CN103699587A - Dynamic compression method and dynamic compression device for files - Google Patents
Dynamic compression method and dynamic compression device for files Download PDFInfo
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- CN103699587A CN103699587A CN201310656694.XA CN201310656694A CN103699587A CN 103699587 A CN103699587 A CN 103699587A CN 201310656694 A CN201310656694 A CN 201310656694A CN 103699587 A CN103699587 A CN 103699587A
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- 230000006835 compression Effects 0.000 title claims abstract description 118
- 238000007906 compression Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004513 sizing Methods 0.000 claims description 38
- 239000000284 extract Substances 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 14
- 230000007774 longterm Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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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
- G06F16/17—Details of further file system functions
- G06F16/174—Redundancy elimination performed by the file system
- G06F16/1744—Redundancy elimination performed by the file system using compression, e.g. sparse files
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Abstract
The invention discloses a dynamic compression method for files. The dynamic compression method for the files comprises the following steps: extracting a part with a predetermined size from a to-be-compressed file; compressing the extracted part with the predetermined size; judging whether compression ratio after compression is finished reaches predetermined compression ratio or not; if yes, compressing the file, and otherwise, not compressing the file. Moreover, the invention also provides a dynamic compression device for the files. By utilizing the dynamic compression method and the dynamic compression device for the files disclosed by the invention, dynamic compression of the files can be realized; the files can be selectively compressed; the files which do not need to be compressed can be directly transmitted, and therefore, the occupation of CPU (central processing unit) resources can be reduced.
Description
Technical field
The present invention relates to cyber-net field, relate in particular to file Dynamic Compression and device.
Background technology
In computing machine and communication facilities universal today, file transfer has been quotidian thing.Conventionally, before file is transmitted, when file is very large, in order to reduce the transmission time, whole file all can be compressed, this takies very large cpu resource.And the file of some type, as picture, video etc., also can not change file size how much even if compress, but having taken very large cpu resource simultaneously, so, when running into picture picture, the such file of video, can select not carry out compressing.But, for a file, whether to compress, sometimes, by checking that its suffix name or file layout judge, but can not enumerate all file layouts.The kind of file layout is more and more, for and uncommon file layout, whether basic None-identified can be compressed.
Summary of the invention
In view of the above problems, the present invention has been proposed to a kind of file Dynamic Compression and device that overcomes the problems referred to above or address the above problem is at least in part provided.
According to one aspect of the present invention, a kind of file Dynamic Compression is provided, comprising: the part of extracting pre-sizing from the file that will compress; Part to extracted pre-sizing is compressed; Whether the compression factor after judgement has been compressed reaches predetermined compression factor; If so, this document is compressed, otherwise this document is not compressed.
Alternatively, according to file Dynamic Compression of the present invention, before the step of the part of the pre-sizing extracting the file from compressing, also comprise: judgement wants the file layout of compressed file whether to be arranged in blacklist, and wherein said blacklist stores the file layout that does not need compression.The file layout of wanting compressed file when judgement not in blacklist time, is carried out and from the file that will compress, is extracted the step of the part of pre-sizing; The file layout of wanting compressed file when judgement in blacklist time, is not compressed this document.
According to a further aspect in the invention, provide a kind of file dynamic press device, comprising: extraction module, it is suitable for extracting the file from compressing the part of pre-sizing; Compression module, its part that is suitable for pre-sizing that described extraction module is extracted is compressed; And compression identification module, it judges whether the compression factor after described compression module has compressed reaches predetermined compression factor.Wherein, when the compression factor after the judgement of described compression identification module has been compressed reaches predetermined compression factor, described compression module compresses this document; When the compression factor after the judgement of described compression identification module has been compressed does not reach predetermined compression factor, described compression module no longer compresses this document.
