Multi-screen cooperative display method and intelligent terminal

Abstract

The application discloses a multi-screen cooperative display method and an intelligent terminal, wherein the multi-screen cooperative display method comprises the following steps: determining whether a mobile phone shielding system is in an open state; if it is determined that the mobile phone shielding system is in the open state, sending preset frequency band information and a first request instruction to the mobile phone shielding system, and receiving a first communication rule returned by the mobile phone shielding system; determining whether the mobile phone shielding system is switched to a first working state, wherein the first working state is a working state in which the mobile phone shielding system transmits shielding signals according to the first communication rule; if it is determined that the mobile phone shielding system is switched to work according to the first communication rule, sending synchronization information to all second intelligent terminals based on the first communication rule, wherein the synchronization information is used for triggering the second intelligent terminals to update mirror interface images; and the frequency band of the synchronization information is always different from that of the shielding signals. The technical scheme of the application can reduce the influence of the mobile phone shielding system on the multi-screen cooperative display.

Description

Technical Field

[0001] The present invention relates to the field of multi-screen collaborative technology, and in particular to a multi-screen collaborative display method and a smart terminal. Background Art

[0002] Multi-screen collaborative display technology is a cross-screen collaboration technology between multiple terminal devices. Multi-screen collaborative technology generally refers to task collaboration between different device attributes in a wireless state, such as between mobile phones, tablets, and laptops. Multi-screen collaborative technology allows operators to drag and drop files to other terminal devices for display or other operations. By using the display screen of other terminal devices as a secondary screen, the screen display space on the current terminal is reduced, or other terminal devices can display the same display content synchronously. Currently, multi-screen collaborative display technology has begun to be applied to conference rooms to create more intelligent high-end meeting scenes.

[0003] The mobile phone blocking system is a system that can be used to prevent participants from using mobile phones to secretly broadcast the content of the meeting. It is also commonly used to create a more intelligent high-end meeting scene. Summary of the Invention

[0004] The main purpose of the present invention is to provide a multi-screen collaborative display method, which aims to solve the problem that multi-screen collaborative technology is affected by the operation of the mobile phone shielding system.

[0005] To achieve the above objectives, the multi-screen collaborative display method proposed in the present invention is applied to a first smart terminal, wherein the first smart terminal is wirelessly connected to at least one second smart terminal, and the first smart terminal is wiredly connected to a mobile phone shielding system, wherein the first smart terminal is used to display a main interface image, and the second smart terminal is used to display a mirror interface image, wherein the content of the mirror interface image is a mirror image of the main interface image. The multi-screen collaborative display method includes:

[0006] Determine whether the cell phone blocking system is on;

[0007] If it is determined that the mobile phone shielding system is in the on state, the preset frequency band information and the first request instruction are sent to the mobile phone shielding system, and the first communication rule returned by the mobile phone shielding system is received; the preset frequency band information includes a preset communication frequency band for wireless communication between the first smart terminal and the second smart terminal, and the first communication rule is generated by the mobile phone shielding system based on the preset frequency band information;

[0008] determining whether the mobile phone shielding system is switched to a first working state; wherein the first working state is a working state in which the mobile phone shielding system transmits a shielding signal according to the first communication rule;

[0009] If it is determined that the mobile phone shielding system is switched to operate in accordance with the first communication rule, synchronization information is sent to all second smart terminals based on the first communication rule; the synchronization information is used to trigger the second smart terminals to update the mirror interface image;

[0010] The frequency bands of the synchronization information and the shielding signal are always different.

[0011] Optionally, determining whether the mobile phone shielding system is in an on state includes:

[0012] Detect environmental signals;

[0013] Determine whether there is a shielding signal feature in the environmental signal;

[0014] If the shielding signal characteristics exist in the environmental signal, it is determined that the mobile phone shielding system is in the on state;

[0015] If the shielding signal feature does not exist in the environmental signal, it is determined that the mobile phone shielding system is in the off state.

[0016] Optionally, the detecting an environmental signal includes:

[0017] Obtaining preset communication frequency band information; the preset communication frequency band information includes a communication bandwidth and a center frequency point used for communicating with the second smart terminal;

[0018] Based on the preset communication frequency band information, an electromagnetic wave signal in the environment within the preset communication frequency band is obtained as an environmental signal;

[0019] The preset communication frequency band is a frequency band corresponding to the preset communication frequency band information.

