WO2018171266A1 - Video monitoring data storage method and device - Google Patents

Abstract

The present invention relates to a video monitoring data storage method and device, comprising: receiving a path of video monitoring data, storing the video monitoring data in a specified flash block and recording a number of times the path of video monitoring data is stored; when the number of times the path of video monitoring data is stored reaches a first threshold, allocating a corresponding flash block for the path of video monitoring data, and subsequently directly storing the path of video monitoring data in the allocated flash block if the path of video monitoring data is received again. Since the corresponding flash block only has one path of video monitoring data stored therein, the flash block can be totally overwritten if all of the path of video monitoring data stored in the corresponding flash block becomes invalid, and thus other paths of video monitoring data files will not be affected, thereby avoiding the step of moving the other paths of valid files to memory and back, and increasing the efficiency of recovering the storage space and reducing the loss of flash blocks.

Description

 Video monitoring data storage method and device

 Technical field

 [0001] The present application relates to the field of video surveillance technologies, and in particular, to a video surveillance data storage method and apparatus.

 [0002] Our daily life is basically inseparable from video surveillance systems. The video surveillance system can be divided into one or more channels according to the number of monitoring channels, that is, one or more scenarios are monitored. Multi-channel monitoring corresponds to multiple video files, and video files monitored by different channels are stored in the memory through the same interface.

 [0003] In a video surveillance system, a flash memory is often used as a memory. Flash memory consists of multiple flash blocks, each containing multiple pages. In the conventional method, each video file is sequentially written into the same flash block in the order in which the data is written, that is, more than one video file stored in the same flash block. Due to the limited storage space of the flash memory, the storage space allocated to each video file is limited, and the video data stream of each channel is different. The monitoring video of a certain code stream consumes a relatively fast storage space, which will result in the video file of the channel. The storable space is used up before the storable space of other video files. In this case, the invalid data of the video in the flash block needs to be deleted to obtain free space for the latest file storage of the video.

 [0004] However, flash erase is performed in units of blocks, and deleting expired video files monitored by a certain channel requires erasing all blocks in which expired video files are located. However, more than one video file is stored in the flash block. When the page occupied by the video file stored in the flash block becomes a dirty page (the page whose stored data has expired), the other monitored video in the flash block The page occupied by the file may still be a valid page (the page where the stored data has not expired). This requires moving the valid page data outside the dirty pages of these blocks to the memory of the monitoring device before erasing the block where the expired video files are located, and then performing an overall erase operation on these flash blocks, and finally The valid page data moved to the memory is moved back to the corresponding page position of the block in which it was previously located. The traditional method storage space is extremely inefficient, and it is necessary to copy a valid page before erasing the flash block, and the flash erasing frequency is limited, so the loss is large for the flash block.

[0005] The conventional method is exemplified by a total of four channels of monitoring in the video monitoring system, which are A, B, C, and D. The 4-way monitoring corresponds to 4 video files. 4 channels of video every interval The pieces will be stored in flash memory in turn. Please refer to Table 1. In the first interval, 4 video files can be named A1, Bl, Cl, Dl. In the second interval, 4 video files can be named A2, B2, C2, D2. , So on and so forth. Since the branching multiplexing method is adopted, the storage of each segment is sequentially stored in the page of the flash block in the order from A to D. The total storage space of the flash memory is limited, and the storage space allocated to the 4-way video file is also limited. Assuming that the A channel has the largest stream size, the A channel consumes more storage space than the other three video files. When the storage space allocated to the A channel is exhausted, the expired A channel video needs to be deleted to obtain the space of the A channel video storing the latest inter-segment, and it is necessary to delete the invalid data A5, A6, A7, A8, which needs to be Before erasing the blocks where A5, A6, A7, and A8 are located, first move the pages occupied by the B, C, and D channels in the block to the memory, and then erase the flash memory where A5, A6, A7, and A8 are located. Block, finally move the B-channel, C-channel, and D-way valid page data in the memory back to the corresponding page position of the previous flash block. This way, the storage space is extremely inefficient, and the loss of the flash block is also large.

SUMMARY OF THE INVENTION

 Based on this, it is necessary to provide a video surveillance data storage method and apparatus capable of improving storage space recovery efficiency and reducing flash block loss in response to the above technical problems.

[0008] A video surveillance data storage method, the method includes:

 [0009] receiving one channel of video surveillance data, storing the video surveillance data into a designated flash block, and recording the number of times the video surveillance data is stored;

[0010] when the number of times the video surveillance data is stored reaches a first threshold 吋, assigning a corresponding flash block to the video surveillance data;

 [0011] After receiving the video surveillance data again, the video surveillance data is directly stored in the allocated flash block.

