JP2004303019A - Display control device and portable communication terminal mounted with display controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display controller for easily controlling the movement of display in a small space. <P>SOLUTION: This display controller consists of a touch pad 103 for receiving an input through a pad face, a touch pad control part 104 and a control part 105. Then, the display controller successively detects the input position to the pad face, and concerning each input position successively detected after the first input position is detected, calculates a vector with the input position as an end point and with the previously detected input position as a start point, and decides whether an angle made by the vector at each input position and the vector at the previously detected input position is larger than a predetermined angle, and as long as the angle is larger than the predetermined angle, resets the opposite direction of the previously decided scroll direction as a new scroll direction according to the movement of each input position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display control device that controls a moving direction of a display on a display unit via a pointing device such as a touch pad, and particularly to a display control device suitable for mounting on a portable communication terminal.
[0002]
[Prior art]
In general, a mobile phone is provided with a display unit such as a liquid crystal display capable of displaying contents of received mail, photographed pictures, games, and the like.
These mobile phones are provided with a pointing device such as a cross key, a jog dial, and a touch pad for scrolling display contents and moving a display position of a cursor or a pointer.
[0003]
FIG. 6A shows a specific example of an external view of a mobile phone in which a cross key is mounted as a pointer device. In FIG. 6A, 101 is an antenna, 601 is a call key for answering an incoming call, 602 is a power key for turning on / off the power, and 603 is a decision key for deciding input characters and the like. , 604 are cross keys used to move a cursor or scroll the display, 605 is a numeric keypad used to input telephone numbers and characters, and 106 is a display unit.
[0004]
As a prior art for controlling the moving direction of the display on the display unit via the pointing device, the direction of scrolling the display content depends on whether the locus drawn by the position coordinates input on the touch pad surface is clockwise or counterclockwise. Is disclosed in Patent Document 1.
Thus, even when the panel surface is small, the user can easily switch the scroll direction of the display content by switching the rotation direction on the panel surface.
[0005]
Also, a technology is disclosed in which the touchpad surface is partitioned into fixed areas, the position of each partition is defined by two-dimensional absolute coordinates, and the moving direction and speed of the pointer are specified based on the absolute coordinates of the input partition. It is disclosed in reference 2.
Thus, the user can easily move the pointer by designating a section on the touch pad surface.
[0006]
[Patent Document 1] JP-A-9-230993
[0007]
[Patent Document 2] JP-A-2001-282450
[0008]
[Problems to be solved by the invention]
However, when using the technology disclosed in Patent Document 1, the user must constantly be aware of the rotation direction of the input trajectory in order to scroll the display content in the intended direction. There is a problem that the rotation direction is wrong.
[0009]
In addition, when using the technology disclosed in Patent Document 2, the user needs to perform input operation while constantly checking the section to be input. Also, when mounting on a compact device such as a mobile phone, Is not practical because the area of each section is too small.
In view of the above problem, the present invention provides a display control device that can be mounted on a portable communication terminal that can easily control movement of display on a display unit in a small space regardless of an input position. With the goal.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is a display control device including a touch pad that receives an external input through contact with a pad surface, wherein the position control unit sequentially detects an input position on the pad surface, For each input position sequentially detected after the first input position is detected, a vector calculation means for calculating a vector having the input position as an end point and the input position detected immediately before as a start point; The vector V at _n And the vector V at the input position detected immediately before. ₁ Direction change determining means for determining whether an angle θ (0 ≦ θ ≦ 180 °) is larger than a predetermined angle α, and display contents of a display unit are determined in accordance with the movement of each of the input positions. Scrolling means for scrolling in the direction indicated by the arrow, and scroll control means for resetting a direction opposite to the immediately preceding scroll direction as a new scroll direction only when θ is larger than α.
