技术领域technical field
本发明涉及触摸屏驱动技术，特别是一种触摸屏驱动频率控制方法、装置及电子设备。The invention relates to touch screen drive technology, in particular to a touch screen drive frequency control method, device and electronic equipment.
背景技术Background technique
随着触摸屏的飞速发展，触摸屏已经成为必不可少的生活设备及工作设备。对触摸屏的工作产生影响的干扰类型主要有两种：显示模组干扰和共模干扰两种，简单说明如下With the rapid development of touch screens, touch screens have become an essential living and working device. There are two main types of interference that affect the operation of the touch screen: display module interference and common mode interference. The brief description is as follows
显示模组(LCM)干扰：在实际应用中，触摸屏通常是和显示模组一起共同使用。触摸屏的工作是由交流信号驱动，而显示模组(如液晶显示模组、发光二极管显示模组等)也存在各种交流信号，不同的交流信号的电场叠加在一起就会产生干扰信号。Display module (LCM) interference: In practical applications, the touch screen is usually used together with the display module. The work of the touch screen is driven by AC signals, and display modules (such as liquid crystal display modules, light-emitting diode display modules, etc.) also have various AC signals, and the electric fields of different AC signals are superimposed to generate interference signals.
共模干扰：具有触摸屏的电子终端通常使用开关充电器进行充电。当具有电容触摸屏的电子终端使用开关充电器充电时，如果开关充电器的开关频率和电容触摸屏的扫描频率一致，开关频率和扫描频率会产生共模干扰，共模干扰可以通过用户手指耦合到电容触摸屏上，导致电容触摸屏出现反映迟钝、报点错误或者不反应等异常状况，无法正常使用。Common mode interference: Electronic terminals with touch screens are usually charged with switching chargers. When an electronic terminal with a capacitive touch screen is charged with a switching charger, if the switching frequency of the switching charger is consistent with the scanning frequency of the capacitive touch screen, the switching frequency and scanning frequency will generate common-mode interference, which can be coupled to the capacitor through the user's finger On the touch screen, the capacitive touch screen has abnormal conditions such as slow response, wrong report or no response, and cannot be used normally.
由于触摸信号是很微弱的信号，这样，上述的各种类型的干扰都可能会造成触摸信号被环境噪声以及干扰信号淹没，无法正确识别触摸信号的后果。因此有效地克服显示模组干扰和共模干扰一直是业界关注的焦点问题。Since the touch signal is a very weak signal, the above-mentioned various types of interference may cause the touch signal to be submerged by environmental noise and interference signals, and the touch signal cannot be correctly identified. Therefore, effectively overcoming display module interference and common mode interference has always been a focus of attention in the industry.
现有技术中，避开显示模组干扰的一般作法为选择触摸屏的驱动频率，避开上述的干扰。In the prior art, a common way to avoid the interference of the display module is to select the driving frequency of the touch screen to avoid the above-mentioned interference.
发明人发现，现有技术的选择触摸屏的驱动频率，避开显示模组干扰的技术方案存在着计算量庞大，时间过长的缺陷，简要说明如下。The inventors found that the technical solution of selecting the driving frequency of the touch screen and avoiding the interference of the display module in the prior art has the disadvantages of a huge amount of calculation and too long time, and the brief description is as follows.
现有技术中，将触摸屏支持的所有驱动频率全部驱动一遍，然后记录每个驱动频率下的干扰信号的干扰强度，最后选择对应的干扰信号的干扰强度最小的驱动频率作为工作频率。In the prior art, all the driving frequencies supported by the touch screen are driven once, then the interference intensity of the interference signal at each driving frequency is recorded, and finally the driving frequency with the smallest interference intensity of the corresponding interference signal is selected as the working frequency.
然而触摸屏支持的驱动频率是连续的，导致该方法的计算量非常庞大，确定工作频率的工作时间过长。However, the driving frequency supported by the touch screen is continuous, resulting in a very large amount of calculation for this method, and the working time for determining the working frequency is too long.
发明内容Contents of the invention
本发明实施例的目的在于提供一种触摸屏驱动频率控制方法、装置及电子设备，降低确定触摸屏工作频率的时间，提高处理器的效率。The purpose of the embodiments of the present invention is to provide a touch screen driving frequency control method, device and electronic equipment, which can reduce the time for determining the touch screen operating frequency and improve the efficiency of the processor.
为实现上述目的，本发明实施例提供了一种触摸屏驱动频率控制方法，包括：In order to achieve the above purpose, an embodiment of the present invention provides a touch screen driving frequency control method, including:
干扰检测步骤，在触摸屏所支持的驱动频段中以一频率间隔进行干扰检测，获取一检测结果；The interference detection step is to perform interference detection at a frequency interval in the driving frequency band supported by the touch screen, and obtain a detection result;
频率间隔更新步骤，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，减小所述频率间隔后返回所述干扰检测步骤；其他信号在所述第一频率对触摸屏驱动信号的干扰满足预定要求；Frequency interval update step, when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band with the frequency interval, return to the interference detection step after reducing the frequency interval; The interference of the first frequency to the drive signal of the touch screen meets predetermined requirements;
第一设置步骤，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率时，设置所述第一频率为所述触摸屏的工作频率。The first setting step is to set the first frequency as the operating frequency of the touch screen when the detection result indicates that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval.
