JP2015148903A - Display device, control program, scroll display method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that enables an image displayed in a display surface to be correctly stopped at a desired position when scrolling the image.SOLUTION: A display device comprises: a scroll display control unit that executes a scroll operation causing a scroll instruction of a user to scroll an image displayed in a display surface; an operation control unit that changes over the scroll operation when a start of a touch operation to a touch panel is detected during the scroll operation; and a stoppage control unit that causes the scroll operation changed over by the operation control unit to be stopped when a completion of the touch operation to the touch panel is detected.

Description

  The present invention relates to a display device that scrolls and displays an image such as an icon.

  In the image forming apparatus, the corresponding functions are increasing year by year, and the number of buttons (icons) for setting each function is also increasing. Therefore, it is difficult to display all the buttons corresponding to all functions at once on the display screen for setting. As a technology to cope with this, scrolling that determines the order of buttons, displays some buttons on the display screen, scrolls the display buttons, and replaces the displayed buttons. There is movement.

  However, when the number of functions is very large and there are many buttons to be scrolled, it takes a long waiting time to scroll until reaching the desired button from among them, or In order to do it in a short time, it is necessary to scroll at high speed.

  Patent Document 1 discloses that the screen is scrolled in a predetermined direction while the scroll button is pressed down by the user, and when the pressing is completed, the screen is displayed by returning a predetermined amount in a direction opposite to the predetermined direction. .

JP 2005-251008 A

  In the technique disclosed in Patent Document 1, in the case where the timing for ending the push-down is delayed, it is possible to suppress the deviation of the stop position by returning the desired button that has passed by a predetermined amount. However, in the technique of Patent Document 1 in which the predetermined amount is returned, the button can be stopped at an appropriate position (for example, the center of the screen) when the pressing is finished at the timing when the time corresponding to the predetermined amount has passed. However, depending on the timing at which the depression is completed, the desired button may not stop at an appropriate position. Conversely, if the timing at which the depression is terminated is too early, the deviation of the stopping position increases. It will be.

  In view of such a problem, the present application aims to provide a display device capable of stopping an image displayed on a display surface at a desired position when scrolling.

1. A touch panel that displays an image on a display surface and detects a touch operation on the display surface by a user;
A scroll display control unit that performs a scroll operation of scrolling an image displayed on the display surface in accordance with a user scroll instruction;
An operation control unit that switches the scroll operation when the start of a touch operation on the touch panel is detected during the scroll operation;
A stop control unit that stops the scrolling operation switched by the operation control unit when the end of the touch operation on the touch panel is detected;
A display device comprising:

  2. The operation control unit performs first switching control for switching the scroll operation to a re-scroll operation that is scrolled in a direction opposite to the scroll direction at the start of the touch operation when the start of the touch operation is detected. 2. The display device according to 1 above.

  3. The operation control unit temporarily stops the scroll operation at a timing when the start of the touch operation is detected, and then switches to the re-scroll operation when the touch operation is continued for a predetermined time or more. 3. The display device as described in 2 above.

  4). The operation control unit switches a scroll speed of the scroll operation to a second scroll speed different from the first scroll speed at the start of the touch operation when the start of the touch operation is detected. 2. The display device according to 1 above, wherein control is performed.

5. The operation controller is
At the timing when the start of the touch operation is detected, the scroll operation is paused,
Thereafter, it is determined whether or not the touch position has moved in the opposite direction or the same direction as the scroll direction at the start of the touch operation with respect to the touch start position,
When it is determined that the movement has been performed in the same direction, the re-scrolling operation is performed by scrolling in the same direction, and when it is determined that the movement has been performed in the reverse direction, the re-scrolling operation is performed by scrolling in the reverse direction. 2. The display device according to 1 above, wherein switching control is performed.

  6). The display according to any one of 2, 3, and 5, wherein a scroll speed in the re-scrolling operation is a third scroll speed that is lower than the first scroll speed at the start of the touch. apparatus.

  7). The operation control unit changes the scroll speed in the re-scrolling operation according to the duration of the touch operation after the re-scrolling operation is started. The display device according to any one of the above.

  8). The operation control unit determines whether the touch position of the continuing touch operation has moved in a direction other than the scroll direction of the rescrolling operation during the rescrolling operation, and the scrolling direction of the rescrolling If it is determined that the direction has been moved in a direction other than the above, the fourth switching control is performed to switch the scrolling direction to the scrolling operation in the direction opposite to the scrolling direction of the re-scrolling. , 6, and 7. The display device as described in any one of 7.

9. A storage unit that stores an initial scroll position of an image displayed on the display surface at the start of the touch operation;
9. The display device according to 8, wherein the operation control unit stops the scroll operation when a scroll position reaches the scroll initial position during the scroll operation by the fourth switching control.

