• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: An apparatus and a method for magnifying and reducing a picture in a PDA(Personal Digital Assistant) are provided to magnify or reduce the picture according as a user moves a stylus pen up or down. CONSTITUTION: A motion sensing unit(2) informs a position value of a stylus pen on a touch panel(1). A magnification factor control unit(3) decides a magnifying and reducing factor of a picture by the position value obtained in the motion sensing unit(2). A picture buffer unit(4) recomposes a picture to be outputted on an LCD panel(5), according to the magnifying and reducing factor obtained through the magnification factor control unit(3).
    公开号:KR20030071080A
    申请号:KR1020020010610
    申请日:2002-02-27
    公开日:2003-09-03
    发明作者:박지혜
    申请人:주식회사 엘지이아이；
    IPC主号:
    专利说明:

    Screen zoom device and method of personal information terminal {DISPLAY ZOOM APPARATUS AND METHOD FOR PERSONAL DIGITAL ASSISTANT}
    [9] The present invention relates to a device and a method for expanding / reducing a screen of a personal information terminal, and more particularly, to a screen enlargement / reduction device for a personal information terminal that enables a user to enlarge or reduce the screen accordingly when the user moves the stylus pen up or down. It is about a method.
    [10] The personal information terminal has a low resolution, so the size of the viewable screen is small. Letters and pictures are also small in size to fit the screen size.
    [11] In personal information terminals, some document applications use a method of increasing the font size by setting the font option of the menu bar to a desired font size in order to enlarge the screen.
    [12] The above method is available only in the document viewing program and has a limitation applied only in the corresponding application program. In addition, since the font size can be adjusted by clicking the menu several times, there is a problem that the user is troubled.
    [13] In the personal information terminal, not all programs support the enlargement and reduction functions of the screen, and some of the supporting programs implement different operation methods.
    [14] For this reason, there is a need for a personal information terminal to enlarge and reduce the screen freely at any time and at any time.
    [15] Therefore, the present invention was devised in view of the necessity as described above, and the user can use the personal information terminal by enlarging or reducing the screen with a simple operation of the stylus pen at any time anywhere on the screen of the personal information terminal regardless of the program displayed on the screen. An object of the present invention is to provide a device and a method for enlarging / reducing a screen of a personal information terminal.
    [1] 1 is a block diagram showing a configuration of a screen zooming / reducing device of a personal information terminal.
    [2] 2 is an operation flowchart of a screen enlargement / reduction method of a personal information terminal.
    [3] 3 is an explanatory diagram showing a process of reducing a screen with a stylus pen;
    [4] 4 is an explanatory diagram showing a process of enlarging a screen with a stylus pen;
    [5] ** Explanation of symbols for main parts of drawings **
    [6] 1: touch panel 2: motion detection unit
    [7] 3: magnification control part 4: screen buffer part
    [8] 5: LCD panel
    [16] The present invention for achieving the above object, the motion detection unit for indicating the position value of how much the stylus pen on the touch panel; A magnification control unit for determining an enlargement and reduction ratio of the screen corresponding to the position value obtained by the motion detection unit; And a screen buffer unit configured to reconstruct a screen to be output on the LCD panel screen according to the magnification obtained through the magnification control unit.
    [17] In addition, when the user moves in contact with the touch screen using the stylus pen, the motion detection unit calculates and outputs the later Y coordinate and the first Y coordinate of the stylus pen; The magnification control unit subtracting the first Y coordinate from the later Y coordinate to determine whether the value is greater than 0, finding a corresponding magnification in the enlargement table if large, and finding a corresponding magnification in the reduction table if small; The screen buffer unit is characterized in that it operates in the step of re-adjusting the screen by the magnification obtained by the magnification control unit.
    [18] Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.
    [19] 1 is a block diagram showing a configuration of a screen enlargement / reduction device of a personal information terminal according to the present invention. As shown in FIG. 1, a motion indicating a position value of how much a stylus pen is drawn on the touch panel 1 is shown. A sensing unit 2; A magnification control unit (3) for determining magnification of the screen corresponding to the position value obtained by the motion detection unit (2); It is composed of a screen buffer unit 4 for reconfiguring the screen to be output to the LCD panel 5 screen by the magnification obtained through the magnification control unit 3, which will be described below.
    [20] When the user draws the stylus pen up or down on the touch panel 1, the motion detector 2 detects this motion.
    [21] The motion detection unit 2 is the touch panel 1 on the LCD of the personal information terminal when the (x, y) coordinates and the stylus pen are removed from the LCD screen. x ', y') Remember the coordinates.
