CN112068773A - Method and device for recording file to optical disk - Google Patents
Method and device for recording file to optical disk Download PDFInfo
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- CN112068773A CN112068773A CN202010845069.XA CN202010845069A CN112068773A CN 112068773 A CN112068773 A CN 112068773A CN 202010845069 A CN202010845069 A CN 202010845069A CN 112068773 A CN112068773 A CN 112068773A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0608—Saving storage space on storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/172—Caching, prefetching or hoarding of files
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
- G06F3/0623—Securing storage systems in relation to content
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0643—Management of files
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0674—Disk device
- G06F3/0677—Optical disk device, e.g. CD-ROM, DVD
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
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- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Bioethics (AREA)
- General Health & Medical Sciences (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- Health & Medical Sciences (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The invention discloses a method for recording a file to an optical disc, which comprises the following steps: judging whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded; if yes, further judging whether the target file is suitable for average recording to the target optical disc according to the target file capacity, the target optical disc capacity and the target optical disc number corresponding to all the target optical discs; if yes, the target file is averagely cut into a plurality of target subfiles, and after preset processing, the target subfiles are respectively recorded to the corresponding target optical discs. The invention can record the file with the capacity larger than that of the optical disk on the optical disk and can greatly utilize the storage space of the optical disk.
Description
Technical Field
The present invention relates to the field of optical disc recording application technology, and in particular, to a method and apparatus for recording a file onto an optical disc.
Background
At present, the general data archiving storage media include magnetic disks, magnetic tapes and optical disks, and it is now very common to write files on optical disks. In a practical environment, more and more important data needs to be preserved for a long time, and only optical disc storage has the characteristics of long-term preservation and low maintenance cost because the optical disc can reliably preserve files for more than 30 years. Although the writing performance of the optical disc is poor and the number of writing times is small, it happens to conform to the characteristics of more reading and less writing of cold data. Therefore, more and more enterprises select the optical disc library as the storage medium based on the characteristics of the optical disc, such as high safety, strong reliability, long service life, low cost, and the like. Usually, a plurality of files are recorded in a plurality of optical discs, the capacity of each file is often different, and the total capacity of the files recorded in each optical disc may also be different. In the prior art, because the sizes of the files are different, it is usually difficult to fully write the storage space of each optical disc, which results in low utilization rate of the storage space of some optical discs, waste of the used space of the optical discs, and unnecessary loss. Some files have very large capacity, and the storage space of one optical disc cannot meet the recording requirement of the files.
Disclosure of Invention
The embodiment of the invention provides a method and a device for recording a file to an optical disc, which aim to solve the following problems in the prior art: when the capacity of the recorded file is large, the file cannot be recorded on the optical disc and the utilization rate of the storage space of the optical disc cannot be increased.
In order to solve the above technical problem, a first technical solution adopted in the embodiments of the present invention is as follows:
a method of inscribing a file to an optical disc, comprising: judging whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded; if yes, further judging whether the target file is suitable for average recording to the target optical disc according to the target file capacity, the target optical disc capacity and the target optical disc number corresponding to all the target optical discs; if yes, the target file is averagely cut into a plurality of target subfiles, and after preset processing, the target subfiles are respectively recorded to the corresponding target optical discs.
Optionally, the determining whether the target file is suitable for being equally recorded onto the target disc further according to the target file capacity, the target disc capacity, and the number of target discs corresponding to all the target discs includes: judging whether the average recorded file capacity of each target optical disk exceeds a preset optical disk recording threshold value or not according to the number of the target optical disks and the target file capacity; if yes, the target file is judged to be suitable for being evenly recorded on the target optical disc.
Optionally, if the average file capacity recorded on each target optical disc does not exceed a preset optical disc recording threshold, the method includes: and cutting the target file into a plurality of target subfiles, wherein the file capacity corresponding to at most one target subfile in all the target subfiles is different from the target optical disc capacity.
Optionally, the determining whether the target file capacity of the target file to be recorded is greater than the target disc capacity corresponding to each target disc to be recorded includes: and if the target file capacity of the target file to be recorded is less than or equal to the target optical disk capacity corresponding to each target optical disk to be recorded, directly recording the target file into one target optical disk.
Optionally, the cutting the target file into a plurality of target subfiles, and a file capacity corresponding to at most only one of the target subfiles is different from the target disc capacity in all the target subfiles, and then includes: and encrypting each target subfile, wherein each target subfile corresponding to the same target file has the same encryption password.
Optionally, the averagely cutting the target file into a plurality of target subfiles and performing preset processing includes: and averagely cutting the target file into a plurality of target subfiles, and encrypting each target subfile to ensure that the encryption password of each target subfile corresponding to each target file is the same.
