WO2022155948A1

WO2022155948A1 - Video storage method for vehicle-mounted device, and vehicle-mounted device

Info

Publication number: WO2022155948A1
Application number: PCT/CN2021/073555
Authority: WO
Inventors: 范章华
Original assignee: 深圳市锐明技术股份有限公司
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-07-28
Also published as: CN113228624A

Abstract

The present disclosure discloses a video storage method for a vehicle-mounted device, and a vehicle-mounted device. Said method comprises: monitoring the state of a vehicle; and if an anomalous state of the vehicle is detected, writing buffered video data within a preset time period into an anomalous video storage area of a non-volatile memory. In the solution, when an anomalous event occurs, for example, when a traffic accident happens, a violent impact also does not affect the storage function of the non-volatile memory, and the video of the collision event can be stored, facilitating interpretation of the cause to the accident.

Description

Video storage method for vehicle-mounted equipment and vehicle-mounted equipment

technical field

The application belongs to the technical field of video storage, and in particular, relates to a video storage method of a vehicle-mounted device and the vehicle-mounted device.

Background technique

During the actual driving of the vehicle, the on-board equipment can be used to record the situation during the driving of the vehicle. Due to the influence of the road surface, continuous vibration or occasional impact will inevitably occur. In order to adapt to this scenario, vehicle-mounted equipment generally needs to design a shock absorption device that can be installed with a mechanical hard disk to attenuate external vibration energy and reduce vibration and impact. The influence of the mechanical hard disk work, so as to realize the recording and writing function under normal scenes. In on-board equipment, mechanical hard disks have been widely used as video storage media.

However, when an abnormal event occurs, such as a car accident, the violent impact will be transmitted to the mechanical hard disk through the body and equipment, causing the mechanical hard disk to work abnormally and the crash event video recording failure.

technical problem

One of the purposes of the embodiments of the present application is that: the embodiments of the present application provide a video recording storage method of a vehicle-mounted device and the vehicle-mounted device, which can solve the problem that a severe impact will pass through the vehicle body, The device then acts on the mechanical hard disk, causing the mechanical hard disk to work abnormally and the crash event recording failure to write.

technical solutions

In order to solve the above-mentioned technical problems, the technical solutions adopted in the embodiments of the present application are:

In a first aspect, a video recording storage method of a vehicle-mounted device is provided, including:

Monitor the state of the vehicle;

If the abnormal state of the vehicle is detected, the cached video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory.

In one embodiment, if the abnormal state of the vehicle is detected, the buffered video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory, including:

If it is detected that the vehicle is impacted, and the impact intensity is greater than the preset impact threshold, the cached video data of the preset time period is written into the abnormal recording storage area of the non-volatile memory.

In one embodiment, after the monitoring of the state of the vehicle, the method further includes:

If the abnormal state of the vehicle is not detected, the cached video data of the preset time period is written into the conventional video storage area of the mechanical hard disk.

If it is detected that the in-vehicle device is shut down abnormally, the cached video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory.

In one embodiment, it also includes:

After the in-vehicle device is started, the cached video in the abnormal video recording storage area is dumped to the conventional video recording storage area of the mechanical hard disk.

In one embodiment, the step of transferring the cached video in the abnormal video recording storage area to the conventional video recording storage area of the mechanical hard disk further includes:

Transfer the cached video whose storage time is less than the preset duration in the abnormal recording storage area to the conventional recording storage area of the mechanical hard disk, and delete the cached video whose storage time is greater than or equal to the preset duration in the abnormal recording storage area.

In a second aspect, an in-vehicle device is provided, including:

The monitoring unit is used to monitor the state of the vehicle;

The first processing unit is configured to write the cached video data of a preset time period into the abnormal video recording storage area of the non-volatile memory if an abnormal state of the vehicle is detected.

In one embodiment, the first processing unit is specifically configured to:

In one embodiment, the in-vehicle device further includes:

The second processing unit is configured to write the cached video data of the preset time period into the conventional video storage area of the mechanical hard disk if the abnormal state of the vehicle is not monitored.

In one embodiment, the first processing unit is specifically configured to:

In one embodiment, the in-vehicle device further includes:

The third processing unit is configured to dump the cached video in the abnormal video recording storage area to the conventional video recording storage area of the mechanical hard disk after the vehicle-mounted device is started.