[0011]
According to another aspect of the present invention, there is provided a portable communication terminal including a display control device including a touch pad that receives an external input through a pad surface, and a display unit, wherein the display control device is configured to control an input position on the pad surface. Position detecting means for sequentially detecting the input positions, and for each input position sequentially detected after the first input position is detected, calculating the direction of a vector starting from the input position as the end point and starting from the input position detected immediately before Vector calculation means to calculate the vector V at each of the input positions. _n And the vector V at the input position detected immediately before. ₁ The direction change determining means for determining whether or not the angle θ (0 ≦ θ ≦ 180 °) is larger than the predetermined angle α, and the display content of the display unit is determined according to the movement of each of the input positions. It is possible to have a scroll means for scrolling in the direction and a scroll control means for resetting a direction opposite to the immediately preceding scroll direction as a new scroll direction only when θ is larger than α.
[0012]
As a result, as long as the input position is moved on the touch pad surface in a predetermined range of movement direction, the display content of the display unit can be continuously scrolled in one direction, and the input position can be moved as needed. Since the scroll direction can be reversed by controlling the direction, the control of the moving direction of the display on the display unit can be easily performed in a small space regardless of the input position on the touch pad surface.
[0013]
For example, if the predetermined angle α is 90 °, the user continues scrolling in one direction on the touchpad surface without reversing the scroll direction at a rate greater than 50% of the possible angle range of the angle θ. By setting the predetermined angle α to be larger than 90 °, scrolling in one direction can be continued at a larger rate.
[0014]
Further, the present invention is a display control device that includes a touch pad that receives an external input through a contact on a pad surface, and displays a pointer on a display unit in accordance with the input. Detecting means for detecting, after the input position is first detected, for each sequentially detected input position, the input position as the end point, vector calculation means for calculating a vector starting from the first input position, the vector calculation means, Pointer movement control means for moving a pointer displayed on the display unit in accordance with a vector calculated for each input position each time the input position is sequentially detected.
[0015]
The present invention also relates to a display control device including a touchpad for receiving an external input via a pad surface, and displaying a pointer on a display unit in accordance with the input, wherein the detection control detects an external input position. Means, for each of the sequentially detected input positions after the input position is first detected, vector calculation means for calculating a vector having the input position as an end point and the first input position as a start point; And pointer movement control means for moving the pointer displayed on the display unit in accordance with the vector calculated for the input position each time is detected.
[0016]
This makes it possible to easily control the moving direction of the pointer on the display unit with a small space regardless of the input position.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
<Structure>
FIG. 6B shows a specific example of an external view of mobile phone 100 in which the display control device according to the present embodiment is mounted. In FIG. 6B, the same components as those of the mobile phone in FIG. 6A are denoted by the same reference numerals. In FIG. 6B, reference numeral 103 denotes a touch pad, and reference numeral 606 denotes a switching key for selectively instructing activation of a scroll control program and a pointer movement control program.
[0018]
FIG. 1 is a functional block diagram showing a functional configuration of the mobile phone 100. The mobile phone 100 includes an antenna 101, a wireless unit 102, a touch pad 103, a touch pad control unit 104, a control unit 105, a display unit 106, an input unit 107, a memory 108, a microphone 109, and a speaker 110. The display control device according to the present embodiment includes a touch pad 103, a touch pad control unit 104, and a control unit 105. The same components as those in FIG. 6B are denoted by the same reference numerals.
[0019]
The wireless unit 102 transmits and receives communication data for communication as communication radio waves, modulates communication data output from the control unit 105 into communication radio waves, transmits the communication data via the antenna 101, and The control unit 105 demodulates the received communication radio wave and outputs it to the control unit 105.
Here, "communication data" refers to control data used for communication control such as telephone numbers, voice data for telephone calls, electronic mail, character information, image data, incoming call signals, and the like.
[0020]
The touch pad 103 includes a capacitance sensor that detects a change in capacitance, and receives an input from a user through contact with a touch pad surface such as a fingertip or a pen for a touch pad. Is detected by a change in capacitance at the input position, and the input position is output to the touch pad control unit 104 as a position coordinate signal indicating position coordinates on the touch pad surface.
