JP2009009261A - Touch panel display device and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a touch panel display device capable of reducing erroneous input operations due to not only visual field deviation but also vibration or acceleration. <P>SOLUTION: The displacement quantity (speed, acceleration, moving direction, angle) of a display part 6 of a touch panel display device 1 are detected by a sensor 2, and a recognition area 4a on a touch panel 4 is corrected by a CPU 8 based on the displacement quality. In this case, the recognition area 4a is corrected so as to be moved by a speed which is slower than the moving speed of the display part 6, or the recognition area 4a is corrected like trapezoidal shape by a speed which is slower than the inclining speed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a touch panel display device and a touch panel control method for operating a device by pressing a display surface on which buttons or the like are displayed with a finger or a pen.

  A touch panel display device has a touch panel overlaid on the surface of a display unit such as an LCD (Liquid Crystal Display) provided in the device, and a position corresponding to a button or icon displayed on the display unit is displayed with a finger or a pen. The device is operated by pressing.

  Such a touch panel display device can be used for various devices because it can perform various operations simply by changing the display on the display unit, and is often used for in-vehicle devices such as car navigation systems and portable devices. (For example, refer to Patent Document 1).

The touch panel device described in Patent Literature 1 sets a detection region based on a user's operation tendency in order to prevent erroneous input due to visual field shift.
JP 2005-234958 A

  In-vehicle devices and portable devices are often installed in places such as vehicles where vibrations are generated or operated without being fixed, and vibrations or vibrations at that time or acceleration applied in the lateral direction during vehicle travel (lateral G) There is a problem that erroneous input to the touch panel display device occurs.

  In the touch panel device described in Patent Document 1, only an erroneous input due to a visual field shift can be solved, and an erroneous input due to vibration or the like cannot be resolved.

  Therefore, an object of the present invention is to provide a touch panel display device that can reduce erroneous input due to vibration, lateral G, and the like as well as a visual field shift in the touch panel display device.

  In order to solve the above-described problem, the touch panel display device according to claim 1 is a transparent touch panel in which a recognition area is provided so as to include the display area, and the display area is superimposed on a surface of a display unit on which the display area is displayed. Position detecting means for detecting a position where the touch panel is pressed, and control means for performing control so as to perform a function corresponding to the display area when the position detected by the position detecting means is the recognition area. In the touch panel display device, a detection unit that detects a displacement amount of the display region, and a detection unit that detects a displacement amount of the display region based on a displacement amount of the display region that is detected by the detection unit. And correction means for correcting the recognition area by moving the center.

  The touch panel control method according to claim 8 detects a pressed position of a transparent touch panel in which a display area is superimposed on a surface of a display unit on which a display area is displayed, and a recognition area is provided so as to include the display area, In the touch panel control method for performing control so as to perform a function corresponding to the display area when the detected position is the recognition area, the displacement amount of the display area is detected, and based on the detected displacement amount of the display area The correction of the recognition area is performed by moving the center of the recognition area so as to follow the locus of the center of the display area.

  Hereinafter, a touch panel display device according to an embodiment of the present invention will be described. In the touch panel display device according to an embodiment of the present invention, the detection unit detects the displacement amount of the display area of the display unit, and the correction unit follows the locus of the center of the display region on the display unit based on the displacement amount. In this way, the recognition area is corrected by moving the center of the recognition area on the touch panel. By doing so, when the display unit, that is, the display area is displaced due to vibration, lateral G, and device inclination, the recognition area is corrected based on the amount of displacement. Incorrect input can be reduced.

  The detecting means detects the moving speed and moving direction of the display area, and the correcting means causes the center of the recognition area to follow the locus of the center of the display area at a speed slower than the moving speed detected by the detecting means. The recognition area may be corrected. By doing so, the recognition area moves slower than the display area, so that correction in accordance with the reaction speed of the user can be performed. Therefore, erroneous input due to vibration, lateral G, and visual field deviation can be reduced.

  Further, the detecting means detects the acceleration of the display area, and the correcting means is based on the acceleration of the display area detected by the detecting means, and the outer edge of the recognition area on the moving direction side and the outer edge on the opposite side of the moving direction. You may correct | amend so that the moving speed may differ. In this way, the position of the outer edge of the recognition region, that is, the shape of the recognition region can be changed by the acceleration of the display region, and correction that more matches the reaction speed of the user can be performed. Therefore, erroneous input due to vibration, lateral G, and visual field deviation can be reduced.