In one embodiment, the third processing unit is further configured to:

In a third aspect, an in-vehicle device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program, the above-mentioned first The video recording storage method of the in-vehicle device described in the aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements the vehicle-mounted device described in the first aspect above recording storage method.

beneficial effect

The beneficial effect of the video storage method of the in-vehicle device provided by the embodiment of the present application is that: in the embodiment of the present application, the in-vehicle device monitors the state of the vehicle; if an abnormal state of the vehicle is detected, the cached video data of a preset time period is written to The abnormal recording storage area into the non-volatile memory. In the above solution, when an abnormal event occurs, such as a car accident, the violent impact will not affect the storage function of the non-volatile memory, and the collision event video can be stored to facilitate the interpretation of the cause of the accident.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or exemplary technologies. Obviously, the drawings in the following description are only for the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic flowchart of a video recording storage method of a vehicle-mounted device provided by a first embodiment of the present application;

2 is a schematic flowchart of a video recording storage method of a vehicle-mounted device provided by the first embodiment of the present application;

3 is a schematic flowchart of a video recording storage method of a vehicle-mounted device provided by the first embodiment of the present application;

FIG. 4 is a schematic diagram of the principle of the vehicle-mounted device of the execution subject of a video recording storage method of the vehicle-mounted device provided by the first embodiment of the present application;

5 is a schematic diagram of a vehicle-mounted device provided by a second embodiment of the present application;

FIG. 6 is a schematic diagram of a vehicle-mounted device provided by a third embodiment of the present application.

Embodiments of the present invention

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description, rather than indicating or implying the referred device Or the elements must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be construed as a limitation to the present application, and those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations. The terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance or implying indicating the number of technical features. "Plurality" means two or more, unless expressly specifically limited otherwise.

As a video recording device, the on-board device itself plays a very important role in saving the video of the accident, so as to provide important evidence for the analysis of the cause of the accident and the division of responsibilities.

At present, there are three main types of video storage media for in-vehicle equipment: mechanical hard disk, solid-state hard disk and SD card. Among the three, the mechanical hard disk is the most cost-effective, so in the vehicle equipment, the mechanical hard disk has been widely used as a video storage medium.

Mechanical hard disks are generally composed of discs, read/write heads, spindles, transmission cantilevers, voice coil motors, PCB control circuits, and casings. When the disk is reading and writing, the disk rotates at high speed, and the magnetic head flies above the disk, and the distance from the disk is less than 1 micron. Its working principle determines that if there is a strong vibration or shock factor in the external environment, the data reading or writing of the hard disk will be seriously affected. If the energy of vibration and shock exceeds the range that the mechanical hard disk can withstand, data writing will fail, and even severe shock will directly cause the hard disk to be damaged and all historical data to be lost.

During the actual driving of the vehicle, due to the influence of the road surface, continuous vibration or occasional impact will inevitably occur. In order to adapt to this scenario, the vehicle-mounted equipment generally needs to design a shock absorption device that can be installed with a mechanical hard disk to attenuate external vibration. energy, reduce the impact of vibration and shock on the working of the mechanical hard disk, so as to realize the recording and writing function under normal scenes.

The shock absorption performance of the shock absorption device can meet the requirements in most scenarios, but when there is an abnormal event such as a car crash, such as a car accident, the severe impact will be transmitted to the mechanical hard disk through the body and equipment, causing the mechanical hard disk to work abnormally. Recording writing failed.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a video recording storage method of a vehicle-mounted device provided by the first embodiment of the present application. In this embodiment, the execution subject of a video recording storage method of an in-vehicle device is an in-vehicle device. The video recording storage method of the in-vehicle device as shown in FIG. 1 may include:

S101: Monitor the state of the vehicle.

The in-vehicle device monitors the state of the vehicle, and the in-vehicle device can monitor the state of the vehicle in various ways.

In one embodiment, the vehicle-mounted device may analyze the state of the vehicle through images of the vehicle in different directions collected by the image acquisition device, collect images in real time, and monitor the state of the vehicle in real time. The in-vehicle device can recognize the image through the target recognition algorithm or the neural network model algorithm, so as to determine the state of the vehicle.

