CN104463796B - A kind of Vehicular video restorative procedure and device - Google Patents
A kind of Vehicular video restorative procedure and device Download PDFInfo
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Abstract
The present invention is applied to Vehicular video recovery technique field, there is provided a kind of Vehicular video restorative procedure and device, the Vehicular video restorative procedure include：Obtain the read-write requests of key message in Vehicular video；Detect the type of data in the read-write requests；When the type of the data is persistent data type, by the data Cun Chudao persistent data storage regions；When the type of the data is variable data type, by the data Cun Chudao variable data storage regions.Present invention, avoiding situation about reading and writing repeatedly when reading and writing key message, occur so that when Vehicular video damages, the key message of storage can be passed through, associated video frame up and down is repaired, so as to both reduce the difficulty of Vehicular video reparation, also improves the success rate of Vehicular video reparation.
Description
Technical field
The invention belongs to Vehicular video technical field, more particularly to a kind of Vehicular video restorative procedure and device.
Background technology
With the popularization of monitoring device, monitoring device is fitted with many vehicles, passes through monitoring device, registration of vehicle row
Information during sailing, generate Vehicular video.When traffic accident occurring or during traffic dispute, can by check Vehicular video come
Judge responsible party, therefore Vehicular video is that solve traffic accident or the vaild evidence of traffic dispute.
However, in existing Vehicular video monitoring system, Vehicular video is easily damaged, and the Vehicular video after damage is repaiied
Multiple difficulty is big and success rate is low.The reason is that existing Vehicular video uses FAT32 file system to data in magnetic disk pipe
Reason.The re-reading key message write in Vehicular video of FAT32 file reverses, the data block of storage key message is easily damaged, works as storage
After the data block damage of key message, it is impossible to associated video frame above and below Vehicular video is repaired by key message, therefore repair
Difficulty is big, and the success rate of reparation is low.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of Vehicular video restorative procedure, it is intended to solves vehicle-mounted to regard existing
In frequency monitoring system, key message is read and write repeatedly, causes the difficulty of follow-up Vehicular video reparation big and low success rate of problem.
The embodiment of the present invention is achieved in that a kind of Vehicular video restorative procedure, including：
Obtain the read-write requests of key message in Vehicular video；
Detect the type of data in the read-write requests；
When the type of the data is persistent data type, by the data Cun Chudao persistent data storage regions；
When the type of the data is variable data type, by the data Cun Chudao variable data storage regions.
The another object of the embodiment of the present invention is to provide a kind of Vehicular video prosthetic device, including：
Read-write requests acquisition module, for obtaining the read-write requests of key message in Vehicular video；
Detection module, for detecting the type of data in the read-write requests；
First memory module, for identification module, described in when the type of the data is persistent data type, inciting somebody to action
In data Cun Chudao persistent data storage regions；
Second memory module, can by the data Cun Chudao for when the type of the data is variable data type
Become in data storage areas.
In embodiments of the present invention, when the type of data is persistent data type, store data into persistent data and deposit
In storage area domain, when the type of data is variable data type, stores data into variable data storage region, data are entered
Row classification storage, avoid when reading and writing key message, situation about reading and writing repeatedly, after Vehicular video damages, Ke Yitong occur
The key message of storage is crossed, associated video frame up and down is repaired, so as to both reduce the difficulty of Vehicular video reparation, also improves car
Carry the success rate of video reparation.
Brief description of the drawings
Fig. 1 is the implementation process figure of Vehicular video restorative procedure provided in an embodiment of the present invention；
Fig. 2 is the implementing procedure figure for the reparation Vehicular video that the present embodiment provides；
Fig. 3 is the first structure block diagram of Vehicular video prosthetic device provided in an embodiment of the present invention；
Fig. 4 is the structured flowchart of Vehicular video prosthetic device second provided in an embodiment of the present invention；
Fig. 5 is the structured flowchart of Vehicular video prosthetic device the 3rd provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
Fig. 1 is the implementation process figure of Vehicular video restorative procedure provided in an embodiment of the present invention, and details are as follows：
In step S101, the read-write requests of key message in Vehicular video are obtained；
In step s 102, the type of data in the read-write requests is detected；
Wherein, type includes persistent data type and variable data type.
The data type of key message is divided into two parts：Persistent data type and variable data type.So, it is constant
The read-write number of data type can greatly reduce, so as to which the probability of data block damage also just lowers significantly.
