JP2012118575A - Input device, on-vehicle apparatus having the same and control method of input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input device capable of preventing operation unintended by a user caused by erroneous input of pressing operation affected by vibration or a shock or the like, and to provide an on-vehicle apparatus having the input device and a control method of the input device.SOLUTION: When vibration amount G applied on an input device 20 and detected by an acceleration sensor 8, within a predetermined period before and after a point of time when an operation state of a touch panel 4 or a push button 5 changes, is equal to or above a predetermined value defined beforehand, a control part 10 performs control so as to cancel the change of the operation state of the touch panel 4 or the push button 5 and maintain an initial operation state.

Description

  The present invention relates to an input device that performs an operation by being pressed, such as a touch panel or a push button, an in-vehicle device including the input device, and a control method for the input device.

  Many in-vehicle devices such as a car navigation device and a car air conditioner include an input device that receives an operation by pressing (pressing) a touch panel or a push button.

  Such an in-vehicle device has a problem that an erroneous input to the input device occurs due to vibration or impact generated by the vehicle.

  More specifically, for example, on an in-vehicle device touch panel or a push button, an input method for operating a function different from that for a short time by keeping the button pressed for a predetermined period of time, so-called long press is performed on a plurality of buttons. Since functions are assigned, it is often used for in-vehicle devices that cannot arrange many buttons. Here, if a finger or the like is released due to vibration or impact during this long press operation, it is not determined as a long press and is recognized as a short press (short press), resulting in an unintended operation by the user. There was a problem of being done. In addition, in a touch panel, a push button, etc., there is a problem that an operation that is not intended by the user is performed if the user intends to press the button once but accidentally presses it twice or more due to vibration or shock.

  For example, a pointing device described in Patent Document 1 has been proposed as an input device that reduces the influence of vibration and shock of an in-vehicle device. The pointing device described in Patent Document 1 detects rotational angular velocities in the vertical direction and the horizontal direction by a motion measurement sensor provided in a mouse, and these signals are input to a movement amount calculation unit of the main body. The movement amount calculation unit calculates the vertical movement amount and the horizontal movement amount of the operator's hand based on the signal from the motion measurement sensor, and based on the output signal of the movement measurement sensor provided in the main body. Calculate the amount of left and right movement of the car, and further calculate the difference between the amount of left and right movement of the operator's hand and the movement of the left and right direction of the car. The cursor on the display is moved by a distance corresponding to the amount of movement of the operator's hand.

JP-A-8-185254

  However, although the pointing device of Patent Document 1 can correct the amount of movement of the mouse in accordance with vibration or impact, an error in the click operation of the mouse due to vibration or impact, that is, from the mouse button during the drag operation. No consideration is given to erroneous operations such as a finger separating or a click becoming a double click. Therefore, it is impossible to solve the problem that the long press is erroneously short-pressed due to the above-described vibration or impact, or the problem that the single press is erroneously double-pressed.

  Therefore, the present invention provides an input device that can prevent an unintended operation of a user due to an erroneous input of a pressing operation due to the influence of vibration or impact, an in-vehicle device including the input device, and a control method for the input device. Is an issue.

  In order to solve the above-mentioned problem, an input device according to claim 1 includes: an input unit that is pressed; and a control unit that performs a process assigned to the input unit according to an operation state of the input unit. The input device includes: vibration detection means for detecting vibration applied to the input device; and change detection means for detecting a change in an operation state of the input means, wherein the change detection means is an operation state of the input means. If the vibration detected by the vibration detection means is greater than or equal to a predetermined value when the change is detected, the control means changes the operation state of the input means detected by the change detection means. And the control is performed so that the operation state immediately before the vibration is detected is maintained.

  5. The input device control method according to claim 4, wherein in the input device control method for performing processing assigned to the input unit in accordance with an operation state of the input unit to be pressed, vibration applied to the input unit is detected. A vibration detecting step, a change detecting step for detecting a change in the operating state of the input means, and the vibration detected by the vibration detecting step when the change detecting step detects a change in the operating state of the input means. A control step for controlling so as to invalidate the detected change in the operation state of the input means and maintain the operation state immediately before the vibration is detected when the value is equal to or greater than a predetermined value. It is characterized by that.

1 is an external perspective view of a car navigation device including an input device according to a first embodiment of the present invention. FIG. 2 is a block diagram of the car navigation device shown in FIG. 1. It is the flowchart which showed input operation of the car navigation apparatus shown by FIG. It is the flowchart which showed input operation of operation | movement of the car navigation apparatus provided with the input device concerning 2nd Example of this invention.