 [0012] A video surveillance data storage device, the device includes:

 [0013] a recording module, configured to receive one channel of video surveillance data, store the video surveillance data into a specified flash block, and record the number of times the video surveillance data is stored;

[0014] a flash block allocation module, configured to allocate a corresponding flash block for the video surveillance data of the channel when the number of times the video surveillance data is stored reaches a first threshold

[0015] a storage module, configured to store the video surveillance data in the allocated flash block directly after receiving the corresponding flash block for the video surveillance data. [0016] The video monitoring data storage method and device, receive one video surveillance data, store the video surveillance data into a designated flash block, and record the number of times the video surveillance data is stored. When the number of times the video surveillance data is stored reaches the first threshold, the corresponding video block is allocated to the video surveillance data, and then the video surveillance data is received again, and the video surveillance data is directly stored to the allocated In the flash block. A flash block corresponding to a certain video surveillance data stored in a specified flash block exceeding a first threshold is used to store the aforementioned video surveillance data.

 [0017] An electronic device, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory is stored for execution by the at least one processor An instruction, the instructions being executed by the at least one processor to enable the at least one processor to perform the method described above.

 [0018] A non-transitory computer readable storage medium storing computer executable instructions for causing the electronic device to perform the above method when the computer executable instructions are executed by an electronic device .

 [0019] A computer program product, comprising: a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, wherein the program instructions are electronically The device executes 吋 to cause the electronic device to perform the above method.

 [0020] Because the corresponding flash block only stores one video monitoring data, if all the video monitoring data stored in the corresponding flash block becomes invalid data, the flash block can be erased as a whole. Video surveillance data files that affect other roads. Each erase can reclaim a complete flash block, thus improving the storage efficiency of the storage space, and only one data is stored in one flash block, so when the data in the flash block is invalid data, the whole Erasing can be done, avoiding moving the valid files of other paths to the memory and then moving them back, reducing the loss of the flash blocks.

Brief description of the drawing

 DRAWINGS

[0021] One or more embodiments are exemplified by the accompanying drawings in the accompanying drawings. The components in the drawings do not constitute a scale limitation unless otherwise stated. [0022] FIG. 1 is an application environment diagram of a method for monitoring video data storage in an embodiment;

2 is a flow chart of a method for monitoring video data storage in an embodiment;

[0024] FIG. 3 is a flow chart of a method for monitoring video data storage in an embodiment;

4 is a flow chart of a method for monitoring video data storage in an embodiment; [0025] FIG.

5 is a flow chart of a method for monitoring video data storage in an embodiment;

6 is a flow chart of a method for monitoring video data storage in an embodiment;

7 is a schematic diagram of a video surveillance data storage method received in the first three times in the embodiment; [0028] FIG.

8 is a schematic diagram of a method for storing video surveillance data received after more than 3 times in an embodiment; [0030] FIG. 9 is a schematic structural diagram of a monitoring video data storage device in an embodiment;

[0031] FIG. 10 is a schematic structural diagram of a monitoring video data storage device in an embodiment;

[0032] FIG. 11 is a schematic structural diagram of a monitoring video data storage device in an embodiment;

[0033] FIG. 12 is a schematic structural diagram of a monitoring video data storage device in an embodiment;

13 is a schematic structural diagram of a monitoring video data storage device in an embodiment; [0034] FIG.

[0035] FIG. 14 is a hardware structure of an electronic device for performing a video surveillance data storage method according to an embodiment of the present application.

DETAILED DESCRIPTION

The above described objects, features and advantages of the present application will become more apparent from the detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and thus the present application is not limited by the specific implementations disclosed below.

 [0038] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments, and is not intended to be limiting. The technical features of the above embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, It is considered to be the range described in this specification.

The video surveillance data storage method provided by the embodiment of the present application can be applied to the environment shown in FIG. 1. Reference As shown in FIG. 1 , the imaging device 102 is connected to the storage device 104 , and the imaging device 102 includes a central processing unit (CPU). The imaging device 102 can directly send video monitoring data to the storage device 104. The storage device 104 Receive and store video surveillance data.

 [0040] In an embodiment, as shown in FIG. 2, a video surveillance data storage method is provided, including:

[0041] Step 210: Receive one channel of video surveillance data, store the video surveillance data into a specified flash block, and record the number of times the video surveillance data is stored.

 [0042] A video surveillance system is composed of five parts: camera, transmission, control, display, and record registration. In this embodiment, the video monitoring system can be divided into one or multiple channels according to the number of monitoring channels, that is, one or more scenes are monitored. In video surveillance systems, flash is often used as a storage device.

 [0043] The imaging device transmits the video monitoring data to the storage device and finally stores it in the storage device. FTL (Fla sh Translation Layer) is a translation layer between the flash chip and the file system. It enables the operating system and file system to access the flash device as if it were a hard disk. The function of FTL is to effectively write data and data to flash memory, and can effectively manage all written data. When it is necessary to read data in the storage device, FTL must accurately calculate the flash memory of the data to be read. The address is used to obtain accurate data.

 [0044] The FTL receives the multi-channel video surveillance data transmitted by the imaging device, and transmits not only the data but also the write address and the data length of the transmission data (not necessary).

[0045] The flash memory is divided into a normal flash block and a dedicated flash block in advance, and the designated flash block is a normal flash block. The normal flash block can receive each video surveillance data, while the dedicated flash block is used to assign the corresponding video monitoring data.