[0020] Optionally, determining whether the shielding signal feature exists in the environmental signal includes:

[0021] determining whether the signal power of the communication signal in the electromagnetic wave signal is greater than a preset signal power;

[0022] If it is determined that the power is greater than the preset signal power, it is determined that there is a shielding signal feature in the environmental signal;

[0023] If it is determined that the signal power is within the preset signal power, further determining whether there are two adjacent subcarriers in the electromagnetic wave signal whose signal interval is less than the preset signal interval;

[0024] If the signal interval between two adjacent subcarriers is less than the preset signal interval, it is determined that the shielding signal feature exists in the environmental signal;

[0025] If there is no signal interval between two adjacent subcarriers that is less than the preset signal interval, it is determined that there is no shielding signal feature in the environmental signal.

[0026] Optionally, the first communication rule includes a switching characteristic signal and a communication rule, wherein the communication rule includes the mobile phone shielding system shielding a first frequency band covered by the signal and a second frequency band not covered by the signal in each time unit, and each of the second frequency bands is within a preset communication frequency band;

[0027] The sending synchronization information to all second smart terminals based on the first communication rule includes:

[0028] determining whether the environmental signal has a switching feature;

[0029] If the switching feature occurs, synchronization information is sent to all second smart terminals via the second frequency band in each time unit according to the first communication rule.

[0030] Optionally, determining whether the environmental signal has a switching feature includes:

[0031] Determine whether the shielding signal characteristics disappear;

[0032] If it is determined that the shielding signal feature disappears, determining whether the shielding signal feature appears again within a first preset time period;

[0033] If it appears again, it is determined that the environmental signal has a switching feature;

[0034] If it does not appear again, the synchronization information is sent to all second smart terminals via the preset communication frequency band.

[0035] Optionally, the second frequency bands corresponding to two adjacent time units are different.

[0036] Optionally, after sending synchronization information to all second smart terminals based on the first communication rule, the method further includes:

[0037] Determining whether a duration for sending synchronization information to all second smart terminals according to the first communication rule reaches a second preset duration;

[0038] If the second preset time is reached, determining whether the display parameters of the main interface image meet the preset standards;

[0039] If the preset standard is met, a second request instruction is sent to the mobile phone shielding system, and a second communication rule is returned by the mobile phone shielding system; the second communication rule is different from the first communication rule;

[0040] The second communication rule is updated to the first communication rule, and the process returns to the step of "determining whether the mobile phone shielding system is switched to the first working state".

[0041] Optionally, determining whether the display parameters of the main interface image meet preset standards includes:

[0042] Determining whether the main interface image remains unchanged for a display time period reaching a third preset time period;

[0043] If the third preset time is reached, determining whether the display parameters of the main interface image meet the preset standards;

[0044] If the third preset time period is not reached, it is determined whether the display parameters of the main interface image meet the preset standards.

[0045] The present invention further provides an intelligent terminal, comprising:

[0046] memory; and,

[0047] A processor, a multi-screen collaborative display program stored in the memory and executed by the processor, wherein the multi-screen collaborative display program implements the multi-screen collaborative display method as described above when executed by the processor.

[0048] The technical solution of the present invention is to allow the first smart terminal to send preset frequency band information and a first request instruction to the mobile phone shielding system when it is determined that the mobile phone shielding system is in the on state, and receive the first communication rule returned by the mobile phone shielding system; when it is determined that the mobile phone shielding system switches to the first working state of transmitting the shielding signal in accordance with the first communication rule, based on the first communication rule, send synchronization information for triggering the second smart terminal to update the mirror interface image to all second smart terminals, and the frequency band of the synchronization information is always different from that of the shielding signal. The multi-screen collaborative display method of the present invention enables the interference signal emitted by the mobile phone shielding system to still cover most of the frequency bands, and only part of the frequency band used to transmit the synchronization information is not covered, which will not reduce the shielding effect of the mobile phone shielding system too much, and at the same time can ensure that the first smart terminal and the second smart terminal screen perform multi-screen collaborative display. In addition, the first smart terminal and the mobile phone shielding system are configured to be connected by wired communication. Compared with the wireless communication connection solution, it can avoid the signal transmission between the first smart terminal and the mobile phone shielding system being affected by the shielding signal when the mobile phone shielding system is turned on in advance, which is conducive to improving the stability of signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0050] Figure 1 This is a flow chart of an embodiment of a multi-screen collaborative display method according to the present invention;

[0051] Figure 2 This is a detailed flowchart of step S100 in an embodiment of the multi-screen collaborative display method of the present invention;

[0052] Figure 3 This is a detailed flowchart of step S110 in an embodiment of the multi-screen collaborative display method of the present invention;

[0053] Figure 4 This is a detailed flowchart of step S120 in an embodiment of the multi-screen collaborative display method of the present invention;

[0054] Figure 5 This is a detailed flowchart of step S400 in an embodiment of the multi-screen collaborative display method of the present invention; Figure 6 This is a detailed flowchart of step S410 in an embodiment of the multi-screen collaborative display method of the present invention;

[0055] Figure 7 Schematic diagram of the hardware structure of an intelligent terminal in one embodiment of the present invention.

