TWI399686B - Resistive touch controlling system and sensing method - Google Patents

Description

Resistive touch control system and sensing method

The present invention relates to a resistive touch system, and more particularly to a resistive touch control system and sensing method for partitionable scanning.

Resistive touch screen can be said to be the most used touch technology at present. The driving principle is to calculate the coordinates by means of voltage drop, that is, to apply a voltage on each of the X axis and the Y axis to drive. When the resistive touch screen is touched, a voltage drop occurs because the loop is turned on, and the controller calculates the ratio of the voltage drop and then further calculates the coordinate axis.

When the resistive touch screen is touched, the coordinates of the touch point are determined based on the intersection of the X-axis and the Y-axis that generate the pressure drop. Furthermore, when scanning all the X axes, only a scan result of the pressure drop of one X axis can be obtained; similarly, when scanning all the Y axes, only a scan of the pressure drop of the Y axis can be obtained. result. Therefore, if you want to determine the coordinates of the touch point, you need to combine the two scan results obtained by scanning the X axis and scanning the Y axis respectively.

However, although this method does not cause a misjudgment when a single touch is applied, it is not suitable for a multi-touch operating environment. Taking two touch points as an example, when the coordinates of the actual touch point are (X ₁ , Y ₂ ) and (X ₂ , Y ₁ ), X ₁ will be found when scanning the scan result obtained by scanning the X axis. The axis and the X ₂ axis produce a pressure drop, and when examining the scan results obtained by scanning the Y axis, a pressure drop is produced between the Y ₁ axis and the Y ₂ axis. The touch coordinates calculated based on the results of the two scans will include (X ₁ , Y ₁ ), (X ₂ , Y ₂ ), (X ₂ , Y ₁ ) and (X ₁ , Y ₂ ). Among them, only (X ₁ , Y ₂ ) and (X ₂ , Y ₁ ) are the coordinates of the actual touch point, and (X ₁ , Y ₁ ) and (X ₂ , Y ₂ ) are commonly known as ghost points, not Actual touch point. Therefore, in the resistive touch control system, there must be an appropriate way to eliminate the existence of ghost points, so as to avoid confusion when determining the coordinates of the touch point, and the coordinate determination fails.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a resistive touch control system that can accurately determine the coordinates of an actual touch point by eliminating ghost points.

The invention provides a resistive touch control system comprising first and second sensing modules and processing circuitry. The first sensing module has a plurality of sensing line groups, and the processing circuit is electrically coupled to the two sensing modules, and is sensed when the first sensing module senses at least two touch points. The combination of touch points is the first candidate list. After obtaining the first candidate list, the processing circuit closes part of the sensing line group, and the touch point sensed by the second sensing module at this time is the second candidate list; finally, by comparing the first candidate The list and the second candidate list determine the current touch sensing results. It should be noted that some of the sensing line groups mentioned herein include a sensing line group in which one of the first sensing modules is sensed, and a plurality of sensing line groups in the vicinity of the sensing line group.

In an embodiment of the present invention, the foregoing processing circuit discards the first candidate list when one touch point in the second candidate list and all touch points in the first candidate list exceed a certain predetermined distance. And the second candidate list, and the current touch sensing result is generated according to the previous touch sensing result. Conversely, when a touch point in the second candidate list does not exceed the predetermined distance in the first candidate list, the processing circuit is based on the touch point and the first candidate in the second candidate list. The touch points in the list calculate the position of the two objects.

In an embodiment of the present invention, when a plurality of touch sensing results show that the two objects touched are in a sliding state, the processing circuit determines whether the linear distance between the two objects is less than a minimum distance critical value. value. When the linear distance is less than the minimum distance threshold, the processing circuit calculates the position of the latest two objects according to the sensing line group voltage division condition obtained by scanning the first sensing module and the second sensing module. Wherein, calculating the position of the latest two objects can be obtained by performing a proportional operation using the voltage distribution state of the sensing line group.

In another embodiment of the present invention, when a plurality of touch sensing results show that the two objects touched are in a sliding state, the processing circuit determines whether the slope of the connection between the two objects is less than one. Preset change value. When the slope change amount is less than the preset change value, the processing circuit further determines whether the linear distance between the two objects is increasing or decreasing. Once the linear distance between the two objects is increasing, the processing circuit causes the resistive touch control system to perform an amplification operation; conversely, if the linear distance between the two objects is decreasing, the processing circuit makes the resistive touch control The system performs a zoom out operation.

