JP2013045398A - Touch panel device and touch range correction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a touch position for touch operation appropriately even when pressure by water pressure or the like is applied to a touch panel.SOLUTION: A touch panel operation part 120 detects a pressing range which is pressed. A pressure detection part 130 detects water pressure applied to the touch panel operation part 120. A range correction control unit 101 corrects the pressing range detected in the touch panel operation part 120 when water pressure is detected by the pressure detection part 130. An operation control unit 102 performs processing based on the pressing range corrected in the range correction control unit 101.

Description

  The present invention relates to a touch panel device and a touch range correction method for appropriately detecting a touch position for a touch operation even when pressure such as water pressure is applied to the touch panel.

  In recent years, in a small terminal device such as a portable media player or a smartphone, a device in which a touch panel is applied to a display unit has become widespread. In addition, there are products having waterproof performance in such devices, and there are also products that are assumed to be used in water.

  In products that perform touch operations in water, it is common to use a resistive touch panel. However, in recent years, there are touch panels that can perform multi-touch by dividing the touch range into multiple sections even with resistive touch panels. is there.

JP 2008-210199 A

  When a product using a touch panel capable of multi-touch is used in water, a wide range is pressed by water pressure in addition to a portion pressed by the user for operation.

  The technique of Patent Document 1 ensures waterproofness by sticking a decorative film on the upper surface of the resistive touch panel body.

  The present invention has been made in view of such problems, and provides a touch panel device and a touch range correction method that appropriately detect a touch position for a touch operation even when pressure due to water pressure or the like is applied to the touch panel. With the goal.

  In order to achieve the above object, a touch panel device (10) according to the first invention includes a touch panel operation unit (120) that detects a pressed range of pressure, and a pressure that detects a water pressure applied to the touch panel operation unit (120). When the water pressure is detected by the detection unit (130) and the pressure detection unit (130), a range correction control unit (101) for correcting the pressing range detected by the touch panel operation unit (120), the range An operation control unit (102) that executes processing based on the pressing range corrected by the correction control unit (101) is provided.

  In the touch panel device (10) according to the second invention, in the first invention, the range correction control unit (101) sets the pressing range according to a water pressure value detected by the pressure detection unit (130). It is characterized by correcting.

  In the touch panel device (10) according to a third aspect of the present invention, in the first or second aspect of the invention, the range correction control unit (101) is configured so that the touch range detected by the touch panel operation unit (120) The correction is performed such that the pressing range is narrowed from the outer peripheral portion of the pressing range.

  The touch panel device (10) according to a fourth aspect of the present invention is the touch panel device (10) according to any one of the first to third aspects, wherein the range correction control unit (101) is responsive to the water pressure detected by the pressure detection unit (130). Then, correction is performed to invalidate a predetermined range in the pressing range detected by the touch panel operation unit (120).

  The touch panel device (10) according to a fifth aspect of the present invention is the touch panel device (10) according to any one of the first to fourth aspects, wherein the range correction control unit (101) is detected by the touch panel operation unit (120). On the other hand, the correction amount is changed according to the position of the pressing range in the touch panel operation unit (120).

  In the touch range correction method according to the sixth aspect of the present invention, it is determined that the water pressure is detected by the pressure detection step of detecting the water pressure applied to the touch panel operation unit (120) for detecting the pressed pressure range, and the pressure detection step. If there is, a range correction step for correcting the press range detected in the touch panel operation unit (120), and an operation control step for executing a process based on the press range corrected in the range correction step. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, even if the pressure by water pressure etc. is applied to the touch panel, it is possible to detect the touch position for touch operation appropriately.

1 is a configuration block diagram of a touch panel device according to an embodiment of the present invention. 1 is an external perspective view of a touch panel device according to an embodiment of the present invention. It is a section conceptual diagram centering on the display part and touch panel operation part of the touch panel device concerning the example of the present invention. 1 is a conceptual cross-sectional view centering on a display unit and a touch panel operation unit of a touch panel device according to an embodiment of the present invention, and shows a state where the pressure is applied by water pressure P. FIG. It is the conceptual diagram which showed the operation range in the touchscreen operation part which concerns on the Example of this invention. It is a conceptual diagram which shows the division which detected the touch in the touchscreen operation part which concerns on the Example of this invention. It is a conceptual diagram which shows the division which detected the touch in the touchscreen operation part which concerns on the Example of this invention. It is a conceptual diagram which shows the state which correct | amended the area which detected the touch in the touchscreen operation part which concerns on the Example of this invention. 4 is a flowchart illustrating an operation of the touch panel device according to the embodiment of the present invention. 4 is a flowchart illustrating an operation of the touch panel device according to the embodiment of the present invention. 4 is a flowchart illustrating an operation of the touch panel device according to the embodiment of the present invention. 4 is a flowchart illustrating an operation of the touch panel device according to the embodiment of the present invention. It is an example of the correction table which correct | amends the division which detected the touch in the touchscreen apparatus which concerns on the Example of this invention. It is a conceptual diagram which shows the state which correct | amended the area which detected the touch in the touchscreen operation part which concerns on the Example of this invention.