  Hereinafter, an input device according to an embodiment of the present invention will be described. In the input device according to the embodiment of the present invention, when the change detection unit detects a change in the operation state of the input unit, the vibration applied to the input device detected by the vibration detection unit is equal to or greater than a predetermined value. In this case, the control means controls to invalidate the change in the operation state of the input means detected by the change detection means and maintain the operation state immediately before the vibration is detected. When a vibration or impact is applied, even if the finger is removed due to the influence of the vibration or impact, it is possible to invalidate those operations. Can be prevented.

  In addition, when the input unit is configured with a touch panel, and includes a storage unit that stores a coordinate position where the touch panel is pressed, and the vibration detection unit detects vibration when the change detection unit detects a change in coordinate information. The control unit may read the coordinate position stored in the storage unit immediately before detecting the vibration, and may control the read coordinate position as being pressed. By doing this, when the touch panel is operated, the user's unintended operation due to an erroneous operation such as a finger or the like being displaced due to vibration or impact and erroneously operating an adjacent button on the touch panel is prevented. can do.

  Moreover, you may provide the input device mentioned above in vehicle equipment. By doing in this way, in-vehicle equipment, the operation which a user does not intend by the erroneous operation by a vibration or an impact can be prevented.

  The input device control method according to an embodiment of the present invention provides a predetermined predetermined vibration applied to the input means detected by the vibration detection process when the change detection process detects a change in the operation state of the input means. If the value is greater than or equal to the value, control is performed so that the change in the operation state of the input means detected in the control process is invalidated and the operation state immediately before the vibration is detected is maintained. When a vibration or impact is applied, even if the finger is removed due to the influence or it is accidentally pressed, those operations can be invalidated, preventing unintended operations by the user due to erroneous operations. can do.

  A first embodiment of the present invention will be described with reference to FIGS. The input device 20 according to the first embodiment of the present invention is provided in the car navigation device 1 as an in-vehicle device. The car navigation device 1 is installed on the instrument panel of the vehicle and displays a route to a preset destination for guidance.

  As shown in FIGS. 1 and 2, the car navigation apparatus 1 includes a housing 2, a display unit 3, a touch panel 4, a push button 5, a touch panel detection unit 6, a button detection unit 7, and an acceleration sensor. 8, an acceleration detection unit 9, a control unit 10, a navigation unit 11, and a recording medium recording / playback unit 12.

  The casing 2 is formed in a box shape as shown in FIG. 1, and a touch panel 4 (display unit 3) is provided on a surface 2a facing the user when the casing 2 is installed on the instrument panel of the vehicle. . And the housing | casing 2 accommodates each component of the car navigation apparatus 1 shown in FIG.

  The display unit 3 is configured by a liquid crystal display or the like, and displays map information, guidance information, operation buttons, icons, and the like in the car navigation device 1.

  The touch panel 4 as an input means is, for example, a well-known resistive film method, which is configured as a transparent film that is superimposed on the surface of the display unit 3 and has an upper electrode plate on which a resistive film having linear characteristics is formed. Similarly, a pair of electrode plates of the lower electrode plate on which a resistance film is formed are arranged with a predetermined gap between spacers and the coordinate position where the upper electrode plate and the lower electrode plate are in contact with each other by pressing with a finger or the like The voltage corresponding to is output. Note that the touch panel 4 is not limited to the resistive film method, and may be another method such as a capacitance method or an ultrasonic method. Note that pressing in this specification includes not only pressing (pressing) but also touching (contacting) when operating the touch panel 4 or the like.

  The push button 5 is composed of five push buttons 5a to 5e, and is an input means to which an operation different from that of the touch panel 4 is assigned, and is provided below the surface 2a of the housing 2 facing the user. ing.

  The touch panel detection unit 6 converts the voltage corresponding to the coordinate position detected by the touch panel 4 into XY coordinate information (hereinafter simply referred to as coordinate information), and the converted coordinate information is controlled as a detection result of the touch panel 4. To the unit 10. Here, the X coordinate indicates the horizontal coordinate of the touch panel 4 when the device is installed, and the Y coordinate indicates the vertical coordinate orthogonal to the horizontal direction.

  The button detection unit 7 detects whether or not each of the buttons 5 a to 5 e has been pressed, and outputs information (ON information) indicating ON for each button to the control unit 10.

