KR20080072971A - Portable digital device having touchpad with two pointing modes of displacement control and coordinate control - Google Patents

Abstract

A portable digital apparatus with a touch pad pointing device using a pointer control mode using displacement of fingers and a pointer control mode according to finger coordinates is provided to achieve a pointing function easily and input characters easily by using a touch pad. A portable digital apparatus includes an input device which allows all of inputs to be made through a touch pad. A keyboard and a mouse are integrated into a touch pad. The touch pad has a button function. Characters are inputted by using two touch pads. One point on a touch pad corresponds to one point on an image displayed on a screen.

Description

Portable digital device having touchpad with two pointing modes of displacement control and coordinate control} using a pointer control method using finger displacement and a pointer control method using finger coordinates

1 is an example of a mobile phone (FIG. 1B) equipped with a touch pad 104 that replaces a conventional mobile phone (FIG. 1A) and a keypad, 101 is a power switch, 102 (GUI / Phone mode conversion button), and 103 (right of a mouse) Buttons), 105 (character input mode switch button) and 106 (mouse left button) indicate function buttons.The buttons used to execute the two-button mouse and menu expansion buttons and other mobile phones are commonly used for computers. The number of buttons need not be limited to four as shown in FIG. 1B.

FIG. 2 illustrates a case in which the mobile phone having the pointing device of FIG. 1B is gripped and operated with one hand (FIG. 2A) and with two hands (FIG. 2B). The number is entered by placing the pointer on the number 4 of the virtual keypad 201 on the screen and pressing the play button 203.

FIG. 3 illustrates a process for inputting '47' when the mobile phone having the pointing device as the input device of FIG. 1 (b) is operated with one hand. 3A illustrates a state where a pointer is positioned at the number '4' of the virtual keypad 301 on the screen, and FIG. 3B illustrates a situation in which 4 is input on the screen by pressing the execution button 303. FIG. 3C shows the process of moving the thumb down on the touchpad 302 to move the pointer over the number '7' on the screen to enter an additional '7' while already entering '4'. FIG. 3D Shows that the thumb moves from the touchpad to the play button and presses to execute a command to enter a '7'.

4 is a mobile phone having a keypad during operation of the mobile phone when the touch pad shown in FIG. 1B has a function of a function button (execution button) and operates according to the same operation principle as the mobile phone of the existing button arrangement. , 4d) and finger movements are the same. That is, when the pointing device is pressed, it has a function of an execution button. The process of inputting 47 is no longer necessary to press the function button made in FIGS. 3B and 3D as shown in FIG. Likewise, the user moves the finger on the touch pad to select '4' on the screen, followed by a pressing operation at the same position, thereby inputting '4', which has the same process as the input of the existing mobile phone shown in FIG. 4C. Similarly, in the case of inputting '7', the movement of the finger and the pressing operation for selecting '7' (FIG. 4B) are the same as those of the conventional mobile phone (FIG. 4D).

Figure 5 shows an example of a touch pad in charge of the function of the function button as a schematic structure. 501 is a touch pad main body, 502 shows a button switch, and FIG. 5A shows a state before the touch pad main body is pressed, and FIG. 5B shows a state when the touch pad main body is pressed. 5C and 5D show a button switch located next to the touch pad main body so that the switch is operated in a lateral direction when the pointing device is pressed.

FIG. 6 shows a touch pad bundle having a function of a function button and a shape when the touch pad bundle is pressed to operate a button function (FIG. 6B). In the case of the general touch pad, the touch pad is operated by tapping the touch pad once with the finger. In this case, when the finger is released from the touch pad, the pointer moves and the command to be executed cannot be fulfilled. Errors may occur and furthermore, these additional finger movements will require more energy and time than conventional keypad-type cell phones, reducing the efficiency of number entry.

7 is a membrane switch applied to the bottom surface of the touch pad 701. The upper conductor 703 and the lower conductor 704 are separated as elastic spacers 702, and the touch pad is pressed when the finger is pressed. When the pressure is removed, it is restored to its original state and serves as a switch function. In this case, the operation for operating the button switch of FIG. 5 can be reduced to one tenth of a millimeter. However, in order to isolate the electrodes of the conventional resonator type touch pad and the conductors 703 and 704 of the membrane switch, an elastic support that acts like a spacer on a portion where the insulating support 705 and the touch pad are in contact with each other ( 706) is arranged to be in charge of the push switch function.

FIG. 8 shows two types of Querty Phones. FIG. 8a shows a model LG9200 Qwerty Phone produced and sold by LG. The keyboard is provided in a slide form, and FIG. 8b is a Blackberry 8700 model.

9 illustrates a mobile phone using two touch pads 906L and 906R provided by the present invention. The two touch pads operate in conjunction with two cursors in the character input method, and each cursor is divided into half of the virtual keyboard to cover left and right areas. In addition, there are four function buttons 902 to 905, which perform different functions when the mobile phone is used, and the arrangement of these function buttons allows the user to fully perform the functions of the pointing device with both hands or with one hand. In addition, a keyboard 9a of a general keyboard may be used as it is or a shortcut keyboard 9b having three keyboard rows may be used for convenience of character input.

Figure 10 shows an example that can be applied to the actual mobile phone, Figure 10c is a current model of the SPH-B3100 of Samsung Electronics using a double hinge to enable the horizontal and vertical view of the screen. Similarly, the arrangement of the pointing device of the present invention can be applied to both the case where the landscape view is advantageous, such as the e-mail or the multimedia player function, and the case of the portrait view for the phone function only, and the QWERTY phone having the function of the keyboard input device as shown in FIG. 9. In view of the structure of the conventional QWERTY phone shown in Figure 8 as well as the built-in keyboard in a small space can be seen the advantages in that it can provide a graphical user interface (GUI).

11 is a view of using the mobile phone provided in the vertical view of the present invention can be used with one hand to enable a simple dialing by phone function and further provides a bar-type structure that enables the handset function.

12 is a view of the mobile phone provided by the present invention when using a landscape view, in which case both hands can be used to enable smooth operation of the character input and GUI system.

FIG. 13 shows that a telephone call can be made identical to a conventional mobile phone by using a GUI system in a portrait view mode. FIG. 13A is an initial screen displayed when the mobile phone is turned on, and the pointer (cursor) is positioned on the telephone call program icon, and then double-clicked (double-tap of the touch pad) to open the virtual keypad shown in FIG. 13B, and then 011-813- To dial 9715, move the cursor to the number you want from '0' to '5' (Fig. 13c) and press it in turn (press the touch pad) to enter the number on the screen. Likewise, move the cursor to the 'call' button on the virtual keypad (press the touch pad) to make a call, and press the 'end' button to end the phone call. Unlike the existing mobile phone, you do not need to delete the wrong number even if you enter the wrong number, just select the wrong number and press the 'Cancel' button to delete and then enter a new number. This input method is the same as the method of modifying a character using a mouse in a computer. It is an advantage of the mobile phone provided by the present invention that the implementation of a function of the existing mobile phone is also possible through a program. Therefore, even if you are familiar with the call method using the keypad of the existing mobile phone provides an interface that can be used as it is. For example, even if only the last number 9715 is entered, the corresponding telephone number (011-813-9715) appears on the screen and the call button is pressed. In addition, if you press and hold '1' for a long time like the shortcut function of the existing mobile phone (if you press and hold the touch pad for a long time), you can connect to the phone number already entered. To return to the initial screen GUI system, call the hidden menu, move the cursor to the 'main screen' menu, and press the button (touch pad) (Fig. 13e).

Fig. 14 shows that an e-mail program is used as in the GUI system of an existing computer in a landscape view mode in a mobile phone having a pointing device provided by the present invention. Fig. 14a shows the main screen when the mobile phone is turned on. When the pointer (cursor) is placed on the e-mail program icon and double-clicked (the touch pad is pressed twice quickly), the e-mail program as shown in Fig. 14b opens and the pointer is again displayed. When placed in the transmission letter box and double-clicking the selection function button 904L, the transmission letter list as shown in Fig. 14C appears. In the same way, if one of the e-mail lists is selected and double-clicked, the e-mail contents are opened and a new entry or modification can be made as shown in FIG. 14D. At this time, in order to operate the character input mode, the pointer is positioned at the position where the character is to be input, and then the selection function button 904L is pressed to display the character input position cursor. In this case, when the text / GUI mode switching button 901L is pressed, a virtual keyboard appears at the bottom of the screen, and a portion to input a character is positioned directly above the virtual keyboard (Fig. 14e). After the character input is completed, as shown in FIG. 14F, when the title is input and the Text / GUI mode switch button (901L) is pressed, the position to be input can be selected again. Double click to display the input position cursor on the screen. 14H, the text / GUI mode switch button 901L is pressed to switch to the UI mode, and the process proceeds to the next step. For example, you can move the pointer to a file on the menu and press the Select button to expand the down menu and execute 'Save', 'Send' or 'Exit'. If you execute 'Exit', you will be returned to the main screen (Figure 14a).

FIG. 15 shows the virtual keyboard. FIG. 15A shows the virtual keyboard displayed on the screen when the text input mode is started. The left and right pointers are located at 'f' and 'j'. At this time, two pointers (cursors) appear on the left and right sides of the virtual keyboard, and each pointer does not cross over the center line of the keyboard and operates only in the left region 1501 and the right region 1502 of the keyboard. It is designed to double the efficiency of text input by the left thumb and the right thumb in the same way as the keyboard. In other words, the two pointers do not intersect with each other, and no matter how the touchpad is operated, the pointers are fixed to the left and right sides so that the movement of two fingers (thumbs) is more free and the character input is the same as that of the QWERTY keyboard. It brings efficiency. And the function of the 'Enter', 'Korean / English conversion' and 'Cap (capital conversion of English)' frequently used in the character input mode as shown in Figure 14g, the function buttons around the touch pad is in a fixed position Easily manipulated to increase the efficiency of text input. In fact, if you press the 'Cap' function button, the key of the virtual keyboard is changed to the uppercase mode (Fig. 15b).

16 is a process of inputting from "... I am fine." To "... I am" in the character input process, followed by a space, and then entering 'fine'. Figure 16a is input until '... am' and Figure 16b is to enter the space by pressing the right thumb to move the lower right corner of the touch pad to enter the space to enter the space function. To do this, place the cursor on the 'f' and 'i' and press the left and right touch pads in turn. (Fig. 16c) However, it is easier to enter the text because it is used more than anything in the text input mode. The present method can be used in the bottom right corner of the virtual keyboard and the method of inputting by simply moving the finger left and right without pressing the touch pad, which is described in FIG. 36.

FIG. 17 shows that a mobile phone having two touch pads and a plurality of function buttons provided by the present invention can be easily operated on a GUI system such as a mouse. FIG. 17A illustrates a method of selecting a document using a right touch pad and a left command execution button (a function button located below the left touch pad) during the process of deleting a document in the trash. FIG. 17B shows a right touch while pressing a command execution button. The process of moving a document to the trash using the pad. In the case of one pointer and two pointing devices, since the pointing devices operate independently, there is an advantage that the left and right handed users can use the hand as easily as possible, thereby ensuring the convenience of operation such as a mouse. As shown in FIG. 17, the right touch pad may be used for the right handed and the left touch pad may be used for the left handed. The left and right function buttons 904L and 904R can be used interchangeably as in the mouse, and the operation of FIG. 17B showing the right handed operation is also applied to the left handed.