Alternatively, file dynamic press device according to the present invention also comprises: memory module, and it is suitable for storing blacklist, deposits the file layout that does not need compression in this blacklist; Judge module, it is suitable for judgement and wants the file layout of compressed file whether to be arranged in blacklist.Wherein, the file layout of wanting compressed file when the judgement of described judge module is not in blacklist time, described extraction module extracts the part of pre-sizing from the file that will compress, and the part of the pre-sizing that then described compression module extracts described extraction module is compressed; The file layout of wanting compressed file when the judgement of described judge module is in blacklist time, and described compression module does not compress this document.
Utilize the present invention, can realize the dynamic compression to file, can to file, compress selectively, to the file that does not need to compress, can directly transmit, thereby can reduce taking cpu resource.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by the specific embodiment of the present invention.
Accompanying drawing explanation
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing is only for the object of preferred implementation is shown, and do not think limitation of the present invention.And in whole accompanying drawing, by identical reference symbol, represent identical parts.In the accompanying drawings:
Fig. 1 shows the process flow diagram of file Dynamic Compression according to an embodiment of the invention;
Fig. 2 shows the block scheme of file dynamic press device according to an embodiment of the invention.
Embodiment
Exemplary embodiment of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown exemplary embodiment of the present disclosure in accompanying drawing, yet should be appreciated that and can realize the disclosure and the embodiment that should do not set forth limits here with various forms.On the contrary, it is in order more thoroughly to understand the disclosure that these embodiment are provided, and can by the scope of the present disclosure complete convey to those skilled in the art.
The present invention is mainly used in the compression of the file to being transmitted, in daily life and work, often file need to be transmitted between two equipment in network, for example from local client, upload onto the server, or from local client, be sent to another long-range client, or be sent to another server or be downloaded to client etc. from server from a server.Especially, the jumbo cloud storage that cloud server provides users with the convenient and uses recently, as long as the file that user uses needs is uploaded to its oneself cloud storage, just can from cloud storage, download required file in different places, and without carrying the memory devices such as portable hard drive, USB flash disk, can not worry can not obtain in time because memory device damages or leaves behind the appearance of the problem of own required file.
In order to facilitate user's transfer files, save the time of file transfer, the present invention proposes a kind of Dynamic Compression and device.
Fig. 1 shows according to the process flow diagram of the file Dynamic Compression of one embodiment of the present invention.As shown in Figure 1, method 100 of the present invention can start from step S130, at step S130, extracts the part of pre-sizing from want compressed file.The part of described pre-sizing can be the part of the 512KB size that extracts from want compressed file, and the concrete numerical value of described pre-sizing can according to circumstances be determined, as long as can show compression factor, for example, gets the part of 512KB size.In addition, the part of described pre-sizing, can also can partly start continuous drawing forward from least significant end from wanting the beginning of compressed file to start continuous drawing backward, can also extract from center section.
Next, at step S150, the part of extracted pre-sizing is compressed, file is carried out to precompression.Here the tool of compression that adopted can be the instruments such as WINRAR, WINZIP.
Next, at step S170, whether the compression factor after judgement has been compressed reaches predetermined compression factor, if so, performs step S190, and this document is compressed; If not, perform step S160, this document is not compressed.At step S190, when the part of the pre-sizing of this document is from the situation that starts most to extract of this document, can on precompressed basis, to this document, proceed compression before, and need not start anew again to compress whole file; If the part of the pre-sizing of this document is from the center section of this document or from last situation about extracting forward, whole file is started anew to compress, hence one can see that, when extracting the pre-sizing of this document, preferably from file start most extract.When the compression factor of the part of judgement this document pre-sizing does not reach predetermined compression factor, no longer this document is compressed, this document can directly be transmitted.
Here, described predetermined compression factor can be set according to demand, generally wants compression factor more than 15% being just worth compression, certainly, also can Ding get Gao a little, and for example 30%.
