CN106339168A - Screen control method and device - Google Patents

Abstract

The present disclosure relates to a screen control method and device, and the method includes: when the Hall sensor on the electronic device detects a change in the Hall potential, judging whether the environment where the electronic device is located is disturbed by an interfering magnetic field; When the environment is disturbed by an interfering magnetic field, the distance sensor detects the distance of the protective cover worn by the electronic device relative to the screen of the electronic device; judges whether to trigger a bright screen event or an off screen event according to the detected distance, and the bright screen The event is an event for turning on the screen of the electronic device, and the event for turning off the screen is an event for turning off the screen of the electronic device. By combining the Hall sensor with the distance sensor, it is possible to avoid misjudgment caused by judging only based on the output result of the Hall sensor when being interfered by an interfering magnetic field, thereby avoiding bad user experience caused by misjudgment.

Description

Screen control method and device

technical field

The present application relates to the field of electronic technology, in particular to a screen control method and device.

Background technique

With the development of science and technology, electronic devices such as mobile phones and tablet computers are becoming more and more popular among users, and there are more and more occasions for users to use electronic devices. In order to protect the electronic equipment from being damaged, the electronic equipment may be equipped with a protective case. By installing Hall sensors on the motherboard of the electronic device and installing magnets on the protective cover, the electronic device can be combined with the protective cover to control the screen of the electronic device to turn on or off. For example, when the protective cover is closed, the magnet on the protective cover causes a potential change inside the Hall sensor, which triggers a screen-off event, thereby turning off the screen, and when the protective cover is opened, triggers a screen-on event, thereby turning on the screen.

However, when there is an interfering magnetic field near the electronic device, the detection result of the Hall sensor is used to control the screen to be on or off, and the control will be inaccurate.

Contents of the invention

In order to overcome the problems existing in the related technologies, the present disclosure provides a screen control method and device.

According to a first aspect of an embodiment of the present disclosure, there is provided a screen control method, the method comprising:

When the Hall sensor on the electronic device detects a change in the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by an interfering magnetic field;

When it is determined that the environment in which the electronic device is located is disturbed by an interfering magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device;

Determine whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device .

In an example, the judging whether the environment where the electronic device is located is disturbed by a disturbing magnetic field includes:

According to the magnetic field strength detected by the magnetic field sensor arranged on the protective cover, it is judged whether the environment where the electronic device is located is disturbed by a disturbing magnetic field, wherein, during the closing or opening process of the protective cover, the magnetic field sensor and the protective cover The relative position of the upper magnet is fixed.

In an example, the judging whether the environment where the electronic device is located is disturbed by a disturbing magnetic field includes:

Obtaining the magnetic field strength value and/or the magnetic field strength direction from a magnetic field sensor disposed on the electronic device;

According to the acquired magnetic field strength value and/or magnetic field strength direction, it is judged whether the environment where the electronic device is located is disturbed by a disturbing magnetic field.

In an example, the judging whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the obtained magnetic field strength value and/or magnetic field strength direction includes at least one of the following methods:

When the obtained magnetic field strength value is greater than the preset magnetic field strength threshold, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field;

When the acquired magnetic field strength direction is different from the preset magnetic field strength direction, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, and the preset magnetic field strength direction is a magnetic field direction detected by the magnetic field sensor without being affected by the disturbing magnetic field.

In one example, the preset magnetic field strength threshold is determined according to the maximum magnetic field strength value, and the maximum magnetic field strength value is the magnetic field strength value detected by the magnetic field sensor in the closed state of the protective cover without being affected by a disturbing magnetic field ;

Or, the preset magnetic field strength threshold is determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is when the magnetic field sensor is in the closed state of the protective cover without being affected by a disturbing magnetic field The magnetic field strength value detected at the time, the first magnetic field strength critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a bright screen event without being affected by an interfering magnetic field;

Or, the preset magnetic field strength threshold is determined according to the second magnetic field strength critical value, the direction of the preset magnetic field strength is opposite to the direction of the second magnetic field strength critical value, and the second magnetic field strength critical value is not affected by the disturbance magnetic field The magnetic field strength value detected by the magnetic field sensor when the lower Hall sensor triggers the screen-off event.

In one example, the method further includes:

When it is determined that the environment in which the electronic device is located is not disturbed by the interfering magnetic field, it is judged by the output result of the Hall sensor whether to trigger a screen-on event or a screen-off event;

Or, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, simultaneously judge whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance.

According to a second aspect of an embodiment of the present disclosure, there is provided a screen control device, the device comprising:

The interference magnetic field judging module is configured to judge whether the environment where the electronic device is located is disturbed by the interference magnetic field when the Hall sensor on the electronic device detects a change in the Hall potential;

The distance acquisition module is configured to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device through a distance sensor when it is determined that the environment where the electronic device is located is disturbed by an interfering magnetic field;

The event trigger module is configured to judge whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns the electronic device The event that the screen of the device turns off.

In one example, the interference magnetic field judging module includes:

The first judging submodule is configured to judge whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the magnetic field strength detected by the magnetic field sensor arranged on the protective cover, wherein, during the closing or opening process of the protective cover, The relative position of the magnetic field sensor and the magnet on the protective cover is fixed.

In one example, the interference magnetic field judging module includes:

The parameter acquisition submodule is configured to acquire the magnetic field strength value and/or the magnetic field strength direction from the magnetic field sensor provided on the electronic device;

The second judging submodule is configured to judge whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the acquired magnetic field strength value and/or magnetic field strength direction.