In step s 103, when the type of the data is persistent data type, by the data Cun Chudao numerical invariants
According in storage region；
Wherein, when the type of the data is persistent data type, persistent data memory block is arrived into invariant parameter storage
In domain, the invariant parameter includes total block data, block size, information node (information node.Inode node) is total
Block number, inode sizes, each block group that block number, inode take in inode nodes, each block group in several, each block group
Bitmap block, inode bitmaps, at least one of the positional information of inode table.
Wherein, superblock refers to the module of storage file system metadata, can be by total block data, block size, information node
The storage of inode nodes is into the persistent data storage region of superblock in inode node total number, each block group.
Wherein, block group refers to the module for storing the data in addition to file system metadata, can be by block in each block group
Block number, inode sizes, each block chunk bitmap, inode bitmaps, the positional information of inode table that number, inode take are stored in
In the persistent data storage region of block group.
, can parameter by the data Cun Chudao when the type of the data is variable data type in step S104
According in storage region.
Wherein, when the type of the data is variable data type, variable data memory block is arrived into variable element storage
In domain, the variable element, which includes next available block, residue, can use block number, next available inode nodes, read-write
In time, review time, current state information, the available block number of current block group, current block group in available inode numbers at least
It is a kind of.
Wherein, superblock refers to the module of storage file system metadata, can be available by next available block, residue
Block number, next available inode nodes, access time, the review time, current state information storage to superblock can parameter
According in storage region.
Wherein, block group refers to the module for storing the data in addition to file system metadata, can be available by current block group
Available inode numbers storage is into the variable data storage region of block group in block number, current block group.
Above-mentioned data make a backup store according to sparse.Each key message is signed mark, and CRC check accordingly
Code ensures the accuracy of data.By distinguishing different signature marks, the type of these data is can determine, is follow-up number
Laid a good foundation according to reparation.
In embodiments of the present invention, when the type of data is persistent data type, store data into persistent data and deposit
In storage area domain, when the type of data is variable data type, stores data into variable data storage region, data are entered
Row classification storage, avoid when reading and writing key message, situation about reading and writing repeatedly occur, gone wrong in Vehicular video read-write
When, can repair data well, reduce corrupted data to greatest extent and caused by influence.
Embodiment two
Present embodiment describes before Vehicular video restorative procedure step S103, be divided into persistent data storage region and
The implementation process of variable data storage region, details are as follows：
In storage device, all data blocks are divided into persistent data storage region and variable data storage region.
Storage device can be any one existing storage device, such as disk, random access memory, flash memory, read-only storage
Device, programmable read only memory, electrically erasable programmable memory, register etc..
For ease of illustration by taking disk as an example, this disk is divided by block, block size is carried out according to the size of disk
Adjustment.The block size of disk can be calculated by getting disk size.Then a block is synthesized by the block of fixed number
Group is managed.Simultaneously by super block message and block group description information, and the information such as root inode nodes, magnetic is written to
In disk.
In embodiments of the present invention, data block is divided into two parts：Persistent data storage region and variable data storage
Region.So, the read-write number of persistent data storage region can greatly reduce, so as to which the probability of data block damage also just subtracts significantly
It is low.
Embodiment three
Fig. 2 is the implementing procedure figure for the reparation Vehicular video that the present embodiment provides, and details are as follows：
S201, when the Vehicular video damages, call the data in the persistent data storage region；
S202, according to the data, repair the Vehicular video.
Wherein, the data in persistent data storage region are called, reconstruct key message, by key message, are repaired vehicle-mounted
Data block in video.
Exemplified by repairing Vehicular video, details are as follows：
It is exactly temporal information that Vehicular video, which has a critically important information,.Therefore, the data organizational structure of Vehicular video here
It is divided into three ranks.
1. root, for depositing the dated information of institute in this disk；
2. time index information, for depositing the information of this day all Video data, including：The channel number of video recording,
Inode nodes, data type, record a video the beginning and ending time, some private attribute informations of recording a video；
3. Video data.
When some data blocks are damaged in Vehicular video, by Video data can build time index information, when passing through
Between index information construction root, so as to reduce the data organizational structure of Vehicular video, repair some data blocks in Vehicular video.
