CN112099567A - Time calibration method, electronic device and storage medium - Google Patents
Time calibration method, electronic device and storage medium Download PDFInfo
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- CN112099567A CN112099567A CN202011181455.XA CN202011181455A CN112099567A CN 112099567 A CN112099567 A CN 112099567A CN 202011181455 A CN202011181455 A CN 202011181455A CN 112099567 A CN112099567 A CN 112099567A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/12—Synchronisation of different clock signals provided by a plurality of clock generators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/14—Time supervision arrangements, e.g. real time clock
Abstract
The embodiment of the invention relates to the field of computers, and discloses a time calibration method, electronic equipment and a storage medium. In the invention, the method is applied to equipment and comprises the following steps: performing time synchronization, and caching data generated during the time synchronization and the generation time of the data; acquiring synchronous time, and storing the synchronous time and the current time of the equipment when the synchronous time is acquired; calibrating the generation time of the data according to the synchronization time and the current time of the equipment. In this way, the accuracy of the generation time of the saved data can be improved.
Description
Technical Field
The embodiment of the invention relates to the field of computers, in particular to a time calibration method, electronic equipment and a storage medium.
Background
Currently, most devices save the generated data and save the time of generating the data at the same time so as to process and analyze the data. In practical applications, a device may encounter a time error caused by the System time not being calibrated in time, and the device generally acquires the correct time through time synchronization via a network or a Global Positioning System (GPS).
However, the time for the device to perform time synchronization may be long, some data may be generated during the time synchronization, and the time for generating data stored in the device is an error time, and the processing and analysis of the data may be affected by directly using the error time. For example: when the power supply of the machine is turned off at night in the market, if the standby battery of the machine is in a dead state, the machine enters a shutdown state and the real-time clock in the machine stops running, and when the machine is restarted, the time of the machine is wrong, and the machine performs time synchronization; in the process of time synchronization, if a user borrows a shared power bank to generate corresponding data, the time for generating the data stored at this time is wrong time.
Disclosure of Invention
An embodiment of the present invention provides a time calibration method, an electronic device, and a storage medium, which can improve accuracy of generation time of stored data.
In order to solve the above technical problem, an embodiment of the present invention provides a time calibration method applied to a device, where the method includes: performing time synchronization, and caching data generated during the time synchronization and the generation time of the data; acquiring synchronous time, and storing the synchronous time and the current time of the equipment when the synchronous time is acquired; calibrating the generation time of the data according to the synchronization time and the current time of the equipment.
An embodiment of the present invention further provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor; the at least one processor executes the instructions to perform the time alignment method described above.
Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which when executed by a processor implements the time alignment method described above.
Compared with the prior art, the method and the device have the advantages that the device carries out time synchronization and caches data generated during the time synchronization and the generation time of the data; storing the obtained synchronization time and the current time of the equipment when the synchronization time is obtained; the generation time of the calibrated data can be obtained according to the synchronous time and the generation time of the current time calibration data of the equipment, and the generation time of the data is correct time, so that the accuracy of the generation time of the stored data is improved.
Additionally, after said calibrating the generation time of the data according to the synchronization time and the current time of the device, the method further comprises: and sending the data and the generation time of the calibrated data to a server. Since the device does not directly transmit the generated data and the generation time of the data to the server during the time synchronization, but transmits the data and the generation time of the calibrated data to the server after the generation time of the calibration data, it is possible to increase the possibility that the generation time of the data received by the server is the correct time.
Additionally, prior to said calibrating the generation time of said data based on said synchronization time and the current time of said device, said method further comprises: starting timing to form timing duration when the time synchronization is carried out; judging whether the timing time length exceeds a preset time length or not; if the timing time does not exceed the preset time, judging whether the synchronization time is obtained; and if the synchronous time is obtained, the step of calibrating the generation time of the data according to the synchronous time and the current time of the equipment is carried out. By the method, the device can calibrate the generation time of the data only when the synchronization time is acquired and the timing duration does not exceed the preset duration, so that the workload is reduced.
In addition, after starting to count a forming timing length when the data is generated, the method further includes: and if the timing duration exceeds a preset duration, sending the data and the generation time of the data to a server, and informing the server that the generation time of the data is uncalibrated time. By the method, the situation that the device does not upload data to the server for a long time is avoided, and the server can acquire the data and know that the time for generating the data is uncalibrated time.