In one embodiment, the in-vehicle device can collect data of vehicle vibration and shock in real time through sensors. For example, the in-vehicle device can perform shock detection through the acceleration sensor G-sensor. The vehicle has a built-in 6-axis inertial sensor, which is responsible for real-time detection of vehicle vibration and shock. Data, and can judge the current state of the vehicle through a preset threshold. When the data of vehicle vibration and shock is greater than a preset threshold, it can be determined that the state of the vehicle is an abnormal state.

At the same time, the G-sensor can also detect changes in vehicle orientation. Under normal circumstances, after the device is installed in the vehicle, the initial X-Y-Z three-axis direction of the G-senor sensor can be determined. When the vehicle rolls over, the default axis will change. Through relevant detection, the vehicle can be identified. A rollover occurred and the state of the vehicle was abnormal.

S102: If an abnormal state of the vehicle is detected, write the cached video data of the preset time period into the abnormal video recording storage area of the non-volatile memory.

In this embodiment, the state of the vehicle may include various states, for example, including an abnormal state of the vehicle and a normal state of the vehicle. The abnormal state of the vehicle may include a variety of situations, such as the vehicle is impacted, or the vehicle rolls over, and the in-vehicle equipment is abnormally shut down, all of which may belong to the abnormal state of the vehicle.

If the vehicle-mounted device detects an abnormal state of the vehicle, the cached video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory.

The cached video data in the preset time period may be the cached video data in the latest preset time period. For example, the cached video data in the preset time period may be the latest cached video data in 3S, and a period of time may be set in the device. Cache space, dedicated to temporarily storing 3s video data. Refresh related video data on a first-in, first-out basis. If the abnormal state of the vehicle is detected, the cached video data of the preset time period in the cache space is written into the abnormal video recording storage area of the non-volatile memory.

Wherein, the abnormal recording storage area of the non-volatile memory can be EMMC flash. In summary of this embodiment, the CPU of the in-vehicle device supports EMMC flash startup, and the startup program can be stored in the EMMC flash. At present, the most cost-effective EMMC flash has a minimum capacity of 8GBytes. In fact, the startup program of the CPU does not exceed 1GBytes, so there is a lot of program space. remaining.

In addition, if the abnormal state of the vehicle is detected, the auxiliary power supply of the system can be turned on, and the auxiliary power supply of the system can be used for the Farad capacitor backup system to provide auxiliary power for the system. There may be situations in which the shock and impact directly lead to the disconnection of the external power of the device. At this time, the backup part of the Farad capacitor can provide auxiliary power for the system. Considering the cost factor, the auxiliary power supply time is generally set to 5s.

Several implementation manners can be described with reference to FIG. 2 . After the in-vehicle device is started, the video encoding buffer obtains 3s of video data.

Specifically, in one embodiment, if it is detected that the vehicle is impacted by the G-sensor impact detection, and the impact intensity is greater than the preset impact threshold, the cached video data of the preset time period is written into the non-volatile memory. Abnormal recording storage area, namely EMMC flash. In this embodiment, the abnormal state of the vehicle is abnormal impact of the vehicle. If it is detected that the vehicle is impacted and the impact intensity is greater than the preset impact threshold, it means that the state of the vehicle is the abnormal state of the vehicle.

Specifically, in one embodiment, if it is detected that the in-vehicle device is abnormally shut down, the cached video data of a preset time period is written into the abnormal video recording storage area of the non-volatile memory, that is, the EMMC flash.

In normal scenarios, the power supply of in-vehicle equipment is directly drawn from the vehicle battery, and the startup or shutdown is controlled by the car key signal. When the car key signal is turned on, the in-vehicle device is activated, and when the car key is turned off, the in-vehicle device is turned off. When a vehicle collides, it often happens that the power supply of the on-board equipment and the car key fail at the same time. Therefore, when the on-board equipment is shut down abnormally, the possibility of the vehicle colliding is relatively high. Therefore, if an abnormal shutdown of the in-vehicle device is detected, the device can write the cached video data of the preset time period into the abnormal video recording storage area of the non-volatile memory.

