JP5423279B2 - User interface device - Google Patents

Description

  The present invention relates to a user interface device having a touch panel.

  In recent years, a touch panel is adopted as a user interface device in a small information terminal such as a PDA. By adopting a touch panel, the user can intuitively operate the terminal simply by touching the screen. Also, this type of user interface device is more portable than employing user interface components that occupy space such as a keyboard and touchpad.

  Thus, the merit of the small information terminal is that it can be used even when the vehicle is being boarded. However, there is a problem that the user may touch the unintended position because the position indicated by the vehicle shakes.

  In addition, an in-vehicle information terminal that displays an enlarged operation area of the touch panel in accordance with the vibration amount / vibration direction of the host vehicle has been proposed (see, for example, Patent Document 1). However, in Patent Document 1, since a predetermined operation button on the touch panel is enlarged and displayed depending on the presence or absence of vibration, there is a problem that the maximum amount of information that can be visually recognized cannot be displayed when the automobile is vibrating.

JP 2007-190947 A JP 2007-219676 A

  As described above, the conventional user interface device using a touch panel has a problem that the user's designated position fluctuates in a vibration environment and touches an unintended position.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a user interface device capable of suppressing erroneous touches even in a vibration environment.

  In order to achieve the above object, a user interface device according to the present invention has a display unit that displays given display information with a specified center position as a center, and selects a display content of the display unit. A touch panel for generating plane coordinate information of the indicator from a relative three-dimensional position of the indicator for giving, sensing the selection by contact of the indicator, an acceleration sensor for measuring an acceleration of the housing, and Display control for calculating the center position and designating the display unit by performing a low-pass filter operation using the first filter coefficient calculated based on the acceleration with respect to the plane coordinate information. Part.

  In the user interface device having the above configuration, the center position is calculated after performing the low-pass filter operation on the plane coordinates (x, y) of the indicator. Thereby, the reaction of the process of trying to follow the center position to the position designated by the user becomes dull. That is, even if the indicator vibrates due to the vibration of the user interface device, the vibration at the center position can be suppressed to a small level.

  According to the present invention, it is possible to provide a user interface device capable of suppressing erroneous touches even in a vibration environment.

It is a block diagram which shows the function structure of the user interface apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the function structure of the display control part of FIG. It is a block diagram which shows the function structure of the x-LPF part of FIG. It is a figure which shows the transition in the time domain of the user instruction | indication coordinate ux and the center position ox calculated by the x-LPF part of FIG. It is a block diagram which shows the function structure of the z-LPF part of FIG. It is a figure which shows the relationship between the magnification rate r and the correction Z coordinate oz at the time of calculating the magnification rate r in the magnification rate calculating part of FIG. It is the figure which showed z1 (pz) and z2 (pz) with respect to z-LPF coefficient pz from the z-LPF coefficient calculation part of FIG. It is the figure which showed r1 (pz) with respect to z-LPF coefficient pz from the z-LPF coefficient calculation part of FIG. It is a figure which shows the example of a display of the display part of FIG. It is a figure which shows the example of a display at the time of moving the center position in FIG. 9 based on a user instruction | indication position. It is a block diagram which shows the modification of the function structure of the z-LPF part of FIG. It is a block diagram which shows the function structure of the user interface apparatus which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows the function structure of the display control part of FIG. It is a block diagram which shows the function structure of the x-LPF part of FIG.

  Hereinafter, embodiments of a user interface device according to the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing a functional configuration of a user interface device according to the first embodiment of the present invention. The user interface device in FIG. 1 includes a display unit 11, a touch panel 12, an acceleration sensor 13, and a display control unit 14.

  The display unit 11 displays display information supplied from the outside. At this time, the display unit 11 displays the display information so that the position (ox, oy) (hereinafter referred to as the center position) on the display information designated by the display control unit 14 is the center of the screen display unit. Further, the display unit 11 displays display information at an enlargement ratio r specified by the display control unit 14. The display information includes characters, images, GUI (Graphical User Interface) parts, and the like. Here, the GUI parts refer to icons, menus, buttons, and the like.

