CN104123952B - Cache-free disc burning method and device - Google Patents
Cache-free disc burning method and device Download PDFInfo
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- CN104123952B CN104123952B CN201410342841.0A CN201410342841A CN104123952B CN 104123952 B CN104123952 B CN 104123952B CN 201410342841 A CN201410342841 A CN 201410342841A CN 104123952 B CN104123952 B CN 104123952B
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Abstract
The invention is applicable to the field of computer data storage and provides a cache-free disc burning method and device. The method includes that files to be burned are read into an internal storage; the files to be burned in the internal storage are loaded in a disc burning driver to be directly burned in a disc data area; metadata of each already burned file are generated in the internal storage; after burning is finished, metadata which correspond to all already burned files in a disc are obtained from the internal storage and written in a metadata area of the disc. According to the cache-free disc burning method and device, extra caches are not required, middle steps are reduced, the reliability is improved, mirror image files and metadata are made without waiting for all burned files to be read in the internal storage, thereby, unnecessary middle steps of making the mirror image files are reduced, and the whole burning time of the disc is reduced.
Description
Technical field
The invention belongs to technical field of computer data storage, particularly relate to a kind of without caching CDRW method
And device.
Background technology
Big data age data capacity and importance constantly promote, for the storage capacity of system, performance, can
By property and cost, huge challenge is proposed.And using optical disc storage data is that a kind of cheap data preserve for a long time
Mode.
Existing writing process, needs first being burned to file or catalogue set is merged into as CD mirroring form,
Ensure that the actual capacity of file set is less than CD capacity, and need to build in advance Compact Disc Metadata district information,
Including file each in log file set position on CD.Then by CD burning driver light
Disk mirroring is burnt in CD.This process needs to provide extra caching for CD mirroring.
On the one hand existing mode may cause being burned to data when making mirror image by illegal access, the opposing party
Face also causes CD burning process longer, and may need manual intervention.
Summary of the invention
In view of the above problems, it is an object of the invention to provide a kind of without caching CDRW method and device,
Aim to solve the problem that owing to existing imprinting scheme first need to make compact disc image files being burned to file set merging,
Carry out imprinting the most again so that the technical problem that data are dangerous and writing time is longer.
On the one hand, described nothing caching CDRW method comprises the steps:
File will be burned to read in internal memory；
It is loaded into internal memory is burned to file in CD burning driver, is directly burnt to data of optical disk district；
The metadata of each imprinting file is generated in internal memory；
After imprinting completes, from internal memory, obtain all files of imprinting are corresponding in CD metadata and write
The meta-data region of CD.
On the other hand, described nothing caching disc recording apparatus includes:
File reads in unit, reads in internal memory for being burned to file；
File imprinting unit, for being loaded into being burned to file in internal memory in CD burning driver, directly
It is burnt to data of optical disk district；
Metadata signal generating unit, for generating the metadata of each imprinting file in internal memory；
Metadata writing unit, for after imprinting completes, obtains all imprintings literary composition in CD from internal memory
Metadata that part is corresponding also writes the meta-data region of CD.
The invention has the beneficial effects as follows: the present invention is without first making CD mirroring being burned to file set merging
File or in advance generate meta-data region, carries out imprinting the most again, but directly leads to successively being burned to file
Cross CD burning driver to be burnt in CD, can realize automatically without caching CDRW method based on this
Flowing water imprinting, reduces unnecessary image file and makes intermediate link, it is ensured that reduce while Information Security
The overall writing time of CD.
Accompanying drawing explanation
Fig. 1 is the flow chart without caching CDRW method that first embodiment of the invention provides；
Fig. 2 is the flow chart without caching CDRW method that second embodiment of the invention provides；
Fig. 3 CD zoning schematic diagram；
Fig. 4 is the block diagram without caching disc recording apparatus that third embodiment of the invention provides；
Fig. 5 is the block diagram without caching disc recording apparatus that fourth embodiment of the invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Technical solution of the present invention is applicable to optical disc recording system, carves including batch CD, one or more CD
Record driver, internal memory and storage control.Described CD burning driver passes through Back end data passage and storage
Controller is connected, and internal memory is connected with described storage control, and described CD can be by automatic or manual
Mode is loaded in CD burning driver.The present invention is without first making CD being burned to file set merging
Image file or in advance generate meta-data region, carries out imprinting the most again, but directly depends on being burned to file
Secondary it is burnt in CD by CD burning driver.The present invention reduces intermediate steps, improve reliability；
Read in internal memory owing to withouting waiting for all imprinting files, make image file and metadata, decrease not
Necessary image file makes intermediate link, reduces CD entirety writing time.Of the present invention in order to illustrate
Technical scheme, illustrate below by specific embodiment.
