JP2005234958A - Touch panel device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a wrong input resulted from visual field slippage of a touch panel. <P>SOLUTION: An operating position is detected on a display screen for displaying an input screen including an operation button, and the display area of the operation button in the input screen is compared with a threshold to determine whether it is a large operation button or a small operation button. The tendency of slippage of the operating position to an operation button display position is detected on an input screen displaying large operation buttons, and the operation detection area of each operation button is set on an input screen displaying small operation buttons according to the tendency of slippage of the operating position. It is detected within the operation detecting area of which operation button the operating position is detected on the input screen displaying small operation buttons to determine the operated operation button. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a touch panel device that inputs various kinds of information to an electronic device by touching an arbitrary operation button of operation buttons displayed on an input panel surface with a finger or a pencil.

  In order to prevent erroneous input due to the visual field shift of the touch panel, the shift of the operation position with respect to the operation button is detected in the first touch operation, and the detection area is changed according to the detected shift and the second and subsequent operations are performed. There is known a touch panel device for detection (see, for example, Patent Document 1).

Prior art documents related to the invention of this application include the following.
Japanese Patent Laid-Open No. 08-278848

  However, in the conventional touch panel device described above, when the interval between adjacent operation buttons is narrow, it is impossible to clearly determine which operation button is to be operated, and the detection area is changed in the opposite direction. It may end up.

  An operation position is detected on a display screen that displays an input screen including operation buttons, and the display area of the operation buttons on the input screen is compared with a threshold value to determine whether the operation button is a large operation button or a small operation button. Then, a tendency of a shift in the operation position with respect to the display position of the operation button is detected on the input screen on which the large operation button is displayed, and each tendency is determined on the input screen on which the small operation button is displayed. An operation detection area of the operation button is set, and the operation button operated is identified by detecting which operation button is included in the operation detection area of the operation button on the input screen on which the small operation buttons are displayed.

  According to the present invention, it is possible to prevent erroneous input due to a visual field shift of the touch panel.

  FIG. 1 shows the configuration of an embodiment. The display 1 with a touch panel displays an input screen for inputting various information by touching the touch panel with a finger, for example, a menu screen, a 50 sound input screen, a telephone number input screen, a multi-selection list screen, and the like. A touch panel is provided on the surface of the display 1, and a transparent film electrode 2 and a glass electrode 3 are laminated on the touch panel surface. When the touch panel surface of the display 1 is touched with a finger or a pencil, the film electrode 2 is pressed to come into contact with the glass electrode 3, and the X-axis coordinate and Y-axis coordinate potentials (voltages) of the contact point on the glass electrode 3 are film electrodes. 2, the position of the contact point, that is, the touched position (hereinafter referred to as the operation position) is detected.

  The controller 4 includes a CPU 4a, a memory 4b, an operation position detection circuit 4c, an image generation circuit 4d, and the like, and performs image display control of the display 1 with a touch panel and information input control from the touch panel. As described above, the operation position detection circuit 4c detects the touch position by detecting the voltage on the glass electrode 3 at the contact point between the film electrode 2 and the glass electrode 3. The image generation circuit 4d displays on the display 1 input screens such as a menu screen, a 50 sound input screen, a telephone number input screen, and a multi-selection list screen. Connected to the controller 4 is an accessory switch 5 that closes when an ignition key (not shown) is set to the accessory position ACC.

  2-6 shows the example of the hierarchical input screen displayed on the display 1 with a touch panel. FIG. 2 shows a matrix-type menu screen that is often used for input screens in the initial level up to two levels. This example shows a menu screen for selecting a destination setting method, and input buttons are arranged in 2 rows and 4 columns. FIG. 3 shows a normal list menu screen that is often used for an input screen of an initial level up to two levels. When the vehicle occupant touches the operation button “from the facility” on the menu screen shown in FIG. 2, the operation position detection circuit 4c detects the operation of the “from facility” button, and the various facilities shown in FIG. The list menu screen is displayed.

  FIG. 4 shows a 50-sound input screen used for input screens in the third and subsequent layers. When the passenger touches the operation button (not shown) “from 50 sounds” on the list menu screen shown in FIG. 3, the operation position detection circuit 4c detects the operation of the “from 50 sounds” button. Is displayed. FIG. 5 shows a telephone number input screen used for input screens in the third and subsequent layers. When the occupant touches the operation button “From phone number” on the menu screen shown in FIG. 2 or the list menu screen shown in FIG. 3, the operation of the “From phone number” button is detected by the operation position detection circuit 4 c. The telephone number input screen shown in FIG. 5 is displayed. FIG. 6 shows a multi-function selection menu screen used for input screens in the third and subsequent layers. In this menu screen, in order to search for prefecture names arranged in the order of the Japanese syllabary, first select the 50 syllabary names from "A" line to "Wa" line to narrow down the display group of prefecture names, and then display Select one of the group names of the selected group.

