CN101893963B - Method for calibrating and recording initial pressing point on touch panel - Google Patents

Abstract

The invention relates to a method for correcting and recording an initial pressing point on a touch panel, which divides a plurality of sensors on the touch panel into a plurality of first sensing groups numbered in sequence and equally divides the plurality of sensors in each first sensing group into a plurality of second sensing groups numbered in sequence when the initial pressing point of the touch panel is corrected and recorded. Then, after detecting the initial pressing point on the touch panel, a plurality of headers corresponding to the first sensing groups are set, and a data structure is set corresponding to the sensors one by one according to whether the first sensing groups corresponding to the headers contain the sensor detecting the initial pressing point. And finally, filtering the initial pressing points from the plurality of sensed pressing points on the touch panel according to the initial pressing point information recorded by the read data structure.

Description

Method for calibrating and recording initial pressing point on touch panel

technical field

The invention discloses a method for correcting and recording initial pressing points on a touch panel, especially a method for grouping sensors used to detect pressing points on a touch panel and setting a corresponding data structure for the touch panel A method for effectively recording and correcting the initial pressing point.

Background technique

In the manufacture of the touch panel, some touch panels directly embed the pressure sensor in the touch panel, so as to effectively reduce the manufacturing cost and achieve the goal of thinning the touch panel. However, due to unpredictable factors such as component characteristic drift that may occur during manufacturing, the pressure sensors embedded in the finished touch panel may feel sensitive when the user does not make any effective trigger action. The detection of a pressing point that should not exist, that is, the so-called initial pressing point (Initial Touch Point), affects the accuracy of operating the touch panel and causes inconvenience to the user. Therefore, some touch panels will adopt the detection mechanism of the initial pressing point for all the pressure sensors to accurately find out all the initial pressing points to improve the accuracy of the touch panel; but due to the detection of the touch panel All the initial pressing points on the screen require a large amount of data processing, and each pressure sensor needs memory space to record whether it detects the initial pressing point, so for the touch panel that needs to process the pressing point in real time , will greatly slow down the response speed and consume a considerable amount of memory space, and as the area of the touch panel increases, the above problems will deteriorate more rapidly.

Contents of the invention

The invention discloses a method for correcting an initial pressing point of a touch panel. The touch panel includes a plurality of sensors, each of which is used to detect a pressing point on the touch panel. The method includes dividing the plurality of sensors into a plurality of sequentially numbered first sensing groups; equally dividing the plurality of sensors in each first sensing group into a plurality of sequentially numbered sensing groups. The second sensing group, wherein each of the plurality of second sensing groups includes a plurality of the sensors of the same number and sequentially numbered; detects the initial pressing point on the touch panel; sets corresponding to the plurality of sensors A plurality of headers of the first sensing group; corresponding to a header (Header) corresponding to the first sensing group that detects the initial pressing point, a plurality of data structures are set, and each of these data structures corresponds to A sensor that detects the initial pressing point in the first sensing group, and each of these data structures records the number of the corresponding second sensing group in the first sensing group and the data structure corresponding to the sensor number in the second sensing group; read the plurality of headers and the plurality of data structures corresponding to the plurality of headers to determine a plurality of initial values on the touch panel pressing points; and filtering out the information of the plurality of initial pressing points from the plurality of pressing points sensed on the touch panel.

The invention discloses a method for recording an initial pressing point of a touch panel. The touch panel includes a plurality of sensors, each of which is used to detect a pressing point on the touch panel. The method includes dividing the plurality of sensors into a plurality of sequentially numbered first sensing groups; equally dividing the plurality of sensors in each first sensing group into a plurality of sequentially numbered sensing groups. The second sensing group, wherein each of the plurality of second sensing groups includes a plurality of the sensors of the same number and sequentially numbered; detects the initial pressing point on the touch panel; sets corresponding to the plurality of sensors A plurality of headers of the first sensing group; corresponding to a header corresponding to the first sensing group that detects the initial pressing point, a plurality of data structures are set, and each of these data structures corresponds to the first sensing group respectively. A sensor in a sensing group that detected the initial pressing point, and each of these data structures records the number of the corresponding second sensing group in the first sensing group and the number of the data structure in the The corresponding sensor number in the second sensing group.

