JP2015088147A - Touch panel input device and input processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a drawing of a line and an erasure of the line to be quickly changed over in a hand writing function using a touch panel.SOLUTION: A touch panel input device 1 comprises: a touch panel 2 that has a display part 21 and a sensor 22 for detecting a touch state; and a processing unit 3 that draws an image on the display part 21 on the basis of the touch state. In the touch state to be detected, provided are a touch position and a contact area to be touched. A processing unit 3 has an erasure mode, and when the touch area exceeds a prescribed threshold, the processing part is configured to turn the erasure mode OFF, and when the touch to the touch panel 2 is released, the processing unit is configured to turn the erasure mode OFF. When the erasure mode is turned OFF at a time when the touch panel 2 is touched, the processing unit 3 is configured to draw a line along a movement trajectory of the touch position in the display part 21, and when th erasure mode is turned ON, the processing unit is configured to erase a line within a prescribed range including the touch position from the display part 21. Accordingly, the ON/OFF of the erasure mode can be changed over with the number of operations smaller than that in a touch of an icon.

Description

  The present invention relates to a touch panel input device having a handwriting function and an input processing program that operates on the touch panel input device.

  Conventionally, touch panels have been used in information terminals such as tablet terminals. A touch panel has a sensor for detecting a touch position etc. on the display as a display part. An apparatus that realizes a handwriting function using such a touch panel is known (see, for example, Patent Document 1).

  When using the handwriting function with such an apparatus, as shown in FIG. 8A, first, the user touches the pen icon 23 arranged in the icon area 102a of the touch panel 102, and then, FIG. As shown in (b), the handwriting area 102b is touched, and the line L is drawn with the touched finger or the like. The line L constitutes, for example, a character or a figure. When erasing the line L, first, as shown in FIG. 9A, the eraser icon 24 arranged in the icon area 102a is touched, and then, as shown in FIG. 9B, the handwriting area The user touches 102b and erases by tracing the line L with the touched finger or the like. As the pen icon 23 and the eraser icon, a character icon may be used instead of the graphic icon (see, for example, FIG. 13 of Patent Document 1).

  As shown in FIG. 10, the handwriting function using the touch panel has two states in which the erase mode is off (state S0) and the erase mode is on (state S1). When the erase mode is off (state S0), the user draws a line on the touch panel, and when the erase mode is on (state S1), the user erases the line. In the conventional handwriting function, the transition between these two states requires the touch of the eraser icon (event e11) or the touch of the pen icon (event e12). In order to touch the icon, the handwriting area and the icon area Further reciprocation of a finger or the like is necessary between them, which takes time and effort. For this reason, it is difficult to use the handwriting function using the touch panel for an application requiring quickness.

JP 2005-92256 A

  An object of the present invention is to solve the above-described problem and to enable quick switching between line drawing and line erasing in a handwriting function using a touch panel.

  A touch panel input device of the present invention includes a display unit and a touch panel having a sensor for detecting a touch state, and a processing unit that draws an image on the display unit based on the touch state, and is detected. The touch state includes a touch position and a touch area to be touched, and the processing unit has an erase mode, and when the contact area exceeds a predetermined threshold, the erase mode is turned on, and the touch panel When the touch is released, the erase mode is turned off, and if the erase mode is off when the touch panel is touched, a line along the movement locus of the touch position is drawn on the display unit. When the erase mode is on, a line within a predetermined range including the touch position is erased from the display unit.

  A touch panel input device of the present invention includes a display unit and a touch panel having a sensor for detecting a touch state, and a processing unit that draws an image on the display unit based on the touch state, and is detected. The touch state includes a touch position and a pressing force to be touched, and the processing unit has an erasing mode, and when the pressing force exceeds a predetermined threshold, the erasing mode is turned on, and the touch panel When the touch is released, the erase mode is turned off, and if the erase mode is off when the touch panel is touched, a line along the movement locus of the touch position is drawn on the display unit. When the erase mode is on, a line within a predetermined range including the touch position is erased from the display unit.

  An input processing program of the present invention is executed by a touch panel input device including a touch panel having a display unit and a sensor for detecting a touch state, and a processing unit for drawing an image on the display unit based on the touch state. The detected touch state includes a touch position and a touched contact area, and the processing unit has an erasing mode, and the erasing is performed when the touch area exceeds a predetermined threshold. When the mode is turned on and the touch on the touch panel is released, the erase mode is turned off, and if the erase mode is off when the touch panel is touched, the touch position moves along the trajectory. When a line is drawn on the display unit and the erase mode is on, a line within a predetermined range including the touch position is erased from the display unit. Characterized in that for the execution.