  Further, the detection unit may detect the inclination of the display area with respect to a predetermined reference position, and the correction unit may correct the recognition area into a trapezoidal shape based on the inclination of the display area detected by the detection unit. In this way, the recognition area can be corrected according to the inclination of the display area, and in particular, erroneous input due to visual field shift can be reduced.

  And a time detecting means for detecting a time from when the detecting means detects the displacement amount of the display area until the recognition area is operated, and an accumulating means for accumulating the time detected by the time detecting means. The means may change the speed at which the recognition area follows based on the time accumulated in the accumulation means. By doing in this way, since a user's reaction rate can be updated sequentially, the correction | amendment suitable for the updated reaction rate can be performed. Therefore, erroneous input due to vibration, lateral G, and visual field deviation can be reduced.

  Further, the correcting means may calculate the position of the outer edge portion of the recognition area based on an average value within a unit time in at least one of the moving speed, the moving direction, and the acceleration. In this way, since the average value of the movement speed, movement direction, and acceleration within the unit time is used as the displacement amount, the recognition area changes frequently even if the movement speed, movement direction, and acceleration change sequentially. The recognition area can be moved at such a speed that the user can input without passing, and the recognition area can be corrected with few erroneous inputs.

  The detection unit may detect at least one of vibration, acceleration, and inclination applied to the display unit from the outside. By doing so, it is possible to detect the amount of displacement (movement speed, direction of movement, acceleration and inclination) due to externally applied vibration, acceleration and inclination, and based on the amount of displacement, the correcting means detects the recognition area. Correction can be performed.

  The touch panel control method according to an embodiment of the present invention detects the amount of displacement of the display area of the display unit, and based on the amount of displacement, the center of the recognition area so as to follow the locus of the center of the display area on the touch panel. The recognition area is corrected by moving. By doing so, when the display unit, that is, the display area is displaced due to vibration, lateral G, or device inclination, the recognition area is corrected based on the amount of displacement. Incorrect input can be reduced.

  An embodiment of the present invention will be described with reference to FIGS. A touch panel display device 1 according to an embodiment of the present invention includes a sensor 2, a sensor control unit 3, a touch panel 4, a touch panel control unit 5, a display unit 6, a display control unit 7, and a CPU 8. ing. The touch panel display device 1 is mounted on an in-vehicle device or a portable device, and performs various operations by operating buttons and icons displayed on the display unit 6.

  The sensor 2 as a detection means is configured by an acceleration sensor, a gyro sensor (gyroscope), and the like, detects vibrations and shakes applied to the touch panel display device 1 from the outside, and changes in the inclination (angle) of the device, and the change amount (displacement amount). ) Output the speed, acceleration, moving direction and angle. The sensor 2 may be composed of a plurality of types of sensors as well as one type of sensor. In addition, if the sensor 2 is mounted on a vehicle, the vehicle does not include a dedicated component or the like, and vehicle information such as vibration information for vehicle control, such as a suspension acquired by various control devices in the vehicle, and vehicle body tilt information. Information may be input.

  The sensor control unit 3 converts the information output from the sensor 2 into a format to be processed by the CPU 8 and outputs it to the CPU 8.

  The touch panel 4 is a well-known resistive film type, and includes a pair of electrode plates, an upper electrode plate and a lower electrode plate, which are formed on a transparent film or the like on the surface of the display unit 6 and formed with a resistive film having linear characteristics on the surface. It is arranged with a predetermined gap between spacers and the like, and is pressed with a finger or the like to output a voltage corresponding to the coordinate position where the upper electrode plate and the lower electrode plate are in contact.

  The touch panel control unit 5 serving as a position detection unit converts the voltage output from the touch panel 4 into XY coordinate information and outputs the information to the CPU 8. Here, the X coordinate indicates the horizontal direction of the touch panel 4 when the device is installed, and the Y coordinate indicates the vertical direction orthogonal to the X axis.

  The display unit 6 is configured by an LCD or the like, and displays various information, operation buttons, icons, and the like in the in-vehicle device and the portable device.

  The display control unit 7 converts the data to be displayed on the display unit 6 output from the CPU 8 into a format for display on the display unit 6 and outputs the data to the display unit 6.