In another embodiment of the present invention, when a plurality of touch sensing results show that both of the touched objects are in a sliding state, the processing circuit determines a straight line between the two objects and a predetermined axis. Whether the angle between them is greater than a preset angle. If the angle is greater than the preset angle, the processing circuit causes the resistive touch control system to perform an image rotation operation.

The invention further provides a resistive touch control system, the resistive touch control system comprising a touch panel, a first sensing module and a processing circuit. The first sensing module includes a plurality of sensing line groups, and each of the sensing line groups corresponds to a first sensing area on the touch panel. The processing circuit is electrically coupled to the first sensing module to scan the sensing line groups one by one. The two sensing line groups that are scanned one after another are not adjacent to each other, and after the X-th sensing line group is scanned and the object is touched, the sensing lines of the first and second sensing line groups are performed. Scan one by one to thereby confirm which of the first sensing regions the object is located in.

The invention also provides a resistive touch sensing method suitable for use in a resistive touch control system having a first sensing module and a touch panel. The first sensing module includes a plurality of sensing line groups, and each sensing line group corresponds to a piece of first sensing area on the touch panel. The resistive touch sensing method first scans the aforementioned sensing line groups one by one, and the two sensing line groups that are successively scanned are not adjacent to each other. After scanning one of the X sensing line groups of the first sensing module and sensing that the object is touched, the first and second sensing line groups of the X sensing line group are scanned one by one to confirm that the object is located first. Sensing area.

The invention closes a part of the scan line group associated with at least one of the touch points when scanning the multi-touch information, and performs a second scan at this time and compares the scan results, so that the scan can be created in a very short period of time. A single touch environment, and based on this, the actual touch point is not affected by ghost points. In addition, the non-adjacent scan line scan mode used in some embodiments of the present invention can also speed up the detection of touch points and reduce the time required for the overall scan.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Please refer to FIG. 1, which is a circuit block diagram of a resistive touch control system according to an embodiment of the invention. The resistive touch control system 10 includes a touch panel 100 , a first sensing module 110 , a second sensing module 120 , and a processing circuit 130 .

The touch panel 100 is not a necessary component of the resistive touch control system 10; in other words, the resistive touch control system 10 itself may only include the first sensing module 110 and the second sensing module. The 120 and processing circuit 130 and the like generate a touch sensing signal and a circuit for processing the sensing signals.

In the embodiment shown in FIG. 1 , the first sensing module 110 and the second sensing module 120 include a plurality of sensing line groups, such as sensing line groups 112 , 116 , 122 , and 126 . Each sense line group (such as sense line group 112, 116, 122 or 126) includes a switch (such as switch 112a, 116a, 122a or 126a) and a capacitor line (such as capacitor line 112c, 116c, 122c or 126c). a ground line (such as ground line 112g, 116g, 122g or 126g) and an input potential line (such as input potential line 112v, 116v, 122v or 126v). The capacitor line is further electrically coupled to a capacitor, the ground line is further electrically coupled to the ground potential, and the input potential line is further electrically coupled to the input potential V _DD . The processing circuit 130 is electrically coupled to the first sensing module 110 and the second sensing module 120 through the lines 112x, 116x, 122y, and 126y, and is obtained according to the lines 112x, 116x, 122y, and 126y. The potential is used to determine if an object touches the corresponding sense line set 112, 116, 122 or 126.

Generally, before scanning whether the object touches the touch panel 100, each sensing line group in the first sensing module 110 is electrically coupled to the input potential V _DD , and the second sensing module is Each of the sensing line groups in 120 is electrically coupled to a ground potential. When the first sensing module 110 is scanned, the sensing line groups (112, 116) are electrically coupled to the corresponding capacitance lines (112c, 116c) one by one, and the sensing lines in the second sensing module 120. The group maintains a state of being electrically coupled to the ground potential. At this time, the processing circuit 130 can detect the potential change of the corresponding sensing line group 112 by the line 112x, and determine whether the object touches the touch panel 100 corresponding to the sensing line group 112 according to the detected potential change. Sensing area 112b. Similarly, the processing circuit 130 can detect the potential change of the corresponding sensing line group 116 by the line 116x, and determine whether the object touches the sensing line group on the touch panel 100 according to the detected potential change. Sensing area 116b of 116.

