JP2015014874A - Terminal device, terminal device control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal device capable of adjusting the amount of scrolling of a display image by a simple and intuitive touch operation.SOLUTION: A terminal device includes an image updating section 101. If a touch operation to a touch panel, which is performed following a hold operation for maintaining a state in which a finger is brought into contact with the touch panel and is at a standstill, is an operation for instructing to scroll a display image, the image updating section specifies a value of the amount of scrolling according to a hold time clocked on the basis of the hold operation and performs scroll processing of the display image on the basis of the amount of scrolling.

Description

  The present invention relates to a terminal device including a touch panel, a terminal device control method, and a program.

  In recent years, mobile terminal devices such as mobile phones equipped with touch panels and PDAs (Personal Digital Assistants) have become widespread. The touch panel is a functional unit that inputs a user operation, and is provided on the front surface of the display for the purpose of reducing the size of the mobile terminal device. The user can perform browsing operations of various contents (for example, electronic books) displayed on the display by touching the touch panel.

  In such a portable terminal device, whether or not a portion of the content (for example, one page of an electronic document) that does not fit in the display frame and is not displayed exists virtually continuously outside the display frame. Some have the function to behave like this. In such a function, when the user performs an operation of sliding in one direction on the touch panel at a predetermined moving speed and moving amount, a portion that exists virtually outside the display frame is scrolled. Will enter the frame and be displayed on the display.

  By the way, as one of the functions of the operation for instructing the scroll, there is known a function called flick for scrolling the content in the direction in which the user paid his / her fingertip on the touch panel. According to this function, even after the fingertip is removed and the finger is released from the touch panel, scrolling of the displayed content is continued and stopped while gradually decreasing the scrolling speed. By doing so, it is possible to make the user feel as if the display image is acting as an object, so that the user can perform an intuitive and comfortable operation.

  According to the above-described mobile terminal device, the user can browse a part that does not fit in the display frame while scrolling it as desired by a flick operation, but the scroll amount by one flick operation is limited. Therefore, if the size of the content being browsed is very large relative to the size of the display frame, the flick operation must be performed many times to display the desired area on the display, which is an operation for the user. Becomes annoying. In particular, when the above-described portable terminal device displays a part of the displayed content in an enlarged manner, the display range on the display becomes relatively small with respect to the entire content. Therefore, the number of flick operations necessary to display on the screen inevitably increases.

  Therefore, as a technique for eliminating the increase in the number of operations, for example, a technique for determining the number of fingers pressed on the touch panel and changing the scroll amount of the flick operation according to the number of fingers is disclosed. (See Patent Document 1). In addition, a technique for increasing the scroll amount of an image by a flick operation when the display range of the entire image on the display screen is reduced is disclosed (see Patent Document 2).

  In addition, as a technique related to such an image scroll operation, after a predetermined touch operation is input, a slide stop operation (a series of operations until a finger is slid on the touch panel to stop the operation) is performed. A technique is disclosed in which the scrolling distance is variable according to the stop time (see Patent Document 3).

JP 2011-248416 A JP 2011-034512 A JP 2012-141158 A

  However, in the scroll amount changing method disclosed in Patent Document 1, when the portable terminal device is held with one hand and operated with the other hand, a flick operation with a plurality of fingers is performed to increase the scroll amount. Although it is easy to do, when operating the portable terminal device with only one hand, it is difficult to perform a flick operation with a plurality of fingers in the other hand. Further, in the method of increasing the scroll amount disclosed in Patent Document 2, since the scroll amount is uniquely determined by the display range (enlargement ratio) on the display screen with respect to the entire image, it is not the scroll amount intended by the user. As a result, the number of operations required to display a desired area on the display screen increases.

  Further, in Patent Document 3, in order to specify the “shuttle operation” for scrolling according to the stop time after the slide stop operation, a plurality of predetermined touch operation inputs are required. The operation becomes complicated.

  Accordingly, an object of the present invention is to provide a terminal device, a terminal device control method, and a program that can solve the above-described problems.

  The present invention has been made to solve the above-described problem, and a touch operation on the touch panel that is input following a hold operation that maintains a stationary state by bringing a finger into contact with the touch panel causes the display image to scroll. In the case of an instruction operation, an image update unit is provided that specifies a scroll amount value corresponding to the hold time measured based on the hold operation and performs a scroll process on the display image based on the scroll amount. This is a terminal device.