 [0046] The FTL receives one channel of video surveillance data, stores the received video surveillance data into a designated flash block, that is, a normal flash block, and records the number of times the video surveillance data is stored in the normal flash block.

 [0047] Step 220: When the number of times the video surveillance data is stored reaches the first threshold, the corresponding flash block is allocated for the video monitoring data.

[0048] When the number of times the video surveillance data is stored in the normal flash block reaches the first threshold, the FTL allocates a dedicated flash block for the video surveillance data. The first threshold can be set according to the actual situation. A dedicated flash block can be allocated at a time, or a dedicated flash block group can be allocated at a time. This dedicated flash block group contains multiple dedicated flash blocks. [0049] Step 230: After allocating the corresponding flash block for the video surveillance data, receiving the video surveillance data again, directly storing the video surveillance data into the allocated flash block.

 [0050] After the dedicated flash memory block is allocated to the video surveillance data, the FTL receives the video surveillance data again and directly stores the video surveillance data into the dedicated flash memory block.

 [0051] In this embodiment, the FTL allocates a dedicated flash block to a certain video surveillance data whose number of times of storage exceeds the first threshold in the normal flash block, and the dedicated flash block is only used to store the aforementioned video surveillance data. Because the dedicated flash block only stores one video surveillance data, if all the video surveillance data stored in the dedicated flash block becomes invalid data, the flash block can be erased as a whole without affecting other roads. Video surveillance data file. This method of managing flash blocks by FTL can erase a flash block in its entirety to recover a complete flash block for each erase, thus improving storage space recovery efficiency and eliminating the need for flash blocks. The valid files of the other roads are moved to the memory and then moved back, avoiding repeated erasing, which greatly reduces the loss of the flash block.

 [0052] In an embodiment, as shown in FIG. 3, a video surveillance data storage method further includes:

 [0053] Step 240: After the storage space of the allocated flash block is full, the allocated flash blocks that are full and all of the invalid data are erased in one block for the next reallocation.

 [0054] When the storage space of the allocated dedicated flash block is full, the dedicated flash block that is full and all of the invalid data is erased in a block. For example, if the video surveillance data retention period is one month, then the video surveillance data stored for more than one month will become invalid data, and the video surveillance data will be stored for a period of more than one month. The overall erase, making it a free block for the latest video file storage.

 [0055] Step 250: Receive the video surveillance data of the channel, store the video surveillance data in the specified flash block, and record the number of times the video surveillance data is stored.

[0056] receiving the video surveillance data of the channel, the FTL stores the video surveillance data in the normal flash memory block again, and records the number of times the video surveillance data is stored in the normal flash memory block from the FTL.

[0057] Step 260: When the number of times the video surveillance data is stored reaches the first threshold, the corresponding flash block is re-allocated for the video surveillance data.

[0058] When the number of times the video surveillance data is stored in the normal flash block reaches the first threshold 吋, the FTL re-allocates the empty dedicated flash block for the video surveillance data. [0059] Step 270, after receiving the video surveillance data again, directly storing the video surveillance data into the reallocated flash block.

 [0060] After reallocating the empty dedicated flash block for the video surveillance data, when the same video surveillance data is received again, the video surveillance data is directly stored into the reallocated dedicated flash block.

 [0061] In this embodiment, after the dedicated flash memory block or the dedicated flash block group allocated by the FTL for the first time of the video surveillance data is used up, the dedicated flash block that is full and all of the invalid data is erased in a block. , making it a free block for the latest video files to store. Receiving the video surveillance data again, the video surveillance data is stored in the normal flash block, and the number of times the video surveillance data is stored in the ordinary flash block is recorded. When the number of times stored in the normal flash block exceeds the first threshold 吋, the new dedicated flash block is re-allocated for the video surveillance data, and the received video surveillance data is stored in the re-allocated dedicated flash block. .

 [0062] Since a dedicated flash block is allocated to one channel of video surveillance data, when the allocated dedicated flash block is full, the dedicated flash block that is full and all of the invalid data can be erased in a block, thereby becoming empty. Dedicated flash blocks are available for new video surveillance data storage. Therefore, the storage efficiency of the storage space is improved, and the loss of the flash block is small. In the conventional method, more than one video file is stored in the flash block, and when the page occupied by the video file stored in the flash block is occupied by a dirty page (the page whose stored data has expired), other channels in the flash block are monitored. The page occupied by the video file may still be a valid page (the page where the stored data has not expired). This requires moving the valid page data outside the dirty pages of these blocks to the memory of the monitoring device before erasing the block where the expired video files are located, and then performing an overall erase operation on these flash blocks, and finally The valid page data moved to the memory is moved back to the corresponding page position of the block in which it was previously located. The traditional method storage space is extremely inefficient, and it is necessary to copy the effective page before erasing the flash block, which is a large loss for the flash block.