FIG. 18 illustrates a mobile phone having a double sliding structure in which two touch pads are both capable of a landscape view 18c and a portrait view 18b. Comparing the mobile phone of this structure with the mobile phone shown in FIG. 8A, the mobile phone provided in the present invention provides a space that can expand the screen as much as the keypad length of the body of the mobile phone of FIG. 8A so that the screen can be used more widely. If the size of the screen is the same, the size of the mobile phone can be as small as the keypad length of the body of the mobile phone of Figure 8a. Therefore, it is much more efficient in space than a QWERTY phone using a conventional keypad and more various functions are possible in terms of GUI implementation.

FIG. 19 lists electronic dictionaries having two touch pads (FIGS. 19B and 19C) and electronic dictionaries having conventional keypad input devices (FIG. 19A). In the case of an electronic dictionary having a touch pad provided by the present invention, a GUI system is provided. Because it operates on a basic basis, each built-in dictionary can be used in the same way as an application on a computer. When holding and using an electronic dictionary with both hands, use it as shown in FIG. 12A. 2B, the touch pad may be used with only one hand. The electronic dictionary provided by the present invention allows the use of multiple dictionaries at the same time, as shown in FIG. 19C, whereas the conventional electronic dictionary shows a single window by stepping down the menu. In other words, if you click the radio button at the bottom of the screen that says "Work ...", you will be able to use the Japan-Korean dictionary in the same way as the English-Korean dictionary shown on the screen.

20A illustrates a structure for making text input using a virtual keyboard easier by making two or more reference points on a touch pad and associating these reference points with two or more keys of a virtual keyboard. There are four reference points (2001-L1, L2, L3, L4, R1, R2, R3, and R4) on the left and right touchpads, respectively.These reference points are s, e, f, c and j, i, l, m on the virtual keyboard. In this case, the characters inputted from the relative position from the reference point felt by the finger can be known without looking at the screen. For example, when the virtual keyboard starts, the pointer is automatically positioned at f and j of the virtual keyboard, and the finger on the touchpad is placed at the reference points 2001-L1 and R1 as shown in FIG. 20B and starts to move the pointer. In this case, the finger on the left touchpad moves from 2001-L1 to L3, and the pointer moves from 'j' to 's' on the screen. If you press the touch pad in that state, 's' will be input. In other words, perception of relative position using the reference point makes it possible to determine the direction in which direction the finger should be moved as in the case of using the keyboard even when using the touchpad. You do not have to. As a result, even in the input method using the pointer, the absolute position can be set like the keyboard, and the virtual keyboard has the same convenience as the actual keyboard. The only difference is that the actual keyboard uses all five fingers while the virtual keyboard using the touchpad uses only one finger. 20B and 20C show the position of the hand on the reference point on the touch pad and the position of the key corresponding to the reference point on the virtual keyboard.

21 is a structure that makes it easier to determine the position of the keyboard by arranging the projection of the pattern having the shape of the puzzle vertically rather than a small projection of the reference point on which the finger is placed on the touch pad. The advantage of the shape of the horizontal and vertical pattern serves to guide the movement of the finger on the touchpad can be a linear movement to facilitate the location of the keyboard as well as the location. The square areas 2101 and 2102 shown in dark colors correspond to the positions of the keyboard 'a' and 'm' of the virtual keyboard, respectively. The irregularities of the rectangular protrusions are shown in the cross-sectional view of FIG. 21B. Since the touchpad is lower than 5mm lower than the attention, the edge edge portion plays a role of guiding the finger, and the protrusions 2101 and 2102 protrude within 1mm so that the position can be recognized in a range that does not interfere with the finger movement. To make it possible. However, in order not to affect the change in the capacitance of the touch pad, it is preferable to form protrusions 2101 and 2102 of about 0.5 mm or less, more preferably about 0.1 mm, and in the case of a mobile phone, it is not preferable that the thickness is increased by the touch pad. Therefore, it is ideal to reduce the height difference between the touchpad as much as possible, and even if the difference is within 1 mm, it can play a role of guiding the finger that the present invention pursues.

22 shows the arrangement of the function buttons accompanying the touch pad and the cross-sectional structure of the touch pad 2400L and 2400R. The structure shown in FIG. 22A is a function button, and a common dome switch (2201, 2202, 2203) and a membrane switch (2404, 2405-spacer; 2406, 2406 '-(+), (-) electrodes are provided under the touch pad. And (b) by tapping the edges of the touchpad (S) 1, (S) 2, (S) 3, (S) 4, (S) 5, and (S) 6) instead of the mechanical buttons. tapping) The change in capacitance of the touchpad was made to activate the switch function. This tapping operation is touched because the area around the touchpad is blocked by the device case ((S) 1, (S) 2, (S) 3, (S) 4, (S) 5, (S) 6). The pad regions 2208L and 2208R do not cause operation of the membrane switch through the vertical movement. In particular, the shape and difference of FIG. 21 provides uneven shapes 2207L and 2207R so that a finger can easily grasp the position of the touch pad. That is, there is only a bend in the x direction and there is no bend in the y direction, so that the x position can be easily detected, and the y direction position sense is used by the edges 2208L and 2208R.

FIG. 23 illustrates a structure in which the membrane switch is not applied under the touch pads 2301L and 2301R in the structure of FIG. 22B, and the switch functions of the membrane switches are located at both sides of the lower ends of the rear surfaces 23b- (B) of the phone. It is a structure instead. These switches are composed of 'L' shaped levers and dome switches 2304L and 2304R, which are operated by applying force at either the bottom, the edge, or the back, and the shape of the hand actually operating the same is shown in FIG. 23C. 23B- (A) shows the position of the finger in landscape mode (character input mode) and 23b- (B) in portrait mode (cell phone mode). The position of these fingers allows the operation of the switches 2303L and 2303R while the thumb moves freely, providing the same ease of operation as when the switch is mounted under the touchpad. Furthermore, as illustrated in FIG. 33, a method of using the capacitance change generated when the touchpad is pressed with a finger is also applicable, and can be used in combination with these switches. Furthermore, these switches 2303L, 2303R) can be omitted, and only the switch function using capacitance change is possible.

x₁ =

x₂ =

x₃ =

x₄ =

x₅ 이고

y₁ =

y₂ =

y₃이다. 마찬가지로 터치패드의 좌표계도

X₁ =

X₂ =

X₃ =

X₄ =

X₅ 이고

Y₁ =

Y₂ =

Y₃ 이다. 본 발명에서 고안된 좌우분리 터치패드의 작동원리가 기존의 터치패드의 작동원리와 상이하다. 즉 일반적인 UI(UI - user interface)에서 커서의 움직임을 결정하는 것은 포인터 입력장치인 터치패드 혹은 마우스로부터 발생되는 신호(

X,

Y-finger's diplacement)로부터 커서의 x, y 방향으로의 이동거리(

x,

y - cursor's displacement)에 해당하는 데이터를 받아들여 커서의 새로운 위치를 선정하는데 반해 본 발명의 문자입력모드에서의 커서 작동은 터치패드의 절대좌표에 의해 결정되는데 함수과계로 설명하면 터치패드의 한 점은 가상키보드의 한 점에 대응된다는 점이다. 말하자면 포인터 입력장치인 터치패드로부터 발생되는 신호(X, Y - 손가락 의 위치 좌표)로부터 커서의 좌표(x,y)를 계산하여 그 좌표에 해당하는 위치에 커서를 위치시키는 것이다. 문자 입력 시에는 두개의 커서를 독립적으로 한정된 영역(좌측 커서의 경우 -x₅ ≤ x ≤ x₅, y₀ ≤ y ≤ y₃ ; 우측커서의 경우 -x₅ ≤ x ≤ x₅, y₀ ≤ y ≤ y₃ )에서 손가락의 위치좌표(X,Y)에 해당하는 커서의 좌표(x,y)에 의해 위치가 선정되며 이러한 방식에 의한 커서의 좌표 계산식(X ->x, Y->y)은 도 24c에 나타나 있다. 예를 들면 문자입력모드에서 오른쪽 엄지가 도 24a의 우측 터치패드의 문자 'p'가 표시된 위치에 닿은 상태에서 'y'로 이동하는 경우와 손가락이 'p'로부터 떨어져서 'y'로 이동하는 경우에 차이가 없다는 점이다. 이점이 일반적인 터치패드의 작동원리와 본 발명의 문자입력모드에서 터치패드를 이용하는 원리와의 차이점이다. 그리고 문자입력이 아닌 일반적인 UI 모드에서는 터치패드 위에서의 손가락의 움직인 거리(

X,

Y)를 커서의 움직이는 거리(

x,

y)로 환산하여 적용하게 되며 사용자의 편리성에 따라 손가락의 이동 거리(

X)에 해당하는 커서의 움직이는 거리(

x)의 비는 임의로 조정될 수 있다. 이러한 커서 작동 원리가 도 24c에 나타나 있다. 따라서 본 발명의 두 개의 터치패드를 이용하여 화면상의 커서를 제어하는 경우 일반적으로 쓰이는 이동거리 신호방식과 절대좌표 신호방식이 혼용된다. 24 illustrates a method of inputting text using two touch pads in the present invention. 24A and 24B show the coordinate system of the touch pad and the coordinate system of the virtual keyboard, respectively, which are the basis of the operation principle of the touch pad which will be described with reference to FIG. 24C. Since touch pad coordinates are separated from left and right and operate independently, the coordinates are divided into L and R, respectively, whereas the virtual keyboard coordinate system is not separated from left and right, so the x-axis range is displayed from -x ₅ to + x ₅ . It is. The features of the virtual keyboard coordinate system

x ₁ =

x ₂ =

x ₃ =

x ₄ =

x ₅

y ₁ =

y ₂ =

y ₃ . Similarly, the coordinate system of the touchpad

X ₁ =

X ₂ =

X ₃ =

X ₄ =

X ₅

Y ₁ =

Y ₂ =

Y ₃ . The operation principle of the left and right touch pads devised in the present invention is different from the operation principle of the conventional touch pad. That is, in the general UI (user interface), the movement of the cursor is determined by a signal generated from a touch pad or a mouse (pointer input device).

X,

Distance of the cursor from the Y-finger's diplacement in the x and y directions (

x,

The cursor operation in the character input mode of the present invention is determined by the absolute coordinates of the touch pad, whereas the function of the touch pad is one function of the touch pad. It corresponds to a point on the virtual keyboard. In other words, the coordinates (x, y) of the cursor are calculated from signals (X, Y-finger position coordinates) generated from the touch pad, which is a pointer input device, and the cursor is positioned at the position corresponding to the coordinates. In character input, two cursors are defined independently (in the left cursor -x ₅ ≤ x ≤ x ₅ , y ₀ ≤ y ≤ y ₃ ; for the right cursor -x ₅ ≤ x ≤ x ₅ , y ₀ ≤ In y ≤ y ₃ ), the position is selected by the coordinates (x, y) of the cursor corresponding to the position coordinates (X, Y) of the finger. ) Is shown in FIG. 24C. For example, in the text input mode, when the right thumb moves to 'y' while the letter 'p' of the right touch pad of FIG. 24a is displayed, and the finger moves to 'y' away from 'p'. There is no difference. This is different from the general operation principle of the touch pad and the principle of using the touch pad in the text input mode of the present invention. And in normal UI mode, not text input, the distance the finger moves on the touchpad (

X,

Y) to the cursor's moving distance (

x,

y) in accordance with the user's convenience.