[0021]
The detection of the input position may be performed every time the input position is moved, or may be performed every fixed time.
Here, the touch pad 103 can be configured by, for example, providing matrix electrodes on the front and back surfaces of the electrostatic film, and applying a pulse from one end of the electrostatic film to form an electric field. As a result, when the fingertip or pen touches the electrostatic film through the pad surface, the capacitance of the contact part decreases, and this change in capacitance is converted into a change in the current value to detect the position of the contact part. can do.
[0022]
Touch pad control section 104 performs A / D conversion of the position coordinate signal input from touch pad 103 and outputs the result to control section 105 as position coordinate data.
The control unit 105 includes, for example, a microprocessor, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and executes a control program stored in the ROM to control the entire mobile phone 100. Do.
[0023]
In addition, the control unit 105 performs a scroll control process and a pointer movement control process by executing a scroll control program and a pointer movement control program stored in the ROM, respectively. Hereinafter, both processes will be described.
(1) Scroll control processing
The control unit 105 records the position coordinate data sequentially input from the touch pad control unit 104 in the memory 108, determines the initial input direction based on the position coordinate data, and displays the display unit according to the determined initial input direction. The scroll direction of the display of 106 is specified, and the display is scrolled in the specified scroll direction. If there is no reversal of the movement locus of the input position on the touchpad surface, the scroll direction specified according to the movement of the input position If the display is continued to be moved and the inversion is detected, the display is moved in the opposite scroll direction, and it is detected by the touch pad 103 that the touch on the touch pad surface has disappeared. When notified from the unit 104, it is determined that the input has been completed, and the processing is terminated.
[0024]
Here, the “initial input direction” refers to a vector having the initial input position on the touch pad surface of the touch pad 103 as a start point and the end point immediately after the input position as an end point in the orthogonal X-axis direction and Y-axis direction. This refers to the direction indicated by the Y component of the vector when it is decomposed into vectors.
FIG. 2B to FIG. 2E show examples of the movement locus of the input position input on the touch pad surface by the user. For example, in FIG. 2B, the initial input direction in the movement trajectory whose movement trajectory from the start point starts with a solid line is determined to be “downward”, and the initial input direction in the movement trajectory from the start point starts with a dotted line is: It is determined to be "upward".
[0025]
When the Y component vector is 0, the determination may be made “upward” or “downward”, and the determination may be made based on the position indicated by the start point position coordinates. It is good also as switching.
For example, the determination of the initial input direction when the Y component vector is 0 (hereinafter, referred to as “zero determination”) may be switched depending on whether or not the Y coordinate indicated by the position coordinate of the start point exceeds a predetermined value.
[0026]
Accordingly, when the starting point is at a position as shown in FIGS. 2B and 2C, the zero determination is determined to be “upward”, and as shown in FIGS. 2D and 2E. When it is at the position, the zero determination can be set to “downward”, and even when the start point is an area near the end on the touch pad surface, the scroll direction can be easily switched .
[0027]
"Detection of reversal of the input direction" refers to a vector in which, for each input position sequentially input after the input of the first input position, the input position is set as the end point and the immediately preceding input position is set as the start point (hereinafter, "input position"). Direction) is calculated as the slope of a straight line connecting the position coordinates of both input positions, and the input at each input position is determined based on whether the absolute value of the difference from the slope calculated immediately before is greater than 2. It is determined whether or not the angle θ (0 ° ≦ θ ≦ 180 °) formed by the position vector and the immediately preceding input position vector exceeds 90 °, and when it exceeds, it is detected as “reversal”.
[0028]
For example, in each of the movement trajectories of the input positions shown in FIGS. 2B to 2E, a portion of the movement trajectory connecting the input positions indicated by black circles is detected as “inversion”.
Here, FIG. 2A is a conceptual diagram showing a state in which the display on the display unit scrolls according to each movement locus of the input position shown in FIGS. 2B to 2E. When the moving locus is following the locus indicated by the solid line, the display in FIG. 2A is scrolled in the direction of the arrow indicated by the solid line, and when the locus is following the locus indicated by the dotted line, the display in FIG. The display of (A) scrolls in the direction of the dotted arrow.