  The acceleration sensor 8 serving as a vibration detection unit detects vibration or impact applied from the outside to the car navigation device 1, that is, an input device 20 described later, and outputs it to the acceleration detection unit 9 as an electrical signal. In the present embodiment, the acceleration sensor 8 is used as the vibration detection means. However, it is needless to say that the acceleration sensor 8 is not limited to the acceleration sensor 8 as long as it can detect vibrations and shocks. You may use the sensor which can detect the vibration, the impact, etc. which are provided in this.

  The acceleration detection unit 9 outputs the electrical signal detected by the acceleration sensor 8 to the control unit 10 as a change amount (vibration amount G) such as vibration or impact applied to the input means from the outside. In addition, the acceleration sensor 8 and the acceleration detection part 9 may be comprised integrally.

  The control unit 10 serving as a control unit and a change detection unit includes a RAM 10a and is based on processing corresponding to a button or the like displayed on the display unit 3 of the coordinate position based on the coordinate information output from the touch panel detection unit 6. An instruction is given to the display unit 3, the navigation unit 11, and the recording medium recording / reproducing unit 12. Further, based on the ON information of the push button 5 output from the button detection unit 7, an instruction based on the process corresponding to the pressed push button 5 is given to the display unit 3, the navigation unit 11, and the recording medium recording / playback unit 12. . The RAM 10 a temporarily stores coordinate information, ON information, vibration amount G, and the like acquired from the touch panel detection unit 6, button detection unit 7, and acceleration detection unit 9, and is used for processing in the control unit 10.

  Further, the control unit 10 detects the coordinate information output from the touch panel detection unit 6, the on-information of the push button 5 output from the button detection unit 7, and the vibration or impact applied from the outside to the input means output from the acceleration detection unit 9. Based on the vibration amount G that is a value, processing for invalidating an operation performed on the touch panel 4 and the push button 5 described later is also performed.

  The navigation unit 11 detects the current location using a GPS (Global Positioning System) or the like, searches for a route from the current location to a preset destination, and guides the route.

  The recording medium recording / reproducing unit 12 includes, for example, a hard disk drive or an optical disk drive, and records or reproduces a recording medium such as a hard disk or an optical disk in accordance with an instruction from the control unit 10.

  Among the components described above, the display unit 3, the touch panel 4, the push button 5, the touch panel detection unit 6, the button detection unit 7, the acceleration sensor 8, the acceleration detection unit 9, and the control unit 10 are the first embodiment of the present invention. The input device 20 concerning this is comprised.

  Next, the operation of the input device 20 in the present invention will be described with reference to the flowchart of FIG. The flowchart shown in FIG. 3 is executed by the control unit 10.

  First, in step S11, an initial operation state is acquired from the touch panel detection unit 6 and the button detection unit 7, and the process proceeds to step S12. The initial operation state is an initial state regarding whether or not coordinate information is output from the touch panel detection unit 6, that is, whether or not the touch panel 4 is pressed with a finger or the like, and on information of each of the buttons 5a to 5e. Is shown, that is, the initial state regarding whether or not the buttons 5a to 5e are pressed.

  Next, in step S12, the vibration amount G is acquired from the acceleration detector 9, and the process proceeds to step S13.

  Next, in step S13, it is determined whether or not the operation state has changed from the initial operation state acquired in step S11. If it has changed (in the case of Yes), the process proceeds to step S14, and if it has not changed (in the case of No). Advances to step S17. That is, when the state is changed from being pressed to a state where it is not pressed, or when the state is changed from being not pressed to being pressed, it is determined that the operation state has changed.

  Next, in step S14, it is determined whether or not the vibration amount G is equal to or greater than a predetermined value within a predetermined period before and after the change point of the operation state. If (Yes), the process proceeds to Step S15, and if it has never been equal to or greater than the predetermined value (No), the process proceeds to Step S16. In this step, when a change in the operation state is detected, it is determined whether the vibration amount G is equal to or greater than a predetermined value. However, in actuality, there is a slight time lag between the occurrence of vibration and a human operation. Therefore, considering this, the vibration amount G is evaluated within a predetermined period before and after the change point of the operation state. In addition, the predetermined value is set to a magnitude such as vibration, shock, and vibration generated when the vehicle has climbed over a step, sudden acceleration, sudden deceleration, or traveling on a rough road.