10. The scroll display control unit executes a scroll operation of scrolling at a scroll speed determined by the content of the scroll instruction;
The operation controller is
(1) a first switching control that switches the scroll operation to a re-scroll operation that is scrolled in a direction opposite to the scroll direction at the start of the touch operation when the start of the touch operation is detected;
(2) a second switching control for switching a scroll speed of the scroll operation to a second scroll speed different from the first scroll speed at the start of the touch operation when the start of the touch operation is detected;
(3) The scroll operation is temporarily stopped at the timing when the start of the touch operation is detected, and then the touch position moves in the opposite direction or the same direction as the scroll direction at the start of the touch operation with respect to the touch start position. To determine whether or not
When it is determined that the movement has been performed in the same direction, the re-scrolling operation is performed by switching to the re-scrolling operation that is scrolled in the same direction. Switching control,
2. The display device according to 1, wherein any one of the first to third switching controls is executed according to a scroll speed at the start of the touch operation.

11. The operation control unit is configured such that a scroll speed at the start of the touch operation is a high speed scroll faster than a first threshold, a low speed scroll lower than a second threshold smaller than the first threshold, or the second threshold or higher. To determine whether it is one of the medium speed scrolls below the first threshold,
If it is determined that the medium-speed scrolling, the first switching control is executed,
11. The method according to 10, wherein when the low-speed scrolling is determined, the second switching control is executed, and when the high-speed scrolling is determined, the third switching control is executed. Display device.

12 The image displayed on the display surface is an image in which a plurality of buttons are arranged in a scroll direction,
Furthermore, when the completion | finish of the said touch operation is detected, the selection control part which selects the function with respect to the said button in the touch position of this touch operation is provided, The said any one of 1-11 characterized by the above-mentioned. Display device.

13. A program for controlling a display device having a touch panel for displaying an image on a display surface and detecting a touch operation on the display surface by a user,
A first step of performing a scroll operation for scrolling an image displayed on the display surface in accordance with a user scroll instruction;
A second step of switching the scroll operation when the start of a touch operation on the touch panel is detected during the scroll operation;
A third step of stopping the scrolling operation switched in the second step when the end of the touch operation on the touch panel is detected;
A control program that causes a computer to execute.

14 A scroll display method executed on a display device that displays an image on a display surface and has a touch panel that detects a touch operation on the display surface by a user,
A first step of performing a scroll operation for scrolling an image displayed on the display surface in accordance with a user scroll instruction;
A second step of switching the scroll operation when the start of a touch operation on the touch panel is detected during the scroll operation;
A third step of stopping the scrolling operation switched in the second step when the end of the touch operation on the touch panel is detected;
A scroll display method comprising:

  15. 14. A computer-readable recording medium on which the control program according to 13 is recorded.

  According to the present invention, when the start of the touch operation is detected, the scroll operation is switched, and when the end of the touch operation is detected, the scroll operation is stopped to scroll the image displayed on the display surface. In this case, it becomes possible to accurately stop this at a desired position.

1 is a schematic front view illustrating a configuration of an image forming apparatus including a display device according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating a configuration of the image forming apparatus illustrated in FIG. 1. 3 is a schematic diagram illustrating a configuration of an operation display unit 103. FIG. 4 is an example of a display screen displayed on the touch panel 30. FIG. It is a figure which shows the control flow which the control part 101 performs. It is a control flowchart of the first switching control. It is explanatory drawing which showed the scroll operation of the screen in the touch panel 30 in the order of (a)-(d). It is a time chart explaining the motion of a screen. It is a time chart which concerns on a 1st modification. It is a control flow figure of the 2nd change control concerning a 2nd embodiment. It is a time chart which concerns on 2nd Embodiment. It is a control flow figure of the 3rd change control concerning a 3rd embodiment. It is explanatory drawing which showed the scroll operation of the screen in the touchscreen 30 which concerns on 3rd Embodiment in the order of (a)-(d). It is a control flow figure of the 4th change control concerning a 4th embodiment. It is a time chart which concerns on 4th Embodiment. (A) It is a control flow figure explaining a 2nd modification. (B) It is a control flow figure explaining a 3rd modification. It is a time chart which concerns on a 4th modification. It is a time chart which concerns on a 5th modification.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings and the present specification, the same elements are denoted by the same reference numerals, and redundant description is omitted. In addition, the dimensional ratios in the drawings are exaggerated for convenience of explanation, and may differ from the actual ratios.

(First embodiment: first switching control)
FIG. 1 is a schematic front view showing a configuration of an image forming apparatus including a display device according to an embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of the image forming apparatus shown in FIG. FIG. 3 is a schematic diagram illustrating a configuration of the operation display unit 103.

  As shown in FIGS. 1 and 2, the image forming apparatus 100 includes a control unit 101, a storage unit 102, an operation display unit 103, an ADF (Auto Document Feeder) 104, an image reading unit 105, a paper feeding unit 106, and an image forming unit. 107, a communication interface 108, and a post-processing unit 109. Note that the control unit 101, the storage unit 102, and the operation display unit 103 also function as a display device, and the control unit 101 controls scroll display control, switching operation control, and stop control related to a screen scroll operation in the display device, as will be described later. , And execute selection control.