  Hereinafter, a touch panel device 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

  The touch panel device 10 is a portable device that can be operated using a touch panel provided in the device, such as a mobile phone such as a smartphone, a portable media device, a portable navigation device (PND), a digital camera, or the like. Various devices are applicable.

  The touch panel device 10 includes a control unit 100, a display unit 110, a touch panel operation unit 120, and a pressure detection unit 130.

  The control unit 100 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a DSP (Digital Signal Processor), and the like, and controls each part of the touch panel device 10. In addition, various data and files handled by the touch panel device 10 are processed.

  The CPU in the control unit 100 controls each unit by executing various programs stored in the ROM on the RAM based on operation signals and data from each unit of the touch panel device 10, and processes various data.

  The display unit 110 includes, for example, a liquid crystal display element, an organic EL (Electro Luminescence) display element, and the like, and displays various types of information by processing of the control unit 100. Further, the operation icon 80 is displayed at a position corresponding to the operation range 82 in the touch panel operation unit 120 by the processing of the control unit 100.

  The touch panel operation unit 120 transmits coordinate information detected by detecting the coordinates of the touch section 42 pressed by the user to the control unit 100. Further, the touch panel operation unit 120 is a resistive film type touch panel that can detect presses on the plurality of touch sections 42 and further detects presses on the touch panel operation unit 120.

  The pressure detection unit 130 detects a pressure such as a water pressure applied to the touch panel device 10, and sends the presence / absence of the water pressure detection or the detected value of the water pressure to the control unit 100. The pressure detection unit 130 is configured by a water pressure sensor or the like, for example. In addition to the water pressure sensor, the pressure detection unit 130 may detect a pressure such as a water pressure based on a pressed state of the touch panel operation unit 120, for example. The detection of the water pressure by the pressed state of the touch panel operation unit 120 obtains an approximate value of the water pressure based on, for example, the number and range of the touch detection sections 44 in which the press is detected with respect to the touch section 42 pressed by the user.

  The control unit 100 includes a range correction control unit 101 and an operation control unit 102 as functional units corresponding to the processing content in the control unit 100.

  The range correction control unit 101 performs control to correct the touch range detected when the touch panel operation unit 120 is pressed according to the pressure such as water pressure detected by the pressure detection unit 130.

  The operation control unit 102 performs processing for executing various operations based on the touch range detected when the touch panel operation unit 120 is pressed.

  In addition to the components described above, the touch panel device 10 shoots a storage unit (not shown) and an interface unit for exchanging information with other devices, an operation unit for inputting an operation instruction by mechanical operation, a still image and a moving image. An imaging unit or the like is provided as necessary.

  An external perspective view of the touch panel device 10 shown in FIG. 2 will be described. FIG. 2 shows a form as an example of the touch panel device 10, and the touch panel device 10 in the present invention is not limited to such a form. On one surface of the touch panel device 10, there is a display unit 110 and a touch panel operation unit 120 arranged so as to overlap the display unit 110.

  On the display unit 110, an operation icon 80 for instructing an operation of the touch panel device 10 is displayed. As an example of the operation icon 80, as shown in FIG. 2, a “Music” icon for reproducing music data, a “Video” icon for reproducing moving image data or photographing a moving image, reproducing still image data, or photographing a still image. The “Photo” icon for performing the operation, the “Web” icon for starting the Web browser and displaying the Web data, the “Mail” icon for transmitting / receiving the e-mail, and the “Radio” icon for receiving the radio broadcast are displayed. The operation icon 80 is not limited to the above, and an icon corresponding to a function or application provided in the touch panel device 10 is displayed. Further, the number, position, and size of the operation icons 80 displayed on the display unit 110 are not limited.