  The touch panel 12 is combined with the display unit 11. The touch panel 12 senses the selection of the display content of the display unit 11 by the touch of an indicator.

  The touch panel 12 has a function of grasping the three-dimensional position of the indicator. The touch panel 12 uses the three-dimensional relative position (x, y, z) of the indicator as the relative coordinates from the center position (ox, oy) and Z = 0 as the center of the display unit screen. Output to. Here, the X axis and the Y axis are on the display screen, and the Z axis is positive in the direction away from the screen vertically.

  The acceleration sensor 13 measures the three-dimensional acceleration (ax, ay, az) of the user interface device and outputs the measurement result to the display control unit 14.

  FIG. 2 is a block diagram showing a functional configuration of the display control unit 14 according to the first embodiment of the present invention. The display control unit 14 in FIG. 2 includes an x-LPF (Low-Pass Filter) unit 141, a y-LPF unit 142, a z-LPF unit 143, and a touch position output unit 144.

  The x-LPF unit 141 receives the X coordinate x from the touch panel 12, the acceleration (ax, ay, az) from the acceleration sensor 13, and the enlargement ratio r from the z-LPF unit 143, and creates a center position ox based on these. To do. The x-LPF unit 141 outputs the center position ox to the display unit 11 and the touch position output unit 144.

  The y-LPF unit 142 receives the Y coordinate y from the touch panel 12, the acceleration (ax, ay, az) from the acceleration sensor 13, and the enlargement ratio r from the z-LPF unit 143, and creates the center position oy based on these. To do. The y-LPF unit 142 outputs the center position oy to the display unit 11 and the touch position output unit 144.

  The z-LPF unit 143 receives the Z coordinate z from the touch panel 12 and the acceleration (ax, ay, az) from the acceleration sensor 13. Based on these, the z-LPF unit 143 creates an enlargement ratio r and outputs it to the display unit 11, the x-LPF unit 141, the y-LPF unit 142, and the touch position output unit 144.

  The touch position output unit 144 receives the Z coordinate z from the touch panel 12, the center position ox from the x-LPF unit 141, the center position oy from the y-LPF unit 142, and the enlargement ratio r from the z-LPF unit 143. When the Z coordinate z becomes zero, the touch position output unit 144 assumes that the indicator touches the touch panel 12, and outputs the center position (ox, oy) at that time to the outside as the touch position. An external device (not shown) recognizes the content selected by the user based on the touch position and outputs display information corresponding to the selected content to the display unit 11.

  FIG. 3 is a block diagram showing a functional configuration of the x-LPF unit 141 according to the first embodiment of the present invention. The x-LPF unit 141 in FIG. 3 includes an x-LPF coefficient calculation unit 1411 and an x-LPF calculation unit 1412.

  The x-LPF coefficient calculation unit 1411 calculates the x-LPF coefficient px based on the acceleration (ax, ay, az) from the acceleration sensor 13. Here, in the calculation in the x-LPF coefficient calculation unit 1411, a function that monotonically increases the x-LPF coefficient px is used for any absolute value of the accelerations ax, ay, and az. This function is, for example, the vector length of acceleration (ax, ay, az). That is, the greater the vibration applied to the user interface device, the greater the x-LPF coefficient px. Further, if the function has a large contribution of the X component of acceleration (ax, ay, az), it is possible to obtain an effect that the response becomes dull in the direction of large vibration. Further, if px obtained by multiplying the x-LPF coefficient px by a constant time constant LPF is finally output px, an effect of more stable operation can be obtained. The x-LPF coefficient calculation unit 1411 outputs the x-LPF coefficient px to the x-LPF calculation unit 1412.

  The x-LPF calculation unit 1412 receives the X coordinate x from the touch panel 12, the enlargement ratio r from the z-LPF unit 143, and the x-LPF coefficient px from the x-LPF coefficient calculation unit 1411. The x-LPF calculation unit 1412 includes a memory, and stores the center position ox ′ calculated last time in the memory. The x-LPF calculation unit 1412 sequentially calculates the user instruction coordinates ux based on ux = ox ′ + x / r, using the input X coordinate x, enlargement ratio r, and center position ox ′.

