CN103472946A - Method for dynamically adjusting reporting rate of touch screen - Google Patents

Method for dynamically adjusting reporting rate of touch screen Download PDF

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CN103472946A
CN103472946A CN2013103852352A CN201310385235A CN103472946A CN 103472946 A CN103472946 A CN 103472946A CN 2013103852352 A CN2013103852352 A CN 2013103852352A CN 201310385235 A CN201310385235 A CN 201310385235A CN 103472946 A CN103472946 A CN 103472946A
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touch screen
reporting rate
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CN103472946B (en
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张强
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Abstract

本发明公开了一种动态调整触摸屏上报速率的方法,包括以下步骤:(1)设定一个检测时间,根据触摸屏上单个手指上报速率的最初设置值及触触摸屏同一时间所能识别的手指个数的最大值,获取检测时间内应用层收到的坐标点个数的阈值;(2)根据步骤(1)中应用层收到的坐标点个数阈值设定一个小于阈值的设定值n1;(3)在检测时间内,触摸屏终端识别当前正在触摸的手指个数;根据当前触摸屏单个手指的上报速率,触摸屏终端计算检测时间内应用层收到的坐标点个数n;(4)将n与n1进行比较:若n1大于n时,则降低当前触摸屏单个手指的上报速率;若n1小于n时,则升高当前触摸屏单个手指的上报速率;本发明能够动态的调整触摸屏的上报速率,保证触摸屏的触摸效果。

The invention discloses a method for dynamically adjusting the reporting rate of a touch screen, which includes the following steps: (1) setting a detection time, according to the initial setting value of the reporting rate of a single finger on the touch screen and the number of fingers that can be recognized at the same time when touching the touch screen to obtain the threshold of the number of coordinate points received by the application layer within the detection time; (2) set a set value n 1 smaller than the threshold according to the threshold of the number of coordinate points received by the application layer in step (1) ;(3) During the detection time, the touch screen terminal identifies the number of fingers currently touching; according to the reporting rate of a single finger on the current touch screen, the touch screen terminal calculates the number n of coordinate points received by the application layer within the detection time; n is compared with n1 : if n1 is greater than n, then reduce the reporting rate of a single finger on the current touch screen; if n1 is less than n, then increase the reporting rate of a single finger on the current touch screen; the present invention can dynamically adjust the touch screen The reporting rate ensures the touch effect of the touch screen.

Description

一种动态调整触摸屏上报速率的方法A method of dynamically adjusting the reporting rate of the touch screen

技术领域technical field

本发明涉及触摸技术,特别涉及一种动态调整触摸屏上报速率的方法。The invention relates to touch technology, in particular to a method for dynamically adjusting the reporting rate of a touch screen.

背景技术Background technique

触摸屏都是以固定的上报速率80点/秒,向应用层上报坐标点的,也就是说当手指在触摸屏上滑动的时候,对于每个手指头,触摸屏会每秒向应用层上报80个点坐标信息,针对没有用的触摸坐标点信息,也按照80点/秒上报数据,占用主机大量资源。如果是多指触摸,比如说5个手指头同时在触摸屏上滑动,那么每秒应用层就会收到400个左右的触摸坐标点信息,这将会对系统造成极大的负担,导致系统运行不流畅卡顿的问题,甚至丢失部分触摸信息。The touch screen reports coordinate points to the application layer at a fixed reporting rate of 80 points per second, that is to say, when a finger slides on the touch screen, for each finger, the touch screen will report 80 points per second to the application layer Coordinate information, for useless touch coordinate point information, also reports data at 80 points per second, occupying a lot of resources of the host. If it is a multi-finger touch, for example, five fingers slide on the touch screen at the same time, then the application layer will receive about 400 touch coordinate point information per second, which will cause a great burden on the system and cause the system to run The problem of not being smooth and stuck, and even losing some touch information.