  The CPU 8 as a control means, a correction means, a time detection means, and a storage means is a microprocessor with a built-in memory and the like, and corresponds to a button assigned to the coordinate position based on the coordinate information output from the touch panel control unit 5. Execute the function to perform. If the information displayed on the display unit 6 is changed, the display data is output to the display control unit 7. For example, if it is determined that the position of a button or the like for switching the display has been pressed, the data to be switched is read from the memory or an external storage device (not shown) and output to the display unit 6 via the display control unit 7.

  Next, the operation of the touch panel display device 1 according to the present invention will be described. First, it is assumed that the button 6a is displayed on the display unit 6 as shown in FIG. In this case, an area larger than the button 6a including the area of the button 6a is set on the touch panel 4 as the recognition area 4a. The recognition area 4a is an area (recognition area) where it is determined that the button 6a is pressed when the area is pressed.

  In FIG. 2, when the button 6 a displayed on the display unit 6 is moved downward in the figure as shown in FIG. 3 due to vibration applied to the touch panel display device 1, conventionally, the recognition area 4 a is also moved simultaneously. Resulting in. At this time, even if the user tries to operate the button 6a, there is a time lag until the human recognizes that the button 6a has moved due to vibration, so that the user tries to touch the position before the movement, resulting in an operation error, that is, an erroneous input. End up.

  Therefore, as shown in FIG. 4, by moving the recognition area 4a at a slower speed than the button 6a is moved by vibration or the like, the recognition area 4a can be corrected according to the reaction speed of the user, and an operation error can be made. Can be reduced. That is, the correction of the recognition area 4a means that the coordinate position of the recognition area 4a is moved or changed in accordance with the button 6a. In detail, since the touch panel 4 moves together with the display unit 6 as the entire touch panel display device 1, the recognition area 4a on the touch panel 4 corresponds to the coordinate position so as to follow the apparent button 6a according to the movement amount. Is moved or changed. That is, the recognition area is corrected so that the center of the recognition area follows the locus of the center of the display area at a speed slower than the moving speed detected by the detecting means.

  The slower speed at which the button 6a moves may be controlled to be slower by a predetermined speed than the moving speed of the button 6a. For example, the user touches the touch panel 4 after vibration is generated. The CPU 8 may detect the time until the time is accumulated in the memory in the CPU 8, and the slower speed at which the button 6a moves may be changed based on the accumulated time. Thereby, since the moving speed of the recognition area 4a is sequentially updated, the moving speed of the recognition area 4a becomes more suitable for the reaction speed of the user as it is used. Note that the average value of accumulated time may be used for changing the speed.

  FIG. 5 shows a case where acceleration (lateral G) is applied in the lateral direction of, for example, an in-vehicle device. Also in this case, the recognition area 4a can be corrected in accordance with the user's reaction speed by moving the recognition area 4a at a slower speed than the movement of the button 6a, as in FIG. can do. Further, not only in the vertical direction and the horizontal direction, but also in the case where the button 6a (display unit 6) is moved in an oblique direction by a combination of the vibration direction and the vibration and the horizontal G, the same correction can be performed.

  Further, as shown in FIG. 6, when the acceleration changes during the movement of the button 6a and the button 6a moves fast, the outer edge 4a1 on the moving direction side of the button 6a in the recognition area 4a extends to the area of the button 6a. The outer edge 4a2 on the opposite side of the moving direction of the button 6a is moved at a slower speed than the button 6a moves, so that the button 6a is removed from the recognition area 4a. The recognition area 4a can be corrected in accordance with the response speed of the user. That is, based on the acceleration of the display area, correction is performed so that the movement speeds of the outer edge part on the movement direction side of the recognition area and the outer edge part on the opposite side to the movement direction are different.

  When the center of the button 6a moves as shown by the arrow in FIG. 7, the recognition area 4a may temporarily take a shape different from that of the button 6a as shown in FIG. 7 depending on changes in speed or acceleration. .

  The recognition area 4a may be corrected based on an average value within a predetermined unit time instead of being corrected in response to changes in the moving speed, moving direction, acceleration, and the like from the sensor 2. . That is, even if the sensor 2 detects high-frequency vibration and the recognition area 4a moves following the vibration, the user may not respond to the movement. Therefore, the recognition area is based on the average value within the unit time. By calculating the position of 4a, the recognition area 4a can move at a speed that can be input by the user.