Similarly, when the second sensing module 120 is scanned, the operation mode is the same as the above operation mode, and the related content is not repeated here.

2A and 2B, which are schematic diagrams of sensing line group settings according to an embodiment of the invention. As shown in FIG. 2A, the sensing line groups 200-224 are arranged in a horizontal direction and extend in a vertical direction into the touch panel 270; similarly, as shown in FIG. 2B, the sensing line groups 230-254 are arranged in a vertical direction. And extending into the touch panel 270 in a horizontal direction. Each of the sensing line groups corresponds to a sensing area (not shown) on the touch panel 270 as shown in FIG. 1 . When scanning a set of sense lines arranged in a certain direction, the potentials on these sense line sets must be sensed one by one. However, the order in which the sense line sets are scanned may vary. For example, when the sensing line groups 200 to 224 arranged in the horizontal direction are to be scanned, the scanning is generally performed in a sequential manner, that is, the sensing line group 200 is scanned first, and then the sensing line group 202 is scanned. The sense line set 204...the sense line set 210, the sense line set 212, the sense line set 214...the sense line set 220, the sense line set 222 to the sense line set 224. Alternatively, a jump scanning method may be used, such as scanning the sensing line group 202 first, then scanning the sensing line group 212, and then scanning the sensing line group 222; once the object sensing group is found to be in contact with one of the sensing line groups (eg, the sensing line group 212) The voltage of the change is further changed), and the sensing line group near the sensing line group (such as the sensing line groups 210 and 214, etc.) is further scanned to confirm the sensing area where the object is located according to the detected voltage peak. Similarly, when the sensing line groups 230 to 254 arranged in the vertical direction are to be scanned, any of the above methods can also be used.

Please refer to FIG. 3, which is a flowchart of a resistive touch sensing method according to an embodiment of the invention. In this embodiment, first, the sensing line groups 200 to 224 or 230 to 254 are scanned one by one by any of the foregoing methods (step S300), and it is determined whether at least two touch points are present after the scanning is completed ( Step S302). If only one touch point exists, the single touch control is performed according to a general operation method (step S320); but if at least two touch points are sensed, the processing circuit 260 detects that there is a touch. The positions of the sense line groups of points are combined to generate a first candidate list of position coordinates having a plurality of touch points (step S304).

After the first candidate list is generated, the processing circuit 260 turns off the sensing function of a part of the sensing line group in the sensing module in a certain direction, and performs scanning again in this state (step S306). Specifically, if it is sensed by the sensing line groups 200-224 shown in FIG. 2A that an object touch point is generated on each of the sensing line group 202 and the sensing line group 222, the processing circuit 260 can select one of them. The sensing line group is turned off, and it is also possible to select a plurality of sensing line groups associated with one of the object touch points to be turned off, or even to select most of the sensing line groups to be turned off, and then to perform a second scanning. In other words, in the above situation, the processing circuit 260 may select to turn off only the sensing line group 202 (that is, where the voltage peak is located), or a plurality of sensing line groups near the sensing line group 202 that generate voltage changes, or The sensing line groups 200-212 of the right half are turned off, and even the sensing function of the sensing line group 222 is retained, and the sensing functions of all other sensing line groups are turned off. The scanning performed again after the operation of turning off the sensing line group described above may exclude a part of the touch points in the first candidate list, and the touch points obtained through the scanning are included in the second candidate list. It is used in subsequent processing (step S308).

In order to achieve the purpose of turning off the sensing function of certain sensing line groups, the present embodiment uses the architecture shown in FIG. 1 for processing. Referring to FIG. 1 together, when the sensing function of the sensing line group 112 is to be turned off, the switch 112a can be switched to the same potential as the potentials connected to the switches 122a and 126a. For example, generally, when performing normal sensing, the switches 112a and 116a are respectively connected to the input potential lines 112v and 116v, and the switches 122a and 126a are respectively connected to the ground lines 122g and 126g; therefore, the sensing line group is to be turned off. When the sensing function of 112 is enabled, the switch 112a can be connected to the ground line 112g, so that the sensing function of the sensing line group 112 can be turned off.