In addition, alternatively, before step S130, can also comprise step S110, at step S110, judgement wants the file layout of compressed file whether to be arranged in blacklist, and the file layout of wanting compressed file when judgement is not in blacklist time, execution step S130, the file layout of wanting compressed file when judgement is in blacklist time, and execution step S160, does not compress this document.Wherein, deposited and do not need compressed file layout in described blacklist, for example expansion is called jpg, zip, rar, pdf, wma, rmvb, rm, flash, the file layout of mp4 etc., the file of these file layouts or cannot compress, even or compressed, compression effectiveness is also little.
By using blacklist, before the precompression of execution step S130, can judge in advance that whether this document is compressed, compressed if the file layout of this document in blacklist, judges that this document does not need, directly carry out file transfer; If the file layout of this document is not in blacklist, illustrate that this document form is unknown file layout, uncertain whether obvious to the effect of its compression, can perform step S130 for this reason, tentatively it is compressed, then judge whether to compress it by step S170.
Here, blacklist can be temporary file, and the file that only will compress this batch is effective, does not need long-term preservation, and at this moment, blacklist is stored in internal memory.For example, while having large quantities of .cad files to want compressed rear transmission, if program is found the discontented foot expection of first .cad compressing file ratio, so just .cad is added in blacklist list, while transmitting again next .cad file later, just can not detect whether need compressed.In addition, blacklist can be also permanent file, at this moment, it can be recorded as configuration file in the machine, comprises a file extent list of file names in this configuration file, such as comprising .saz .png etc., before to compressing file, first confirm whether it is present in blacklist.
In addition, alternatively, at step S170, when the compression factor of judgement after having compressed do not reach predetermined compression factor, can also carry out following steps: the file layout of this document is added in described blacklist.The blacklist is here the long-term file of preserving.Like this, can reduce the precompression to the file of some file layout types.Because the file layout in blacklist is not unknown file layout, the file with this file layout does not have much conventionally yet, so, conventionally do not need this file layout to add in blacklist, because if deposit too many file layout in blacklist, although can reduce, the file of some file layout types is carried out to follow-up precompression, but the time spent while judging in step S110 can increase, and while in fact file being carried out to precompression, because the file size of choosing is approximately 512KB left and right, it is very short to carry out precompression institute's time spent, in addition, add this class file fewer, so altogether this class file being carried out to time that precompression spends can be not too many yet, do not resemble the file with stored those file layouts in blacklist, quantity of documents may be larger, if carry out one by one precompression and judgement, the time of accumulation may be larger.
Said method of the present invention, is not only applicable to, by the file side that uploads onto the server, be applicable to from server side download file yet.In order to accelerate from the speed of server side download file, before downloading, can document size be compressed smallerly, and then transmit, before downloading, to the compression of file, just can adopt method of the present invention to compress.Certainly, method of the present invention, is not limited to for foregoing situation, and it can be widely used for the file transmitting between any two equipment that connect by network.
In addition, the present invention also provides a kind of file dynamic press device, as shown in Figure 2, comprising: extraction module 225, compression module 230 and compression identification module 240.
Wherein, extraction module 225 is suitable for extracting the file from compressing the part of pre-sizing.The part of described pre-sizing can be the part of the 512KB size that extracts from want compressed file, and the concrete numerical value of described pre-sizing can according to circumstances be determined, as long as can show compression factor, for example, gets the part of 512KB size.In addition, the part of described pre-sizing, can also can partly start continuous drawing forward from least significant end from wanting the beginning of compressed file to start continuous drawing backward, can also extract from center section.
Compression module 230 is suitable for the part of pre-sizing that extraction module 225 is extracted and compresses, and file is carried out to precompression.Here the tool of compression that adopted can be the instruments such as WINRAR, WINZIP.
