JP5176870B2 - Information processing apparatus and input control method - Google Patents

Description

  The present invention relates to an information processing apparatus and an input control method, and more particularly to an information processing apparatus and an input control method that can execute an appropriate operation according to an operation on a touch panel.

  Conventionally, an information processing apparatus provided with a touch panel is known as an input unit for a user to input information and instructions. Input of information and instructions using the touch panel is executed when the user touches the screen with a fingertip, and does not require a bulky device such as a keyboard or a mouse, and thus is often used in a mobile terminal such as a mobile phone.

JP-A-11-203045

  However, the input of information and instructions using the touch panel has a problem that the input result is often recognized erroneously and causes a malfunction as compared with the input of information and instructions using other devices such as a keyboard and mouse. It was.

  For example, in the case of keyboard input, it is only necessary to recognize which button has been pressed among a plurality of buttons, so that malfunctions rarely occur. On the other hand, in the case of input using a touch panel, a user needs to perform a complicated process of analyzing how a finger touches a single touch panel and recognizing a drag or double tap. Have been misrecognized and often cause malfunctions.

  In addition, in the case of input using a touch panel, malfunction may occur due to the user's characteristic that a finger is likely to shake. For example, a double tap is recognized when a tap operation on the touch panel continues within a predetermined period. However, in the case of a user whose finger is easy to shake, the movement of the finger is detected at the time of tapping, and the second tap is performed. In some cases, it was not recognized as a continuous tap.

  The disclosed technique has been made to solve the above-described problems caused by the prior art, and provides an information processing apparatus and an input control method capable of executing an appropriate operation according to an operation on a touch panel. Objective.

In order to solve the above-described problems and achieve the object, an information processing apparatus disclosed in the present application is, in one aspect, a touch panel that detects the position of a finger , and when the finger position is detected by the touch panel , The discard unit that discards the finger position detected by the touch panel for a predetermined period or a predetermined number of times, the finger position that the discard unit did not discard, and the finger event converted into the input event corresponding to the operation instruction to the previous application A calculation unit that calculates a difference with a position; and a conversion unit that converts the position of a finger that was not discarded by the discarding unit into the input event when the difference calculated by the calculation unit is greater than a predetermined value; And a change unit that changes the predetermined value to a smaller value when a drag operation is detected.

  In addition, in order to solve the above-described problem, a component, expression, or any combination of components of the information processing device disclosed in the present application is applied to a method, a device, a system, a computer program, a recording medium, a data structure, and the like. It is effective for.

  According to one aspect of the information processing apparatus and the input control method disclosed in the present application, there is an effect that an appropriate operation according to an operation on the touch panel can be executed.

  Exemplary embodiments of an information processing apparatus and an input control method disclosed in the present application will be described below in detail with reference to the accompanying drawings.

  First, the input control method according to the present embodiment will be described. The input control method according to the present embodiment analyzes a detection result of an operation performed on the touch panel, and performs control so that an appropriate operation corresponding to the operation is executed.

  Specifically, the input control method according to the present embodiment implements a guard function in order to execute an appropriate operation according to an operation on the touch panel. The guard function will be described below.

  When a user places a finger on the touch panel, even if the user does not intend to move the finger, movement of the finger may be detected on the touch panel due to finger detection errors on the touch panel or subtle movements of the finger. is there. If this unintended finger movement is transmitted to an application running on the information processing apparatus, an unexpected malfunction may occur.

  In order to prevent such an erroneous operation due to detection of unintended finger movement, in the input control method according to the present embodiment, the information on the finger position detected this time is the finger position previously notified to the application or the like. Compared with information about. If the difference between the coordinate values of the finger positions is within a predetermined guard value range, the information on the finger position detected this time is discarded without being notified to an application or the like.