  Further, the present invention provides the hold operation when the touch operation on the touch panel, which is input following the hold operation for maintaining the stationary state by touching the touch panel with the finger, is an operation for instructing scrolling of the display image. The terminal device control method is characterized in that a scroll amount value corresponding to the hold time counted based on the scroll amount is specified, and the display image is scrolled based on the scroll amount.

  According to the present invention, the touch operation on the touch panel, which is input following the hold operation for keeping the computer of the terminal device in a stationary state by touching the touch panel with a finger, is an operation for instructing the scroll of the display image. A scroll amount value corresponding to the hold time measured based on the hold operation is specified, and the image update unit performs a scroll process of the display image based on the scroll amount. It is a program to do.

  According to the present invention, the scroll amount of the display image can be adjusted by a simple and intuitive touch operation.

It is a figure which shows the minimum structure of the terminal device which concerns on 1st Embodiment. It is a figure which shows the specific function structure of the terminal device which concerns on 1st Embodiment. It is a 1st figure which shows the processing flow of CPU which concerns on 1st Embodiment. It is a 2nd figure which shows the processing flow of CPU which concerns on 1st Embodiment. It is a 1st figure explaining the process of the image update part which concerns on 1st Embodiment. It is a 2nd figure explaining the process of the image update part which concerns on 1st Embodiment. It is a figure which shows the processing flow of CPU which concerns on 2nd Embodiment. It is a figure explaining the process of the image update part which concerns on 2nd Embodiment.

<First Embodiment>
The terminal device according to the first embodiment will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating a minimum configuration of a terminal device according to the first embodiment. In this figure, reference numeral 1 denotes a terminal device.
As shown in FIG. 1, the terminal device 1 measures time based on the “hold operation” when the touch operation on the touch panel input subsequent to the “hold operation” is an operation for instructing scrolling of the display image. In addition, the image updating unit 101 that specifies a scroll amount value corresponding to the hold time Th and performs display image scroll processing based on the scroll amount is provided.
The terminal device 1 according to the present embodiment is a multifunctional mobile terminal device represented by a smartphone, a tablet terminal, or the like.

Here, the touch operation (touch event) received by the terminal device 1 in the present embodiment has the following patterns.
1. Tap operation: An operation of releasing (releasing) a finger without touching (sliding) from a state in which a finger is in contact with a predetermined portion of the touch panel 140.
2. Hold operation: An operation for maintaining a stationary state by bringing a finger into contact with a predetermined portion of the touch panel 140.
3. Flick operation: An operation of touching the touch panel 140 with a finger (sliding the touched finger away from the touch panel 140).
4). Drag operation: An operation of sliding a finger on the touch panel 140 (sliding the touched finger as it is).

The terminal device 1 according to the present embodiment detects the above-described “flick operation” and “drag operation” based on an operation for instructing scrolling of the display image. This is accepted as an operation for instructing scrolling of the display image.
The terminal device 1 according to the present embodiment identifies four types of “tap operation”, “hold operation”, “flick operation”, and “drag operation” as specific operation patterns of “touch operation”. However, in the terminal device 1 according to another embodiment, the “touch operation” is not limited to these four types.
For example, the terminal device 1 according to the other embodiment performs, as “touch operation”, “enlargement / reduction operation”, “image rotation operation”, and the like for a display image displayed on a display (an image display unit 13 described later). It may be accepted. In addition, the terminal device 1 according to the other embodiment may accept an operation other than the above-described “flick operation” and “drag operation” as an operation to instruct scrolling of the display image.

When the input touch operation is a “hold operation”, the timer unit 100 (described later) according to the present embodiment sets a hold time Th that is a time during which the finger is kept stationary in the hold operation. Keep time.
In addition, the image update unit 101 according to the present embodiment performs the scrolling amount when the touch operation input subsequent to the “hold operation” is an operation for instructing scrolling of the display image (here, “flick operation”). N is set to a value corresponding to the hold time Th, and the display image is scrolled by the scroll amount N.
Hereinafter, the functional configuration will be described in detail with reference to a specific configuration example of the terminal device 1 according to the present embodiment.

FIG. 2 is a diagram illustrating a specific functional configuration of the terminal device according to the first embodiment.
As illustrated in FIG. 2, the terminal device 1 includes a CPU (Central Processing Unit) 10, a RAM (Random Access Memory) 11, an HDD (Hard Disk Drive) 12, an image display unit 13, and an operation input unit 14. It has.