Embodiment one:
Fig. 1 shows the flow process without caching CDRW method that the embodiment of the present invention provides, for the ease of saying
Bright illustrate only the part relevant to the embodiment of the present invention.
Step S101, file will be burned to read in internal memory.
Step S102, it is loaded into internal memory is burned to file in CD burning driver, is directly burnt to light
Dish data field.
Step S103, in internal memory, generate the metadata of each imprinting file.
If such as udf260 file system, after each file write CD, this document to be recorded in internal memory
Document entry File Entry, including length, access time, ICB label etc., if there being catalogue, each
Catalogue file identifier descriptor File to be had Identifier Descriptor etc..
Step S104, after imprinting completes, from internal memory, obtain the unit that all files of imprinting are corresponding in CD
Data also write the meta-data region of CD.
Described imprinting completes to include two kinds of situations, first: data of optical disk district has write full；Second: although CD
Data field is the most not full, but without being burned to file in internal memory, the most all of to be burned to file imprinting complete
Finish.From internal memory, now obtain metadata corresponding to all files of imprinting and write the meta-data region of CD.
The present embodiment method, without using extra caching, decreases intermediate steps, improves reliability；By
Reading in internal memory in withouting waiting for all imprinting files, make image file and metadata, decreasing need not
The image file wanted makes intermediate link, decreases the overall writing time of CD.
As preferably, in the present embodiment, CD burning driver has multiple, it is possible to achieve file in parallel is carved
Record.Concrete, above-mentioned steps S102 specifically includes following step:
A1, strategically, distributes to multiple CD burning driver by the file that is burned in internal memory；
A2, file correspondence will be burned to it is loaded into each CD burning driver, be burnt to CD the most parallel
Data field.
Here, concrete allocation strategy within the present embodiment limit of consideration, is not treated according to the actual requirements
Imprinting file distributes, and such as according to file size, each can be burned to file and be assigned to corresponding CD burning
Driver, or the CD burning driving of correspondence can be distributed to according to the degree of being associated being burned to file
Device, certainly also has other allocation strategies, does not specifically describes.Then each it is burned to file load
In corresponding CD burning driver, each CD burning driver is burnt to data of optical disk district the most parallel.
In above-mentioned steps S103, in internal memory, the method for the metadata of stored CD file can use centralized
Distribution method, it would however also be possible to employ demand assigned method.
For centralised allocation method, described step S103 specifically includes:
B1, in internal memory distribute fixed size region；
B2, when CD burning driver imprinting file, generate described imprinting file corresponding element data and store
In described region.
In this method of salary distribution, the region for each CD one fixed size of distribution is used for depositing optical file pair
The metadata answered, when imprinting, generates metadata corresponding to imprinting file and is stored in corresponding region.
For allocation method based on demand, above-mentioned steps S103 specifically includes:
C1, when CD burning driver imprinting file, generate described imprinting file corresponding element data；
C2, calculate described metadata size, and in internal memory, divide corresponding size area；
C3, described metadata is stored in described region.
In this method of salary distribution, when imprinting file, first generate the metadata that imprinting file is corresponding, then basis
Metadata size divides the region of corresponding size in internal memory, finally described metadata is stored in described division
Region in.
Embodiment two:
Fig. 2 shows the flow process without caching CDRW method that the embodiment of the present invention provides, for the ease of saying
Bright illustrate only the part relevant to the embodiment of the present invention.
Step S201, file will be burned to read in internal memory.
Step S202, when receiving file and updating instruction, new file is read in and replaces corresponding treating more in internal memory
New file.
Step S203, it is loaded into internal memory is burned to file in CD burning driver, is directly burnt to light
Dish data field.
Step S204, in internal memory, generate the metadata of each imprinting file.
Step S205, after imprinting completes, from internal memory, obtain the unit that all files of imprinting are corresponding in CD
Data also write the meta-data region of CD.
Step S206, by CD metadata mirror image write CD MIRROR SITE.
The present embodiment is increments step S202 and S206 on the basis of embodiment one.
In step S202, read in file processes in internal memory, if having received file to update instruction, i.e.
Need renewal to be burned to file, now update instruction correspondence by new file write internal memory replaces described file
File to be updated.
In the present embodiment, the process of CD write, for first to write data field, then writes meta-data region, usual light
Dish also includes MIRROR SITE, is used for backing up metadata, be normally at CD decline, as shown in Figure 3.
In step S206, when determining that CD will not be changed again, whole metadata can be write including adding
Part, the MIRROR SITE of write CD.