  The control unit 101 includes a CPU (Central Processing Unit), and controls the above-described units and performs various arithmetic processes according to various programs. The storage unit 102 includes a ROM (Read Only Memory) that stores various programs and various data in advance, a RAM (Random Access Memory) that temporarily stores programs and data as a work area, and various types that control basic operations of the MFP 100. It consists of a hard disk that stores programs and various data.

  As shown in FIG. 3, the operation display unit 103 includes a touch panel 30 including a liquid crystal screen and a touch pad superimposed thereon, and hardware keys including a hardware scroll button 311, a numeric keypad 312, a start button 313, a stop button 314, and the like. 31 is provided. The touch panel 30 is an interface capable of multi-touch operation, which is simultaneous operation with a plurality of fingers, and accepts input by detecting the presence or absence of touch by one or a plurality of user's fingers or a touch pen and the touch position (coordinates). It is possible.

  Returning to FIG. The ADF 104 sequentially conveys the set plurality of documents one by one to a predetermined reading position of the image reading unit 105, and sequentially discharges the documents after image reading.

  The image reading unit 105 irradiates the original set at a predetermined reading position or the original conveyed to the predetermined reading position by the ADF 104 with a light source such as a fluorescent lamp, and reflects the reflected light with an imaging device such as a CCD image sensor. Photoelectric conversion is performed to generate image data from the electrical signal. The created image data is stored in the storage unit 102.

  The paper feeding units 106a to 106c accommodate recording media such as paper used for printing. A paper feeding unit 106 (a general term for 106a to 106c) sends out the stored paper to the image forming unit 107 one by one.

  The image forming unit 107 prints an image based on various data on a recording medium such as paper using a known image forming process such as an electrophotographic process including charging, exposure, development, transfer, and fixing processes. To do.

  The communication interface 108 is an interface for communicating with other devices such as a PC (personal computer), and uses standards such as Ethernet (registered trademark), token ring, FDDI (Fiber Distributed Data Interface).

  The post-processing unit 109 performs a finishing process on the printed paper conveyed from the image forming unit 107. Examples of the finishing process include a punching process in which a filing hole is formed in an end portion of the sheet and a folding process in which the sheet is folded from the center.

  Here, an example of a display screen displayed on the touch panel 30 of the operation display unit 103 will be described with reference to FIGS. 3 and 4. A plurality of buttons 3 (a general term for the buttons 3a to 3z and 3A to 3Z) are arranged in a predetermined direction (left and right in the example of FIGS. 3 and 4) on the upper part of the display surface of the touch panel 30. These buttons 3 are also referred to as icons and are setting buttons corresponding to a plurality of functions executable by the image forming apparatus 100 and buttons corresponding to the contents of data stored in the storage unit 102. .

  Examples of a plurality of functions that can be executed by the image forming apparatus 100 include a “background adjustment function” for removing show-through, an “automatic rotation function” for automatically rotating a scanned image, and a plurality of original sheets. There are “continuous scanning function” for continuous scanning and “book manuscript function” for book finishing. Examples of buttons corresponding to data contents include thumbnail images of image data stored in the storage unit 102, and examples of images indicating data types and file names.

  In the examples shown in FIGS. 3 and 4, only some buttons 3x to 3C (FIG. 3) or only the buttons 3a to 3f (FIG. 4) of the plurality of buttons 3a to 3Z arranged in the left-right direction are displayed. The buttons 3a to 3w (FIG. 3) and the buttons 3D to 3Z (FIG. 4) other than these are (virtually) outside the frame of the display surface (broken line) as shown in FIG. Therefore, it is not displayed on the display surface of the touch panel 30. These buttons can be sequentially displayed on the display surface by executing a scroll operation for scrolling the image.

  The scroll operation is executed by receiving a user's scroll instruction. As the scroll instruction, a flick operation of flipping a finger while touching the touch panel 30, a drag operation (also referred to as swipe) of sliding a finger while touching the touch panel, and a scroll button (not shown) of soft keys displayed on the touch panel 30 ) And a scroll button (see FIG. 3) provided on the hard key unit 31 is depressed by the user. Note that the scroll speed can be changed in multiple steps (low, medium, high) depending on the movement speed and distance of the finger in the flick operation and the duration of the push down in the case of pressing down the scroll button. May be.

  As shown in FIGS. 3 and 4, a slide gauge 36 is provided below the touch panel 30, and a slide bar 35 corresponding to the display content of the button 3 displayed on the touch panel 30 is displayed on the slide gauge 36. ing. FIG. 4A shows an arrangement position of the button 3 in the initial state. Since the buttons 3a to 3f at the left end of the array are displayed in the initial state, the slide bar 35 corresponds to the slide gauge. It is located at the left end in 36 areas. The size of the slide bar 35 generally corresponds to the ratio of the display number (for example, 6) to the total number (for example, 52) of the buttons 3 that can be scroll-displayed.