上述的触摸屏驱动频率控制方法，其中，还包括：The above method for controlling the driving frequency of the touch screen further includes:
第一选择步骤，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，判断是否继续减小所述频率间隔，获取判断结果，并在所述判断结果指示继续减小所述频率间隔时，进入频率间隔更新步骤，否则进入第二设置步骤；The first selection step, when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval, judge whether to continue to reduce the frequency interval, obtain the judgment result, and When the judgment result indicates that the frequency interval continues to be reduced, enter the frequency interval update step, otherwise enter the second setting step;
第二设置步骤，设置第二频率为所述触摸屏的工作频率；The second setting step is to set the second frequency as the operating frequency of the touch screen;
所述第二频率为所有驱动频段的已进行干扰检测的频率中，其他信号在所述第二频率对触摸屏驱动信号的干扰最低。The second frequency is among the frequencies for which interference detection has been performed in all driving frequency bands, and the interference of other signals on the driving signal of the touch screen is the lowest at the second frequency.
上述的触摸屏驱动频率控制方法，其中，所述第一选择步骤中，在当前的频率间隔小于预定频率更新门限或者频率间隔更新次数超过预定频率更新次数时，判断不再减小所述频率间隔。In the above touch screen driving frequency control method, wherein in the first selection step, when the current frequency interval is smaller than the predetermined frequency update threshold or the number of frequency interval updates exceeds the predetermined frequency update number, it is determined not to reduce the frequency interval.
上述的触摸屏驱动频率控制方法，其中，所述频率间隔更新步骤中，减小后的所述频率间隔为之前的频率间隔的一半。In the above touch screen driving frequency control method, wherein in the step of updating the frequency interval, the reduced frequency interval is half of the previous frequency interval.
上述的触摸屏驱动频率控制方法，其中，所述干扰检测步骤包括：The above method for controlling the driving frequency of the touch screen, wherein the interference detection step includes:
驱动步骤，在当前频率间隔下，以当前待检测频率驱动触摸屏；The driving step is to drive the touch screen with the current frequency to be detected under the current frequency interval;
检测步骤，执行干扰检测操作，得到当前待检测频率对应的干扰强度值；The detection step is to perform an interference detection operation to obtain an interference intensity value corresponding to the current frequency to be detected;
第二选择步骤，在所述干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果，进入第一设置步骤，在所述干扰强度值大于或等于预定干扰门限，进入第三选择步骤；In the second selection step, when the interference intensity value is less than a predetermined interference threshold, a detection result indicating that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval is obtained, and the first setting step is entered, in which If the interference intensity value is greater than or equal to the predetermined interference threshold, enter the third selection step;
第三选择步骤，在当前频率间隔下还有未检测的频率时，进入频率更新步骤，否则进入频率间隔更新步骤；The third selection step, when there are undetected frequencies under the current frequency interval, enter the frequency update step, otherwise enter the frequency interval update step;
频率更新步骤，将当前待检测频率更新为当前待检测频率和所述频率间隔的和值，返回驱动步骤。The frequency update step is to update the current frequency to be detected to the sum of the current frequency to be detected and the frequency interval, and return to the driving step.
上述的触摸屏驱动频率控制方法，其中，所述结果获取步骤中，对所述当前待检测频率进行多次干扰检测，得到多个所述干扰强度值，且所有干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果。In the above method for controlling the driving frequency of the touch screen, wherein, in the result obtaining step, multiple interference detections are performed on the current frequency to be detected to obtain a plurality of the interference intensity values, and when all the interference intensity values are less than the predetermined interference threshold, A detection result indicating that a first frequency exists in a set of frequencies selected from the driving frequency band at the frequency interval is obtained.
上述的触摸屏驱动频率控制方法，其中，所述第二选择步骤中，在第一次干扰检测操作得到的干扰强度值小于预定干扰门限时，继续返回驱动步骤，进行干扰检测，直至干扰强度值小于预定干扰门限的连续出现次数达到预定次数门限，则进入第一设置步骤，或者出现大于或等于预定干扰门限的干扰强度值，进入第三选择步骤。In the above touch screen driving frequency control method, wherein, in the second selection step, when the interference intensity value obtained by the first interference detection operation is less than the predetermined interference threshold, continue to return to the driving step and perform interference detection until the interference intensity value is less than If the number of consecutive occurrences of the predetermined interference threshold reaches the predetermined threshold, enter the first setting step, or if an interference intensity value greater than or equal to the predetermined interference threshold occurs, enter the third selection step.
为了更好地实现上述目的，本发明实施例还公开了一种触摸屏驱动频率控制装置，包括：In order to better achieve the above purpose, the embodiment of the present invention also discloses a touch screen driving frequency control device, including:
干扰检测模块，用于在触摸屏所支持的驱动频段中以一频率间隔进行干扰检测，获取一检测结果；The interference detection module is used to perform interference detection at a frequency interval in the driving frequency band supported by the touch screen, and obtain a detection result;
频率间隔更新模块，用于在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，减小所述频率间隔后触发所述干扰检测模块；其他信号在所述第一频率对触摸屏驱动信号的干扰满足预定要求；A frequency interval update module, configured to trigger the interference detection module after reducing the frequency interval when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval; other The interference of the signal on the touch screen driving signal at the first frequency meets a predetermined requirement;
第一设置模块，用于在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率时，设置所述第一频率为所述触摸屏的工作频率。A first setting module, configured to set the first frequency as the operating frequency of the touch screen when the detection result indicates that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval.
