CN104020964A - Embedded video storage method - Google Patents
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- CN104020964A CN104020964A CN201410271480.5A CN201410271480A CN104020964A CN 104020964 A CN104020964 A CN 104020964A CN 201410271480 A CN201410271480 A CN 201410271480A CN 104020964 A CN104020964 A CN 104020964A
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Abstract
The invention discloses an embedded video storage method and belongs to the technical field of computer storage safety. The method includes the following steps that video data are stored in the mode of a bare system, and a storage device is divided according to the form of device headers, page tables and data blocks through the storage format of the video data; each page table comprises a page table header and at least one data block; when a magnetic disk has a bad block, the bad block is remapped through a database, the bad block is effectively managed, and access to the bad block again next time is avoided; when the database breaks down, the device headers and the table headers can be traversed again according to the storage mechanism of the database, and a complete bad block management database is rebuilt. Compared with the prior art, the embedded video storage method has the advantages of being reasonable in design and convenient to operate, and not only is magnetic disk fragmentation greatly reduced, but also index efficiency is improved; meanwhile, the magnetic disk access frequency is effectively reduced, the service life of the magnetic disk is prolonged, and product stability is improved.
Description
Technical field
The present invention relates to Computer Storage safety technique field, specifically a kind of embedded video storage means.
Background technology
Embedded system is a kind of special computer system, as a part for device or equipment.Conventionally, embedded system is that a control program is stored in the flush bonding processor control panel in ROM.Some embedded system also comprises operating system, but most of embedded system is all to realize whole steering logic by single program.An embedded system device is generally all made up of embedded computer system and actuating unit, and embedded computer system is the core of whole embedded system, is made up of hardware layer, middle layer, system software layer and application software layer.Actuating unit is also referred to as controlled device, and it can accept the control command that embedded computer system sends, and carries out operation or the task of defined.
In embedded device, due to file system highly versatile, so research staff in memory module software development, generally selects the mode of file to store, be convenient to like this exploitation, user's access and safeguard at present; The file system but the function such as document retrieval, inquiry places one's entire reliance upon, in the time of file index, can successively read the gauge outfit between disk region, build and top margin, and each read-write all can increase the access times of physical disk.When video stream media storage, because data volume is increased sharply, cause magnetic disc access times to increase, adopt the storage scheme of file system to be easy to cause certain piece district of disk to occur damaging, the problems such as disk fragments is too much, and once damaging appears in certain physical space of disk, may cause multiple File loses maybe cannot access, occur in this case, based on the storage mode of file system, must be by whole disk formatting, just likely storage system is recovered, format simultaneously can cause the File lose in whole disk region, so the storage scheme based on file system is in Streaming Media storage, can cause system storage efficiency lower, system is unstable.
Summary of the invention
Technical assignment of the present invention is to provide a kind of embedded video storage means.
Technical assignment of the present invention is realized in the following manner, and the method step is as follows: video data is stored in the mode of naked system, and its storage format demarcates storer according to the form of device head, page table and data block; In each page table, comprise page table head and at least one data block;
In the time that bad piece appears in disk, usage data storehouse remaps bad piece, effectively bad piece is managed, and avoids continuing next time bad piece of access; In the time running into database appearance damage, can, according to the memory mechanism of self, again travel through device head and gauge outfit, re-create complete bad block management database.
Relative position, total page number, equipment id and current data side-play amount that described device head comprises current page table.
The usage flag that described page table comprises current page, the initial time of page table data.
The time offset that described data block comprises relative page table.
Compared to the prior art a kind of embedded video storage means of the present invention, has the features such as reasonable in design, easy to operate, not only greatly reduces disk fragments, improves index efficiency; Effectively reduce magnetic disc access times, promote the stability of disk serviceable life and product simultaneously; In addition, video data, taking data block as unit, is stored in the page of each logical volume, be convenient to management, and data access performance effectively improves.
Brief description of the drawings
Accompanying drawing 1 is a kind of system chart of embedded video storage means.
Embodiment
Embodiment 1:
Video data is stored in the mode of naked system, directly the video data receiving is write in raw device, can reduce the generation of disk fragments, improve recall precision.Its storage format demarcates storer according to the form of device head, page table and data block; Relative position, total page number, equipment id and current data side-play amount that device head comprises current page table; The usage flag that page table comprises current page, the initial time of page table data; The time offset that data block comprises relative page table; In each page table, comprise page table head and a data block.
In the time that bad piece appears in disk, usage data storehouse remaps bad piece, effectively bad piece is managed, and avoids continuing next time bad piece of access; In the time running into database appearance damage, can, according to the memory mechanism of self, again travel through device head and gauge outfit, re-create complete bad block management database, ensure integrality and the stable row of storage system.