Description of drawings

FIG. 1 illustrates grouping and distribution of sensors on a touch panel made according to the present invention;

FIG. 2 is a schematic diagram of the data structure used to manage the single first sensing group included in the touch panel shown in FIG. 1 disclosed by the present invention, to represent each first sensing group shown in FIG. 1 Whether there are conditions such as sensing the initial pressing point and the number of the sensed initial pressing point;

FIG. 3 is a simplified flow chart of the method for recording and correcting the initial pressing point on the touch panel disclosed in the present invention.

Among them, reference signs

100 touch panel 210 first sensing group

220 second sensing group 230 sensor

310 Header 320 Data Structure Group

330 data structure Num_2nd second sensing group number field

TAG tag field #(2nd) second sensing group number field

#(Sensor) sensor number field

X M second sensing groups Y N first sensing groups

402, 404, 406, 408, 410, 412, 414 steps

Detailed ways

The invention discloses a method for correcting and recording an initial pressing point on a touch panel. In this method, the position information of the initial pressing point on the touch panel is recorded in advance by grouping and classifying the sensors distributed on the touch panel with the data structure provided by the present invention, so that a relatively small amount of memory can be used To record the position or number of the sensor that detected the initial pressing point; moreover, as long as the initial pressing point position information is read in a very short time when the touch panel is turned on, it can be greatly reduced compared to the previous technology. The amount of data processed to read information about the initial press point.

Please refer to FIG. 1 , which illustrates grouping and distribution of sensors on a touch panel 100 . As shown in FIG. 1 , the touch panel 100 includes a plurality of sensors 230 for sensing pressure, wherein the sensors 230 are classified into a plurality of second sensing groups 220 in groups of eight, and Multiple second sensing groups 220 located in the same row on the touch panel 100 are classified as the same first sensing group 210, so the touch panel 100 shown in FIG. 1 includes N first sensing groups 210 , and each first sensing group 210 includes M second sensing groups 220 . The above-mentioned sizes of M and N are adjusted according to the area of the touch panel 100 itself and the resolutions of the plurality of pressure sensors 230. For example, if the area of the touch panel 100 is 10.1 (ie 10.1") , and the resolution of each sensor 230 is 256×150, then the value of M is 32 (that is, corresponding to a total of 32×8=256 pressure sensors 230 per row on the touch panel 100), and N The value of is 150. In addition, other embodiments of the present invention are not limited to the sensor 230 being classified into a plurality of second sensing groups 220 in groups of eight, in other words, the sensor Other embodiments that the detector 230 is classified into a plurality of second sensing groups by numbers other than eight should also be regarded as modified embodiments of the present invention. In addition, in an embodiment of the present invention, The number of first sensing groups 210 can also be set according to the number of gate line driving units used in the touch panel 100, that is, how many first sensing groups are set according to the number of gate line driving units. 210, but other embodiments of the present invention are not limited thereto.

Please refer to FIG. 2, which is a schematic diagram of the data structure used to manage the single first sensing group 210 included in the touch panel 100 shown in FIG. Whether the first sensing group 210 senses the initial pressing point and the number of the sensed initial pressing points. As shown in FIG. 2 , a header 310 corresponds to the single first sensing group 210 shown in FIG. 2 , and includes a second sensing group number field Num_2nd and a tag field TAG. The field Num_2nd of the number of second sensing groups is used to represent the number of second sensing groups in the single first sensing group 210 that detects the initial pressing point. The tag field TAG is used to represent whether there is any second sensing group 220 that detects the initial pressing point on the single first sensing group 210 currently. In an embodiment of the present invention, both the second sensing group number field Num_2nd and the tag field TAG are expressed in binary; for example, when a single first sensing group 210 includes thirty detection When the second sensing group 220 of the initial pressing point is detected, the value of the second sensing group number column Num_2nd can be "11110", and the value of the tag TAG can be "1" to represent the single first sensing group. The sensing group 210 includes at least one condition of the second sensing group 220 that detects the initial pressing point.