在公告号为CN101930319的中国发明专利公开了一种触摸屏上报触摸信息方法,该方法根据上一帧触摸点的坐标和当前帧触摸点的坐标计算出上一帧触摸点和当前帧触摸点的距离;根据所述距离的大小确定上报的频度,所述距离越小,上报的频度越低,所述距离越大,上报的频度越高。该方法主要是根据触摸点移动的速度来调整上报的频度,当触摸点移动的速度较慢时,降低上报的频度,可以减少对主机资源的占用和对主机运行的影响。但是在该方法中,当由多个手指作用于触摸屏时,而且每个手指的触摸速度(即触摸点移动的速度)都比较快时,还是很容易导致应用层因接收到太多的坐标点个数而导致系统处理负担过大的问题,因此该方法只适合在单位时间内触摸点个数不多的情况下使用,不适合在多指快速触摸的情况下使用。The Chinese invention patent with the notification number CN101930319 discloses a method for reporting touch information on a touch screen. The method calculates the distance between the touch point in the previous frame and the touch point in the current frame based on the coordinates of the touch point in the previous frame and the coordinates of the touch point in the current frame. ; Determine the reporting frequency according to the distance, the smaller the distance, the lower the reporting frequency, and the larger the distance, the higher the reporting frequency. This method mainly adjusts the frequency of reporting according to the moving speed of the touch point. When the moving speed of the touch point is slow, reducing the frequency of reporting can reduce the occupation of host resources and the impact on the operation of the host. However, in this method, when multiple fingers act on the touch screen, and the touch speed of each finger (that is, the speed at which the touch point moves) is relatively fast, it is still easy to cause the application layer to receive too many coordinate points. Therefore, this method is only suitable for use when the number of touch points per unit time is small, and is not suitable for use in the case of multi-finger fast touch.

发明内容Contents of the invention

本发明的目的在于克服现有技术的缺点与不足,提供一种动态调整触摸屏上报速率的方法,该方法在多指触摸的状态下,动态的调整触摸屏上报的速率,即满足触摸屏多指触摸的需要,又不会使得触摸屏终端卡顿。The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a method for dynamically adjusting the reporting rate of the touch screen. In the state of multi-finger touch, the method dynamically adjusts the reporting rate of the touch screen, that is, meets the requirement of multi-finger touch on the touch screen. required without causing the touch screen terminal to freeze.

本发明的目的通过下述技术方案实现:一种动态调整触摸屏上报速率的方法,包括以下步骤:The object of the present invention is achieved through the following technical solutions: a method for dynamically adjusting the reporting rate of a touch screen, comprising the following steps:

(1)设定一个检测时间,根据触摸屏上单个手指上报速率的最初设置值vmax及触触摸屏同一时间所能识别的手指个数的最大值,获取检测时间内应用层收到的坐标点个数的阈值;(1) Set a detection time, according to the initial set value v max of the reporting rate of a single finger on the touch screen and the maximum number of fingers that can be recognized at the same time when touching the touch screen, obtain the coordinate points received by the application layer within the detection time number of thresholds;

(2)根据步骤(1)中应用层收到的坐标点个数阈值设定一个小于阈值的设定值n1(2) According to the threshold of the number of coordinate points received by the application layer in step (1), set a set value n 1 smaller than the threshold;

(3)在检测时间内,触摸屏终端识别当前正在触摸的手指个数;根据当前触摸屏单个手指的上报速率,触摸屏终端计算检测时间内应用层收到的坐标点个数n;(3) Within the detection time, the touch screen terminal identifies the number of fingers currently touching; according to the reporting rate of a single finger on the current touch screen, the touch screen terminal calculates the number n of coordinate points received by the application layer within the detection time;

(4)将步骤(3)中检测时间内应用层收到的坐标点个数n与设定值n1进行比较:(4) Compare the number n of coordinate points received by the application layer within the detection time in step (3) with the set value n 1 :

若设定值n1大于n时,则降低当前触摸屏单个手指的上报速率;If the set value n1 is greater than n, then reduce the reporting rate of a single finger on the current touch screen;

若设定值n1小于n时,则升高当前触摸屏单个手指的上报速率;If the set value n1 is less than n, then increase the reporting rate of a single finger on the current touch screen;

使得调整后的单个手指上报速率调整为vnowMake the adjusted single-finger reporting rate adjusted to v now :

vv nownow == aa ,, aa << vv maxmax vv maxmax ,, aa &GreaterEqual;&Greater Equal; vv maxmax ;;

其中a为:where a is:

aa == nno 11 tftf ;;

其中t为检测时间,f为触摸屏终端识别当前正在触摸的手指个数。Where t is the detection time, and f is the number of currently touching fingers identified by the touch screen terminal.