  The x-LPF calculation unit 1412 performs a low-pass filter calculation using the x-LPF coefficient px on the user instruction coordinates ux to calculate a new center position ox. The x-LPF calculation unit 1412 outputs the center position ox to the display unit 11 and the touch position output unit 144.

  Here, when the x-LPF coefficient px increases, the x-LPF calculation unit 1412 decreases the cutoff frequency of the low-pass filter. That is, the x-LPF calculation unit 1412 performs a low-pass filter calculation in which the tracking of the center position ox to the user instruction coordinate ux becomes duller as the vibration applied to the user interface device is larger.

  FIG. 4 is a schematic diagram illustrating an example of the transition of the center position ox and the user instruction coordinates ux in the time domain. In FIG. 4, the solid line indicates the transition of the user instruction coordinate ux, the broken line indicates the transition of the center position ox when the x-LPF coefficient px is small, and the alternate long and short dash line indicates the center position ox when the x-LPF coefficient px is large. Shows the transition.

  Note that the y-LPF unit 142 has the same structure as the x-LPF unit 141 shown in FIG. Therefore, detailed description is omitted here.

  FIG. 5 is a block diagram showing a functional configuration of the z-LPF unit 143 according to the first embodiment of the present invention. The z-LPF unit 143 in FIG. 5 includes a z-LPF coefficient calculation unit 1431, a z-LPF calculation unit 1432, and an enlargement ratio calculation unit 1433.

  The z-LPF coefficient calculation unit 1431 calculates the z-LPF coefficient pz based on the acceleration (ax, ay, az) from the acceleration sensor 13. Here, in the calculation by the z-LPF coefficient calculation unit 1431, a function that monotonically increases the z-LPF coefficient pz is used for any absolute value of the accelerations ax, ay, and az. The z-LPF coefficient calculation unit 1431 outputs the z-LPF coefficient pz to the z-LPF calculation unit 1432 and the enlargement ratio calculation unit 1433.

  The z-LPF calculation unit 1432 receives the Z coordinate z from the touch panel 12 and the z-LPF coefficient pz from the z-LPF coefficient calculation unit 1431. The z-LPF calculation unit 1432 performs a low-pass filter calculation using the z-LPF coefficient pz on the Z coordinate z, and calculates a corrected Z coordinate oz. The z-LPF calculation unit 1432 outputs the corrected Z coordinate oz to the enlargement ratio calculation unit 1433.

  The enlargement ratio calculator 1433 calculates the enlargement ratio r based on the z-LPF coefficient pz from the z-LPF coefficient calculator 1431 and the corrected Z coordinate oz from the z-LPF calculator 1432. The enlargement factor calculation unit 1433 outputs the enlargement factor r to the x-LPF unit 141, the y-LPF unit 142, the touch position output unit 144, and the display unit 11.

  FIG. 6 is a diagram showing a relationship between the enlargement ratio r and the corrected Z coordinate oz when the enlargement ratio calculator 1433 calculates the enlargement ratio r. In FIG. 6, the enlargement ratio r is “r1 (pz)” when the corrected Z coordinate oz is from 0 to z2 (pz), and the corrected Z coordinate oz is between z2 (pz) and z1 (pz). Monotonically approaches “1”. The enlargement ratio r is “1” when the corrected Z coordinate oz is equal to or greater than z1 (pz).

  Here, each parameter z1 (pz), z2 (pz), and r (pz) is a function of the z-LPF coefficient pz, respectively. 7 and 8 are diagrams illustrating an example of the relationship between each parameter and the z-LPF coefficient pz. FIG. 7 is a diagram showing z1 (pz) and z2 (pz) with respect to the z-LPF coefficient pz, and FIG. 8 is a diagram showing r1 (pz) with respect to the z-LPF coefficient pz.