In one embodiment, if the abnormal state of the vehicle is not detected, the cached video data of the preset time period is written into the conventional video storage area of the mechanical hard disk.

In order to ensure that the space in the abnormal recording storage area can store the video data when the vehicle is in an abnormal state, after the on-board equipment is started, the device can transfer the cached video in the abnormal recording storage area to the conventional recording storage area of the mechanical hard disk. After the in-vehicle device is started, the acquired cached video in the abnormal recording storage area is historical data, and the historical data can be transferred to the conventional recording storage area of the mechanical hard disk to free up space in the abnormal recording storage area.

In one embodiment, when the cached video in the abnormal video recording storage area is dumped to the conventional video recording storage area of the mechanical hard disk, specifically, the device dumps the cached video whose storage time is less than the preset duration in the abnormal video recording storage area. To the conventional video storage area of the mechanical hard disk, delete the cached video that will be greater than or equal to the preset duration when stored in the abnormal video storage area. For example, when the event time exceeds a week, the in-vehicle device can delete the cached video to free up the corresponding space.

In one embodiment, more settings can also be set to recycle the space in the abnormal recording storage area. For example, the maximum bit rate of a 1080P 30FPS camera is 8Mbit/s. The required storage space is 8Mbit/s*4*3/8=12MBbytes. If 100 blocks are drawn in the EMMC flash, and each block can store the cached video data of a preset time period of an abnormal collision event, the storage space of the cached video data of the preset time period of the abnormal event is 1200Mbytes, It is far from taking up the remaining space of EMMC flash.

Through this strategy, we can greatly improve the system cost performance without adding additional memory.

These 100 blocks can be recycled by setting relevant policies. For example, as shown in Figure 4, the vehicle-mounted device is activated and can search for abnormal recording blocks. In this embodiment, the preset threshold is set to 50. When the number of remaining blocks is less than the preset threshold and the system is idle, the device can record the abnormal recording. The cached video in the storage area is transferred to the conventional recording storage area of the mechanical hard disk; when the number of remaining blocks is greater than or less than the preset threshold and the storage time of the stored video data is less than the preset time period, the device can cache the abnormal recording storage area. The video is transferred to the conventional recording storage area of the mechanical hard disk; when the number of remaining blocks is greater than or less than the preset threshold and the storage time of the stored video data is greater than or equal to the preset time period, the device can delete the cached video in the abnormal recording storage area ; When the number of remaining blocks is less than the preset threshold and the block storage time exceeds one week, the vehicle-mounted device can delete the cached video and release the corresponding space; when the number of remaining blocks is less than the preset threshold and the block storage time does not exceed one week, The in-vehicle device can dump the cached video in the abnormal recording storage area to the conventional recording storage area of the mechanical hard disk.

In addition, as shown in FIG. 4 , this embodiment provides a principle block diagram of a vehicle-mounted device. The on-board equipment is composed of camera input, G-sensor shock detection, Farad capacitor backup power, switch detection, CPU, DDR cache, EMMC flash, shock absorption device with mechanical hard disk and other main parts.

The camera part is responsible for the collection of video data. Depending on the installation location, the camera can capture video images from different directions of the vehicle, such as the front, side, rear, interior and other areas of the vehicle. These key area videos can be used to restore the vehicle running scene.

The G-sensor shock detection part has a built-in 6-axis inertial sensor, which is responsible for real-time detection of vehicle vibration and shock data, and can use a preset threshold to determine whether an abnormal shock occurs. When an abnormal shock occurs, the G-sensor output is interrupted and triggered. The CPU starts the abnormal shock recording save action. At the same time, the G-sensor can also detect changes in vehicle orientation. Under normal circumstances, after the device is installed in the vehicle, the initial X-Y-Z three-axis direction of the G-senor sensor can be determined. When the vehicle rolls over, the default axis will change. Through relevant detection, the vehicle can be identified. A rollover event triggers an alarm on the remote platform.

The Farad capacitor backup part is responsible for providing the auxiliary power supply of the system. When the vehicle has an abnormal collision, the external power supply of the on-board equipment is very easily affected, and there may even be a situation where the impact and collision directly lead to the disconnection of the external power of the equipment. At this time, the backup part of the Farad capacitor can provide auxiliary power for the system. Considering the cost factor, the auxiliary power supply time is generally set to 5s.