优选的,所述步骤(1)中获取的检测时间内应用层收到的坐标点个数的阈值nmax为:Preferably, the threshold n max of the number of coordinate points received by the application layer within the detection time obtained in the step (1) is:

nmax=vmax.fmax.t;n max = v max .f max .t;

其中vmax为触摸屏上单个手指的上报速率的最初设置值,即触摸屏的最大上报速率;所述fmax为触摸屏同一时间所能识别的手指个数的最大值,t为检测时间。Where v max is the initial set value of the reporting rate of a single finger on the touch screen, i.e. the maximum reporting rate of the touch screen; said f max is the maximum value of the number of fingers that the touch screen can recognize at the same time, and t is the detection time.

更进一步的,所述步骤(3)中,在检测时间内触摸屏终端的应用层收到的坐标点个数n为:Furthermore, in the step (3), the number n of coordinate points received by the application layer of the touch screen terminal within the detection time is:

n=v.f.t;n = v.f.t;

其中v为当前触摸屏单个手指的上报速率,f为触摸屏终端识别当前正在触摸的手指个数。Where v is the reporting rate of a single finger on the current touch screen, and f is the number of fingers currently being touched by the touch screen terminal.

更进一步的,所述检测时间t为0.1秒,所述触摸屏上报速率的最初设置值vmax为80点/秒,所述触摸屏同一时间所能识别的手指个数的最大值fmax为5个,则获取的检测时间t内应用层收到的坐标点个数的阈值nmax为40点。Further, the detection time t is 0.1 second, the initial set value v max of the report rate of the touch screen is 80 points/second, and the maximum value f max of the number of fingers that the touch screen can recognize at the same time is 5 , then the threshold n max of the number of coordinate points received by the application layer within the obtained detection time t is 40 points.

更进一步的,所述设定值n1为检测时间t内以不占用系统大量资源、造成系统卡顿为前提时应用层所接收的坐标点个数,所述设定值n1为24点。Furthermore, the set value n1 is the number of coordinate points received by the application layer on the premise of not occupying a large amount of system resources and causing the system to freeze within the detection time t, and the set value n1 is 24 points .

优选的,所述触摸屏的上报速率通过触摸屏终端的上报寄存器来调整。Preferably, the reporting rate of the touch screen is adjusted through the reporting register of the touch screen terminal.

本发明相对于现有技术具有如下的优点及效果:Compared with the prior art, the present invention has the following advantages and effects:

(1)本发明根据当前检测时间内应用层所接收的坐标点个数对触摸屏的上报速率进行实时动态的调整;当应用层在检测时间内接收的坐标点个数大于设定值时,则降低触摸屏上单个手指的上报速率,以减轻系统负担,避免应用层接收到太大数量的坐标点个数对触摸屏终端运行造成负担,从而导致触摸屏终端出现运行不流畅及卡顿等现象;当应用层在检测时间内接收的坐标点个数小于设定值时,升高触摸屏上单个手指的上报速率,以确保触摸屏终端的工作效率。本发明方法根据应用层检测时间内所接收到的坐标点个数来实时调整触摸屏单个手指的上报速率,保证多指触摸带来坐标点个数上报过多的情况下能够有效地减少系统的负担,保证触摸效果。通过本发明方法触摸屏上报速率的调整既不会影响触摸屏的触摸效果,又不会造成系统的卡顿,同时也可以提升用户的使用体验。(1) The present invention adjusts the reporting rate of the touch screen in real time and dynamically according to the number of coordinate points received by the application layer within the current detection time; when the number of coordinate points received by the application layer within the detection time is greater than the set value, then Reduce the reporting rate of a single finger on the touch screen to reduce the burden on the system and prevent the application layer from receiving a large number of coordinate points, which will cause a burden on the operation of the touch screen terminal, resulting in unsmooth operation and stuttering of the touch screen terminal; when the application When the number of coordinate points received by the layer within the detection time is less than the set value, the reporting rate of a single finger on the touch screen is increased to ensure the working efficiency of the touch screen terminal. The method of the present invention adjusts the reporting rate of a single finger on the touch screen in real time according to the number of coordinate points received within the detection time of the application layer, so as to ensure that the burden of the system can be effectively reduced when the number of coordinate points is reported too much due to multi-finger touch , to ensure the touch effect. The adjustment of the reporting rate of the touch screen through the method of the present invention will neither affect the touch effect of the touch screen nor cause the system to freeze, and can also improve the user experience.