  In FIG. 7, z1 (pz) and z2 (pz) increase as the z-LPF coefficient pz increases. At this time, z1 (pz) and z2 (pz) increase within a range not exceeding the detectable maximum distance zmax. Moreover, it is z1 (pz)> z2 (pz).

  In FIG. 8, r1 (pz) increases as the z-LPF coefficient pz increases. At this time, r1 (pz) is larger than “1” and increases within a range not exceeding the maximum enlargement ratio rmax determined in consideration of operability.

  Next, the operation in the above configuration will be described.

  FIG. 9 is a schematic diagram illustrating a display example of the display unit 11 according to the first embodiment of the present invention. Display information is displayed on the display unit 11. In FIG. 9, it is assumed that the center position (ox, oy) = (10, 10 and enlargement ratio r = 1).

  At this time, it is assumed that the user has moved the indicator to the position indicated by a cross in FIG. The touch panel 12 regards the three-dimensional coordinates indicated by x as the relative position from the center position (10, 10) and Z = 0, and the three-dimensional relative position (x, y, z) = (1, 2.5, 2). Is output to the display control unit 14. The acceleration sensor 13 measures acceleration (ax, ay, az) and outputs it to the display control unit 14.

  The z-LPF unit 143 calculates the z-LPF coefficient pz based on the acceleration (ax, ay, az). The z-LPF unit 143 performs a low-pass filter calculation using the z-LPF coefficient pz for the Z coordinate “2” to calculate a corrected Z coordinate oz. Then, the z-LPF unit 143 calculates the enlargement ratio r from the corrected Z coordinate oz and the z-LPF coefficient pz. In this description, it is assumed that the corrected Z coordinate oz = 3 and the enlargement ratio r = 2 after movement.

  The x-LPF unit 141 uses the X coordinate “1”, the enlargement ratio “1”, and the previously calculated center position ox ′ = 10 stored in the memory, so that the user instruction coordinates ux = ox ′ + x / r = 11 is calculated. Then, the x-LPF unit 141 performs a low-pass filter operation using the x-LPF coefficient px calculated based on the acceleration (ax, ay, az) on the user instruction coordinate “11”, and accompanies the movement. A new center position ox is calculated. In this description, it is assumed that the center position ox after movement is 10.5.

  Based on the Y coordinate “2.5”, the enlargement ratio “1”, and the previously calculated center position oy ′ = 10 stored in the memory, the y-LPF unit 142 uses the user-specified coordinates uy = oy ′ + y / Calculate r = 12.5. Then, the z-LPF unit 142 performs a low-pass filter operation using the y-LPF coefficient py calculated based on the acceleration (ax, ay, az) on the user instruction coordinate “12.5”, and moves A new center position oy associated with is calculated. In this description, it is assumed that the center position after movement is oy = 11.

  As a result, the display content shown in FIG. 9 is enlarged at the enlargement ratio “2” with the new center position (10.5, 11) as the center. FIG. 10 is a schematic diagram showing the display content of the display unit 11 when the center position (10.5, 11) and the enlargement ratio are 2. FIG.

  As described above, in the first embodiment, the x-LPF unit 141 and the y-LPF unit 142 perform the low-pass filter operation on the coordinates (x, y) of the indicator, and then the center position. (Ox, oy) is calculated. Thereby, the reaction of the process of trying to follow the center position (ox, oy) to the position designated by the user becomes dull. Since the tracking of the center position (ox, oy) becomes dull, even if the indicator vibrates, the vibration of the center position (ox, oy) can be suppressed to a small level. That is, even when the user interface device receives vibration, the difference between the position where the touch is recognized and the position intended by the user is reduced.

  In the first embodiment, the x-LPF coefficient px and the y-LPF coefficient py are increased as the vibration increases. As a result, the greater the vibration, the slower the reaction of the process of trying to follow the center position (ox, oy) to the position indicated by the user. For this reason, even when the vibration of the indicator is large, the vibration at the center position (ox, oy) can be kept small. That is, regardless of the magnitude of vibration received by the user interface device, the difference between the position where the touch is recognized and the position intended by the user is reduced.