Additionally, prior to the time synchronizing, the method further comprises: when the equipment is switched from the power-off state to the power-on state, judging whether the real-time clock is in the running state when the equipment is in the power-off state, and if the real-time clock is in the non-running state, entering the step of time synchronization. When the equipment is switched from the power-off state to the power-on state, the time synchronization is performed only when the real-time clock is in the non-running state when the equipment is in the power-off state, so that the time synchronization is avoided when the time is correct, and the workload is reduced.
In addition, the determining the state of the real-time clock when the device is in the shutdown state includes: judging whether the last time of shutdown of the equipment is the same as the time of startup of the equipment, if so, indicating that the real-time clock is in a non-running state; or, judging whether a backup voltage of a backup battery for supplying power to the real-time clock is zero when the device is shut down, and if the backup voltage is zero, indicating that the real-time clock is in a non-running state. By the method, the state of the real-time clock during the shutdown of the equipment can be accurately determined.
Additionally, said calibrating said time to generate said data based on said synchronization time and a current time of said device comprises: calculating the difference value between the current time of the equipment and the generation time of the data to obtain an intermediate value; and calculating the difference value between the synchronous time and the intermediate value to obtain the generation time of the calibrated data. By the method, the time for generating the data after calibration can be accurately acquired.
In addition, after the saving the synchronization time and the acquiring the current time of the device, the method further includes: changing a current time of the device to the synchronization time. By the method, the equipment completes time synchronization, and the current time of the equipment is accurate time.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a flow chart of a time alignment method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method of time alignment according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a time alignment method according to a third embodiment of the present invention;
FIG. 4 is a flow chart of a time alignment method according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device in a fifth embodiment according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
A first embodiment of the present invention relates to a time calibration method applied to a device, for example: provided are a device for sharing a power bank, a massage chair, a vehicle-mounted tracking device and the like. The specific process is shown in fig. 1, and comprises the following steps:
Specifically, the devices perform time synchronization by a Global Positioning System (GPS) or time synchronization by a modem (modem). Since it takes a certain time for the device to perform time synchronization, but data may be generated at this time, if data is generated during the time synchronization of the device, the generated data and the generation time of the data are buffered in the device; wherein, the generation time of the data is the time of the device when the data is generated. For example: the time synchronization is carried out on the equipment providing the shared charger pal, and when the time of the equipment is A, a user rents the shared charger pal, and at the moment, the generated renting data and the generation time A of the renting data are cached in the equipment; for example: the vehicle-mounted tracking system is performing time synchronization, and if the sensor of the vehicle-mounted tracking system acquires the relevant data, the generated data and the generation time of the data are cached in a server of the vehicle-mounted tracking system.
In one example, time synchronization is performed according to a preset period. Since the crystal oscillator of the real-time clock may be affected by the environment, the time of the device may deviate along with the operation of the device, so that time synchronization may be performed according to a preset period, and the preset period may be set according to actual needs, which is not specifically limited in this embodiment.
And 102, acquiring the synchronization time, and storing the synchronization time and the current time of the equipment when the synchronization time is acquired.
Specifically, the synchronization time sent by the GPS or the modem is received, and after the synchronization time is acquired, the current time of the device is not changed to the synchronization time immediately, but the synchronization time and the current time of the device when the synchronization time is acquired are saved.
In one example, after saving the synchronization time and obtaining the current time of the device at the time of the synchronization time, the method further comprises: the current time of the device is changed to the synchronized time. For example: and if the synchronization time is B and the current time of the equipment is C when the synchronization time is obtained, changing the current time of the equipment from C to B.
In one example, after the synchronization time is saved and the current time of the device when the synchronization time is obtained, the synchronization time is obtained according to a preset period, whether the deviation between the obtained synchronization time and the current time of the device exceeds a preset value or not is judged, if the deviation exceeds the preset value, the current time of the device is changed into the synchronization time, and if the deviation does not exceed the preset value, the current time of the device does not need to be changed, and the synchronization time is continuously obtained according to the preset period; the preset value may be set according to actual needs, and may be 1 second, 3 seconds, and the like, and this embodiment is not particularly limited. By the method, the deviation between the current time and the synchronous time of the equipment is small in the process of long-time operation of the equipment.