  In this way, by discarding information related to finger movement within a range close to the finger position previously notified to the application or the like, unintended finger movement is not notified to the application or the like, and the occurrence of malfunction is suppressed. .

here,
Resolution: 864 × 480 pixels Diagonal size: 3.2 inches Interval for outputting information about finger movement: 33 ms
A preferable size of the guard value will be described by taking as an example a case where the user performs a drag operation at a standard speed on the touch panel having the specifications.

  When the guard value is set to horizontal: 50 pixels and vertical: 30 pixels, as shown in FIG. 5A, information indicating finger movement is continuously discarded by the guard function for four pieces after the start of the drag operation. End up. If a large amount of information indicating the movement of the finger is discarded, the followability of the application or the like with respect to the movement of the finger is deteriorated.

  On the other hand, when the guard value is halved (vertical: 25 pixels, horizontal: 15 pixels), as shown in FIG. 5B, the number of times information indicating finger movement is discarded by the guard function after the start of the drag operation. , Greatly reduced once. With this level of disposal, the user will not perceive that the followability of an application or the like with respect to finger movement is poor.

  By further reducing the guard value, it is possible to further improve the follow-up of the application with respect to finger movement, but in that case, the purpose of the guard function is to prevent malfunction caused by detection of unintended finger movement. It will not be achieved. Accordingly, in the case of the touch panel having the above specifications, it is preferable to set the guard value to about vertical: 25 pixels and horizontal: about 15 pixels.

  In this way, the guard value is set to a value that can achieve the purpose of the guard function of preventing an erroneous operation due to detection of unintended finger movements and that does not cause the user to feel uncomfortable regarding the drag operation.

  In normal times, the guard value may be set to a large value, and the guard value may be decreased after the start of the drag operation is determined until the finger leaves the touch panel and the drag operation ends. By performing such control, it is possible to almost completely eliminate the deterioration of the followability of the application or the like with respect to the drag operation while reliably preventing an erroneous operation due to detection of an unintended finger movement.

  The input control method according to the present embodiment includes control for eliminating double tap detection omission in addition to the control related to the guard function. Double tap is an operation that is recognized when the user continuously taps the touch panel within a predetermined period. However, when the user taps, the finger moves slightly in addition to the tap. It may be detected on the touch panel. If another event such as finger movement is detected between the two taps in this way, the taps are not continuously detected, and the user's operation may not be recognized as a double tap.

  This problem can also be solved by using the guard function. That is, if the finger movement detected after the tap can be ignored by the guard function, the user's operation is correctly recognized as a double tap. However, since momentum is applied to the finger when tapping, the amount of finger movement detected during the tapping operation is greater than the amount of finger movement when the user is stationary on the touch panel. Therefore, in order to improve the double tap recognition rate by ignoring the finger movement during the tap operation by the guard function, it is necessary to set a large guard value. to degrade.

  Therefore, in the input control method according to the present embodiment, after the tap is detected, the detected finger movement is discarded for a predetermined period. Even if the finger slips when tapping, the time for detecting the movement of the finger is short. For this reason, after a tap is detected, the detected finger movement is discarded for a predetermined period, so that when a double tap operation is performed, nothing is detected between the two taps. Taps are recognized correctly.

  The period for discarding the detection result of finger movement after tap detection is set to a period during which the movement of the finger that slipped at the time of tapping is not recognized and the initial movement of the drag operation is felt to be slow. It is preferable to do. As a result of the verification, the period during which the finger movement is detected at the time of tapping is about 100 ms at the maximum, and therefore, the period for discarding the detection result of the finger movement after the tap detection is preferably about 100 ms.

  In addition, in the case of a touch panel that outputs information about finger movement at a fixed interval when a finger is placed, such as a touch panel with the above specifications, the detected finger movement is detected after a tap is detected. It may be discarded only a predetermined number of times. For example, when information about finger movement is output at 33 ms intervals when a finger is placed, such as a touch panel with the above specifications, a period of 100 ms can be obtained by discarding the detected finger movement only three times. The same effect as when only discarding is obtained.