Compression identification module 240 judges whether the compression factor after the pre-sizing Partial shrinkage of 230 pairs of extractions of compression module completes reaches predetermined compression factor.Wherein, when the compression factor after the pre-sizing Partial shrinkage of 230 pairs of extractions of compression identification module 240 judgement compression modules completes reaches predetermined compression factor, 230 pairs of this document of compression module compress, when the part of the pre-sizing of this document is from the situation that starts most to extract of this document, compression module 230 can proceeded compression to this document on precompressed basis before, and need not start anew to compress whole file again; If the part of the pre-sizing of this document is from the center section of this document or from last situation about extracting forward, compression module 230 need to start anew to compress to whole file, hence one can see that, when extracting the pre-sizing of this document, preferably from file start most extract.When the compression factor after compression identification module 240 judgement compression modules 230 have compressed does not reach predetermined compression factor, compression module 230 no longer compresses this document, and this document can directly be transmitted.Here, described predetermined compression factor can be set according to demand, generally wants compression factor more than 15% being just worth compression, certainly, also can Ding get Gao a little, and for example 30%.
In addition, device 200 of the present invention can also comprise memory module 210 and judge module 220.Wherein, memory module 210 is suitable for storing blacklist, deposits the file layout that does not need compression in this blacklist, for example expansion pdf by name, wma, rmvb, rm, flash, the file layout of mp4 etc., the file of these file layouts or cannot compress, even or compressed, compression effectiveness is also little.Judge module 220 is suitable for judgement and wants the file layout of compressed file whether to be arranged in blacklist.Wherein, the file layout of wanting compressed file when judge module 220 judgement is not in blacklist time, and extraction module 225 extracts the part of pre-sizing from the file that will compress, and then the part of 230 pairs of pre-sizings that extract of compression module is compressed.The file layout of wanting compressed file when judge module 220 judgement is in blacklist time, and compression module 230 does not compress this document.By using blacklist, before compression module 230 carries out precompression, judge module 220 can judge that whether this document is compressed in advance, if the file layout of this document is in blacklist, judge that this document does not need compressed, directly carry out file transfer; If the file layout of this document, not in blacklist, then is carried out precompression by compression module 230.Here, blacklist can be temporary file, and the file that only will compress this batch is effective, does not need long-term preservation, and at this moment, blacklist is stored in internal memory.For example, while having large quantities of .cad files to want compressed rear transmission, if program is found the discontented foot expection of first .cad compressing file ratio, so just .cad is added in blacklist list, while transmitting again next .cad file later, just can not detect whether need compressed.In addition, blacklist can be also permanent file, at this moment, it can be recorded as configuration file in the machine, comprises a file extent list of file names in this configuration file, such as comprising .saz .png etc., before to compressing file, first confirm whether it is present in blacklist.
In addition, alternatively, the file layout of the file that will compress in judge module 220 judgement is not in blacklist in the situation that, and when the compression factor after the judgement of compression identification module 240 completes the Partial shrinkage of extracted pre-sizing does not reach predetermined compression factor, compression identification module 240 wants the file layout of compressed file to add in described blacklist this.The blacklist is here the long-term file of preserving.Because the file layout in blacklist is not unknown file layout, the file with this file layout does not have much conventionally yet, so, conventionally do not need this file layout to add in blacklist, because if deposit too many file layout in blacklist, although can reduce, the file of some file layout types is carried out to follow-up precompression, but the time spent when judge module 220 judges can increase, and while in fact file being carried out to precompression, because the file size of choosing is approximately 512KB left and right, it is very short to carry out precompression institute's time spent, in addition, add this class file fewer, so altogether this class file being carried out to time that precompression spends can be not too many yet, do not resemble the file with stored those file layouts in blacklist, quantity of documents may be larger, if carry out one by one precompression and judgement, the time of accumulation may be larger.
Said apparatus of the present invention, is not only applicable to, by the file side that uploads onto the server, be applicable to from server side download file yet.When from server side download file, conventionally in order to accelerate speed of download, before downloading, preferably document size is compressed smallerly, and then transmit, and to the compression of file, just can adopt said apparatus of the present invention to compress before downloading.Certainly, device of the present invention, is not limited to for foregoing situation, and it can be widely used for the compression of the file that transmits between any two equipment that connect by network
By said method of the present invention and device, can realize the dynamic compression to file, can to file, compress selectively, to the file that does not need to compress, can directly transmit, thereby can reduce taking cpu resource.
