CN1241109C - Touch display method for controlling magnification according to pressure - Google Patents

Abstract

The invention provides a touch display method for controlling magnification according to pressure, which comprises the following steps: sensing the pressure and position of an external force applied to a display panel; (b) generating a corresponding pressure signal and a corresponding position signal according to the pressure and the position of the external force applied to the display panel; and (c) generating a corresponding magnification according to the pressure signal, and amplifying the image frame part corresponding to the position signal according to the magnification, wherein the image frame part corresponding to the position signal is amplified according to the magnification and displayed in a display frame, and other image frames positioned outside the display frame are kept unchanged. The invention can utilize the control pen or other touch devices to press the sensing surface so as to control the magnification factor or the magnification range of the display picture, and is more convenient to use.

Description

Touch display method that controls magnification according to pressure

technical field

The invention relates to a touch display, in particular to a touch display method in which the magnification can be controlled by pressure.

Background technique

In this era of information explosion, computer systems have become an indispensable technological product for modern people. Such as desktop computers, notebook computers, and even the newly popular personal digital assistants (PDAs), etc., it can almost be said that everyone has a machine. On the display of the computer system, the thickness is also required to be thinner and thinner, and the use is more and more convenient, so there is the advent of the touch display.

In touch displays, there are roughly two forms of existing magnification methods. Please refer to Figure 1A to Figure 1C. Fig. 1A is a schematic diagram of a picture 10 of an unenlarged display; Fig. 1B is a schematic diagram of a picture 20 of an enlarged display after using the first existing magnification method; Fig. 1C is a schematic diagram of a picture 30 of the enlarged display after using the second existing magnification method . The existing first magnification method shown in Fig. 1B is to magnify the graph in the upper left corner of Fig. 1A according to a predetermined magnification factor, and the user can use the horizontal scrolling axis 22 and vertical scrolling if he wants to view the graphs of other parts Axis 24 to move the picture. The second existing enlargement method shown in FIG. 1C is to enlarge the graph below the screen 32 in FIG. 1A according to a predetermined magnification factor and display it in the screen 32 . The user can move the position of the screen 32 to view different parts of FIG. 1A , which is like using a magnifying glass to view the detailed graphics in FIG. 1A .

In the above two existing magnification methods, since the magnification factor and the magnification range are fixed, users cannot easily adjust the magnification factor or range according to their own needs, so it is not very convenient to use.

Contents of the invention

The object of the present invention is to provide a touch display and a display method that can control the magnification by pressure, so as to solve the above problems.

The object of the present invention is achieved by providing a touch display method for controlling magnification according to pressure, which includes the following steps:

(a) sensing the pressure and position of an external force applied to a display panel;

(b) Generate corresponding pressure signals and position signals according to the pressure and position of the external force applied to the display panel; and

(c) Generate a corresponding magnification according to the pressure signal, and magnify the part of the image frame corresponding to the position signal according to the magnification, wherein the part of the image corresponding to the position signal is magnified according to the magnification It is enlarged and displayed in a display frame, while other image frames outside the display frame remain unchanged.

The advantage of the method of the present invention is that its touch display utilizes a control pen or other touch devices to press the sensing surface to control the magnification factor or magnification range of the display screen, which is a result that cannot be achieved in the prior art, and it is relatively easy to use. Convenience, which is beyond the reach of the prior art.

Description of drawings

FIG. 1A is a schematic diagram of an unmagnified display screen;

FIG. 1B is a schematic diagram of a picture of an enlarged display after using the first existing magnification method;

FIG. 1C is a schematic diagram of a picture of an enlarged display after using the second existing enlargement method;

2 is a schematic structural view of the touch display of the present invention;

FIG. 3 is a schematic diagram of an exploded structure of the touch display of the present invention shown in FIG. 2;

FIG. 4 is a schematic diagram of pressure measurement of the touch display of the present invention shown in FIG. 3 when touched;

Fig. 5 is a first relationship diagram between the pressure signal and the magnification factor on which the touch display of the present invention is based;

Fig. 6 is a second relationship diagram between the pressure signal and the magnification factor on which the touch display of the present invention is based;

FIG. 7A is a schematic diagram of an unmagnified display screen;