  Therefore, the user interface device according to the present invention can prevent erroneous recognition of the touch destination due to the trembling of the indicator in a vibration environment. In the present embodiment, in order to avoid erroneous touch recognition, the dead zone area is not provided on the touch panel 12, so that the positions that can be selected do not skip.

  In the first embodiment, the z-LPF unit 143 performs a low-pass filter operation on the Z coordinate z of the indicator, and calculates the corrected Z coordinate oz of the indicator. Then, the z-LPF unit 143 calculates the enlargement ratio r based on the corrected Z coordinate oz. The display unit 11 enlarges and displays the display information according to the enlargement ratio r. As a result, the display information is enlarged and displayed on the user interface device based on the Z coordinate of the pointing object with respect to the touch panel 12.

  Therefore, the user interface device according to the present invention can be used even when the user's finger is thick, when the user operates the device with a nail, or when the pointing object shakes due to the shaking of the user's hand. Recognition can be prevented. Further, erroneous recognition of the touch destination due to the position detection error of the touch panel 12 can also be prevented.

  In the first embodiment, the vibration of the indicator is removed by the LPF process with respect to the Z coordinate z. Thereby, the enlargement ratio does not fluctuate with the vibration of the indicator. Therefore, there is an effect that the fluctuation of the screen display can be suppressed and the eyes are less tired.

  In the first embodiment, the z-LPF coefficient pz is increased as the vibration increases. As a result, the larger the vibration is, the slower the reaction of the process for trying to follow the corrected Z coordinate oz to the position indicated by the user. For this reason, even if the vibration of the indicator is large, the fluctuation of the enlargement factor r can be suppressed small. That is, the fluctuation of the enlargement ratio r is small regardless of the magnitude of vibration that the user interface device receives.

  Therefore, the user interface device according to the present invention makes it easier to see the GUI parts in an environment with large vibrations, and can prevent erroneous touches. Further, in a situation where shaking is small, it is possible to suppress a decrease in the amount of display information at the time of touching while ensuring the visibility of the GUI component and the prevention of erroneous touch.

  The present invention is not limited to the first embodiment.

  For example, in the first embodiment, the display control unit 14 always outputs the center position (ox, oy) to the display unit 11, and the display unit 11 receives the center position (ox, oy) from the display control unit 14. Display information is displayed according to the above, but the display information is not limited to this. The display control unit 14 fixes not only the enlargement ratio r but also the display enlargement center position (ox, oy) after that when the indicator approaches the display to some extent (for example, the corrected Z coordinate oz <z2). When the touch of the pointing object is detected, the display enlargement center position + (ox, oy) / r can be output to the display unit 11 as the position at that time. As a result, the screen display is fixed just before the touch, and there is an effect that a stable screen can be touched.

  In the first embodiment, the example in which the display unit 11 displays the display information in accordance with the center position (ox, oy) from the display control unit 14 has been described. However, the display unit 11 has the center position (ox, oy). The cursor may be displayed at the position of (oy). Thereby, the user interface device can feed back the estimated touch position to the user. In other words, the user of the user interface device can operate the device while grasping the follow-up dullness due to the LPF process. Therefore, there is an effect of preventing erroneous touch more.

  In the first embodiment, the example in which the z-LPF unit 143 has the functional configuration illustrated in FIG. 5 has been described. However, the present invention is not limited to this. For example, the z-LPF unit 143 can be similarly implemented even when it has a functional configuration as shown in FIG. That is, the enlargement factor calculation unit 1434 calculates the enlargement factor r ′ based on the Z coordinate z from the touch panel 12. Then, the z-LPF calculation unit 1435 performs low-pass filter calculation using the z-LPF coefficient pz from the z-LPF coefficient calculation unit 1431 on the enlargement ratio r ′, and calculates the enlargement ratio r. It doesn't matter.

  Further, the touch panel 12 of the user interface device according to the first embodiment may be integrated with a display unit as in the data input device disclosed in Patent Document 2.