The header 310 connects and manages a plurality of data structures 330 in a data structure management manner such as a linked list (Linked List) and/or a pointer (Pointer). The relationship between the shown data structures, in FIG. 2, a plurality of data structures 330 are combined with the plurality of sensors 230 contained in each of the plurality of second sensing groups 220 shown in FIG. 1, and are classified into multiple data structures. structure group 320, wherein a plurality of data structure groups 320 correspond to a plurality of second sensing groups 220 included in the single first sensing group 210; however, there is no direct It is necessary to implement a plurality of data structure groups 320 shown in FIG. 2 . The single data structure group 320 includes a plurality of data structures 330 connected in series by means of data structure management such as linked lists and/or pointers, wherein the plurality of data structures 330 correspond to the plurality of data structures included in the single second sensing group 220. A sensor 230. As shown in FIG. 2 , the single data structure 330 includes at least two fields, one is the second sensing group number field #(2nd), which is used to represent the sensor 230 corresponding to the single data structure 330 The number of the second sensing group 220 in its corresponding first sensing group 210; the other is the sensor number field # (Sensor), which is used to indicate that the sensor 230 corresponding to the single data structure 330 is in the corresponding at the number in the second sensing group 220 . For example, when the number of the single second sensing group 220 in the first sensing group 210 is 28, there are three sensors numbered 1, 3, and 6 on the single second sensing group 220. When the sensor 230 senses the initial pressing point, three data structures 330 corresponding to the three sensors 230 will be generated, wherein the second sensing group number column #(2nd) of the three data structures 330 The values are all 28 (can be expressed as "11100" in binary), and the values of the sensor number field # (Sensor) of the three data structures 330 are 1, 3, 6 respectively (can be expressed as "in binary) 001", "011", "110"). In addition, the existence of the single data structure 330 represents the existence of a single initial pressing point on the touch panel 100 , so the single data structure 330 records the position information of the single initial pressing point on the touch panel 100 .

The connection and management methods between the data structures shown in Figure 2 are not limited to the above-mentioned linked lists or pointers, etc., so the embodiment shown in Figure 2 is transformed into an embodiment derived from other data structure management methods not mentioned above , should still be regarded as the scope of the present invention. In addition, the linked list shown for the single first sensing group 210 in FIG. 2 can also be directly represented by a continuous bit string in the memory, as long as the headers 310 and the data structures 330 are planned in advance. The condition of the number of bits in the field is sufficient.

The method for recording and correcting the initial pressing point on the touch panel and the related reading steps disclosed in the present invention are further explained in the form of a flow chart in FIG. 3 . As shown in Figure 3, the method for recording and correcting the initial pressing point on the touch panel disclosed by the present invention includes the following steps:

Step 401: Provide a touch panel, which includes a plurality of sensors, wherein each sensor is used to detect a pressing point on the touch panel;

Step 402: divide the plurality of sensors into a plurality of sequentially numbered first sensing groups, wherein each first sensing group includes a plurality of sensors;

Step 404: Divide the plurality of sensors in each first sensing group into a plurality of sequentially numbered second sensing groups, wherein each of the plurality of second sensing groups includes a plurality of identical the number of sensors numbered sequentially;

Step 405: Detecting the initial pressing point on the touch panel;

Step 406: Setting a plurality of headers corresponding to the plurality of first sensing groups, each header recording the number of the second sensing group in which the initial pressing point is detected in the corresponding first sensing group and A label used to indicate whether an initial pressing point is detected in the first sensing group;

Step 408: Corresponding to a header corresponding to the first sensing group that detected the initial pressing point, set a plurality of data structures, the plurality of data structures are respectively corresponding to the detection in the first sensing group multiple sensors to the initial pressing point, and each data structure records the number of the corresponding second sensing group in the first sensing group and the number of the data structure in the second sensing group Corresponding sensor number;

Step 410: Read the tags contained in the plurality of headers to determine the serial numbers of the first sensing groups that detect the initial pressing points;

Step 412: Read the plurality of data structures contained in each of the plurality of first sensing groups that detected the initial pressing point to determine the numbers and numbers of the plurality of second sensing groups that detected the initial pressing point the serial number of the sensor that detects the initial pressing point in the second sensing group that detects the initial pressing point; and

Step 414 : Filter out the information of the initial pressing points from the sensed pressing points on the touch panel.