  Next, a state where a pressure such as water pressure is applied to the touch panel device 10 from the outside will be described with reference to a cross-sectional conceptual diagram of the touch panel device 10. FIG. 3 is a conceptual cross-sectional view in a state where no pressure such as water pressure is applied to the touch panel device 10, and FIG. 4 is a conceptual cross-sectional view in a state where the water pressure P is applied to the touch panel device 10.

  4 and 5, the housing 20 is a member constituting the main body of the touch panel device 10 and is formed of reinforced plastic, aluminum, or the like.

  In the touch panel device 10, the display unit 110, the touch panel operation unit 120, and the protection panel 60 are held by the housing 20, and a gap 50 is formed between the touch panel operation unit 120 and the protection panel 60.

  The protective panel 60 is made of, for example, a transparent resin material such as PET (Polyethylene Terephthalate). The protective panel 60 ensures visibility from the outside of the display unit 110 and can press the touch panel operation unit 120 by bending under pressure. Made of various materials. Further, the protection panel 60 is held together with the housing 20 so as to ensure waterproof performance, and the protection panel 60 and the housing 20 are bonded by a waterproof tape or the like (not shown).

  As shown in FIG. 4, when the touch panel device 10 is in water, for example, the casing 20 hardly bends due to the application of the water pressure P, and the protection panel 60 presses the touch panel operation unit 120 from the center by the water pressure P.

  Next, a structure when the touch panel operation unit 120 is a resistive multi-touch type touch panel will be described with reference to FIGS. The resistive film type multi-touch type touch panel operation unit 120 includes a plurality of conductive films arranged in the vertical direction and the horizontal direction, and a plurality of conductive films facing each other are virtually formed as one resistive film type touch panel. Detect a touch at a location. In FIG. 5, each resistive film type touch panel formed by facing each conductive film is shown as a touch section 42.

  In each touch section 42, the position of one pressing point can be recognized. The touch panel operation unit 120 in FIG. 5 is illustrated as a touch panel operation unit 120 having a 13 × 17 touch section 42 as an example. In the touch panel operation unit 120, an operation range 82 corresponding to the display position of the operation icon 80 as shown in FIG. 2 is set. When it is detected that the touch section 42 belonging to the predetermined operation range 82 is pressed, the operation range 82 is processed as an operation icon 80 corresponding to the predetermined operation range 82.

  FIG. 6 shows a case where the touch section 42 corresponding to the operation range 82 is pressed by a touch operation or the like. In FIG. 6, a touch section 42 marked with a circle is defined as a touch detection section 44 as the pressed touch section 42. In this case, since the touch detection section 44 belongs to the operation range 82, processing associated with the operation range 82 located at the upper center in FIG. 6 is executed.

  When the touch panel operation unit 120 as described above is used in water, for example, water pressure P is applied to the entire touch panel device 10 as shown in FIG. Since the protective panel 60 bends when the water pressure P is applied, in addition to the touch section 42 pressed by the user as shown in FIG. 7, the surrounding touch section 42 is also pressed.

  FIG. 7A shows that the control section 100 recognizes a touch section 42 in the vicinity of the touch section 42 pressed by the user as a touch detection section 44. FIG. 7B shows an example in which the water is used at a deeper depth than that in FIG. 7A, and the touch section 42 in a wide range is recognized by the control unit 100 as the touch detection section 44 due to the water pressure P stronger than that in FIG. It has been shown.

  Next, as shown in FIG. 7, when the touch section 42 in the range of the touch section 42 or more pressed by the user by the application of water pressure is detected as the touch detection section 44, the detected touch detection section 44 is subjected to range correction control. An example corrected by the unit 101 is shown in FIG.

  FIG. 8A and FIG. 8B are examples in which the touch detection section 44 detected in FIG. 7A and FIG. 7B is corrected by the control of the range correction control unit 101.

  In FIG. 8, a touch section 44 marked with ● is a touch detection invalid section 45 in which a press is detected as the touch detection section 44 and correction that is invalidated by the control of the range correction control unit 101 is performed. For this reason, in FIG. 8, processing based on the touch detection section 44 excluding the touch detection invalid section 45 is executed. In the example in which the operation icon 80 shown in FIG. 2 is displayed, the process based on the operation of the “Video” icon is executed as the process based on the touch detection section 44 corrected as shown in FIG.