[0056] Description of Figure Numbers:

[0057] Label name Label name Memory 11 Communication bus 13 processor 12

[0058] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0060] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0061] Multi-screen collaborative display technology allows a large number of smart terminals that are close to each other to display the same interface image, and it can currently be used in conference rooms to share interface images. At the same time, some high-end conference rooms are often equipped with mobile phone shielding systems, which transmit shielding signals to prevent participants from leaking meeting content through smart terminals such as mobile phones. In actual applications, it is found that since the essence of multi-screen collaborative display technology is to share interface images with other smart terminals through wireless signals, this causes the wireless signals of the multi-screen collaborative display technology to be affected by the interference signals emitted by the mobile phone shielding system, making it impossible for other smart terminals to synchronously display the corresponding interface images, resulting in the inability to use multi-screen collaborative display technology in conference situations where the mobile phone shielding system needs to be turned on. This greatly hinders the application of multi-screen collaborative technology in highly confidential meeting scenarios, which is also a problem that needs to be solved urgently by those skilled in the art.

[0062] In response to the above problems, the present invention proposes a multi-screen collaborative display method, which is applied to a first smart terminal. The first smart terminal is wirelessly connected to at least one second smart terminal, and the first smart terminal is wiredly connected to the mobile phone shielding system. The first smart terminal is used to display the main interface image, and the second smart terminal is used to display the mirror interface image. The content of the mirror interface image is a mirror image of the main interface image.

[0063] It is understandable that the first smart terminal may be a smart terminal operated and used by a conference speaker, and the second smart terminal may be a smart terminal used by conference participants.

[0064] Reference Figure 1 In one embodiment, the multi-screen collaborative display method includes:

[0065] Step S100: determining whether the mobile phone shielding system is in an on state;

[0066] Step S200: If it is determined that the mobile phone shielding system is in the on state, preset frequency band information and a first request instruction are sent to the mobile phone shielding system, and a first communication rule is received back from the mobile phone shielding system; the preset frequency band information includes a preset communication frequency band for wireless communication between the first smart terminal and the second smart terminal, and the first communication rule is generated by the mobile phone shielding system based on the preset frequency band information;

[0067] Step S300: determining whether the mobile phone shielding system is switched to a first working state, wherein the first working state is a working state in which the mobile phone shielding system transmits a shielding signal according to a first communication rule;

[0068] Step S400: If it is determined that the mobile phone shielding system is switched to operate according to the first communication rule, synchronization information is sent to all second smart terminals based on the first communication rule, and the synchronization information is used to trigger the second smart terminals to update the mirror interface image;

[0069] The frequency bands of the synchronization information and the shielding signal characteristics are always different.

[0070] In step S100, the first smart terminal can obtain the working status of the mobile phone shielding system by communicating with the mobile phone shielding system, or detecting whether there is a shielding signal in the environmental signal, or the operator can obtain the working status of the mobile phone shielding system through input from the interactive module. The working status of the mobile phone shielding system includes an on state and a off state. If the mobile phone shielding system is in the on state, step S200 is executed. If the mobile phone shielding system is in the off state, the first smart terminal can send synchronization information corresponding to the update operation to all second smart terminals through the preset communication frequency band when receiving the user's update operation on the main interface image, so that the mirror interface images displayed by all second smart terminals can be updated synchronously with the changes in the main interface image, thereby realizing multi-screen collaborative display of the first smart terminal and all second smart terminals.

[0071] In step S200, upon determining that the mobile phone shielding system is enabled, the first smart terminal transmits preset frequency band information and a first request instruction to the mobile phone shielding system. The preset frequency band information includes the frequency band pre-configured by the first smart terminal and the second smart terminal for transmitting synchronization information, i.e., the preset communication frequency band. The first request instruction is used to request the mobile phone shielding system to change the frequency band of the shielding signal it transmits. It is understood that in the prior art, the frequency band of the shielding signal is configured to cover the entire frequency band (e.g., 900MHz to 7200MHz), which also includes the frequency band of the preset communication frequency band. Therefore, upon receiving the first request instruction, the mobile phone shielding system is configured to switch its transmitted shielding signal's full-band coverage rule to a first communication rule that covers most of the frequency band, while leaving a small portion of the preset communication frequency band uncovered. The switched first communication rule is then transmitted to the first smart terminal, allowing the first smart terminal to transmit synchronization information according to the first communication rule. It is understood that the operating state of the mobile phone shielding system transmitting the shielding signal according to the first communication rule after the switch is made is the first operating state.