In one example, during time synchronization, the time of the device is set to an identification with which the time of the device has not been calibrated, and the identification is cleared after the current time of the device has changed to the synchronized time.
Specifically, the device calibrates the generation time of the buffered data according to the synchronization time and the current time of the device, and may calculate the generation time of the calibrated data by using a preset algorithm.
In one example, calibrating the time at which data is generated based on the synchronization time and the current time of the device comprises: calculating the difference value between the current time of the equipment and the generation time of the data to obtain an intermediate value; and calculating the difference value between the synchronous time and the intermediate value to obtain the generation time of the calibrated data. For example: and A is the generation time of the data, B is the synchronization time, C is the current time of the equipment, D is the generation time of the calibrated data, and D is B- (C-A). By the method, the time for generating the data after calibration can be accurately acquired.
In this embodiment, the device performs time synchronization, and buffers data generated during the time synchronization and generation time of the data; storing the obtained synchronization time and the current time of the equipment when the synchronization time is obtained; the generation time of the calibrated data can be obtained according to the synchronous time and the generation time of the current time calibration data of the equipment, and the generation time of the data is correct time, so that the accuracy of the generation time of the stored data is improved.
A second embodiment of the present invention relates to a time calibration method, the second embodiment being substantially the same as the first embodiment, with the main difference that: and sending the data and the generation time of the calibrated data to a server. The specific flow chart is shown in fig. 2, and includes:
The steps 201-203 are similar to the steps 101-103 in the first embodiment, and are not described herein again.
Specifically, after acquiring the generation time of the calibrated data, the device may directly send the data and the generation time of the calibrated data to the server; the generation time of the data and the calibrated data can be sent to the server according to a preset period, and the server processes and analyzes the data according to the received data and the generation time of the calibrated data; the preset period may be set according to actual needs, and this implementation is not specifically limited.
In one example, the data generated after the synchronization time is acquired and the generation time of the data may be directly transmitted to the server; or the data can be cached in the equipment first and sent to the server by the equipment according to a preset period.
In this embodiment, during the time synchronization, the generated data and the generation time of the data are not directly transmitted to the server, but the data and the generation time of the calibrated data are transmitted to the server after the generation time of the calibration data, so that the possibility that the generation time of the data received by the server is the correct time can be improved.
A third embodiment of the present invention relates to a time calibration method, which is substantially the same as the first embodiment, with the main difference that: and starting timing to form a timing duration when time synchronization is carried out. The specific flow chart is shown in fig. 3, and includes:
Specifically, the device may count with a timer or the like to obtain a count time period, start counting at the time of performing time synchronization to form a count time period, and buffer data generated during the time synchronization and the generation time of the data.
Step 302, determining whether the timing duration exceeds a preset duration. If the timing duration does not exceed the preset duration, the step 303 is entered, and if the timing duration exceeds the preset duration, the step 306 is entered.
The generation time of the data is calibrated 305 based on the synchronization time and the current time of the device.
Specifically, the device judges whether the timing duration exceeds the preset duration in real time or according to a preset period, continues time synchronization and judges whether synchronization time is acquired only when the timing duration does not exceed the preset duration, stores the synchronization time and the current time of the device when the synchronization time is acquired, calibrates the generation time of data according to the synchronization time and the current time of the device, stops time synchronization when the timing duration exceeds the preset duration, directly sends the cached data and the generation time of the data to the server, and informs the server that the generation time of the data is not calibrated; the preset period and the preset duration may be set according to actual needs, and this embodiment is not particularly limited. In one example, the generation time of the data may be represented as an uncalibrated time by setting an identification. By the method, the equipment can calibrate the generation time of the data only when the synchronization time is acquired and the timing duration does not exceed the preset duration, so that the workload is reduced; and the device is prevented from not uploading data to the server for a long time, so that the server can acquire the data and know that the time for generating the data is uncalibrated time.
In one example, after saving the synchronization time and obtaining the current time of the device at the time of the synchronization time, the method further comprises: the current time of the device is changed to the synchronized time.