  As described above, when the touch section 42 in a range wider than the touch section 42 pressed by the user due to the water pressure P is recognized as the touch detection section 44, the periphery of the range in which the press is detected by the control of the range correction control unit 101 is invalidated. By performing the correction, the touch section 42 in the same or close range as the touch section 42 pressed by the user is recognized as the touch detection section 44, and processing based on the corrected touch detection section 44 is executed.

  For this reason, at the time of operation of the touch panel device 10 in water, it is possible to accurately recognize the pressing operation by the user and to prevent malfunction or the like.

  Next, the correction process for the touch detection section 44 described above will be described with reference to FIGS.

  First, in FIG. 9, the operation control unit 102 determines whether or not a touch operation on the touch panel operation unit 120 is performed (step S100). In this process, it is determined that a touch operation is being performed when a pressure is detected on any of the touch sections 42.

  When it is determined in step S100 that no touch operation has been detected (step S100: No), the touch panel device 10 continuously confirms the presence or absence of the touch operation by repeating the process of step S100 again.

  When it is determined in step S100 that a touch operation has been detected (step S100: Yes), the control unit 100 determines whether the water pressure P is detected by the pressure detection unit 130 (step S101).

  When it is determined in step S101 that the water pressure P has not been detected (step S101: No), the operation control unit 102 performs a predetermined process based on the touch detection section in the touch operation detected in step S100.

  When it is determined in step S101 that the water pressure P has been detected (step S101: Yes), the range correction control unit 101 corrects the range of the touch detection section 44 according to the water pressure detected in step S101 ( Step S102).

  After the touch detection section 44 is corrected in step S102, the operation control unit 102 executes processing based on the corrected touch detection section 44 (step S103).

  FIG. 10 is a flowchart in the process of step S102 described above. In the correction of the touch detection section 44 in step S102, first, the range correction control unit 101 extracts the touch detection section that becomes the center in the range of the touch detection section 44 (step S110).

  Next, only the touch detection section 44 that is the center extracted in step S110 is corrected as the touch detection section 44 that has been touched (step S111).

  Through such processing, the touch detection section 44 that is the center of the touch detection section 44 is corrected to be the touch detection section 44 that has been touched. As a touch detection section, a touch operation with no erroneous operation can be performed.

  FIG. 11 is a flowchart in another correction process of the touch detection section 44 in step S102 described above. In the correction of the touch detection section 44 in step S102, first, the range correction control unit 101 performs correction for setting the outermost touch detection section 44 in the range of the touch detection section 44 as the touch detection invalid section 45 (step S120).

  The correction of the touch detection section 44 as the touch detection invalid section 45 in step S120 does not recognize, for example, the touch detection section 44 corresponding to the outermost periphery as the touch detection section 44 with respect to the plurality of recognized touch detection sections 44. Corrections are made by performing processing.

  After correcting the outermost touch detection section 44 as the touch detection invalid section 45 in step S120, the range correction control unit 101 continuously includes a predetermined number or more of touch detection sections 44 that are not corrected by the correction in step S120. It is determined whether or not there is (step S121).

  The process of step S121 determines whether there are a predetermined number or more, such as five or three or more touch detection sections 44 adjacent to each other.

  If it is determined in step S121 that a predetermined number or more exists (step S121: No), the process of step S120 is executed again. When it is determined in step S121 that there are no more than the predetermined number (step S121: Yes), the user has pressed by recognizing the touch detection section 44 recognized at that time as the touch section 42 that has been touch-operated. A touch detection section 44 that is the same as or substantially the same as the touch section can be obtained.

  FIG. 12 is a flowchart of still another correction process for the touch detection section 44 in step S102 described above. First, the range correction control unit 101 acquires the water pressure value acquired by the control unit 100 based on the value output from the pressure detection unit 130. (Step S130). Next, the range correction control unit 101 performs correction using the correction table shown in FIG. 13 based on the water pressure value acquired in step S130.

  As an example of correction using the correction table in FIG. 13, correction is not performed when the water pressure detected by the pressure detection unit 130 is, for example, water pressure at a depth of less than 5 m. Similarly, when the water pressure is at a depth of 5 m or more and less than 10 m, the touch detection invalid section 45 is corrected as one section from the outermost periphery in the touch detection section 44. In this example, the correction is as shown in FIG.