[0029]
To be more specific, using the example of the movement trajectory in which the movement trajectory from the start point shown in FIG. 2B starts with a solid line portion, the control unit 105 sequentially inputs each position coordinate from the touch pad control unit 104. Each time, the position coordinates are recorded in the memory 108, and the display of the display unit 106 in FIG. 2A is indicated by a solid line in the arrow direction (downward) until the position coordinates of the input positions A, B, and C are input. When the position coordinates of A, B, and C are input, the inclinations of the straight lines AB and BC are calculated based on the recorded position coordinates of A, B, and C. Based on the absolute value of the difference, it is determined that the angle θ between the vector AB (input position vector at B) and the vector BC (input position vector at C) shown in FIG. Detects the reversal of the trajectory, Thereafter, as the input position on the touch pad surface moves along the movement locus indicated by the dotted line after the input position C in FIG. 2B, the display of the input position display unit 106 in FIG. Scroll in the arrow direction (upward) indicated by.
[0030]
(2) Pointer movement control processing
When the position coordinate data indicating the initial input position of the touch pad 103 on the touch pad surface (hereinafter, referred to as “initial position coordinate data”) is input from the touch pad control unit 104, the control unit 105 sets the initial position coordinates. The data is recorded in the memory 108, a pointer is displayed on the display unit 106 at a position corresponding to the initial position coordinates, and the input position of the input position is transmitted from the touch pad control unit 104 according to the movement of the input position on the touch pad surface. When the position coordinate data is sequentially input, the position coordinate data is recorded in the memory 108, and based on the position coordinate data and the initial position coordinate data, the position coordinate is set as the end point and the movement using the initial position coordinate as the start point is performed. Calculate the vector.
[0031]
Specifically, based on the two sets of position coordinate data (here, the position coordinates of the start point are (X1, Y1) and the position coordinates of the end point are (X2, Y2)), the direction of the movement vector ((X2- X1) / (Y2-Y1)), size ((X2-X1) ² + (Y2-Y1) ² ) ^1/2 Is calculated.
The control unit 105 moves the position of the pointer displayed on the display unit 106 in accordance with the calculated direction and magnitude of the movement vector, and notifies the touchpad 103 that the touch on the touchpad surface has disappeared. If detected and notified from the touch pad control unit 104, the input is determined to be completed, and the process is terminated.
[0032]
FIG. 3A is a diagram illustrating a state in which the direction and the magnitude of the movement vector change as the input position moves on the touch pad surface.
◎ indicates initial position coordinates, and as the input position moves on the touch pad surface, the movement vector starting from the initial position coordinates changes in the order of vector a, vector b, and vector c.
[0033]
FIG. 3B is a diagram illustrating a state in which the pointer moves on the display unit 106 according to a change in the direction and the size of the movement vector.
Here, directions and magnitudes corresponding to the directions and magnitudes of the movement vectors a, b, and c in FIG. 3A (represented as vectors a ′, b ′, and c ′ in FIG. 3B, respectively). .) Indicates that the pointer moves.
[0034]
The display unit 106 displays images and characters based on the communication data input from the control unit 105, and scrolls the display and moves the position of the displayed pointer under the control of the control unit 105. .
The input unit 107 receives an instruction to select a control program to be started from the user, and outputs the received instruction to the control unit 105.
[0035]
The control unit 105 also receives various inputs such as a character input and a telephone number input from the user and outputs the input to the control unit 105.
The memory 108 records position coordinate data and the like.
Microphone 109 A / D converts audio input from the user into audio data, and outputs the audio data to control unit 105.
The speaker 110 performs D / A conversion on the audio data output from the control unit 105 and outputs audio.
<Operation>
Next, the operation of the scroll control process performed by the control unit 105 will be described. FIG. 4 is a flowchart showing the above operation. Hereinafter, the above operation will be described with reference to FIG.