Optionally, the averagely cutting the target file into a plurality of target subfiles and recording the target subfiles to the corresponding target optical discs after performing preset processing, and then the method includes: and generating a target capacity identifier on each target optical disc, wherein the target capacity identifier is used for indicating the file capacity corresponding to the target file recorded on the target optical disc.
In order to solve the above technical problem, a second technical solution adopted in the embodiments of the present invention is as follows:
an apparatus for inscribing a file to an optical disc, comprising: the first judging module is used for judging whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded; a second judging module, configured to, when a target file capacity of a target file to be written is greater than a target optical disc capacity corresponding to each target optical disc to be subjected to writing, further judge, according to the target file capacity, the target optical disc capacity, and a number of target optical discs corresponding to all the target optical discs, whether the target file is suitable for being written on the target optical disc on average; and the file recording module is used for averagely cutting the target file into a plurality of target subfiles and recording the target file to each corresponding target optical disc after preset processing when the target file is suitable for averagely recording the target file to the target optical disc.
In order to solve the above technical problem, a third technical solution adopted in the embodiments of the present invention is as follows:
a computer-readable storage medium having stored thereon a computer program which, when executed, implements a method of inscribing a file to an optical disc as described above.
In order to solve the above technical problem, a fourth technical solution adopted in the embodiments of the present invention is as follows:
a computer device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the method of burning a file to an optical disc as described above when executing the computer program.
The embodiment of the invention has the beneficial effects that: different from the situation in the prior art, the embodiment of the present invention determines whether the target file capacity of the target file to be recorded is greater than the target disc capacity corresponding to each target disc to be recorded, and if so, further determines whether the target file is suitable for being recorded on the target disc on average according to the target file capacity, the target disc capacity, and the number of target discs corresponding to all target discs, and if so, equally divides the target file into a plurality of target subfiles and records the target subfiles on the corresponding target discs after performing the predetermined processing.
Drawings
FIG. 1 is a flowchart illustrating an embodiment of a method for recording a file onto an optical disc according to a first embodiment of the present invention;
FIG. 2 is a partial structural frame diagram of an embodiment of an apparatus for recording a file onto an optical disc according to a second embodiment of the present invention;
FIG. 3 is a partial structural framework diagram of an embodiment of a computer-readable storage medium according to a third embodiment of the present invention;
fig. 4 is a partial structural framework diagram of an embodiment of a computer device according to a fourth embodiment of the present invention.
Detailed Description
Example one
Referring to fig. 1, fig. 1 is a flowchart illustrating an implementation of a method for recording a file onto an optical disc according to an embodiment of the present invention, which can be obtained by combining fig. 1, and the method for recording a file onto an optical disc according to the present invention includes the following steps:
step S101: and judging whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded. In this step, if the capacity of the target file to be recorded is too large, a target disc cannot accommodate the target file, the content of the target file must be divided, and then the divided target file is recorded into the target disc.
Step S102: if the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded, whether the target file is suitable for being recorded on the target optical disc on average is further judged according to the target file capacity, the target optical disc capacity and the number of target optical discs corresponding to all the target optical discs. In this step, the target file can be recorded on the target disc on average, or the target file can be recorded on the target disc randomly or in a planned manner, with the maximum recording capacity of the target disc.
Step S103: and if the target file is suitable for being averagely recorded to the target optical disc, averagely cutting the target file into a plurality of target subfiles, and respectively recording the target subfiles to the corresponding target optical discs after preset processing.
In this embodiment, optionally, the determining whether it is suitable to averagely write the target file to the target optical disc further according to the target file capacity, the target optical disc capacity, and the number of target optical discs corresponding to all the target optical discs includes:
firstly, judging whether the average file capacity recorded by each target optical disk exceeds a preset optical disk recording threshold value according to the number of the target optical disks and the target file capacity. The preset optical disc recording threshold is an empirical value, which means that the capacity of the file recorded on the optical disc cannot be too small, and the space of the optical disc is wasted.
Secondly, if the average file capacity recorded by each target optical disc exceeds a preset optical disc recording threshold, the target file is judged to be suitable for being recorded on the target optical disc averagely.
In this embodiment, optionally, if the average file capacity recorded on each target optical disc does not exceed the preset optical disc recording threshold, the method includes:
the target file is cut into a plurality of target subfiles, and the file capacity corresponding to at most one target subfile in all the target subfiles is different from the capacity of the target optical disc, that is, except one target optical disc which is not fully recorded, other target optical discs are fully recorded, so that the storage space of the optical disc can be maximally utilized.