The CPU 10 is an arithmetic unit that controls the operation of the entire terminal device 1, and exhibits various functions by reading a predetermined program into a register included in the CPU 10 and executing it.
The RAM 11 functions as a work area when the CPU 10 executes various programs. For example, the RAM 11 temporarily stores information constituting the entire content selected by the user (for example, a predetermined page of the electronic document) in the memory address space of the RAM 11.
The HDD 12 is a storage unit that stores an application program for browsing content, various contents, and the like.
The image display unit 13 is a liquid crystal display, an organic EL (Electro Luminescence) display, or the like, and displays the content of the content specified by the user and temporarily stored in the RAM 11 as a display image. Note that the image display unit 13 according to the present embodiment displays a portion (area) specified by an instruction from the image update unit 101 among the contents temporarily stored in the RAM 11.

  The operation input unit 14 is a functional unit that receives an operation from the user with respect to the terminal device 1. In the present embodiment, the operation input unit 14 is a touch panel module including a touch panel 140 and a touch panel control unit 141.

The touch panel 140 includes touch sensors that detect contact with a user's finger or the like arranged in a matrix. In the present embodiment, the touch panel 140 is a capacitive touch panel. In the terminal device according to another embodiment, the touch panel 140 may be configured by a method other than the capacitance method, for example, a resistance film method, an infrared method, or the like.
Note that the touch panel 140 has a structure arranged so as to overlap the image display unit 13, and the user can perform a touch operation on the touch panel 140 while visually recognizing the display image displayed on the image display unit 13.

  The touch panel control unit 141 supplies a drive signal for driving each touch sensor included in the touch panel 140 to the touch panel 140, and generates a detection signal corresponding to the capacitance generated when the user's finger contacts the touch sensor. To detect. The touch panel control unit 141 can detect this detection signal for each touch sensor arranged in a matrix, and outputs position information indicating which part (touch sensor) on the touch panel 140 is touched to the CPU 10. . The CPU 10 that has input the position information specifies a pattern (tap operation, hold operation, flick operation, drag operation) to which the touch operation input by the user belongs by specifying how the position information changes. Determine.

The CPU 10, RAM 11, HDD 12, image display unit 13, and operation input unit 14 are electrically connected to each other via a system bus 15, and each of them can exchange information simultaneously and in parallel. It has become.
The terminal device 1 according to the present embodiment may include a functional configuration other than the above, for example, a wireless communication module that exchanges information with an external device via a dedicated wireless communication line.

  As shown in FIG. 2, the CPU 10 exhibits functions as a timer unit 100, an image update unit 101, and a touch operation identification unit 102 when a predetermined program is executed.

The timekeeping unit 100 is a functional unit that measures various times related to a touch operation input via the touch panel 140. For example, as described above, when the input touch operation is the “hold operation”, the time measuring unit 100 measures the hold time Th that is a time during which the finger is kept stationary in the hold operation. To do.
Specifically, the timing unit 100 starts the timing process at the timing when the touch panel control unit 141 first detects a touch (finger contact), and continues the timing process while the finger is still in contact at the same location. Continue. Thereafter, when detecting the movement (release) of the finger separating or the movement (sliding) of the touched finger, the time measuring unit 100 stops the time measuring process and acquires the hold time Th measured during that time.

The image update unit 101 updates the display image of the content displayed on the image display unit 13 according to the touch operation pattern input via the touch panel 140. Specifically, the image update unit 101 specifies an area (display area X) to be displayed on the image display unit 13 among the entire contents temporarily stored in the RAM 11 and outputs the area to the image display unit 13. . Note that the image update unit 101 identifies the display area X by two coordinate values in xy coordinates associated with the entire content (for example, one page of an electronic document), for example.
The image display unit 13 displays the position / range specified by the display area X in the content on the display screen.

  When an operation for instructing scrolling (flick operation or drag operation) is input via the touch panel 140, the image update unit 101 determines the position / range of the display area X on the content in accordance with the operation for instructing the scrolling. change. More specifically, the image update unit 101 performs a process of continuously shifting the position of the display area X on the content in a predetermined direction according to the operation instructing the scroll. In this way, the image update unit 101 can make it appear as if the content itself is scrolling and moving in response to a flick operation or a drag operation.