FIG. 7B is a schematic diagram of an enlarged screen of the touch display of the present invention when the pressure on the display is relatively small after the first magnification method;

FIG. 7C is a schematic diagram of an enlarged screen of the touch display of the present invention when the pressure on the display is relatively high after the first magnification method;

FIG. 8A is a schematic diagram of an unmagnified display screen;

FIG. 8B is a schematic diagram of the enlarged screen of the touch display of the present invention when the pressure on the display is relatively small after the second enlargement method;

FIG. 8C is a schematic diagram of an enlarged screen of the touch display of the present invention when the pressure on the display is relatively high after the second magnification method;

FIG. 9A is a schematic diagram of an unmagnified display screen;

FIG. 9B is a schematic diagram of an enlarged screen of the touch display of the present invention after the third magnification method, when the pressure on the display is relatively small;

FIG. 9C is a schematic diagram of an enlarged screen of the touch display of the present invention after the third enlargement method, when the display is subjected to a relatively large pressure.

Detailed ways

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of the touch display 100 of the present invention. The present invention provides a touch display 100 in which the magnification can be controlled by pressure. The touch display 100 includes a display panel 104 , a sensing surface 102 , a display controller 106 and a pressure detector 108 . The display panel 104 is used to display image frames. The sensing surface 102 and the pressure detector 108 form a touch sensor. The sensing surface 102 is used to sense the pressure and position of an external force applied to the sensing surface 102 and generate corresponding pressure signals and position signals. The display controller 106 is electrically connected to the display panel 104 and the touch sensor, and is used to control the image frame displayed on the display panel 104, and according to the position signal generated by the touch sensor, it will be compared with the position signal. The corresponding image frame part is enlarged according to a magnification ratio by a central processing unit (CPU) 112 and a memory 114 of a personal computer 110. The magnification ratio is a pressure signal generated by the touch sensor according to A predetermined conversion mode is determined.

Please refer to FIG. 3 . FIG. 3 is a schematic diagram of an exploded structure of the touch display 100 of the present invention shown in FIG. 2 . The transparent sensing plate 102 is fixed on the surface of the display panel 104 . The sensing board 102 includes a plurality of pressure-sensitive sensing units 128 , and each sensing unit 128 is located at a predetermined position of the display panel 104 for sensing the pressure of an external force. As shown in FIG. 4 , the external force is generated by lightly pressing a touch point 122 of the sensing board 102 along a direction A with a control pen 120 . The pressure detector 108 is electrically connected to the sensing board 102 for detecting the pressure and position of the external force sensed by the sensing board 102 and generating corresponding pressure signals and position signals.

The pressure sensing method of the touch display 100 of the present invention is that each sensing unit 128 includes a capacitor 129, and when the external force is applied to the sensing unit 128, the capacitance value of the capacitor 129 of the sensing unit 128 will generate Change, and the method of measuring the capacitance value of the capacitor 129 can be easily accomplished by those skilled in the art, so it will not be repeated here. Next, the pressure detector 108 generates the pressure signal by detecting the capacitance of the sensing unit 128 , and generates a corresponding position signal 124 through the position 122 of the sensing unit 128 .

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of pressure measurement of the touch display 100 of the present invention shown in FIG. 3 when touched. When the control pen 120 touches the touch point 122 of the sensing plate 102, due to the difference in pressure, the distance pressed by the control pen 120 is different. The original thickness of the sensing plate 102 is d, and the sensing plate 102 is A soft flexible film-like board, when the force of the control pen 120 is pressed down, the remaining thickness d of the sensing plate 102 is just smaller; on the contrary, when the force of the control pen 120 is pressed down, the sense The remaining thickness d of the test plate 102 is larger. The capacitance value of the capacitor 129 has the following relationship with the thickness d of the sensing plate 102:

Capacitance value = ∑A/d

The greater the current pressure, the smaller d, and the larger the capacitance.

