JP2007240889A - Scrolling control device and scrolling control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To freely adjust either of acceleration and deceleration during a screen scrolling by a single button. <P>SOLUTION: Such control is performed that a scrolling speed is increased in accordance with extension of the duration of depression of a scroll button and a scrolling stop time is shortened in accordance with the rise of the scrolling speed during a pause of depression. Such control is performed that the scrolling speed is increased in accordance with the reduction in average value of operation intervals of the scroll button and the scrolling stop time is shortened in accordance with the rise of the scrolling speed during a pause of depression. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a scroll control device and a scroll control method for scrolling information having a size larger than a displayable size in accordance with a user instruction on a display screen of an electronic control device or the like.

  In recent years, electronic control devices typified by personal computers have become increasingly popular due to miniaturization such as mobile phones, portable music players, and PDAs (Personal Digital Assistants). What is common to all electronic control devices is that the user visually acquires electronic information through the display screen. The size of a display screen in such an electronic control device is naturally limited, and a scroll operation on the display screen is indispensable for browsing a large amount of information. With the recent increase in storage capacity, the frequency of use of scroll operations has increased remarkably.

  However, the feeling of use of the scroll operation in today's electronic control devices is not always satisfactory. This is because a complicated operation is required to display desired information. For example, if you are editing a large program with an editor on a personal computer and want to move it far behind the current position of the cursor, you must keep pressing the page down key or drag the scroll bar knob downward with the mouse. Don't be. Alternatively, when displaying a desired song from a large list of songs on a portable music player, the song advance button must be pressed many times.

  In Patent Document 1 below, paying attention to this problem, an attempt is made to solve the problem by installing a roller in the device, and the scroll speed can be adjusted by switching between line scroll and page scroll according to the rotation speed of the roller. . However, since a separate roller is attached to the conventional device, a physical space must be secured, which is disadvantageous for a portable terminal that is desired to be downsized. In addition, the cost of installing the roller is also required.

  In Patent Document 2 below, this problem is attempted using a touch panel, a vertically long rectangular area is prepared for scroll operation, and the scroll direction is determined depending on whether the touched position is above or below the center. . Further, the scroll speed is determined according to the distance from the center. However, in this case as well, the cost for attaching the touch panel is increased.

Moreover, in the following Patent Document 3, an attempt is made to solve the problem without providing additional components in the conventional device. A scroll button such as a cross key is used to increase the scroll speed according to the long press keeping time. Once started, scrolling continues automatically after the button is released, and can be stopped by pressing another button. However, with this method, it is impossible to freely adjust the speed of acceleration / deceleration during screen scrolling. In order to browse information more efficiently, it is desirable to move at a high speed by fast scrolling when desired information is far away from the display area, and to scroll at a low speed when approaching. In such a case, it is necessary to be able to freely accelerate / decelerate the scroll speed.
JP 2002-169639 A JP 2005-190126 A JP 2003-162356 A

  As described above, in the conventional scroll control method, it is impossible to freely adjust the speed of acceleration / deceleration during screen scrolling with a single button without providing any special parts.

  In view of the above-described problems of the prior art, the present invention provides a scroll control device and a scroll that can freely adjust the speed of acceleration / deceleration during screen scrolling with a single button without providing any special parts. An object is to provide a control method.

In order to achieve the above object, the present invention provides a scroll control device for scrolling a screen displayed on a display device by operating a scroll button of an input device.
Means for storing a continuous pressing time of the scroll button;
When it is detected that the stored continuous pressing time exceeds a predetermined time, control is performed to increase the scroll speed of the display screen according to the increase in the continuous pressing time, while the scroll button is continuously pressed. Control means for controlling to stop the scrolling after reducing the scrolling speed for a time calculated according to the scrolling speed when the operation is stopped when detecting that the operation is stopped And

In order to achieve the above object, the present invention provides a scroll control device for scrolling a screen displayed on a display device by operating a scroll button of an input device.
Means for storing the operation interval time of the scroll button;
When it is detected that the average value of the stored operation interval time at a certain time is shorter than a predetermined time, the scroll speed of the display screen is increased according to the decrease of the average value of the operation interval time. On the other hand, when it is detected that the continuous pressing operation of the scroll button is stopped, the scrolling speed is reduced by the time calculated according to the scrolling speed at the time of stopping the operation, and then the scrolling is stopped. And a control means for controlling.