In this embodiment, optionally, the determining whether the target file capacity of the target file to be recorded is greater than the target disc capacity corresponding to each target disc to be recorded includes:
and if the target file capacity of the target file to be recorded is less than or equal to the target optical disk capacity corresponding to each target optical disk to be recorded, directly recording the target file into one target optical disk. Because the capacity of the target file does not exceed the capacity of the target optical disc, the target file does not need to be cut, and the utilization of the storage space of the target optical disc is not influenced.
In this embodiment, optionally, the cutting the target file into a plurality of target subfiles, and a file capacity corresponding to at most one of the target subfiles is different from the target disc capacity in all of the target subfiles, then includes:
and encrypting each target subfile, wherein each target subfile corresponding to the same target file has the same encryption password. Because the security and stability of the file recorded on the optical disc can be interfered and damaged by various factors, great file loss is caused, and the security and stability of the file recorded on the optical disc can be ensured by encrypting the target subfile.
In this embodiment, optionally, the averagely cutting the target file into a plurality of target subfiles and performing preset processing includes:
and averagely cutting the target file into a plurality of target subfiles, and encrypting each target subfile to ensure that the encryption passwords of each target subfile corresponding to each target file are the same, so that the content of the file is not confused.
In this embodiment, optionally, after the target file is averagely divided into a plurality of target subfiles and preset, the target subfiles are respectively recorded to corresponding target optical discs, and then the method includes:
and generating a target capacity identifier on each target optical disc, wherein the target capacity identifier is used for indicating the file capacity corresponding to the target file recorded on the target optical disc.
The embodiment of the invention judges whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded, if so, further judges whether the target file is suitable for being recorded on the target optical disc on average according to the target file capacity, the target optical disc capacity and the number of the target optical discs corresponding to all the target optical discs, and if so, the target file is cut into a plurality of target subfiles on average and is recorded on each corresponding target optical disc respectively after preset processing. In addition, the invention carries out encryption processing on the target (sub) file, and can ensure the safety and stability of the file recorded on the optical disk.
Example two
Referring to fig. 2, fig. 2 is a partial structural frame diagram of an apparatus for recording a file onto an optical disc according to an embodiment of the present invention, which can be obtained by combining fig. 2, and an apparatus 100 for recording a file onto an optical disc according to the present invention includes:
the first determining module 110 is configured to determine whether a target file capacity of a target file to be recorded is greater than a target disc capacity corresponding to each target disc to be recorded.
A second determining module 120, configured to determine whether it is suitable to averagely write the target file to the target optical disc according to the target file capacity, the target optical disc capacity, and the number of target optical discs corresponding to all target optical discs, when the target file capacity of the target file to be written is greater than the target optical disc capacity corresponding to each target optical disc to be written.
The file recording module 130 is configured to, when the target file is suitable for being recorded on the target optical disc on average, averagely cut the target file into a plurality of target subfiles, perform a preset process, and then record the target subfiles on the corresponding target optical discs respectively.
The embodiment of the invention judges whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded, if so, further judges whether the target file is suitable for being recorded on the target optical disc on average according to the target file capacity, the target optical disc capacity and the number of the target optical discs corresponding to all the target optical discs, and if so, the target file is cut into a plurality of target subfiles on average and is recorded on each corresponding target optical disc respectively after preset processing.
EXAMPLE III
Referring to fig. 3, a computer-readable storage medium 10 according to an embodiment of the present invention can be seen, where the computer-readable storage medium 10 includes: ROM/RAM, magnetic disks, optical disks, etc., on which a computer program 11 is stored, which computer program 11, when executed, implements a method of burning files onto an optical disk as described in embodiment one. Since the method for recording the file onto the optical disc has been described in detail in the first embodiment, the description is not repeated here.
The method for writing a file to an optical disc according to the embodiment of the present invention determines whether the target file capacity of a target file to be written is greater than the target disc capacity corresponding to each target disc to be written, and if so, further determines whether the target file is suitable for being written to the target disc on average according to the target file capacity, the target disc capacity, and the number of target discs corresponding to all target discs, and if so, equally cuts the target file into a plurality of target subfiles and writes the target subfiles to the corresponding target discs respectively after performing a predetermined process.
Example four
Referring to fig. 4, a computer apparatus 20 according to an embodiment of the present invention includes a processor 21, a memory 22, and a computer program 221 stored in the memory 22 and executable on the processor 21, where the processor 21 executes the computer program 221 to implement a method for recording a file onto an optical disc according to an embodiment. Since the method for recording the file onto the optical disc has been described in detail in the first embodiment, the description is not repeated here.