  Next, in step S15, the change in the operation state detected in step S13 is invalidated, and the initial operation state acquired in step S11 is maintained. Invalidity of the change in the operation state means, for example, that a change in a signal from the touch panel detection unit 6 or the button detection unit 7 is ignored and is not reflected in an instruction to the display unit 3, the navigation unit 11, or the recording medium recording / playback unit 12. To process. In this step, since the vibration amount G is equal to or greater than a predetermined value within a predetermined period before and after the change from the initial operation state, it is determined that there is a large vibration or impact that affects the operation. This operation is invalid as an operation not intended by the user.

  On the other hand, in step S16, the change in the operation state detected in step S13 is validated and processing corresponding to the changed operation state is performed. That is, an instruction corresponding to the change in the operation state is given to the display unit 3, the navigation unit 11, and the recording medium recording / reproducing unit 12. In this step, since the vibration amount G is less than the predetermined value within a predetermined period before and after the change from the initial operation state, it is determined that there is no vibration or impact that affects the operation, and the changed operation A process corresponding to the state, that is, a process corresponding to a normal pressing operation is performed.

  In step S17, since the operation state has not changed, processing corresponding to the initial operation state is performed.

  Note that the flowchart shown in FIG. 3 is repeatedly executed at regular time intervals (for example, at intervals of 0.1 seconds), so that even if the initial operation state is continued in step S15, vibrations and When the impact is settled, it is possible to return to the processing (steps S16 and S17) corresponding to the normal pressing operation.

  According to the present embodiment, the vibration amount G applied to the input device 20 detected by the acceleration sensor 8 within a predetermined period before and after the operation state of the touch panel 4 or the push button 5 changes is equal to or greater than a predetermined value. In such a case, the control unit 10 controls the touch panel 4 or the push button 5 so that the change in the operation state of the touch panel 4 or the push button 5 is invalidated and maintains the initial operation state. Even if a finger is removed or accidentally pressed due to the influence of the user, it is possible to invalidate those operations. it can.

  Next, an input device according to a second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In this embodiment, especially when the touch panel 4 is pressed, when a large vibration amount G is applied, the malfunction is prevented by using the coordinate information stored in the RAM 10a. The operation of the input device 20 in this embodiment will be described with reference to the flowchart of FIG.

  First, in step S21, the coordinate information being pressed from the touch panel detection unit 6 is acquired, and the process proceeds to step S22. This step is basically the same as step S11 in FIG. 3, and the initial coordinate information of the touch panel 4 being pressed is acquired.

  Next, in step S22, the coordinate information acquired in step S21 is stored in the RAM 10a, and the process proceeds to step S23.

  Next, in step S23, the vibration amount G is acquired from the acceleration detector 9, and the process proceeds to step S24.

  Next, in step S24, it is determined whether or not the coordinate information is different from the coordinate information acquired in step S21. If the coordinate information has changed (in the case of Yes), the process proceeds to step S25. If not changed (No), the process proceeds to step S28. The change in the coordinate information means that a position different from that in step S21 is being pressed or that a finger or the like is separated from the touch panel 4.

  Next, in step S25, it is determined whether or not the vibration amount G is equal to or greater than a predetermined value within a predetermined period before and after the change point of the coordinate information. If (Yes), the process proceeds to step S26, and if it has never become the predetermined value or more (in the case of No), the process proceeds to step S27. Also in this step, the time lag is taken into consideration as in step S14 of FIG. In addition, the predetermined value is set to, for example, the amount of vibration generated when the vehicle goes over a step, sudden acceleration, sudden deceleration, or traveling on a rough road, as in the first embodiment.

  Next, in step S26, the change in the coordinate information detected in step S24 is invalidated, the coordinate information stored in the RAM in step S22 is read, and the process corresponding to the read coordinate information is maintained. In this step, since the vibration amount G is greater than or equal to a predetermined value within a predetermined period before and after the change of the coordinate information, it is determined that there is a large vibration or impact that affects the operation, and other positions are determined. Changes in coordinate information due to pressing are invalidated as operations not intended by the user.

  On the other hand, in step S27, processing corresponding to the changed coordinate information is performed with the change of the coordinate information detected in step S24 being validated. That is, an instruction corresponding to the change of the coordinate information is given to the display unit 3, the navigation unit 11, and the recording medium recording / reproducing unit 12. In this step, since the vibration amount G is less than the predetermined value within a predetermined period before and after the change point of the coordinate information, it is determined that there is no vibration or impact that affects the operation, and the changed coordinate information is A corresponding process, that is, a process corresponding to a normal pressing operation is performed.

  In step S28, since the coordinate information has not changed, processing corresponding to the coordinate information acquired in step S21 is performed.