In one example, the second judging submodule includes at least one of the following submodules:

The strength value judging sub-module is configured to determine that the environment where the electronic device is located is disturbed by a disturbing magnetic field when the obtained magnetic field strength value is greater than a preset magnetic field strength threshold;

The direction judging submodule is configured to determine that the environment where the electronic device is located is disturbed by a disturbing magnetic field when the acquired magnetic field strength direction is different from the preset magnetic field strength direction, and the preset magnetic field strength direction is not affected by the disturbing magnetic field as described below The direction of the magnetic field detected by the magnetic field sensor.

In one example, the preset magnetic field strength threshold is determined according to the maximum magnetic field strength value, and the maximum magnetic field strength value is the magnetic field strength value detected by the magnetic field sensor in the closed state of the protective cover without being affected by a disturbing magnetic field ;

Or, the preset magnetic field strength threshold is determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is when the magnetic field sensor is in the closed state of the protective cover without being affected by a disturbing magnetic field The magnetic field strength value detected at the time, the first magnetic field strength critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a bright screen event without being affected by an interfering magnetic field;

Or, the preset magnetic field strength threshold is determined according to the second magnetic field strength critical value, the direction of the preset magnetic field strength is opposite to the direction of the second magnetic field strength critical value, and the second magnetic field strength critical value is not affected by the disturbance magnetic field The magnetic field strength value detected by the magnetic field sensor when the lower Hall sensor triggers the screen-off event.

In one example, the event trigger module is further configured to:

When it is determined that the environment in which the electronic device is located is not disturbed by the interfering magnetic field, it is judged by the output result of the Hall sensor whether to trigger a screen-on event or a screen-off event;

Or, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, simultaneously judge whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance.

According to a third aspect of the embodiments of the present disclosure, there is provided a screen control device, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured as:

When the Hall sensor on the electronic device detects a change in the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by an interfering magnetic field;

When it is determined that the environment in which the electronic device is located is disturbed by an interfering magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device;

Determine whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device .

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the present disclosure, when the Hall sensor on the electronic device detects the change of the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by the interference magnetic field, and when it is determined that the environment where the electronic device is located is interfered by the interference magnetic field, the distance sensor is used to detect the electronic device The distance between the worn protective case and the screen of the electronic device is determined according to the detected distance whether to trigger a screen-on event or a screen-off event. By combining the Hall sensor with the distance sensor, it is possible to avoid misjudgment and miscontrol caused by judging only by the output result of the Hall sensor when it is interfered by an interfering magnetic field, thereby avoiding misjudgment and bringing bad results to users. experience.

The present disclosure can obtain the magnetic field strength from the magnetic field sensor provided on the protective cover, and judge whether the environment where the electronic device is located is disturbed by the disturbing magnetic field through the obtained magnetic field strength, so as to automatically judge whether it is currently disturbed by the disturbing magnetic field without manual participation.

In the present disclosure, it is possible to judge whether the environment where the electronic device is located is disturbed by the interference magnetic field through the magnetic field strength value and/or the magnetic field strength direction detected by the magnetic field sensor, so as to realize automatic judgment without manual participation, save costs, and avoid missed judgments caused by manual judgment.

In the present disclosure, when the obtained magnetic field strength value is greater than the preset magnetic field strength threshold, it can be determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, so as to realize whether the environment where the electronic device is located is disturbed by a disturbing magnetic field through the magnetic field strength value; the present disclosure also When the acquired magnetic field strength direction is different from the preset magnetic field strength direction, it can be determined that the environment where the electronic device is located is disturbed by the disturbing magnetic field, so as to realize whether the environment where the electronic device is located is judged by the magnetic field strength direction is disturbed by the disturbing magnetic field, which is easy to implement.

The preset magnetic field strength threshold of the present disclosure can be determined according to the maximum magnetic field strength value, so that as long as the obtained magnetic field strength value is greater than the preset magnetic field strength threshold, it is considered that the current interference magnetic field is disturbed, and it is no longer based on the output result of the Hall sensor Trigger events.

The preset magnetic field strength threshold of the present disclosure can be determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, so as to avoid the abnormal situation that the screen is not turned on when the protective case is opened.

The preset magnetic field strength threshold value of the present disclosure can be determined according to the second magnetic field strength critical value, and the preset magnetic field strength direction can be the opposite direction of the second magnetic field strength critical value, so as to avoid the abnormal situation that the protective cover is closed but the screen is not turned off , so as to avoid the waste of power caused by bright screen.

In this disclosure, when it is determined that the environment where the electronic device is located is not disturbed by the interference magnetic field, the output result of the Hall sensor can be used to judge whether to trigger a screen-on event or a screen-off event, which is easy to implement, and can avoid judging only by the distance sensor in any case lead to misjudgment.

In the present disclosure, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, the output result of the Hall sensor and the detected distance can be used to simultaneously judge whether to trigger a screen-on event or a screen-off event, thereby improving the accuracy of judgment and improving User experience, to avoid the annoyance caused by misjudgment to users.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a flowchart of a screen control method according to an exemplary embodiment of the present disclosure.

Fig. 2 is a flowchart of another screen control method according to an exemplary embodiment of the present disclosure.

Fig. 3 is a block diagram of a screen control device according to an exemplary embodiment of the present disclosure.

