A time calibration method

Abstract

The application provides a time calibration method, and relates to the technical field of electronic equipment, which comprises the following steps: when entering a starting mode, obtaining a historical time synchronization time and a system time; obtaining a first time difference according to the historical time synchronization time and the system time; obtaining a current compensation time according to the first time difference, a historical time deviation parameter and a historical compensation time; obtaining a compensated system time according to the system time and the current compensation time, and updating the historical compensation time to the current compensation time; if a time synchronization signal is received, obtaining an input time and the compensated system time, and updating the historical time deviation parameter according to the input time, the compensated system time and the historical time synchronization time, so that the method is more stable, accurate and adaptive to an offline environment.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a time calibration method. Background Art

[0002] Many electronic devices currently rely heavily on their built-in system time for daily operation. However, a common problem is that most of these devices are designed for offline operation, making it difficult to easily synchronize and calibrate their time over the network. System clocks are derived from crystal oscillators, but these vary widely across devices, and the crystals themselves also have certain deviations. This can lead to significant deviations between the system time and real-time time over time.

[0003] Faced with this problem, users often have to resort to the traditional method of manually adjusting the time to correct it. However, this measure only provides a temporary solution because the deviation will reappear over time, repeating the cycle, bringing inconvenience and challenges to the precise operation of the device and the user experience.

[0004] Therefore, there is an urgent need to design a time calibration method that is more stable, accurate and adaptable to offline environments. Summary of the Invention

[0005] The main purpose of the embodiments of the present application is to solve at least one of the technical problems existing in the prior art and to propose a time calibration method that is more stable, accurate and adaptable to offline environments.

[0006] To achieve the above objectives, in a first aspect, embodiments of the present invention provide a time calibration method, comprising:

[0007] When entering the boot mode, obtain the historical time and system time;

[0008] Obtaining a first time difference according to the historical time synchronization time and the system time;

[0009] Obtaining a current replenishment time based on the first time difference, the historical time deviation parameter, and the historical replenishment time;

[0010] Obtaining the compensated system time according to the system time and the current replenishment time, and updating the historical replenishment time to the current replenishment time;

[0011] If a time synchronization signal is received, the input time and the compensated system time are obtained and the historical time deviation parameter is updated according to the input time, the compensated system time and the historical time synchronization time.

[0012] According to a time calibration method provided by an embodiment of the present invention, in order to solve the problem of system time deviation in offline devices, the system time is automatically corrected by restarting the device. When entering the startup mode, the historical synchronization time and the system time are obtained, and a first time difference is obtained according to the historical synchronization time and the system time. The current supplementary time is obtained according to the first time difference, the historical time deviation parameter, and the historical supplementary time. The compensated system time is obtained according to the system time and the current supplementary time, and automatic correction of the system time is achieved. The historical supplementary time is updated to the current supplementary time, so that the system time can be readjusted at the next startup. In order to make the system time corrected after re-entering the startup mode, that is, the compensated system time, closer to the actual accurate time, the historical time deviation parameter can be updated according to the input time, the compensated system time, and the historical supplementary time, so that the historical time deviation parameter is more accurate, thereby making the system time corrected after restarting, that is, the compensated system time, closer to the actual accurate time.

[0013] In some embodiments, updating the historical time deviation parameter according to the input time, the compensated system time, and the historical synchronization time includes:

[0014] Obtaining a second time difference according to the input time and the compensated system time;

[0015] Obtaining a third time difference according to the historical time synchronization time and the compensated system time;

[0016] A current time deviation parameter is obtained according to the second time difference, the third time difference, and the historical time deviation parameter, and the historical time deviation parameter is updated to the current time deviation parameter.

[0017] In some embodiments, if the second time difference obtained according to the input time and the compensated system time exceeds a first preset value, the historical time deviation parameter is kept unchanged.

[0018] In some embodiments, obtaining the first time difference according to the historical time synchronization time and the system time includes:

[0019] ；

[0020] Wherein, ΔH1 is the first time difference, t1 is the system time, and t0 is the historical time synchronization time.

[0021] In some embodiments, obtaining the current supplementary time according to the first time difference, the historical time deviation parameter, and the historical supplementary time includes:

[0022]

[0023] Among them, tb1 is the current replenishment time, a0 is the historical time deviation parameter, tb0 is the historical replenishment time, and ΔH1 is the first time difference.

[0024] In some embodiments, the system time after compensation based on the system time and the current replenishment time includes:

[0025]

[0026] Wherein, tb1 is the current replenishment time, t1 is the system time, and ts is the system time after compensation.