    [22] For the sake of simplicity we will use only the change in the y coordinate to determine whether the stylus pen is drawn up or down.
    [23] When the user draws the stylus down, the y'-y value is positive, and when it is drawn up, the y'-y value is negative.
    [24] The magnification control part 3 has the table matched with 1 to N magnification according to the coordinate value difference. From this table, magnification values corresponding to the y coordinate value difference calculated by the motion detector 2 are obtained.
    [25] The screen buffer unit 4 reconstructs the screen by enlarging or reducing the screen of the corresponding part to be enlarged by the magnification obtained by the magnification control unit 3.
    [26] The screen reconstructed by the screen buffer unit 4 is scattered on the LCD panel 5.
    [27] 2 is a flowchart illustrating a method of enlarging / reducing a screen of a personal information device according to the present invention. As shown in FIG. 2, when a user moves in contact with a touch screen using a stylus pen, the motion detection unit may have a later Y coordinate and a first Y coordinate of the stylus pen. Calculating and outputting the Y coordinate (S1, S2); The magnification control unit subtracts the first Y coordinate from the later Y coordinate to determine whether the value is greater than 0, and if it is large, finds the corresponding magnification in the enlargement table, and if it is small, finds the corresponding magnification in the reduction table (S3 to S5) and ; An embodiment of the present invention will be described in that the screen buffer unit includes a step S6 of re-adjusting and redisplaying the screen at the magnification obtained by the magnification control unit.
    [28] 3 is an explanatory diagram showing a process of reducing a screen with a stylus pen. As shown in FIG. 3, when the user moves the stylus pen from the bottom to the upper side of the touch panel, the motion detector obtains a later y coordinate and an initial y coordinate. To the magnification control unit.
    [29] The magnification control unit obtains a negative value by subtracting the first y coordinate from the later y coordinate and obtains a reduction magnification value corresponding to the y coordinate value difference obtained from the table.
    [30] The screen buffer unit reduces the screen of the corresponding portion to be reduced by the reduction factor to reconstruct the screen and sprays the reconstructed screen on the LCD panel.
    [31] Thus, a reduced screen appears on the LCD panel.
    [32] 4 is an explanatory diagram illustrating a process of enlarging a screen with a stylus pen. As shown in FIG. 4, when the user moves the stylus pen from top to bottom on the touch panel, the motion detector obtains a later y coordinate and an initial y coordinate. To the magnification control unit.
    [33] The magnification control unit obtains a positive value by subtracting the first y coordinate from the later y coordinate and obtains an enlargement magnification value corresponding to the y coordinate value difference obtained from the table.
    [34] The screen buffer unit enlarges the screen of the corresponding portion to be enlarged by the enlargement magnification, reconstructs the screen, and spreads the reconstructed screen on the LCD panel.
    [35] Accordingly, an enlarged screen appears on the LCD panel.
    [36] As described in detail above, the present invention has the effect of providing a more convenient user interface by zooming in and out the screen by simply operating the stylus at any time anywhere on the personal information terminal screen regardless of the program displayed on the screen. have.
    权利要求:
    Claims (3)
    [1" claim-type="Currently amended] A motion detector for indicating a position value of how much the stylus pen is drawn on the touch panel; A magnification control unit for determining an enlargement and reduction ratio of the screen corresponding to the position value obtained by the motion detection unit; And a screen buffer unit configured to reconstruct a screen to be output on an LCD panel screen according to the magnification obtained through the magnification control unit.
    [2" claim-type="Currently amended] The magnification control unit of claim 1, wherein the magnification control unit is configured to obtain a magnification and reduction magnification of the screen corresponding to the position using the difference of the position values obtained from the motion detection unit. Shrinking device.
    [3" claim-type="Currently amended] When the user touches and moves the touch screen using the stylus pen, the motion detection unit calculates and outputs the later Y coordinate and the first Y coordinate of the stylus pen; The magnification control unit subtracting the first Y coordinate from the later Y coordinate to determine whether the value is greater than 0, finding a corresponding magnification in the enlargement table if large, and finding a corresponding magnification in the reduction table if small; And a screen buffer unit to readjust and re-display the screen according to the magnification obtained by the magnification control unit.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-02-27|Application filed by 주식회사 엘지이아이
    2002-02-27|Priority to KR1020020010610A
    2003-09-03|Publication of KR20030071080A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020020010610A|KR20030071080A|2002-02-27|2002-02-27|Display zoom apparatus and method for personal digital assistant|
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