上述的触摸屏驱动频率控制装置，其中，还包括：The above touch screen drive frequency control device, which also includes:
第一选择模块，用于在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，判断是否继续减小所述频率间隔，获取判断结果，并在所述判断结果指示继续减小所述频率间隔时，触发频率间隔更新模块，否则触发第二设置模块；The first selection module is configured to determine whether to continue reducing the frequency interval when the detection result indicates that the first frequency does not exist in the frequency set selected from the driving frequency band at the frequency interval, obtain a judgment result, and When the judgment result indicates that the frequency interval continues to be reduced, trigger the frequency interval update module, otherwise trigger the second setting module;
第二设置模块，用于设置第二频率为所述触摸屏的工作频率；The second setting module is used to set the second frequency as the operating frequency of the touch screen;
所述第二频率为所有驱动频段的已进行干扰检测的频率中，其他信号在所述第二频率对触摸屏驱动信号的干扰最低。The second frequency is among the frequencies for which interference detection has been performed in all driving frequency bands, and the interference of other signals on the driving signal of the touch screen is the lowest at the second frequency.
上述的触摸屏驱动频率控制装置，其中，所述第一选择模块中，在当前的频率间隔小于预定频率更新门限或者频率间隔更新次数超过预定频率更新次数时，判断不再减小所述频率间隔。In the above touch screen driving frequency control device, wherein in the first selection module, when the current frequency interval is smaller than the predetermined frequency update threshold or the number of frequency interval updates exceeds the predetermined frequency update number, it is determined not to reduce the frequency interval.
上述的触摸屏驱动频率控制装置，其中，所述频率间隔更新模块中，减小后的所述频率间隔为之前的频率间隔的一半。In the above-mentioned touch screen driving frequency control device, in the frequency interval updating module, the reduced frequency interval is half of the previous frequency interval.
上述的触摸屏驱动频率控制装置，其中，所述干扰检测模块具体包括：The above touch screen drive frequency control device, wherein the interference detection module specifically includes:
驱动模块，用于在当前频率间隔下，以当前待检测频率驱动触摸屏；The drive module is used to drive the touch screen with the current frequency to be detected under the current frequency interval;
检测模块，用于执行干扰检测操作，得到当前待检测频率对应的干扰强度值；A detection module, configured to perform an interference detection operation, and obtain an interference intensity value corresponding to the current frequency to be detected;
第二选择模块，用于在所述干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果，触发第一设置模块，在所述干扰强度值大于或等于预定干扰门限，触发第三选择模块；The second selection module is configured to obtain a detection result indicating that the first frequency exists in the frequency set selected from the driving frequency band at the frequency interval when the interference intensity value is less than a predetermined interference threshold, and trigger the first setting module, When the interference intensity value is greater than or equal to a predetermined interference threshold, trigger a third selection module;
第三选择模块，用于在当前频率间隔下还有未检测的频率时，触发频率更新模块，否则触发频率间隔更新模块；The third selection module is used to trigger the frequency update module when there are undetected frequencies under the current frequency interval, otherwise trigger the frequency interval update module;
频率更新模块，用于将当前待检测频率更新为当前待检测频率和所述频率间隔的和值，触发驱动模块。A frequency updating module, configured to update the current frequency to be detected to the sum of the current frequency to be detected and the frequency interval, and trigger the driving module.
上述的触摸屏驱动频率控制装置，其中，所述结果获取模块中，对所述当前待检测频率进行多次干扰检测，得到多个所述干扰强度值，且所有干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果。In the above touch screen drive frequency control device, wherein, in the result acquisition module, multiple interference detections are performed on the current frequency to be detected to obtain a plurality of interference intensity values, and when all interference intensity values are less than a predetermined interference threshold, A detection result indicating that a first frequency exists in a set of frequencies selected from the driving frequency band at the frequency interval is obtained.
上述的触摸屏驱动频率控制装置，其中，所述第二选择模块中，在第一次干扰检测操作得到的干扰强度值小于预定干扰门限时，继续触发驱动模块，进行干扰检测，直至干扰强度值小于预定干扰门限的连续出现次数达到预定次数门限，则触发第一设置模块，或者出现大于或等于预定干扰门限的干扰强度值，触发第三选择模块。In the above touch screen driving frequency control device, wherein, in the second selection module, when the interference intensity value obtained by the first interference detection operation is less than the predetermined interference threshold, the driving module is continuously triggered to perform interference detection until the interference intensity value is less than When the number of consecutive occurrences of the predetermined interference threshold reaches the predetermined threshold, the first setting module is triggered, or if an interference intensity value greater than or equal to the predetermined interference threshold occurs, the third selection module is triggered.
为了更好地实现上述目的，本发明实施例还公开了一种电子设备，包括一触摸屏，所述电子设备还包括上述任意的触摸屏驱动频率控制装置。In order to better achieve the above object, the embodiment of the present invention also discloses an electronic device, which includes a touch screen, and the electronic device further includes any of the above-mentioned drive frequency control devices for the touch screen.