  Next, the configuration of a device that executes the input control method according to the present embodiment will be described using a mobile phone as an example. FIG. 1 is a diagram illustrating a configuration of a mobile phone C according to the present embodiment. In FIG. 1A, 1 is a touch panel and 2 is an operation key.

  The cellular phone C is a foldable type composed of an upper housing and a lower housing, and has a shape as shown in FIG. The hinge portion 3 is configured to be rotatable, and the touch panel 1 can be directed inward or outward during bending. When folded with the touch panel 1 facing outward, the mobile phone C accepts various operations via the touch panel 1 while maintaining the folded shape, and executes processing corresponding to the accepted operation.

  FIG. 2 is a block diagram showing a functional configuration related to the touch panel 1 of the mobile phone C. As shown in FIG. Reference numeral 1 denotes a touch panel, 4 denotes a touch panel driver, 5 denotes an OS (Operating System), 6 denotes a framework, and 7 denotes an application. The touch panel driver 4 determines the operation of the finger based on the event related to the finger detected by the touch panel 1 and notifies the OS 5 of various types of events.

  Events detected on the touch panel 1 include types such as a coordinate event, an event with a finger / an event without a finger. The coordinate event is an event indicating the position of the finger on the touch panel 1. The event with a finger / the event without a finger is an event indicating that a finger has touched the touch panel 1 or a finger has been released.

  The events that the touch panel driver 4 notifies to the OS 5 based on these events include types such as a coordinate event, a tap DOWN, and a tap UP event. The coordinate event is an event indicating the position of the finger on the touch panel 1. The tap DOWN event is an event indicating that a finger touches the touch panel 1 and a position where the finger is placed. The tap UP event is an event indicating that a finger has been removed from the touch panel 1.

  The touch panel driver 4 executes the input control method according to the present embodiment in order to prevent a malfunction that is not intended by the user. That is, after notifying the OS 5 of the touch DOWN event, the touch panel driver 4 does not notify the finger position as a coordinate event even if movement of the finger is detected within a range within the guard value. The touch panel driver 4 discards the coordinate event notified from the touch panel 1 a predetermined number of times after notifying the tap DOWN event indicating that the finger touches the touch panel 1.

  The OS 5 analyzes coordinate events, tap DOWN events, and the like notified from the touch panel driver 4, determines an operation performed by the user, and notifies the determination result to the framework 6. Specifically, the OS 5 determines whether the operation performed by the user is a single tap, a double tap, or a drag, and notifies the framework 6 of an event corresponding to the determination result. .

  The framework 6 notifies the application 7 of the event notified from the OS 5. The application 7 executes various processes based on the event notified from the framework 6.

  FIG. 3 is a flowchart of processing executed by the touch panel driver 4 shown in FIG. The touch panel driver 4 receives an event from the touch panel 1 (step S1). Then, the touch panel driver 4 distributes processing for each event received from the touch panel 1 (step S2).

  If the event received in step S1 is a finger presence event, the touch panel driver 4 notifies the OS 5 that the finger has been placed on the touch panel 1 and coordinates indicating the position thereof by a tap DOWN event (step S3). . Then, the touch panel driver 4 stores the coordinates notified to the OS 5 (step S4), clears the coordinate counter to 0 (step S5), and ends the processing related to the event.

  If the event received in step S1 is a coordinate event, the touch panel driver 4 adds 1 to the coordinate counter (step S6). Here, if the value of the coordinate counter is smaller than 3 which is a threshold value (No at Step S7), the touch panel driver 4 ends the process related to the event.

  Here, the threshold value is set to 3 as an example, as long as the movement of the finger slipped at the time of tapping is not recognized and the initial motion of the drag operation is felt to be dull. Any value is acceptable. Also, instead of using the number of times as a threshold, time may be used as a threshold. In this case, in step S5, not the process of clearing the coordinate counter to 0 but the process of resetting the timer is executed.