Fig. 4 is a block diagram of another screen control device according to an exemplary embodiment of the present disclosure.

Fig. 5 is a block diagram of another screen control device according to an exemplary embodiment of the present disclosure.

Fig. 6 is a block diagram of another screen control device according to an exemplary embodiment of the present disclosure.

Fig. 7 is a block diagram of a screen control device according to an exemplary embodiment of the present disclosure.

detailed description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

As shown in FIG. 1, FIG. 1 is a flowchart of a screen control method according to an exemplary embodiment of the present disclosure. The method can be used in an electronic device, and includes the following steps 101 to 103:

In step 101, when a Hall potential change is detected by a Hall sensor on the electronic device, it is determined whether the environment where the electronic device is located is disturbed by a disturbing magnetic field.

In step 102, when it is determined that the environment where the electronic device is located is disturbed by an interfering magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device.

In step 103, it is judged according to the detected distance whether to trigger a screen-on event or a screen-off event. event.

In the embodiment of the present disclosure, the electronic device may be a smart phone, a tablet computer, a PDA (Personal Digital Assistant, personal digital assistant), an e-book reader, a multimedia player, and other electronic products provided with Hall sensors. In order to protect the electronic equipment from being damaged, a protective cover can be configured for the electronic equipment. The protective case can include movable components and fixed components. The movable component can also be called the protective cover, which is a part that can be operated freely. A magnet may be installed on the movable component of the protective cover, so as to cause the Hall potential change in the Hall sensor when the protective cover is opened or closed.

The Hall sensor can be set on the motherboard of the electronic device. When the active components on the protective cover are turned on or off, the Hall sensor will detect the change of the Hall potential. The electronic device can judge whether the protective cover is protected according to the output result of the Hall sensor. open or closed.

The distance sensor is used to detect the distance of the active components on the protective case relative to the screen of the electronic device. The distance sensor may be a distance sensor that detects distance through infrared emission, or a distance sensor that detects distance through ultrasonic waves, or the like. The distance sensor can be arranged on the electronic device, or on the fixed part of the protective case. When the distance sensor is set on the electronic device, the set position is the position that can detect the distance between the movable component on the protective cover and the screen of the electronic device. According to the distance between the movable component and the screen of the electronic device, it can be judged that the movable component of the protective cover is far away from the screen. The state is still close to the state of the screen. If the distance sensor is set on the fixed part of the protective cover, the distance sensor and the electronic device are connected in a wired or wireless manner, so that the electronic device can obtain the distance detected by the distance sensor, and the protective cover can be judged according to the obtained distance Whether the active component is in a state away from the screen, or in a state close to the screen.

When the protective cover worn by the electronic device is opened or closed, or when it is disturbed by an external magnetic field, the Hall sensor on the electronic device will detect the change of the Hall potential, so only the data output by the Hall sensor can be used to determine whether the Triggering a screen-on event or a screen-off event will lead to misjudgment. Therefore, the present disclosure combines the Hall sensor and the distance sensor for judgment, which can avoid misjudgment, and further avoid triggering a screen-on event or a screen-off event by mistake.

Among them, the interference magnetic field is a magnetic field other than the normal magnetic field such as the earth's magnetic field and the magnetic field generated by the magnet on the protective cover worn by the electronic device. Under the interference of the interference magnetic field, it is impossible to correctly judge whether a protective cover has Open action or Close action. Therefore, when the Hall sensor on the electronic device detects the change of the Hall potential, first judge whether the environment where the electronic device is located is disturbed by the interference magnetic field, and when it is determined that the environment where the electronic device is located is interfered by the interference magnetic field, the electronic The distance of the protective case worn by the device relative to the screen of the electronic device. The distance of the protective case relative to the screen of the electronic device is the distance of the movable components of the protective case relative to the screen of the electronic device. By obtaining the distance, it can be judged whether the active component of the protective cover is in a state away from the screen or close to the screen, so as to determine whether to trigger a screen-on event or a screen-off event. Specifically, if it is determined according to the detected distance that the movable component of the protective case is far away from the screen, a screen-on event is triggered; if it is determined according to the detected distance that the movable component of the protective case is in a state close to the screen, a screen-off event is triggered.

In an optional implementation manner, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, it may be determined whether a screen-on event or a screen-off event is triggered based on the output result of the Hall sensor.

It can be seen that in this embodiment, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, the output result of the Hall sensor can be used to judge whether to trigger the screen-on event or the screen-off event, which is easy to implement, and can avoid using only the distance Misjudgment caused by sensor judgment.

In another optional implementation manner, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, it is simultaneously judged whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance.

In this embodiment, the output result of the Hall sensor and the detected distance can simultaneously determine whether to trigger a screen-on event or a screen-off event, and the event is triggered only when the same event is triggered according to the output result and the detected distance, otherwise, no processing is performed.

It can be seen that in this embodiment, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, it is possible to simultaneously judge whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance, so as to improve the accuracy of judgment , and improve the user experience, avoid misjudgment to the user's annoyance.

It can be seen from the above-mentioned embodiments that when the Hall sensor on the electronic device detects the change of the Hall potential, it is determined whether the environment where the electronic device is located is disturbed by a disturbing magnetic field, and when it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, The distance sensor detects the distance of the protective cover worn by the electronic device relative to the screen of the electronic device, and judges whether to trigger a screen-on event or a screen-off event according to the detected distance. By combining the Hall sensor with the distance sensor, it is possible to avoid misjudgment caused by judging only based on the output result of the Hall sensor when being interfered by an interfering magnetic field, thereby avoiding bad user experience caused by misjudgment.