本发明实施例具有如下有益效果中的至少一个：Embodiments of the present invention have at least one of the following beneficial effects:
本发明实施例的触摸屏驱动频率控制方法、装置及电子设备中，只有在以当前的频率间隔无法找到干扰满足预定要求的工作频率时，才降低频率间隔进行更加精确的查找，因此能够减少频率检测量，进而降低确定触摸屏工作频率的时间，提高了处理器的效率。In the touch screen driving frequency control method, device, and electronic equipment of the embodiments of the present invention, only when the current frequency interval cannot find an operating frequency whose interference meets the predetermined requirements, the frequency interval is reduced to perform a more accurate search, thereby reducing frequency detection. The amount, thereby reducing the time to determine the operating frequency of the touch screen, improves the efficiency of the processor.
同时，本发明具体实施例中，只要求找到干扰满足预定要求的工作频率，使得触摸屏能够正常工作，而并不一定需要找到干扰最小的频率，因此进一步减少了频率检测量，进而降低确定触摸屏工作频率的时间，提高了处理器的效率。At the same time, in the specific embodiments of the present invention, it is only required to find the operating frequency whose interference meets the predetermined requirements, so that the touch screen can work normally, but does not necessarily need to find the frequency with the least interference, so the amount of frequency detection is further reduced, and then the frequency of determining the operation of the touch screen is reduced. frequency time, improving the efficiency of the processor.
附图说明Description of drawings
图1表示本发明实施例的一种触摸屏驱动频率控制方法的流程示意图；FIG. 1 shows a schematic flow chart of a method for controlling the driving frequency of a touch screen according to an embodiment of the present invention;
图2表示本发明实施例的另一种触摸屏驱动频率控制方法的流程示意图；FIG. 2 shows a schematic flow chart of another touch screen driving frequency control method according to an embodiment of the present invention;
图3表示本发明实施例的再一种触摸屏驱动频率控制方法的流程示意图；FIG. 3 shows a schematic flow chart of another touch screen driving frequency control method according to an embodiment of the present invention;
图4表示本发明实施例的一种触摸屏驱动频率控制装置的结构示意图；4 shows a schematic structural diagram of a touch screen driving frequency control device according to an embodiment of the present invention;
图5表示本发明实施例的另一种触摸屏驱动频率控制装置的结构示意图；FIG. 5 shows a schematic structural diagram of another touch screen driving frequency control device according to an embodiment of the present invention;
图6表示本发明实施例的再一种触摸屏驱动频率控制装置的结构示意图。FIG. 6 is a schematic structural diagram of another device for controlling the driving frequency of the touch screen according to the embodiment of the present invention.
具体实施方式Detailed ways
本发明实施例的触摸屏驱动频率控制方法、装置及电子设备中，只有在以当前的频率间隔无法找到干扰满足预定要求的工作频率时，才降低频率间隔进行更加精确的查找，因此能够减少频率检测量，进而降低确定触摸屏工作频率的时间，提高了处理器的效率。同时，本发明具体实施例中，只要求找到干扰满足预定要求的工作频率，使得触摸屏能够正常工作，而并不一定需要找到干扰最小的频率，因此进一步减少了频率检测量，进而降低确定触摸屏工作频率的时间，提高了处理器的效率。In the touch screen driving frequency control method, device, and electronic equipment of the embodiments of the present invention, only when the current frequency interval cannot find an operating frequency whose interference meets the predetermined requirements, the frequency interval is reduced to perform a more accurate search, thereby reducing frequency detection. The amount, thereby reducing the time to determine the operating frequency of the touch screen, improves the efficiency of the processor. At the same time, in the specific embodiments of the present invention, it is only required to find the operating frequency whose interference meets the predetermined requirements, so that the touch screen can work normally, but does not necessarily need to find the frequency with the least interference, so the amount of frequency detection is further reduced, and then the frequency of determining the operation of the touch screen is reduced. frequency time, improving the efficiency of the processor.
实施例一Embodiment one
为实现上述目的，本发明实施例提供了一种触摸屏驱动频率控制方法，如图1所示，包括：In order to achieve the above purpose, an embodiment of the present invention provides a method for controlling the driving frequency of a touch screen, as shown in FIG. 1 , including:
干扰检测步骤101，在触摸屏所支持的驱动频段中以一频率间隔进行干扰检测，获取一检测结果；Interference detection step 101, performing interference detection at a frequency interval in the driving frequency band supported by the touch screen, and obtaining a detection result;
频率间隔更新步骤102，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，减小所述频率间隔后返回所述干扰检测步骤；其他信号在所述第一频率对触摸屏驱动信号的干扰满足预定要求；Frequency interval update step 102, when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval, return to the interference detection step after reducing the frequency interval; other signals The interference to the touch screen driving signal at the first frequency meets a predetermined requirement;
第一设置步骤103，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率时，设置所述第一频率为所述触摸屏的工作频率。The first setting step 103 is to set the first frequency as the working frequency of the touch screen when the detection result indicates that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval.
本发明实施例能够减少频率检测量，进而降低确定触摸屏工作频率的时间，提高了处理器的效率，说明如下。The embodiments of the present invention can reduce the amount of frequency detection, thereby reducing the time for determining the operating frequency of the touch screen, and improving the efficiency of the processor, as described below.