Below according to the type of the data block of storage Vehicular video, illustrate the implementation process for repairing the data block of damage, in detail
State as follows：
1. repair the superblock of damage
Because superblock has multiple backups, and superblock in the way of sparse storage in the power that block group number is 3,5,7
Exist in the block group of side.The superblock for reading backup can be first passed through, checks signature mark and CRC check value.If have no problem
Just directly use Backup Data block.All problematic if all of backup block, then the constant part of superblock is by obtaining disk
Size, the additional calculation formula pre-defined obtain.A part of information of constant part in superblock is by reading inode
Bitmap and block bitmap are obtained.Other information can be handled by setting default value.
2. repair the block group description information of damage
The constant part of block group description information is repaired using the processing strategy same with superblock.
Variable part, can by simple calculate then by reading inode bitmap and block bitmap content
To obtain respective value, complete to repair.
3. repair the root of damage
The inode node numbers of root can be learnt by superblock, read the inode nodes of root, and obtain root
Catalogue data.Determine whether root damages by checking corresponding signature mark.If root damages, then need
Repaired offline, i.e., disk is removed and repaired with special fix tool.
By traveling through all data blocks of whole disk, preceding 4 bytes of each disk block are read.Check this four bytes
Whether the signature mark of time index information is equal to.It is if equal, then it represents that the data block stores time index information data,
Read the time index information data, it is possible to build a root item.Believed by traveling through and getting all time indexs
Breath data block just can build complete root data.
4. repair the inode data blocks of damage
Whole disk check signature mark is traveled through, the data type that each data block is stored can be learnt.According to data
Type, the effect of all data blocks in each block group can be obtained.It can just be constructed according to the block number of these data blocks and respective value
Inode nodes, those values that can not be obtained are corresponded to, are just directly replaced with default value.
In the present embodiment, the data in persistent data storage region are called, Vehicular video is repaired, can handle well
The Vehicular video damaged in vehicle-mounted video monitoring device disk, realize the reparation of Vehicular video.
Example IV
Fig. 3 is the first structure block diagram of Vehicular video prosthetic device provided in an embodiment of the present invention, the Vehicular video reparation
Device can be run in vehicle-mounted video monitoring device.For convenience of description, it illustrate only part related to the present embodiment.
Reference picture 3, the Vehicular video prosthetic device, including：
Read-write requests acquisition module 31, for obtaining the read-write requests of key message in Vehicular video；
Detection module 32, for detecting the type of data in the read-write requests；
First memory module 33, for identification module, for when the type of the data is persistent data type, by institute
State in data Cun Chudao persistent data storage regions；
Second memory module 34, for when the type of the data is variable data type, by the data Cun Chudao
In variable data storage region.
In a kind of implementation of the present embodiment, with reference to figure 4, Fig. 4 is that Vehicular video provided in an embodiment of the present invention is repaiied
The structured flowchart of apparatus for coating second, the Vehicular video prosthetic device, in addition to：
Division module 35, in storage device, all data blocks are divided into persistent data storage region and can
Become data storage areas.
In a kind of implementation of the present embodiment, in the Vehicular video prosthetic device, first memory module, tool
Body is used for when the type of the data is variable data type, by variable element storage into variable data storage region, institute
Block number, next available inode nodes, access time, inspection can be used including next available block, residue by stating variable element
Look at least one of available inode numbers in time, current state information, the available block number of current block group, current block group.
In a kind of implementation of the present embodiment, in the Vehicular video prosthetic device, the second memory module tool
Body is used for when the type of the data is variable data type, by variable element storage into variable data storage region, institute
Block number, next available inode nodes, access time, inspection can be used including next available block, residue by stating variable element
Look at least one of available inode numbers in time, current state information, the available block number of current block group, current block group.
In a kind of embodiment provided in an embodiment of the present invention, with reference to figure 5, Fig. 5 is car provided in an embodiment of the present invention
The structured flowchart of load video prosthetic device the 3rd, the Vehicular video prosthetic device, in addition to：
Calling module 36, for when the Vehicular video damages, calling the data in the persistent data storage region；
Repair module 37, for according to the data, repairing the Vehicular video.
Device provided in an embodiment of the present invention can be applied in foregoing corresponding embodiment of the method, and details are referring to above-mentioned reality
The description of example is applied, will not be repeated here.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Software is helped to add the mode of required common hardware to realize.Described program can be stored in read/write memory medium, described
Storage medium, as random access memory, flash memory, read-only storage, programmable read only memory, electrically erasable programmable storage
Device, register etc..The storage medium is located at memory, and processor reads the information in memory, this hair is performed with reference to its hardware
Method described in bright each embodiment.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
- A kind of 1. Vehicular video restorative procedure, it is characterised in that including：Obtain the read-write requests of key message in Vehicular video；Detect the type of data in the read-write requests；When the type of the data is persistent data type, by the data Cun Chudao persistent data storage regions；When the type of the data is variable data type, by the data Cun Chudao variable data storage regions；During the Vehicular video damage, the data in persistent data storage region are called, reconstruct key message, are believed by key Breath, repair the data block in Vehicular video.