  When the user inputs a scroll instruction by flicking his / her finger to the left as shown in FIG. 4A, the control unit 101 scrolls the plurality of buttons 3 to the left. FIG. 4B shows the screen after scrolling.

  Next, the first switching control in the first embodiment will be described. 5 and 6 are diagrams illustrating a control flow executed by the control unit 101. FIG. The control unit 101 implements the processing shown in the control flow of FIGS. 5 and 6 when the CPU executes a program stored in the ROM.

  In step S11 of FIG. 5, scrolling is started by a scroll instruction from the user. Examples of the scroll instruction include a flick operation to the touch panel and a slide button depression as described above. In the following description of the present embodiment, the scroll speed is controlled to maintain the initial speed after the scroll operation is started at the initial speed determined by the scroll instruction. However, the present invention is not limited to this, and control may be performed so that the scroll speed is gradually decreased according to the elapsed time after the scroll instruction is issued.

  If a touch with the user's finger (or touch pen) on the touch panel 30 is detected while the scroll operation is being performed, the control unit 101 determines that the touch operation has started. When the touch operation is started (step S12: YES), the switching control of step S13 is subsequently executed.

  FIG. 6 is a control flowchart showing the first switching control (S13A) as a subroutine of step S13.

  In step S131, the scroll operation is temporarily stopped. In subsequent step S132, it is determined whether or not the elapsed time of the touch operation after the touch operation is started (hereinafter referred to as “touch duration”) is equal to or longer than a predetermined time tw.

  If the touch duration time is equal to or longer than the predetermined time tw, the scroll operation is switched to a re-scroll operation that is scrolled in the direction opposite to the scroll direction before the start of the touch operation in the subsequent step S133. For example, if the scroll direction before the start of the touch operation is the left direction in which the image moves from the right to the left, in step S133, the re-scrolling operation switched to the right direction in the opposite direction is performed, and the control flow returns to FIG. (return).

  Thereafter, in step S14, when it is detected that the touch operation is finished, that is, that the user's finger is released (separated) from the touch panel 30, the image is stopped and the scroll operation is finished (end) in the subsequent step S15. In the subroutine of FIG. 6, if the user's touch operation is completed before the touch continuation time exceeds the predetermined time tw (YES in step S134), the scroll end process is performed in step S15. The school operation ends without scrolling in the reverse direction of the stopped screen.

  7 and 8 are diagrams for explaining the movement of the screen when the control flows of FIGS. 5 and 6 are executed. FIG. 7 illustrates the screen scrolling operation on the touch panel 30 as shown in (a) to (d) of FIG. It is explanatory drawing shown in time series in order. FIG. 8 is a time chart in which the horizontal axis represents time t, the presence or absence of a touch operation (ON / OFF of touch detection) in the upper stage, and the scroll speed in the lower stage. Time t0 is the start timing of the scroll operation, time t1 , Te correspond to the start timing and end timing of the touch operation, respectively.

  Further, in FIG. 7 (the same applies to FIG. 13 described later), the button 3A indicated by the alphabet “A” among the plurality of buttons 3 is an image that the user wants to select or is looking for (hereinafter, “ The target image is referred to as a “target image”, and an operation for moving the image to the center of the display surface or directly below the user's finger is performed by a scroll operation.

  FIG. 7A shows a state in which the plurality of buttons 3 are scrolled leftward. This is a screen corresponding to step S11 in FIG. 5 and time t0 in FIG. The scroll speed at this time is + v1 as shown in FIG. In the following, the positive speed indicates scrolling in the left direction, and the negative speed indicates scrolling in the right direction.

  FIG. 7B shows a state in which the screen is paused when the start of the touch operation is detected. This is a screen corresponding to step S131 in FIG. 6 and time t1 in FIG. As shown in FIG. 8, the scroll speed is changed from speed + v1 to zero at time t1.

  FIG. 7C shows a state in which the re-scrolling operation in the reverse direction is started because the touch duration time is equal to or longer than the predetermined time tw. This is a screen corresponding to step S132 in FIG. 6 and time t2 in FIG. As shown in FIG. 8, at a time t2 when a predetermined time tw has elapsed from the time t1 when the touch operation is started, the scroll speed is changed from zero to the speed −v1.

  FIG. 7D shows a state in which the user releases a finger from the touch panel 30 and the screen is stopped accordingly. This is a screen corresponding to YES in step S14 in FIG. 5 and time te in FIG. As shown in FIG. 8, at time te, the detection state of the touch panel 30 is switched to OFF in response to the finger release operation. Therefore, the control unit 101 determines that the touch operation has ended, and the scroll speed is reduced from speed −v1 to zero. Has been changed.

  As described above, according to the first embodiment, when the image is scroll-displayed, when the touch operation by the user is started and the duration time of the touch operation becomes a predetermined time or more, the scroll in the reverse direction is performed. By switching to the operation and ending the touch operation when the target image reaches the desired position, the target image can be easily and accurately stopped at the desired stop position. In particular, when many images are arranged and scrolled, even if the target image passes the stop position as shown in FIG. It is possible to accurately stop at the position.