(2)本发明方法中的设定值是在不占用系统大量资源、造成系统卡顿为前提下所设定的,因此保证了触摸屏上报速率调整后,触摸效果不受影响。(2) The setting value in the method of the present invention is set on the premise that it does not occupy a large amount of system resources and cause the system to freeze, thus ensuring that the touch effect will not be affected after the touch screen reporting rate is adjusted.

附图说明Description of drawings

图1是本发明方法的流程图。Figure 1 is a flow chart of the method of the present invention.

具体实施方式Detailed ways

下面结合实施例及附图对本发明作进一步详细的描述,但本发明的实施方式不限于此。The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

实施例Example

如图1所示,本实施例公开了一种动态调整触摸屏上报速率的方法,包括以下步骤:As shown in Figure 1, this embodiment discloses a method for dynamically adjusting the reporting rate of the touch screen, including the following steps:

(1)设定一个检测时间,根据触摸屏上单个手指上报速率的最初设置值vmax及触触摸屏同一时间所能识别的手指个数的最大值fmax,获取检测时间t内应用层收到的坐标点个数的阈值nmax为:(1) Set a detection time, according to the initial set value v max of the reporting rate of a single finger on the touch screen and the maximum value f max of the number of fingers that can be recognized at the same time when touching the touch screen, obtain the information received by the application layer within the detection time t The threshold n max of the number of coordinate points is:

nmax=vmax.fmax.t;n max = v max .f max .t;

vmax为触摸屏上报速率的最初设置值,即触摸屏的最大上报速率,fmax为触摸屏同一时间所能识别的手指个数的最大值,t为检测时间。本实施例中vmax=80点/秒,t=0.1S,fmax=5个;因此nmax为40。v max is the initial setting value of the touch screen report rate, that is, the maximum report rate of the touch screen, f max is the maximum number of fingers that the touch screen can recognize at the same time, and t is the detection time. In this embodiment, v max =80 points/second, t=0.1S, f max =5; therefore n max is 40.

(2)根据设阈值nmax设定一个小于阈值nmax的设定值n1,其中n1是指检测时间内以不占用系统大量资源、造成系统卡顿为前提时应用层接收的坐标点个数。(2) Set a set value n 1 smaller than the threshold n max according to the set threshold n max , where n 1 refers to the coordinate point received by the application layer on the premise that it does not occupy a large amount of system resources and cause the system to freeze within the detection time number.

(3)在检测时间t=0.1S内,触摸屏终端识别当前正在触摸的手指个数f;根据当前触摸屏的上报速率v,触摸屏终端计算检测时间内应用层收到的坐标点个数n,其中本实施例中在检测时间t内触摸屏终端的应用层收到的坐标点个数n为:(3) Within the detection time t=0.1S, the touch screen terminal recognizes the number f of fingers currently touching; according to the current report rate v of the touch screen, the touch screen terminal calculates the number n of coordinate points received by the application layer within the detection time, where In this embodiment, the number n of coordinate points received by the application layer of the touch screen terminal within the detection time t is:

n=v.f.t;n = v.f.t;

v为当前触摸屏单个手指触摸的上报速率,f为触摸屏终端识别的当前正在触摸的手指个数。v is the reporting rate of a single finger touch on the current touch screen, and f is the number of currently touching fingers recognized by the touch screen terminal.