Steps 401-404 describe the grouping method of pressure sensors disclosed in FIG. The multiple second sensing groups 220 in the group 210 are numbered sequentially, and the multiple first sensing groups 210 on the touch panel 100 are also numbered sequentially. Taking the situation in FIG. 1 and the values of M and N as 32 and 150 as an example, the eight sensors 230 in the same second sensing group 220 can be numbered 1-8. The thirty-two second sensing groups 220 in the sensing group 210 may be numbered 1-32, and the one hundred and fifty first sensing groups 210 on the touch panel 100 may be numbered 1-32. 150.

Steps 405-408 describe the process of first detecting the initial pressing point and creating the initial pressing point data structure record as shown in FIG. 2 when the touch panel 100 is powered on for a short time. In step 406 , a header 310 as shown in FIG. 2 is established for each first sensing group 210 on the touch panel 100 according to the detection result of the initial pressing point of the touch panel 100 . In step 408, the same number of data structures 330 will be established according to the number of sensors 230 that detect the initial pressing point in the single first sensing group 210, as shown in FIG. 2; in other words, FIG. 2 The number of data structures 330 included in each data structure group 320 shown may vary. In this way, the header 310 corresponding to the first sensing group 210 including at least one detected initial pressing point is linked to at least one data structure 330 , otherwise, there is no data structure 330 available for linking. So far, the recording procedure of the initial pressing point on the touch panel 100 is completed.

Steps 410-412 describe the process of the touch panel 100 reading the position information of the multiple initial pressing points recorded in the above-mentioned recording program during subsequent use. In step 410, the touch panel 100 first reads the header 310 shown in FIG. The second sensing group number field Num_2nd included in at least one data structure 330 determines the number of second sensing modules 220 with initial pressing points among the first sensing modules 210 including initial pressing points; please note , to summarize the above description, it can be known that the value of the second sensing group number field Num_2nd is less than or equal to the total number of data structures 330 to be linked later, because a single second sensing group 220 can contain at least one sensing sensor 230 to the point of initial compression. Next, in step 412 , reading is performed following the multiple data structures 330 linked by the header 310 , so as to accurately grasp the relevant information of the sensor 230 that detected the initial pressing point one by one.

Finally, in step 414, with respect to the relevant position information of the sensors 230 that detected the initial pressing points read in steps 410-412, the relevant pressing point determinations of these sensors 230 are offset to maintain the touch panel 100% accuracy in sensing pressure points.

Taking the above case where the value of N is 150, since in steps 410-412, the data processing amount only includes one hundred and fifty headers 310 and a plurality of data structures 330 followed after the header with the initial pressing point , thus saving at least the amount of data processing of the first sensing group 210 that does not detect the initial pressing point. For example, assuming that only three first sensing groups 210 of the one hundred and fifty first sensing groups 210 detect the initial pressing point, the other one hundred and forty-seven first sensing groups 210 The amount of data processing will be greatly reduced to the reading of 147 headers 310 . In this way, for a touch panel that requires a real-time processing mechanism for the pressed point, the response speed of the touch panel when processing the pressed point can be greatly improved.

Please note that other embodiments produced by adding the various restrictions mentioned in this specification to the steps disclosed in FIG. 3 and/or applying reasonable permutations and combinations should still be regarded as embodiments of the present invention.

The invention discloses a method for recording and correcting an initial pressing point on a touch panel. Through the method disclosed in the present invention, the touch panel installed with the pressure sensor can quickly detect and record the sensor that detected the initial pressing point with a small memory usage in a short time when it is just turned on Position information; In addition, the recorded sensor position information can be quickly read when the touch panel continues to be used later, and a large amount of sensor position information processing that does not detect the initial pressing point can be saved quantity.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (13)