本发明实施例中，是以一频率间隔进行干扰检测，而干扰检测的结果是获取在该频率，其他信号对触摸屏驱动信号的干扰满足预定要求(一个常见的例子是使得触摸屏能够正常工作的频率，但并不以此作为限定)，而不是去获取干扰最小的频率(获取干扰最小的频率必须对所有频率进行干扰检测)，因此其在保证触摸屏能够正常工作的情况下减少了频率检测量，而频率检测量的减少必然能够降低确定触摸屏工作频率的时间，而频率检测量的减少也减少了处理器用于干扰检测的资源，提高了处理器的效率。In the embodiment of the present invention, the interference detection is performed at a frequency interval, and the result of the interference detection is that at this frequency, the interference of other signals to the touch screen drive signal meets the predetermined requirements (a common example is the frequency at which the touch screen can work normally) , but not as a limitation), instead of obtaining the frequency with the least interference (obtaining the frequency with the least interference must perform interference detection on all frequencies), so it reduces the amount of frequency detection while ensuring that the touch screen can work normally. The reduction of the frequency detection amount can certainly reduce the time for determining the operating frequency of the touch screen, and the reduction of the frequency detection amount also reduces the resources used by the processor for interference detection and improves the efficiency of the processor.
本发明实施例中，只有在以当前的频率间隔无法找到干扰满足预定要求的工作频率时，才降低频率间隔进行更加精确的查找。同时由于本发明实施例的要求是找到满足一定要求的频率。因此，利用本发明实施例的方法在很大程度通过较大的频率间隔即可找到满足要求的频率，因此相对于现有技术的对所有频率进行干扰检测来获取工作频率的方式而言能够减少频率检测量，而频率检测量的减少必然能够降低确定触摸屏工作频率的时间，而频率检测量的减少也减少了处理器用于干扰检测的资源，提高了处理器的效率。In the embodiment of the present invention, only when the current frequency interval cannot find an operating frequency whose interference meets the predetermined requirement, the frequency interval is reduced for more precise search. At the same time, the requirement of the embodiment of the present invention is to find a frequency that satisfies certain requirements. Therefore, using the method of the embodiment of the present invention can find a frequency that meets the requirements to a large extent through a relatively large frequency interval, so compared with the prior art that performs interference detection on all frequencies to obtain the operating frequency, it can reduce The amount of frequency detection, and the reduction of the frequency detection amount will inevitably reduce the time to determine the operating frequency of the touch screen, and the reduction of the frequency detection amount also reduces the resources used by the processor for interference detection and improves the efficiency of the processor.
实施例二Embodiment two
本发明实施例一的方法能够适用于绝大部分的场景，但当用户处于非常恶劣的电磁环境中时，此时有可能在触摸屏的驱动频段内的所有频率上都存在较大的干扰。此时如果无限制的降低频率间隔去进行干扰检测，最终可能还是无法找到使得触摸屏能够正常工作的频率。The method in Embodiment 1 of the present invention can be applied to most scenarios, but when the user is in a very harsh electromagnetic environment, there may be relatively large interference at all frequencies within the driving frequency band of the touch screen. At this time, if the frequency interval is reduced without limit to perform interference detection, the frequency that enables the touch screen to work normally may still not be found in the end.
上述情况下，继续降低频率间隔就成为了一种无谓的行为，甚至有可能导致死循环的发生，为了避免上述无谓行为的发生，如图2所示，本发明实施例二的触摸屏驱动频率控制方法包括：Under the above circumstances, continuing to reduce the frequency interval becomes a meaningless behavior, which may even lead to the occurrence of an infinite loop. In order to avoid the occurrence of the above unnecessary behavior, as shown in FIG. Methods include:
干扰检测步骤101，在触摸屏所支持的驱动频段中以一频率间隔进行干扰检测，获取一检测结果；Interference detection step 101, performing interference detection at a frequency interval in the driving frequency band supported by the touch screen, and obtaining a detection result;
第一选择步骤201，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，判断是否继续减小所述频率间隔，获取判断结果，并在所述判断结果指示继续减小所述频率间隔时，进入频率间隔更新步骤102，否则进入第二设置步骤202；The first selection step 201, when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval, judge whether to continue to reduce the frequency interval, obtain the judgment result, and When the judgment result indicates that the frequency interval continues to be reduced, enter the frequency interval update step 102, otherwise enter the second setting step 202;
第二设置步骤202，在所述判断结果指示不再减小所述频率间隔时，设置第二频率为所述触摸屏的工作频率；In the second setting step 202, when the judgment result indicates that the frequency interval is no longer to be reduced, set the second frequency as the working frequency of the touch screen;
所述第二频率为所有驱动频段的已进行干扰检测的频率中，其他信号在所述第二频率对触摸屏驱动信号的干扰最低。The second frequency is among the frequencies for which interference detection has been performed in all driving frequency bands, and the interference of other signals on the driving signal of the touch screen is the lowest at the second frequency.
频率间隔更新步骤102，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，减小所述频率间隔后返回所述干扰检测步骤101；其他信号在所述第一频率对触摸屏驱动信号的干扰满足预定要求；Frequency interval update step 102, when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval, return to the interference detection step 101 after reducing the frequency interval; other The interference of the signal on the touch screen driving signal at the first frequency meets a predetermined requirement;
第一设置步骤103，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率时，设置所述第一频率为所述触摸屏的工作频率。The first setting step 103 is to set the first frequency as the working frequency of the touch screen when the detection result indicates that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval.