  In this embodiment, the tendency of the occupant's operation position is determined on an input screen having a large area of operation buttons as shown in FIGS. That is, as shown in FIG. 7, the display area of one operation button is divided into a plurality of areas, and the operation position detection circuit 4c frequently operates which area among the plurality of divided areas of the operation buttons. To detect. In the example illustrated in FIG. 7, the “from facility” button illustrated in FIG. 2 is divided into four regions A, B, C, and D, and which region of these divided regions is touched is detected. The operation position is a barycentric position of the pressure distribution detected by the operation position detection circuit 4c as shown in FIG. The controller 4 records the region of the operation position detected from when the accessory switch 5 is turned on until it is turned off in the memory 4b, and determines the tendency of the occupant's operation position.

  A method for determining the occupant's operating tendency will be described. FIG. 9 shows a “detection area” for detecting the operation of the operation button for the “display area” of the operation button displayed on the display 1 with a touch panel. When the operation position of the occupant's operation button detected by the operation position detection circuit 4c is in the same area of the divided areas A to D shown in FIG. 7, for example, the detected operation positions are distributed in the area A. This corresponds to the pattern 5 in which the detection area is shifted to the upper left with respect to the display area, and this operation tendency is referred to as “AA”. Similarly, when the detection operation positions are distributed in the region B, this corresponds to the pattern 2 in which the detection region is shifted to the upper right with respect to the display region, and this tendency is referred to as “BB”. When the detection operation positions are distributed in the region C, this corresponds to the pattern 6 in which the detection region is shifted to the lower left with respect to the display region, and this operation tendency is referred to as “CC”. When the detection operation positions are distributed in the region D, this corresponds to the pattern 3 in which the detection region is shifted to the lower right with respect to the display region, and this operation tendency is referred to as “DD”.

  On the other hand, when the operation position of the operation button of the occupant is in a different area among the divided areas A to D shown in FIG. 7, for example, when the detection operation positions are distributed in areas A and B, the display area Corresponding to the pattern 8 in which the detection area is shifted upward, this operation tendency is referred to as “AB”. Similarly, when the detection operation positions are distributed in regions A and C, this corresponds to the pattern 7 in which the detection region is shifted to the left with respect to the display region, and this operation tendency is referred to as “AC”. When the detection operation positions are distributed in the areas A and D, and when the detection operation positions are distributed in the areas B and C, this operation corresponds to the pattern 1 in which the detection area is located at the center of the display area. The trends are called “AD” and “BC”. When the detection operation positions are distributed in the regions B and D, this corresponds to the pattern 4 in which the detection region is shifted to the right with respect to the display region, and this operation tendency is referred to as “BD”. When the detection operation positions are distributed in the areas C and D, this corresponds to the pattern 9 in which the detection area is shifted downward with respect to the display area, and this operation tendency is referred to as “CD”.

  Patterns 2 and 4 tend to be frequently observed when operating the touch panel display 1 installed on the center console of the vehicle from the driver's seat. There is a tendency to try to push a place close to. When the fingernail is in contact with the touch panel, the actual operation position is as shown in FIGS. 10B and 10C with respect to the target operation position at the center of the operation button shown in FIG. There is a tendency to shift upward. This is because, as shown in FIG. 11, since the pressure is detected at both the position where the fingertip is about to be pressed and the position where the nail is hit, the actually detected operation position is an intermediate position between them. Furthermore, as shown in FIG. 12, the actual operation position is located above the operation button even when pressing with the belly of the finger because of the long nail, or when the sight line position of the occupant is high, that is, the height is high and the eyepoint is above There is a tendency to shift.

  On the other hand, when operating the touch panel with the finger pointing downward as shown in FIG. 13, the pressure is detected at both the position where the fingertip is about to be pressed and the position where the nail is hit, so the operation to be actually detected The position becomes an intermediate position between them, and the actual operation position shifts below the operation button as shown in FIGS. 14B and 14C with respect to the target operation position at the center of the operation button shown in FIG. Tend.