[0072] In step S300 , the mobile phone shielding system may output a corresponding signal to the first smart terminal after switching to the first working state, so that the first smart terminal can determine whether the switching to the first working state of the mobile phone shielding system is completed.

[0073] In step S400, after confirming that the mobile phone shielding system has switched to the first working state, the first smart terminal can send synchronization information to the second smart terminal through the frequency band not covered by the shielding signal in the preset communication frequency band according to the first communication rule. At the same time, the mobile phone shielding system also transmits a shielding signal that can cover most frequency bands according to the first communication rule, but does not transmit a shielding signal for the frequency band used to transmit the synchronization signal, so that the frequency band used by the first smart terminal to send the synchronization signal is the same as the frequency band used by the mobile phone shielding system to shield the signal.

[0074] This arrangement ensures that the interference signal emitted by the mobile phone shielding system can still cover most of the frequency bands, with only some frequency bands used to transmit synchronization information not covered. This will not significantly reduce the shielding effect of the mobile phone shielding system, and at the same time ensure that the first smart terminal and the second smart terminal screen can perform multi-screen collaborative display, thereby solving the problem of multi-screen collaborative technology being affected by the operation of the mobile phone shielding system. In addition, the first smart terminal and the mobile phone shielding system are configured to be connected via wired communication. Compared with the wireless communication connection solution, this can prevent the signal transmission between the first smart terminal and the mobile phone shielding system from being affected by the shielding signal when the mobile phone shielding system is turned on in advance, which is conducive to improving the stability of signal transmission.

[0075] Reference Figure 2 Step S100: Determine whether the mobile phone shielding system is in an on state, including:

[0076] Step S110: detecting environmental signals;

[0077] Step S120: determining whether there is a shielding signal feature in the environmental signal;

[0078] Step S130: If the shielding signal feature exists in the environmental signal, it is determined that the mobile phone shielding system is in the on state;

[0079] Step S140: If the shielding signal feature does not exist in the environmental signal, it is determined that the mobile phone shielding system is in a closed state.

[0080] In actual applications, the multi-screen collaborative display technology and mobile phone shielding system of smart terminals are often provided by different manufacturers. Due to the complexity of the working conditions of the mobile phone shielding system, the two manufacturers often have inconsistent definitions of the working status, which may cause the first smart terminal to mistakenly judge it as being in the off state based on the working status information fed back by the mobile phone shielding system. To address this, the technical solution of the present invention is provided with steps S110 to S140, so that the first smart terminal can actively judge the working status of the mobile phone shielding system based on whether there is a shielding signal feature, rather than relying entirely on the working status information fed back by the mobile phone shielding system, thereby more accurately determining the working status of the mobile phone shielding system.

[0081] In this example, the shielding signal characteristics may be signal characteristics unique to the shielding signal, such as signal power, unique signal interval, data content or signal form unique to the shielding signal, etc., which are not limited in this embodiment.

[0082] Optionally, refer to Figure 3 Step S110 includes:

[0083] Step S111: Acquire preset communication frequency band information, where the preset communication frequency band information includes a communication bandwidth and a center frequency point used for communicating with the second smart terminal;

[0084] Step S112: Based on the preset communication frequency band information, an electromagnetic wave signal in the environment within the preset communication frequency band is obtained as an environmental signal;

[0085] Among them, the preset communication frequency band is a frequency band corresponding to the preset communication frequency band information.

[0086] It is understood that the communication bandwidth is the bandwidth of the preset communication frequency band, and the center frequency is half the sum of the upper and lower frequency limits of the preset communication frequency band. It should be noted that some mobile phone shielding systems have a shielding frequency band selection function. In some meeting situations, operators may decide whether to allow the shielding signal to cover the entire frequency band based on the importance of the meeting content. Therefore, it is understood that when the shielding signal does not cover the preset communication frequency band, the synchronization information sent by the first smart terminal via the preset communication frequency band will not be affected by the mobile phone shielding system.