  In step S6, when the value of the coordinate counter is equal to or greater than 3 which is a threshold value (Yes in step S7), the touch panel driver 4 calculates the difference between the coordinate notified last time to the OS 5 and the coordinate notified this time (step S6). S8). If the coordinate difference is larger than the guard value (Yes at Step S9), the touch panel driver 4 notifies the OS 5 of the coordinate indicating the position of the finger with a coordinate event (Step S10). And the touch panel driver 4 memorize | stores the coordinate notified to OS5 (step S11), and complete | finishes the process regarding the said event.

  If the coordinate difference calculated in step S8 is smaller than the guard value (No in step S9), the touch panel driver 4 ends the process related to the event.

  If the event received in step S1 is a fingerless event, the touch panel driver 4 notifies the OS 5 of coordinates indicating that the finger has left the touch panel 1 by a tap UP event (step S12). Then, the touch panel driver 4 ends the process related to the event.

  Next, the effect of the input control method according to the present embodiment will be described with a specific example. FIG. 4A is a diagram of a specific example of conventional input control. In the example illustrated in FIG. 4A, when the user performs a double tap operation, a coordinate event is notified from the touch panel driver 4 to the OS 5 following the tap DOWN event. With this coordinate event, the OS 5 cancels the double tap detection process in the middle, and the double tap detection has failed.

  FIG. 4B is a diagram of a specific example of the input control according to the present embodiment. In the example illustrated in FIG. 4B, when the user performs a double tap operation, the coordinate event detected following the finger presence event on the touch panel 1 is discarded in the touch panel driver 4. For this reason, only the tap DOWN event and the tap UP event are continuously notified to the OS 5, and the recognition of the double tap in the OS 5 is successful.

  As described above, in this embodiment, since the coordinate event is discarded only for a predetermined period (predetermined number of times) after the guard function or tap detection, the event causing the error motion is not notified to the upper level. An appropriate operation according to the operation on the touch panel can be executed.

It is a figure which shows the structure of the mobile telephone which concerns on a present Example. It is a block diagram which shows the function structure relevant to the touchscreen of a mobile telephone. It is a flowchart of the process performed with the touch panel driver shown in FIG. It is a figure which shows the specific example of the conventional input control. It is a figure which shows the specific example of the input control concerning a present Example. It is a figure which shows an example of operation | movement in case a guard value is set to horizontal: 50 pixels and vertical: 30 pixels. It is a figure which shows an example of operation | movement in case a guard value is set to horizontal: 25 pixel and vertical: 15 pixel.

Explanation of symbols

1 Touch panel 2 Operation key 3 Hinge part 4 Touch panel driver 5 OS
6 Framework 7 Application

Claims (2)

A touch panel that detects the position of the finger ;
When a finger position is detected by the touch panel, a discarding unit that discards the finger position detected by the touch panel after a predetermined period or a predetermined number of times;
A calculation unit that calculates a difference between a finger position that has not been discarded by the discarding unit and a finger position converted into an input event corresponding to an operation instruction to the previous application;
When the difference calculated by the calculation unit is greater than a predetermined value, a conversion unit that converts the finger position that the discard unit did not discard into the input event;
A change unit that changes the predetermined value to a smaller value when a drag operation is detected;
An information processing apparatus comprising: An input control method executed by an information processing apparatus having a touch panel,
A detection step of detecting a finger position on the touch panel;
When the position of the finger is detected by the detection step, a discarding step of discarding the detected finger position after a predetermined period or a predetermined number of times;
A calculation step for calculating a difference between a finger position that has not been discarded in the discarding step and a finger position converted into an input event corresponding to an operation instruction to the previous application;
When the difference calculated in the calculation step is larger than a predetermined value, a conversion step for converting the position of the finger that was not discarded in the discarding step into the input event;
A changing step of changing the predetermined value to a smaller value when a drag operation is detected;
  The input control method characterized by performing.

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