There are many ways to judge whether the environment where the electronic equipment is located is disturbed by the interfering magnetic field, some of which are listed below for illustration.

In an optional implementation manner, when receiving the disturbance instruction, it is determined whether the environment where the electronic device is located is disturbed by the disturbance magnetic field. The interference instruction may be an instruction generated by the user by triggering a key or a button, and the interference instruction indicates that the current environment is disturbed by an interference magnetic field.

It can be seen that it is easy to realize the judgment of the interference magnetic field by means of the interference command.

In another optional implementation manner, it is determined whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the magnetic field strength detected by the magnetic field sensor arranged on the protective cover, wherein, during the closing or opening process of the protective cover , the relative position of the magnetic field sensor and the magnet on the protective cover is fixed.

In this embodiment, the magnetic field sensor can be arranged on the protective cover, and the relative position of the magnetic field sensor and the magnet on the protective cover is fixed, so that the magnetic field strength detected by the magnetic field sensor is not affected by the closing process and the opening process of the protective cover, that is The magnetic field strength detected by the magnetic field sensor during the closing process and the opening process of the protective cover is the same or within a range of magnetic field strengths with little difference.

In an example, a magnetic field strength threshold range may be set according to the magnetic field strengths detected by the magnetic field sensor during the closing process and the opening process of the protective cover. If the magnetic field strength detected by the magnetic field sensor is within the magnetic field strength threshold range, it is determined that the environment in which the electronic device is located is not disturbed by a disturbing magnetic field; Interference by interfering magnetic fields.

In addition, since the magnetic field sensor is set on the protective cover, in order to obtain the magnetic field strength from the magnetic field sensor set on the protective cover, the electronic device can be connected to the magnetic field sensor in a wired or wireless manner, so as to obtain the magnetic field detected by the magnetic field sensor strength.

It can be seen that in this embodiment, the magnetic field strength can be obtained from the magnetic field sensor provided on the protective cover, and judge whether the environment where the electronic device is located is disturbed by the disturbing magnetic field according to the obtained magnetic field strength, so as to automatically judge whether it is currently disturbed by the disturbing magnetic field , without human intervention.

In another optional implementation, the magnetic field strength value and/or the direction of the magnetic field strength can be obtained from the magnetic field sensor provided on the electronic device, and the location of the electronic device can be judged according to the obtained magnetic field strength value and/or the direction of the magnetic field strength. Whether the environment is disturbed by interfering magnetic fields. As shown in FIG. 2, FIG. 2 is a flowchart of another screen control method according to an exemplary embodiment of the present disclosure. The method can be used in an electronic device, and the method includes the following steps 201 to 204:

In step 201, when a Hall potential change is detected by the Hall sensor on the electronic device, a magnetic field intensity value and/or a magnetic field intensity direction is obtained from a magnetic field sensor disposed on the electronic device.

In step 202, it is judged according to the acquired magnetic field strength value and/or magnetic field strength direction whether the environment where the electronic device is located is disturbed by a disturbing magnetic field.

In step 203, when it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device.

In step 204, it is judged according to the detected distance whether to trigger a screen-on event or a screen-off event, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device.

In this embodiment, since the magnetic field sensor is arranged on the electronic device, the magnetic field strength detected by the magnetic field sensor will be affected by the opening process and the closing process of the protective case. When the Hall potential change is detected by the Hall sensor on the electronic device, the magnetic field strength value and/or the magnetic field strength direction detected by the magnetic field sensor disposed on the electronic device can be acquired.

Regarding the direction of the magnetic field strength, the direction of the magnetic field strength during the opening and closing process of the protective cover can be collected in the absence of an interfering magnetic field, and a preset magnetic field strength direction can be obtained. If the Hall sensor detects that the Hall potential is changing, and the obtained magnetic field strength direction is different from the preset magnetic field strength direction, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, and the preset magnetic field strength direction is not correct. The direction of the magnetic field detected by the magnetic field sensor under the influence of an interfering magnetic field. The magnetic field sensor can detect three-axis magnetic field directions, and if one of the detected three-axis magnetic field directions is different from the preset magnetic field strength direction, it can be determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field.

It can be seen that it is easy to judge whether the environment where the electronic device is located is disturbed by the disturbing magnetic field according to the direction of the magnetic field strength.

Regarding the magnetic field strength value, when the obtained magnetic field strength value is greater than the preset magnetic field strength threshold, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field.

In this embodiment, a magnetic field strength threshold can be preset, and the preset magnetic field strength threshold is greater than the magnetic field strength value detected by the magnetic field sensor without the influence of the disturbing magnetic field. Therefore, when the acquired magnetic field strength value is greater than the preset magnetic field strength threshold, it can be determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field.

In one example, the preset magnetic field strength threshold is determined according to the maximum magnetic field strength value, and the maximum magnetic field strength value is the magnetic field strength value detected by the magnetic field sensor in the closed state of the protective cover without being affected by a disturbing magnetic field .

Under the condition that the magnetic field sensor is not affected by the interference magnetic field and the protective cover is closed, the magnetic field intensity detected by the magnetic field sensor is the largest, and this intensity value can be determined as the maximum magnetic field intensity value.

On the one hand, the preset magnetic field strength threshold may be the same as the maximum magnetic field strength value. At this time, when the acquired magnetic field strength value is greater than the maximum magnetic field strength value, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field.