  In the first embodiment, the example in which the acceleration sensor 13 is built in the user interface device has been described. However, when the acceleration sensor is built in another part of the conventional information terminal, the acceleration sensor is used. You can share it. In this case, the acceleration sensor is not necessarily built in the user interface device.

  In the first embodiment, the acceleration sensor 13 measures the three-dimensional acceleration and outputs the three-dimensional acceleration to the display control unit 14. However, the acceleration sensor 13 measures the magnitude of the acceleration. Even when this acceleration is output to the display control unit 14, it can be similarly implemented.

  The display control unit 14 can also be realized by additionally mounting the function of the display control unit 14 on a control unit in a conventional information terminal including the display unit.

  Further, the indicator may emit light or the like, and the touch panel 12 may receive the light to grasp the three-dimensional position of the indicator.

  The enlarged display on the display unit 11 may be performed on the entire screen or in a predetermined range near the designated position.

[Second Embodiment]
FIG. 12 is a block diagram showing a functional configuration of a user interface device according to the second embodiment of the present invention. The user interface device in FIG. 12 includes a display unit 21, a touch panel 22, an acceleration sensor 23, and a display control unit 24.

  The display unit 21 displays display information supplied from the outside. At this time, the display unit 21 displays the display information so that the center position (ox, oy) designated by the display control unit 24 is the center.

  The touch panel 22 is combined with the display unit 21. The touch panel 22 senses the selection of the display content of the display unit 21 by the touch of an indicator.

  In addition, the touch panel 22 has a function of grasping the two-dimensional position of an indicator positioned on the touch panel 22. Note that the touch panel 22 can grasp the two-dimensional position even if the pointing object is not in contact. The touch panel 22 outputs the two-dimensional relative position (x, y) of the indicator as relative coordinates from the center position (ox, oy) to the display control unit 24. Further, the touch panel 22 generates a touch detection signal and outputs it to the display control unit 24 when the pointing object comes into contact.

  The acceleration sensor 23 measures the acceleration A of the user interface device and outputs the measurement result to the display control unit 24.

  FIG. 13 is a block diagram showing a functional configuration of the display control unit 24 according to the second embodiment of the present invention. The display control unit 24 in FIG. 13 includes an x-LPF unit 241, a y-LPF unit 242, and a touch position output unit 243.

  The x-LPF unit 241 receives the X coordinate x from the touch panel 22 and the acceleration A from the acceleration sensor 23. Then, the x-LPF unit 241 creates an X component ox at the center position from these, and outputs the X component ox to the display unit 21 and the touch position output unit 243.

  The y-LPF unit 242 receives the Y coordinate y from the touch panel 22 and the acceleration A from the acceleration sensor 23. Then, the y-LPF unit 242 creates a Y component oy at the center position from these, and outputs the Y component oy to the display unit 21 and the touch position output unit 243.

  The touch position output unit 243 receives the touch detection signal from the touch panel 22, the center position ox from the x-LPF unit 241, and the center position oy from the y-LPF unit 242. When receiving the touch panel detection signal, the touch position output unit 144 assumes that the indicator touches the touch panel 22 and outputs the center position (ox, oy) at that time to the outside as the touch position.

  FIG. 14 is a block diagram illustrating a functional configuration of the x-LPF unit 241 according to the second embodiment of the present invention. The x-LPF unit 241 in FIG. 14 includes an x-LPF coefficient calculation unit 2411 and an x-LPF calculation unit 2412.

  The x-LPF coefficient calculation unit 2411 calculates the x-LPF coefficient px based on the acceleration A from the acceleration sensor 23. Here, in the calculation in the x-LPF coefficient calculation unit 2411, a function that monotonously increases the x-LPF coefficient px with respect to the acceleration A is used. That is, the greater the vibration applied to the user interface device, the greater the x-LPF coefficient px. Further, if px obtained by multiplying the x-LPF coefficient px by a constant time constant LPF is finally output px, an effect of more stable operation can be obtained. The x-LPF coefficient calculation unit 2411 outputs the x-LPF coefficient px to the x-LPF calculation unit 2412.