The moving distance of the cursor (X)

The ratio of x) can be adjusted arbitrarily. This principle of cursor operation is shown in FIG. 24C. Therefore, when controlling the cursor on the screen by using the two touch pads of the present invention, the moving distance signal method and the absolute coordinate signal method generally used are mixed.

Y₁과

Y₃영역에서는 터치패드의 가장자리 모서리를 기준으로 삼아 손가락이 움직이며 상하 이동 폭이 적은데 반해

Y₂ 영역에서는 상대적으로 상하 운동 폭이 심하게 되어

Y₁ 혹은

Y₃ 영역('i'에 해당하는 부분)을 선택하게도 되는 것이다. 이를 보완하기 위해

Y₂ 영역을 크게 함으로서(도 25c 의 'B'의 경우) 동일한 손가락의 움직임에도 실제 가상키보드에서는

y₂ 영역을 선택하여 보다 안정적으로

y₂ 영역에 있는 a, s, d, f, g, h, k, l, ?을 쉽게 선택하고 입력할 수 있게 해 준다. 가상키보드 화면상에서 각 열의 높이(

y₁,

y₂,

y₃)는 동일하더라도 이들 각 열에 해당하는 터치패드의 상, 중, 하 세 개의 영역의 상하 폭이 다르게 했을 때(

Y₁ =

Y₃ <

Y₂ ), 커서의 움직임과 손가락의 터치패드 상에서의 움직임이 연계하는 관계식이 도 25b에 도식적으로 표현되어 있다. Y -> y 변환이 직선적이지 않고

Y₁ (Y₀ ≤ Y ≤ Y₁)과

Y₃ (Y₂ ≤ Y ≤ Y₃)영역에서는

Y₁(=

Y₃)->

y₁(=

y₂=

y₃)으로 대응되고

Y₂ (Y₁ ≤ Y ≤ Y₂)영역에서는

Y₂->

y₂으로 대응된다. 이러한 대응 관계를 이용한 장점이 도 25c에 나타나 있다. 즉 손가락의 움직임이 동일하더라도 각 열이 동일한 폭(

Y₁ =

Y₂ =

Y₃)을 갖는 (A)의 경우 커서가 'a' -> 'i' ->'?'의 경로를 가지게 되나, 가운데 열이 넓은 폭 을 갖는 (B)의 경우 커서가 동일한 'a' -> 'k' ->'?'의 경로로 동일한 열을 지나가게 된다. 실질적으로 손가락의 움직임에 여유가 생겨 손가락의 관절운동에 의해 상하로 움직임이 폭이 커지더라도 커서의 움직임은 동일한 열에서 이루어지게 하는 장점을 갖게 된다.25 illustrates a case where the correspondence between the coordinate system of the touch pad and the cursor coordinate system is nonlinear. This is because the movement of the finger that operates the touch pad is circularly moved by the joints, and thus the linear movement is not easy. Therefore, when the finger moves from left to right or right to left, it is necessarily accompanied by vertical movement. In particular, as shown by 'A' in FIG. 25C, the finger moves in the center of the touchpad.

Y ₁ and

In the Y ₃ area, the finger moves with respect to the edge edge of the touch pad and moves up and down.

In the Y ₂ region, the vertical movement width becomes relatively

Y ₁ or

It is also possible to select the Y ₃ region (the part corresponding to 'i'). To compensate for this

By enlarging the Y ₂ area (in case of 'B' of FIG. 25C), even if the same finger is moved, the actual virtual keyboard

y ₂ area to make it more stable

y Allows easy selection and entry of a, s, d, f, g, h, k, l,? in the ₂ area. The height of each column on the virtual keyboard screen (

y ₁ ,

y ₂ ,

y ₃ ) is the same, when the upper, lower, and lower widths of the three areas of the touch pad corresponding to each of these columns are different (

Y ₁ =

Y ₃ <

Y ₂ ), the relationship between the movement of the cursor and the movement of the finger on the touch pad is shown schematically in FIG. 25B. Y-> y transformation is not linear

Y ₁ (Y ₀ ≤ Y ≤ Y ₁ ) and

In the area Y ₃ (Y ₂ ≤ Y ≤ Y ₃ )

Y ₁ (=

Y ₃ )->

y ₁ (=

y ₂ =

y ₃ )

In the area Y ₂ (Y ₁ ≤ Y ≤ Y ₂ )

Y _2- >

corresponds to y ₂ . The advantage of using this correspondence is shown in FIG. 25C. That is, even if the fingers move the same, each column has the same width (

Y ₁ =

Y ₂ =

In case of (A) with Y ₃ ), the cursor has the path 'a'->'i'->'?', But in case of (B) where the middle column is wide, the cursor is the same 'a'- >'k'->'?' will traverse the same column. Substantially there is room in the movement of the finger, even if the movement is increased up and down by the joint motion of the finger has the advantage that the movement of the cursor is made in the same row.

x,

y)에 해당하는 신호를 제공하는 점이 문자입력 커서를 제어하는 터치패드와 다른 점이다. 따라서 본 발명의 휴대전화기의 전화모 드에서는 실질적으로 두 개의 커서가 존재하지만 하나만을 화면에 나타내거나 두 개를 모두 나타내되 활성과 비활성을 구분하여 작동하게 하는 semi-dual cursor 시스템을 적용할 수도 있다. 그리고 각각의 커서는 그것을 움직이게 하는 터치패드와 작동 영역이 다를 뿐이지 근본적으로 각각의 포인터로서의 기능은 동일 한 것이다. 화면상에서 활성상태에 따라 밝기의 조절이나 색깔의 차이를 주는 방법 혹은 비활성 커서를 화면상에서 사라지게 하는 것은 단지 사용자의 혼동을 막기 위한 것이며 두 개의 커서를 동시에 사용하게 된다. 이상은 두 개의 터치패드를 갖는 경우이고 실제로 세로모드에서 하나의 터치패드만을 사용하여야 하는 경우(도 1b, 도 23c-(C))는 전역모드와 문자입력모드를 변환시켜주는 기능을 갖는 버튼을 이용하여 동일한 터치패드로 두 가지 모드(도 26b-(A), (C))를 상호 전환하여 사용할 수 있다. FIG. 26 illustrates the principle of operating the phone mode in the portrait mode of the touch pad having the structure shown in FIG. FIG. 26A is a view of a hand holding a telephone in a vertical position, and FIG. 26B shows a state in which a phone input mode has already been converted. Comparing FIG. 26 with FIG. 13, FIG. 13A is operated in a user interface (UI) mode, which is a whole area mode in portrait mode, and FIG. 13B is converted to a phone mode. Initially in the phone mode, the system starts in the global mode, but when the finger touches the global touch pad 2603 as shown in (A) and (C) of FIG. 26B, the global cursor 2602 is displayed on the screen by operating in the global mode. The text input mode operates when the finger touches the text input touch pad 2606 and the cursor is changed to the text input cursor 2605. The operating area of these cursors is the total area 2601 and the keypad area 2604 as shown in Fig. 26C. FIG. 26B shows that the inactive cursor is omitted to show the active state, and in the case of the global cursor, the global cursor is moved to '5' as in 26c- (B) showing the character input cursor at the position indicated in 26c- (A). Select and press will also work. That is, the global cursor can also enter characters. However, the touchpad that operates the global cursor has a coordinate change amount (

x,

The point for providing the signal corresponding to y) is different from the touch pad for controlling the character input cursor. Therefore, in the telephone mode of the mobile phone of the present invention, although there are substantially two cursors, only a single cursor is displayed on the screen or both, but a semi-dual cursor system may be applied to distinguish between active and inactive. . And each cursor has a different operating area than the touchpad that moves it, but essentially the function of each pointer is the same. How to adjust the brightness or the color difference according to the active state on the screen or make the inactive cursor disappear from the screen is just to prevent user confusion and use two cursors at the same time. The above is the case of having two touch pads and actually only one touch pad in the portrait mode (FIGS. 1B and 23C-(C)) shows a button having a function of switching between the global mode and the text input mode. By using the same touch pad, the two modes (Figs. 26B- (A) and (C)) can be switched.

X₂ 영역을

X₁과

X₃영역보다 크게 하는 것이다. 이렇게 할 경우 손가락의 상하이동중에 좌우로의 움직임이 있더라도 실제 커서의 움직임은

x₂의 영역 안에 한정되어 안정적인 입력이 가능하게 된다.FIG. 27 shows a flowchart (FIG. 27B) of the coordinate system of the touch pad (FIG. 27A) and the accompanying cursor coordinate calculation method when the touch pad shown in FIG. 25 is used in the portrait mode. The movement of the cursor is shown in Fig. 27C. Unlike the horizontal mode, in the vertical mode rather than the left and right movement of the finger is shifted from side to side when the problem is a problem to correct this

X ₂ area

X ₁ and

It is larger than the X ₃ area. In this case, even if there is a left or right movement in the middle of Shanghai, the actual cursor movement

It is confined within the area of x ₂ to enable stable input.

x,

y)을 산출하여 커서를 움직이고, 문자입력모드에서는 커서의 화면 좌표(x, y)를 산출하여 문자입력커서를 움직이게 한다. 다만 가로모드의 문자입력모드에서는 두 개의 문자입력커서를 움직이기 위해 두 개의 커서 좌표, (x₁, y₁), (x₂, y₂)를 산출하는데 반해 세로 모드에서는 문자입력모드일 경우 문자입력커서 하나만이 표시되게 된다. 그리고 우측 점선으로 표시된 사각형 내의 내용은 터치패드가 하나만일 때에 UI(User Interface)를 구현하는 방법을 보여주고 있다. 즉 도 1b에 보여지는 단일 터치패드 시스템을 위한 UI 구현 방법이다. FIG. 28 schematically illustrates a process of displaying a cursor on a screen by using signals from two touch pads in the present invention. Each touchpad generates (X, Y) coordinate data and provides it to the data processing device. The data processing device controls the global cursor and the text input cursor on the screen so that the coordinates of the screen coordinate change of the general cursor in global mode (

x,

y) is calculated to move the cursor, and in the character input mode, the screen coordinates (x, y) of the cursor are calculated to move the character input cursor. However, in the character input mode of horizontal mode, two cursor coordinates, (x ₁ , y ₁ ), (x ₂ , y ₂ ) are calculated to move the two character input cursors. Only one input cursor will be displayed. In addition, the content in the rectangle indicated by the dotted line on the right shows how to implement a user interface (UI) when there is only one touch pad. That is, the UI implementation method for the single touch pad system shown in FIG. 1B.