(First modification)
A first modification will be described with reference to FIG. FIG. 9 is a time chart according to the first modification.

  Compared to the first embodiment of FIG. 8, in the modification shown in FIG. 9, when the touch operation is started, the reverse operation is immediately performed at the speed −v1 without waiting for the pause and the elapse of the predetermined time tw. A scroll operation is started. This corresponds to the control in which the processes in steps S131 and S132 in FIG. 6 are omitted. In the first modification, it is not necessary to wait for the predetermined time tw, so that it is possible to shorten the operation time until the end of the scroll operation as compared with the first embodiment. Even in such a modification, it is possible to accurately stop the target image at a desired position as in the first embodiment.

(Second embodiment: second switching control)
Next, a second embodiment will be described based on FIGS. 10 and 11. Except for the configuration shown in the figure, the configuration is the same as that of the first embodiment shown in FIGS.

FIG. 10 is a control flowchart of the second switching control (S13B) as a subroutine of step S13 in FIG. The control unit 101 implements the processing shown in the control flow of FIG. 10 when the CPU executes a program stored in the ROM.
In the second switching control, when the start of the touch operation is detected (step S12 in FIG. 5), the scroll speed is changed from the first speed + v1 so far to the second speed + v2 different from the previous speed in step S21. Control to change to.

  FIG. 11 is a time chart according to the second embodiment. As shown in FIG. 11, after changing to speed + v2 at time t1, until the time te when the touch operation ends, the changed speed + v2 is used. A scroll operation is performed.

  In the example shown in the figure, the second speed + v2 after the change has been faster than the first speed + v1 so far, but is not limited to this, and may be set to a slow speed.

  As described above, according to the second embodiment, when the image is scroll-displayed, the scroll speed is switched to the second speed at the timing when the user's touch operation is started, and the target image reaches the desired position. By terminating the touch operation at the timing, the target image can be easily and accurately stopped at a desired position. In particular, when many images are arranged and scroll-displayed, control is performed as in the second embodiment when a touch operation is started before the target image reaches a desired position because the scroll speed is slow. Thus, it is possible to continue the scrolling operation and accurately stop at a desired position.

(Third embodiment: third switching control)
Next, a third embodiment will be described based on FIG. 12 and FIG. Except for the configuration shown in the figure, the configuration is the same as that of the first embodiment shown in FIGS.

  FIG. 12 is a control flowchart showing the third switching control (S13C) as a subroutine of step S13 of FIG. The control unit 101 implements the processing shown in the control flow of FIG. 12 when the CPU executes a program stored in the ROM.

  FIG. 13 is an explanatory diagram showing the screen scrolling operation on the touch panel 30 in the order of (a) to (d). In the third switching control, when the start of the touch operation is detected in step S12 in FIG. 5, the scrolling operation is temporarily stopped in the subsequent step 31 (FIG. 13B).

  In step S32, it is determined whether or not the touch position of the touch operation started in step S12 has been shifted with respect to the touch start position. The shift here is an operation of sliding the finger on the touch panel 30 without being released (separated) from the touch panel 30 once after the start of the touch operation, and corresponds to a so-called drag operation or swipe operation. . If the user's finger is released from the touch panel 30 during the shift, the control unit 101 determines in step S35 that the touch operation has ended, proceeds to step S15 in FIG. 5, and ends the scroll operation (end). ).

  If the user's finger is shifted without being released once since the start of the touch operation in step S12, whether or not the shift direction is opposite to the scroll direction until immediately before the temporary stop in step S31 in step S32. Determine whether. In the example of FIG. 13, since the scroll is performed in the left direction in FIG. 13A, when the user performs a gesture operation to slide the finger from left to right as illustrated in FIG. 13C, The control unit 101 can determine that a rightward shift, that is, a finger shift in the reverse direction has been performed (step S33: YES). Therefore, the re-scrolling operation is performed by scrolling in the reverse direction in the next step S34. On the other hand, when the user performs a gesture operation that slides his / her finger from right to left, a shift in the same direction as the scroll direction at the start of the touch operation (hereinafter referred to as “positive direction”) is performed. Therefore, the control unit 101 determines that the shift is not in the reverse direction (step S33: NO), and executes a re-scrolling operation that is scrolled in the forward direction in the next step S36.

  After step S34 or S35 in FIG. 12, the process returns to FIG. 5, and by detecting the end of the touch operation in subsequent step S14, the image is stopped in step S15 and the scroll operation is ended (END).

  In the third embodiment of the present application, for example, as illustrated in FIG. 13B, the user slightly touches the touch panel 30 with a finger and the target image (3A) passes the desired stop position. If the target image is shifted, the target image can be scrolled in the reverse direction by shifting the finger in the reverse direction. If the desired stop position has not been reached, the target image can be scrolled in the forward direction by shifting the finger in the forward direction. Thereafter, the target image can be accurately stopped at the target position by releasing the finger when the target image reaches the target position.