Please refer to Figure 5 and Figure 6. FIG. 5 is a first relationship diagram of the pressure signal and the magnification on which the touch display 100 of the present invention is based. FIG. 6 is a second relationship diagram of the pressure signal and the magnification factor on which the touch display 100 of the present invention is based. As shown in FIG. 5 , the display controller 106 of the touch display 100 converts the pressure signal generated by the touch display into the magnification according to a linear conversion mode. When the pressure signal f is less than a certain pressure level, the magnification factor Zi remains unchanged without any amplification action; when the pressure signal f is greater than a certain pressure level, the magnification factor Zi will have a linear relationship with the pressure signal f, As the pressure signal f becomes larger or smaller, the magnification Zi will increase or decrease. However, this linear relationship may be due to the fact that when the user uses the control pen to press the sensing board 102 of the touch display 100, the pressure signal f becomes larger or smaller due to the slight movement of the user, so the magnification factor Zi also increases or decreases. It will fluctuate accordingly, and there may be some changes in use.

As shown in FIG. 6 , the display controller 106 of the touch display 100 converts the pressure signal generated by the touch sensor into the amplification factor according to a stepwise conversion mode. The staged switching mode includes multiple pressure intervals, such as f1-f2, f2-f3, f3-f4, f4-f5, f5-f6 and so on. Each pressure range has a corresponding fixed magnification, such as f1-f2 is Z1, f2-f3 is Z2, f3-f4 is Z3, f4-f5 is Z4, f5-f6 is Z5 and so on. When a pressure signal falls into a pressure interval among the plurality of pressure intervals, the pressure signal set is converted into a fixed amplification ratio corresponding to the pressure interval.

Please refer to FIG. 7A to FIG. 7C. FIG. 7A is a schematic diagram of an unmagnified display screen 130; FIG. 7B is a schematic diagram of an enlarged screen 140 when the touch display 100 of the present invention is subjected to a small pressure after the first zoom-in method; FIG. 7C is a schematic diagram of an enlarged image 150 of the touch display 100 of the present invention when the pressure on the display 100 is relatively high after the first enlargement method. The display controller 106 of the touch display 100 of the present invention will use a full-frame zoom-in/zoom-out (zoomin/zoom out) mode to make the part of the image frame corresponding to the position signal generated by the touch sensor according to The magnification scales up and down the full screen. As shown in FIG. 7B , when the pressure of the control pen 120 pressing the sensing plate 102 is small, the touch point 122 on the sensing plate 102 along the control pen 120 will be enlarged 140 with a smaller magnification in full screen; As shown in FIG. 8B , when the pressure of the control pen 120 pressing the sensing plate 102 is relatively high, the touch point 122 on the sensing plate 102 along the control pen 120 will be zoomed in at a larger magnification by 150 degrees. .

Please refer to FIG. 8A to FIG. 8C . Fig. 8A is a schematic diagram of the picture 130 of the unenlarged display; Fig. 8B is a schematic diagram of the enlarged picture 160 of the touch display 100 of the present invention after the second magnification method, when the pressure on the display is small; Fig. 8C is a schematic diagram of the touch display of the present invention After the display 100 undergoes the second magnification method, a schematic diagram of the magnified image 170 when the display is subjected to a relatively large pressure. The display controller 106 of the touch display 100 of the present invention will enlarge the part of the image frame corresponding to the position signal generated by the touch sensor according to the pattern of a fixed display frame (fixed displaying frame) 162, 172. The ratio is enlarged and displayed in the fixed display frame 162, 172, while other image frames 160, 170 outside the fixed display frame 162, 172 remain unchanged. As shown in FIG. 8A , arrow F indicates the position where the control pen 120 presses the sensing board 102 . As shown in FIG. 8B , when the pressure of the control pen 120 pressing the sensing board 102 is small, the fixed display frame 162 that expands outward along the touch point 122 of the control pen 120 on the sensing board 102 will form a relatively small A small magnification magnifies the content at the touch point 122; as shown in FIG. The fixed display frame 172 expanding outward from the point 122 magnifies the content at the touched point 122 with a larger magnification. In addition, in this embodiment, the fixed display frame is located at the position of the image frame corresponding to the position signal. For the convenience of viewing by the user, the fixed display frame can also be located at a fixed position of the display 100, regardless of the sensory Wherever the touch point 122 on the measuring board 102 is located, the enlarged content is displayed in a fixed display frame at the fixed position.