通过上述第一选择步骤的设置，使得在判断出不再继续减小所述频率间隔时，即使当前还没有找到满足要求的频率，也会直接在所有驱动频段的已进行干扰检测的频率中，选择其他信号对触摸屏驱动信号的干扰最低的频率，避免了过长的工作频率选择时间，也避免应用陷入死循环。Through the setting of the above-mentioned first selection step, when it is judged that the frequency interval is no longer to be reduced, even if no frequency meeting the requirements is currently found, it will be directly among the frequencies for which interference detection has been performed in all driving frequency bands, Select the frequency with the lowest interference of other signals to the touch screen driving signal, avoiding too long selection time of the working frequency, and avoiding the application from falling into an infinite loop.
在本发明的具体实施例中，所述第一选择步骤中，在当前的频率间隔小于预定频率更新门限或者频率间隔更新次数超过预定频率更新次数时，判断不再减小所述频率间隔。In a specific embodiment of the present invention, in the first selection step, when the current frequency interval is smaller than the predetermined frequency update threshold or the number of frequency interval updates exceeds the predetermined frequency update number, it is judged that the frequency interval will not be reduced.
而在本发明具体实施例中，所述频率间隔更新步骤中，减小后的所述频率间隔为之前的频率间隔的一半。However, in a specific embodiment of the present invention, in the frequency interval updating step, the reduced frequency interval is half of the previous frequency interval.
实施例三Embodiment three
本发明具体实施例中，首先要进行干扰检测，在触摸屏所支持的驱动频段中以一频率间隔进行干扰检测，获取一检测结果。而该干扰检测可以通过多种方式实现，以下就本发明实施例的一种方式说明如下。In a specific embodiment of the present invention, interference detection is first performed, and interference detection is performed at a frequency interval in the driving frequency band supported by the touch screen to obtain a detection result. The interference detection can be implemented in multiple ways, and one way in the embodiment of the present invention will be described below.
如图3所示，本发明实施例三的触摸屏驱动频率控制方法包括：As shown in FIG. 3 , the method for controlling the driving frequency of the touch screen according to Embodiment 3 of the present invention includes:
驱动步骤1011，在当前频率间隔下，以当前待检测频率驱动触摸屏；Driving step 1011, under the current frequency interval, drive the touch screen with the current frequency to be detected;
检测步骤1012，执行干扰检测操作，得到当前待检测频率对应的干扰强度值；Detection step 1012, performing an interference detection operation to obtain an interference intensity value corresponding to the current frequency to be detected;
第二选择步骤1013，在所述干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果，进入步骤103，在所述干扰强度值大于或等于预定干扰门限，进入第三选择步骤1014；In the second selection step 1013, when the interference intensity value is less than a predetermined interference threshold, a detection result indicating that the first frequency exists in the frequency set selected from the driving frequency band at the frequency interval is obtained, and the step 103 is entered, and the The interference intensity value is greater than or equal to the predetermined interference threshold, enter the third selection step 1014;
第三选择步骤1014，在当前频率间隔下还有未检测的频率时，进入频率更新步骤1015，否则进入步骤102；The third selection step 1014, when there are undetected frequencies under the current frequency interval, enter the frequency update step 1015, otherwise enter the step 102;
频率更新步骤1015，将当前待检测频率更新为当前待检测频率和所述频率间隔的和值，返回步骤1011；Frequency updating step 1015, updating the current frequency to be detected to the sum of the current frequency to be detected and the frequency interval, returning to step 1011;
频率间隔更新步骤102，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，减小所述频率间隔后返回所述驱动步骤1011；其他信号在所述第一频率对触摸屏驱动信号的干扰满足预定要求；Frequency interval updating step 102, when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval, return to the driving step 1011 after reducing the frequency interval; other signals The interference to the touch screen driving signal at the first frequency meets a predetermined requirement;
第一设置步骤103，在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率时，设置所述第一频率为所述触摸屏的工作频率。The first setting step 103 is to set the first frequency as the working frequency of the touch screen when the detection result indicates that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval.
当然，应当理解的是，上述的步骤1014中，在当前频率间隔没有未检测的频率时，也可以进入图2中的步骤201，在此不再继续描述。Of course, it should be understood that in the above step 1014, when there is no undetected frequency in the current frequency interval, the process may also enter into step 201 in FIG. 2 , and no further description is given here.
本发明实施三的技术方案中，对每一个频率是先执行驱动和干扰检测，然后依据干扰检测结果判断当前待检测的频率是否为满足预定要求的频率，如果是则直接输出。这种方式不是在当前频率间隔下完成所有的驱动和检测后再判断，因此能够尽早发现第一频率，进一步降低了频率检测量，进而降低确定触摸屏工作频率的时间，提高了处理器的效率。In the technical solution of Embodiment 3 of the present invention, first perform driving and interference detection for each frequency, and then judge whether the current frequency to be detected meets the predetermined requirements according to the interference detection results, and if so, directly output. This method does not judge after completing all the driving and detection at the current frequency interval, so the first frequency can be found as early as possible, further reducing the amount of frequency detection, thereby reducing the time for determining the operating frequency of the touch screen, and improving the efficiency of the processor.
在本发明具体实施例中，针对当前待检测频率进行多次检测，得到多个干扰强度值，只有在所有干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果，提高了干扰判断的准确度。In a specific embodiment of the present invention, multiple detections are performed on the current frequency to be detected to obtain multiple interference intensity values, and only when all interference intensity values are less than a predetermined interference threshold, an instruction is obtained to select from the driving frequency band at the frequency interval The detection result of the first frequency exists in the frequency set, which improves the accuracy of interference judgment.