 [0063] In an embodiment, as shown in FIG. 4, a video monitoring data storage method is provided, including:

 [0064] Step 410: Receive multiple video surveillance data.

 [0065] When it is required to perform peer monitoring on multiple scenarios, it can be implemented by using a multi-channel video monitoring system. The multi-channel video surveillance system includes multiple camera devices. The camera device transmits the video surveillance data to the storage device and finally stores it in the storage device.

[0066] FTL (Flash Translation Layer) is between the flash chip and the file system A translation layer that enables the operating system and file system to access flash devices as if they were hard disks. The function of F TL is to effectively write data and data to the flash memory, and can effectively manage all the written data. When it is necessary to read data from the storage device, the FTL must accurately calculate the data to be read. Flash address for accurate data acquisition.

 [0067] The FTL receives the multi-channel video surveillance data transmitted by the imaging device, and transmits not only the data but also the write address and the data length of the transmission data (not necessary).

 [0068] Step 420: Store the video surveillance data into the designated flash block, and record the number of times each video surveillance data is stored.

 [0069] The FTL pre-associates the flash memory into a normal flash block and a dedicated flash block, and the designated flash block is a normal flash block. A normal flash block can receive various video surveillance data, and a dedicated flash block is used to assign to the corresponding video surveillance data. The received multi-channel video surveillance data is first stored in a normal flash block, and the number of times each video surveillance data is stored in a normal flash block is recorded. Each video file will be written to the same normal flash block in the order in which the data is written, that is, more than one video file stored in the same normal flash block.

 [0070] Step 430: When the number of times the video surveillance data is stored reaches the first threshold, the corresponding video block is allocated to the video surveillance data.

 [0071] When the number of times the video surveillance data is stored in the normal flash block reaches the first threshold, the FTL allocates a dedicated flash block for the video surveillance data. The first threshold can be set according to the actual situation. A dedicated flash block can be allocated at a time, or a dedicated flash block group can be allocated at a time. This dedicated flash block group contains multiple dedicated flash blocks.

 [0072] Step 440: After the corresponding flash block is allocated for the video surveillance data, when the received video monitoring data is determined to be the video surveillance data, the video surveillance data is acquired.

[0073] After allocating the dedicated flash block for the video surveillance data, the FTL judges each received video surveillance data to determine whether it is the video surveillance data of the channel, and if the determination result is yes, acquires the received video. Monitor data. The specific determining step is: comparing the address of the video monitoring data received each time with the address of the video monitoring data stored last time, and generating a comparison result. If the comparison result is that the address is continuous, then the receiving is performed. The video surveillance data is the video surveillance data of the channel, so the video surveillance data received this time is obtained, and the video surveillance data received this time is stored in the corresponding dedicated flash memory. Just in the block.

 [0074] Based on the same determination method, when it is determined that the data received again is the video surveillance data, the video surveillance data is directly stored in the dedicated flash block.

[0075] Step 450: Store the video surveillance data directly into a corresponding flash block allocated for the video surveillance data.

 [0076] The video surveillance data acquired this time is directly stored in a dedicated flash memory block corresponding to a certain video surveillance data.

 [0077] In this embodiment, in the multi-channel video surveillance system, the FTL receives the multi-channel video surveillance data, and stores the received multi-channel video surveillance data into the ordinary flash memory block, and records each video surveillance data in the ordinary The number of times stored in the flash block. When the number of times a video surveillance data is stored in a normal flash block reaches a first threshold, FTL allocates a dedicated flash block for the video surveillance data. When it is judged that the received video monitoring data is the video monitoring data of the channel, the video monitoring data is acquired, and the video monitoring data is directly stored into a corresponding flash block allocated for the video monitoring data of the channel. The method for managing a flash block by the FTL method allocates a corresponding dedicated flash block for each video monitoring data stored in a normal flash block for a number of times exceeding a first threshold, thereby storing each data in a separate manner. A different dedicated flash block. When the code stream of a certain surveillance video is large, the dedicated flash block or the dedicated flash block group allocated to the video surveillance data is used up first, then when all the files stored in a dedicated flash block are invalid data, It is possible to directly erase this flash block as a whole to free up empty flash blocks for redistribution. Therefore, the storage space is highly efficient, avoids repeated erasing, and improves the service life of the flash block.

 [0078] In the conventional method, more than one video file is stored in a flash block, and when a page occupied by a video file stored in a flash block is occupied as a dirty page (a page whose stored data has expired), the flash block is in the flash block. The pages occupied by other road-monitored video files may still be valid pages (pages where stored data has not expired). This requires moving the valid page data outside the dirty pages of these blocks to the memory of the monitoring device before erasing the block where the expired video files are located, and then performing an overall erase operation on these flash blocks, and finally The valid page data moved to the memory is moved back to the corresponding page position of the block in which it was previously located. The recovery method of the traditional method storage space is extremely low, and the effective page needs to be copied before the flash block is erased, and the number of erasing and erasing of the flash memory is limited, and the repeated erasing and writing of the flash block is large.