2A to 2B and FIG. 3, after generating the second candidate list via step S308, the processing circuit 260 confirms whether the two candidate lists match by comparing the contents of the first candidate list and the second candidate list ( Step S310). If the two match, the touch point coordinates are calculated according to the first and second candidate lists (step S312); otherwise, if the two do not match, there are several ways: one way is to directly discard the first and second candidates The touch sensing result of the previous output is generated by the list to generate the touch sensing result (step S314); the other method is to perform the third scanning, and the sensing result obtained by the third scanning is respectively The coordinates of the touch points in the first and second candidate lists are calculated, and the sum of the coordinate movements of the group of pictures is minimized according to the calculation result, and the two pictures with the smallest sum of coordinate movements are defined as continuous pictures. . That is, the two determined pictures are defined as reasonable moving results.

In a still further embodiment, after the touch point coordinates are calculated according to the first and second candidate lists in step S312, the touch point coordinates (or the current touch sensing result) are also The one-time touch sensing result is compared, and it is confirmed whether the distance between the corresponding touch points in the two touch sensing results is greater than a certain predetermined distance (step S315). If the distance between the two is not greater than the predetermined distance, the touch point coordinates calculated in step S312 are output as the current touch sensing result (step S316); otherwise, if the distance between the two is greater than this The predetermined distance is used as the current touch sensing result (step S317).

It should be noted that the matching of the candidate list here does not mean that there must be the same touch point in the two candidate lists, but whether it is within the preset distance near the touch point of the first candidate list. Touch points are included in the second candidate list. For example, the sliding of a general object has its regularity. Therefore, as long as the interval between scans is adjusted under the condition of moving the object, the moving distance of most objects between the two scans is smaller than the aforementioned pre-preparation. Set the distance. However, assuming that the object is being lifted, dropped again, or moved to the portion where the sense line is closed between the first scan and the second scan, then there will be a change between the first and second candidate lists. Too large to determine the correct touch point coordinates.

In another embodiment, when the distance between the front and rear picture coordinates is too large, the coordinate weight of the touch point defined in the rear picture is smaller than the coordinate weight of the touch point in the front picture; and the distance between the front and rear picture coordinates Very small, the coordinate weight of the touch point defined in the rear picture is larger than the coordinate weight of the touch point in the previous picture. Alternatively, the weighting manner may be changed for a trajectory curve that is approximately 45 degrees or moved along a diagonal direction of the screen, that is, a weight given to the recorded history coordinates of the previous several times is given, and the current coordinate position is given. Lower weights, thereby maintaining a more gradual curve and suppressing the generation of wavy trajectories.

Please refer to FIG. 2A, FIG. 2B and FIG. 4 at the same time. 4 is a flow chart showing the execution steps when determining whether the first and second candidate lists match according to an embodiment of the invention. In this embodiment, after the second candidate list is generated from step S308, one touch point is selected from each of the first and second candidate lists (steps S400 and S402). Next, the processing circuit 260 in the foregoing FIGS. 2A and 2B calculates the distance between the two touch points selected from the first and second candidate lists, and determines whether the two touch points have exceeded The preset distance is set (step S404).

If the result of the determination made in step S404 is YES, the flow proceeds to step S406. In step S406, the processing circuit 260 determines whether all touch points in the first candidate list have been selected and distance calculations have been performed from the currently selected touch points in the second candidate list. If the result of the determination in step S406 is no, then another touch point is selected from the first candidate list (step S408), and the additionally selected touch point and the currently selected touch in the second candidate list are selected. The point is subjected to a distance calculation (step S404). On the contrary, if the result of the determination in step S406 is YES, it means that there is one (any one) touch point in the second candidate list and all the touch points in the first candidate list exceed the aforementioned predetermined distance. Therefore, the process proceeds to step S314 to discard the first and second candidate lists, and the current touch sensing result is generated according to the previous touch sensing result. It should be noted that the step S406 proceeds to step S314 here only to cooperate with the embodiment shown in FIG. 3, and those skilled in the art may know that step S314 may also be another method, such as the foregoing another method juxtaposed with step S314. The practice of touching the resulting results or other touch results.