[0087] To address this, the technical solution of the present invention uses the electromagnetic wave signal of the preset communication frequency band as the environmental signal and uses it to determine whether there is a shielding signal feature therein, thereby enabling the first smart terminal to execute step S300 only when the shielding signal covers the entire frequency band and will affect the preset communication frequency band. In the two cases where the mobile phone shielding system is not turned on or the mobile phone shielding system is turned on but the shielding signal does not cover the preset communication frequency band, the first smart terminal can still directly send synchronization information to all second smart terminals through the preset communication frequency band for multi-screen collaborative display, so that the first smart terminal does not need to send any request or information to the mobile phone shielding system in the case where the mobile phone shielding system is turned on but the shielding signal does not cover the preset communication frequency band, thereby reducing the invalid working condition adjustment performed by the mobile phone shielding system in response to the first smart terminal.

[0088] Optionally, refer to Figure 4 Step S120: Determine whether there is a shielding signal feature in the environmental signal, including:

[0089] Step S121: determining whether the signal power of the communication signal in the electromagnetic wave signal is greater than a preset signal power;

[0090] Step S122: If it is determined that the power is greater than the preset signal power, it is determined that there is a shielding signal feature in the environmental signal;

[0091] Step S123: If it is determined that the signal power is within the preset signal power, continue to determine whether there are two adjacent subcarriers in the electromagnetic wave signal whose signal interval is less than the preset signal interval;

[0092] Step S124: If the signal interval between two adjacent subcarriers is less than the preset signal interval, it is determined that the shielding signal feature exists in the environmental signal;

[0093] Step S125: If there is no signal interval between two adjacent subcarriers that is less than the preset signal interval, it is determined that there is no shielding signal feature in the environmental signal.

[0094] In this embodiment, the preset signal power can be obtained by pre-measuring the power fluctuations of a preset communication frequency band in a normal environment. Because mobile phone shielding systems typically set the shielding signal power extremely high to ensure shielding efficiency, if the shielding signal covers the preset communication frequency band, the power of the electromagnetic wave signal in that frequency band will exceed the preset signal power. Therefore, the first intelligent terminal can determine whether the shielding signal and its characteristics are present in the environmental signal.

[0095] Because some types of mobile phone shielding systems currently use signaling-level interference, the interference signals emitted by mobile phone shielding systems using this interference method can achieve good shielding effects even at low power. To further identify the shielding signals emitted by mobile phone shielding systems using signaling-level interference, this application provides step S123 to further identify the signal intervals of subcarriers in electromagnetic wave signals with signal powers less than or equal to a preset signal power. It should be noted that due to the interference principle of signaling-level mobile phone shielding systems (interfering with the downlink channel by self-generating pseudo-communication signals as shielding signals without any interference with the uplink channel), to ensure that its shielding signals can achieve good shielding effects, the signal intervals of the subcarriers in its shielding signals are usually smaller than the signal intervals of normal communication signals.

[0096] Based on this, the first intelligent terminal can determine whether there is a shielding signal in the electromagnetic wave signal by judging whether the signal interval of the subcarriers in the acquired electromagnetic wave signal is too small, that is, less than the preset signal interval. The preset signal interval can be determined by pre-measuring the minimum signal interval between two adjacent subcarriers in the wireless communication signal under normal circumstances. If the first intelligent terminal determines that there is a signal interval between two adjacent subcarriers that is less than the preset signal interval, it can be said that there is a shielding signal in the preset communication frequency band, that is, there is a shielding signal feature in the environmental signal; if the first intelligent terminal determines that there is no signal interval between two adjacent subcarriers that is less than the preset signal interval, that is, it determines that the signal interval between any two adjacent subcarriers is greater than or equal to the preset signal interval, it can be said that there is no shielding signal in the preset communication frequency band, that is, there is no shielding signal feature in the environmental signal.

[0097] In other words, in this embodiment, the shielding signal characteristics are a signal power exceeding a preset signal power and a signal interval between two adjacent subcarriers less than a preset signal interval.

[0098] The technology of the present invention screens and determines the electromagnetic wave signal by presetting the signal power and the signal interval, which can ensure the confirmation of the shielding signal characteristics possessed by the electromagnetic wave signal, thereby facilitating the improvement of the confirmation accuracy of the shielding signal characteristics.

[0099] Reference Figure 5 , the first communication rule includes switching characteristic signals and communication rules, the communication rules include the mobile phone shielding system shielding a first frequency band covered by the signal and a second frequency band not covered by the signal in each time unit, and the second frequency band is in a preset communication frequency band;

[0100] Step S400: Sending synchronization information to all second smart terminals based on the first communication rule, including:

[0101] Step S410: Determine whether the environmental signal has a switching feature;

[0102] Step S420: If the switching feature occurs, synchronization information is sent to all second smart terminals via the second frequency band in each time unit according to the first communication rule.