[0079] In an embodiment, as shown in FIG. 5, a video monitoring data storage method further includes: [0080] Step 460: Receive multiple video surveillance data, and record the number of times that the video surveillance data is not continuously received.

 [0081] The FTL has allocated a dedicated flash block to the received multi-channel video monitoring data, and each video monitoring data is stored in the corresponding dedicated flash block, and the receiving condition of each video monitoring data needs to be recorded. Specifically, the number of times that the video monitoring data of a certain channel is not received continuously is counted. For example, if there are 4 channels of video monitoring data of A, B, C, and D, then the received AACDDAADDCCD is the 12 channels that have not been received continuously. Video surveillance data.

 [0082] Step 470: If the number of times the video surveillance data is not received continuously reaches the second threshold, releasing the possession of the video surveillance data to the allocated flash block.

 [0083] The FTL collects statistics on the number of times that the video monitoring data is not received continuously. If the number of times that the video monitoring data is not received continuously reaches the second threshold, the video surveillance data is released to the dedicated dedicated flash block. Occupation, that is, this dedicated flash block is no longer exclusive to this video surveillance data, can be assigned to other channels of video surveillance data storage.

 [0084] In this embodiment, the FTL records the reception status of each video surveillance data to which the dedicated flash memory block has been allocated, and if the number of times that the video surveillance data has not been received continuously reaches the second threshold, the path is released. The video surveillance data has a possession of the assigned dedicated flash block so that this dedicated flash block can be allocated for use by other video surveillance data stores. Rather than just assigning a dedicated flash block to a video surveillance data, the dedicated flash block is occupied by the video surveillance data from start to finish. This will not cause a dedicated flash block to be occupied, but no data is written, and a whole dedicated flash block is wasted, so that the full use of each dedicated flash block is realized, and the storage efficiency is improved.

 [0085] In an embodiment, as shown in FIG. 6, a video monitoring data storage method, further includes:

 [0086] Step 610: When the address of the video monitoring data received this time is not continuous with the address of each video monitoring data received last time, the video monitoring data received this time is stored in a specified flash block. And record the number of times the video surveillance data is stored.

[0087] The file system allocates an address for each video surveillance data, for example, a total of 4 video surveillance data, the file system first assigns the address of the A channel to 0xl0000-lFFFFF, and the address assigned to the B channel is 0x20000- 2FFFFF, the address assigned to the C channel is 0x30000-3FFFFF, and the address assigned to the D channel is Ox 40000-4FFFFF, when the address allocated to the A channel OxlOOOO-lFFFFF is used up and the other paths are not used up. At this point, the file system will reassign the address to channel A, for example, address 0x50000-5FFFFF. Then, when the address of the received video monitoring data of the A channel changes from OxlFFFFF to 0x50000, the video monitoring data received this time is stored in the ordinary flash memory block, and the number of times the video monitoring data is stored is recorded. The video surveillance data of the previous segment is released from the exclusive flash block, so that this dedicated flash block can be used by other channels.

[0088] Step 620: When the number of times the video surveillance data is stored reaches the first threshold, the corresponding flash block is allocated for the video monitoring data.

[0089] When the number of times the video surveillance data is stored in the normal flash block reaches the first threshold 吋, a dedicated flash block is allocated for the video surveillance data. The first threshold can be set according to the actual situation. A dedicated flash block can be allocated at a time, or a dedicated flash block group can be allocated at a time. This dedicated flash block group contains multiple dedicated flash blocks.

 [0090] Step 630, after which the address of each received video monitoring data is compared with the address of the last stored video monitoring data to generate a comparison result.

[0091] Step 640: Acquire video surveillance data whose comparison result is consecutive addresses, and the video surveillance data is the video surveillance data of the channel.

 [0092] Step 650: Store the video surveillance data directly into the allocated flash block.

[0093] after allocating a dedicated flash block for the video surveillance data, comparing the address of each received video surveillance data with the address of the video surveillance data stored last time, and generating a comparison result, if the comparison is performed The result is that the address is continuous, then the video monitoring data received this time is the video monitoring data of the channel, so the video monitoring data received this time is obtained, and the video monitoring data received this time can be stored in the corresponding dedicated flash memory block. .

 [0094] In this embodiment, when the address of the video surveillance data of a certain path is not continuous, the video surveillance data of the previous segment is released from the dedicated flash block, and the received video surveillance is re-received. The data is stored in a normal flash block and the number of stores is counted, and when the first threshold is exceeded, the new dedicated flash block is reassigned. This solves the problem that when the received video surveillance data address is discontinuous, the video surveillance data of the discontinuous address cannot be identified and stored in the corresponding dedicated flash memory block.