In order to achieve the above object, the present invention provides a scroll control method for scrolling a screen displayed on a display device by operating a scroll button of an input device.
Storing a continuous pressing time of the scroll button;
When it is detected that the stored continuous pressing time exceeds a predetermined time, control is performed to increase the scroll speed of the display screen according to the increase in the continuous pressing time, while the scroll button is continuously pressed. And a step of controlling to stop the scrolling after reducing the scrolling speed by a time calculated according to the scrolling speed at the time of stopping the operation when it is detected that the operation is stopped. To do.

In order to achieve the above object, the present invention provides a scroll control method for scrolling a screen displayed on a display device by operating a scroll button of an input device.
Storing the operation interval time of the scroll button;
When it is detected that the average value of the stored operation interval time at a certain time is shorter than a predetermined time, the scroll speed of the display screen is increased according to the decrease of the average value of the operation interval time. On the other hand, when it is detected that the continuous pressing operation of the scroll button is stopped, the scrolling speed is reduced by the time calculated according to the scrolling speed at the time of stopping the operation, and then the scrolling is stopped. And a step of controlling.

  According to the scroll control device and the scroll control method of the present invention, it is possible to freely adjust the speed of acceleration / deceleration during screen scrolling with a single button without providing any special parts.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an electronic control device including an embodiment of a scroll control device according to the present invention.

  In the electronic control device 100 shown in FIG. 1, when a scroll button (not shown) of the input device 101 is pressed, the processor 102 causes the operation history storage unit 105 to execute operation contents such as up and down and the pressed time continuously pressed. The operation interval is recorded as an operation history. The scroll control unit 103 is always operating, and determines scroll contents while referring to the operation history storage unit 105 and the information storage unit 106 that stores display content. Based on the determined scroll content, the display control unit 104 updates the display unit 107 with reference to the information storage unit 106.

  The scroll contents determined by the scroll control unit 103 will be described. The system has a state called a scroll mode. When the scroll mode is ON (on), automatic scrolling according to a variable scroll speed is performed. I do. There are three scroll contents to be determined. These are the ON / OFF state of the scroll mode, the scroll speed if ON, the presence or absence of line scroll execution if OFF, and the scroll direction.

  FIG. 2 is an explanatory diagram showing scroll control according to the present invention. The content 200 represents the entire content, and only the display area 201 is displayed on the display unit 107. There are N contents (0, 1, 2,..., N−1), and H display amounts are displayed from the display start position P. The scrollable range is from where the top of the content is located at the upper end of the display area 201 to where the last N-1 of the content is located at the lower end of the display area 201 below. That is, 0 ≦ P ≦ N−H. When scrolling is executed, the display area 201 moves to the display area 202 after scrolling. At this time, the display area 201 is moved at a scroll speed v when the scroll mode is ON, and by a predetermined one-line movement amount when the scroll mode is OFF.

  The operation will be described below using the flowchart shown in FIG. At the start of the operation (step S310), the scroll mode is in the OFF state, and a line scroll command is issued (step S321) when the user presses the button (step S311), and the line scroll (step S331) is performed. .