[0036]
When the control unit 105 receives a scroll control program start instruction from the user via the input unit 107, the control unit 105 reads out the scroll control program stored in the ROM, starts the scroll control process, and makes contact with the touch pad surface. Is determined by detecting the input of the position coordinate data from the touch pad control unit 104 (step S401), and when the input is started (step S401: Y). The initial input direction is detected (step S402), and it is determined whether the detected initial input direction is upward (step S403).
[0037]
In the case of the upward direction (step S403: Y), the display of the display unit 106 is scrolled upward (step S404), and thereafter, the direction of the input position vector at each input position sequentially input from the touch pad control unit 104 is immediately before It is determined whether or not the direction of the input position vector has been inverted (step S405).
When the display is reversed (step S405: Y), the display on the display unit 106 is scrolled in a direction opposite to the immediately preceding scroll direction (step S406), and the touch pad control unit 104 stops touching the touch pad surface. It is determined whether or not the input from the touch pad surface has been completed based on whether or not the notification has been made (step S407).
[0038]
When the input is completed (Step S407: Y), the process returns to Step S401, and when the input is not completed (Step S407: N), the process returns to Step S405.
If it is not upward in step S403 (step S403: N), the display of the display unit 106 is scrolled downward (step S408), and the process of step S405 is performed.
[0039]
In step S405, if it is not inverted (step S405: N), scrolling in the scroll direction in which scrolling is currently performed is continued (step S409), and the process of step S407 is performed.
Next, the operation of the pointer movement control process performed by the control unit 105 will be described. FIG. 5 is a flowchart showing the above operation. Hereinafter, description will be made with reference to FIG.
[0040]
When the control unit 105 receives an instruction to start the pointer movement control program from the user via the input unit 107, the control unit 105 reads the pointer movement control program stored in the ROM, starts the pointer movement control process, and It is determined whether or not the input from the user has been started through the contact with the user by detecting the input of the position coordinate data from the touch pad control unit 104 (step S501), and when the input has been started (step S501). : Y), the initial input position is detected (step S502), the initial position coordinate data of the initial input position is recorded in the memory 108, and the display unit 106 displays a pointer at a position corresponding to the initial position coordinate ( Step S503), according to the movement of the input position on the touchpad surface, the touchpad control unit 1 When the position coordinate data of the input position is input from Step 4, it is detected that the input position has moved (Step S 504: Y), the position coordinate data is recorded in the memory 108, and the position coordinate data and the initial Based on the position coordinate data, a movement vector having the position coordinates as the end point and the initial position coordinates as the start point is calculated (step S505), and displayed on the display unit 106 according to the calculated direction and size of the movement vector. The position of the pointer is moved (step S506), and whether or not the input from the touchpad surface is completed is determined by whether or not the touchpad control unit 104 notifies that the touch on the touchpad surface has disappeared. It is determined whether or not it is (step S507).
[0041]
If the input has been completed (Step S507: Y), the process returns to Step S501, and if the input has not been completed (Step S507: N), the process returns to Step S504.
The embodiments of the present invention have been described above, but it goes without saying that the present invention is not limited to these embodiments.
[0042]
(1) In the present embodiment, the display control device is mounted on the mobile phone 100. However, the display control device may be mounted on a device having another display unit, for example, a PDA (Personal Digital Assistance), a personal computer, or a digital camera. Good.
(2) In the present embodiment, in the scroll control process, the scroll direction of the display of the display unit 106 is switched up and down in response to the inversion. A direction switching key may be provided to select a direction (up / down direction or left / right direction) for switching the scroll direction.