(Fourth embodiment: fourth switching control)
Next, a fourth embodiment will be described with reference to FIG. In the fourth embodiment, the control is performed after the re-scrolling operation of the first embodiment (step S133 in FIG. 6) or the re-scrolling operation of the third embodiment (steps S34 and S36 in FIG. 12) is started. While the re-scrolling operation is being performed, the scroll direction is further switched by the user's gesture operation performed via the touch panel 30. This will be described below.

  Here, the scroll direction of the re-scrolling operation is the direction opposite to the scroll direction at the start of the touch operation (for example, the right direction) if the first step in the figure is step S133 or step S34. The forward direction (for example, the left direction).

  When the user's finger has not been released from the start of the touch operation and is further shifted during the re-scrolling operation (step S41: YES), the shift direction is determined in step S42. Note that the shift in step S41 is determined by whether or not the finger touch position at the time when the re-scrolling operation is started is used as a reference position, and whether or not the finger moves in any direction with respect to the reference position. .

  In step S42, it is determined whether the shift direction is other than the re-scrolling direction. If the direction of re-scrolling is the reverse direction (for example, the right horizontal direction), whether or not the reverse direction is the reference direction and the relative difference in the shift direction with respect to the reference direction is a predetermined angle or more (for example, ± 30 degrees or more). Determine whether. For example, as shown in FIG. 7, if the re-scrolling direction is the right horizontal direction, the vertical direction or the left direction is greater than a predetermined angle with respect to the right horizontal direction, so the shift direction is determined to be other than the re-scrolling direction. (Step S42: YES).

  In step S43, the scroll operation is changed to a direction opposite to the re-scroll direction. If the re-scrolling operation is scrolling in the reverse direction (for example, right direction) (steps S133 and S34), in step S43, the scrolling operation is changed to the normal direction (left direction), and the re-scrolling operation is performed in the normal direction (for example, left direction). If scrolling (step S36), in step S43, the scroll operation is changed to the reverse (rightward) scrolling operation.

  Step S44 and subsequent steps are controls for terminating the scroll operation. In the embodiments described so far, the scroll operation is terminated with the end of the user's touch operation as a trigger. However, in the following, the control unit 101 automatically performs the scroll operation before the touch operation is terminated in order to prevent excessive return. It is control to finish automatically.

  In step S44, it is determined whether or not the scroll position has reached the scroll initial position at the start of the operation by the scroll operation in step S43. Here, in the example of FIG. 7 described above, the screen of FIG. 7B at the start of the touch operation corresponds to the scroll initial position. The information on the initial scroll position (for example, the arrangement coordinates of the button 3) is stored in the storage unit 102 at the timing when the control unit 101 detects the start of the touch operation (for example, YES in S12 of FIG. 5).

  When the touch operation is ended by releasing the finger before the user reaches the initial position (step S47: YES), the scroll operation is ended at the end timing of the touch operation as in the previous control ( Step S45). On the other hand, if the initial position is reached before the touch operation ends (S44: YES), the control unit 101 automatically ends the scroll operation (step S45).

  For example, in the example of FIG. 7, when the scroll operation is performed in the left direction in step S <b> 43, the scroll operation is automatically performed when the scrolled button 3 arrives at the arrangement position corresponding to the screen of FIG. Will be stopped.

  FIG. 15 is a time chart according to the fourth embodiment, and shows the operation when the control flow of FIG. 14 is executed following step S133 of FIG. 6 according to the first embodiment. is there. In the figure, the time t0 to t2 is the same as the time chart of FIG. 8 according to the first embodiment, and after time t2, the scroll operation in the reverse direction is executed at the speed −v1. Further, the screen position at time t1 corresponds to the initial scroll position.

  In response to the user performing a gesture operation to shift his / her finger in a direction other than the reverse direction at time t <b> 3 (step S <b> 42: YES), the operation is switched to the scrolling operation in the positive direction of speed + v <b> 1. At this time, the amount of movement relative to the initial scroll position is the amount of movement from time t1 to t3.

  In the figure, at time t4, the forward movement amount from time t3 to time t4 is the same as the backward movement amount from time t2 to t3. That is, since the scroll position has reached the initial position at time t4 (step S44: YES), the control unit 101 changes the speed from + v1 to zero and ends the scroll operation.

  As described above, in the fourth embodiment, when the re-scrolling operation is mistakenly performed due to an operation error or misplacement of the target image, the recovery is performed by shifting the finger to a direction other than the re-scrolling scroll direction. It can be executed by operation, and correction of mistakes can be easily performed. Further, in order to prevent the recovery from being scrolled excessively, the recovery is automatically stopped when the initial position is reached, and it is possible to prevent the wrong operation from being continued.

(Second and third modifications)
FIGS. 16A and 16B are control flow diagrams for explaining the second and third modifications, respectively. The control unit 101 implements the processing shown in the control flow of FIG. 16 when the CPU executes a program stored in the ROM.