  Similarly, when the water pressure is at a depth of 10 m or more and less than 15 m, the touch detection invalid section 45 is corrected for two sections from the outermost periphery in the touch detection section 44. In this example, the correction is as shown in FIG. Similarly, when the water pressure is at a depth of 15 m or more and less than 20 m, correction is performed with the touch detection invalid section 45 as three sections from the outermost periphery in the touch detection section 44. Further, when the water pressure is 20 m or more, correction is performed so that all the touch detection sections 44 are the touch detection invalid sections 45. This is because the touch section 42 pressed by the user cannot be specified because the protective panel 60 is greatly bent by a high water pressure.

  The correction table shown in FIG. 13 is an example, and can take an appropriate value depending on the area of the touch panel operation unit 120, the number of sections of the touch section 42, the material and thickness of the protective panel 60, and the like.

  Further, the correction processing by the range correction control unit 101 in the embodiment of the present invention has been described on the assumption that the touch detection section 44 pressed by the user exists in the center of the touch detection section 44 by the water pressure P. However, actually, the operation icon 80 is also displayed on the end of the display unit 110. Such an operation icon 80 is not pressed by water pressure as much as the touch section 42 closer to the end due to the presence of the housing 20 forming the gap 50.

  FIG. 14 shows an example of correction processing when the operation icon 80 displayed at a position near the end of the display unit 110 is operated.

  FIG. 14A shows a case where the operation icon 80 located in the upper center portion of the display unit 110 is pressed. The correction processing by the range correction control unit 101 at this time is a touch located at the left and right ends in the left-right direction. The detection section 44 is corrected to be the touch detection invalid section 45, and the touch detection section 44 located in the direction opposite to the upper end of the display unit 110 is corrected to be the touch detection invalid section 45 in the vertical direction.

  FIG. 14B shows a case where the operation icon 80 located at the upper left part of the display unit 110 is pressed. The correction processing by the range correction control unit 101 at this time is the left end part of the display unit 110 in the left-right direction. The touch detection section 44 positioned in the opposite direction is corrected to be the touch detection invalid section 45, and the touch detection section 44 positioned in the opposite direction to the upper end of the display unit 110 is defined as the touch detection invalid section 45 in the vertical direction. Make corrections.

  Further, when the position of the touch detection section 44 is close to the end of the display unit 110, the range of the touch detection section 44 to be the touch detection invalid section 45 may be narrowed or reduced by the range correction control unit 101. . Specifically, when the position of the touch detection section 44 is close to the center of the display unit 110, a wide range is pressed by the water pressure P, so that the touch detection is set as the touch invalid detection section 45 by the range correction control unit 101. Set many partitions. In addition, when the position of the touch detection section 44 is close to the end of the display unit, the range pressed by the water pressure P is limited. Set less.

  10: Touch panel device, 20: Housing, 42: Touch section, 44: Touch detection section, 45: Touch detection invalid section, 50: Gap, 60: Protection panel, 80: Operation icon, 82: Operation range, 100: Control Unit: 101: range correction control unit, 102: operation control unit, 110: display unit, 120: touch panel operation unit, 130: pressure detection unit

Claims (6)

A touch panel operation unit for detecting a pressed range,
A pressure detection unit for detecting water pressure applied to the touch panel operation unit;
When water pressure is detected by the pressure detection unit, a range correction control unit that corrects the pressing range detected in the touch panel operation unit,
An operation control unit for executing processing based on the pressing range corrected in the range correction control unit;
A touch panel device comprising: The range correction control unit corrects the pressing range according to a water pressure value detected by the pressure detection unit,
The touch panel device according to claim 1. The range correction control unit corrects the press range detected by the touch panel operation unit so as to narrow the press range from an outer peripheral portion of the press range.
The touch panel device according to claim 1. The range correction control unit performs correction to invalidate a predetermined range in the pressing range detected in the touch panel operation unit according to the water pressure detected by the pressure detection unit,
The touch panel device according to any one of claims 1 to 3. The range correction control unit is configured to change a correction amount according to a position of the press range in the touch panel operation unit with respect to the press range detected in the touch panel operation unit.
The touch panel device according to any one of claims 1 to 4. A pressure detecting step for detecting a water pressure applied to the touch panel operation unit for detecting a pressed pressing range;
If it is determined that the water pressure is detected by the pressure detection step, a range correction step for correcting the pressing range detected in the touch panel operation unit,
An operation control step for executing processing based on the pressing range corrected in the range correction step;
A touch range correction method comprising:

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