CN105183396A - Storage method for enhancing vehicle-mounted DVR video data traceability - Google Patents
Storage method for enhancing vehicle-mounted DVR video data traceability Download PDFInfo
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Abstract
The invention relates to a storage method for enhancing vehicle-mounted DVR video data traceability. According to the method, a storage medium of a stored video is divided into three regions including a primary index region, a video data region and an index backup region. The primary index region indexes the video data region, the index backup region backups the primary index region, the video data region is arranged between the primary index region and the index backup region in a spaced mode in a physical address, if the primary index region is damaged, the primary index region is restored through the index backup region, and if both the primary index region and the index backup region are damaged, the primary index region and the index backup region are restored through the video data region. According to the method, by means of three-layer protection, the traceability of video data on the storage medium is enhanced.
Description
Technical field
The present invention relates to a kind of Video data storage means, be specifically related to a kind of storage means strengthening vehicle-mounted DVR Video data reversibility.
Background technology
Along with 3G and the 4G business popularization gradually at home that transfer rate is more and more faster, the boosting fast development of wireless vehicle-mounted video monitor industry.Wireless vehicle-mounted video monitor system adopts 3G/4G communication transmission technology and is aided with ripe gps technology can carry out real-time audio and video monitoring, real-time recording storage, history video recording passback to various vehicle, the functions such as vehicle driving trace tracking, realize the omnidirectional tracking of the ruuning situation to vehicle.Therefore more and more favor by user, the use on the vehicle in use of all trades and professions is also more and more universal, no matter is at bus, taxi, long-distance passenger transportation car, or logistics distribution vehicle, bank note transport car, 110 police cars etc. can see the figure of wireless vehicle-mounted video monitor equipment.And the Vehicular video technical standard of release is about to along with Ministry of Communications, originally under 2G business, vehicle-mounted gps equipment will toward the upgrading of 3G/4G vehicle-mounted gps video equipment, and under the promotion of the market demand and national policy, following vehicle-mounted wireless video will obtain using more and more widely on vehicle in use.
Concerning Vehicular video monitoring system, audio frequency and video memory technology is crucial technology, and the data storage that some main flow file system are not proper for such an occasion now more or less comes with some shortcomings in other words, first with regard to storage efficiency, existing main flow file system generally all needs temporally to carry out subpackage storage (storing a file in such as 30 minutes) in interval to audio, video data, delete because storage medium needs to retrieve some ancient deeds after having expired, ensure that the audio, video data newly recorded can store, such continuous print stores, what deletion brought not only brings disk fragments, and Wear-leveling algorithms do badly cause the storage medium life-span not high.Secondly could use after the file system of general main flow all needs carry, need when particularly log type is file system mounted to carry out legitimacy, integrity check, carry is more time-consuming, if some corrupted data of file system, this time can be longer, and even carry is not gone up, and cannot use.Inevitably there is the situation of abnormal power-down in vehicle environmental again, audio, video data is caused seriously to be lost, the even file system corruption situation that cannot use, usually when occurring that fortuitous event client will transfer the audio, video data of corresponding period, but cannot transfer this to the very bad experience of client, cause customer complaint to increase sharply.Therefore one efficient, stable, reliable file system is most important for Vehicular video monitoring system.
Summary of the invention
For solving the problems of the technologies described above, the present invention is directed to existing vehicle-mounted DVR video recording equipment, invent a kind of new storage means, after being used for ensureing that storing the storage medium critical data district of recording a video is destroyed, still can recall the Video data that storage medium was recorded, thus farthest ensure the reversibility of Video data on storage medium.
In order to achieve the above object, the present invention proposes a kind of storage means strengthening vehicle-mounted DVR Video data reversibility, the method is divided into three districts the storage medium storing video recording: master index district, Video data district and index backup area, index Video data district of described master index district, described index backup area backs up master index district, described master index district and archive index district be midfeather Video data district on physical address, if master index district is destroyed, recovered by index backup area, if master index district and index backup area all destroyed, then recovered by Video data district.
Further, described Video data district comprises the long data block of n+1 fixed size, described long data block comprises the av storage block of some fixed sizes, described av storage block comprises cephalomere and data section, described cephalomere comprise this data block recording time, whether continuously record parameter and this av storage block and next av storage block, described data section comprises Video data.
Further, described master index district comprises n+1 index, a described n+1 index and n+1 long data block one_to_one corresponding.
Further, described av storage block stores according to recording time order, if master index district and index backup area are destroyed, by reviewing the cephalomere of av storage block, find out the recording time of av storage block, re-establishing master index and archive index.
The present invention is by adopting technique scheme, compared with prior art, tool has the following advantages: a kind of storage means strengthening vehicle-mounted DVR Video data reversibility provided by the invention, enhance the reversibility of data, even if bad environments on car, cause critical data on storage medium to be destroyed, also re-establishing index by analyzing data block one by one, recovering the data of loss.