  In the second modification, any one of the first switching control (FIG. 6), the second switching control (FIG. 10), and the third switching control (FIG. 12) is performed according to the scroll speed at the start of the touch operation. Is to select. This will be described below. In the figure, the same reference numerals are assigned to the controls common to those in FIG.

  In step S11a, the control unit 101 starts the scroll operation at the initial speed determined based on the content of the user's scroll instruction. For example, the initial scroll speed is determined according to the moving distance and moving speed in the flick operation by the user.

  When the control unit 101 determines in step S12 that the touch operation has been started by detecting the touch of the user's finger on the touch panel 30, the control unit 101 determines the scroll speed vx at the start of the touch operation in subsequent step S125. The scroll speed vx is acquired and compared with the first threshold speed vc1 and the second threshold speed vc2 (where vc1> vc2) to determine whether the speed is high speed, medium speed, or low speed. For example, if vx> vc1, it is determined that the speed is high, if vc1 ≧ vx ≧ vc2, the medium speed, and if vc2> vx, the speed is low.

  Note that the scroll speed at the start of the touch operation is the same as the initial speed if it is controlled to maintain the initial speed, and is controlled so as to gradually decrease the scroll speed according to the elapsed time after the scroll instruction is issued. If there is, it will be slower than the initial speed.

  If it is determined in step S125 that the speed is medium, the first switching control (FIG. 6) in step S13A is executed. If it is determined that the speed is low, the second switching control (FIG. 10) in step S13B is executed. If determined, the third switching control (FIG. 12) in step S13C is executed.

  After that, step S14 and step S15 are executed as in FIG.

  In the case of medium speed, the target image often passes the touch position (target stop position) at the start of the touch operation. In this case, the target image is easily moved to the target stop position by scrolling in the reverse direction by the first switching control. The image can be stopped.

  In the case of low speed, the touch operation is often started before the target image reaches the touch position. In this case, the second switching control is used to change the speed to + v2 which is still lower in the positive direction. Thus, the target image can be easily stopped at the target stop position.

  In the case of high speed, there is a case where the image being scrolled cannot be followed with eyes. In such a case, it is difficult to determine whether the target image has passed or has not yet reached. In such a case, the scroll operation is temporarily stopped at the start timing of the touch operation, and the user can easily move to the target stop position by re-scrolling by shifting the finger in the desired scroll direction. The image can be stopped.

  In the above-described embodiment, the process of stopping the scroll is performed in association with the release of the user's finger. However, as in the third modification shown in FIG. 16B, the process is further associated with this release. If there is a button at the touch position (directly below the finger) when releasing, a process for selecting this button may be performed together (step S50 in FIG. 16B). For example, if the button to be scrolled on the display surface is a setting button for a function that can be executed by the image forming apparatus 100, the finger is released to stop scrolling, and the function for the setting button is selected. To do. If the button is a thumbnail image representing the contents of the file or an image indicating the type of data or the file name, the file corresponding to the selected button is displayed. In this way, it is possible to simultaneously execute two processes, a scroll stop process and a button selection process, in association with the one-action action of releasing the user's finger, further improving the operability. Can be planned.

(4th, 5th modification)
17 and 18 are time charts according to the fourth and fifth modified examples. In the modification of FIG. 17, the scroll speed of the re-scrolling operation is changed to a speed −v3 that is slower (smaller in absolute value) than the speed of + v1 as compared with the first and third embodiments. In FIG. 18, the scroll speed of the re-scrolling operation is decreased according to the duration of the touch operation after the re-scrolling operation is started. In the figure, since the lower limit speed −V4 is reached at time t5, the scrolling is continued at a constant speed until time te. Thus, the target image can be easily stopped at the target position by setting the scroll speed in the re-scrolling operation to be lower than the scrolling speed + v1 in the previous scrolling operation.

  As mentioned above, although the Example which concerns on this invention was described with reference to drawings, this invention is not limited only to embodiment mentioned above, In the range of a claim, it can change variously.

  For example, the fourth embodiment and other modified examples may be combined and applied to the second modified example, or may be applied in combination.

  For example, in the above-described embodiment, a tablet terminal may be used. The means and method for performing various processes in the image forming system according to the above-described embodiment can be realized by either a dedicated hardware circuit or a programmed computer. The program may be provided by a computer-readable recording medium such as a flexible disk and a CD-ROM, or may be provided online via a network such as the Internet. In this case, the program recorded on the computer-readable recording medium is usually transferred to and stored in a storage unit such as a hard disk. The program may be provided as a single application software, or may be incorporated in the software of the apparatus as one function of the image forming system.