Embodiment three:
Fig. 4 shows the block diagram without caching disc recording apparatus that the embodiment of the present invention provides, in order to
It is easy to illustrate to illustrate only the part relevant to the embodiment of the present invention.
What the present embodiment provided includes without caching disc recording apparatus:
File reads in unit 41, reads in internal memory for being burned to file；
File imprinting unit 42, for being loaded into being burned to file in internal memory in CD burning driver, directly
Connect and be burnt to data of optical disk district；
Metadata signal generating unit 43, for generating the metadata of each imprinting file in internal memory；
Metadata writing unit 44, for after imprinting completes, obtains all imprintings in CD from internal memory
Metadata that file is corresponding also writes the meta-data region of CD.
Each functional unit correspondence that the present embodiment provides achieves step S101-S104 in embodiment one.
As a kind of preferred implementation, in the present embodiment, CD burning driver has multiple, it is possible to achieve
File in parallel imprinting.Concrete, described file imprinting unit 42 includes:
File distribution module, for strategically, distributes to multiple CD carve the file that is burned in internal memory
Record driver；
File imprinting module, is loaded into each CD burning driver, directly for being burned to file correspondence
It is burnt to data of optical disk district parallel.
In internal memory, the method for the metadata of stored CD file can use centralised allocation method, it is also possible to
Use demand assigned method.
For centralised allocation method, described metadata signal generating unit 43 specifically includes:
Fixed area divides module, for distributing fixed size region in internal memory；
Generate and preserve module, for when CD burning driver imprinting file, generate described imprinting file pair
Answer metadata and be stored in described region.
In this method of salary distribution, the region for each CD one fixed size of distribution is used for depositing optical file pair
The metadata answered, when imprinting, generates metadata corresponding to imprinting file and is stored in corresponding region.
For allocation method based on demand, described metadata signal generating unit 43 specifically includes:
Metadata generation module, for when CD burning driver imprinting file, generates described imprinting file
Corresponding element data；
Computation partition module, is used for calculating described metadata size, and divides corresponding size area in internal memory；
Metadata memory module, for being stored in described metadata in described region.
In this method of salary distribution, when imprinting file, first generate the metadata that imprinting file is corresponding, then basis
Metadata size divides the region of corresponding size in internal memory, finally described metadata is stored in described division
Region in.
Embodiment four:
Fig. 5 shows the block diagram without caching disc recording apparatus that the embodiment of the present invention provides, in order to
It is easy to illustrate to illustrate only the part relevant to the embodiment of the present invention.
What the present embodiment provided includes without caching disc recording apparatus:
File reads in unit 51, reads in internal memory for being burned to file；
File updating block 52, for when receiving file and updating instruction, reads in new file in internal memory and replaces
Corresponding file to be updated；
File imprinting unit 53, for being loaded into being burned to file in internal memory in CD burning driver, directly
Connect and be burnt to data of optical disk district；
Metadata signal generating unit 54, for generating the metadata of each imprinting file in internal memory；
Metadata writing unit 55, for after imprinting completes, obtains all imprintings in CD from internal memory
Metadata that file is corresponding also writes the meta-data region of CD；
Mirror image processing unit 56, for by the MIRROR SITE of metadata mirror image write CD in CD.
The present embodiment adds updating block 52 and mirror image processing unit 56 on the basis of embodiment three, when
When needing to update file, file updating block 52, reads in the literary composition to be updated replacing correspondence in internal memory by new file
Part.Finally after CD write metadata, when determining that CD content no longer changes, mirror image processing unit 56
By the MIRROR SITE of metadata mirror image write CD in CD.
To sum up, the invention provides a kind of nothing caching imprinting technical scheme, extra caching can not be used,
Decrease intermediate steps, improve reliability；Intermediate link is made owing to decreasing unnecessary image file,
Decrease the overall writing time of CD；Additionally preferred, owing to can carve parallel between CD burning driver
Record, improves the speed that system is run.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (8)
1. a nothing caching CDRW method, it is characterised in that described method includes:
File will be burned to read in internal memory；
It is loaded into internal memory is burned to file in CD burning driver, is directly burnt to data of optical disk district；
The metadata of each imprinting file is generated in internal memory；
After imprinting completes, from internal memory, obtain all files of imprinting are corresponding in CD metadata and write
The meta-data region of CD；
The metadata mode wherein generating each imprinting file in internal memory can use centralised allocation side
Formula, it would however also be possible to employ distribution according to need mode；
For centralised allocation mode, the described metadata step generating each imprinting file in internal memory,
Specifically include: in internal memory, distribute fixed size region；When CD burning driver imprinting file, generate
Described imprinting file corresponding element data are also stored in described fixed size region；
For distribution according to need mode, the described metadata step generating each imprinting file in internal memory, tool
Body includes: when CD burning driver imprinting file, generates described imprinting file corresponding element data；Calculate
Described metadata size, and in internal memory, divide corresponding size area；It is described right described metadata to be stored in
Answer in size area.