On the other hand, in order to avoid the influence caused by the detection error, the preset magnetic field strength threshold may be a value slightly larger or smaller than the maximum magnetic field strength value. Since the preset magnetic field strength threshold is slightly larger or smaller than the maximum magnetic field strength value, misjudgment due to detection errors can be avoided.

In another example, in some cases, although it is disturbed by the interference magnetic field, if the interference magnetic field is not large enough to affect the output result of the Hall sensor, the output result of the Hall sensor can still be used to determine whether to trigger the bright screen event , based on this, the preset magnetic field strength threshold is determined according to the magnetic field strength critical value, which is detected by the magnetic field sensor when the Hall sensor triggers a screen-on event/screen-off event without being affected by an interfering magnetic field Magnetic field strength value.

Since the Hall sensor will output the output result that can trigger the on-screen event/screen-off event when it detects that the Hall potential changes to a critical value, when the Hall potential reaches a critical value, the magnetic field strength detected by the magnetic field sensor is obtained. value. For example, the Hall sensor outputs 1 when it detects that the Hall potential changes to the first critical value, and 1 can indicate that a screen-on event is triggered, and the first magnetic field intensity detected by the magnetic field sensor when the Hall potential changes to the first critical value is obtained. value; the Hall sensor outputs 0 when it detects that the Hall potential changes to the second critical value, and 0 can indicate that the off-screen event is triggered, and the second magnetic field intensity detected by the magnetic field sensor when the Hall potential changes to the second critical value is obtained. value. Wherein, the first critical value and the second critical value may be the same or different, and are specifically set according to requirements.

In an optional implementation, the preset magnetic field strength threshold is determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is the The magnetic field strength value detected when the protective cover is in a closed state, the first magnetic field strength critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a screen-on event without being affected by an interfering magnetic field.

As one of the abnormal situations, if the protective case is opened but the screen is not turned on, this may be because the Hall potential cannot reach the first critical value, then there may be a field in the same direction as the first magnetic field strength critical value and greater than or equal to The magnetic field strength of the first magnetic field strength threshold. Therefore, the preset magnetic field strength threshold may be a value greater than or equal to the sum value, or may be a value slightly smaller than the sum value. The sum value is the sum value of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is the magnetic field strength detected by the magnetic field sensor in the closed state of the protective cover without being affected by an interfering magnetic field value, the first critical value of magnetic field strength is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a screen brightening event without being affected by an interfering magnetic field.

Based on this, the maximum value monitored by the magnetic field sensor during the opening process can be obtained from the magnetic field sensor provided on the electronic device, and when the obtained maximum value is greater than the preset magnetic field strength threshold, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field. This embodiment can avoid the abnormal situation that the screen is not turned on when the protective cover is opened.

In another optional implementation manner, the preset magnetic field strength threshold is determined according to a second magnetic field strength critical value, the direction of the preset magnetic field strength is opposite to the direction of the second magnetic field strength critical value, and the second magnetic field strength The critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a screen-off event without being affected by an interfering magnetic field.

As one of the abnormal situations, if the protective cover is closed but the screen does not shut off, this situation may be because the Hall potential cannot reach the second critical value, and there may be a field that is opposite to the second magnetic field strength critical value and greater than or equal to the second critical value. Second, the magnetic field strength of the critical value of the magnetic field strength. Therefore, the preset magnetic field strength threshold may be a value greater than or equal to the second magnetic field strength critical value, or a value slightly smaller than the second magnetic field strength critical value.

Based on this, the magnetic field strength value and the magnetic field strength direction are obtained from the magnetic field sensor arranged on the electronic device. When the obtained magnetic field strength is greater than or equal to the preset magnetic field strength threshold value, the obtained magnetic field strength direction and the second magnetic field strength threshold When the direction is opposite, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field. This embodiment can avoid the abnormal situation that the screen is not turned off when the protective case is closed, thereby avoiding power waste caused by turning on the screen.

It can be seen that it is possible to judge whether the environment where the electronic device is located is disturbed by the interfering magnetic field according to the magnetic field strength value or the magnetic field strength direction alone, or it is possible to combine the magnetic field strength value and the magnetic field strength direction to judge whether the environment where the electronic device is located is disturbed by the disturbing magnetic field.

In addition, steps 203 and 204 are the same as steps 102 and 103 in related technologies, and will not be repeated here.

It can be seen from the above-mentioned embodiments that in this embodiment, when the Hall potential change is detected by the Hall sensor on the electronic device, the magnetic field strength value and/or the magnetic field strength direction are obtained from the magnetic field sensor arranged on the electronic device, and according to the acquired The magnetic field strength value and/or the direction of the magnetic field strength can be used to judge whether the environment in which the electronic device is located is disturbed by a disturbing magnetic field. According to the distance of the screen, judge whether to trigger a screen on event or an off screen event based on the detected distance. In this embodiment, the magnetic field strength value and/or the magnetic field strength direction detected by the magnetic field sensor is used to judge whether the environment where the electronic device is located is disturbed by the interference magnetic field, thereby realizing automatic judgment without manual participation, saving costs, and avoiding missed judgments caused by manual judgment.

It can be understood that, the above only enumerates several methods for judging whether the environment where the electronic device is located is disturbed by a disturbing magnetic field, and other methods may also be included, which will not be repeated here.