FIG. 29 schematically illustrates a method for correcting that the center of the area where the finger contacts the touch pad does not coincide with the reference point when the finger is placed on the reference point of the touch pad. As shown in FIG. 29A, even if a finger (thumb) is placed at a point P _k corresponding to the keyboard 'k', the touch point P _{k, cal} calculated by the touch pad is (X ', Y'), and the actual reference point P _k. It is different from the coordinates of (X, Y). This is shown in detail in FIG. 29B. Therefore, when the coordinates of the cursor are calculated using the touchpad coordinate system shown in FIG. 24A using the method according to FIG. 24C, the cursors are actually overlapped with 'i''o''k''l' as shown in FIG. 29C. It will be located in. Therefore _, to correct P _{k, cal} to the center position of 'k', the touch pad coordinate system is moved by the difference between the actual P _k and P _{k, cal} (D _{k k} , DY _k ) shown in FIG. If you set '-Y'), P _{k, cal} is located at the center of the area representing 'k'. Methods of calculating the coordinates of the cursor in the horizontal mode and the vertical mode (telephone mode) using the new touchpad coordinate system X'-Y 'thus set are shown in FIGS. 29D and 29E, respectively.

t_tap,1,

t_tap,2-의 단락이 연속으로 이어질 경우 또 다른 스위치 기능을 부여할 수 있다. 이는 이미 기존의 포인팅장치로 쓰이는 터치패드의 탭핑을 통한 기능버튼으로의 활용 방법이다. 다만 Z_tap가 Z_p,max나 Z_p,max에 비해 크거나 작을 수 있지만 이는 문제가 되지 않으며 중요한 것은 우연히 터치패드에 닿았다 떨어지는 경우와 구별할 수 있는 단락시간의 크기와 변화이다. 즉

t_tap,1,

t_off,1,

t_tap,2의 범위 설정에 의해 스위치 기능을 부여하게 된다. 이렇게 정전용량의 시간적인 변화를 이용한 탭핑기능의 활용은 도 22a의 기능버튼(2201, 2202, 2203)을 제거하여 도 22b와 나타난 바와 같이 터치패드만으로 이들 기능버튼의 기능을 담당하게 된다. 따라서 도 22b의 (S)1~(S)6의 영역에 각기 다른 기능을 부여하면 된다. 30 illustrates a pressure change by a finger when the touch pad has a function other than a pointing function. The principle that the touch pad calculates the change in pressure is that when the finger presses the touch pad, the area where the finger touches the touch pad increases, resulting in a change in capacitance, which causes the change in pressure to be calculated from the change in capacitance. do. Therefore, for the pointing function, when the finger moves on the touch pad, a small pressure change is generally produced as shown in FIG. 30A. However, unlike the pointing operation, when pressure is applied, the pressure is higher than Z _{t, max} (pressure at touch) as shown in FIG. 30B. Increased Z _{p, max} (pressure at pressing). When the pressure applied by the finger to the actual touch pad is greater than the pressing reference pressure (Z ^o _pr ) by using the difference in pressure, the switch device for the pressing function shown in FIGS. 5 and 7 is provided. You do not need to install it. Here, the reference pressure is the pressure set by the user arbitrarily between the touch pressure and the minimum pressure (Z _{p, min} ) generated when the user presses the touch pad. The purpose of this setting is to ensure that even the smallest pressure (Z _{p, min} ) that appears when the touchpad is pressed can always activate the switch function. In addition, there is another set constant _, Z _{pr (th} -threshold pressure of pressing), which is the starting pressure at which the switch is operated when the switch pressure is to be activated. This is also used to correct the character input error described in FIG. 32, and the detailed description is made in FIG. And touch area (grayed out) duration as shown in FIG.

t _{tap, 1} ,

If a short of t _{tap, 2} – continues in series, another switch function can be given. This is a method of using a function button by tapping a touch pad that is already used as a pointing device. However, Z _tap may be larger or smaller than Z _{p, max} or Z _{p, max} but this is not a problem and the important thing is the size and change of short time that can be distinguished from the case of accidentally touching and dropping the touchpad. In other words

t _{tap, 1} ,

t _{off, 1} ,

The switch function is given by setting the range of t _{tap and 2} . The use of the tapping function using the temporal change of capacitance is performed by removing the function buttons 2201, 2202, and 2203 of FIG. 22A to perform functions of these function buttons only with the touch pad as shown in FIG. 22B. Therefore, what is necessary is just to provide a different function to the area | region of (S) 1-(S) 6 of FIG. 22B.

FIG. 31 illustrates a region of a tappable touch pad 3101 that replaces the function button described with reference to FIG. 30. In fact, as described with reference to FIG. 30, the tapping and pressing functions are divided by the short time of the touch, but the pressing area 3102 and the tapping area (areas except for the pressing area in the area of the touch pad: (S) 1 to (S) 6) Fig. 31- (A) shows a clearer distinction between these two parts, and the right touchpad of Fig. 31- (B) removes these areas and removes the area corresponding to each letter key in the text input mode. It shows an increase. Even if the area of the character key is increased in this way, the tapping areas (S) '2, (S)' 4, and (S) '6 can be kept as they are.

32 is a view illustrating a process of generating an error caused by imparting a button function using a change in a pressing pressure of a touch pad. For example, in order to enter the letter 'k', a finger is placed in the 'k' area of the touch pad and then pressed. In order to explain this, the touchpad is divided into X1.5 to X3.5 (FIG. 32A), and the process of pressing the touchpad at the position of 'k' in the process of moving the finger from the 'j' area to the 'l' area. . In this process, the pressure change is shown in FIG. 32B. The most ideal pressure change is FIG. 32B- (A), but in practice, it is possible from FIG. 32B- (B) to (D). The problem is the case shown in Figure 32b- (D), where the pressure is applied when the finger is in the letter 'k' area, but the maximum pressure is when the finger is in the 'l' area and the user enters it. An error occurs that the desired character is different from the actual input character. The concept introduced in the present invention to correct this is the pressure threshold (Z _{pr, th} : pressure of threshold). This user has a variable pressure that can be set in accordance with the habit of pushing the touchpad based on pressing pressure is assuming a value between (Z ^o _pr pressure of pressing) and Z _tch (pressure of touch). FIG. 32B shows four cases that can occur during the pressing process, in which the change in pressure is shown along the X-axis, and FIG. 32B- (A) shows the most ideal input process in detail in FIG. 32C. It is shown by the change of the pressure according to X coordinate (A) and time (B). When pressure is applied while the finger is in contact with the touchpad, it appears as only one peak at X2.5 as shown in Fig. 32C- (A), so that the pressure change cannot be seen in detail, but when it is displayed for time, time t (X _2.5- ) Pressing starts at, reaching maximum pressure at t (X _pr ) and again at normal touch pressure (Z _tch ) at t (X _2.5+ ). That is, a time point corresponding to the threshold pressure exists before and after the maximum pressure. In the present invention, the error that may occur in the input process is corrected using the present invention. In an ideal pressing process, the two points X _{pr, th-} (threshold pressure point just before X _pr ) and X _{pr, th +} (threshold pressure point immediately after X _pr ), which correspond to the threshold pressure (Z _{pr, th} ), are both characters 'k' Stays in the region of '(X ₂ <X <X ₃ ). However, also in the pressing process for the 32a- (C) X _{pr, th-} is X _{pr, th +} in the area of the character 'k' are staying in the area of the character 'l' leans Fig X _pr determining a running type It stays within the area of the letter 'l'. Accordingly, the pressing process corresponding to FIGS. 32B-C and 32B-D is a pressing process for generating an error of inputting 'l' instead of the letter 'k'. To prevent the occurrence of these errors is not intended to be actually input the character that corresponds to the X _pr would be to enter the letter that corresponds to the X _{pr, th-.}

FIG. 33 is a flowchart illustrating an error that may occur when applying a switch function using a pressure change of the touch pad described with reference to FIG. 32. When the character input mode is started, the data processing apparatus shown in FIG. 28 continuously stores and updates the coordinates corresponding to the threshold pressure according to the change of the pressure as well as the calculation of the cursor coordinates, and thus the threshold pressure Z immediately before the pressing pressure Z _pr . _{pr, th-: In the} schematic diagram, compare the pressing pressure with P ^-1 ) and if the corresponding letter- V (Z _pr ) _-is not the same, the character actually entered is executed by V (Z _{pr, th-} ). It is a schematic diagram.

A = A_p-A_t)에 근거한 것인데 반해 본 발명의 터치패드 위의 절연체(3402)는 탄성체여서 눌려졌을 때에 면적 의 변화만을 가져오는 것이 아니라 두께의 변화(

d1)를 가져와서 누름압력과 터치압력의 차이를 훨씬 크게 하고 그에 따라 감도가 증가하여 큰 힘을 가해주지 않아도 누름입력이 가능하게 하여 도 33에 나타난 바와 같이 많은 힘을 가하기 위해 손가락이 움직이는 오류도 방지할 수 있게 해준다. 그리고 도 21과 도 22에 보여 지는 터치패드위에 위치하는 절연체(3402)막의 요철구조는 터치패드의 정전용량의 변화를 가져오는 요인이 될 수도 있으므로 이럴 경우 터치압력, 누름압력, 문턱압력의 위치에 따른 변화를 가져오게 되어 이를 보정하기 위한 방법으로 도 34(A)에 보여 지는 칸막이형의 절연체를 사용할 수 있다.FIG. 34 schematically illustrates a method of using an elastic body with an insulating film 3402 in contact with a finger on the touch pad 3401 in order to maximize the difference between the touch pressure and the pressing pressure. The general touch pad has no difference in thickness when the insulator is made of inelastic material (3402U) and when it is touched and pressed, so the pressure change calculated by the touch pad is merely a change in the area where the finger 3403 touches the touch pad.

A = A _p -A _t ), but the insulator 3402 on the touchpad of the present invention is an elastic body, and when pressed, it does not only change the area but also changes the thickness (

d1) by bringing the difference between the pressing pressure and the touch pressure much larger and accordingly the sensitivity is increased so that the input can be pressed even without applying a large force, as shown in FIG. To prevent it. In addition, the uneven structure of the insulator 3402 film disposed on the touch pad shown in FIGS. 21 and 22 may be a factor that causes a change in capacitance of the touch pad. The partition-type insulator shown in FIG. 34 (A) can be used as a method for correcting the change.

t₁,

t₂,

t₃)이 설정된 시간(

t_space)보다 적은 경우에만 실행하면 스페이스와 백스페이스를 입력하고자 손가락을 의도적으로 움직이는 경우와 구별되게 된다. 이러한 기준으로 사용되는

t₁,

t₂,

t₃의 경우 사용자의 습관 혹은 편리성에 따라 하나를 선택하면 된다. FIG. 35 illustrates that a space and a back space, which are most used in the text input mode, may be input by selecting a space on a virtual keyboard using a switch function, but a finger may be parallel to the touch pad on the touch pad. It just shows how to make the input work by simply moving left and right. That is, it is common for a finger to move from side to side for character input, but as shown in FIG. 35A, a quick round trip from left to right or right to left of the touch pad is intentionally moved to perform a special character or function as in the present invention. If not, it does not happen for actual character input. Therefore, the thumb that operates the left touchpad is mainly on the right side, so the right->left-> right movement is convenient, and the thumb that operates the right touchpad is biased on the left side, so the left->right-> left movement is convenient. If you give back motion and space function to each movement, character input will be easier. For this operation, the data processing apparatus of FIG. 28 stores the time at the point passing the reference coordinates (X ₁ , X ₂ , X ₃ , X ₄ , X ₅ ) of the fingers so that the trajectories they draw are shown in FIGS. 35C and 35D. If is true, space or backspace will be executed. However, it is possible to draw the trajectories corresponding to ①, ②, ③ for actual character input, but in that case, the time for drawing such trajectory (

t ₁ ,

t ₂ ,

t ₃ ) is the time (

If you run it only if it is less than t _space , you will be distinguished from the intentional movement of your finger to enter space and backspace. Used as these criteria

t ₁ ,

t ₂ ,

In case of t ₃ , one can be selected according to user's habit or convenience.