  The touch operation identification unit 102 is a functional unit that identifies which touch operation the touch operation input to the touch panel 140 belongs to among the above-described patterns (such as “tap operation” and “flick operation”). Specific processing for identifying a pattern will be described using a processing flow (FIG. 3) described later.

FIG. 3 is a first diagram illustrating a processing flow of the CPU 10 according to the first embodiment.
Next, a specific processing flow of the CPU 10 according to the present embodiment will be described step by step with reference to FIG.
The start time of this processing flow is, for example, the time when the display image can be scrolled by an operation on the touch panel 140 when content having a size larger than that of the image display unit 13 is displayed as a display image. .
First, the touch operation identification unit 102 in the CPU 10 determines whether or not there is a touch operation on the touch panel 140 (step S101). More specifically, the touch operation identification unit 102 waits for input of position information indicating the touched position, which is input from the touch panel control unit 141. When there is no position information input from the touch panel control unit 141 (step S101: NO), the touch operation identification unit 102 repeats the process of step S101.

  When the touch panel 140 inputs a touch operation and position information is input from the touch panel control unit 141 (step S101: YES), the time measuring unit 100 in the CPU 10 immediately starts a time counting process of the hold time Th (step S102). ). In the subsequent processing flow, the time measuring unit 100 continuously performs the time measuring process of the hold time Th while the user stops still from the touched position.

Next, the touch operation identification unit 102 determines whether or not the hold time Th being timed by the time measuring unit 100 is equal to or greater than a predetermined time threshold Ta (step S103).
Here, when it is determined that the hold time Th is greater than or equal to the predetermined time threshold Ta (step S103: YES), the CPU 10 executes a process based on the “hold operation” as a touch event (step S104). The process based on the hold operation may be an arbitrary process defined for each browsing application. As processing based on the hold operation, the CPU 10 executes, for example, processing for displaying a predetermined menu screen, processing for saving a display image as a separate file, and the like.
In addition, the timer unit 100 performs a process of initializing (resetting) the hold time Th that was being timed in step S102.

On the other hand, when it is determined that the hold time Th is less than the predetermined time threshold Ta (step S103: NO), the touch operation identification unit 102 next performs an operation of bringing the finger in a stationary state by touching the touch panel 140 ( It is determined whether or not (release) is detected (step S105). Specifically, the touch operation identification unit 102 determines that the release has been performed at the timing when the position information indicating the touch position is no longer input from the touch panel control unit 141.
If release is detected (step S105: YES), the CPU 10 executes a process based on the “tap operation” as a touch event. The process based on the tap operation may be an arbitrary process defined for each browsing application. As processing based on the tap operation, the CPU 10 executes, for example, processing for acquiring and displaying information of the link destination document selected by the tap operation.
In addition, the time measuring unit 100 performs processing for initializing the hold time Th that was being timed in step S102.

On the other hand, when the release is not detected (step S105: NO), the touch operation identification unit 102 determines whether or not the finger touching from step S101 is kept stationary on the touch panel 140. Determination is made (step S107). Specifically, the touch operation identification unit 102 determines whether or not the stationary state from the position touched first is continued based on the position information input from the touch panel control unit 141.
Here, when it is determined that the stationary state is maintained on the touch panel 140 (step S107: YES), the touch operation identification unit 102 determines that the hold operation is continued and step S102 is performed. Returning to, the time keeping processing of the hold time Th is continued.

On the other hand, when it is determined that the stationary state is not maintained on the touch panel 140 (step S107: NO), the touch operation identifying unit 102 determines that the finger touching the touch panel 140 has slid, It is determined whether or not the moving speed is equal to or higher than a predetermined speed threshold vth (step S108). Specifically, the touch operation identification unit 102 calculates a difference between positions indicated by position information sequentially input from the touch panel control unit 141 and position information input immediately before. When the difference is large, it means that the finger is moved quickly, and when the difference is small, it means that the finger is moved slowly. Therefore, the CPU 10 can specify the speed of the finger sliding on the touch panel 140 by calculating this difference.
Then, the CPU 10 determines whether or not the moving speed of the sliding finger is equal to or higher than the speed threshold vth by performing a process of comparing the calculated difference with a predetermined speed threshold vth.