  The x-LPF calculation unit 2412 receives the X coordinate x from the touch panel 22 and the x-LPF coefficient px from the x-LPF coefficient calculation unit 2411. The x-LPF calculation unit 2412 performs a low-pass filter calculation using the x-LPF coefficient px on the X coordinate x, and calculates the center position ox. The x-LPF calculation unit 2412 outputs the center position ox to the display unit 21 and the touch position output unit 243.

  Note that the x-LPF calculation unit 2412 lowers the cutoff frequency of the low-pass filter as the x-LPF coefficient px increases. That is, the x-LPF calculation unit 2412 performs a low-pass filter calculation with less follow-up of the center position ox to the coordinate x as the vibration applied to the user interface device is larger.

  Note that the y-LPF unit 242 has the same structure as the x-LPF unit 241 shown in FIG. Therefore, detailed description is omitted here.

  As described above, in the second embodiment, the z-LPF unit 143 does not exist as compared with the first embodiment. Even in this case, the user interface device performs the low-pass filter calculation by the x-LPF unit 241 and the y-LPF unit 242, so that the center position (ox, oy) can be obtained even if the indicator vibrates. Vibration is kept small. That is, even when the user interface device receives vibration, the difference between the position where the touch is recognized and the position intended by the user is reduced. That is, it is possible to prevent erroneous recognition of the touch destination. According to this, it is possible to reduce the manufacturing cost of the user interface device having the function of preventing erroneous recognition of the touch destination.

  Note that the present invention is not limited to the above embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 11 ... Display part 12 ... Touch panel 13 ... Acceleration sensor 14 ... Display control part 141 ... x-LPF part 1411 ... x-LPF coefficient calculation part 1412 ... x-LPF calculating part 142 ... y-LPF part 143 ... z-LPF part 1431 ... z-LPF coefficient calculation units 1432, 1435 ... z-LPF calculation units 1433, 1434 ... magnification factor calculation unit 144 ... touch position output unit 21 ... display unit 22 ... touch panel 23 ... acceleration sensor 24 ... display control unit 241 ... x- LPF unit 2411 ... x-LPF coefficient calculation unit 2412 ... x-LPF calculation unit 242 ... y-LPF unit 243 ... touch position output unit

Claims (7)

A display unit that displays given display information with a specified center position as a center, and the indicator from a relative three-dimensional position of the indicator for giving selection to the display content of the display unit; A touch panel for generating the plane coordinate information and sensing the selection by contact of the indicator,
An acceleration sensor for measuring the acceleration of the housing;
The center position is calculated by performing a low-pass filter operation using the first filter coefficient calculated based on the acceleration with respect to the plane coordinate information, and the display designated for the display unit A control unit ,
The touch panel further generates vertical coordinate information of the indicator from the three-dimensional position of the indicator with respect to the touch panel,
The display control unit obtains correction information obtained by correcting the vertical coordinate information by performing a low-pass filter operation using a second filter coefficient calculated based on the acceleration on the vertical coordinate information. Calculating, calculating an enlargement ratio of the display content based on the correction information, and outputting to the display unit,
The user interface device , wherein the display unit displays the display information in an enlarged manner with the enlargement ratio centered on the center position . The enlargement factor is the first enlargement factor when the coordinate value of the correction information is greater than the first coordinate value, and is greater than the second coordinate value where the coordinate value of the correction information is less than the first coordinate value. the user interface device when small claim 1, characterized in that the said first magnification rate is larger than the second magnification. 3. The user interface device according to claim 2, wherein the first coordinate value and the second coordinate value change according to a change in the second filter coefficient. The second magnification, the user interface device according to claim 2 or 3, characterized in that changes according to a change of the second filter coefficients. The user interface device according to claim 1, wherein the first filter coefficient increases when the acceleration increases. Said first and second filter coefficients, when the acceleration is increased, the user interface device of claim 1, wherein the increase. Wherein the display unit, a user interface device according to claim 1, characterized in that the display cursor to the center position.

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