36 illustrates an initialization process required to perform a function corresponding to a function button using a treatment pad. Assumption First, the pressure calculation set by the touch pad is determined by the area where the finger touches the touch pad, so the size of the finger is different for each user, and then the pressure and threshold pressures are set. After this process, the touch short circuit time setting to perform the function of the function button by tapping and the touch pad coordinate system described in FIG. 29 are executed in the horizontal mode and the vertical mode. ) And then used to calculate the cursor coordinates in character input mode.

The computer was converted into a graphical user interface (GUI) system since the advent of the mouse as a device that allows the computer monitor to move the pointer that specifies the content and location of the executable command. Since then, as computers have become smaller and more portable, touch pads and pointing sticks have been developed and used as built-in pointing devices that can replace the mouse for added convenience. Similarly, today's portable digital devices, such as PDAs, PMPs, and even cell phones, are getting closer to computers. However, these devices are too small to install pointing devices on them, so the screen is touch screen to form a UI (User Interface) system that is close to a computer. To operate. Therefore, portable digital devices with perfect UI, such as notebook PCs with built-in pointing devices, have been impossible to implement because of their size limitation. In particular, in the case of mobile phones, numeric input is the main function, so when pointing devices such as touch pad, pointing stick, and trackball are installed, they do not have enough space to occupy and they only support the main function of numeric input. Will be maintained. Accordingly, the present invention is to provide a structure for simultaneously performing the character input function and the original pointing function of the keypad of the mobile phone using the touch pad as a pointing device.

Thanks to advances in semiconductor technology, vacuum tube-based computers in the mid-20th century are now miniaturized and integrated so that they can fit in your hand. (laptop) Routines have already been made through computers and PDAs. Furthermore, devices such as mobile phones, MP3s, and PDPs, which were previously unrelated to computers, are in charge of additional functions such as computers, or are in the age of convergence where these functions are included in portable Palmtop computers. With this trend, it is time to introduce computer graphical user interface (GUI) systems to these small electronic devices. However, the pointing device, which is essential for a graphical user interface (GUI) system of a computer, has not been applied due to the space limitations and usage problems in which these small electronic devices can be mounted. In order for the pointing device to be applied to use a graphical user interface (GUI) system, the size of the touchpad or pointing stick already used in a laptop computer and the like and the structure and size of the function button used with the pointing device need to be changed. will be. Designed to overcome this point, touch screens and input pens are currently being applied to palmtop computers or PDAs, but such touch screens or input pens are not easy to apply in one hand such as mobile phones. Accordingly, it is a technical problem of the present invention to provide an input device using a touch pad which is easy to point like a mouse and makes text input easier than a keypad of a general mobile phone. In addition, in some cases, it provides a structure that can be used with one hand to provide a method that can be used in the same way as a conventional mobile phone.

The configuration of the present invention is simply a design of a portable digital device having an input device in which all inputs are made of a touch pad. In other words, the computer's keyboard and mouse are integrated into the touchpad. As shown in FIG. 1B, when the touch pad is used instead of the keypad, the pointing function is facilitated, but character input is not easy. Therefore, a key component of the present invention is to overcome these disadvantages, which is to provide a structure of a touch pad that provides the same or easier convenience as using a keypad for text input.

In general, the touchpad arranges additional function buttons around the touchpad to execute the pointing function. As shown in FIG. 2B, the function of these function buttons can be changed in various ways according to the position of the hand. However, when operating a finger with a touch pad as in FIG. 2A, it is inconvenient to operate the function buttons. It is a factor that causes. Even when using two fingers, operation of the function button is inconvenient than pressing the keypad. Moreover, even if the touch button function of the touch pad is generally replaced with a tapping operation, the tapping operation does not alleviate inconvenience because the tapping operation involves additional finger movements. Therefore, as shown in FIG. 5, the touch pad itself is responsible for a button function so as to omit an additional finger movement accompanying command execution or character input using the function button of the touch pad. Configuration. The difference depending on the presence or absence of a button function of the touch pad is illustrated in FIGS. 3 (without a button function) and FIG. 4 (with a button function). That is, in the case of a touch pad having a button function, the character input is performed by the same hand gesture as in the case of using the keypad. When the touch pad has such a push button function, a mechanical method such as a dome switch operation by a lever-shaped movement (FIGS. 5 and 6) and a membrane switch installed under the touch pad to operate a switch by a push operation (FIG. 7) There is also a method of installing the switch at a convenient location separately from the touch pad (Fig. 23), and more simply the method of adding a switch function using the pressure recognition function of the touch pad (Fig. 23a, 30, 32), etc. There is this.

In the second configuration of the present invention, two touch pads are installed (FIG. 9) so that the character input method is the same as the method through the keyboard (FIG. 8). In fact, the structure of the mobile phone, which can use two touchpads, can be a folder type (Figs. 10, 11, 12) and a slider type (Fig. 18). To be. Therefore, both the mobile phone's unique function and the input function as a digital device can be easily performed.

X,

Y)에 해당하는 변위의 크기에 비례하여 화면상의 포인터의 변위(

x,

y)가 이루어지게 된다. 이에 반해 본 발명에서는 이러한 일반적인 터치패드의 변위에 의한 작동방식과 더불어서 터치패드의 한 점(X, Y)이 화면상의 한 점(x, y)에 대응하는 1대1 대응방식에 의한 작동 원리를 동시에 가진다. 특히 이러한 1대1 대응방식에 의한 작동원리는 문자입력을 위한 포인팅 기능에 적용되어 핸드폰의 키패드를 작동시키거나 컴퓨터의 키보드를 작동시키는 것과 같이 터치패드의 일정한 영역이 특정한 문자 혹은 숫자를 대표하게 한다. 이 점이 기존의 터치패드를 작동하게 하는 방식과 다른 점이다. 도 28이 본 구성에 따르는 두 개의 터치패드를 이용한 입력 방식의 흐름도를 보여주고 있다. 문자입력을 위해서는 화면상의 포인터를 좌표 1대1 대응방식으로 제어하고 그 외의 포인팅작업에 필요한 포인터의 움직임에는 변위를 이용한 대응방식이 적용되고 있다. 다만 도 14, 15, 16에서 보여지는 가로모드에서는 문자입력을 위해 온전한 키보드가 사용되어 두 개의 터치패드를 동시에 이용되며 세로모드에서는 키패드의 모양을 갖는 간이키보드를 이용하게 되어 하나의 터치패드만을 사용하게 된다. According to the third aspect of the present invention, when a character is input using a touch pad, a method of using a touch pad and a coordinate on the touch pad and the position of a pointer on the screen are used in a one-to-one correspondence. In other words, the general principle of touchpad operation is that it doesn't matter where the finger is initially placed on the touchpad, only the difference between the initial position (X _i , Y _i ) and the last position (X _f , Y _f ) (

X,

The displacement of the pointer on the screen relative to the magnitude of the displacement

x,

y) is made. On the contrary, in the present invention, in addition to the operation by the displacement of the general touch pad, the operation principle of the one-to-one correspondence method in which one point (X, Y) of the touch pad corresponds to one point (x, y) on the screen is described. At the same time. In particular, this one-to-one operation principle is applied to the pointing function for text input so that a certain area of the touchpad represents a specific letter or number, such as operating the keypad of a mobile phone or the keyboard of a computer. . This is different from the way the existing touchpad works. 28 shows a flowchart of an input method using two touch pads according to the present configuration. In order to input characters, the pointer on the screen is controlled in a coordinated one-to-one correspondence method, and a correspondence method using displacement is applied to the movement of the pointer required for other pointing operations. However, in the horizontal mode shown in FIGS. 14, 15, and 16, an entire keyboard is used for text input and two touch pads are used at the same time. In the vertical mode, a simple keyboard having the shape of a keypad is used so that only one touch pad is used. Done.

The fourth configuration of the present invention is a practical UI implementation in a portable digital device by using the touchpad as an input device replacing the mouse and the keyboard at the same time. In the PDA, the UI is implemented by the touch screen method, but it is difficult to implement the UI in a smaller mobile phone, so the touch pad of the present invention can be implemented in the small mobile phone in which the mobile phone does not have a screen similar to that of the PDA. To let them do. Examples of this are shown in FIGS. 13, 14, 15, 16 and 17. Furthermore, the configuration of the present invention is only applicable to the input device of the electronic dictionary, PMP, PDA, Figure 19 shows an example applied to the electronic dictionary.

The fifth configuration of the present invention is to make a reference point in the form of protrusions, grooves, or irregularities on the surface of the touch pad to more easily identify the position of the finger in the one-to-one correspondence between the touch pad and the screen. It may have a dot shape as shown in FIG. 20 or may have a grating uneven shape as shown in FIGS. 21 and 22. The advantage of this reference point is to make it easier to identify the position on the touchpad of the finger so that you can move your finger to a position that corresponds to the letter or number you want to enter without looking at the screen. This has the advantage of making it easier to identify relative positions. In addition to the irregularities on the touch pad, the edges of the interface formed by the touch pad with the surroundings may also serve as reference points. One way to take advantage of the edges of the touch pad interface is to divide the touch pad area into three levels: upper, middle, and lower, so that the upper and lower areas operate as reference points and the middle area is separated from the corners. It is recognized as a part and can be easily located. This is how we use a virtual keyboard with three columns. In other words, the five-row virtual keyboard shown in FIG. 9A allows a user to select many characters on the screen, thereby making selection easier than the virtual keyboard of FIG. 9B, but how easily the positions corresponding to these characters on the actual touchpad can be identified. In this regard, the three-row virtual keyboard shown in FIG. 9B is advantageous and furthermore, it is a method that makes best use of the advantages of using two touch pads.

X₁ =

X₂ =

X₃ =

X₄ =

X₅) 마찬가지로 세로폭도 동일하며(

Y₁ =

Y₂ =

Y₃) 화면 좌표계의 경우 더 정확하게는 화면의 가상키보드의 좌표계의 경우도 가로 폭과 세로 폭이 각각 동일한 크기를 갖는다.(

x₁=

x₂=

x₃=

x₄=

x₅,

y₁=

y₂=

y₃) 따라서 도 24b에 나타나 있는 바와 같이 문자입력 포인터(십자형 커서)가 화면상에서 다음과 같은 좌표계 영역에 있을 경우A sixth aspect of the present invention is the setting of the one-to-one correspondence relationship between the touch pad coordinate system and the screen coordinate system used for text input. The most typical relationship is shown in FIG. 24 as a case where the area in which each letter or number is represented is constantly set. That is, in the case of the touch pad coordinate system, the widths of the areas representing each character are the same (

X ₁ =

X ₂ =

X ₃ =

X ₄ =

X ₅ ) Similarly, the height is the same (

Y ₁ =

Y ₂ =

Y ₃ ) In the case of the screen coordinate system, the width and the vertical width of the virtual keyboard coordinate system have the same size.

x ₁ =

x ₂ =

x ₃ =

x ₄ =

x ₅ ,

y ₁ =

y ₂ =

y ₃ ) Therefore, as shown in Fig. 24B, when the character input pointer (cross cursor) is in the following coordinate system area on the screen.

x _L2 <x ≤ x _L3

y ₂ <y ≤ y ₃

  Pressing the execute button (in the case of FIGS. 5, 7, 22 and 23a, the touch pad push switch; corresponding to the separate push switch in FIG. 23b), the letter 'd' is input. For this purpose, the position of the finger on the touchpad should be located in the following position on the touchpad coordinate system in the same way.