<Explanation of speed adjustment>
When the user performs a button continuous pressing (long pressing) operation (step S312) and the button continuous pressing time exceeds a predetermined time, the scroll mode is turned on (step S322), and automatic scrolling is started (step S332). At this time, the scrolling is started at a predetermined scroll start speed vstart (Vmin <vstart <Vmax) set in advance. Here, the minimum scroll speed Vmin can be arbitrarily set, and the maximum scroll speed Vmax is automatically calculated from the content amount N and the display amount H. For example, if it takes an arbitrary minimum crossing time Tmin_across to scroll the whole at the maximum scrolling speed Vmax, the maximum scrolling speed Vmax is obtained by (N−H) / Tmin_across. In order to turn on the scroll mode, means other than a long press may be used. For example, it is considered that the scroll mode is turned on when the average value of the operation interval time in a certain time is shorter than a predetermined time. It is done.

  In the scroll mode ON state, the scroll speed v can be adjusted by two kinds of operations, that is, continuous pressing (long press) and continuous pressing (a plurality of short presses) of the scroll button (steps S312 and S313). The scroll speed v at the time of continuous pressing (long pressing) is calculated by the curve and formula shown in FIG. In FIG. 4, 400 indicates a pattern (graph) of the speed v with respect to the continuous pressing time t1, and 401 indicates a differential thereof, that is, a pattern of acceleration a. This pattern 400 should be set so as to be natural for human senses. Here, the scroll speed v is related to the pressing duration t1 so that the scroll speed v increases as the continuous pressing time t1 increases. It is expressed by a quadratic formula. This expression may be exponential. When the acceleration continues from the minimum scroll speed Vmin, the speed v reaches the maximum scroll speed Vmax over an arbitrary maximum acceleration time Vmax_accel. When the continuous pressing time t1 exceeds the maximum acceleration time Vmax_accel, the maximum scroll speed Vmax is fixed.

  FIG. 5 shows a curve 500 and an equation of velocity v-acceleration a derived from FIG. The acceleration a can be uniquely calculated according to the current scrolling speed v by the equation of FIG. In the case where the scroll speed v is adjusted by continuous pressing described later and then accelerated again by continuous pressing, the acceleration a is similarly determined according to the speed v and accelerated from the current scroll speed v.

  The scroll speed at the time of continuous pressing (a plurality of short presses) is calculated using a speed pattern 600 representing the pressing interval moving average t2 -speed v shown in FIG. In FIG. 6, reference numeral 600 denotes a speed pattern with respect to the average value of pressing intervals t (pressing interval moving average) t2. A pattern is drawn in which the button is set at a high speed when the button is continuously pressed at a fine interval and is set at a low speed when the button is pressed at a large interval. The pressing interval moving average t2 is the minimum scroll speed Vmin at the maximum value Tmax_int, and the maximum scroll speed Vmax is at the minimum value Tmin_int. Thus, the speed v can be calculated uniquely according to the pressing interval moving average t2.

<Description of stop operation>
Thereafter, the user stops the button operation (step S314 in FIG. 3), and when a predetermined stop time has elapsed from the last operation, the scroll mode is changed to the OFF state (step S325), and the scrolling is stopped (step S333). The time tstop until the scrolling is stopped is calculated according to the current scrolling speed v. 601 in FIG. 6 is a pattern representing a stop time tstop corresponding to the speed v. The pattern 601 is obtained by translating the pattern 600 in the time direction by a time margin Tmargin. FIG. 7 shows a pattern 700 and an equation of speed v-stop time tstop derived from FIG. By using the formula of FIG. 7, the stop time tstop corresponding to the current scroll speed v can be calculated uniquely.