[0103] In this embodiment, the switching feature serves as a switching indicator for the mobile phone shielding system and the first smart terminal to simultaneously switch to operating according to the first communication rule. Specifically, the switching feature can be a specific electromagnetic wave signal emitted by the mobile phone shielding system that is not affected by the shielding signal, or it can be the shielding system suddenly ceasing to emit its unique electromagnetic wave signal.

[0104] Specifically, refer to Figure 6 Step S410: Determine whether the environmental signal has a switching feature, including:

[0105] Step S411: Determine whether the shielding signal feature disappears;

[0106] Step S412: If it is determined that the shielding signal feature disappears, determining whether the shielding signal feature appears again within a first preset time period;

[0107] Step S413: If it appears again, it is determined that the environmental signal has a switching feature;

[0108] Step S414: If it does not occur again, then send synchronization information to all second smart terminals via the preset communication frequency band.

[0109] In this embodiment, the mobile phone shielding system is configured to briefly pause transmitting the shielding signal when the switching is about to complete the first state, and resume transmitting the shielding signal when the switching is completed in the first working state; wherein the pause duration is less than the first preset duration.

[0110] The first smart terminal is configured to monitor in real time whether the shielding signal feature of the electromagnetic wave signal in the preset communication frequency band disappears, and can start timing after the shielding signal feature disappears to determine whether the shielding signal feature appears again before the timing reaches the first preset time. If it appears again, it means that there is a feature in the environmental signal and the mobile phone shielding system has been switched to the first working state. Therefore, the first smart terminal can also be synchronously switched to send synchronization information to the second smart terminal using the second frequency band corresponding to each time unit according to the first communication rule. Since the second frequency band is not covered by the shielding signal, multi-screen collaborative display of the first smart terminal and the second smart terminal can be achieved. If the shielding signal feature does not appear again, it means that the shielding system has closed or canceled the shielding of the preset communication frequency band due to other factors such as other factors. As a result, the electromagnetic wave signal in the preset communication frequency band does not have a shielding signal feature. In this case, the mobile phone shielding system will no longer affect the wireless communication of the preset communication frequency band. Therefore, the first smart terminal can directly switch to sending synchronization information to all second smart terminals through the preset communication frequency band.

[0111] The technical solution of the present invention uses the resumption of transmitting the shielding signal after a short pause as a switching feature, which can effectively reduce the difficulty of implementing the switching feature compared to allowing the mobile phone shielding system to emit a specific electromagnetic wave signal that is not affected by the shielding signal.

[0112] It is understandable that if the shielding signal feature has not disappeared, it means that the mobile phone shielding system is still in the process of internally switching to the first communication rule, and you just need to continue waiting.

[0113] Optionally, the second frequency bands corresponding to two adjacent time units are different. It should be noted that when a mobile phone terminal loses communication with a base station or router, it will continuously search for an available frequency band for communication. The technical solution of the present invention is configured in this way to prevent the second frequency bands corresponding to multiple consecutive time units from always being the same, thereby effectively reducing the probability of the mobile phone terminal communicating through the second frequency band, and further reducing the impact of the second frequency band on the shielding effect of the mobile phone shielding system.

[0114] Optionally, after step S400: sending synchronization information to all second smart terminals based on the first communication rule, the method further includes:

[0115] Step S500: Determine whether the duration of sending synchronization information to all second smart terminals according to the first communication rule reaches a second preset duration;

[0116] Step S600: If the second preset time period is reached, determining whether the display parameters of the main interface image meet the preset standards;

[0117] Step S700: If the preset standard is met, a second request instruction is sent to the mobile phone shielding system, and a second communication rule is returned by the mobile phone shielding system; the second communication rule is different from the first communication rule;

[0118] Step S800: updating the second communication rule to the first communication rule, and returning to step S300 of "determining whether the mobile phone shielding system is switched to the first working state".

[0119] In this embodiment, the first smart terminal may begin counting when transmitting a synchronization signal according to the first communication rule. When the count reaches a second preset duration, it determines whether the display parameters of the main interface image meet a preset standard. The preset standard indicates that the main interface image has not changed for a long period of time. If the preset standard is met, it indicates that the probability of the main interface image changing at this time is low, making it more suitable to switch the communication rule. In this case, the first smart terminal is configured to send a second request command to the mobile phone shielding system. After receiving the second request command, the mobile phone shielding system generates a new communication rule, namely the second communication rule, and returns it to the first smart terminal. Simultaneously, the mobile phone shielding system switches from the first communication rule to the second communication rule for shielding signal transmission.