  An input processing program of the present invention is executed by a touch panel input device including a touch panel having a display unit and a sensor for detecting a touch state, and a processing unit for drawing an image on the display unit based on the touch state. The detected touch state includes a touch position and a pressing force to be touched, and the processing unit has an erasing mode, and the erasing is performed when the pressing force exceeds a predetermined threshold. When the mode is turned on and the touch on the touch panel is released, the erase mode is turned off, and if the erase mode is off when the touch panel is touched, the touch position moves along the trajectory. A process of drawing a line on the display unit and erasing a line within a predetermined range including the touch position from the display unit when the erase mode is on. Characterized in that to the row.

  According to the touch panel input device and the input processing program of the present invention, the erase mode for erasing the line is turned on while the touch panel is touched, and the erase mode is turned off only by releasing the touch. The erasing mode can be quickly switched on and off with fewer operations than touching the icon.

The block block diagram of the touch-panel input device which concerns on the 1st Embodiment of this invention. A state transition diagram showing operation of the touch panel input device. The screen image figure which shows the drawing of the line in the touch panel input device. The screen image figure which shows the deletion of the line in the touch panel input device. The flowchart which shows operation | movement of the input processing program performed with the touch panel input device. The state transition diagram which shows operation | movement of the touchscreen input device which concerns on the 2nd Embodiment of this invention. The flowchart which shows operation | movement of the input processing program performed with the touch panel input device. (A) and (b) are screen image diagrams showing line drawing in a time series in a conventional touch panel input device. (A) and (b) are the screen image figures which show the deletion of the line in the touch panel input device in time series. A state transition diagram showing operation of the touch panel input device.

(First embodiment)
A touch panel input device and an input processing program according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the touch panel input device 1 includes a touch panel 2 and a processing unit 3. The touch panel 2 includes a display unit 21 and a sensor 22. The sensor 22 is for detecting a touch state. The processing unit 3 draws an image on the display unit 21 based on the touch state. In the touch panel input device 1, the detected touch state includes a touch position and a touched contact area.

  As shown in FIG. 2, the processing unit 3 has an erase mode as an operation mode. When the detected contact area exceeds a predetermined threshold (event e1), the processing unit 3 turns on the erase mode (state S1). When the touch on the touch panel 2 is released, the processing unit 3 turns off the erase mode (state S0) (event e2).

  If the erase mode is off when the touch panel 2 is touched (state S0 in FIG. 2), the processing unit 3 displays the line L along the movement locus of the touch position P as shown in FIG. Draw on the unit 21. The line L is drawn by changing a small range of colors centered on the touch position P. When the erase mode is on (state S1 in FIG. 2), the processing unit 3 erases the line L within the predetermined range R including the touch position P from the display unit 21, as shown in FIG. The predetermined range R is, for example, a circle with a predetermined radius centered on the touch position P.

  Note that the erase mode off (state S0) may be referred to as “pen mode” or “drawing mode”. The erase mode on (state S1) may be referred to as an “eraser mode”.

  As consideration for the user who is used to the conventional operation method, the pen icon 23 and the eraser icon 24 may be displayed on the touch panel 2 (see FIGS. 3 and 4). In this case, a function for turning on the erasing mode by touching the eraser icon 24 (event e11) and a function for turning off the erasing mode by touching the pen icon 23 (event e12) are added (FIG. 5). 2). However, when touching with only one finger or the like, the touch on the touch panel 2 is canceled before touching the icon (event e2), so the touch on the pen icon 23 (event e12) is useless. It becomes operation. The pen icon 23 and the eraser icon 24 may be omitted.

  The configuration of the touch panel input device 1 will be described in further detail (see FIG. 1). The touch panel input device 1 is provided in a tablet terminal, for example. The touch panel 2 is a thin touch panel that can detect a touched contact area. The display unit 21 of the touch panel 2 is, for example, a liquid crystal display. An organic EL display may be used for the display unit 21. The sensor 22 of the touch panel 2 is, for example, a capacitive type. The processing unit 3 includes a CPU, a memory, and the like, and operates by executing an input processing program stored in the memory. For example, in a tablet terminal or the like, a CPU and memory (hardware resource) such as a tablet terminal is used as the CPU and memory of the processing unit 3.