In one example, after the time of generation of the calibration data based on the synchronization time and the current time of the device, the method further comprises: and sending the data and the generation time of the calibrated data to a server. In this embodiment, the device may calibrate the generation time of the data only when the synchronization time is obtained and it is detected that the timing duration does not exceed the preset duration, thereby reducing the workload.
A fourth embodiment of the present invention relates to a time calibration method, and is substantially the same as the first embodiment, with the main difference that: before time synchronization, the equipment is detected to be switched from a power-off state to a power-on state, and the real-time clock is detected not to be in a running state when the equipment is in the power-off state. The specific flow chart is shown in fig. 4, and includes:
Specifically, when the device is in the power-off state, the real-time clock of the device may be in the running state or the non-running state. If the real-time clock is in the running state, the time of the device is correct time, and the data and the generation time of the data are directly sent to the server without time synchronization, that is, step 405; if the real-time clock is not running, the time of the device may be incorrect, and time synchronization is required.
In one example, determining whether the real-time clock is in an active state while the device is in the off state includes: judging whether the last time of shutdown of the equipment is the same as the time of startup of the equipment or not, and if the last time of shutdown of the equipment is the same as the time of startup of the equipment, indicating that the real-time clock is in a non-running state; or, judging whether the voltage of a backup battery for supplying power to the real-time clock is zero when the equipment is shut down, and if the voltage of the backup battery is zero, indicating that the real-time clock is in a non-running state.
Specifically, the last time of shutdown of the device is stored in the local of the device, when the device is started, the last time of startup of the device is acquired, the last time of shutdown of the device is acquired from the local, the last time of shutdown of the device is compared with the last time of startup of the device, and when the last time of shutdown of the device is the same as the last time of startup of the device, the device is in a shutdown state and the real-time clock is in a non-running state; or, judging the voltage of a backup battery for supplying power to the real-time clock when the device is powered off, and when the voltage of the backup battery is zero, indicating that the real-time clock is in a non-running state when the device is in a powered off state. When the time for starting the equipment is longer than the last time for shutting down the equipment and the standby voltage of the real-time clock is not zero, the real-time clock is in a running state when the equipment is in a shutdown state. By the method, the state of the real-time clock during the shutdown of the equipment can be accurately determined.
The generation time of the data is calibrated 404 based on the synchronization time and the current time of the device.
Steps 402-404 are similar to steps 101-103 in the first embodiment, and will not be described herein again.
In one example, after saving the synchronization time and obtaining the current time of the device at the time of the synchronization time, the method further comprises: the current time of the device is changed to the synchronized time.
In one example, after the time of generation of the calibration data based on the synchronization time and the current time of the device, the method further comprises: and sending the data and the generation time of the calibrated data to a server.
In one example, prior to the time of generation of the calibration data based on the synchronization time and the current time of the device, the method further comprises: starting timing to form timing duration when time synchronization is carried out; judging whether the timing time length exceeds a preset time length or not; if the timing time does not exceed the preset time, judging whether the synchronization time is obtained; and if the synchronous time is obtained, the step of calibrating the generation time of the data according to the synchronous time and the current time of the equipment is carried out.
In this embodiment, when the device is switched from the power-off state to the power-on state, time synchronization is performed only when it is detected that the real-time clock is not in the running state when the device is in the power-off state, so that time synchronization is prevented from being performed even when the time is correct, and workload is reduced.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A fifth embodiment of the invention relates to an electronic device, shown in fig. 5, comprising at least one processor 502; and, a memory 501 communicatively coupled to the at least one processor; the memory 501 stores instructions executable by the at least one processor 502, and the at least one processor 502 executes the instructions stored in the memory 501 to perform the embodiments of the time alignment method described above.
Where the memory and processor are connected by a bus, the bus may comprise any number of interconnected buses and bridges, the buses connecting together one or more of the various circuits of the processor and the memory. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor.
The processor is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory may be used to store data used by the processor in performing operations.
A sixth embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The computer program realizes the above-described method embodiments when executed by a processor.
That is, as can be understood by those skilled in the art, all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A time calibration method is applied to equipment, and the method comprises the following steps:
performing time synchronization, and caching data generated during the time synchronization and the generation time of the data;
acquiring synchronous time, and storing the synchronous time and the current time of the equipment when the synchronous time is acquired;
calibrating the generation time of the data according to the synchronization time and the current time of the equipment.