X _L2 <X ≤ X _L3

Y ₂ <Y ≤ Y ₃

X,

Y)를 포인터의 변위(위치 변화량 :

x,

y)에 대응시키는 방식이다. 다만 변위의 대응 비례상수 즉

x=Q

X 를 결정하는 상수 Q는 사용자의 편리성에 의해 제어될 수 있다. 도 14a의 '전역 1커서 시스템'에서 도 14g와 같이 문자입력을 위한 문자(Text) 입력모드로 전환하면 '한정영역 2 커서 시스템'으로 작동하게 되며 이 때에 포인터는 좌우 두개로 가상키보드의 좌,우측에 배치되고 이 영역 안에서만 작동하게 되는 것이다. 더 나아가서 터치패드의 좌표계를 도 25a와 같이 조정할 경우 문자입력이 한결 수월해지는데 이는 터치패드를 작동하게 되는 손가락(엄지)이 자연스러운 관절운동에 의해 만들어내는 궤적은 직선이 아니라 곡선형태를 가지게 되기 때문이다. 말하자면 도 25c에 보여 지는 바와 같이 각 문자에 해당하는 터치패드의 영역이 모두 동일하다면 문자열 'h j k l ;'에 해당하는 가운데 영역을 가로지를 때 손가락이 가운데 영역에서 벗어나 위쪽으로 치우쳐져서 'k'대신에 'i'를 입력하는 경우가 발생할 수 있는 것이다. 이러한 문제를 수정하는 방안이 터치패드 좌표 영역에서 가상키보드의 가운데 영역(

Y₂)를 아래쪽(

Y₁)과 위쪽(

Y₃) 영역보다 상대적으로 크게 만드는 방법이다. 이렇게 영역의 폭이 달라져서 화면좌표계가 산출되는 변환식도 도 25b에 나타난 바와 같이 각 영역이 다르게 된다.The relationship between the coordinates of the finger on the touch pad and the coordinates of the character input pointer (cursor) on the screen is shown for each of the X and Y coordinates of the left and right fingers in FIG. 24C. 24C shows a flowchart only for the coordinate correspondence scheme for the input execution process. Referring to FIG. 14 as an example, FIG. 14A is an initial screen of a landscape mode, in which a single pointer (arrow cursor) is moved, and an area where the pointer can move is called an 'all area covering cursor' because the entire screen is moved. The method of controlling the global cursor is the same as the pointing method by the conventional touch pad.

X,

The displacement of the pointer (Y)

x,

y). The corresponding proportionality constant of the displacement

x = Q

The constant Q that determines X can be controlled by the user's convenience. In the 'Global 1 Cursor System' of FIG. 14A, when switching to a text input mode for character input as shown in FIG. 14G, the system operates as a 'limited area 2 cursor system'. It is placed on the right side and works only within this area. Furthermore, when the coordinate system of the touch pad is adjusted as shown in FIG. 25A, character input is easier because the finger (thumb) that operates the touch pad has a curved shape instead of a straight line. . In other words, as shown in FIG. 25C, if the touch pad areas corresponding to each character are all the same, when crossing the middle area corresponding to the string 'hjkl;', the fingers are shifted upward from the center area and replaced by 'k'. Typing 'i' can happen. One way to fix this problem is to touch the center area of the virtual keyboard (

Y ₂ ) down (

Y ₁ ) and up (

Y ₃ ) to make it larger than the area. In this way, the conversion equation for calculating the screen coordinate system by changing the width of the area is different as shown in FIG. 25B.

The seventh configuration of the present invention is to enable the horizontal, vertical mode conversion of the mobile phone by the conversion of the X-Y coordinate axis of the touchpad. In fact, when the mobile phone is used for a call, it is held in the form as shown in FIG. 26, and the screen is narrower to place an intact virtual keyboard. Instead, it includes additional keypads corresponding to call, cancellation, and termination in addition to the 12 numeric keypads of the existing mobile phones. The virtual keypad is configured on the screen to provide a text input mode. As in the case of using the horizontal mode, the width of the middle area is also easy to input characters even in the vertical mode. 28 is a diagram showing a change in the touch pad signal conversion method according to the seventh configuration of the present invention. In other words, in the pointer control method based on the displacement, the method of controlling two pointers (cursors) at the same time as the control method based on the coordinate values (x, y) is added.

An eighth aspect of the present invention is to provide a method for correcting that the center of a user's finger recognized by the touch pad may be different from the point where the actual user recognizes the reference point of the touch pad. As shown in FIG. 29A, when the finger touches a part corresponding to the letter 'k', the touch pad does not designate a part that the user feels as the center of the finger as the center of the finger. Each person has a different shape of the finger, and the shape of the surface touching the touch pad will vary according to the size and shape of the finger. In the case of a touch pad using actual capacitance, a point point (not a face) is calculated by calculating a centeroid for each of the X and Y axes from the capacitance distribution curve in the X-axis and Y-axis directions of the finger with the touch pad. These X _centroid , Y _centroid is defined as the point of contact of the finger, and to calculate this centroid, the touchpad is larger than the uneven area (X ₀ <X <X ₅ , Y ₀ <Y <Y ₃ ) Bold dotted area of 29c-2901). And when you actually use a mobile phone, the surface of the finger touches the touchpad may be different for each person, but the same person to hold the phone is the same way to create a constant contact pattern. When the finger center point P _calc of the touch pad calculated from such a pattern does not match the center point P felt by the actual user, the coordinate change of FIG. 24C, 25B, 26E, and 27B causes a problem. That is, as shown in FIG. 29C, even if the actual finger is located in an area corresponding to 'k' of the touch pad, the center point P _{k, calc. Of} the finger calculated by the actual touch pad is the letters 'i', 'o', and 'k'. ',' l 'is located in the overlapping area, so the user does not enter' k 'unlike the user's intention. The method of correcting this is to store the coordinates of the respective center points, which are located next to the fingers at 'h', 'j', 'k', 'l', and ';', and then the X shown in Fig. 29C from the coordinates of these center points. ' _R1 , X' _R2 , X ' _R3 , X' _R4 is calculated, and then X ' _R0 and X' _R5 are calculated from X ' _R1 and X' _R4 . Similarly, the correction in the Y-axis direction is P _{k, calc.} For 'i', ',' _. Y ' ₁ and Y' ₂ are calculated by calculating the coordinates, and Y ' ₀ and Y' ₃ are calculated again from these to correct the entire coordinate system. This newly corrected 'real coordinate system'(X'-Y') is used to calculate the position of the actual character input pointer, which is shown in Figs. 29D and 29E. In FIG. 29D and FIG. 29E, the portion labeled 'change input coordinate system' refers to a process of converting the nominal coordinate system XY of FIG. 29A to the real coordinate system X'-Y of FIG. 29C.

t_pr)으로 정의될 수 있다. 이렇게 누름기준압력(Z^o _pr)을 정의하는 이유는 터치압력(Z_t,max)이 누름동작이 아닌 터치동작에서 생기는 경우에 우연하게도 누름문턱압력을 넘어서는 경우가 있을 수 있는데 이러한 경우 그 누르는 압력이 누름기준압력보다 일반적으로 작으므로 누름동작으로 오인하는 경우를 방지하기 위한 상수이다. 통상적으로 이 누름기준압력은 최소 누름압력보다 약간 작게 하여 우연하게 높은 압력을 수반하는 터치 동작으로 인해 누름스위치가 작동하지 않도록 하며 또 의도한 누름동작은 도 30b에 보이는 것과 같이 최대, 최소 누름압력이 누름기준압력보다 높게 되므로 사용자의 의도적인 누름동작이 스위치 기능으로 작동하게 하여주는 기준 상수인 것이다. 일반적으로 노트북에 쓰이는 터치패드는 탭핑에 의한 기능버튼 수행을 이미 사용하고 있다. 도 30c는 터치패드를 탭핑할 경우에 발생되는 압력의 변화를 보여주고 있는데 이 때 발생하는 압력의 최대치를 탭핑압력(Z_tap)이라고 하면 실제로 탭핑압력이 터치압력 혹은 누름압력과 동일한 경우가 발생할 수도 있다. 하지만 탭핑을 인식하는 것은 탭핑압력보다는 터치의 단락이 이뤄지는 시간이다. 즉 도 30c에 보여지는 것처럼 터치지속시간

t_tap과 touch-off 시간

t_off가 일정한 시간 내에서(

t(t)₁<

t^o _tap,

t(o)₁<

t^o _tap : 여기서

t^o _tap는 사용자가 정할 수 있는 탭핑 기준시간) 연속으로 이뤄지면 탭핑 기능을 실행하게 된다. 이러한 조건은 우연히 손가락이 터치패드에 닿을 경우(도 30c의

t_tap,2에 해당) 터치지속시간이 탭핑기준시간(

t^o _tap)보다 길거나(

t_tap,2>

t^o _tap) 터치 단락시간이 탭핑기준시간(

t_off,2>

t^o _tap )보다 길어져서 우연한 터치가 탭핑 기능으로 잘못 작동하는 것을 막아주게 되는 것이다. 이러한 탭핑기능을 담당하는 영역은 핸드폰의 몸체로 터치패드(3101)가 둘러싸여 있는 영역(도 31의 (S)1, (S)2, (S)3, (S)4, (S)5, (S)6 영역)으로 정하는 것이 탭핑하는 동안 터치패드가 눌려지는 것을 막아주므로 탭핑을 자유롭게 하여 준다. 원리상으로 탭핑에 의한 압력의 변화로 기능버튼의 기능을 수행할 때와 누름동작에 의한 압력변화로 기능버튼의 기능을 수행할 때 압력이 지속되는 시간의 패턴이 구분 되므로 굳이 탭핑영역((S)1, (S)2, (S)3, (S)4, (S)5, (S)6)과 누름영역(3102)을 구분할 필요가 없이 도 31B의 우측터치패드와 같이 요철부분을 실질적인 터치패드의 가장자리까지 확장하고 탭핑영역과 중첩되어 각각의 문자 혹은 숫자를 대표하는 영역을 더 넓게 하는 방안도 가능하다. 이 경우 손가락이 각각의 영역을 쉽게 파악하게 하여 문자입력이 쉽게 이루어지도록 할 수 있다. The ninth configuration of the present invention is the performance of the function button using the pressure sensing function of the touch pad. Three types of pressure changes when touching the touchpad with a finger are shown in FIG. 30. FIG. 30A is a change in pressure during a general pointing operation, FIG. 30B is a change in pressure when a pressing operation is performed, and finally, FIG. 30C is a change in pressure occurring during a tapping operation. In terms of pressure, the greatest pressure occurs during the pressing operation. When the pressure at this time is called the pressing pressure (Z _pr ), the pressing pressure is generally generated while the finger is touching the touch pad. Changes in the form of camels, etc. Therefore, the point at which the pressing pressure starts to be greater than the touch pressure, t (p) _{1, i} or t (p) _{2, i} corresponds to the switch on and the pressing pressure ends, t (p) _{1, f} Or t (p) _{2, f corresponds} to the switch off. However, since it is difficult to actually set the starting point of the pressing pressure, a pressure slightly larger than the touch pressure (Z _{t, max} ) is defined as the pressing threshold pressure (Z _{pr, th} -Threshold pressure of pressing). And the pressing operation is started, to the time point corresponding to the pushing pressure on the push-up threshold pressure _{(pr t, th-)} to switch on and past the push reference pressure (Z ^o _pr) dadareuneun again to push the pressure threshold time (t _{pr , th +} ) corresponds to the switch off. The time difference between these two push threshold pressure points is the actual hold time (