The method for writing a file to an optical disc according to the embodiment of the present invention determines whether the target file capacity of a target file to be written is greater than the target disc capacity corresponding to each target disc to be written, and if so, further determines whether the target file is suitable for being written to the target disc on average according to the target file capacity, the target disc capacity, and the number of target discs corresponding to all target discs, and if so, equally cuts the target file into a plurality of target subfiles and writes the target subfiles to the corresponding target discs respectively after performing a predetermined process.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method of recording a file onto an optical disc, comprising:
judging whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded;
if yes, further judging whether the target file is suitable for average recording to the target optical disc according to the target file capacity, the target optical disc capacity and the target optical disc number corresponding to all the target optical discs;
if yes, the target file is averagely cut into a plurality of target subfiles, and after preset processing, the target subfiles are respectively recorded to the corresponding target optical discs.
2. A method for burning files onto an optical disc as claimed in claim 1, wherein said further determining whether it is suitable to equally burn the target files onto the target optical disc according to the target file capacity, the target optical disc capacity and the number of target optical discs corresponding to all the target optical discs comprises:
judging whether the average recorded file capacity of each target optical disk exceeds a preset optical disk recording threshold value or not according to the number of the target optical disks and the target file capacity;
if yes, the target file is judged to be suitable for being evenly recorded on the target optical disc.
3. The method of claim 2, wherein if the average recorded file capacity of each target disc does not exceed a predetermined disc recording threshold, the method further comprises:
and cutting the target file into a plurality of target subfiles, wherein the file capacity corresponding to at most one target subfile in all the target subfiles is different from the target optical disc capacity.
4. A method for burning a file onto an optical disc as claimed in claim 1, wherein said determining whether the target file capacity of the target file to be burned is larger than the target disc capacity corresponding to each target disc to be burned comprises:
and if the target file capacity of the target file to be recorded is less than or equal to the target optical disk capacity corresponding to each target optical disk to be recorded, directly recording the target file into one target optical disk.
5. A method of burning a file onto an optical disc as claimed in claim 3, wherein the cutting the target file into a plurality of target subfiles, and at most only one of the target subfiles in all of the target subfiles has a file size different from the target disc size, comprises:
and encrypting each target subfile, wherein each target subfile corresponding to the same target file has the same encryption password.
6. A method for burning a file onto an optical disc as claimed in claim 1, wherein the dividing the target file into a plurality of target subfiles and performing the predetermined process comprises:
and averagely cutting the target file into a plurality of target subfiles, and encrypting each target subfile to ensure that the encryption password of each target subfile corresponding to each target file is the same.
7. A method for burning a file onto an optical disc as claimed in claim 1, wherein the cutting the target file into a plurality of target subfiles and burning the target subfiles onto the corresponding target optical discs after the predetermined processing, comprises:
and generating a target capacity identifier on each target optical disc, wherein the target capacity identifier is used for indicating the file capacity corresponding to the target file recorded on the target optical disc.
8. An apparatus for recording a file onto an optical disc, comprising:
the first judging module is used for judging whether the target file capacity of the target file to be recorded is larger than the target optical disc capacity corresponding to each target optical disc to be recorded;
a second judging module, configured to, when a target file capacity of a target file to be written is greater than a target optical disc capacity corresponding to each target optical disc to be subjected to writing, further judge, according to the target file capacity, the target optical disc capacity, and a number of target optical discs corresponding to all the target optical discs, whether the target file is suitable for being written on the target optical disc on average;
and the file recording module is used for averagely cutting the target file into a plurality of target subfiles and recording the target file to each corresponding target optical disc after preset processing when the target file is suitable for averagely recording the target file to the target optical disc.
9. A computer-readable storage medium having stored thereon a computer program which, when executed, implements the method of burning a file to an optical disc of any of claims 1 to 7.
10. Computer apparatus comprising a processor, a memory and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of burning a file onto an optical disc according to any one of claims 1 to 7 when executing the computer program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845069.XA CN112068773A (en) | 2020-08-20 | 2020-08-20 | Method and device for recording file to optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845069.XA CN112068773A (en) | 2020-08-20 | 2020-08-20 | Method and device for recording file to optical disk |
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| Publication Number | Publication Date |
|---|---|
| CN112068773A true CN112068773A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010845069.XA Withdrawn CN112068773A (en) | 2020-08-20 | 2020-08-20 | Method and device for recording file to optical disk |
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| CN (1) | CN112068773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898780A (en) * | 2022-04-18 | 2022-08-12 | 大连金华录数码科技有限公司 | Device capable of storing multiple optical disks |
-
2020
- 2020-08-20 CN CN202010845069.XA patent/CN112068773A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898780A (en) * | 2022-04-18 | 2022-08-12 | 大连金华录数码科技有限公司 | Device capable of storing multiple optical disks |
| CN114898780B (en) * | 2022-04-18 | 2024-03-26 | 大连金华录数码科技有限公司 | Device capable of storing multiple optical discs |
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Application publication date: 20201211 |