[0095] In one embodiment, a method of monitoring video data storage is provided that is exemplified for use in an environment as shown in FIG. [0096] Assuming a total of A, B, C, D 4 video surveillance data, the file system assigns an address to each video surveillance data, the address assigned by the A channel is 0xl0000-lFFFFF, and the address assigned to the B channel is 0x2000. 0-2FFFFF, the address assigned to the C channel is 0x30000-3FFFFF, and the address assigned to the D channel is 0x40000-4 FFFFF. The data length of the A-channel video surveillance data is 200, the data length of the B-channel video surveillance data is 100, the data length of the C-channel video surveillance data is 200, and the data length of the D-channel video surveillance data is 100. Assume that the four channels of video surveillance data are received in sequence, and the four channels of video surveillance data are written for the first time.

[Table 1]

 [0098] The second write is shown in the following table:

[Table 2]

 [0100] The case of the third write is shown in the following table:

[0101] [table 3]

 [0102] The number of writes is defined as the number of times the data is stored for the first time, and the write count is the total number of 4 channels of data received by the storage device.

 [0103] Referring to FIG. 7, each video monitoring data received in the first three times will be sequentially stored in a common flash block. Assuming that the first threshold is 3, then after each video monitoring data is written in the third time, FTL A dedicated flash block is allocated for the video surveillance data.

 [0104] Referring to FIG. 8, the FTL allocates a dedicated flash block 1 to the A channel video monitoring data, a dedicated flash block 2 to the B channel video monitoring data, and a dedicated flash block 3 to the C channel video monitoring data to provide D channel video monitoring. Data is allocated to dedicated flash block 4. After allocating a dedicated flash block for the video surveillance data, the FTL compares the address of each received video surveillance data with the address of each video surveillance data stored last time, and generates a comparison result, and the comparison result is Which video surveillance data last stored address is continuous, then the video surveillance data received this time is the video surveillance data of this channel, so the video surveillance data received this time is obtained, and the video surveillance data received this time is stored here. All the way to the dedicated flash block can be. A 4 indicates that the A channel video surveillance data is received for the fourth time, and so on. Since the number of times the data is stored in the normal flash block has exceeded the first threshold of 3, A4, A5, A6, A7 are stored in the allocated dedicated flash block 1, and B4, B5, B6, B7 are stored in the allocated dedicated flash memory. In block 2, C4, C5, C6, C7 are stored in the allocated dedicated flash block 3, and D4, D5, D6, D7 are stored in the allocated dedicated flash block 4.

 [0105] Since the code stream of the A channel is large, the memory block is consumed quickly, and when the FTL allocates the storage space of the dedicated flash memory block 1 of the A channel, the video surveillance data of the A channel stored in the dedicated flash memory block 1 becomes Invalid data, the dedicated flash block 1 is directly erased to obtain an empty dedicated flash block for redistribution.

[0106] This method of managing a flash block by the FTL method can perform a whole process for one flash block per erase Body erasure to recover a complete flash block, thus improving the storage efficiency of the storage space, and no longer need to move the valid files of other paths in the flash block to the memory and then move back, avoiding repeated erasing and writing, greatly reducing The loss of the flash block.

 [0107] In one embodiment, as shown in FIG. 9, a monitoring video data storage device is further provided, the device comprising: a recording module 910, a flash block allocation module 920, and a storage module 930.

[0108] The recording module 910 is configured to receive one channel of video surveillance data, store the video surveillance data into a specified flash block, and record the number of times the video surveillance data is stored.

[0109] The flash block allocation module 920 is configured to allocate a corresponding flash block for the video surveillance data when the number of times the video surveillance data is stored reaches a first threshold.

[0110] The storage module 930 is configured to store the video surveillance data in the allocated flash block directly after receiving the corresponding flash block for the video surveillance data.

In an embodiment, as shown in FIG. 10, the device further includes: an erasing module 940, a recording module 910, a flash block allocation module 920, and a storage module 930.

[0112] The erasing module 940 is configured to erase the allocated flash blocks that are full and all of the invalid data after the storage space of the allocated flash blocks is full for the next reallocation.

[0113] The recording module 910 receives the video surveillance data of the channel, stores the video surveillance data in the specified flash block, and records the number of times the video surveillance data is stored.

[0114] The flash block allocation module 920 is configured to redistribute the corresponding flash block for the video surveillance data again when the number of times the video surveillance data is stored reaches the first threshold.

[0115] The storage module 930 is configured to: after erasing the allocated flash blocks that are full and all of the invalid data, and then receiving the video surveillance data again, directly storing the video surveillance data to the reallocation. In the flash block.

 [0116] In an embodiment, as shown in FIG. 11, a monitoring video data storage device is further provided, the device comprising: a multi-channel video monitoring data receiving module 1110, a recording module 1120, and a flash block allocation module 1130 determining module. 1140. The storage module 1150.

[0117] The multi-channel video monitoring data receiving module 1110 is configured to receive multi-channel video monitoring data.

[0118] The recording module 1120 is configured to store video monitoring data into a specified flash block, and record the number of times each video monitoring data is stored. [0119] The flash block allocation module 1130 is configured to allocate a corresponding flash block for the video surveillance data when the number of times the video surveillance data is stored reaches the first threshold.

The determining module 1140 is configured to: after the corresponding flash block is allocated for the video monitoring data, obtain the video monitoring data when determining that the received video monitoring data is the video monitoring data.