1. A method for calibrating an initial pressing point of a touch panel, characterized in that the touch panel comprises a plurality of sensors, wherein each sensor is used to detect a pressing point on the touch panel, the touch panel Methods include: dividing the plurality of sensors into a plurality of sequentially numbered first sensing groups; Dividing the plurality of sensors in each first sensing group into a plurality of sequentially numbered second sensing groups, wherein each of the plurality of second sensing groups includes a plurality of the same number and according to the serial number of the sensor; detecting an initial pressing point on the touch panel; setting a plurality of headers corresponding to the plurality of first sensing groups; Corresponding to a header corresponding to the first sensing group in which the initial pressing point is detected, a plurality of data structures are set, and each of these data structures corresponds to the first sensing group in which the initial pressing point is detected A sensor, and each of these data structures records the number corresponding to the second sensing group of the data structure in the first sensing group and the corresponding number of the data structure in the second sensing group sensor number; reading the plurality of headers and the plurality of data structures respectively corresponding to the plurality of headers to determine a plurality of initial pressing points on the touch panel; and filtering out the information of the plurality of initial pressing points from the sensed plurality of pressing points on the touch panel; Wherein the initial pressing point is that the sensor of the touch panel senses the pressing point that should not exist when the user does not make any effective trigger action. 2. The method according to claim 1, wherein each header records the number of the second sensing group in which the initial pressing point is detected in the corresponding first sensing group and is used to represent the first sensing group A tag that senses whether the initial press point is detected in the sensing group. 3. The method according to claim 1, wherein each of the plurality of first sensing groups includes the same number of second sensing groups. 4. The method according to claim 1, wherein the number of the plurality of first sensing groups and the number of the plurality of second sensing groups contained in each of the plurality of first sensing groups are based on The resolution of the sensors used to detect the pressing points on the touch panel is determined. 5 . The method according to claim 1 , wherein the number and label of the second sensing group that detects the initial pressing point recorded in each header are expressed in binary form. 6. The method according to claim 1, wherein the number of the second sensing group in the first sensing group corresponding to the data structure recorded in each data structure is the same as that of the second sensing group. The number of the sensor in the sensing group that detected the initial pressing point is expressed in binary. 7. The method according to claim 1, wherein the plurality of headers and the plurality of data structures corresponding to the plurality of headers are read to determine the plurality of initial pressing points on the touch panel Include: reading the tags included in the plurality of headers to determine the number of the plurality of first sensing groups that detected the initial pressing point; and Reading the plurality of data structures contained in each of the plurality of first sensing groups that detected the initial pressing point to determine the number of the plurality of second sensing groups that detected the initial pressing point and the plurality of The serial number of the sensor that detected the initial pressing point in the second sensing group that detected the initial pressing point. 8. A method for recording an initial pressing point of a touch panel, characterized in that the touch panel comprises a plurality of sensors, wherein each sensor is used to detect a pressing point on the touch panel, the touch panel Methods include: dividing the plurality of sensors into a plurality of sequentially numbered first sensing groups; Dividing the plurality of sensors in each first sensing group into a plurality of sequentially numbered second sensing groups, wherein each of the plurality of second sensing groups includes a plurality of the same number and according to the serial number of the sensor; detecting an initial pressing point on the touch panel; setting a plurality of headers corresponding to the plurality of first sensing groups; and Corresponding to a header corresponding to the first sensing group in which the initial pressing point is detected, a plurality of data structures are set, and each of these data structures corresponds to the first sensing group in which the initial pressing point is detected A sensor, and each of these data structures records the number of the corresponding second sensing group in the first sensing group and the sensor corresponding to the data structure in the second sensing group serial number; Wherein the initial pressing point is that the sensor of the touch panel senses the pressing point that should not exist when the user does not make any effective trigger action. 9. The method according to claim 8, wherein each header records the number of the second sensing group in which the initial pressing point is detected in the corresponding first sensing group and is used to represent the first sensing group A tag that senses whether the initial press point is detected in the sensing group. 10 . The method according to claim 8 , wherein each of the first sensing groups includes the same number of second sensing groups. 11 . 11. The method according to claim 8, wherein the number of the plurality of first sensing groups and the number of the plurality of second sensing groups included in each of the plurality of first sensing groups are based on The resolution of the sensors used to detect the pressing points on the touch panel is determined. 12 . The method according to claim 8 , wherein the number and label of the second sensing group that detects the initial pressing point recorded in each header are expressed in binary form. 13 . 13. The method according to claim 8, wherein each data structure records the corresponding number of the second sensing group in the first sensing group and the number of the second sensing group The number of the sensor in which the initial press point was detected is represented in binary.

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