The various technical features in the above embodiments can be combined arbitrarily, as long as there is no conflict or contradiction between the combinations of features, but due to space limitations, they are not described one by one, so the various technical features in the above embodiments can be combined arbitrarily It also belongs to the scope disclosed in this specification.

Corresponding to the foregoing embodiments of the screen control method, the present disclosure also provides embodiments of a screen control device and an electronic device to which it is applied.

As shown in FIG. 3 , FIG. 3 is a block diagram of a screen control device according to an exemplary embodiment of the present disclosure. The device includes an interference magnetic field judgment module 310 , a distance acquisition module 320 and an event trigger module 330 .

Wherein, the interference magnetic field determination module 310 is configured to determine whether the environment where the electronic device is located is disturbed by the interference magnetic field when the Hall sensor on the electronic device detects a change in the Hall potential.

The distance acquisition module 320 is configured to detect the distance of the protective case worn by the electronic device relative to the screen of the electronic device through a distance sensor when it is determined that the environment where the electronic device is located is disturbed by an interfering magnetic field.

The event trigger module 330 is configured to judge whether to trigger a screen-on event or a screen-off event according to the detected distance. off-screen events.

It can be seen from the above embodiments that when the Hall sensor on the electronic device detects a change in the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by a disturbance magnetic field, and when it is determined that the environment where the electronic device is located is disturbed by a disturbance magnetic field, the distance The sensor detects the distance between the protective case worn by the electronic device and the screen of the electronic device, and judges whether to trigger a screen-on event or a screen-off event according to the detected distance. By combining the Hall sensor with the distance sensor, it is possible to avoid misjudgment caused by judging only based on the output result of the Hall sensor when being interfered by an interfering magnetic field, thereby avoiding bad user experience caused by misjudgment.

As shown in FIG. 4, FIG. 4 is a block diagram of another screen control device according to an exemplary embodiment of the present disclosure. On the basis of the embodiment shown in FIG. 3, the interference magnetic field judging module 310 A first judging sub-module 311 is included.

Wherein, the first judging sub-module 311 is configured to judge whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the magnetic field strength detected by the magnetic field sensor arranged on the protective case, wherein, when the protective case is closed or opened During the process, the relative position of the magnetic field sensor and the magnet on the protective cover is fixed.

It can be seen from the above embodiments that the magnetic field strength can be obtained from the magnetic field sensor provided on the protective cover, and judge whether the environment where the electronic device is located is disturbed by the disturbing magnetic field according to the obtained magnetic field strength, so as to automatically judge whether it is currently disturbed by the disturbing magnetic field, without Human involvement.

As shown in FIG. 5, FIG. 5 is a block diagram of another screen control device according to an exemplary embodiment of the present disclosure. On the basis of the embodiment shown in FIG. 3, the interference magnetic field judging module 310 It includes: a parameter acquisition submodule 312 and a second judgment submodule 313 .

Wherein, the parameter acquisition sub-module 312 is configured to acquire the magnetic field intensity value and/or the magnetic field intensity direction from the magnetic field sensor provided on the electronic device.

The second judging sub-module 313 is configured to judge whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the acquired magnetic field strength value and/or magnetic field strength direction.

It can be seen from the above embodiments that it is possible to determine whether the environment in which the electronic device is located is disturbed by the interfering magnetic field based on the magnetic field strength value and/or the direction of the magnetic field strength detected by the magnetic field sensor, thereby realizing automatic judgment without manual participation, saving costs, and avoiding errors caused by manual judgment. missed judgment.

As shown in FIG. 6, FIG. 6 is a block diagram of another screen control device according to an exemplary embodiment of the present disclosure. On the basis of the embodiment shown in FIG. 5, the second judging submodule 313 may include at least one of the following submodules. For clarity of example, all submodules that may be included in the second judging submodule 313 are shown in FIG. 5 : an intensity value judging submodule 3131 and a direction judging submodule 3132 .

Wherein, the strength value judging sub-module 3131 is configured to determine that the environment where the electronic device is located is disturbed by a disturbing magnetic field when the acquired magnetic field strength value is greater than a preset magnetic field strength threshold.

The direction judging sub-module 3132 is configured to determine that the environment where the electronic device is located is disturbed by a disturbing magnetic field when the acquired magnetic field strength direction is different from the preset magnetic field strength direction, and the preset magnetic field strength direction is not affected by the disturbing magnetic field. The direction of the magnetic field detected by the magnetic field sensor.

It can be seen from the above embodiments that when the obtained magnetic field strength value is greater than the preset magnetic field strength threshold, it can be determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, so as to realize whether the environment where the electronic device is located is disturbed by a disturbing magnetic field based on the magnetic field strength value ; This disclosure can also determine whether the environment where the electronic device is located is disturbed by the interference magnetic field when the acquired magnetic field strength direction is different from the preset magnetic field strength direction, so as to realize whether the environment where the electronic device is located is interfered by the interference magnetic field through the direction of the magnetic field strength. It is easy to realize; the obtained magnetic field strength value and the obtained magnetic field strength direction can also be judged at the same time.

In an optional implementation manner, the preset magnetic field strength threshold is determined according to a maximum magnetic field strength value, and the maximum magnetic field strength value is detected by the magnetic field sensor when the protective cover is closed without being affected by a disturbing magnetic field The value of the magnetic field strength.