The algorithm providing at this is intrinsic not relevant to any certain computer, virtual system or miscellaneous equipment with demonstration.Various general-purpose systems also can with based on using together with this teaching.According to description above, it is apparent constructing the desired structure of this type systematic.In addition, the present invention is not also for any certain programmed language.It should be understood that and can utilize various programming languages to realize content of the present invention described here, and the description of above language-specific being done is in order to disclose preferred forms of the present invention.
In the instructions that provided herein, a large amount of details have been described.Yet, can understand, embodiments of the invention can not put into practice in the situation that there is no these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Similarly, be to be understood that, in order to simplify the disclosure and to help to understand one or more in each inventive aspect, in the above in the description of exemplary embodiment of the present invention, each feature of the present invention is grouped together into single embodiment, figure or sometimes in its description.Yet, the method for the disclosure should be construed to the following intention of reflection: the present invention for required protection requires than the more feature of feature of clearly recording in each claim.Or rather, as reflected in claims below, inventive aspect is to be less than all features of disclosed single embodiment above.Therefore, claims of following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present invention.
Those skilled in the art are appreciated that and can the module in the equipment in embodiment are adaptively changed and they are arranged in one or more equipment different from this embodiment.Module in embodiment or unit or assembly can be combined into a module or unit or assembly, and can put them into a plurality of submodules or subelement or sub-component in addition.At least some in such feature and/or process or unit are mutually repelling, and can adopt any combination to combine all processes or the unit of disclosed all features in this instructions (comprising claim, summary and the accompanying drawing followed) and disclosed any method like this or equipment.Unless clearly statement in addition, in this instructions (comprising claim, summary and the accompanying drawing followed) disclosed each feature can be by providing identical, be equal to or the alternative features of similar object replaces.
In addition, those skilled in the art can understand, although embodiment more described herein comprise some feature rather than further feature included in other embodiment, the combination of the feature of different embodiment means within scope of the present invention and forms different embodiment.For example, in the following claims, the one of any of embodiment required for protection can be used with array mode arbitrarily.
All parts embodiment of the present invention can realize with hardware, or realizes with the software module moved on one or more processor, or realizes with their combination.It will be understood by those of skill in the art that and can use in practice microprocessor or digital signal processor (DSP) to realize the some or all functions according to the some or all parts in the browser client of the embodiment of the present invention.The present invention for example can also be embodied as, for carrying out part or all equipment or device program (, computer program and computer program) of method as described herein.Realizing program of the present invention and can be stored on computer-readable medium like this, or can there is the form of one or more signal.Such signal can be downloaded and obtain from internet website, or provides on carrier signal, or provides with any other form.
It should be noted above-described embodiment the present invention will be described rather than limit the invention, and those skilled in the art can design alternative embodiment in the situation that do not depart from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has a plurality of such elements.The present invention can be by means of including the hardware of some different elements and realizing by means of the computing machine of suitably programming.In having enumerated the unit claim of some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.
Claims (10)
1. a file Dynamic Compression, comprising:
From the file that will compress, extract the part of pre-sizing;
Part to extracted pre-sizing is compressed;
Whether the compression factor after judgement has been compressed reaches predetermined compression factor;
If so, this document is compressed, otherwise this document is not compressed.
2. method according to claim 1, also comprises before extracting the step of part of pre-sizing the file from compressing:
Whether the file layout of the file that judgement will be compressed is arranged in blacklist, and wherein said blacklist stores the file layout that does not need compression;
When the file layout of the judgement file that will compress is not in blacklist, described in carrying out, from the file that will compress, extract the step of the part of pre-sizing; When the file layout of the judgement file that will compress is in blacklist, this document is not compressed.
3. method according to claim 2, wherein,
When the compression factor in judgement after having compressed does not reach predetermined compression factor, the file layout of this document is added in described blacklist.