Here, when the moving speed of the finger sliding on the touch panel 140 is less than the speed threshold vth (step S108: NO), the CPU 10 (image update unit 101) recognizes the touch operation as a “drag operation”. Then, the display image is scrolled based on the drag operation (step S111). The scroll process based on the drag operation refers to a process of scrolling the display image in accordance with the movement of the sliding user's finger.
Specifically, first, the image update unit 101 calculates a difference between the position information input last time and the position information input this time among the position information sequentially input from the touch panel control unit 141, and moves the finger on the touch panel 140. The information which shows the movement distance and direction of is acquired. Then, the image update unit 101 moves the position of the display area X on the displayed content in accordance with the acquired movement distance and direction of the finger. In this way, the image update unit 101 can make it feel as if the user is moving while pressing the content directly with a finger.

On the other hand, when the moving speed of the finger sliding on the touch panel 140 is equal to or higher than the speed threshold vth (step S108: YES), the image update unit 101 recognizes the touch operation as a “flick operation”. In step S109, the image update unit 101 performs processing for specifying the scroll amount N. The specific processing content of step S109 will be described later. Note that the scroll amount N is a value indicating the length or distance in the displayed content (display image) represented by, for example, the number of pixels.
Then, the image update unit 101 performs a process of scrolling the display image by the scroll amount N specified in step S109 (step S110). More specifically, the image update unit 101 moves the position of the display area X indicating the portion to be displayed as the display image in the direction specified by the flick operation by the scroll amount N on the content. At this time, the image update unit 101 may scroll the display image so as to stop while gradually decreasing the speed.

  As described above, the CPU 10 specifies the pattern of the touch operation input to the touch panel 140 through various conditions, and executes various processes according to the touch operation (touch event). In particular, the image update unit 101 performs a process of scrolling the display image displayed by the image display unit 13 by moving the position of the display region X on the content being displayed in response to an input drag operation or flick operation. I do.

FIG. 4 is a second diagram illustrating a processing flow of the CPU according to the first embodiment.
Next, with reference to FIG. 4, the specific contents of the process for specifying the scroll amount N in step S109 described above will be described.
In starting the process of step S109 (FIG. 3), first, the image update unit 101 reads the hold time Th timed by the time measuring unit 100 at this time. Then, the image update unit 101 determines whether or not the hold time Th is greater than or equal to a predetermined time threshold value Tc (step S201). However, the time threshold value Tc shall satisfy the relationship of Tc <Ta.
Here, when it is determined that the hold time Th is less than the predetermined time threshold Tc (step S201: NO), the image update unit 101 sets the scroll amount N to a predetermined predetermined scroll amount setting value Nref. (N = Nref) (step S202). The scroll amount setting value Nref is a reference value for the scroll amount N that is predetermined in order to specifically determine the value of the scroll amount N. The scroll amount setting value Nref may be, for example, a length (number of pixels) that matches the screen size (vertical or horizontal size) of the image display unit 13.

  On the other hand, when it is determined that the hold time Th is greater than or equal to the predetermined time threshold Tc (step S201: YES), the image update unit 101 sets the scroll amount N to a value twice the scroll amount set value Nref ( N = 2Nref) (step S203).

  Summarizing the above processing, the image update unit 101 determines that the hold time Th is less than the time threshold Tc when the flick operation (step S108: YES) is input following the hold operation (repeat of steps S102 to S107). If there is, processing for setting the scroll amount N to the scroll amount set value Nref is performed (step S202). Further, when the hold time Th is equal to or greater than the time threshold value Tc, the image update unit 101 performs a process of setting the scroll amount N to a constant multiple (twice) of the scroll amount setting value Nref (step S203).

  According to the processing in steps S201 to S203 described above, the hold time Th, which is the time from when the touch operation is detected in step S101 (FIG. 3) until the finger slides in step S108 (FIG. 3), is a predetermined time threshold. The amount by which the display image is scrolled (scroll amount N) changes based on the subsequent flick operation depending on whether or not it is equal to or greater than Tc.

5 and 6 are a first diagram and a second diagram for explaining the processing of the image updating unit according to the first embodiment.
Next, a specific operation example of the image updating unit 101 based on the processing illustrated in FIGS. 3 and 4 will be described with reference to FIGS. 5 and 6.
As shown in FIG. 5, the RAM 11 stores, for example, information for one page of a predetermined electronic document designated by the user as the content being displayed. The CPU 10 stores the coordinates for specifying the position in one page of the electronic document in the RAM 11 during execution of the browsing application. For example, the CPU 10 stores the origin (0, 0) at the upper left of the displayed page and the end points (x_end, y_end) at the lower right of the page.