[0121] The storage module 1150 is configured to directly store the video surveillance data into a corresponding flash block allocated for the video surveillance data.

 [0122] In one embodiment, as shown in FIG. 12, the apparatus further includes: a release module 1160.

 [0123] The recording module 1120 is further configured to receive the multi-channel video monitoring data, and record the number of times that the video monitoring data is not continuously received.

 [0124] The release module 1160 is configured to release the possession of the video surveillance data to the allocated flash block if the number of times the video surveillance data is not received continuously reaches the second threshold.

[0125] In an embodiment, as shown in FIG. 13, the apparatus further includes: an address comparison module 1170 and an acquisition module.

1180.

 [0126] The recording module 1120 is further configured to: when the address of the video monitoring data received this time is not continuous with the address of each video monitoring data received last time, store the video monitoring data received this time to a designated one. In the flash block, and record the number of times the video surveillance data is stored;

[0127] The flash block allocation module 1130 is configured to allocate a corresponding flash block for the video surveillance data when the number of times the video surveillance data is stored reaches a first threshold.

[0128] The address comparison module 1170 is configured to compare the address of each received video surveillance data with the address of the last stored video surveillance data after the corresponding flash block is allocated, to generate a comparison result; [0129] The obtaining module 1180 is configured to obtain video surveillance data whose alignment result is consecutive addresses, where the video surveillance data is the video surveillance data of the channel;

[0130] The storage module 1150 is configured to directly store the video surveillance data into the allocated flash block.

14 is a schematic diagram of a hardware structure of an electronic device 140 for storing a video surveillance data according to an embodiment of the present disclosure. As shown in FIG. 14, the electronic device 140 includes:

[0132] One or more processors 141 and a memory 142, and one processor 141 is taken as an example in FIG.

[0133] The processor 141 and the memory 142 may be connected by a bus or the like, and the bus connection is taken as an example in FIG. [0134] The memory 142 is a non-volatile computer readable storage medium, and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, such as video surveillance data storage in the embodiments of the present application. The method corresponds to a program instruction/module (for example, the method shown in FIG. 2 to FIG. 6). The processor 1 41 performs various functional applications and data processing by executing non-volatile software programs, instructions, and modules stored in the memory 142, that is, implementing the video monitoring data storage method of the above method embodiment.

 [0135] The memory 142 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may be stored according to the use of the video surveillance data storage device. Data, etc. In addition, memory 142 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 142 can optionally include memory remotely located relative to processor 141, which can be connected to the video surveillance data storage device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

 [0136] the one or more modules are stored in the memory 142, and when executed by the one or more processors 141, performing a video surveillance data storage method in any of the foregoing method embodiments, for example, performing the above The method steps in Figures 2 through 6 are described and the functions of the modules in Figures 5 through 13 are implemented.

 [0137] The above product can perform the method provided by the embodiment of the present application, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiments of the present application.

 [0138] Embodiments of the present application provide a non-transitory computer readable storage medium storing computer-executable instructions that are executed by one or more processors, such as A processor 141 in FIG. 14 may enable the one or more processors to perform the video surveillance data storage method in any of the above method embodiments, for example, to perform the method steps and implementations in FIG. 2 to FIG. 6 described above. The function of the modules in Figures 5 to 13.

[0139] The embodiment of the present application provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, the program instructions being One or more processors executing, such as one processor 141 in FIG. 14, may cause the one or more processors to perform the video surveillance data storage method in any of the above method embodiments For example, the method steps in FIGS. 2 to 6 described above and the functions of the modules in FIGS. 5 to 13 are performed.

 [0140] The device embodiments described above are merely illustrative, wherein the unit described as a separate component may or may not be physically distributed, and the component displayed as a unit may or may not be a physical unit. , that is, it can be located in one place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

 [0141] Through the description of the above embodiments, those skilled in the art can clearly understand that the various implementation manners can be implemented by means of software plus a general hardware platform, and of course, by hardware. A person skilled in the art can understand that all or part of the process of implementing the above embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. Execution may include the flow of an embodiment of the methods as described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

 The above-mentioned embodiments are merely illustrative of several embodiments of the present application, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of this patent application is subject to the appended claims.