  Further, when the tilt (angle) of the touch panel display device 1 changes, for example, when the touch panel display device 1 is tilted so as to approach a horizontal state from a state perpendicular to the ground as a reference position, as shown in FIG. In addition, correction is performed so that the recognition area 4a gradually becomes a trapezoid. The speed of correction that gradually becomes a trapezoid may be changed according to the speed at which the angle changes. That is, when tilted fast, correction is performed at a speed slower than the tilted speed. Of course, not only when tilted horizontally, but also when tilted rightward or leftward, the outer edge portion opposite to the tilted side is corrected so as to be the long side of the trapezoid.

  Details of the above-described operation will be described with reference to the flowchart shown in FIG. This flowchart is executed by the CPU 8.

  First, in step S1, it is determined whether the sensor 2 has detected vibration or the like. If it is detected (YES), the process proceeds to step S2, and if not (NO), the process proceeds to step S3.

  Next, in step S2, the recognition area 4a is corrected and the process proceeds to step S3. As described above, this correction is performed based on the speed, acceleration, moving direction, angle, and the like associated with vibration or posture change.

  Next, in step S3, it is determined whether or not there is an input on the touch panel 4. If there is an input, the process proceeds to step S4, and if there is no input, the process returns to step S1. Whether or not there is an input on the touch panel 4 is determined based on whether or not input coordinates are input from the touch panel control unit 5.

  Next, in step S4, it is determined which button or icon is pressed from the input coordinates input in step S3, the function is selected, and the process proceeds to step S5. That is, a function such as a button corresponding to the recognition area 4a that matches the input coordinates is selected.

  Next, in step S5, the function selected in step S4 is executed, and the process returns to step S1.

  According to the present embodiment, the displacement amount (speed, acceleration, moving direction) of the touch panel display device 1, that is, the display unit 6 is detected by the sensor 2, and the recognition area on the touch panel 4 is detected by the CPU 8 based on the displacement amount. 4a is corrected. At this time, since the recognition area 4a is corrected so as to move at a speed slower than the moving speed of the display unit 6, the recognition area 4a can be corrected in accordance with the reaction speed of the user, and operation errors are reduced. be able to. Therefore, not only a visual field shift but also an erroneous input due to vibration or acceleration can be reduced.

  Further, based on the change in acceleration of the display unit 6, the recognition area 4a is corrected so that the movement speed of the outer edge part 4a1 on the movement direction side and the outer edge part 4a2 on the opposite side to the movement direction are different. It is possible to change the position of the outer edge of 4a, that is, the shape of the recognition area 4a, and to perform correction more suited to the reaction speed of the user.

  In addition, since the sensor 2 detects the tilt (angle) of the display unit 6 and corrects the recognition area 4a to a trapezoidal shape at a speed slower than the tilting speed based on the tilt, the user's reaction even when the device is tilted. The recognition area 4a can be corrected in accordance with the speed, and operation errors can be reduced.

  In the above-described embodiment, the vibration and the change in the angle are described separately. However, when the change in the angle and the vibration occur at the same time, the correction described above is performed in combination.

  Moreover, although the touch panel 4 mentioned above demonstrated by the resistive film system, you may use the touch panel of other systems, such as not only that but an infrared system, an analog capacitive coupling system, and an ultrasonic system.

  According to the embodiment described above, the following touch panel display device 1 is obtained.

(Additional remark 1) The touch panel control which detects the position where this touch panel 4 was pressed, and the transparent touch panel 4 on which the recognition area 4a is provided so that the button 6a may be overlapped on the surface of the display part 6 where the button 6a is displayed. In the touch panel display device 1 including the unit 5 and the CPU 8 that controls to perform the function corresponding to the button 6a when the position detected by the touch panel control unit 5 is the recognition area 4a,
A sensor 2 for detecting the displacement of the button 6a;
CPU 8 for correcting the recognition area 4a by moving the center of the recognition area 4a so as to follow the locus of the center of the button 6a based on the displacement amount of the button 6a detected by the sensor 2;
A touch panel display device 1 comprising:

  According to the touch panel display device 1, when the display unit 6, that is, the button 6 a is displaced due to vibration, acceleration, or device inclination, the recognition area 4 a is corrected based on the displacement amount. It is possible to reduce erroneous input due to visual field shift.