Here, before the operation for instructing scrolling (flick operation) is input, the image update unit 101 sets the display area X indicating the area actually displayed on the image display unit 13 to the coordinates (x1) on the content. , Y1) and (x2, y2) are set to positions specified (see FIG. 5). The image display unit 13 displays a region included in the display region X specified by the coordinates (x1, y1) and (x2, y2) as a display image.
The image update unit 101 sets the display area X so that it always fits within the entire content area. Specifically, the image update unit 101 sets the coordinates (x1, y1) for specifying the upper left end point of the display area X so that x1 ≧ 0 and y1 ≧ 0 are always satisfied. Further, the image update unit 101 sets the coordinates (x2, y2) specifying the lower right end point of the display area X so that x2 ≦ x_end and y2 ≦ y_end are always satisfied.
That is, the image update unit 101 can display an area in which information as content does not exist (outside the rectangular area of coordinates (0, 0) and (x_end, y_end)) and cannot be displayed on the image display unit 13. Is limited to the area where the information as the content exists.

  Here, the user touches the touch panel 140 with a finger (FIG. 3, step S101), and after performing a hold operation that stops the finger for a predetermined time (hold time Th) (FIG. 3, steps S102 to S107), the speed Assume that the display image is slid to the left of the display image (-x direction in FIG. 5) at a speed equal to or higher than the threshold value vth (FIG. 3, step S108).

At this time, when the hold time Th is less than the time threshold value Tc, as described above, the image update unit 101 sets the scroll amount N to the scroll amount set value Nref (N = Nref). As a result, the image update unit 101 performs a process of moving the display area X in the right direction (+ x direction in FIG. 5) by the scroll amount N = Nref. That is, the image update unit 101 moves the position of the display area X after the scroll process to a position specified by coordinates (x1 + Nref, y1) and (x2 + Nref, y2) (see FIG. 6A).
Then, the image display unit 13 displays a part of the content included in the display area X (area specified by coordinates (x1 + Nref, y1), (x2 + Nref, y2)) after being moved by the scroll process as a display image.

  On the other hand, when the hold time Th is equal to or greater than the time threshold value Tc, as described above, the image update unit 101 sets the scroll amount N to be twice the scroll amount set value Nref (N = 2Nref). As a result, the image update unit 101 performs a process of moving the display area X in the right direction (+ x direction in FIG. 5) by the scroll amount N = 2Nref. That is, the image update unit 101 moves the position of the display area X after the scroll process to a position specified by coordinates (x1 + 2Nref, y1) and (x2 + 2Nref, y2) (see FIG. 6B).

  Thus, according to the terminal device 1 according to the present embodiment, when a flick operation for scrolling a display image is input, the touch panel 140 is first touched with a finger and then moved (slide). ) The amount of scrolling changes according to the rest time (hold time Th) of the finger until immediately before. This allows the user to adjust the amount of scrolling by flicking only by intentionally changing the finger rest time, thereby reducing the number of flicking operations required to view the desired portion. Can do. In addition, since an additional operation for changing the scroll amount is easy for the user, the operability for scrolling is not impaired.

  As described above, according to the terminal device 1 according to the present embodiment, the scroll amount of the display image can be adjusted by a simple and intuitive touch operation.

In addition, the terminal device 1 which concerns on 1st Embodiment is not limited to the above-mentioned content, It can deform | transform as follows.
For example, the image updating unit 101 according to the modification of the first embodiment presets a plurality of different time threshold values Tc1, Tc2,... Instead of the time threshold value Tc, and performs step S201 (FIG. 4). ), Every time the hold time Th becomes Tc1, Tc2,... Or more, the scroll amount N may be increased to twice, three times the scroll amount set value Nref,.
Further, the scroll amount N need not be an integral multiple of the scroll amount set value Nref, and may be 1.5 times, 2 times, 2.5 times,..., For example, the scroll amount set value Nref.

The scroll amount setting value Nref, which is a reference value for the scroll amount N, may be changeable as the user intends based on a predetermined setting change operation. Further, the scroll amount setting value Nref is set to a different value depending on the aspect ratio of the screen size of the image display unit 13 depending on whether the image display unit 13 is scrolled in the vertical direction or the horizontal direction. It may be done.
Further, the scroll amount setting value Nref may be changed according to the moving speed of the finger in the flick operation. In this case, the image update unit 101 may change the scroll amount setting value Nref so as to be proportional to the moving speed of the finger in the flick operation. In this way, the user can adjust the scrolling amount not only by the hold time Th but also by the speed of the finger in the flick operation.