Claims

Claim  [Claim 1] A video surveillance data storage method, the method comprising:  Receiving one channel of video surveillance data, storing the video surveillance data into a designated flash block, and recording the number of times the video surveillance data is stored;  When the number of times of the video surveillance data storage reaches the first threshold 吋, assigning a corresponding flash block to the video surveillance data;  After receiving the video surveillance data again, the video surveillance data is directly stored in the allocated flash block.  [Claim 2] The method according to claim 1, wherein the method further comprises:  After the storage space of the allocated flash block is full, the allocated flash block that is full and all of the invalid data is erased in a block for the next reallocation; receiving the video surveillance data of the channel, And storing the video surveillance data in the specified flash block, and recording the number of times the video surveillance data is stored;  When the number of times the video surveillance data storage reaches the first threshold 吋, re-allocating the corresponding flash block for the video surveillance data;  Thereafter, receiving the video surveillance data again stores the video surveillance data directly into the redistributed flash block. [Claim 3] A video surveillance data storage method, the method comprising:  Receiving multiple video surveillance data;  Storing the video surveillance data into a designated flash block and recording the number of times each video surveillance data is stored;  When the number of times the video monitoring data is stored reaches the first threshold, the corresponding video block is allocated to the video monitoring data;  After the video surveillance data is determined to be the video surveillance data, the video surveillance data is acquired;  The video surveillance data is stored directly into the corresponding flash block allocated for the video surveillance data. [Claim 4] The method according to claim 3, wherein the method further comprises: Receiving multi-channel video surveillance data, recording the number of times that the video surveillance data of the channel is not continuously received;  And if the number of consecutive times that the video surveillance data is not received reaches a second threshold, releasing the possession of the video surveillance data to the allocated flash block.  [Claim 5] The method according to claim 3, wherein the method further comprises:  When the address of the video monitoring data received this time is not continuous with the address of each video monitoring data received last time, the video monitoring data received this time is stored in the specified flash memory block, and is recorded. The number of times the video surveillance data is stored; when the number of times the video surveillance data is stored reaches the first threshold, the corresponding video block is allocated to the video surveillance data;  After that, the address of the video surveillance data received each time is compared with the address of the video surveillance data stored last time to generate a comparison result; and the video surveillance data whose alignment result is consecutive addresses is obtained. The video monitoring data is the video surveillance data of the channel;  The video surveillance data is directly stored in the allocated flash block. [Claim 6] A video surveillance data storage device, wherein the device includes:  a recording module, configured to receive one channel of video surveillance data, store the video surveillance data into a designated flash block, and record the number of times the video surveillance data is stored;  a flash block allocation module, configured to allocate a corresponding flash block for the video surveillance data of the channel when the number of times the video surveillance data is stored reaches a first threshold threshold;  And a storage module, configured to store the video surveillance data in the allocated flash block directly after receiving the corresponding flash block for the video surveillance data.  [Claim 7] The device according to claim 6, wherein the device further comprises: An erasing module, configured to: after the storage space of the allocated flash block is full, erase the allocated flash blocks that are full and all of the invalid data into blocks for the next reallocation; Receiving the video surveillance data of the channel, storing the video surveillance data of the channel into the designated flash block, and recording the number of times the video surveillance data is stored; a flash block allocation module, configured to: when the number of times the video surveillance data is stored reaches a first threshold, re-allocating a corresponding flash block for the video surveillance data; and storing a module for storing After the allocated flash block is full and all of the invalid data is erased, the video surveillance data is received again and the video surveillance data is directly stored into the reallocated flash block.  [Claim 8] A video surveillance data storage device, wherein the device includes:  a multi-channel video monitoring data receiving module, configured to receive the multi-channel video monitoring data; a recording module, configured to store the video monitoring data in a specified flash block, and record the number of times each video monitoring data is stored;  a flash block allocation module, configured to allocate a corresponding flash block for the video surveillance data of the channel when the number of times the video monitoring data is stored reaches the first threshold threshold;  a determining module, configured to acquire the video monitoring data after determining that the received video monitoring data is the video monitoring data of the channel after the corresponding video block is allocated to the video monitoring data;  And a storage module, configured to directly store the video surveillance data into the corresponding flash block allocated for the video surveillance data. [Claim 9] The device according to claim 8, wherein the device further comprises:  a recording module, configured to receive the multi-channel video monitoring data, and record the number of times the video monitoring data of the channel is not continuously received;  And a releasing module, configured to release the possession of the video surveillance data of the channel to the allocated flash block if the number of consecutive times the video monitoring data is not received reaches a second threshold.  [Claim 10] The device according to claim 8, wherein the device further comprises:  a recording module, configured to: when the address of the video monitoring data received this time is not continuous with the address of each video monitoring data received last time, storing the video monitoring data received this time to the specified flash memory In the block, and record the number of times the video surveillance data is stored; a flash block allocation module, configured to: when the number of times of the video surveillance data storage reaches the first Threshold 吋, the corresponding video block is allocated a corresponding flash block; the address comparison module is configured to: afterwards, the address of the video monitoring data received each time and the last stored video monitoring of the channel And comparing the addresses of the data to generate a comparison result; the acquiring module is configured to obtain the video surveillance data whose alignment result is consecutive addresses, where the video surveillance data is the video surveillance data of the channel;  And a storage module, configured to directly store the video surveillance data into the allocated flash block.  [Claim 11] An electronic device, comprising:  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 instructions being executed by the at least one processor, To enable the at least one processor to perform the method of any of claims 1-5.  [Claim 12] A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, when the computer-executable instructions are executed by an electronic device, The electronic device performs the method of any of claims 1-5.  [Claim 13] A computer program product, comprising: a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions Executing by the electronic device, causing the electronic device to perform the method of any of claims 1-5.