[0027] In some embodiments, the method further includes obtaining the system display time based on the compensated system time, the running time, and the historical time deviation parameter.

[0028] In some embodiments, obtaining the current time deviation parameter according to the second time difference, the third time difference, and the historical time deviation parameter includes:

[0029]

[0030] Wherein, a1 is the current time deviation parameter, ΔH2 is the second time difference, ΔH3 is the third time difference, and a0 is the historical time deviation parameter.

[0031] In the second aspect, an embodiment of the present invention application proposes an operation control device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the time calibration method as described in any embodiment of the first aspect.

[0032] In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the time calibration method as described in any embodiment of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0035] Figure 1is a logical control flow chart of a time calibration method provided by the present application;

[0036] Figure 2 is a flow chart of re-adjusting a historical time deviation parameter in a time calibration method provided by the present application;

[0037] Figure 3 is another logical control flow chart of a time calibration method provided by the present application;

[0038] Figure 4 is a structure schematic diagram of a running control device provided by the present application. DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.

[0042] In the current market, many electronic devices highly depend on their built-in system time in daily operation. However, a common phenomenon is that these devices are mostly designed in offline mode and cannot conveniently synchronize and calibrate the time through the network. The system clock is derived from the crystal oscillator, but the crystal oscillators of various devices are uneven, and the crystal oscillator itself also has a certain deviation, which leads to a serious deviation between the system time and the real time after a long time.

[0043] In the face of this problem, users often have to take the traditional method of manually adjusting the time to correct it, but this measure can only provide a temporary solution, because as time goes on, the deviation will appear again and again, which brings inconvenience and challenge to the accurate operation of the device and the user experience.

[0044] Based on this, the embodiments of the present application provide a time calibration method, which is more stable, accurate and suitable for offline environment.

[0045] The embodiments of the present application are further described below in combination with the drawings.

[0046] In the first aspect, the present invention proposes a time calibration method, referring to Figure 1 , including steps S110-S140:

[0047] Step S110: When entering the boot mode, obtain the historical time synchronization time and system time;

[0048] Step S120: Obtaining a first time difference based on the historical synchronization time and the system time;

[0049] Step S130: obtaining the current replenishment time according to the first time difference, the historical time deviation parameter, and the historical replenishment time;

[0050] It should be noted that if the device enters the power-on mode for the first time, the historical synchronization time obtained is the synchronization time stored in the production synchronization, the historical supplement time is zero, and the historical time deviation parameter is the time deviation parameter data stored in the production synchronization.

[0051] Step S140: Obtain the compensated system time according to the system time and the current replenishment time, and update the historical replenishment time to the current replenishment time.

[0052] If a time synchronization signal is received, the input time and the compensated system time are obtained and the historical time deviation parameter is updated according to the input time, the compensated system time and the historical time synchronization time.

[0053] It can be understood that as the historical time deviation parameters are continuously updated, during a new round of automatic system time correction at startup, the current supplementary time is obtained based on the first time difference, the historical time deviation parameters, and the historical supplementary time. Among them, the current supplementary time is closer to the deviation value between the system time and the actual accurate time than before the historical time deviation parameters are updated. Based on this, the system time after compensation based on the system time and the current supplementary time is also closer to the actual accurate time.

[0054] It should be noted that if the user sets a new system time through manual synchronization, such as through a program operation on the interface of an electronic device, the system will receive a synchronization signal, obtain the input time and the compensated system time, and update the historical time deviation parameter based on the input time, the compensated system time, the historical supplementary time, and the historical time deviation parameter. In addition, after the historical time deviation parameter is updated, the historical supplementary time is updated to zero and the historical synchronization time and the compensated system time are updated to the input time.

[0055] According to a time calibration method provided by an embodiment of the present invention, in order to solve the problem of system time deviation in offline devices, the system time is automatically corrected by restarting the device. When entering the startup mode, the historical synchronization time and the system time are obtained, and a first time difference is obtained according to the historical synchronization time and the system time. The current supplementary time is obtained according to the first time difference, the historical time deviation parameter, and the historical supplementary time. The compensated system time is obtained according to the system time and the current supplementary time, and automatic correction of the system time is achieved. The historical supplementary time is updated to the current supplementary time, so that the system time can be readjusted at the next startup. In order to make the system time corrected after re-entering the startup mode, that is, the compensated system time, closer to the actual accurate time, the historical time deviation parameter can be updated according to the input time, the compensated system time, and the historical supplementary time, so that the historical time deviation parameter is more accurate, thereby making the system time corrected after restarting, that is, the compensated system time, closer to the actual accurate time.