  According to the present embodiment, the touch panel 4 includes the RAM 10a that stores the coordinate position where the touch panel 4 is pressed, and the touch panel detected by the acceleration sensor 8 within a predetermined period before and after the time when the coordinate position is pressed. When the vibration amount G applied to 4 is equal to or greater than a predetermined value, the coordinate position stored in the RAM 10a is read immediately before the vibration is detected, and the read coordinate position is controlled as being pressed. Therefore, when the touch panel 4 is operated, a user's unintended operation due to an erroneous operation such as a finger or the like being displaced due to vibration or impact, and an adjacent button on the touch panel 4 being erroneously operated. Can be prevented.

  In the two embodiments described above, the car navigation device 1 has been described as an in-vehicle device. However, for example, an input device that is operated by pressing a push button or a touch panel such as a car audio, a car air conditioner, a power window, and the input thereof. Any in-vehicle device provided with the apparatus can be applied.

  According to the embodiment described above, the following input device 20 and the control method of the input device 20 are obtained.

(Additional remark 1) In the input device 20 provided with the touch panel 4 and the push button 5, and the control part 10 which performs the process allocated to the said touch panel 4 and the push button 5 according to the operation state of the touch panel 4 and the push button 5. ,
An acceleration sensor 8 for detecting vibration applied to the input device 20;
A control unit 10 that detects a change in operation state of the touch panel 4 and the push button 5;
When the control unit 10 detects a change in the operation state of the touch panel 4 and the push button 5 and the vibration detected by the acceleration sensor 8 is equal to or greater than a predetermined value G, the control unit 10 controls the control unit 10. The input device 20 is controlled so as to invalidate the change in the operation state of the touch panel 4 and the push button 5 detected by the device and maintain the operation state immediately before the vibration is detected.

(Additional remark 2) In the control method of the input device 20 which performs the process allocated to the touch panel 4 and the push button 5 according to the operation state of the touch panel 4 and the push button 5,
Step S12 for detecting vibration applied to the input device 20,
Detecting a change in the operation state of the touch panel 4 and the push button 5;
When the vibration detected in step S12 is greater than or equal to a predetermined value G when step S13 detects a change in the operation state of the touch panel 4 and the push button 5, the detected operation of the touch panel 4 and the push button 5 is performed. Step S15 for controlling to invalidate the change in state and maintain the operation state immediately before the vibration is detected;
The control method of the input device 20 characterized by the above-mentioned.

  According to the input device 20 and the control method of the input device 20, even when a vibration or impact that is affected by the pressing operation is applied, the finger may be separated due to the influence or may be pressed by mistake. Since these operations can be invalidated, an operation unintended by the user due to an erroneous operation can be prevented.

  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 Car navigation system (on-vehicle equipment)
4 Touch panel (input means)
5 push buttons (input means)
8 Acceleration sensor (vibration detection means)
10 Control unit (control means, change detection means)
10a RAM (storage means)
20 Input device S12 Vibration amount acquisition (vibration detection process)
S13 Operation state change (change detection process)
S15 Invalid operation state change (control process)

Claims (4)

In an input device comprising: an input unit that is operated to be pressed; and a control unit that performs processing assigned to the input unit in accordance with an operation state of the input unit.
Vibration detecting means for detecting vibration applied to the input device;
Change detecting means for detecting a change in the operation state of the input means,
When the change detection means detects a change in the operation state of the input means, and the vibration detected by the vibration detection means is equal to or greater than a predetermined value, the control means is configured to change the change detection means. The input device is controlled to invalidate the change in the operation state of the input means detected by the control unit and maintain the operation state immediately before the vibration is detected. The input means comprises a touch panel;
Storage means for storing the coordinate position where the touch panel is pressed;
When the vibration detecting means detects the vibration when the change detecting means detects the change in the coordinate information, the control means stores the coordinates stored in the storage means immediately before detecting the vibration. The input device according to claim 1, wherein the position is read and control is performed on the assumption that the read coordinate position is pressed.   An in-vehicle device comprising the input device according to claim 1. In the control method of the input device for performing the processing assigned to the input means according to the operation state of the input means to be pressed,
A vibration detecting step for detecting vibration applied to the input device;
A change detection step of detecting a change in the operation state of the input means;
When the change detection step detects a change in the operation state of the input means, and the vibration detected by the vibration detection step is greater than or equal to a predetermined value, the detected operation state of the input means A control step of controlling to invalidate the change and maintain the operation state immediately before the vibration is detected;
An input device control method comprising:

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