracked in real time, and the real time contact coordinates are included in the operator range together with the contact start coordinates. In addition to the case where the contact start coordinate P1 is included in the operator range and the distance between the contact start coordinate and the real time contact coordinate is within a predetermined threshold value, the color of the operator is changed and displayed in real time. Also good. In this way, the user can recognize whether the current touch position is valid or invalid based on the color of the operator. Such processing can be realized by the display control unit 104 changing the color of the operation element based on the determination result by the touch element determination unit 102.

  The above-described embodiments are merely examples of implementation in carrying out the present invention, and the technical scope of the present invention should not be construed as being limited thereto. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

  The present invention has an effect that invalid operations contrary to the user's intention can be reduced, and is suitable, for example, when the contact start coordinates and the contact end coordinates are unintentionally shifted.

DESCRIPTION OF SYMBOLS 100 Touch panel input device 101 Touch panel 102 Touch element determination part 103 Control part 104 Display control part

Claims (4)

A touch panel operation determination device for determining whether or not the operation element is operated based on the contact coordinates input from the touch panel and the contact coordinates and the operation element coordinates,
In addition to the case where the contact start coordinates and the contact end coordinates are both included in the operator range, the contact start coordinates are included in the operator range and the distance between the contact end coordinates and the contact start coordinates is within a predetermined threshold. , Determining that the operator has been operated,
Touch panel operation identification device. A touch panel;
A display control unit for controlling display of the touch panel;
Touch element determination unit that receives contact coordinates from the touch panel, determines whether the operation element is operated based on the contact coordinates and the coordinates of the operation element, and outputs a determination result;
Have
The touch element determination unit
In addition to the case where the contact start coordinates and the contact end coordinates are both included in the operator range, the contact start coordinates are included in the operator range and the distance between the contact end coordinates and the contact start coordinates is within a predetermined threshold. , Determining that the operator has been operated,
Touch panel input device. The coordinates in contact are tracked in real time, and in addition to the case where the real time contact coordinates are included in the operator range together with the contact start coordinates, the contact start coordinates are included in the operator range and the contact start coordinates and the real time When the distance from the contact coordinates is within a predetermined threshold, the color of the operation element is changed in real time and displayed on the touch panel.
The touch panel input device according to claim 2. A coordinate input step for inputting contact coordinates from the touch panel;
A determination step of determining whether or not the operation element has been operated based on the contact coordinates and the coordinates of the operation element;
A touch panel operation determination method including
In the determination step,
In addition to the case where the contact start coordinates and the contact end coordinates are both included in the operator range, the contact start coordinates are included in the operator range and the distance between the contact end coordinates and the contact start coordinates is within a predetermined threshold. , Determining that the operator has been operated,
Touch panel operation identification method.

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