[0056] In some embodiments, the historical time deviation parameter is updated according to the input time, the compensated system time and the historical time synchronization time, referring to Figure 2 , including steps S210-S230:

[0057] Step S210: Obtaining a second time difference based on the input time and the compensated system time;

[0058] Step S220: Obtaining a third time difference based on the historical synchronization time and the compensated system time;

[0059] Step S230: obtaining a current time deviation parameter according to the second time difference, the third time difference and the historical time deviation parameter, and updating the historical time deviation parameter to the current time deviation parameter.

[0060] It is understandable that after the device passes through the power-on mode, the system time becomes the compensated system time, and the compensated system time is continuously updated as the device runs.

[0061] It is understandable that the initially stored historical time deviation parameters may not be accurate enough. After entering the power-on mode, the system time is corrected. After running for a period of time, the power-on mode is entered again. It is found that the corrected system time will still deviate from the actual accurate time. In order to solve this problem, the historical time deviation parameters can be continuously readjusted to make the historical time deviation parameters more accurate, and further make the corrected system time after entering the power-on mode again closer to the actual accurate time.

[0062] In some embodiments, if the second time difference obtained according to the input time and the compensated system time exceeds the first preset value in step S210, the historical time deviation parameter remains unchanged.

[0063] Preferably, the first preset value is 1h. When the second time difference between the input time and the compensated system time exceeds 1h, the historical time deviation parameter is kept unchanged. On the one hand, it can prevent the incorrect time input from causing the incorrect calculation of the historical time deviation parameter; on the other hand, it can also prevent the historical time deviation parameter from being abnormal due to re-adjustment after replacing the battery and starting up the computer.

[0064] In some embodiments, obtaining the first time difference based on the historical time synchronization time and the system time includes:

[0065] ；

[0066] Among them, △H1 is the first time difference, t1 is the system time, and t0 is the historical time synchronization time.

[0067] In some embodiments, obtaining the current supplementary time according to the first time difference, the historical time deviation parameter, and the historical supplementary time in step S130 includes:

[0068]

[0069] Among them, tb1 is the current filling time, a0 is the historical time deviation parameter, tb0 is the historical filling time, and △H1 is the first time difference.

[0070] It should be noted that the historical time deviation parameter is set based on the deviation data between the system time and the actual accurate time obtained through preliminary experiments on the device. For example, if the average daily deviation between the system time and the actual accurate time of the device is 3 seconds, the historical time deviation parameter a0 is set to 3 / 24. The unit of the historical time deviation parameter is s / h.

[0071] It can be understood that when the equipment enters the production time synchronization stage, the pre-stored historical supplement time is 0. If the equipment works for one day, the deviation between its system time and the actual accurate time is 3s. If the system time is not automatically corrected during this period, after 30 days, the system time will be 90s different from the actual accurate time. If the equipment enters the power-on mode on the 10th day, the first time difference obtained based on the historical time synchronization time and the system time is 10 days, and the current supplement time tb1 is 30s based on the first time difference, the historical time deviation parameter, and the historical supplement time. Among them, the corresponding a0 is 3 / 24 and △H1 is 10 x24 and tb0 are 0. After obtaining the current supplementary time, the data of the historical supplementary time tb0 is updated to the data of the current supplementary time. If the power-on mode is entered again on the 20th day, the first time difference of 20 days is obtained according to the historical time synchronization time and the system time, and the current supplementary time tb1 of 30s is obtained according to the first time difference, the historical time deviation parameter, and the new historical supplementary time, wherein the corresponding a0 is 3 / 24, △H1 is 20x 24, and tb0 is 30s. After obtaining the current supplementary time, the data of the historical supplementary time tb0 is updated to the data of the current supplementary time. As the power-on mode is continuously entered, the data of the historical supplementary time is continuously updated to ensure that the compensated system time is close to the actual accurate time each time after the power-on mode.

[0072] In some embodiments, the compensated system time obtained according to the system time and the current replenished time in step S140 includes:

[0073]

[0074] Among them, tb1 is the current replenishment time, t1 is the system time, and ts is the system time after compensation.