Further, the processing flow described with reference to FIG. 3 is not limited to the contents of the above description. For example, when the drag operation is input in step S111 and the finger is still in contact with the touch panel 140 after the drag operation is input, the time measuring unit 100 may start the time counting process for the hold time Th again.
In addition, the processing flow described with reference to FIG. 3 may be a processing flow in which the order of processing is changed within a range in which the function as the terminal device 1 is ensured.

<Second Embodiment>
Next, a terminal device according to a second embodiment will be described with reference to the drawings.
Since the functional configuration of the terminal device 1 according to the second embodiment is the same functional configuration as that of the first embodiment (see FIG. 2), description thereof is omitted.

FIG. 7 is a diagram illustrating a processing flow of the CPU according to the second embodiment.
In the terminal device 1 according to the present embodiment, the content of the process (FIG. 3, step S109) in which the image updating unit 101 specifies the scroll amount N is different from the process content (FIG. 4) in the first embodiment. Hereinafter, the processing content of step S109 of the image update unit 101 according to the present embodiment will be specifically described with reference to FIG. In FIG. 7, steps indicating the same processing contents as those in the first embodiment are denoted by the same reference numerals.

First, the image update unit 101 according to the present embodiment reads the hold time Th measured by the time measuring unit 100 at this time, as in the first embodiment. Then, the image update unit 101 determines whether or not the hold time Th is greater than or equal to a predetermined time threshold value Tc (step S201).
Here, when it is determined that the hold time Th is less than the predetermined time threshold Tc (step S201: NO), the image update unit 101 sets the scroll amount N to a predetermined predetermined scroll amount setting value Nref. (N = Nref) (step S202).

On the other hand, when it is determined that the hold time Th is greater than or equal to the predetermined time threshold value Tc (step S201: YES), the image update unit 101 further determines whether or not the hold time Th is greater than or equal to the predetermined second time threshold value Td. Determination is made (step S301). Hereinafter, the time threshold Tc is referred to as “first time threshold Tc” with respect to the second time threshold Td. The second time threshold value Td is larger than the first time threshold value Tc.
Here, when it is determined that the hold time Th is less than the second time threshold Td (step S301: NO), the image update unit 101 sets the scroll amount N to a value twice the scroll amount set value Nref. (N = 2Nref) (step S203).

  On the other hand, when it is determined that the hold time Th is equal to or greater than the second time threshold Td (step S301: YES), the image update unit 101 sets the scroll amount N to an amount indicating the maximum scrollable length (maximum scroll amount). Nmax) (step S302). Here, the maximum scroll amount Nmax is specifically the scroll amount until reaching the end of the range that can be displayed as the display image displayed by the image display unit 13, that is, the end of the content being displayed. . The image update unit 101 acquires the position of the display area X before the scroll process, calculates the distance until the display area X reaches the end of the content, and sets the calculated value as the maximum scroll amount Nmax. To do.

  Summarizing the above processing, in addition to the function according to the first embodiment, the image updating unit 101 further scrolls the scroll amount N to the maximum value Nmax when the hold time Th is equal to or greater than the time threshold Td. The process to set to (step S302).

FIG. 8 is a diagram for explaining processing of the image updating unit according to the second embodiment.
Next, a specific operation example of the image update unit 101 based on the processing in step S302 (FIG. 7) will be described with reference to FIG.
As shown in FIG. 8A, the RAM 11 stores information for one page of a predetermined electronic document designated by the user. The CPU 10 sets coordinates for specifying the position of the electronic document in the browsing application. For example, the CPU 10 sets the origin (0, 0) at the upper left of the displayed page and the end points (x_end, y_end) at the lower right of the page.
In this case, the end of the content (electronic document) is a portion that borders the page of the content, and more specifically, an area where the x coordinate value on the coordinates is indicated by “0” or “x_end”, In addition, the y coordinate value is an area indicated by “0” or “y_end”.

  Here, the display area X is a rectangular area specified by coordinates (x1, y1), (x2, y2), for example, before an operation for instructing scrolling (flick operation) is input (FIG. 8 ( a)). The image display unit 13 displays an area included in the display area X specified by the coordinates (x1, y1) and (x2, y2) as a display image.