[0120] It is understood that the second communication rule also includes a switching characteristic signal and a communication rule. The switching characteristic of the first communication rule may be consistent with the switching characteristic in the first communication rule, but the communication rule of the first communication rule is different from the communication rule in the first communication rule. Specifically, the second frequency band corresponding to each time unit in the second communication rule is different from the second frequency band corresponding to each time unit in the first communication rule. For example, the second frequency band corresponding to the first time unit in the second communication rule is different from the second frequency band corresponding to the first time unit in the first communication rule, and so on for the second frequency band corresponding to each time unit.

[0121] The first intelligent terminal may update the received second communication rule into the first communication rule and return to execute step S300 and subsequent steps. The specific implementation scheme of step S300 and subsequent steps may refer to the above embodiment and will not be described in detail here.

[0122] In this way, the technical solution of the present invention can update and switch the current first communication rule when the current first communication rule is used for a second preset time and the display parameters of the main interface image reach the preset standard, so that the first smart terminal and the mobile phone shielding system can respectively use the updated first communication rule to send synchronization information or transmit the shielding signal, thereby ensuring that the first smart terminal and the mobile phone shielding system will not use the same communication rule to work for a long time, thereby effectively reducing the impact on the mobile phone shielding effect.

[0123] Optionally, step S600: determining whether the display parameters of the main interface image meet preset standards includes:

[0124] Step S610: Determine whether the main interface image remains unchanged for a display time that reaches a third preset time length;

[0125] Step S620: If the third preset time period is reached, determining whether the display parameters of the main interface image meet the preset standards;

[0126] Step S630: If the third preset time period has not been reached, determining whether the display parameters of the main interface image meet the preset standards;

[0127] In this embodiment, the display parameter is the time during which the primary interface image remains unchanged, and the preset standard is the third preset duration. It is understood that if the primary interface image remains unchanged, the mirrored interface image will also remain unchanged, indicating that the current meeting content is not heavily dependent on the content displayed collaboratively by the first and second smart terminals, that is, the probability of the current primary interface image being updated is low, and in this case, step S700 can be executed.

[0128] It should be noted that in actual testing, it was found that when the mobile phone shielding system switches to operating according to the second communication rule, because the second communication rule is different from the first communication rule, if the main interface image is updated frequently at this time, the synchronization signal sent by the first smart terminal may be affected by the shielding signal after the communication rule is switched, which can easily cause the mirror interface image displayed by the second smart terminal to not be synchronized. The technical solution of the present invention can effectively reduce the impact of the communication rule switching process on collaborative display by confirming that the main interface image has remained unchanged for a third preset time period before executing step S700.

[0129] It can be understood that if the display time of the main interface image remains unchanged does not reach the third preset time length, that is, whether the display parameters of the main interface image meet the preset standards, the first smart terminal may temporarily not execute step S700 until the display time of the main interface image remains unchanged reaches the third preset time length.

[0130] The present invention also provides a smart terminal. Figure 7 , smart terminals include:

[0131] memory 11; and

[0132] The processor 12 stores a multi-screen collaborative display program in the memory 11 and is executed by the processor 12 . When the multi-screen collaborative display program is executed by the processor 12 , the multi-screen collaborative display method described above is implemented.

[0133] Among them, the specific steps of the multi-screen collaborative display method refer to the above-mentioned embodiments. Since the smart terminal adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The memory 11 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 11 can optionally be a storage device independent of the aforementioned smart terminal; the processor 12 can be a CPU. The memory 11 and the processor 12 are connected by a communication bus 13, which can be a UART bus or an I2C bus.

[0134] The above are only optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A multi-screen collaborative display method, characterized in that: Applied to a first smart terminal, the first smart terminal is wirelessly connected to at least one second smart terminal, and the first smart terminal is wiredly connected to a mobile phone shielding system, the first smart terminal is used to display a main interface image, and the second smart terminal is used to display a mirror interface image, the content of the mirror interface image is a mirror image of the main interface image, and the multi-screen collaborative display method includes: Determine whether the cell phone blocking system is on; If it is determined that the mobile phone shielding system is in the on state, the preset frequency band information and the first request instruction are sent to the mobile phone shielding system, and the first communication rule returned by the mobile phone shielding system is received; the preset frequency band information includes a preset communication frequency band for wireless communication between the first smart terminal and the second smart terminal, and the first communication rule is generated by the mobile phone shielding system based on the preset frequency band information; determining whether the mobile phone shielding system is switched to a first working state; wherein the first working state is a working state in which the mobile phone shielding system transmits a shielding signal according to the first communication rule; If it is determined that the mobile phone shielding system is switched to operate in accordance with the first communication rule, synchronization information is sent to all second smart terminals based on the first communication rule; the synchronization information is used to trigger the second smart terminals to update the mirror interface image; In which, the frequency band of the synchronization information is always different from that of the shielding signal, the first communication rule includes a communication law, and the communication law includes the first frequency band covered by the shielding signal and the second frequency band not covered by the shielding signal in each time unit of the mobile phone shielding system, and each of the second frequency bands is in the preset communication frequency band.