  The touch position detected as the touch state of the touch panel 2 is a two-dimensional coordinate substantially at the center of the touched location on the touch panel 2.

  The contact area detected as the touch state of the touch panel 2 is the size of the area of the touched location. When the touch panel 2 is touched with a finger, the contact area is increased by increasing the touching force. Further, the contact area is increased by changing the part of the finger to be touched from the fingertip to the belly of the finger. In the touch panel input device 1, the value of the contact area is not limited to a value expressed in area units (such as square millimeters), and for example, the magnitude of the output signal of the sensor 22 may be used as it is.

  The operation of the input processing program executed by the touch panel input device 1 configured as described above will be described with reference to FIG. When the execution of the input processing program is started (step S100), first, the input processing program is initially set in the processing unit 3 (step S101). Since the touch panel 2 is not touched in the initial state, the touch is released, and the erase mode is turned off (OFF) by the initial setting. In the initial setting, a threshold value for turning on the erase mode is set. This threshold value is stored in the nonvolatile memory of the processing unit 3 and is read out by the input processing program. You may enable it to adjust this threshold value by a user's operation.

  Next, when the touch panel 2 is touched (Yes in step S102), the contact area is read (step S103). When the contact area is equal to or smaller than the threshold (No in step S104), the erase mode is kept off. When the contact area exceeds the threshold (Yes in step S104), the erase mode is turned on (step S105). Even if the contact area is equal to or smaller than the threshold value, if the erase mode is on (Yes in step S104), the erase mode remains on (step S105).

  When the erase mode is off, a line along the movement locus of the touch position is drawn on the display unit 21 of the touch panel 2 (step S106). When the erase mode is on, lines within a predetermined range including the touch position are erased from the display unit 21 (step S107).

  When the touch on the touch panel 2 is released (Yes in step S108), the erase mode is turned off (step S109), and the state immediately after the initial setting is restored. When the touch on the touch panel 2 continues (No in step S108), the contact area is read (step S103). In this way, an infinite loop occurs while the input processing program is operating.

  As described above, when the touch panel 2 is touched in the operation of the input processing program, the erase mode is turned off if the contact area is equal to or smaller than the threshold value. If the touch area exceeds the threshold when the touch panel 2 is touched, the erase mode is turned on from the point of touch. If the contact area exceeds the threshold when the touch is continued, the erase mode is turned on from that point.

  In the present embodiment, when the touch is continued, even if the touch is not released and the contact area becomes equal to or smaller than the threshold value, the erase mode is not turned off. Since the contact area due to the touch of a finger or the like constantly fluctuates, once the erase mode is turned on, the erase mode remains on until the touch is released even if the contact area falls below the threshold, This prevents the erase mode from being turned on and off in an unstable manner.

  As described above, according to the touch panel input device 1 and the input processing program according to the present embodiment, the erase mode for erasing the line is turned on while the touch panel 2 is touched, and the erase mode is turned off. Since it is performed only by releasing the touch, the erase mode can be switched on / off quickly with fewer operations than touching the icon.

  When the erase mode is on, even if the contact area is equal to or smaller than the threshold value, the erase mode remains on until the touch is released, thereby preventing an unstable on / off change of the erase mode.

(Second Embodiment)
A touch panel input device 1 and an input processing program according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7 while using FIG. The same code | symbol is attached | subjected to the location equivalent to 1st Embodiment. In the following description, detailed description of portions equivalent to those of the first embodiment is omitted. The touch panel input device 1 of the present embodiment has a configuration similar to that of the first embodiment (see FIG. 1). In the touch panel input device 1, the detected touch state includes a touch position and a pressing force to be touched. This pressing force is a force with which the touch panel 2 is pressed by a touch, and is a physical quantity of the product of the pressure and the contact area. In the present embodiment, the touch panel input device 1 that can detect a pressing force to be touched is used.

  As shown in FIG. 6, in this embodiment, as a condition for turning on the erasing mode, a pressing force with which the touch panel 2 is touched is used instead of the contact area in the first embodiment. When the detected pressing force exceeds a predetermined threshold (event e21), the processing unit 3 turns on the erasing mode (state S1). When the touch on the touch panel 2 is released, the processing unit 3 turns off the erase mode (state S0) (event e2).