[0075] It can be understood that if the device's system time deviates from the actual accurate time by 3 seconds per day, the deviation will be 30 seconds on the 10th day. If the device enters power-on mode for the first time on the 10th day, the first time difference is 10 days based on the historical time synchronization time and the system time. The current compensation time tb1 is 30 seconds based on the first time difference, the historical time deviation parameter, and the historical compensation time. The corresponding a0 is 3 / 24, △H1 is 10 x 24, and tb0 is 0. Then, if the device's system time is 3 seconds faster than the actual accurate time every day, the current compensation time tb1 is 30 seconds. If the device's system time is 3 seconds slower than the actual accurate time every day, the current compensation time tb1 is -30 seconds. Based on the difference between the actual accurate time and the device's system time, the system time after compensation is calculated based on the system time and the current compensation time to meet the needs of different offline devices.

[0076] In some embodiments, the method further includes obtaining a system display time based on the compensated system time, the elapsed running time, and the historical time deviation parameter, wherein the system display time is obtained according to the following formula:

[0077]

[0078] Where t is the system display time, ts is the compensated system time, a0 is the historical time deviation parameter, and tr is the elapsed time.

[0079] It is understandable that if the system time of the device deviates from the actual accurate time every day, the system time will be automatically corrected or compensated after the device enters the power-on mode to obtain a compensated system time that is close to the actual accurate time. However, due to the deviation of the crystal oscillator of the device itself, the system time after automatic correction or compensation will still deviate after running for a period of time, so it is necessary to perform a time compensation operation in the system display time.

[0080] It should be noted that the deviation time is obtained based on the elapsed time and the historical time deviation parameters. If the system time of the device deviates by 3 seconds from the actual accurate time after one day of operation, the elapsed time tr is 1x24x3600 (that is, 1 day), and a0 is set to 3 / 24, the deviation time is 3 seconds. The elapsed time is the difference between the current compensated system time of the device and the initial compensated system time obtained after the device is powered on.

[0081] It can be understood that if the system time of the device deviates from the actual accurate time by 3s every day, the compensated system time ts is set to the difference between the system time t1 and the currently added time tb1, and the system display time is also the difference between the compensated system time ts and the deviation time. The system display time is obtained according to the compensated system time, the historical time deviation parameter and the running time, so that the system display time can automatically compensate and display the accurate time during the operation of the device.

[0082] In some embodiments, obtaining the current time deviation parameter according to the second time difference, the third time difference, and the historical time deviation parameter in step S230 includes:

[0083]

[0084] Among them, a1 is the current time deviation parameter, △H2 is the second time difference, △H3 is the third time difference, and a0 is the historical time deviation parameter.

[0085] It can be understood that the second time difference is the difference between the input time and the system time.

[0086] It is understandable that the initially stored historical time deviation parameters may not be accurate enough. For example, after entering the power-on mode, the system time is corrected, and after running for a period of time, the power-on mode is entered again. The corrected system time still deviates from the actual accurate time. In order to solve this problem, the historical time deviation parameters are readjusted, that is, the current time deviation parameters are obtained according to the time deviation, time difference and historical time deviation parameters, and the data of the current time deviation parameters are updated to the historical time deviation parameters, so that the system time corrected after entering the power-on mode, that is, the compensated system time, is closer to the actual accurate time. Specifically, if the device runs for 30 days After entering the power-on mode, the user finds that there is still a deviation between the compensated system time and the actual accurate time. The user sets the new system time manually, such as through the program operation of the electronic device interface. The system will receive the time synchronization signal. If the time synchronization signal is received, the input time and the compensated system time are obtained. If the input time is 3s slower than the compensated system time, the corrected system time is still 3s faster than the actual accurate time. According to the input time and the compensated system time, the second time difference △H2 is -3s. According to the historical time synchronization time and the compensated system time, the third time difference △H3 is 30x24 According to the second time difference, the third time difference and the historical time deviation parameter, the current time deviation parameter a1 is obtained to be 0.129, wherein a0 is 3 / 24; when entering the power-on mode next time, the data of the historical time deviation parameter a0 is the updated 0.129, and the system time is corrected according to the updated historical time deviation parameter. The corrected system time, i.e., the compensated system time, is closer to the actual accurate time. Moreover, as the number of iterations of the historical time deviation parameter increases, the compensated system time is closer and closer to the actual accurate time, and the system display time is also closer and closer to the actual accurate time. Compared with the traditional manual time calibration method, the accuracy of the system time and the system display time is improved while also improving the user experience.

[0087] Below, a more detailed embodiment is given to illustrate the time calibration method proposed in this application, referring to Figure 3 , including steps S310 to S540:

[0088] Step S310: When entering the boot mode, obtain the historical time synchronization time and system time;

[0089] Step S320: Obtaining a first time difference based on the historical synchronization time and the system time;

[0090] Step S330: obtaining the current replenishment time according to the first time difference, the historical time deviation parameter, and the historical replenishment time;

[0091] Step S340: Obtain the compensated system time according to the system time and the current replenishment time, and update the historical replenishment time to the current replenishment time.