[0043]
(3) In the present embodiment, in the scroll control process, the control unit 105 records the position coordinate data sequentially input from the touch pad control unit 104 in the memory 108, but the position coordinate data is input. In step S405 in FIG. 4, the direction of the input position vector at each input position sequentially input from the touch pad control unit 104 is set to the direction of the immediately preceding input position vector. If it is determined that the input position vector has been inverted (step S405: Y), the position coordinates further move from the start point to the end point based on the respective position coordinate data and the input times of the start point and end point of the input position vector determined to be inverted. The calculated moving speed is determined, and it is determined whether the calculated moving speed is higher than a predetermined threshold. As shown in the flowchart, the display on the display unit 106 is scrolled in a direction opposite to the immediately preceding scroll direction (step S406), and whether or not the touch pad control unit 104 has notified that the touch on the touch pad surface has disappeared is determined. Thus, it may be determined whether or not the input from the touch pad surface has been completed (step S407).
[0044]
Accordingly, when the input position is slowly moved on the touch pad surface, the scroll direction is not reversed regardless of the direction in which the input position is moved. The display on the display unit can be easily scrolled in one direction without worrying about the moving direction.
(4) In the present embodiment, in the scroll control processing, whether the angle θ (0 ° ≦ θ ≦ 180 °) formed by the input position vector at each input position and the immediately preceding input position vector exceeds 90 °. Is determined, and when it exceeds, it is determined to be detected as “reversal”. However, the angle is not limited to 90 ° but may be any angle from 0 ° to 180 °. Any angle of 180 ° or less is desirable.
[0045]
In order for the user to be able to easily and intuitively recognize the reversal direction during the input operation on the touch pad surface, the range of the angle is set to a narrower range (for example, 135 ° to 180 °). It is effective to do. This allows the user to set the angle range for keeping the scroll in one direction at a sufficiently large ratio (the former angle range / the latter angle range> 3) with respect to the angle range for inversion. In addition, it is possible to reduce a problem that the input operation is performed in the inversion direction unconsciously.
[0046]
Further, the angle used for determining the reversal may be set by a user input.
[0047]
【The invention's effect】
(1) The present invention is a display control device including a touchpad that receives an external input through contact with a pad surface, and a position detection unit that sequentially detects an input position on the pad surface, and an initial input. For each input position sequentially detected after the position has been detected, vector calculation means for calculating a vector starting from the input position as an end point and starting from the input position detected immediately before, and the vector V at each of the input positions. _n And the vector V at the input position detected immediately before. ₁ Direction change determining means for determining whether an angle θ (0 ≦ θ ≦ 180 °) is larger than a predetermined angle α, and display contents of a display unit are determined in accordance with the movement of each of the input positions. Scrolling means for scrolling in the scrolled direction, and scroll control means for redefining a direction opposite to the previously determined scrolling direction as a new scrolling direction only when θ is larger than α.
[0048]
(2) Further, the present invention is a portable communication terminal including a display control device including a touchpad for receiving an external input through a pad surface, and a display unit, wherein the display control device is configured to be connected to a pad surface. Position detecting means for sequentially detecting the input position of each of the input positions, and for each of the input positions sequentially detected after the first input position is detected, a vector having the input position as an end point and the input position detected immediately before as a start point. Vector calculation means for calculating a direction, and the vector V at each of the input positions _n And the vector V at the input position detected immediately before. ₁ The direction change determining means for determining whether or not the angle θ (0 ≦ θ ≦ 180 °) is larger than the predetermined angle α, and the display content of the display unit is determined according to the movement of each of the input positions. Scroll means for scrolling in the direction;
Only when θ is larger than α, a scroll control unit that redefines a direction opposite to the previously determined scroll direction as a new scroll direction may be provided.
[0049]
According to the configuration of (1) or (2), as long as the input position is moved on the touchpad surface in the moving direction within the predetermined range, the display content of the display unit can be continuously scrolled in one direction. The scroll direction can be reversed by controlling the movement direction of the input position as needed, so that the display movement direction on the display unit can be easily controlled in a small space regardless of the input position on the touchpad surface. Can be done.
[0050]
For example, if the predetermined angle α is 90 °, the user continues scrolling in one direction on the touchpad surface without reversing the scroll direction at a rate greater than 50% of the possible angle range of the angle θ. By setting the predetermined angle α to be larger than 90 °, scrolling in one direction can be continued at a larger rate.