The switch detection part is used for the normal switch control of on-board equipment. In normal scenarios, the power supply of in-vehicle equipment is directly drawn from the vehicle battery, and the startup or shutdown is controlled by the car key signal. When the car key signal is turned on, the device is turned on, and when the car key is turned off, the device is turned off. When the vehicle collides, the power supply of the device and the key of the car often fail at the same time. The CPU can identify whether to trigger the abnormal video saving through the relevant detection circuit.

The CPU part is the main control part of the system. It is responsible for camera video data reception, video data encoding, G-sensor interrupt processing, abnormal shutdown recognition, normal recording, abnormal recording storage and protection.

DDR cache realizes system program operation and temporary storage of video encoding data, which is a power-off volatile memory. In terms of program design, a buffer space can be opened up to temporarily store 3s video data. Refresh related video data on a first-in, first-out basis. Under normal circumstances, the data in the cache is directly written to the mechanical hard disk. When an abnormal collision occurs, the G-sensor generates an interrupt signal, which triggers the CPU to start the abnormal save program, and stores the 3s video data in the cache into the Emmc flash with the highest priority.

Emmc flash part, system program memory and abnormal recording temporary memory, belong to the non-volatile memory when power off. The CPU generally supports EMCC flash boot. The boot program can be stored in EMCC flash. At present, the most cost-effective EMCC flash in the market has a minimum capacity of 8GBytes. In fact, the boot program of the CPU does not exceed 1GBytes, so there is a lot of program space left.

In the embodiment of the present application, the vehicle-mounted device monitors the state of the vehicle; if an abnormal state of the vehicle is detected, the cached video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory. In the above solution, when an abnormal event occurs, such as a car accident, the violent impact will not affect the storage function of the non-volatile memory, and the collision event video can be stored to facilitate the interpretation of the cause of the accident.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Please refer to FIG. 5 , which is a schematic diagram of a vehicle-mounted device provided by a second embodiment of the present application. The included units are used to execute the steps in the embodiment corresponding to FIG. 1 . For details, please refer to the relevant description in the embodiment corresponding to FIG. 1 . For convenience of explanation, only the parts related to this embodiment are shown. Referring to Fig. 4, the in-vehicle device 5 includes:

a monitoring unit 510, configured to monitor the state of the vehicle;

The first processing unit 520 is configured to write the cached video data of a preset time period into the abnormal video recording storage area of the non-volatile memory if an abnormal state of the vehicle is detected.

Further, the first processing unit 520 is specifically used for:

Further, the vehicle-mounted device 5 also includes:

Further, the first processing unit 520 is specifically used for:

Further, the vehicle-mounted device 5 also includes:

Further, the third processing unit is also used for:

FIG. 6 is a schematic diagram of a vehicle-mounted device provided by a third embodiment of the present application. As shown in FIG. 6 , the in-vehicle device 6 of this embodiment includes: a processor 60 , a memory 61 , and a computer program 62 stored in the memory 61 and executable on the processor 60 , such as video storage of the in-vehicle device program. When the processor 60 executes the computer program 62 , the steps in each of the above embodiments of the video recording storage method of the vehicle-mounted device are implemented, for example, steps 101 to 102 shown in FIG. 1 . Alternatively, when the processor 60 executes the computer program 62, the functions of the modules/units in each of the foregoing apparatus embodiments, for example, the functions of the modules 510 to 520 shown in FIG. 5 are implemented.

Exemplarily, the computer program 62 may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 61 and executed by the processor 60 to complete the this application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the in-vehicle device 6 . For example, the computer program 62 can be divided into a monitoring unit and a first processing unit, and the specific functions of each unit are as follows:

The monitoring unit is used to monitor the state of the vehicle;

The in-vehicle device may include, but is not limited to, a processor 60 and a memory 61 . Those skilled in the art can understand that FIG. 6 is only an example of the in-vehicle device 6 , and does not constitute a limitation on the in-vehicle device 6 , and may include more or less components than shown, or combine some components, or different components For example, the in-vehicle device may further include an input and output device, a network access device, a bus, and the like.