In an optional implementation, the preset magnetic field strength threshold is determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is the The magnetic field strength value detected when the protective cover is in a closed state, the first magnetic field strength critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a bright screen event without being affected by an interfering magnetic field;

In an optional implementation manner, the preset magnetic field strength threshold is determined according to a second magnetic field strength critical value, the direction of the preset magnetic field strength is opposite to the direction of the second magnetic field strength critical value, and the second magnetic field strength threshold is The value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a screen-off event without being affected by an interfering magnetic field.

In an optional implementation, the event trigger module is also configured to:

When it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, it is determined whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor.

It can be seen from the above embodiments that when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, the output result of the Hall sensor can be used to judge whether to trigger a screen-on event or a screen-off event, which is easy to implement and can avoid using only Misjudgment caused by the distance sensor.

In an optional implementation, the event trigger module is also configured to:

When it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, it is simultaneously judged whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance.

It can be seen from the above embodiments that when it is determined that the environment in which the electronic device is located is not disturbed by the interfering magnetic field, it is possible to simultaneously judge whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance, thereby improving the accuracy of judgment rate, improve user experience, and avoid troubles caused by misjudgments to users.

Correspondingly, the present disclosure also provides a screen control device, the device includes a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to:

When the Hall sensor on the electronic device detects the change of the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by a disturbing magnetic field.

When it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device.

Determine whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device .

For details about the implementation process of the functions and effects of each module in the above device, refer to the implementation process of the corresponding steps in the above method, which will not be repeated here.

As for the device embodiment, since it basically corresponds to the method embodiment, for related parts, please refer to the part description of the method embodiment. The device embodiments described above are only illustrative, and the modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in One place, or it can be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. It can be understood and implemented by those skilled in the art without creative effort.

As shown in FIG. 7 , FIG. 7 is a block diagram of an apparatus 700 for screen control according to an exemplary embodiment of the present disclosure. The device 700 may be a mobile phone, a computer, a digital broadcast terminal, a game console, a tablet device, a personal digital assistant and other electronic devices with a routing function.

7, device 700 may include one or more of the following components: processing component 702, memory 704, power supply component 706, multimedia component 708, audio component 710, input/output (I/O) interface 712, sensor component 714, and communication component 716 .

The processing component 702 generally controls the overall operations of the device 700, such as those associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 702 may include one or more processors 720 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 702 may include one or more modules that facilitate interaction between processing component 702 and other components. For example, processing component 702 may include a multimedia module to facilitate interaction between multimedia component 708 and processing component 702 .

The memory 704 is configured to store various types of data to support operations at the device 700 . Examples of such data include instructions for any application or method operating on device 700, contact data, phonebook data, messages, pictures, videos, and the like. The memory 704 can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 706 provides power to various components of the device 700 . Power components 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 700 .

The multimedia component 708 includes a screen that provides an output interface between the device 700 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 708 includes a front camera and/or a rear camera. When the device 700 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a microphone (MIC), which is configured to receive external audio signals when the device 700 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 704 or sent via communication component 716 . In some embodiments, the audio component 710 also includes a speaker for outputting audio signals.

The I/O interface 712 provides an interface between the processing component 702 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

Sensor assembly 714 includes one or more sensors for providing various aspects of status assessment for device 700 . For example, the sensor component 714 can detect the open/closed state of the device 700, the relative positioning of components such as the display and keypad of the device 700, the sensor component 714 can also detect the position of the device 700 or a component in the device 700 Changes, presence or absence of user contact with device 700, device 700 orientation or acceleration/deceleration and temperature changes of device 700. Sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 714 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a distance sensor, a pressure sensor or a temperature sensor.

The communication component 716 is configured to facilitate wired or wireless communication between the apparatus 700 and other devices. The device 700 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 700 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 704 including instructions, which can be executed by the processor 720 of the device 700 to implement the above method. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Wherein, when the instructions in the storage medium are executed by the processor, the device 700 is enabled to execute a screen control method, including:

When the Hall sensor on the electronic device detects the change of the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by a disturbing magnetic field.

When it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device.

Determine whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device .

Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any modification, use or adaptation of the present disclosure. These modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the present disclosure within the scope of protection.

Claims (13)