2. The time calibration method according to claim 1, wherein after said calibrating the generation time of said data based on said synchronization time and the current time of said device, said method further comprises:
and sending the data and the generation time of the calibrated data to a server.
3. The time calibration method according to claim 1 or 2, wherein before said calibrating the generation time of said data based on said synchronization time and the current time of said device, said method further comprises:
starting timing to form timing duration when the time synchronization is carried out;
judging whether the timing time length exceeds a preset time length or not;
if the timing time does not exceed the preset time, judging whether the synchronization time is obtained;
and if the synchronous time is obtained, entering the step of storing the synchronous time and the current time of the equipment when the synchronous time is obtained.
4. The time calibration method according to claim 3, wherein after starting the timer-forming timing length when generating the data, the method further comprises:
and if the timing duration exceeds a preset duration, sending the data and the generation time of the data to a server, and informing the server that the generation time of the data is uncalibrated time.
5. The method of time calibration according to claim 1, wherein prior to said time synchronizing, said method further comprises:
when the equipment is switched from a power-off state to a power-on state, judging whether a real-time clock is in an operating state when the equipment is in the power-off state;
and if the real-time clock is in a non-running state, entering the step of time synchronization.
6. The method of claim 5, wherein the determining whether the real-time clock is running while the device is in the power-off state comprises:
judging whether the last time of shutdown of the equipment is the same as the time of startup of the equipment, if so, indicating that the real-time clock is in a non-running state;
or, judging whether the voltage of a backup battery for supplying power to the real-time clock is zero when the device is shut down, and if the voltage of the backup battery is zero, indicating that the real-time clock is in a non-running state.
7. The time calibration method according to claim 1, wherein said calibrating the time at which said data is generated based on said synchronization time and a current time of said device comprises:
calculating the difference value between the current time of the equipment and the generation time of the data to obtain an intermediate value;
and calculating the difference value between the synchronous time and the intermediate value to obtain the generation time of the calibrated data.
8. The method according to claim 1, wherein after the saving the synchronization time and the current time of the device when the synchronization time is obtained, the method further comprises:
changing a current time of the device to the synchronization time.
9. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor; the at least one processor executing the instructions to perform the time calibration method of any of claims 1 to 8.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the time calibration method according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360086A (en) * | 2021-12-09 | 2022-04-15 | 北京汽车研究总院有限公司 | Data processing method, data processing device, in-vehicle device, and storage medium |
| CN114360086B (en) * | 2021-12-09 | 2024-04-26 | 北京汽车研究总院有限公司 | Data processing method, data processing device, vehicle device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826742A (en) * | 2003-09-11 | 2006-08-30 | 思科技术公司 | System for synchronizing circuitry in an access network |
| US20150260030A1 (en) * | 2014-03-13 | 2015-09-17 | Halliburton Energy Services, Inc. | Method and system for tracking time in a downhole tool without the need for a battery |
| CN105426266A (en) * | 2014-08-15 | 2016-03-23 | 研祥智能科技股份有限公司 | Real-time clock calibration method and system |
| CN111596721A (en) * | 2020-04-09 | 2020-08-28 | 深圳市元征科技股份有限公司 | Data time tag synchronization method and device |
-
2020
- 2020-10-29 CN CN202011181455.XA patent/CN112099567A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826742A (en) * | 2003-09-11 | 2006-08-30 | 思科技术公司 | System for synchronizing circuitry in an access network |
| US20150260030A1 (en) * | 2014-03-13 | 2015-09-17 | Halliburton Energy Services, Inc. | Method and system for tracking time in a downhole tool without the need for a battery |
| CN105426266A (en) * | 2014-08-15 | 2016-03-23 | 研祥智能科技股份有限公司 | Real-time clock calibration method and system |
| CN111596721A (en) * | 2020-04-09 | 2020-08-28 | 深圳市元征科技股份有限公司 | Data time tag synchronization method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360086A (en) * | 2021-12-09 | 2022-04-15 | 北京汽车研究总院有限公司 | Data processing method, data processing device, in-vehicle device, and storage medium |
| CN114360086B (en) * | 2021-12-09 | 2024-04-26 | 北京汽车研究总院有限公司 | Data processing method, data processing device, vehicle device and storage medium |
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Application publication date: 20201218 |