  Here, the user touches the touch panel 140 with a finger (FIG. 3, step S101), and after performing a hold operation that stops the finger for a predetermined time (hold time Th) (FIG. 3, steps S102 to S107), the speed Assume that the display image is slid to the left (in the −x direction in FIG. 8) with a speed equal to or higher than the threshold value vth (FIG. 3, step S108).

At this time, when the hold time Th is equal to or longer than the second time threshold value Td, as described above, the image update unit 101 sets the scroll amount N to the maximum scroll amount Nmax (N = Nmax). Here, the image update unit 101 determines the distance until the display area X reaches the end (the side connecting the coordinates (x_end, 0) and (x_end, y_end)) on the right side (the + x direction in FIG. 8). And the calculated value (= maximum scroll amount Nmax) is set as the scroll amount N. In the example shown in FIG. 8B, the maximum scroll amount Nmax is calculated by Nmax = x_end−x2.
The image display unit 13 then displays the content portion included in the display area X (the area specified by the coordinates (x1 + Nmax, y1), (x_end, y2)) after moving to the end of the content by scroll processing. Display as a display image.

As described above, according to the terminal device 1 according to the second embodiment, the hold time Th that is the time from when the touch operation is detected in step S101 (FIG. 3) until the finger slides in step S108 (FIG. 3) is determined. When the predetermined second time threshold value Td is reached, the display image is scrolled to the end of the content being displayed based on the flick operation that follows.
Therefore, when the user wants to display a desired end portion of the displayed content, the user does not need to perform the flick operation many times, so that the operation for scrolling can be further simplified.

  The terminal device 1 described above has a computer system inside. Each process of the CPU 10 described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing this program. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM (Compact Disk Read Only Memory), a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  Moreover, although the above-mentioned terminal device 1 was demonstrated as what is portable terminal devices, such as a smart phone, the terminal device 1 which concerns on other embodiment is not limited to such an aspect, For example, a touch panel It may be a desktop personal computer or the like.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof, as long as they are included in the scope and gist of the invention.

1 ... Terminal device 10 ... CPU
DESCRIPTION OF SYMBOLS 100 ... Time measuring part 101 ... Image update part 102 ... Touch operation identification part 11 ... RAM
12 ... HDD
13 ... Image display unit 14 ... Operation input unit 140 ... Touch panel 141 ... Touch panel control unit 15 ... System bus

Claims (7)

When the touch operation on the touch panel that is input following the hold operation that keeps the touch panel in a stationary state by touching the touch panel is an operation that instructs to scroll the display image, the time is counted based on the hold operation. A terminal device comprising: an image updating unit that specifies a scroll amount value corresponding to the hold time and performs a scroll process of the display image based on the scroll amount. When the touch operation input to the touch panel is the hold operation, it further includes a time measuring unit that measures the hold time that is a time during which the stationary state is maintained. The terminal device according to claim 1. The image update unit
When the operation for instructing scrolling of the display image is input following the hold operation, when the hold time is less than a predetermined time threshold, the scroll amount is set to a predetermined scroll amount setting value. The terminal device according to claim 1, wherein when the hold time is equal to or greater than the time threshold, the scroll amount is set to a constant multiple of the scroll amount setting value. The image update unit further includes:
When an operation for instructing scrolling of the display image is input following the hold operation, if the hold time exceeds a predetermined second time threshold, an end of a range that can be displayed as the display image The terminal device according to any one of claims 1 to 3, wherein the terminal device is scrolled until the portion is displayed. The timing unit is
5. The hold time during timekeeping is reset when a tap operation is performed after the hold operation is input without moving from the predetermined location where the finger is touched. 5. The terminal device as described in any one. When the touch operation on the touch panel that is input following the hold operation that keeps the touch panel in a stationary state by touching the touch panel is an operation that instructs to scroll the display image, the time is counted based on the hold operation. A terminal device control method comprising: specifying a scroll amount value corresponding to the hold time, and performing a scroll process on the display image based on the scroll amount. The terminal computer,
When the touch operation on the touch panel that is input following the hold operation that keeps the touch panel in a stationary state by touching the touch panel is an operation that instructs to scroll the display image, the time is counted based on the hold operation. An image updating means for specifying a scroll amount value corresponding to the hold time and performing a scrolling process of the display image based on the scroll amount;
A program characterized by functioning as

Images