The so-called processor 60 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processors) Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 61 may be an internal storage unit of the in-vehicle device 6 , such as a hard disk or a memory of the in-vehicle device 6 . The memory 61 may also be an external storage device of the in-vehicle device 6, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) equipped on the in-vehicle device 6 card, Flash Card, etc. Further, the in-vehicle device 6 may also include both an internal storage unit of the in-vehicle device 6 and an external storage device. The memory 61 is used to store the computer program and other programs and data required by the in-vehicle device. The memory 61 can also be used to temporarily store data that has been output or will be output.

It should be noted that the information exchange, execution process and other contents between the above-mentioned devices/units are based on the same concept as the method embodiments of the present application. For specific functions and technical effects, please refer to the method embodiments section. It is not repeated here.

Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated in one processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit, and the above-mentioned integrated units may adopt hardware. It can also be realized in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above-mentioned system, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

An embodiment of the present application also provides a network device, the network device includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, the processor executing The computer program implements the steps in any of the foregoing method embodiments.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.

The embodiments of the present application provide a computer program product, when the computer program product runs on a mobile terminal, the steps in the foregoing method embodiments can be implemented when the mobile terminal executes the computer program product.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the present application realizes all or part of the processes in the methods of the above embodiments, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When executed by a processor, the steps of each of the above method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include at least: any entity or device capable of carrying the computer program code to the photographing device/terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunication signals, and software distribution media. For example, U disk, mobile hard disk, disk or CD, etc. In some jurisdictions, under legislation and patent practice, computer readable media may not be electrical carrier signals and telecommunications signals.

In the foregoing embodiments, the description of each embodiment has its own emphasis. For parts that are not described or described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus/network device and method may be implemented in other manners. For example, the apparatus/network device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units. Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: it can still be used for the above-mentioned implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the application, and should be included in the within the scope of protection of this application.

Claims

A video recording storage method for vehicle-mounted equipment, applied to the vehicle-mounted equipment, is characterized in that, comprising:

Monitor the state of the vehicle;

If the abnormal state of the vehicle is detected, the cached video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory.
The video recording storage method of the in-vehicle device according to claim 1, wherein if the abnormal state of the vehicle is monitored, the buffered video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory, include:

If it is detected that the vehicle is impacted, and the impact intensity is greater than the preset impact threshold, the cached video data of the preset time period is written into the abnormal recording storage area of the non-volatile memory.
The video recording storage method of the in-vehicle device according to claim 1, wherein after the monitoring of the state of the vehicle, the method further comprises:

If the abnormal state of the vehicle is not detected, the cached video data of the preset time period is written into the conventional video storage area of the mechanical hard disk.
The video recording storage method of the in-vehicle device as claimed in claim 1, wherein if an abnormal state of the vehicle is detected, the buffered video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory, comprising:

If it is detected that the in-vehicle device is shut down abnormally, the cached video data of the preset time period is written into the abnormal video recording storage area of the non-volatile memory.
The video recording storage method of in-vehicle equipment as claimed in claim 1, is characterized in that, also comprises:

After the in-vehicle device is started, the cached video in the abnormal video recording storage area is dumped to the conventional video recording storage area of the mechanical hard disk.
The video recording storage method of in-vehicle equipment as claimed in claim 5, is characterized in that, described transferring the cached video in the abnormal video recording storage area to the conventional video recording storage area of the mechanical hard disk, also comprises:

Transfer the cached video whose storage time is less than the preset duration in the abnormal recording storage area to the conventional recording storage area of the mechanical hard disk, and delete the cached video whose storage time is greater than or equal to the preset duration in the abnormal recording storage area.
A vehicle-mounted device, comprising:

The monitoring unit is used to monitor the state of the vehicle;

The first processing unit is configured to write the cached video data of the preset time period into the abnormal video recording storage area of the non-volatile memory if an abnormal state of the vehicle is detected.
The in-vehicle device according to claim 7, wherein the first processing unit is specifically used for:

If it is detected that the vehicle is impacted, and the impact strength is greater than the preset impact threshold, the cached video data of the preset time period is written into the abnormal recording storage area of the non-volatile memory.
An in-vehicle device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, when the processor executes the computer program, the computer program according to claim 1 to 6 The method of any one.
A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.