[0051]
(3) In the configuration of (1) or (2), the position detecting means further detects a moving direction of the input position from the first input position, and the scroll control means detects the moving direction based on the detected moving direction. A direction in which the display content of the display unit is scrolled may be determined, and the display content of the display unit may be scrolled in the determined direction.
Thus, the scroll direction of the display content on the display unit is specified based on the moving direction of the input position at the time of starting the input, and thus the user can specify the intended scroll direction in the initial input operation.
[0052]
(4) In the configuration according to any one of (1) to (3), the display control device may further include, for each of the input positions, a moving speed calculating unit that calculates a moving speed from the input position detected immediately before. Moving speed determining means for determining whether the calculated moving speed is greater than a threshold value, wherein the scroll control means changes the scroll direction only when θ is greater than α and the moving speed is greater than the threshold value. It may be reversed.
[0053]
Accordingly, when the input position is slowly moved on the touch pad surface, the scroll direction is not reversed regardless of the direction in which the input position is moved. The display on the display unit can be easily scrolled in one direction without worrying about the moving direction, and the scroll direction can be reversed by quickly changing the moving direction when necessary.
[0054]
(5) In any one of the constitutions (1) to (4), α may be 90 °.
This allows the user to control the moving direction of the input position on the touchpad surface within ± 90 ° of the vector direction at the immediately preceding input position, within a perceptually easy-to-understand and wide moving direction allowable range. , The display content on the display unit can be continuously scrolled in one direction, and the direction of scrolling is reversed by making the moving direction of the input position larger than ± 90 ° with respect to the vector direction at the immediately preceding input position. Therefore, the control of the moving direction of the display on the display unit can be easily performed regardless of the input position.
[0055]
(6) The present invention is also a display control device that includes a touch pad that receives an external input through a contact on a pad surface, and displays a pointer on a display unit in response to the input. Detecting means for detecting an input position, and vector calculating means for calculating a vector starting from the first input position and ending at the input position for each input position sequentially detected after the input position is first detected. And pointer movement control means for moving a pointer displayed on the display unit in accordance with a vector calculated for the input position each time the input position is sequentially detected.
[0056]
The present invention also relates to a display control device including a touchpad for receiving an external input via a pad surface, and displaying a pointer on a display unit in accordance with the input, wherein the detection control detects an external input position. Means, for each of the sequentially detected input positions after the input position is first detected, vector calculation means for calculating a vector having the input position as an end point and the first input position as a start point; And pointer movement control means for moving the pointer displayed on the display unit in accordance with the vector calculated for the input position each time is detected.
[0057]
This makes it possible to easily control the moving direction of the pointer on the display unit with a small space regardless of the input position.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a functional configuration of a mobile phone 100 equipped with a display control device according to the present embodiment.
FIG. 2A is a conceptual diagram showing a state in which the display of a display unit scrolls according to each movement locus of an input position shown in FIGS. 2B to 2E.
FIG. 2B to FIG. 2E show the movement trajectories of the input position on the touchpad surface.
FIG. 2F shows an angle θ between the vector AB (the input position vector in B) and the vector BC (the input position vector in C).
FIG. 3A is a diagram illustrating a state where a direction and a magnitude of a movement vector change as an input position moves on a touch pad surface.
FIG. 3B is a diagram illustrating a state in which the pointer moves on the display unit 106 according to a change in the direction and the size of the movement vector.
FIG. 4 is a flowchart illustrating an operation of a scroll control process performed by a control unit 105;
FIG. 5 is a flowchart illustrating an operation of a pointer movement control process performed by a control unit 105;
FIG. 6A shows a specific example of an external view of a mobile phone in which a cross key is mounted as a pointer device.
FIG. 6B shows a specific example of an external view of mobile phone 100 in which the display control device according to the present embodiment is mounted.