t _pr ). The reason for defining the pressing reference pressure (Z ^o _pr ) is that if the touch pressure (Z _{t, max} ) occurs at the touch operation instead of the pressing operation, it may happen to exceed the pressing threshold pressure in such a case. Since it is generally smaller than the pressing reference pressure, it is a constant to prevent the mistake of the pressing operation. Typically, this pressing reference pressure is slightly smaller than the minimum pressing pressure so that the touch switch does not operate due to a touch operation involving an accidentally high pressure, and the intended pressing operation has a maximum and minimum pressing pressure as shown in FIG. 30B. Since it is higher than the pressure reference pressure, it is a reference constant that makes the user's intentional pressure action operate as a switch function. In general, the touchpad used in notebooks is already using a function button by tapping. FIG. 30C illustrates a change in pressure generated when the touchpad is tapped. If the maximum pressure generated at this time is called tapping pressure (Z _tap ), the tapping pressure may actually be the same as the touch pressure or the pressing pressure. have. But recognizing the tapping is the time when the touch is shorted rather than the tapping pressure. In other words, the touch duration as shown in Figure 30c

t _tap and touch-off time

t _off within a certain time (

t (t) ₁ <

t ^o _tap ,

t (o) ₁ <

t ^o _tap : where

t ^o _tap executes the tapping function when the tapping time is set by the user. This condition occurs when a finger accidentally touches the touchpad (see FIG. 30C

t _{tap, 2} ) Touch duration is the tapping reference time (

longer than t ^o _tap )

t _{tap, 2} >

t ^o _tap ) Touch short time is the tapping time (

t _{off, 2} >

t ^o _tap ), which prevents accidental touches from misbehaving by tapping. The area in charge of the tapping function is an area in which the touch pad 3101 is surrounded by the body of the mobile phone ((S) 1, (S) 2, (S) 3, (S) 4, (S) 5, (S) area 6) prevents the touchpad from being pressed during tapping, thereby freeing tapping. In principle, the tapping area ((S) is distinguished when the function of the function button is performed by the change of pressure due to the tapping and the time duration of the pressure is distinguished when the function button is performed by the pressure change by the pressing operation. ) 1, (S) 2, (S) 3, (S) 4, (S) 5, (S) 6) and the pressing area (3102) need not be distinguished, as shown in FIG. 31B, It is also possible to extend to the edge of the actual touchpad and to overlap the tapping area to make the area representing each letter or number wider. In this case, the finger can easily grasp each area so that the text can be easily input.

The tenth configuration of the present invention is a method for compensating for a problem that an input of an unwanted character may occur due to a change in the position of a finger during a pressing operation for text input because the area of each character assigned to the touch pad installed in the mobile phone is not large. . That is, the finger may move due to the joint motion of the finger when pushing the push switch (FIGS. 5 and 7) or when the touch pad is pressed to generate a pressure change on the touch pad or when a separate switch as shown in FIG. 23B is pressed. Even if the contact surface is changed, it is a way to input a character represented by the position of the finger at the time when the pressure is applied. This configuration of the present invention is well illustrated in FIG. For example, in the process of entering the letter 'jkl', the pressure change only before and after the letter 'k' is entered, the finger moves to the right from the center position (X = X _1.5 ) of the area corresponding to the letter 'j'. Move to the center of the area representing the letter 'k' (X = X _2.5 ) and enter 'k' and again to the right to enter the letter 'l', the center of the area representing the letter 'l' (X = X 32b shows the change pressure during the process of moving to _3.5 ). A virtual ideal input process is shown in FIG. 32B- (A). The finger stays in touch and reaches the position of X = X _2.5 , presses the pressure without reaching the finger to reach the pressing reference pressure (Z ^o _pr ), then recovers the touch state and moves to the area indicating the letter 'l'. Shows. In practice, however, a pressure change in the form shown in FIGS. 32B- (B), (C), and (D) may occur. Among these, in the case of FIG. 32B- (D), the pressing pressure is the pressing reference pressure (Z ^o _pr ). The character at the time when the character input occurs when the character reaches to reach to 'l' instead of the intended 'k' occurs a problem that needs to be input again. The configuration of the present invention to compensate for this is the utilization of the pressure threshold (Z _{pr, th} -threshold pressure of pressing). As shown in FIG. 32B, the pressing threshold pressure Z _{pr, th} is a variable determined by the following equation according to the user's convenience between the pressing reference pressure Z ^o _pr and the touch reference pressure Z _tch , and the user is a constant. You just need to decide.

Z _{pr, th} = Q _{pr, th} (Z ^o _pr -Z _tch )

t_pr=t(X_pr,th+)-t(X_pr,th-))이 정해진 누름기준시간(

t^o _pr)보다 길어질 경우 키보드의 shift를 눌러주는 효과를 가져오게 하기 위함이다. 이를테면 도 15b에 나타난 바와 같이 영문자의 경우 대문자 소문자를 구별하여 입력하기 위해 기능버튼을 추가로 눌러줘야 하는데 이를 누름기준시간을 설정함으로서 누름압력의 지속으로 동일한 효과를 가져오게 할 수 있는 것이다. 따라서 본 구성의 Z_pr,th-는 switch-on 기능을 Z_pr,th+는 switch-off 기능을 담당하는 것이다. 다만 본 구성과 같이 누름지속시간에 따른 shift 기능을 부여할 경우는 굳이 기능버튼을 눌러 shift키의 효과를 수행할 필요가 없게 된다. 다만 지속적으로 second key set(영문자의 경우 대문자에 해당)을 이용하여야 할 경우는 기능버튼을 이용하여 cap-lock 기능을 작동하는 것이 편리하다. 따라서 본 발명에서는 이러한 shift key의 유지를 위한 기능버튼의 기능도 도 31에 보여지는 터치패드의 외곽((S)1, (S)2, (S)3, (S)4, (S)5, (S)6)영역을 탭핑 함으로서 구현될 수 있다. 따라서 영어의 대문자와 같이 second key set의 연속적이 사용이 필요한 경우는 기능버튼을 이용하여 shift 기능을 유지하고, 문장의 첫머리에 대문자로 쓰여야 하는 영문자와 같이 가끔 쓰이는 shift 기능은 누름압력 지속에 의해 구현하는 것이 본 발명의 구성이다. 이러한 누름압력의 지속을 이용한 구성 원리가 도 32c-(B)와 도 32d-(B)에 나타나 있다. 도 32c-(B)는 문자 'K'를 입력하는 예를 도 32d-(B)는 'k'를 입력하는 예를 보여주는데 가로축이 X좌표를 표현하는 경우 도 32d가 더 오랫동안 누름동작이 유지되는 것으로 착각할 수 있지만 중요한 것은 시간에 따른 압력변화도표에서 누름시간(

t_pr)이 누름기준시간(

t^o _pr)보다 오랫동안 유지하느냐의 여부이다. 따라서 누름지속시간은 오히려 도 32c가 더 길다. 즉 도 32c-(B)와 도 32d-(B)에서 누름기준시간(

t^o _pr)은 흐린 영역으로 표시되어 있는데 도 32c-(B)의 경우는 누름시간이 그 기준시간보다 긴 경우(

t_pr >

t^o _pr)이고, 32d-(B)의 경우는 누름시간이 그 기준시간보다 짧은 경우(

t_pr<

t^o _pr)여서 전자는 'K'를 후자는 초기누름문턱압력(Z_pr,th-)에서의 대표문자인 'k'를 입력하게 된다. 이러한 본 구성의 문자 보정과정을 흐름도로서 나타낸 것이 도 33이다. 이상은 터치패드의 압력에 의한 문자입력스위치 기능을 설명한 것이지만 도 5, 도 7 및 도 23b의 기계적인 스위치를 이용 하여 문자입력을 실행하는 경우에도 적용될 수 있다. 즉, 도 32에 표시된 t(X_pr,th-)와 t(X_pr,th+)는 각각 이들 스위치의 작동시점(t_on)과 종료시점(t_off)에 상응하여 동일한 원리로서 입력문자를 보정하는데, 기계적 스위치가 작동하는 시점이 대표하는 문자-V(t_on)-가 스위치의 작동 종료시점이 대표하는 문자-V(t_off)-와 동일하면 V(t_off)을 동일하지 않으면 V(t_on)을 입력하는 것이다. 그리고 이와같이 기계적인 입력스위치(도 5, 도 7, 도 23b)를 이용하는 경우에도 누름압력에 의한 입력문자 보정방법을 같이 적용할 수 있는데 그 이유는 이들 기계적 스위치를 작동할 때 터치패드에 누름압력이 작동하게 되고 보통의 경우 스위치작동 시점(t_on)보다 누름문턱압력 시점(t(X_pr,th-))이 빠르게 되므로 V(t_off)와 V(t(X_pr,th-))이 동일하면 V(t_off)을 입력하고 다를 경우는 V(t(X_pr,th-))을 입력하는 방법이다. 이는 사용자가 선택할 수 있는 선택사양으로 제공되면 사용자의 누름동작 패턴에 가장 적합한 상황을 이룰 수 있게한다.Wherein Q _{pr, th} is determined in the range of about 0.5 <Q <0.9 as a proportionality constant that the user specifies, Z ^o _pr and Z _tch is there is be done during initialization of the touch pad Z _tch is a user and typically their This value is the maximum value of the touch pressure when the finger moves on the touch pad in the usual way. And Z ^o _pr is 90% of the minimum value (Z _{p, min} ) among the pressing pressures obtained by pressing the designated area as the user normally uses, which is also larger than Z _{pr, th} It must be a value. This pressing pressure threshold (Z _{pr, th)} the appointed actually Press Press threshold pressure to the pressure _(pr Z) based on the pressing pressure _{^{(Z o pr) (t (}} X pr, th-)) when it reaches the (Z _{pr , th-} ) _compares the letter V (X (Z _{pr, th} -))-and the letter represented by the pressure reference pressure, -V (Z ^o _pr ) _-and if they are equal, V (Z ^o _pr ) In the case of different values, a correction method for inputting V (X (Z _{pr, th−} )) is a configuration of the present invention. In other words, since the input character becomes V (X (Z _{pr, th−} )) in any case, it is a configuration of the present invention to always input V (X (Z _{pr, th−} )). Accordingly, even in the pressure change process as shown in FIG. However, the concern is that the touch reference pressure is substantially lowered, and the touch pressure (Z _tch ) is increased by chance and reaches the pressing threshold pressure (Z _{pr, th} ). Even in this case, if the user does not actually intend to input, the touch pressure (Z _tch ) does not reach the pressing reference pressure (Z ^o _pr ) and the character is not input. Therefore, the setting of the pressing threshold pressure lowers the character input pressure and does not cause an error that the user inputs during the touch process. However, the setting of the pressing threshold pressure only brings the effect of increasing the accuracy of typing so that characters are input as the user intends. In addition to the configuration of the character input error correction method of the present invention, if a method of changing the brightness or the color of the background of the area representing the character representing the place where the pointer is located as the character input pointer moves on the virtual keyboard is provided. The user can easily recognize where the current pointer is located, make text input easier, and furthermore, if the background of the area corresponding to the input text changes to another color when the text input is executed, Make errors easier to recognize. The push threshold pressure introduced for the accuracy of the character input is used to perform another function. This is in connection with the function of the shift key on the keyboard. 32C- (B) show the pressure change according to the change in coordinates along the horizontal axis and the pressure change according to time in the virtual ideal pressing pressure change process. In particular, the pressure change with time changes shows the pressure change more accurately. The time when the character input actually occurs is not when the press pressure reaches the press standard pressure, but the press pressure is lower than the press reference pressure and the press threshold pressure is reached again. Is entered (X = X _{pr, th +} ). The reason for this is that the time of holding the pressure reference pressure, that is, the holding time (