- 2. Vehicular video restorative procedure as claimed in claim 1, it is characterised in that described when the type of the data is not When becoming type, before in data block constant the data Cun Chudao, including：In storage device, all data blocks are divided into persistent data storage region and variable data storage region.
- 3. Vehicular video restorative procedure as claimed in claim 1, it is characterised in that described when the type of the data is constant During data type, by the data Cun Chudao persistent data storage regions, it is specially：It is described by invariant parameter storage into persistent data storage region when the type of the data is persistent data type Invariant parameter includes total block data, block size, information node inode node total number, inode nodes in each block group, each Block number, the block number of inode occupancy, inode sizes, each block chunk bitmap, inode bitmaps, the position of inode table in block group At least one of information.
- 4. Vehicular video restorative procedure as claimed in claim 1, it is characterised in that described when the type of the data is variable During data type, by the data Cun Chudao variable data storage regions, it is specially：It is described by variable element storage into variable data storage region when the type of the data is variable data type Variable element, which includes next available block, residue, can use block number, next available inode nodes, access time, inspection At least one of available inode numbers in time, current state information, the available block number of current block group, current block group.
- 5. Vehicular video restorative procedure as claimed in claim 1, it is characterised in that be numerical invariant when the type of the data During according to type, after in the data Cun Chudao persistent data storage regions, in addition to：When the Vehicular video damages, the data in the persistent data storage region are called；According to the data, the Vehicular video is repaired.
- A kind of 6. Vehicular video prosthetic device, it is characterised in that including：Read-write requests acquisition module, for obtaining the read-write requests of key message in Vehicular video；Detection module, for detecting the type of data in the read-write requests；First memory module, for identification module, for when the type of the data is persistent data type, by the data Store in persistent data storage region；Second memory module, can parameter by the data Cun Chudao for when the type of the data is variable data type According in storage region；Wherein, the Vehicular video prosthetic device calls the data in persistent data storage region, weight when Vehicular video damages Structure key message, by key message, repair the data block in Vehicular video.
- 7. Vehicular video prosthetic device as claimed in claim 6, it is characterised in that the Vehicular video prosthetic device, also wrap Include：Division module, in storage device, all data blocks to be divided into persistent data storage region and variable data Storage region.
- 8. Vehicular video prosthetic device as claimed in claim 6, it is characterised in that first memory module is specifically used for working as When the type of the data is persistent data type, by invariant parameter storage into persistent data storage region, the constant ginseng Number is included in total block data, block size, information node inode node total number, each block group in inode nodes, each block group Block number, inode take block number, inode sizes, each block chunk bitmap, inode bitmaps, inode table positional information in At least one.
- 9. Vehicular video prosthetic device as claimed in claim 6, it is characterised in that second memory module is specifically used for working as When the type of the data is variable data type, by variable element storage into variable data storage region, the variable ginseng Number include next available block, residue can with block number, next available inode nodes, access time, the review time, At least one of available inode numbers in current state information, the available block number of current block group, current block group.
- 10. Vehicular video prosthetic device as claimed in claim 6, it is characterised in that the Vehicular video prosthetic device, also wrap IncludeCalling module, for when the Vehicular video damages, calling the data in the persistent data storage region；Repair module, for according to the data, repairing the Vehicular video.
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| CN201410676092.5A CN104463796B (en) | 2014-11-21 | 2014-11-21 | A kind of Vehicular video restorative procedure and device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498371A (en) * | 2002-01-31 | 2004-05-19 | 松下电器产业株式会社 | Memory device, terminal apparatus and data repair system |
| CN103678026A (en) * | 2012-09-18 | 2014-03-26 | 杭州海康威视系统技术有限公司 | Storing and repairing method and storing and repairing device for repairable video monitoring data |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498371A (en) * | 2002-01-31 | 2004-05-19 | 松下电器产业株式会社 | Memory device, terminal apparatus and data repair system |
| CN103678026A (en) * | 2012-09-18 | 2014-03-26 | 杭州海康威视系统技术有限公司 | Storing and repairing method and storing and repairing device for repairable video monitoring data |
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