2. The multi-screen collaborative display method according to claim 1, wherein: The determining whether the mobile phone shielding system is in an on state includes: Detect environmental signals; Determine whether there is a shielding signal feature in the environmental signal; If the shielding signal characteristics exist in the environmental signal, it is determined that the mobile phone shielding system is in the on state; If the shielding signal feature does not exist in the environmental signal, it is determined that the mobile phone shielding system is in the off state.

3. The multi-screen collaborative display method according to claim 2, wherein: The detecting environment signal comprises: Obtaining preset communication frequency band information; the preset communication frequency band information includes a communication bandwidth and a center frequency point used for communicating with the second smart terminal; Based on the preset communication frequency band information, an electromagnetic wave signal in the environment within the preset communication frequency band is obtained as an environmental signal; The preset communication frequency band is a frequency band corresponding to the preset communication frequency band information.

4. The multi-screen collaborative display method according to claim 3, wherein: Determining whether the shielding signal feature exists in the environmental signal includes: determining whether the signal power of the communication signal in the electromagnetic wave signal is greater than a preset signal power; If it is determined that the power is greater than the preset signal power, it is determined that there is a shielding signal feature in the environmental signal; If it is determined that the signal power is within the preset signal power, further determining whether there are two adjacent subcarriers in the electromagnetic wave signal whose signal interval is less than the preset signal interval; If the signal interval between two adjacent subcarriers is less than the preset signal interval, it is determined that the shielding signal feature exists in the environmental signal; If there is no signal interval between two adjacent subcarriers that is less than the preset signal interval, it is determined that there is no shielding signal feature in the environmental signal.

5. The multi-screen collaborative display method according to claim 2, wherein: The first communication rule further includes a switching characteristic signal; The sending synchronization information to all second smart terminals based on the first communication rule includes: determining whether the environmental signal has a switching feature; If the switching feature occurs, synchronization information is sent to all second smart terminals via the second frequency band in each time unit according to the first communication rule.

6. The multi-screen collaborative display method according to claim 5, wherein: Determining whether the environmental signal has a switching feature includes: Determine whether the shielding signal characteristics disappear; If it is determined that the shielding signal feature disappears, determining whether the shielding signal feature appears again within a first preset time period; If it appears again, it is determined that the environmental signal has a switching feature; If it does not appear again, the synchronization information is sent to all second smart terminals via the preset communication frequency band.

7. The multi-screen collaborative display method according to claim 5, wherein: The second frequency bands corresponding to two adjacent time units are different.

8. The multi-screen collaborative display method according to claim 6, wherein: After sending synchronization information to all second smart terminals based on the first communication rule, the method further includes: Determining whether a duration for sending synchronization information to all second smart terminals according to the first communication rule reaches a second preset duration; If the second preset time is reached, determining whether the display parameters of the main interface image meet the preset standards; If the preset standard is met, a second request instruction is sent to the mobile phone shielding system, and a second communication rule is returned by the mobile phone shielding system; the second communication rule is different from the first communication rule; The second communication rule is updated to the first communication rule, and the process returns to the step of "determining whether the mobile phone shielding system is switched to the first working state".

9. The multi-screen collaborative display method according to claim 8, wherein: Determining whether the display parameters of the main interface image meet the preset standards includes: Determining whether the main interface image remains unchanged for a display time period reaching a third preset time period; If the third preset time is reached, it is determined that the display parameters of the main interface image meet the preset standards; If the third preset time period is not reached, it is determined that the display parameters of the main interface image do not meet the preset standards.

10. An intelligent terminal, characterized in that: The intelligent terminal includes: memory; and, A processor, a multi-screen collaborative display program stored on the memory and executed by the processor, wherein the multi-screen collaborative display program, when executed by the processor, implements the multi-screen collaborative display method according to any one of claims 1 to 9.

Images