[Explanation of symbols]
100 mobile phone
101 antenna
102 Radio section
103 Touchpad
104 Touchpad control unit
105 control unit
106 Display
107 Input unit
108 memory
109 speaker
110 microphone
601 call key
602 power key
603 Confirm key
604 Cross key
605 Numeric keypad

Claims (10)

A display control device including a touchpad that receives an external input through contact with a pad surface,
Position detecting means for sequentially detecting an input position on the pad surface;
For each input position sequentially detected after the first input position is detected, the input position is set as the end point, and a vector calculation unit that calculates a vector starting from the input position detected immediately before,
It is determined whether an angle θ (0 ≦ θ ≦ 180 °) between the vector V _{n at} each input position and the vector V _n−1 at the input position detected immediately before is greater than a predetermined angle α. Direction change determining means,
Scroll means for scrolling the display content of the display unit in a predetermined direction in accordance with the movement of each of the input positions;
a display control device comprising: a scroll control unit that redefines a direction opposite to the immediately preceding scroll direction as a new scroll direction only when θ is larger than α. The position detecting means further detects a moving direction of the input position from the first input position,
The display according to claim 1, wherein the scroll control means determines a direction in which the display content of the display unit is scrolled based on the detected moving direction, and scrolls the display content of the display unit in the determined direction. Control device. The display control device further includes:
For each of the input positions, a moving speed calculating unit that calculates a moving speed from the input position detected immediately before,
Moving speed determining means for determining whether the calculated moving speed is greater than a threshold,
3. The display control device according to claim 1, wherein the scroll control unit reverses the scroll direction only when θ is larger than α and the moving speed is larger than a threshold value. The display control device according to any one of claims 1 to 3, wherein α is 90 °. A display control device that includes a touch pad that receives an external input through contact on a pad surface, and displays a pointer on a display unit according to the input,
Detecting means for detecting an external input position;
After the input position is first detected, for each successively detected input position, the input position is set as the end point, and a vector calculation means for calculating a vector starting with the first input position,
A display control device, comprising: a pointer movement control unit that moves a pointer displayed on the display unit in accordance with a vector calculated for each of the input positions, each time the input position is sequentially detected. A mobile communication terminal including a display control device including a touchpad that receives an external input through a pad surface, and a display unit,
The display control device,
Position detecting means for sequentially detecting an input position on the pad surface;
For each input position sequentially detected after the first input position is detected, the input position is set as the end point, and vector calculation means for calculating the direction of a vector starting from the input position detected immediately before,
It is determined whether an angle θ (0 ≦ θ ≦ 180 °) between the vector V _{n at} each input position and the vector V _n−1 at the input position detected immediately before is greater than a predetermined angle α. Scrolling means for scrolling the display content of the display unit in a predetermined direction in accordance with the direction change determining means and the movement of each of the input positions;
a portable communication terminal comprising: a scroll control unit that redefines a direction opposite to the immediately preceding scroll direction as a new scroll direction only when θ is larger than α. The position detecting means further detects a moving direction of the input position from the first input position,
The scroll control unit specifies a direction in which the display content of the display unit is scrolled based on the detected moving direction, and scrolls the display content of the display unit in one specified direction according to the movement of the input position. The mobile communication terminal according to claim 6, wherein: The display control device further includes:
For each of the input positions, a moving speed calculating unit that calculates a moving speed from the input position detected immediately before,
Moving speed determining means for determining whether the calculated moving speed is greater than a threshold,
8. The mobile communication terminal according to claim 6, wherein the scroll control unit reverses the scroll direction when θ is larger than α and the moving speed is larger than a threshold. 9. The portable communication terminal according to claim 6, wherein α is 90 °. A display control device that includes a touch pad that receives an external input via a pad surface, and displays a pointer on a display unit according to the input,
Detecting means for detecting an external input position;
After the input position is first detected, for each successively detected input position, the input position is set as the end point, and a vector calculation means for calculating a vector starting with the first input position,
A portable communication terminal, comprising: pointer movement control means for moving a pointer displayed on the display unit in accordance with a vector calculated for each of the input positions, each time the input position is sequentially detected.

Images