(Supplementary Note 2) The pressed position of the transparent touch panel 4 on which the recognition area 4a is provided so as to include the button 6a is detected on the surface of the display unit 6 where the button 6a is displayed, and the detected position is the recognition area. In the touch panel control method for controlling to perform the function corresponding to the button 6a in the case of 4a,
Detecting the displacement of the button 6a,
A touch panel control method comprising: correcting the recognition area 4a by moving the center of the recognition area 4a so as to follow the locus of the center of the button 6a based on the detected displacement amount of the button 6a.

  According to this touch panel control method, when the display unit 6, that is, the button 6 a is displaced due to vibration, acceleration, device inclination, or the like, the recognition area 4 a is corrected based on the displacement amount. It is possible to reduce erroneous input due to deviation.

  In addition, the Example mentioned above only showed the typical form of this invention, and this invention is not limited to an Example. That is, various modifications can be made without departing from the scope of the present invention.

1 is a block diagram of a touch panel display device according to an embodiment of the present invention. It is explanatory drawing of the button and recognition area of the touchscreen display apparatus shown by FIG. It is explanatory drawing of the recognition area when a button moves by the conventional vibration. It is explanatory drawing of the recognition area when a button moves by the vibration of this invention. It is explanatory drawing of the recognition area when a button moves by the vibration of this invention. It is explanatory drawing of the recognition area when an acceleration changes when a button moves by the vibration of this invention. It is explanatory drawing of the recognition area at the time of moving to a some direction in a short time. It is explanatory drawing of the recognition area in the case of the change of the attitude | position (inclination) of this invention. 4 is a flowchart illustrating an operation of the touch panel display device according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Touch panel display device 2 Sensor (detection means)
4 Touch panel 4a Recognition area (recognition area)
6 Display 6a Button (Display area)
8 CPU

Claims (8)

A transparent touch panel in which a recognition area is provided so as to include the display area, the position detection means for detecting a position where the touch panel is pressed, and the position detection means. In a touch panel display device comprising: a control unit that performs control so as to perform a function corresponding to the display region when the position detected by is a recognition region;
Detecting means for detecting a displacement amount of the display area;
Correction means for correcting the recognition area by moving the center of the recognition area so as to follow the locus of the center of the display area based on the displacement amount of the display area detected by the detection means;
A touch panel display device comprising: The detecting means detects a moving speed and a moving direction of the display area;
The correction means corrects the recognition area so that the center of the recognition area follows the locus of the center of the display area at a speed slower than the movement speed detected by the detection means. The touch panel display device described in 1. The detecting means detects acceleration of the display area;
The correction means corrects the movement speed of the outer edge portion on the movement direction side of the recognition area and the outer edge portion on the opposite side to the movement direction based on the acceleration of the display area detected by the detection means. The touch panel display device according to claim 1 or 2. The detecting means detects an inclination of the display area with respect to a predetermined reference position;
4. The touch panel display device according to claim 1, wherein the correction unit corrects the recognition region into a trapezoidal shape based on a tilt of the display region detected by the detection unit. 5. . Time detection means for detecting a time from when the detection means detects a displacement amount of the display area to when the recognition area is operated;
Accumulating means for accumulating the time detected by the time detecting means,
5. The touch panel display device according to claim 1, wherein the correction unit changes a speed at which the recognition area follows based on a time accumulated in the accumulation unit.   6. The correction unit calculates a position of an outer edge portion of the recognition area based on an average value within a unit time in at least any one of a moving speed, a moving direction, and an acceleration. The touch panel display device according to any one of the above.   The touch panel display device according to claim 1, wherein the detection unit detects at least one of vibration, acceleration, and tilt applied to the display unit from the outside. A pressed position of a transparent touch panel that is overlapped on the surface of the display unit on which the display area is displayed and includes the display area is detected, and when the detected position is the recognition area, In the touch panel control method for controlling to perform the function corresponding to the display area,
Detecting the displacement of the display area;
A touch panel control method, comprising: correcting the recognition area by moving the center of the recognition area so as to follow a locus of the center of the display area based on the detected displacement amount of the display area.

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