(4)将步骤(3)中检测时间t内应用层收到的坐标点个数n与坐标点个数的设定值n1进行比较:(4) Compare the number n of coordinate points received by the application layer within the detection time t in step (3) with the set value n 1 of the number of coordinate points:

若设定值n1大于n时,则通过触摸屏终端的上报寄存器降低当前触摸屏单个手指的上报速率;If the set value n1 is greater than n, the reporting rate of a single finger on the current touch screen is reduced through the reporting register of the touch screen terminal;

若设定值n1小于n时,则触摸屏终端的上报寄存器升高当前触摸屏单个手指的上报速率;If the set value n1 is less than n, the reporting register of the touch screen terminal increases the reporting rate of a single finger on the current touch screen;

使得调整后的单个手指上报速率调整为vnowMake the adjusted single-finger reporting rate adjusted to v now :

vv nownow == aa ,, aa << vv maxmax vv maxmax ,, aa &GreaterEqual;&Greater Equal; vv maxmax ;;

其中a为:where a is:

aa == nno 11 tftf ;;

本实施例中设定值n1为24点,vmax=80点/秒。In this embodiment, the set value n 1 is 24 points, and v max =80 points/second.

若在步骤(3)中检测到时间t内应用层收到的坐标点个数n为32,触摸屏终端识别当前正在触摸的手指个数f为4个,则当前每个手指上报速率为80点/秒,此时设定值n1小于n,需要通过降低上报速率的方式来减少应用层收到的坐标点个数;通过步骤(4)计算得到a为60,此时a的值小于vmax,因此手指上报速率从80点/秒调整为vnow=a=60。If it is detected in step (3) that the number n of coordinate points received by the application layer within the time t is 32, and the touch screen terminal recognizes that the number f of fingers currently touching is 4, then the current reporting rate of each finger is 80 points / second, at this time, the set value n 1 is less than n, and it is necessary to reduce the number of coordinate points received by the application layer by reducing the reporting rate; through the calculation of step (4), a is 60, and the value of a is less than v at this time max , so the finger reporting rate is adjusted from 80 points/second to v now =a=60.

若在步骤(3)中检测到时间t内应用层收到的坐标点个数n为20,触摸屏终端识别当前正在触摸的手指个数f为2,则当前每个手指上报速率为40点/秒,此时设定值n1大于n,需要通过升高上报速率的方式来增加应用层收到的坐标点个数,以保证触摸屏的工作效率;通过步骤(4)计算得到a为120,此时满足a≥vmax,将手指是上报速率调整为vnow=60点/秒。If it is detected in step (3) that the number n of coordinate points received by the application layer within the time t is 20, and the touch screen terminal recognizes that the number f of fingers currently touching is 2, then the current reporting rate of each finger is 40 points/ Seconds, at this time the set value n 1 is greater than n, it is necessary to increase the number of coordinate points received by the application layer by increasing the reporting rate to ensure the working efficiency of the touch screen; through the calculation of step (4), a is 120, At this time, a≥v max is satisfied, and the finger reporting rate is adjusted to v now =60 points/second.

上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围之内。The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (6)