Please refer to Figures 9A to 9C. FIG. 9A is a schematic diagram of an image 130 of an unmagnified display; FIG. 9B is a schematic diagram of an enlarged image 180 of the touch display 100 of the present invention after the touch display 100 undergoes a third magnification method, when the pressure on the display is small. FIG. 9C is a schematic diagram of an enlarged image 190 of the touch display 100 of the present invention when the touch display 100 undergoes a third enlargement method when the display is subjected to relatively high pressure. The display controller 106 of the touch display 100 of the present invention will, according to the mode of a partial display frame (partial displaying frame) 182, 192, change the image frame portion corresponding to the position signal generated by the touch display according to a predetermined The magnification of the partial display frame 182, 192 is enlarged and displayed in the partial display frame 182, 192, and the size of the partial display frame 182, 192 is determined by the magnification ratio, while other image frames 180, 190 outside the partial display frame 182, 192 remain constant. As shown in FIG. 9A , an arrow F' indicates a position where the control pen 120 presses the sensing board 102 . As shown in FIG. 9B , when the pressure of the control pen 120 on the sensing board 102 is small, a smaller partial display frame 182 will expand outward along the touch point 122 of the control pen 120 on the sensing board 102 , Enlarge the content at the touch point 122 with a fixed magnification; as shown in FIG. 9C , when the pressure of the control pen 120 pressing the sensing plate 102 is relatively high, it will move along the control pen 120 on the sensing plate 102 The larger partial display frame 182 expanding outward from the touch point 122 magnifies the content at the touch point 122 with a fixed magnification.

Compared with the prior art, the touch display of the present invention utilizes the pressure of the control pen 120 or other touch devices to press the sensing plate 102 to control the magnification or magnification range of the display screen, which is a result that cannot be achieved by the prior art , can bring users a lot of convenience.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the scope of the claims of the present invention shall fall within the scope of the patent of the present invention.

Claims (8)

1. control the touch-type display packing of enlargement ratio according to pressure for one kind, it includes the following step:

(a) sensing one external force puts on the pressure size and location of a display panel;

(b) the pressure size and location that put on this display panel according to this external force produce corresponding pressure signal and position signalling; And

(c) produce a corresponding magnification according to pressure signal, and will be amplified according to this magnification with the corresponding image frame part of this position signalling, wherein amplified and be shown in the display box according to this magnification, and other image frame that is positioned at outside this display box remains unchanged with the corresponding image of this position signalling.

2. touch-type display packing as claimed in claim 1, wherein step (b) produces this pressure signal for the capacitance variation according to a sensing cell, and produces this position signalling according to the position at this sensing cell place.

3. touch-type display packing as claimed in claim 1, the pattern of step (c) for amplifying and dwindle according to a full frame wherein will give full frame according to this magnification with the corresponding image frame part of this position signalling and amplify and dwindle.

4. touch-type display packing as claimed in claim 1, wherein step (c) is the fixedly pattern of display box of foundation one, to be amplified and be shown in this according to this magnification with the corresponding image frame of this position signalling part fixedly in the display box, be positioned at this fixedly display box other image frame outward then remain unchanged.

5. touch-type display packing as claimed in claim 4, wherein should be fixedly display box be positioned at the position of the corresponding image frame of this position signalling.

6. touch-type display packing as claimed in claim 1, wherein step (c) is the pattern according to a local repressentation frame, to be amplified according to an enlargement factor of being scheduled to the corresponding image frame part of this position signalling and be shown in this local repressentation frame, the size of this local repressentation frame then is to be decided by this magnification, is positioned at other outer image frame of this local repressentation frame and then remains unchanged.

7. touch-type display packing as claimed in claim 1, wherein step (c) is for converting this pressure signal to this magnification according to a linear transformation pattern.

8. touch-type display packing as claimed in claim 1, wherein step (c) is for converting this pressure signal to this magnification according to an interim translative mode, this stage translative mode includes between a plurality of pressure zones, and be equipped with a corresponding fixed power between each pressure zone, when a pressure signal falls between a pressure zone between these a plurality of pressure zones, this pressure signal promptly can be converted into and this pressure zone between corresponding fixed power.

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