而为了提高干扰检测的效率，针对当前待检测频率进行多次检测的条件为，之前得到的干扰强度值小于预定干扰门限，此时才进行了干扰检测的检验，提高了干扰检测的针对性，提高了干扰检测的效率。In order to improve the efficiency of interference detection, the condition for performing multiple detections on the current frequency to be detected is that the interference intensity value obtained before is less than the predetermined interference threshold, and at this time the inspection of interference detection is carried out, which improves the pertinence of interference detection. The efficiency of interference detection is improved.
即本发明具体实施例中，所述第二选择步骤中，在第一次干扰检测操作得到的干扰强度值小于预定干扰门限时，继续返回驱动步骤，进行干扰检测，直至干扰强度值小于预定干扰门限的连续出现次数达到预定次数门限，则进入第一设置步骤，或者出现大于或等于预定干扰门限的干扰强度值，进入第三选择步骤。That is, in the specific embodiment of the present invention, in the second selection step, when the interference intensity value obtained by the first interference detection operation is less than the predetermined interference threshold, continue to return to the driving step and perform interference detection until the interference intensity value is less than the predetermined interference threshold. If the number of consecutive occurrences of the threshold reaches the predetermined threshold, enter the first setting step, or if an interference intensity value greater than or equal to the predetermined interference threshold occurs, enter the third selection step.
实施例四Embodiment four
为了更好地实现上述目的，本发明实施例还公开了一种触摸屏驱动频率控制装置，如图4所示，包括：In order to better achieve the above purpose, the embodiment of the present invention also discloses a touch screen drive frequency control device, as shown in Figure 4, including:
干扰检测模块，用于在触摸屏所支持的驱动频段中以一频率间隔进行干扰检测，获取一检测结果；The interference detection module is used to perform interference detection at a frequency interval in the driving frequency band supported by the touch screen, and obtain a detection result;
频率间隔更新模块，用于在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，减小所述频率间隔后触发所述干扰检测模块；其他信号在所述第一频率对触摸屏驱动信号的干扰满足预定要求；A frequency interval update module, configured to trigger the interference detection module after reducing the frequency interval when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval; other The interference of the signal on the touch screen driving signal at the first frequency meets a predetermined requirement;
第一设置模块，用于在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率时，设置所述第一频率为所述触摸屏的工作频率。A first setting module, configured to set the first frequency as the operating frequency of the touch screen when the detection result indicates that there is a first frequency in the frequency set selected from the driving frequency band at the frequency interval.
实施例五Embodiment five
为了更好地实现上述目的，本发明实施例还公开了一种触摸屏驱动频率控制装置，如图5所示，包括：In order to better achieve the above purpose, the embodiment of the present invention also discloses a touch screen drive frequency control device, as shown in Figure 5, including:
判断模块，用于在所述检测结果指示以所述频率间隔从所述驱动频段选取的频率集合中不存在第一频率时，判断是否继续减小所述频率间隔，获取判断结果；A judging module, configured to judge whether to continue reducing the frequency interval when the detection result indicates that there is no first frequency in the frequency set selected from the driving frequency band at the frequency interval, and obtain a judgment result;
触发模块，用于在所述判断结果指示继续减小所述频率间隔时，触发所述频率间隔更新模块；A trigger module, configured to trigger the frequency interval update module when the judgment result indicates that the frequency interval continues to be reduced;
第二设置步骤，在所述判断结果指示不再减小所述频率间隔时，设置第二频率为所述触摸屏的工作频率；A second setting step, when the judgment result indicates that the frequency interval is no longer to be reduced, setting the second frequency as the operating frequency of the touch screen;
所述第二频率为所有驱动频段的已进行干扰检测的频率中，其他信号在所述第二频率对触摸屏驱动信号的干扰最低。The second frequency is among the frequencies for which interference detection has been performed in all driving frequency bands, and the interference of other signals on the driving signal of the touch screen is the lowest at the second frequency.
上述的触摸屏驱动频率控制装置，其中，所述判断模块中，在当前的频率间隔小于预定频率更新门限或者频率间隔更新次数超过预定频率更新次数时，判断不再减小所述频率间隔。In the above touch screen drive frequency control device, wherein in the judging module, when the current frequency interval is smaller than the predetermined frequency update threshold or the number of frequency interval updates exceeds the predetermined frequency update number, it is judged not to reduce the frequency interval.
上述的触摸屏驱动频率控制装置，其中，所述频率间隔更新模块中，减小后的所述频率间隔为之前的频率间隔的一半。In the above-mentioned touch screen driving frequency control device, in the frequency interval updating module, the reduced frequency interval is half of the previous frequency interval.