1.一种动态调整触摸屏上报速率的方法,其特征在于,包括以下步骤:1. A method for dynamically adjusting the reporting rate of the touch screen, characterized in that, comprising the following steps: (1)设定一个检测时间,根据触摸屏上单个手指上报速率的最初设置值vmax及触触摸屏同一时间所能识别的手指个数的最大值,获取检测时间内应用层收到的坐标点个数的阈值;(1) Set a detection time, according to the initial set value v max of the reporting rate of a single finger on the touch screen and the maximum number of fingers that can be recognized at the same time when touching the touch screen, obtain the coordinate points received by the application layer within the detection time number of thresholds; (2)根据步骤(1)中应用层收到的坐标点个数阈值设定一个小于阈值的设定值n1(2) According to the threshold of the number of coordinate points received by the application layer in step (1), set a set value n 1 smaller than the threshold; (3)在检测时间内,触摸屏终端识别当前正在触摸的手指个数;根据当前触摸屏单个手指的上报速率,触摸屏终端计算检测时间内应用层收到的坐标点个数n;(3) Within the detection time, the touch screen terminal identifies the number of fingers currently touching; according to the reporting rate of a single finger on the current touch screen, the touch screen terminal calculates the number n of coordinate points received by the application layer within the detection time; (4)将步骤(3)中检测时间内应用层收到的坐标点个数n与设定值n1进行比较:(4) Compare the number n of coordinate points received by the application layer within the detection time in step (3) with the set value n 1 : 若设定值n1大于n时,则降低当前触摸屏单个手指的上报速率;If the set value n1 is greater than n, then reduce the reporting rate of a single finger on the current touch screen; 若设定值n1小于n时,则升高当前触摸屏单个手指的上报速率;If the set value n1 is less than n, then increase the reporting rate of a single finger on the current touch screen; 使得调整后的单个手指上报速率调整为vnowMake the adjusted single-finger reporting rate adjusted to v now : vv nownow == aa ,, aa << vv maxmax vv maxmax ,, aa &GreaterEqual;&Greater Equal; vv maxmax ;; 其中a为:where a is: aa == nno 11 tftf ;; 其中t为检测时间,f为触摸屏终端识别当前正在触摸的手指个数。Where t is the detection time, and f is the number of currently touching fingers identified by the touch screen terminal. 2.根据权利要求1所述的动态调整触摸屏上报速率的方法,其特征在于,所述步骤(1)中获取的检测时间内应用层收到的坐标点个数的阈值nmax为:2. The method for dynamically adjusting the reporting rate of the touch screen according to claim 1, wherein the threshold value n max of the number of coordinate points received by the application layer within the detection time obtained in the step (1) is: nmax=vmax.fmax.t;n max = v max .f max .t; 其中vmax为触摸屏上单个手指的上报速率的最初设置值,即触摸屏的最大上报速率;所述fmax为触摸屏同一时间所能识别的手指个数的最大值,t为检测时间。Where v max is the initial set value of the reporting rate of a single finger on the touch screen, i.e. the maximum reporting rate of the touch screen; said f max is the maximum value of the number of fingers that the touch screen can recognize at the same time, and t is the detection time. 3.根据权利要求2所述的动态调整触摸屏上报速率的方法,其特征在于,所述步骤(3)中,在检测时间内触摸屏终端的应用层收到的坐标点个数n为:3. The method for dynamically adjusting the reporting rate of the touch screen according to claim 2, characterized in that, in the step (3), the number n of coordinate points received by the application layer of the touch screen terminal within the detection time is: n=v.f.t;n = v.f.t; 其中v为当前触摸屏单个手指的上报速率,f为触摸屏终端识别当前正在触摸的手指个数。Where v is the reporting rate of a single finger on the current touch screen, and f is the number of fingers currently being touched by the touch screen terminal. 4.根据权利要求3中所述的动态调整触摸屏上报速率的方法,其特征在于,所述检测时间t为0.1秒,所述触摸屏上报速率的最初设置值vmax为80点/秒,所述触摸屏同一时间所能识别的手指个数的最大值fmax为5个,则获取的检测时间t内应用层收到的坐标点个数的阈值nmax为40点。4. according to the method for dynamically adjusting touch-screen reporting rate described in claim 3, it is characterized in that, described detection time t is 0.1 second, and the initial setting value v max of described touch-screen reporting rate is 80 points/second, described The maximum number f max of the number of fingers that can be recognized by the touch screen at the same time is 5, then the threshold n max of the number of coordinate points received by the application layer within the acquired detection time t is 40 points. 5.根据权利要求4中所述的动态调整触摸屏上报速率的方法,其特征在于,所述设定值n1为24点。5. The method for dynamically adjusting the reporting rate of the touch screen according to claim 4, wherein the set value n1 is 24 points. 6.根据权利1所述的动态调整触摸屏上报速率的方法,其特征在于,所述触摸屏的上报速率通过触摸屏终端的上报寄存器来调整。6. The method for dynamically adjusting the report rate of the touch screen according to claim 1, wherein the report rate of the touch screen is adjusted through a report register of the touch screen terminal.
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