  After determining the tendency of the occupant's operation position on the input screen with a large area of the operation buttons as shown in FIGS. 2 and 3, the input screen with a small area of the operation buttons as shown in FIGS. When the input screen, telephone number input screen, or multi-function selection list screen is displayed, a detection area corresponding to the operation trend pattern is set for each operation button, and the occupant's operation position is detected within that detection area. Then, it is recognized that the operation button in the display area corresponding to the detection area has been operated. For example, when the tendency of the occupant's operation position is determined to be “AA” in the pattern 5 shown in FIG. 9, the operation corresponding to the display area of the pattern 5 is detected when the occupant's operation position is detected within the detection area of the pattern 5. Recognize that the button was operated. As a result, in an input screen having a small operation button area as shown in FIGS. 4 to 6, it is surely recognized that the operation button has been operated even if the actual operation position is deviated from the displayed operation button. can do.

  By the way, as shown in FIG. 15, there are cases where the input screen with the small area of the operation buttons as shown in FIG. 4 to FIG. is there. If there are a normal menu screen and a matrix screen with a large operation button area in the second and subsequent layers, the location where the button is continuously pressed is counted to determine an operation tendency with higher accuracy. In this case, as described above, the divided areas A to D of the operation position are recorded, and the most frequently pressed area and the second most frequently pressed area are set as the operation tendency. However, when the number of operations of the second most pressed region is less than half of the number of operations of the most pressed region, the most frequently pressed region is set as the operation tendency AA, BB, CC, DD. When the number of operations in each area is the same, the newest operation position detection data is prioritized.

  16 and 17 are flowcharts illustrating the touch panel control according to the embodiment. The operation of the embodiment will be described with reference to this flowchart. The CPU 4a of the controller 4 starts this touch panel control when the accessory switch 5 is turned on. In step 1, it is confirmed whether or not the input screen displayed on the display 1 with the touch panel is an input screen for a large operation button. Here, the large operation button is an operation button having an area that can be used to divide the display area of the operation button into a plurality of areas as shown in FIG. A threshold for the display area of the operation button for determining whether or not it is an operation button is set, and if the area of the displayed operation button is equal to or greater than the threshold, the operation button is assumed to be a large operation button. A large operation button is an operation button with a low probability that the operation position is out of the display area and with few erroneous operations.

  If the input screen is not a large operation button, the process proceeds to step 7 to check whether the occupant's operation tendency has already been grasped and one of the operation tendency patterns shown in FIG. 9 has been selected. If any operation tendency pattern has already been selected, the process proceeds to step 8. If no operation tendency pattern has been selected, the process returns to step 1.

  On the other hand, when the input screen of the large operation button is displayed on the display 1, the process proceeds to step 2, and the operation position is detected by the operation position detection circuit 4c. In the subsequent step 3, it is detected which region of the operation button display region is divided into a plurality of regions and the operation position is included. In step 4, the number of operations in the area including the operation position (hereinafter referred to as the operation area) is counted up. In step 5, the shift between the operation position and the operation button display area is determined based on the number of operations for each area. The tendency is determined, and a pattern corresponding to the tendency of the operation deviation of the determination result is selected from the patterns shown in FIG.

  In step 6, an input screen corresponding to the operation button at the detection operation position is displayed on the display 1, and it is confirmed whether or not the input screen displayed in step 7 is an input screen of a small operation button. Here, the small operation button is an operation button having a small area in which it is difficult to divide the display area of the operation button into a plurality of areas as shown in FIG. This is an operation button having an area less than the threshold value of the display area of the operation button for determining whether or not it is a large operation button. If the input screen is not a small operation button, the process returns to step 1 and the above-described processing is repeated for the large operation button input screen. On the other hand, if the input screen is a small operation button, the process proceeds to step 9.

  In step 9, the operation position on the input screen of the small operation button is detected. In the subsequent step 10, an operation detection area for detecting the operation of each operation button is set for each of the small operation buttons on the input screen according to the pattern selected according to the occupant's operation tendency. In step 11, it is determined in which operation detection area the detected operation position is included, and in the subsequent step 12, the operation button operated by the occupant is specified. In step 13, an input screen corresponding to the operation button is displayed on the display 1, or information corresponding to the operation button is input. In step 14, it is confirmed whether or not the accessory switch 5 is turned off. If the accessory switch 5 is turned off, the process is terminated. If the accessory switch 5 is kept on, the process returns to step 1 to repeat the above-described process.