  As shown in FIG. 7, in this embodiment, when the touch panel 2 is touched (Yes in step S202) in the operation of the input processing program, the pressing force is read (step S203). When the pressing force is less than or equal to the threshold value (No in step S204), the erase mode is kept off. When the pressing force exceeds the threshold value (Yes in step S204), the erase mode is turned on (step S205). Even if the pressing force is less than or equal to the threshold value, if the erase mode is on (Yes in step S204), the erase mode remains on (step S205).

  When the erase mode is OFF, a line along the movement locus of the touch position is drawn on the display unit 21 of the touch panel 2 (step S206). When the erase mode is on, lines within a predetermined range including the touch position are erased from the display unit 21 (step S207).

  When the touch on the touch panel 2 is released (Yes in step S208), the erase mode is turned off (step S209), and the state immediately after the initial setting is restored. When the touch on the touch panel 2 continues (No in step S208), the pressing force is read (step S203). In this way, an infinite loop occurs while the input processing program is operating.

  In the second embodiment, as in the first embodiment, when the touch is continued, even if the touch is not released and the pressing force is equal to or lower than the threshold value, the erase mode is not turned off. Since the pressing force due to the touch of a finger, etc. always fluctuates, once the erasing mode is turned on, even if the pressing force falls below the threshold, the erasing mode remains on until the touch is released, This prevents the erase mode from being turned on and off in an unstable manner.

  As described above, according to the touch panel input device 1 and the input processing program of the present embodiment according to the second embodiment, the same effects as those of the first embodiment can be obtained.

  In addition, this invention is not restricted to the structure of said embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention. For example, the touch panel input device 1 is not limited to an input device of a tablet terminal, and may be used for a personal computer, an electronic blackboard, a mobile phone, a mobile game machine, or the like. The touch panel input device 1 may be used to display a handwritten memo on a tablet terminal or the like, or may be used as a means for inputting character data to the tablet terminal or the like. Further, the means for touching the touch panel 2 is not limited to a finger, and may be, for example, a rod-shaped one having a flexible tip.

1 Touch Panel Input Device 2 Touch Panel 21 Display Unit 22 Sensor 3 Processing Unit L Line P Touch Position R Predetermined Range

Claims (4)

A touch panel input device comprising: a touch panel having a display unit and a sensor for detecting a touch state; and a processing unit for drawing an image on the display unit based on the touch state,
The touch state to be detected includes a touch position and a touch area to be touched,
The processing unit has an erase mode,
When the contact area exceeds a predetermined threshold, turn on the erase mode,
When the touch on the touch panel is released, the erase mode is turned off,
If the erasing mode is off when the touch panel is touched, a line along the movement locus of the touch position is drawn on the display unit,
A touch panel input device that erases a line within a predetermined range including the touch position from the display unit when the erase mode is on. A touch panel input device comprising: a touch panel having a display unit and a sensor for detecting a touch state; and a processing unit for drawing an image on the display unit based on the touch state,
The touch state to be detected includes a touch position and a pressing force to be touched,
The processing unit has an erase mode,
When the pressing force exceeds a predetermined threshold, turn on the erase mode,
When the touch on the touch panel is released, the erase mode is turned off,
If the erasing mode is off when the touch panel is touched, a line along the movement locus of the touch position is drawn on the display unit,
A touch panel input device that erases a line within a predetermined range including the touch position from the display unit when the erase mode is on. An input processing program executed by a touch panel input device including a display unit and a touch panel having a sensor for detecting a touch state, and a processing unit for drawing an image on the display unit based on the touch state,
The touch state to be detected includes a touch position and a touch area to be touched,
The processing unit has an erase mode,
When the contact area exceeds a predetermined threshold, turn on the erase mode,
When the touch on the touch panel is released, the erase mode is turned off,
If the erasing mode is off when the touch panel is touched, a line along the movement locus of the touch position is drawn on the display unit,
An input processing program for executing a process of erasing a line within a predetermined range including the touch position from the display unit when the erase mode is on. An input processing program executed by a touch panel input device including a display unit and a touch panel having a sensor for detecting a touch state, and a processing unit for drawing an image on the display unit based on the touch state,
The touch state to be detected includes a touch position and a pressing force to be touched,
The processing unit has an erase mode,
When the pressing force exceeds a predetermined threshold, turn on the erase mode,
When the touch on the touch panel is released, the erase mode is turned off,
If the erasing mode is off when the touch panel is touched, a line along the movement locus of the touch position is drawn on the display unit,
An input processing program for executing a process of erasing a line within a predetermined range including the touch position from the display unit when the erase mode is on.

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