Accompanying drawing explanation
Fig. 1 is the storage medium structural drawing of embodiments of the invention.
Fig. 2 is the av storage block structural drawing of embodiments of the invention.
Embodiment
Now the present invention is further described with embodiment by reference to the accompanying drawings.
As a specific embodiment, as shown in Figure 1-2, a kind of storage means strengthening vehicle-mounted DVR Video data reversibility of the present invention, the method is divided into three districts the storage medium storing video recording: master index district, Video data district and index backup area, index Video data district of described master index district, described index backup area backs up master index district, described master index district and archive index district be midfeather Video data district on physical address, if master index district is destroyed, recovered by index backup area, if master index district and index backup area all destroyed, then recovered by Video data district.
As shown in Figure 1, in the present embodiment, described Video data district 2 comprises the long data block of n+1 fixed size, i.e. long data block 0, long data block 1 ... long data block n, described each long data block comprises the av storage block of 16 fixing 4M sizes, i.e. storage block 0, storage block 1 ... storage block 15, as shown in Figure 2, av storage block comprises av cephalomere 0, av data section 0, av data section 1 ... av data section 1023, av cephalomere 0 comprises the recording time of this storage block, record parameter and this av storage block and next av storage block whether continuously, av data section then comprises Video data.
In the present embodiment, described master index district comprises n+1 index, i.e. index 0, index 1 ... index n, a described n+1 index and n+1 long data block one_to_one corresponding, a described long data block comprises the av storage block of 16 4M sizes, therefore, an index can be expressed as 16 continuous print av storage blocks, such as index 0 represents the long data block of first 4M*16, index 1 represents the long data block of second 4M*16, by that analogy, then calculate the size in Video data district 2 for (64*(N+1)) M, therefore, each index in described master index district represents with the recording time of first piece of av storage block of corresponding long data block.
In the present embodiment, described recording time is constantly pushed ahead, ensure that the uniqueness of index, described av storage block stores in strict accordance with recording time order, the first storage of first recording, ensure that data are linear memories, like this, just can be reviewed the cephalomere of av storage block one by one by the long data block in Video data district when master index district and archive index district are all destroyed, find out the recording time of av storage block, re-establish index, and then set up master index district and archive index district, this storage means passes through three-layer protection, enhance the reversibility of Video data on storage medium, even if bad environments on car, critical data on storage medium is caused to be destroyed, also index is re-established by analyzing long data block one by one, recover the data of loss.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (4)
1. one kind strengthens the storage means of vehicle-mounted DVR Video data reversibility, it is characterized in that the storage medium storing video recording is divided into three districts: master index district, Video data district and index backup area, index Video data district of described master index district, described index backup area backs up master index district, described master index district and archive index district be midfeather Video data district on physical address, if master index district is destroyed, recovered by index backup area, if master index district and index backup area all destroyed, then recovered by Video data district.
2. a kind of storage means strengthening vehicle-mounted DVR Video data reversibility according to claim 1, it is characterized in that: described Video data district comprises the long data block of n+1 fixed size, described long data block comprises the av storage block of some fixed sizes, described av storage block comprises cephalomere and data section, described cephalomere comprise this data block recording time, whether continuously record parameter and this av storage block and next av storage block, described data section comprises Video data.
3. a kind of storage means strengthening vehicle-mounted DVR Video data reversibility according to claim 1 and 2, is characterized in that: described master index district comprises n+1 index, a described n+1 index and n+1 long data block one_to_one corresponding.
4. a kind of storage means strengthening vehicle-mounted DVR Video data reversibility according to claim 2, it is characterized in that: described av storage block stores according to recording time order, if master index district and index backup area are destroyed, by reviewing the cephalomere of av storage block, find out the recording time of av storage block, re-establish master index and archive index.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510605588.8A CN105183396A (en) | 2015-09-22 | 2015-09-22 | Storage method for enhancing vehicle-mounted DVR video data traceability |
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| CN201510605588.8A CN105183396A (en) | 2015-09-22 | 2015-09-22 | Storage method for enhancing vehicle-mounted DVR video data traceability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111857581A (en) * | 2020-07-06 | 2020-10-30 | 浙江鸿泉电子科技有限公司 | Data storage processing method and system |
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| CN103745007A (en) * | 2014-01-24 | 2014-04-23 | 深圳市华宝电子科技有限公司 | File managing method and device |
| CN104317833A (en) * | 2014-10-10 | 2015-01-28 | 深圳市锐明视讯技术有限公司 | Method and device for recovering system file indexes |
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2015
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| WO2010148539A1 (en) * | 2009-06-26 | 2010-12-29 | Intel Corporation | Techniques to detect video copies |
| CN102314383A (en) * | 2011-09-28 | 2012-01-11 | 成都市华为赛门铁克科技有限公司 | Failure recovery method and device for data index |
| CN102981779A (en) * | 2012-11-22 | 2013-03-20 | 华为技术有限公司 | Data processing method and device |
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Application publication date: 20151223 |