实施例六Embodiment six
为了更好地实现上述目的，本发明实施例还公开了一种触摸屏驱动频率控制装置，如图6所示，包括：In order to better achieve the above purpose, the embodiment of the present invention also discloses a touch screen drive frequency control device, as shown in Figure 6, including:
驱动模块，用于在当前频率间隔下，以当前待检测频率驱动触摸屏；The drive module is used to drive the touch screen with the current frequency to be detected under the current frequency interval;
检测模块，用于执行干扰检测操作，得到当前待检测频率对应的干扰强度值；A detection module, configured to perform an interference detection operation, and obtain an interference intensity value corresponding to the current frequency to be detected;
第二选择模块，用于在所述干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果，触发第一设置模块，在所述干扰强度值大于或等于预定干扰门限，触发第三选择模块；The second selection module is configured to obtain a detection result indicating that the first frequency exists in the frequency set selected from the driving frequency band at the frequency interval when the interference intensity value is less than a predetermined interference threshold, and trigger the first setting module, When the interference intensity value is greater than or equal to a predetermined interference threshold, trigger a third selection module;
第三选择模块，用于在当前频率间隔下还有未检测的频率时，触发频率更新模块，否则触发频率间隔更新模块；The third selection module is used to trigger the frequency update module when there are undetected frequencies under the current frequency interval, otherwise trigger the frequency interval update module;
频率更新模块，用于将当前待检测频率更新为当前待检测频率和所述频率间隔的和值，触发驱动模块。A frequency updating module, configured to update the current frequency to be detected to the sum of the current frequency to be detected and the frequency interval, and trigger the driving module.
上述的触摸屏驱动频率控制装置，其中，所述结果获取模块中，对所述当前待检测频率进行多次干扰检测，得到多个所述干扰强度值，且所有干扰强度值小于预定干扰门限时，得到指示以所述频率间隔从所述驱动频段选取的频率集合中存在第一频率的检测结果。In the above touch screen drive frequency control device, wherein, in the result acquisition module, multiple interference detections are performed on the current frequency to be detected to obtain a plurality of interference intensity values, and when all interference intensity values are less than a predetermined interference threshold, A detection result indicating that a first frequency exists in a set of frequencies selected from the driving frequency band at the frequency interval is obtained.
上述的触摸屏驱动频率控制装置，其中，所述第二选择模块中，在第一次干扰检测操作得到的干扰强度值小于预定干扰门限时，继续触发驱动模块，进行干扰检测，直至干扰强度值小于预定干扰门限的连续出现次数达到预定次数门限，则触发第一设置模块，或者出现大于或等于预定干扰门限的干扰强度值，触发第三选择模块。In the above touch screen driving frequency control device, wherein, in the second selection module, when the interference intensity value obtained by the first interference detection operation is less than the predetermined interference threshold, the driving module is continuously triggered to perform interference detection until the interference intensity value is less than When the number of consecutive occurrences of the predetermined interference threshold reaches the predetermined threshold, the first setting module is triggered, or if an interference intensity value greater than or equal to the predetermined interference threshold occurs, the third selection module is triggered.
为了更好地实现上述目的，本发明实施例还公开了一种电子设备，包括一触摸屏，所述电子设备还包括上述任意的触摸屏驱动频率控制装置。In order to better achieve the above object, the embodiment of the present invention also discloses an electronic device, which includes a touch screen, and the electronic device further includes any of the touch screen drive frequency control devices described above.
本发明实施例中，模块可以用软件实现，以便由各种类型的处理器执行。举例来说，一个标识的可执行代码模块可以包括计算机指令的一个或多个物理或者逻辑块，举例来说，其可以被构建为对象、过程或函数。尽管如此，所标识模块的可执行代码无需物理地位于一起，而是可以包括存储在不同位里上的不同的指令，当这些指令逻辑上结合在一起时，其构成模块并且实现该模块的规定目的。In the embodiments of the present invention, the modules may be implemented by software so as to be executed by various types of processors. An identified module of executable code may, by way of illustration, comprise one or more physical or logical blocks of computer instructions which may, for example, be structured as an object, procedure, or function. Notwithstanding, the executable code of an identified module need not be physically located together, but may include distinct instructions stored in different bits which, when logically combined, constitute the module and implement the specified Purpose.
实际上，可执行代码模块可以是单条指令或者是许多条指令，并且甚至可以分布在多个不同的代码段上，分布在不同程序当中，以及跨越多个存储器设备分布。同样地，操作数据可以在模块内被识别，并且可以依照任何适当的形式实现并且被组织在任何适当类型的数据结构内。所述操作数据可以作为单个数据集被收集，或者可以分布在不同位置上(包括在不同存储设备上)，并且至少部分地可以仅作为电子信号存在于系统或网络上。Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs and across multiple memory devices. Likewise, operational data may be identified within modules, and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed in different locations (including on different storage devices), and may exist, at least in part, only as electronic signals on a system or network.
在模块可以利用软件实现时，考虑到现有硬件工艺的水平，所以可以以软件实现的模块，在不考虑成本的情况下，本领域技术人员都可以搭建对应的硬件电路来实现对应的功能，所述硬件电路包括常规的超大规模集成(VLSI)电路或者门阵列以及诸如逻辑芯片、晶体管之类的现有半导体或者是其它分立的元件。模块还可以用可编程硬件设备，诸如现场可编程门阵列、可编程阵列逻辑、可编程逻辑设备等实现。When the module can be realized by software, considering the level of the existing hardware technology, the module that can be realized by software, regardless of the cost, those skilled in the art can build the corresponding hardware circuit to realize the corresponding function. The hardware circuit includes conventional very large scale integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.
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| CN105204684Atrue CN105204684A (en) | 2015-12-30 |
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| CN201510603817.2AExpired - Fee RelatedCN105204684B (en) | 2015-09-21 | 2015-09-21 | Touch-screen driving frequency control method, device and electronic equipment |
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