1. A screen control method, characterized in that the method comprises: When the Hall sensor on the electronic device detects a change in the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by an interfering magnetic field; When it is determined that the environment in which the electronic device is located is disturbed by an interfering magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device; Determine whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device . 2. The method according to claim 1, wherein the judging whether the environment where the electronic device is located is disturbed by an interfering magnetic field comprises: According to the magnetic field strength detected by the magnetic field sensor arranged on the protective cover, it is judged whether the environment where the electronic device is located is disturbed by a disturbing magnetic field, wherein, during the closing or opening process of the protective cover, the magnetic field sensor and the protective cover The relative position of the upper magnet is fixed. 3. The method according to claim 1, wherein the judging whether the environment where the electronic device is located is disturbed by an interfering magnetic field comprises: Obtaining the magnetic field strength value and/or the magnetic field strength direction from a magnetic field sensor disposed on the electronic device; According to the acquired magnetic field strength value and/or magnetic field strength direction, it is judged whether the environment where the electronic device is located is disturbed by a disturbing magnetic field. 4. The method according to claim 3, wherein the judging whether the environment in which the electronic device is located is disturbed by an interfering magnetic field according to the acquired magnetic field strength value and/or magnetic field strength direction comprises at least one of the following methods: When the obtained magnetic field strength value is greater than the preset magnetic field strength threshold, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field; When the acquired magnetic field strength direction is different from the preset magnetic field strength direction, it is determined that the environment where the electronic device is located is disturbed by a disturbing magnetic field, and the preset magnetic field strength direction is a magnetic field direction detected by the magnetic field sensor without being affected by the disturbing magnetic field. 5. The method of claim 4, wherein, The preset magnetic field strength threshold is determined according to a maximum magnetic field strength value, and the maximum magnetic field strength value is the magnetic field strength value detected by the magnetic field sensor when the protective cover is closed without being affected by a disturbing magnetic field; Or, the preset magnetic field strength threshold is determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is when the magnetic field sensor is in the closed state of the protective cover without being affected by a disturbing magnetic field The magnetic field strength value detected at the time, the first magnetic field strength critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a bright screen event without being affected by an interfering magnetic field; Or, the preset magnetic field strength threshold is determined according to the second magnetic field strength critical value, the direction of the preset magnetic field strength is opposite to the direction of the second magnetic field strength critical value, and the second magnetic field strength critical value is not affected by the disturbance magnetic field The magnetic field strength value detected by the magnetic field sensor when the lower Hall sensor triggers the screen-off event. 6. The method according to any one of claims 1 to 5, characterized in that the method further comprises: When it is determined that the environment in which the electronic device is located is not disturbed by the interfering magnetic field, it is judged by the output result of the Hall sensor whether to trigger a screen-on event or a screen-off event; Or, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, simultaneously judge whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance. 7. A screen control device, characterized in that the device comprises: The interference magnetic field judging module is configured to judge whether the environment where the electronic device is located is disturbed by the interference magnetic field when the Hall sensor on the electronic device detects a change in the Hall potential; The distance acquisition module is configured to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device through a distance sensor when it is determined that the environment where the electronic device is located is disturbed by an interfering magnetic field; The event trigger module is configured to judge whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns the electronic device The event that the screen of the device turns off. 8. The device according to claim 7, wherein the interference magnetic field judgment module comprises: The first judging submodule is configured to judge whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the magnetic field strength detected by the magnetic field sensor arranged on the protective cover, wherein, during the closing or opening process of the protective cover, The relative position of the magnetic field sensor and the magnet on the protective cover is fixed. 9. The device according to claim 7, wherein the interference magnetic field judgment module comprises: The parameter acquisition submodule is configured to acquire the magnetic field strength value and/or the magnetic field strength direction from the magnetic field sensor provided on the electronic device; The second judging submodule is configured to judge whether the environment where the electronic device is located is disturbed by a disturbing magnetic field according to the acquired magnetic field strength value and/or magnetic field strength direction. 10. The device according to claim 9, wherein the second judging submodule comprises at least one of the following submodules: The strength value judging sub-module is configured to determine that the environment where the electronic device is located is disturbed by a disturbing magnetic field when the obtained magnetic field strength value is greater than a preset magnetic field strength threshold; The direction judging submodule is configured to determine that the environment where the electronic device is located is disturbed by a disturbing magnetic field when the acquired magnetic field strength direction is different from the preset magnetic field strength direction, and the preset magnetic field strength direction is not affected by the disturbing magnetic field as described below The direction of the magnetic field detected by the magnetic field sensor. 11. The apparatus of claim 10, wherein: The preset magnetic field strength threshold is determined according to a maximum magnetic field strength value, and the maximum magnetic field strength value is the magnetic field strength value detected by the magnetic field sensor when the protective cover is closed without being affected by a disturbing magnetic field; Or, the preset magnetic field strength threshold is determined according to the sum of the maximum magnetic field strength value and the first magnetic field strength critical value, and the maximum magnetic field strength value is when the magnetic field sensor is in the closed state of the protective cover without being affected by a disturbing magnetic field The magnetic field strength value detected at the time, the first magnetic field strength critical value is the magnetic field strength value detected by the magnetic field sensor when the Hall sensor triggers a bright screen event without being affected by an interfering magnetic field; Or, the preset magnetic field strength threshold is determined according to the second magnetic field strength critical value, the direction of the preset magnetic field strength is opposite to the direction of the second magnetic field strength critical value, and the second magnetic field strength critical value is not affected by the disturbance magnetic field The magnetic field strength value detected by the magnetic field sensor when the lower Hall sensor triggers the screen-off event. 12. The device according to any one of claims 7 to 11, wherein the event trigger module is further configured to: When it is determined that the environment in which the electronic device is located is not disturbed by the interfering magnetic field, it is judged by the output result of the Hall sensor whether to trigger a screen-on event or a screen-off event; Or, when it is determined that the environment where the electronic device is located is not disturbed by the interfering magnetic field, simultaneously judge whether to trigger a screen-on event or a screen-off event based on the output result of the Hall sensor and the detected distance. 13. A screen control device, characterized in that it comprises: processor; memory for storing processor-executable instructions; Wherein, the processor is configured as: When the Hall sensor on the electronic device detects a change in the Hall potential, it is judged whether the environment where the electronic device is located is disturbed by an interfering magnetic field; When it is determined that the environment in which the electronic device is located is disturbed by an interfering magnetic field, a distance sensor is used to detect the distance of the protective cover worn by the electronic device relative to the screen of the electronic device; Determine whether to trigger a screen-on event or a screen-off event according to the detected distance, the screen-on event is an event that lights up the screen of the electronic device, and the screen-off event is an event that turns off the screen of the electronic device .