If the result of the determination in step S404 is NO, the flow proceeds to step S410. In step S410, the processing circuit 260 determines whether all of the touch points in the second candidate list have been selected and the distance from the touch points in the first candidate list. If the result of the determination in step S410 is no, then another touch point is selected from the second candidate list (step S412), and the additionally selected touch point is re-established with the touch point in the first candidate list. The distance calculation is performed (step S404). On the contrary, if the result of the determination in step S410 is YES, it means that there is no more than the predetermined distance between each touch point in the second candidate list and any one of the touch points in the first candidate list. The flow proceeds to step S312 to calculate the positions of the two objects based on the touch points in the first and second candidate lists.

It should be noted that, in steps S400 to S412 shown in FIG. 4, if the first and second candidate lists are mutually adjusted, the resistive touch control system can be operated normally.

In addition to the above sensing methods, the resistive touch control system provided by the present invention has other positioning and operation methods. Please refer to FIG. 5, which is a flow chart of another method for positioning and operating according to an embodiment of the invention. As shown in FIG. 5, after successive touch sensing, the touch sensing result generated according to the foregoing or other manners shows that both objects of the touch resistive touch control system are in a sliding state. At the time (step S500), the resistive touch control system (or the aforementioned processing circuit included in the resistive touch control system) further selects various positions defined by steps S502, S512 and S522 and subsequent steps, respectively. Method of operation.

When both objects are in a sliding state, the resistive touch control system can further determine whether the linear distance between the two objects is less than a set minimum distance threshold (step S502). If the linear distance between the two objects is not less than the set minimum distance threshold, it means that the interval between the two objects is enough to make the two touch points clearly distinguishable, so the general positioning method can be used to locate the touch point. The coordinates (step S506). If the linear distance between the two objects is less than the set minimum distance threshold, it means that the two objects are too close together, which may make the two touch points not clearly distinguishable, so this time will be based on several consecutive times. The position of the sensing line group voltage obtained at the time of scanning is used to calculate the position of the object (step S504).

Specifically, when the two objects approach each other due to sliding, the detected line voltages will be visible, and the positions of the two peak voltages will gradually approach each other and eventually become a peak voltage (also That is, the distance between the two objects is too close to make it impossible to distinguish). At this time, a proportional operation on the voltage distribution of the sense line group can be used to calculate the latest object position. The so-called proportional operation is to use the information of the two peak voltages before the combination, according to the relationship between the peak voltage and the area of the two peak voltages in the last data before the combination, and then according to the ratio The peak voltage of two is re-opened. For example, if the area of the peak voltage on the left side and the peak voltage area on the right side are 10:1, the left side 10/11 of the combined peak voltage is set as the new left peak voltage, and the 1/11 part of the right side is set to New right peak voltage. The center of the touch point can also be judged according to the calculated ratio. For example, in the above embodiment, the 10/11 left portion of the combined peak voltage can be recalculated to the center of gravity or the center. Obtain a new left peak voltage position, and the combined 1/11 portion of the peak voltage recalculates the center of gravity or center to obtain a new right peak voltage position, and finally with the new left peak voltage position and the new right peak voltage. The position is the coordinates of the two touch points.

Referring to FIG. 5, when the two objects are in the sliding state, the resistive touch control system can further determine whether the amount of change in the linear slope of the connection of the two objects is less than the set preset change value (step S512). ). If the change amount of the linear slope is not less than the preset change value, the resistive touch control system performs a general functional operation (step S530); but if the change amount of the linear slope is less than the preset change value, the resistive touch control system It is also judged that the linear distance between the two objects is incremented or decremented (step S514). If the result of the judgment shows that the linear distance between the two objects is increasing, the resistive touch control system performs the function of the zooming operation (step S516); conversely, if the judgment result shows that the straight line distance between the two objects is Decrement, then the resistive touch control system performs the function of the zoom-out operation (step S518).

Figure 5 also shows that when both objects are in a sliding state, the resistive touch control system can further determine whether the angle between the line connecting the two objects and a certain preset axis is greater than the set preset angle. (Step S522). If the judgment result shows that the aforementioned angle is not greater than the set preset angle, the resistive touch control system performs a general functional operation (step S530); but if the judgment result indicates that the aforementioned angle is greater than the set preset angle Then, the resistive touch control system performs a function of the image rotation operation (step S524).