_tpr = t (X _{pr, th +} ) -t (X _{pr, th-} ))

t ^o _pr ), if it is longer than that, it has the effect of pressing the shift of the keyboard. For example, as shown in FIG. 15B, in the case of an English letter, a function button needs to be additionally pressed in order to input uppercase and lowercase letters. By setting the reference time, it is possible to bring the same effect to the duration of the pressing pressure. Therefore, Z _{pr, th-} is the switch-on function and Z _{pr, th +} is the switch-off function. However, when the shift function according to the pressing duration is given as in this configuration, it is not necessary to press the function button to perform the effect of the shift key. However, if you need to use the second key set (capital letters), it is convenient to use the function button to activate the cap-lock function. Therefore, in the present invention, the function of the function button for maintaining the shift key is also outlined in (S) 1, (S) 2, (S) 3, (S) 4, and (S) 5 of the touch pad shown in FIG. , (S) 6) can be implemented by tapping the area. Therefore, if continuous use of the second key set is required, such as capital letters in English, the shift function is maintained by using the function button, and the shift function, which is sometimes used, such as an English letter that should be capitalized at the beginning of a sentence, is implemented by the sustaining pressure. It is the structure of this invention. The construction principle using the sustain of the pressing pressure is shown in Figs. 32C- (B) and 32D- (B). FIG. 32C- (B) shows an example of inputting the letter 'K'. FIG. 32D- (B) shows an example of inputting the 'K'. When the horizontal axis represents the X coordinate, the pressing operation of FIG. 32D is maintained for a longer time. It may be mistaken, but the important thing is that the time

t _pr ) Pressing time (

t ^o _pr ). Therefore, the push duration is rather longer in Fig. 32C. That is, the pressing reference time in FIGS. 32C- (B) and 32D- (B) (

t ^o _pr ) is shown as a dim area. In the case of Fig. 32C- (B), when the pressing time is longer than the reference time (

t _pr >

t ^o _pr ) and in case of 32d- (B), when the pressing time is shorter than the reference time (

t _pr <

t ^o _pr ) so that the former enters 'K' and the latter enters 'k', which is the representative character for the initial push threshold pressure (Z _{pr, th-} ). 33 is a flowchart showing the character correction process of this configuration. Although the above has described the character input switch function by the pressure of the touch pad, it can be applied to the case of executing the character input using the mechanical switch of FIGS. 5, 7 and 23b. That is, t (X _{pr, th-} ) and t (X _{pr, th +} ) shown in FIG. 32 correct input characters according to the same principle, corresponding to the operation time t _on and the end time t _off of these switches, respectively. If the character represented by the point at which the mechanical switch is activated- V (t _on ) _{-is the} same as the character represented by the end of the switch operation- V (t _off ), then V (t _off ) is not equal to V (t _off ). t _on ). In this way, even when using the mechanical input switch (Fig. 5, Fig. 7, Fig. 23b) can be applied to the input character correction method by the pressing pressure because the pressing pressure on the touch pad when operating these mechanical switches In general _, V (t _off ) and V (t (X _{pr, th-} )) are the same because the pressure threshold (t (X _{pr, th-} )) is faster than the switch operation time (t _on ). Enter V (t _off ), otherwise enter V (t (X _{pr, th-} )). This provides a user selectable option to achieve a situation that best suits the user's pressing pattern.

A=A_p-A_t)를 이용하여 계산하는 것이다. 하지만 이는 터치패드를 손가락으로부터 보호하는 절연체(3402)가 비탄성체인 경우(도 34(D))이고 만약 도 34(C)에 보여지는 것처럼 절연체가 탄성체인 경우는 손가락이 터치패드를 눌러 줄 때에 터치패드 위의 전극과 손가락의 거리가

d1만큼 짧아져서 아래의 정전용량 계산식에서 보는 바와 같이 면적의 변화만을 가져올 때보다 더 큰 정전용량의 변화를 가져오게 된다. An eleventh aspect of the present invention is to increase the difference between the pressing pressure and the touch pressure. In the case of the capacitive touch pad, the touch pad calculates the pressure by changing the area where the finger 3403 touches the touch pad when the finger presses the touch pad.

It is calculated using A = A _p -A _t ). However, this is when the insulator 3402 that protects the touchpad from fingers is inelastic (FIG. 34 (D)) and if the insulator is elastic, as shown in FIG. 34 (C), when the finger presses the touchpad The distance between the electrode and the finger on the pad

It is shortened by d1, resulting in a larger capacitance change than when only the area change is obtained, as shown in the capacitance calculation below.

C = eA / d (1)

Where C is the capacitance, e is the dielectric constant of the material filling the electrode with the proportional constant, A is the area of the electrode, and d is the distance between the electrodes.

As a result, the distance and the distance also affect the pressure calculation of the touch pad, so that the difference between the pressing pressure and the touch pressure becomes larger, and the character input method according to the pressure change becomes more accurate.

In the twelfth configuration of the present invention, instead of pressing the corresponding key on the virtual keyboard, the space used most frequently during character input and the backspace for error correction can be easily executed by only moving the left and right fingers as shown in FIG. That's how you do it. This method does not need to find a position corresponding to the letter key, it can be easily performed simply by moving the finger to the left and right. In addition, the right touchpad uses the left and right touchpads for the space, while the left touchpad takes the backspace for the left touchpad, and the position of the finger on the left and right touchpads naturally lies on the left side of the touchpad. In addition, the joint movement is also convenient to move left-> right-> left. However, it is not necessary to fix the space so that the right finger takes care of the back space and the left finger takes care of it. In other words, depending on whether the starting point is left or right with your right finger, you can have both space and back space run.

In summary, the above-described configuration of the present invention is intended to facilitate character input by using a pointing function, a push switch function, and a tapping function button function, which are basic functions of the touch pad. Initialization is required to maximize this, which is illustrated in FIG. The reason for this initialization process is as shown in the formula (1), because each user presses the touch pad in a different size, and the area of the finger varies depending on the direction in which the finger touches the touch pad. It is the second pressure input step, and finally, since the shape of the finger touching the touch pad is not a circle, correction for this is the input coordinate system setting step. In the input coordinate system setting step, press 'a, s, d, f, g, h, j, k, l,;' in order to set the X 'coordinate system in the character input mode and set the Y' coordinate system. To do this, press' edcik, 'in order. If necessary, you can set the X'-Y' coordinate system more accurately by pressing all keys. The second stage, the pressure input stage, can also proceed simultaneously with the last stage.

The present invention uses two touchpads to facilitate text input of portable electronic devices, especially mobile phones, bringing the effect of a built-in keyboard to operate with both hands, bringing the effect of embedding the keyboard with a pointing device, the true meaning in the mobile phone Allows to implement UI of. The mobile phone is no longer just a phone, but a new generation of fingertop computers, a step up from the palmtop computer, the PDA. This change means the emergence of digital devices that bring mobile phones to the computer at any time in response to the Ubiquitous era. In addition, the input device using the touch pad of the present invention can be used as a remote controller capable of inputting characters used in conventional TVs, VCRs, DVDs, as well as portable digital electronic devices. That is, not only a simple pointing device but also a function of a universal pointing device equipped with a function of a keyboard substantially enables the implementation of a graphical user interface (GUI) in an electronic device having a monitor. Ultimately, the input device of the present invention will be a true hand-in Ubiquitous input device that enables computerization of electronic devices and networking between all devices.

Claims (18)

Displacement of the finger using the touchpad (

X,

Touchpad pointing device using both the method of controlling the change of pointer position by Y) and the pointer control method of determining the position of the pointer by the position coordinates (X, Y) of the finger on the touchpad, and a mobile phone and an electronic device using the same. Portable small digital devices such as dictionaries and PDAs The touch pad input device of claim 1, wherein the push switch is disposed under the touch pad to perform a function of a command execution button. Input device to replace the function of the push switch by using the change in the pressure applied to the touch pad in claim 2 as a push switch An input device in which a separate switch is disposed in the horizontal corner of the rear side of the digital device to replace the push switch located under the touch pad in claim 2. Digital device having a virtual keyboard program for character input in claim 1 and having a virtual keyboard coordinate system of 1: 1 correspondence with touch pad coordinate system The touch pad input device of claim 5, wherein the touch pad input device has a reference point such as at least one or more small protrusions, grooves, or grating uneven surfaces that a finger can recognize on the touch pad surface and associates with a specific position of the virtual keyboard. The touchpad input device having a calibration program of a touchpad coordinate system for linking a reference point and a specific position of the virtual keyboard of claim 6 Portable small digital device having two touch pads as a pointing device in claim 1 In the digital device of claim 8, a virtual keyboard for character input is divided into left and right windows, and a character input pointer is disposed in each window, and these character input pointers are independently operated by a left and right touch pad. Character input error correction program using the push threshold pressure to correct the position of the finger from the target point when the push switch is operated in claim 2 Portable small digital device using a virtual keyboard having three columns Compact digital electronic device that enables operation with only one hand held in the state of holding with one hand in claim 1 In the case where the small electronic device of claim 12 is a mobile phone, the GUI system has a function of automatically releasing a virtual keypad on the screen to operate a telephone call function when the mobile phone is operated in a portrait view mode. In claim 3, in order to enlarge the size of the pressing pressure, the input device in which the change of capacitance is expanded by using the insulator of the touched portion of the touch pad as an elastic body. Portable small digital device using the function button function by tapping the function button of the touch pad in claim 1 The digital device of claim 5, wherein the virtual keyboard has three columns and has a non-linear correspondence in which the areas of the virtual keyboard coordinate system corresponding to each column and the touch pad coordinate system are not equal to each other. The method of claim 5, wherein the space and the backspace are replaced by left and right movements of the finger on the touch pad without using the keys of the virtual keyboard. Streamlined and wireless touch pad pointing device having a separate form from the portable small digital device of claim 1 is not integral

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