2. method as claimed in claim 1, it is characterised in that described method also includes:
By the MIRROR SITE of metadata mirror image write CD in CD.
3. method as claimed in claim 1 or 2, it is characterised in that the described file that will be burned to reads in internal memory
After middle step, also include:
When receiving file and updating instruction, new file is read in the file to be updated replacing correspondence in internal memory.
4. as claimed in claim 3 method, it is characterised in that described be loaded into being burned to file in internal memory
In CD burning driver, directly it is burnt to data of optical disk district step, specifically includes:
Strategically, the file that is burned in internal memory is distributed to multiple CD burning driver；
File correspondence will be burned to and be loaded into each CD burning driver, be burnt to data of optical disk the most parallel
District.
5. a nothing caching disc recording apparatus, it is characterised in that described device includes:
File reads in unit, reads in internal memory for being burned to file；
File imprinting unit, for being loaded into being burned to file in internal memory in CD burning driver, directly
It is burnt to data of optical disk district；
Metadata signal generating unit, for generating the metadata of each imprinting file in internal memory；
Metadata writing unit, for after imprinting completes, obtains all imprintings literary composition in CD from internal memory
Metadata that part is corresponding also writes the meta-data region of CD；
Wherein said metadata signal generating unit can be to use centralised allocation mode, it would however also be possible to employ distribution according to need
Mode realizes；
For centralised allocation mode, described metadata signal generating unit specifically includes: fixed area divides module,
For distributing fixed size region in internal memory；Generate and preserve module, in CD burning driver imprinting
During file, generate described imprinting file corresponding element data and be stored in described fixed size region；
For distribution according to need mode, described metadata signal generating unit specifically includes: metadata generation module, uses
When at CD burning driver imprinting file, generate described imprinting file corresponding element data；Computation partition mould
Block, is used for calculating described metadata size, and divides corresponding size area in internal memory；Metadata storage mould
Block, for being stored in described metadata in described corresponding size area.
6. device as claimed in claim 5, it is characterised in that described device also includes:
Mirror image processing unit, for by the MIRROR SITE of metadata mirror image write CD in CD.
7. device as described in claim 5 or 6, it is characterised in that described device also includes:
File updating block, for when receiving file and updating instruction, right by new file reading internal memory is replaced
The file to be updated answered.
8. device as claimed in claim 7, it is characterised in that described file imprinting unit includes:
File distribution module, for strategically, distributes to multiple CD carve the file that is burned in internal memory
Record driver；
File imprinting module, is loaded into each CD burning driver, directly for being burned to file correspondence
It is burnt to data of optical disk district parallel.
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| CN201410342841.0A CN104123952B (en) | 2014-07-18 | 2014-07-18 | Cache-free disc burning method and device |
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| CN201410342841.0A CN104123952B (en) | 2014-07-18 | 2014-07-18 | Cache-free disc burning method and device |
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| CN104123952B true CN104123952B (en) | 2017-01-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106202414B (en) * | 2016-07-12 | 2019-11-22 | 武汉光忆科技有限公司 | A kind of file system and file memory method and system based on huge capacity compact discs library |
| CN112530467B (en) * | 2019-10-08 | 2024-03-12 | 北京中科开迪软件有限公司 | Method and system for additionally burning optical disk storage |
| CN112053707B (en) * | 2020-09-10 | 2021-12-17 | 浙江大华技术股份有限公司 | Recording method and device for multimedia equipment, storage medium and electronic device |
| CN112667163A (en) * | 2020-12-29 | 2021-04-16 | 武汉创视奇科技有限公司 | Optical storage data management method, system and equipment |
| CN113823331B (en) * | 2021-10-12 | 2023-02-28 | 成都统信软件技术有限公司 | Optical disc additional recording method and device and computing equipment |
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| JP2003061029A (en) * | 2001-08-10 | 2003-02-28 | Canon Inc | Image processor, image processing method, recording medium, program and image processing system |
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| CN2517075Y (en) * | 2001-12-28 | 2002-10-16 | 德泰科技股份有限公司 | Cd-rw |
| CN102200890A (en) * | 2010-03-26 | 2011-09-28 | 创惟科技股份有限公司 | Storage device for generating virtual disk-recording driver and method thereof |
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