It should be noted that the preset axis mentioned in step S522 may be the horizontal axis H or the vertical axis V as shown in FIGS. 2A and 2B, or may be any predetermined axial direction. Furthermore, in another embodiment, when the sensing line group is scanned to obtain the sensing voltage value, if a certain peak voltage is sensed to be less than a certain magnification of the maximum peak voltage, then the smaller voltage is defined. To interfere with the signal and ignore this small voltage change. In addition, when the number of touch points of the current picture is smaller than the number of touch points of the previous picture, the previous picture data may be reserved first, and the number of touch points of the subsequent multiple pictures is smaller than the number of touch points of the previous picture. Only the previous picture data is discarded and the latest picture data is output.

In summary, in the resistive touch control system and method provided by the present invention, it is possible to more accurately determine the coordinates of the touch point by confirming whether the scan results are consistent before and after, and reduce the probability of the coordinate determination failure.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

10. . . Resistive touch control system

100, 270. . . Touch panel

110. . . First sensing module

112, 116, 122, 126, 200 to 224, 230 to 254. . . Sensing line group

112a, 116a, 122a, 126a. . . Switcher

112b, 116b. . . Sensing area

112c, 116c, 122c, 126c. . . Capacitor line

112g, 116g, 122g, 126g. . . Ground wire

112v, 116v, 122v, 126v. . . Input potential line

112x, 116x, 122y, 126y. . . line

120. . . Second sensing module

130, 260. . . Processing circuit

S300～S320. . . Implementation steps of an embodiment of the present invention

S400～S412. . . Implementation steps of an embodiment of the present invention

S500～S530. . . Implementation steps of an embodiment of the present invention

V _DD . . . Input potential

1 is a circuit block diagram of a resistive touch control system in accordance with an embodiment of the present invention.

2A and 2B are schematic diagrams showing the setting of a sensing line group according to an embodiment of the invention.

3 is a flow chart of a resistive touch sensing method in accordance with an embodiment of the present invention.

4 is a flow chart showing the execution steps when determining whether the first and second candidate lists match in accordance with an embodiment of the present invention.

FIG. 5 is a flow chart of another method of positioning and operating according to an embodiment of the invention.

S300～S320. . . Implementation steps of an embodiment of the present invention

Claims (23)