[0092] Step S350: Determine whether the timing signal is received. If not, continue normal operation. If received, jump to step S410.

[0093] Step S410: Obtain input time and compensated system time;

[0094] Step S420: Obtaining a second time difference based on the input time and the compensated system time;

[0095] Step S430: Obtaining a third time difference based on the historical synchronization time and the compensated system time;

[0096] Step S440: obtaining a current time deviation parameter according to the second time difference, the third time difference, and the historical time deviation parameter, and updating the historical time deviation parameter to the current time deviation parameter;

[0097] Step S450: updating the historical supplementary time to zero and updating the historical time synchronization time and the compensated system time to the input time;

[0098] Step S510: When entering the boot mode again, obtain new historical time and system time;

[0099] Step S520: Obtain a first time difference based on the new historical synchronization time and the system time;

[0100] Step S530: Obtaining the current supplement time according to the first time difference, the new historical time deviation parameter, and the new historical supplement time;

[0101] Step S540: Obtain the compensated system time according to the system time and the current replenishment time, and update the historical replenishment time to the current replenishment time.

[0102] In the second aspect, the present invention proposes an operation control device 600, referring to Figure 4 , including a memory 610, a processor 620, and a computer program stored in the memory 610 and executable on the processor 620, the processor 620 executing the program to implement a time calibration method as in any one of the embodiments of the first aspect.

[0103] In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer-executable instructions. The computer-executable instructions are used to enable a computer to execute a time calibration method as in any one of the embodiments of the first aspect.

[0104] It is to be understood that, although each step in each flow chart in the embodiment of the present application is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is clear explanation in the present embodiment, the execution of these steps does not have strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the above flow chart can include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of the steps or stages in other steps or other steps.

[0105] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0106] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0107] It should also be understood that the various implementation methods provided in the embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0108] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the art can also make various equivalent modifications or substitutions under the shared conditions that do not violate the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A time calibration method, characterized in that: include: When entering the boot mode, obtain the historical time and system time; Obtaining a first time difference according to the historical time synchronization time and the system time; Obtaining a current replenishment time based on the first time difference, the historical time deviation parameter, and the historical replenishment time; Obtaining the compensated system time according to the system time and the current replenishment time, and updating the historical replenishment time to the current replenishment time; Wherein, if a time synchronization signal is received, the input time and the compensated system time are obtained and the historical time deviation parameter is updated according to the input time, the compensated system time and the historical time synchronization time; in: The updating of the historical time deviation parameter according to the input time, the compensated system time, and the historical time synchronization time includes: Obtaining a second time difference according to the input time and the compensated system time; Obtaining a third time difference according to the historical time synchronization time and the compensated system time; A current time deviation parameter is obtained according to the second time difference, the third time difference, and the historical time deviation parameter, and the historical time deviation parameter is updated to the current time deviation parameter.

2. The time calibration method according to claim 1, wherein: If the second time difference obtained according to the input time and the compensated system time exceeds a first preset value, the historical time deviation parameter is kept unchanged.

3. The time calibration method according to claim 1, characterized in that: The obtaining a first time difference according to the historical time synchronization time and the system time includes: ； Wherein, ΔH1 is the first time difference, t1 is the system time, and t0 is the historical time synchronization time.

4. The time calibration method according to claim 1, wherein: The obtaining of the current supplementary time according to the first time difference, the historical time deviation parameter, and the historical supplementary time includes: Among them, tb1 is the current replenishment time, a0 is the historical time deviation parameter, tb0 is the historical replenishment time, and ΔH1 is the first time difference.

5. The time calibration method according to claim 1, wherein: The system time after compensation based on the system time and the current replenishment time includes: Wherein, tb1 is the current replenishment time, t1 is the system time, and ts is the system time after compensation.

6. The time calibration method according to claim 1, wherein: The method further includes obtaining the system display time according to the compensated system time, the running time and the historical time deviation parameter.

7. The time calibration method according to claim 1, wherein: The obtaining of the current time deviation parameter according to the second time difference, the third time difference, and the historical time deviation parameter includes: Wherein, a1 is the current time deviation parameter, ΔH2 is the second time difference, ΔH3 is the third time difference, and a0 is the historical time deviation parameter.

8. An operation control device, characterized in that: The device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the time calibration method according to any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the time calibration method according to any one of claims 1 to 7.

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