4. according to the method described in any one in claim 1-3, wherein,
The part of the described pre-sizing extracting from the file that will compress is extracted from beginning, center section or the end of the described file that will compress.
5. according to the method described in any one in claim 1-4, wherein, the file of the described file that will compress for transmitting between two equipment connecting by network.
6. a file dynamic press device, comprising:
Extraction module, it is suitable for extracting the file from compressing the part of pre-sizing;
Compression module, its part that is suitable for pre-sizing that described extraction module is extracted is compressed; And
Compression identification module, it judges whether the compression factor after described compression module has compressed reaches predetermined compression factor;
Wherein, when the compression factor after the judgement of described compression identification module has been compressed reaches predetermined compression factor, described compression module compresses this document; When the compression factor after the judgement of described compression identification module has been compressed does not reach predetermined compression factor, described compression module no longer compresses this document.
7. device according to claim 6, also comprises:
Memory module, it is suitable for storing blacklist, deposits the file layout that does not need compression in this blacklist;
Judge module, it is suitable for judging whether the file layout of the file that will compress is arranged in blacklist;
Wherein, the file layout of the file that will compress when the judgement of described judge module is not in blacklist time, and described extraction module extracts the part of pre-sizing from the file that will compress; The file layout of the file that will compress when the judgement of described judge module is in blacklist time, and described compression module does not compress this document.
8. device according to claim 7, wherein,
The file layout of the file that will compress in the judgement of described judge module is not in blacklist in the situation that, and when the compression factor after the judgement of described compression identification module has been compressed does not reach predetermined compression factor, the file layout of the file that described compression identification module will compress this is deposited in the described blacklist of storing in described memory module.
9. according to the device described in any one in claim 6-8, wherein,
The predetermined portions of the described file that will compress that described extraction module extracts extracts from beginning, center section or the end of the described file that will compress.
10. according to installing described in any one in claim 6-9, wherein,
The file of the described file that will compress for transmitting between two equipment connecting by network.
Priority Applications (1)
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| CN201310656694.XA CN103699587A (en) | 2013-12-06 | 2013-12-06 | Dynamic compression method and dynamic compression device for files |
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| CN201310656694.XA CN103699587A (en) | 2013-12-06 | 2013-12-06 | Dynamic compression method and dynamic compression device for files |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106161633A (en) * | 2016-07-20 | 2016-11-23 | 柏科数据技术（深圳）股份有限公司 | A kind of based on the transmission method of packaging file under cloud computing environment and system |
| WO2017050283A1 (en) * | 2015-09-25 | 2017-03-30 | 中兴通讯股份有限公司 | Data processing method and device |
| WO2017185597A1 (en) * | 2016-04-25 | 2017-11-02 | 中兴通讯股份有限公司 | Data sending method and apparatus |
| CN111597773A (en) * | 2019-02-01 | 2020-08-28 | 珠海金山办公软件有限公司 | Compression processing method and device, computer storage medium and terminal |
-
2013
- 2013-12-06 CN CN201310656694.XA patent/CN103699587A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017050283A1 (en) * | 2015-09-25 | 2017-03-30 | 中兴通讯股份有限公司 | Data processing method and device |
| WO2017185597A1 (en) * | 2016-04-25 | 2017-11-02 | 中兴通讯股份有限公司 | Data sending method and apparatus |
| CN106161633A (en) * | 2016-07-20 | 2016-11-23 | 柏科数据技术（深圳）股份有限公司 | A kind of based on the transmission method of packaging file under cloud computing environment and system |
| CN111597773A (en) * | 2019-02-01 | 2020-08-28 | 珠海金山办公软件有限公司 | Compression processing method and device, computer storage medium and terminal |
| CN111597773B (en) * | 2019-02-01 | 2024-03-12 | 珠海金山办公软件有限公司 | Compression processing method, compression processing device, computer storage medium and terminal |
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