A resistive touch control system includes: a first sensing module having a plurality of sensing line groups; a second sensing module; and a processing circuit electrically coupled to the first sensing module And the second sensing module, and when the at least one first object and the second object touch the resistive touch control system to cause the first sensing module to sense at least two touch points, Combining the sensed touch points as a first candidate list, and then turning off the sensing line groups in the portion of the first sensing module that senses one of the touch points, and The touch point sensed by the first sensing module and the second sensing module is a second candidate list, and finally the first candidate list and the second candidate list are determined to determine the current time. Touch sensing results. The resistive touch control system of claim 1, wherein the processing circuit has more than one of the touch points in the second candidate list and the touch points in the first candidate list. When the distance is predetermined, the first candidate list and the second candidate list are discarded. The resistive touch control system of claim 2, wherein the first candidate list and the second candidate list are discarded, and the current touch is generated according to the previous touch sensing result. Sensing results. The resistive touch control system of claim 2, wherein the processing circuit does not exceed any of the touch points in the second candidate list and the touch point in the first candidate list. When the distance is predetermined, the positions of the two objects are calculated according to the touch points in the second candidate list and the touch points in the first candidate list. For example, in the resistive touch control system described in claim 1, when the plurality of touch sensing results show that the two objects are in a sliding state, the processing circuit determines a straight line between the two objects. Whether the distance is less than a minimum distance threshold. The resistive touch control system of claim 5, wherein the processing circuit scans the first sensing module and the second sensing mode when the linear distance is less than the minimum distance threshold One of the group obtained senses the line group voltage distribution to calculate the latest position of the two objects. The resistive touch control system of claim 6, wherein the processing circuit performs a proportional operation on the sense line group voltage distribution to calculate the latest positions of the two objects. For example, in the resistive touch control system described in claim 1, when the two consecutive touch sensing results show that the two objects are in a sliding state, the processing circuit determines the straight line between the two objects. Whether the amount of change in slope is less than a predetermined change value. The resistive touch control system of claim 8, wherein the processing circuit further determines that the two objects are between when the processing circuit determines that the slope change amount is less than the preset change value. Whether the linear distance is increasing or decreasing. The resistive touch control system of claim 9, wherein the processing circuit causes the resistive touch control system to perform an amplification operation when a linear distance between the two objects is increasing. The resistive touch control system of claim 9, wherein the processing circuit causes the resistive touch control system to perform a zoom-out operation when a linear distance between the two objects is decreasing. For example, in the resistive touch control system described in claim 1, when the two consecutive touch sensing results show that the two objects are in a sliding state, the processing circuit determines the straight line between the two objects. Whether an angle with a predetermined axis is greater than a predetermined angle. The resistive touch control system of claim 12, wherein the processing circuit causes the resistive touch control system to perform an image rotation operation when the angle is greater than the predetermined angle. The resistive touch control system of claim 12, wherein the preset axis is a horizontal axis or a vertical axis. The resistive touch control system of claim 1, wherein the processing circuit selects a combination of the touch points from the first candidate list as the current touch according to the second candidate list. Touch the sensing result. The resistive touch control system of claim 1, wherein the processing circuit further compares the current touch sensing result with the previous touch sensing result, and finds two touches in the comparison. When the touch sensing result exceeds a predetermined distance, the previous touch sensing result is the current touch sensing result. A resistive touch sensing method is applicable to a resistive touch control system having a first sensing module and a touch panel, the first sensing module includes a plurality of sensing line groups, and the Each of the sensing line groups of the first sensing module corresponds to a first sensing area on the touch panel, and the resistive touch sensing method comprises: scanning the first sensing module one by one The sensing line groups, wherein the two sensing line groups of the first sensing module that are scanned one after another are not adjacent to each other; and when scanning an Xth sensing line group of the first sensing module After detecting that the object is touched, the plurality of sensing line groups before and after the X-th sensing line group are scanned one by one to confirm the first sensing area where the object is located. The resistive touch sensing method of claim 17, wherein the resistive touch control system further comprises a second sensing module having a plurality of sensing line groups, and the second sensing module Each of the sensing line groups in the group corresponds to The second touch sensing area of the touch panel further includes: after confirming the first sensing area where the object is located, using the second sensing module to confirm the The second sensing area where the object is located. The responsive touch sensing method of claim 18, wherein the second sensing module is used to confirm that the second sensing region is located by: scanning the second sensing mode one by one The sensing line groups of the group, wherein the two sensing line groups of the second sensing module that are scanned one after another are not adjacent to each other; and when scanning a Y-th sensing line group of the second sensing module While sensing that the object is touched, the plurality of sensing line groups before and after the Y-th sensing line group are scanned one by one to confirm the second sensing area where the object is located. The resistive touch sensing method of claim 17, wherein when the X-th sense line group in the first sensing module is scanned and the object is sensed to be touched, the X-th is The step of scanning the sensing line groups of the sensing line group one by one to confirm the first sensing area where the object is located includes: sensing the X-th sensing line group in the first sensing module to sense After being touched by the object, the plurality of sensing line groups included in the second sensing module are scanned one by one, wherein the two sensing line groups of the second sensing module that are scanned one after another are not adjacent to each other; And when the first Y sensing line group of the second sensing module is scanned and the object is touched, the plurality of sensing line groups of the X sensing line group are scanned one by one to confirm the object. The first sensing area is located, and the plurality of sensing line groups of the first and second sensing line groups are scanned one by one to confirm the second sensing area where the object is located. A resistive touch control system comprising: a touch panel; a first sensing module includes a plurality of sensing line groups, and each of the sensing line groups of the first sensing module corresponds to a first sensing on the touch panel And a processing circuit electrically coupled to the first sensing module to scan the sensing line groups of the first sensing module one by one, wherein the first sensing module is scanned before and after The two sensing line groups are not adjacent to each other, and after scanning an X-th sensing line group of the first sensing module and sensing that the object is touched, the front and back of the X-th sensing line group The sensing line group is scanned one by one to confirm the first sensing area where the object is located. The resistive touch control system of claim 21, further comprising: a second sensing module having a plurality of sensing line groups, and each of the second sensing modules The line group corresponds to a second sensing area on the touch panel. The resistive touch control system of claim 22, wherein the processing circuit is electrically coupled to the second sensing module to scan the sensing line groups of the second sensing module one by one. The two sensing line groups of the second sensing module that are scanned one after another are not adjacent to each other, and are scanned by a Y-th sensing line group of the second sensing module to sense that the object is touched by the object. After the touch, the plurality of sensing line groups before and after the Y-th sense line group are scanned one by one to confirm the second sensing area where the object is located.