Embodiment 2:
Video data is stored in the mode of naked system, directly the video data receiving is write in raw device, can reduce the generation of disk fragments, improve recall precision.Its storage format demarcates storer according to the form of device head, page table and data block; Relative position, total page number, equipment id and current data side-play amount that device head comprises current page table; The usage flag that page table comprises current page, the initial time of page table data; The time offset that data block comprises relative page table; In each page table, comprise page table head and two data blocks.
In the time that bad piece appears in disk, usage data storehouse remaps bad piece, effectively bad piece is managed, and avoids continuing next time bad piece of access; In the time running into database appearance damage, can, according to the memory mechanism of self, again travel through device head and gauge outfit, re-create complete bad block management database, ensure integrality and the stable row of storage system.
Embodiment 3:
Video data is stored in the mode of naked system, directly the video data receiving is write in raw device, can reduce the generation of disk fragments, improve recall precision.Its storage format demarcates storer according to the form of device head, page table and data block; Relative position, total page number, equipment id and current data side-play amount that device head comprises current page table; The usage flag that page table comprises current page, the initial time of page table data; The time offset that data block comprises relative page table; In each page table, comprise page table head and nine data blocks.
In the time that bad piece appears in disk, usage data storehouse remaps bad piece, effectively bad piece is managed, and avoids continuing next time bad piece of access; In the time running into database appearance damage, can, according to the memory mechanism of self, again travel through device head and gauge outfit, re-create complete bad block management database, ensure integrality and the stable row of storage system.
By embodiment above, described those skilled in the art can be easy to realize the present invention.But should be appreciated that the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, described those skilled in the art can the different technical characterictic of combination in any, thereby realizes different technical schemes.
Claims (4)
1. an embedded video storage means, is characterized in that, the method step is as follows:
Video data is stored in the mode of naked system, and its storage format demarcates storer according to the form of device head, page table and data block; In each page table, comprise page table head and at least one data block;
In the time that bad piece appears in disk, usage data storehouse remaps bad piece, effectively bad piece is managed, and avoids continuing next time bad piece of access; In the time running into database appearance damage, can, according to the memory mechanism of self, again travel through device head and gauge outfit, re-create complete bad block management database.
2. a kind of embedded video storage means according to claim 1, is characterized in that, described device head comprises the relative position of current page table, total page number, equipment id and current data side-play amount.
3. a kind of embedded video storage means according to claim 1, is characterized in that, described page table comprises the usage flag of current page, the initial time of page table data.
4. a kind of embedded video storage means according to claim 1, is characterized in that, described data block comprises the time offset of relative page table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271480.5A CN104020964A (en) | 2014-06-18 | 2014-06-18 | Embedded video storage method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410271480.5A CN104020964A (en) | 2014-06-18 | 2014-06-18 | Embedded video storage method |
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| CN104020964A true CN104020964A (en) | 2014-09-03 |
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| CN201410271480.5A Pending CN104020964A (en) | 2014-06-18 | 2014-06-18 | Embedded video storage method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008919A (en) * | 2007-01-31 | 2007-08-01 | 浙江大学 | Audio/video data access method and device based on raw device |
| CN101872326A (en) * | 2010-06-24 | 2010-10-27 | 济南大学 | Data storage management method for OTP flash memory under embedded environment |
| CN101976181A (en) * | 2010-10-15 | 2011-02-16 | 杭州宏杉科技有限公司 | Management method and device of storage resources |
| CN102136290A (en) * | 2011-04-21 | 2011-07-27 | 北京联合大学 | Method for storing embedded real-time video files |
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2014
- 2014-06-18 CN CN201410271480.5A patent/CN104020964A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008919A (en) * | 2007-01-31 | 2007-08-01 | 浙江大学 | Audio/video data access method and device based on raw device |
| CN101872326A (en) * | 2010-06-24 | 2010-10-27 | 济南大学 | Data storage management method for OTP flash memory under embedded environment |
| CN101976181A (en) * | 2010-10-15 | 2011-02-16 | 杭州宏杉科技有限公司 | Management method and device of storage resources |
| CN102136290A (en) * | 2011-04-21 | 2011-07-27 | 北京联合大学 | Method for storing embedded real-time video files |
Non-Patent Citations (1)
| Title |
|---|
| 李立群: "嵌入式视频存储和检索系统的设计与实现", 《中国优秀博硕士学位论文全文数据库（硕士） 信息科技辑》 * |
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Application publication date: 20140903 |