  As described above, according to the embodiment, the operation position is detected on the display screen that displays the input screen including the operation button, and the display area of the operation button on the input screen is compared with the threshold value to perform a large operation. Determine whether the button or small operation button. Then, the tendency (pattern) of the shift of the operation position with respect to the display position of the operation button is detected on the input screen on which the large operation button is displayed, and the shift of the operation position on the input screen on which the small operation button is displayed is detected. Accordingly, the operation detection area of each operation button is set, and the operation button in which the operation position is in the operation detection area on the input screen on which the small operation button is displayed is detected and the operated operation button is specified. I did it. As a result, it is possible to accurately grasp the tendency of the operation position shift on the large operation button input screen, and appropriately detect the operation detection area of each operation button on the input screen of the small operation button according to the accurate operation shift tendency. Can be set. Therefore, it is possible to reliably prevent erroneous input due to the visual field shift of the touch panel.

  Further, according to one embodiment, the display area of the large operation button on the display screen is divided into a plurality of areas, and the shift tendency of the operation position is detected based on the detection frequency of the operation position in each divided area. Therefore, it is possible to accurately detect the tendency of the operation position shift by a simple method.

  The correspondence between the constituent elements of the claims and the constituent elements of the embodiment is as follows. That is, the display 1 with a touch panel is the display means, the film electrode 2, the glass electrode 3 and the operation position detection circuit 4c are the operation position detection means, the CPU 4a of the controller 4 is the operation button determination means, the operation deviation detection means, the area setting means, The operation button specifying means is configured. In addition, unless the characteristic function of this invention is impaired, each component is not limited to the said structure.

  In the above-described embodiment, an example in which a resistive film type touch panel in which the film electrode 2 and the glass electrode 3 are stacked is used as the operation position detection device on the touch panel. It is not limited to the system of the above-described embodiment. For example, a pair of infrared light projectors (LEDs) and light receivers (phototransistors) are arranged in the X-axis direction and Y-axis direction on the touch panel, respectively, so that the infrared light flux is blocked when touching the touch panel with a finger or pencil. An infrared light method for detecting the operation position may also be used. Further, ultrasonic waves may be used instead of infrared light. Or it is good also as a resistive film type touch panel using a conductive polymer film.

  In the above-described embodiment, an example of a touch panel device mounted on a vehicle has been described, but the present invention is not limited to being mounted on a vehicle.

It is a figure which shows the structure of one embodiment. It is a figure which shows the example of a menu screen of a matrix format. It is a figure which shows the example of a normal list menu screen. It is a figure which shows the example of a 50 sound input screen. It is a figure which shows the example of a telephone number input screen. It is a figure which shows the example of a multiple function selection menu screen. It is a figure which shows the division area of the operation button for detecting the operation tendency of an operation button. It is a figure which shows the detection method of the operation position of an operation button. It is a figure which shows the pattern of the shift | offset | difference between the display area of an operation button, and the detection area which detects operation of the operation button. It is a figure for demonstrating the tendency to which an operation position shifts upwards. It is a figure which shows the shift | offset | difference of the operation position by a fingernail. It is a figure which shows the shift | offset | difference of the operation position by a long nail | claw. It is a figure which shows the shift | offset | difference of the operation position by a nail | claw at the time of operating a touch panel with a finger | toe down. It is a figure for demonstrating the tendency to which an operation position shifts below. It is a figure for demonstrating the determination method of the operation tendency in case an input screen is expand | deployed in multiple layers. It is a flowchart which shows the touchscreen control of one Embodiment. It is a flowchart which shows the touchscreen control of one Embodiment following FIG.

Explanation of symbols

1 Display with Touch Panel 2 Film Electrode 3 Glass Electrode 4 Controller 4a CPU
4b Memory 4c Operation position detection circuit 4d Image generation circuit 5 Accessory switch

Claims (2)

Display means for displaying an input screen including operation buttons;
Operation position detecting means for detecting an operation position on a display screen of the display means;
Operation button determination means for comparing the display area of the operation buttons on the input screen with a threshold value to determine whether the operation button is large or small, and
An operation deviation detecting means for detecting a tendency of deviation of the operation position with respect to a display position of the operation button on the input screen on which the large operation button is displayed;
An area setting means for setting an operation detection area of each operation button in accordance with a tendency of deviation of the operation position on the input screen on which the small operation button is displayed;
An operation button specifying means for specifying an operation button operated by detecting which operation button is in the operation detection area on the input screen on which the small operation button is displayed. Touch panel device. The touch panel device according to claim 1,
The operation deviation detection means divides a display area on the display screen of the large operation button into a plurality of areas, and detects a tendency of the operation position deviation based on the detection frequency of the operation position in each divided area. A featured touch panel device.

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