<Description of flowchart>
Hereinafter, description will be made with reference to the flowchart shown in FIG. After the initialization process of each parameter (step S801) is performed, scroll control is always executed until an end command (step S802) is issued. If the scroll mode is ON in step S803, the process proceeds to step S804, and only when a key event occurs, the process of storing the continuous pressing time t1 and the pressing interval t for obtaining the pressing interval moving average t2 as the operation history ( Step S805) is executed, and then scroll mode end determination (step S806) is performed. As a result of the determination, if it is in the ON state, the process of calculating the scroll speed v based on the continuous pressing time t1 and the pressing interval moving average t2 (step S807) and the scrolling process (step S808) are performed. If the scroll mode is OFF in step S803, if a key event occurs (Y in step S810), operation history storage (step S811) is executed as in step S804, and then scroll mode entry determination (step S812) is performed. I do. If the scroll mode is OFF, line scroll processing (step S813) is performed. If the scroll mode is ON, scroll speed calculation (step S807) and scroll processing (step S808) are performed. As described above, the pressing time t1 of the button operation and the pressing interval t for obtaining the pressing interval moving average t2 are held as the operation history, and the scroll speed v is changed at any time according to the value calculated from the operation history. Thus, the scroll speed can be arbitrarily changed at any time by operating a single button.

It is a block diagram which shows the electronic control apparatus provided with one Embodiment of the scroll control apparatus which concerns on this invention. It is explanatory drawing which shows the scroll control in this invention. It is a flowchart for demonstrating the scroll process of the electronic control apparatus of FIG. It is explanatory drawing which shows the time-speed graph used for calculation of scroll speed, when performing button continuous press in scroll mode. It is explanatory drawing which shows the speed-acceleration graph used for calculation of scroll speed, when performing button continuous press in scroll mode. It is explanatory drawing which shows the speed pattern used for calculation of a scroll speed, when performing button press continuously in scroll mode. It is explanatory drawing which shows the pattern of the speed-stop time used in order to calculate scroll stop time according to the present scroll speed. It is a flowchart for demonstrating scroll speed control of the electronic control apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Electronic control apparatus 101 Input device 102 Processor 103 Scroll control part 104 Display control part 105 Operation history memory | storage part 106 Information storage part 107 Display part

Claims (4)

In a scroll control device that scrolls a screen displayed on a display device by operating a scroll button of an input device,
Means for storing a continuous pressing time of the scroll button;
When it is detected that the stored continuous pressing time exceeds a predetermined time, control is performed to increase the scroll speed of the display screen according to the increase in the continuous pressing time, while the scroll button is continuously pressed. Control means for controlling to stop the scrolling after decelerating the scrolling speed for a time calculated according to the scrolling speed when the operation is stopped when detecting that the operation has been stopped;
A scroll control device comprising the scroll control device. In a scroll control device that scrolls a screen displayed on a display device by operating a scroll button of an input device,
Means for storing the operation interval time of the scroll button;
When it is detected that the average value of the stored operation interval time at a certain time is shorter than a predetermined time, the scroll speed of the display screen is increased according to the decrease of the average value of the operation interval time. On the other hand, when it is detected that the continuous pressing operation of the scroll button is stopped, the scrolling speed is reduced by the time calculated according to the scrolling speed at the time of stopping the operation, and then the scrolling is stopped. Control means for controlling
A scroll control device comprising the scroll control device. In a scroll control method for scrolling a screen displayed on a display device by operating a scroll button of an input device,
Storing a continuous pressing time of the scroll button;
When it is detected that the stored continuous pressing time exceeds a predetermined time, control is performed to increase the scroll speed of the display screen according to the increase in the continuous pressing time, while the scroll button is continuously pressed. A step of controlling to stop the scrolling after reducing the scrolling speed for a time calculated according to the scrolling speed at the time of stopping the operation when it is detected that the operation is stopped;
A scroll control method characterized by comprising: In a scroll control method for scrolling a screen displayed on a display device by operating a scroll button of an input device,
Storing the operation interval time of the scroll button;
When it is detected that the average value of the stored operation interval time at a certain time is shorter than a predetermined time, the scroll speed of the display screen is increased according to the decrease of the average value of the operation interval time. On the other hand, when it is detected that the continuous pressing operation of the scroll button is stopped, the scrolling speed is reduced by the time calculated according to the scrolling speed at the time of stopping the operation, and then the scrolling is stopped. The step of controlling
A scroll control method characterized by comprising:

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