DESCRIPTION OF SYMBOLS 100 Image forming apparatus 101 Control part 102 Memory | storage part 103 Operation display part 30 Touch panel 31 Hard key 3, 3a-3z, 3A-3Z button

Claims (15)

A touch panel that displays an image on a display surface and detects a touch operation on the display surface by a user;
A scroll display control unit that performs a scroll operation of scrolling an image displayed on the display surface in accordance with a user scroll instruction;
An operation control unit that switches the scroll operation when the start of a touch operation on the touch panel is detected during the scroll operation;
A stop control unit that stops the scrolling operation switched by the operation control unit when the end of the touch operation on the touch panel is detected;
A display device comprising:   The operation control unit performs first switching control for switching the scroll operation to a re-scroll operation that is scrolled in a direction opposite to the scroll direction at the start of the touch operation when the start of the touch operation is detected. The display device according to claim 1.   The operation control unit temporarily stops the scroll operation at a timing when the start of the touch operation is detected, and then switches to the re-scroll operation when the touch operation is continued for a predetermined time or more. The display device according to claim 2.   The operation control unit switches a scroll speed of the scroll operation to a second scroll speed different from the first scroll speed at the start of the touch operation when the start of the touch operation is detected. The display device according to claim 1, wherein control is performed. The operation controller is
At the timing when the start of the touch operation is detected, the scroll operation is paused,
Thereafter, it is determined whether or not the touch position has moved in the opposite direction or the same direction as the scroll direction at the start of the touch operation with respect to the touch start position,
When it is determined that the movement has been performed in the same direction, the re-scrolling operation is performed by scrolling in the same direction, and when it is determined that the movement has been performed in the reverse direction, the re-scrolling operation is performed by scrolling in the reverse direction. The display device according to claim 1, wherein switching control is performed.   6. The scroll speed in the re-scrolling operation is a third scroll speed that is lower than the first scroll speed at the start of the touch. 6. Display device.   The said operation control part changes the scroll speed in the said re-scrolling operation | movement according to the continuation time of the touch operation after starting the said re-scrolling operation | movement. The display device according to any one of the above.   The operation control unit determines whether the touch position of the continuing touch operation has moved in a direction other than the scroll direction of the rescrolling operation during the rescrolling operation, and the scrolling direction of the rescrolling A fourth switching control is performed to switch the scroll direction to a scroll operation in which the scroll direction is the direction opposite to the scroll direction of the re-scroll when it is determined that it has moved in a direction other than The display device according to any one of 5, 6, and 7. A storage unit that stores an initial scroll position of an image displayed on the display surface at the start of the touch operation;
The display device according to claim 8, wherein the operation control unit stops the scroll operation when a scroll position reaches the scroll initial position during the scroll operation by the fourth switching control. The scroll display control unit executes a scroll operation of scrolling at a scroll speed determined by the content of the scroll instruction;
The operation controller is
(1) a first switching control that switches the scroll operation to a re-scroll operation that is scrolled in a direction opposite to the scroll direction at the start of the touch operation when the start of the touch operation is detected;
(2) a second switching control for switching a scroll speed of the scroll operation to a second scroll speed different from the first scroll speed at the start of the touch operation when the start of the touch operation is detected;
(3) The scroll operation is temporarily stopped at the timing when the start of the touch operation is detected, and then the touch position moves in the opposite direction or the same direction as the scroll direction at the start of the touch operation with respect to the touch start position. To determine whether or not
When it is determined that the movement has been performed in the same direction, the re-scrolling operation is performed by switching to the re-scrolling operation that is scrolled in the same direction. Switching control,
The display device according to claim 1, wherein any one of the first to third switching controls is executed according to a scroll speed at the start of the touch operation. The operation control unit is configured such that a scroll speed at the start of the touch operation is a high speed scroll faster than a first threshold, a low speed scroll lower than a second threshold smaller than the first threshold, or the second threshold or higher. To determine whether it is one of the medium speed scrolls below the first threshold,
If it is determined that the medium-speed scrolling, the first switching control is executed,
11. The third switching control is executed when it is determined that the low-speed scrolling is performed, and the third switching control is executed when it is determined that the high-speed scrolling is performed. Display device. The image displayed on the display surface is an image in which a plurality of buttons are arranged in a scroll direction,
Furthermore, when the completion | finish of the said touch operation is detected, the selection control part which selects the function with respect to the said button in the touch position of this touch operation is provided, The Claim 1 characterized by the above-mentioned. Display device. A program for controlling a display device having a touch panel for displaying an image on a display surface and detecting a touch operation on the display surface by a user,
A first step of performing a scroll operation for scrolling an image displayed on the display surface in accordance with a user scroll instruction;
A second step of switching the scroll operation when the start of a touch operation on the touch panel is detected during the scroll operation;
A third step of stopping the scrolling operation switched in the second step when the end of the touch operation on the touch panel is detected;
A control program that causes a computer to execute. A scroll display method executed on a display device that displays an image on a display surface and has a touch panel that detects a touch operation on the display surface by a user,
A first step of performing a scroll operation for scrolling an image displayed on the display surface in accordance with a user scroll instruction;
A second step of switching the scroll operation when the start of a touch operation on the touch panel is detected during the scroll operation;
A third step of stopping the scrolling operation switched in the second step when the end of the touch operation on the touch panel is detected;
A scroll display method comprising:   A computer-readable recording medium on which the control program according to claim 13 is recorded.