CN102761540A - Data compression method, device and system and server - Google Patents
Data compression method, device and system and server Download PDFInfo
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Abstract
The invention discloses a data compression method, device and system and a server. The data compression method comprises a calling module, an acquisition module and a compression module, wherein the calling module is used for calling a pre-stored compression mode configuration table including the corresponding relationship between file types and compression modes; the acquisition module is used for acquiring the file types of data and determining whether the compression modes corresponding to the file types exist or not according to the compression mode configuration table, and if yes, acquiring the compression modes corresponding to the file types; and the compression module is used for compressing data to be compressed according to the compression modes acquired by the acquisition module. By virtue of the technical scheme provided by the invention, suitable compression modes can be automatically configured for users, and the compression speed is increased under the condition that the compression ratio is almost not lost, so that both the compression time and the system resource are saved.
Description
Technical field
The present invention relates to field of computer technology, particularly relate to a kind of data compression method, device, system and server.
Background technology
In the prior art, tool of compression changes file content and data through certain compression algorithm, makes the memory space that data occupancy is littler.Particularly, ordinary file generally all comprises certain repeating data, and the data of these repetitions often occupy many times memory space; Tool of compression needs these repeating datas in the locating file; Through suitable algorithm data are rebuild, let a plurality of repeating datas only take a memory space, when decompressing; File after will compressing through corresponding decompression algorithm again reduces, and this compression algorithm generally belongs to lossless compress.For example, in text, comprise a plurality of identical speech " People's Republic of China (PRC) ", after the tool of compression compression, only need take a memory space and store, thereby reach the purpose of dwindling file.
In addition, tool of compression not only can help the user to save the space, also can a plurality of files be broken into a compressed package simultaneously, to make things convenient for user ID, transmit and to share.At present, many moneys tool of compression is arranged in the prior art, for example: winzip tool of compression, winrar tool of compression, 7-zip tool of compression etc.; With the corresponding compression algorithm of tool of compression also have multiple, for example: rar form, zip form, 7z form, cab form etc.
Above-mentioned each tool of compression and compression algorithm all have characteristics separately.For example: the advantage of zip form is to use extensively, and compression speed is fast, but compression ratio is less; The rar form compression ratio than zip form usually is high; But compression speed is slower; And the winrar tool of compression can executive program compression special optimization algorithm on 32 and 64 Intel (Intel) microprocessor for text, sound and image, has further improved compression ratio; The 7z form is all higher than zip form and rar format compressed rate usually, and compression time is also all long than zip form and rar form simultaneously.
In the prior art; The data of some file format are to have carried out overcompression; For example, the video file of rmvb form, Fig. 1 are to use compressed software to carry out the sketch map of parameter configuration in the prior art; When the user used tool of compression to carry out File Compress, tool of compression need all compress the All Files that the user selects.But, for some file format compressed or the fewer file format of redundant information, after compressing through tool of compression, can't reduce the file volume basically, the file volume that perhaps reduces is very limited.If the data to this class file format are compressed; Not only do not reach the purpose of compressed file, also can waste a lot of compression times, and; When these file formats of compression, also waste system resources such as more CPU, internal memory, but do not reached compression effectiveness preferably.
Summary of the invention
The present invention provides a kind of data compression method, device, system and server, with solve in the prior art to compressed or the fewer file format of redundant information compress again and the compression time that causes and the problem of system resource waste.
The present invention provides a kind of data compression method, comprising: call the compress mode allocation list of storage in advance, wherein, the compress mode allocation list comprises: the corresponding relation between file type and the compress mode; Obtain the file type of data, determine whether to exist and the corresponding compress mode of file type,, then obtain and the corresponding compress mode of file type if exist according to the compress mode allocation list; Treating packed data according to the compress mode of obtaining compresses.
Preferably; Said method also comprises: information in the compress mode allocation list and server sync; The mean pressure shrinkage of each file type of server statistics is provided with file type and the corresponding relation between the compress mode in the compress mode allocation list according to the mean pressure shrinkage.
Preferably, above-mentioned compress mode allocation list specifically comprises: file type, compression algorithm, statistics are accomplished the one-to-one relationship between identifier, mean pressure shrinkage and the compress mode;
Preferably, above-mentioned data to be compressed comprise one or more files.
Preferably; Above-mentioned compress mode comprises: standard compression mode, Fast Compression mode and store compressed mode; Wherein, The standard compression mode adopts the compression algorithm of acquiescence that file is compressed, and the Fast Compression mode adopts the shortest compression algorithm of compression time that file is compressed, and the store compressed mode adopts directly the mode of file storage in compressed package.
Preferably; Said method also comprises: under situation about not existing with the corresponding compress mode of file type; Adopting the standard compression mode to treat packed data compresses; And current compression parameters information sent to server, wherein, compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
Preferably; The mean pressure shrinkage of said each file type of server statistics; File type and the corresponding relation between the compress mode according to the mean pressure shrinkage is provided with in the said compress mode allocation list are concrete: server is stored the compression parameters information that receives; Quantity in the compression parameters information of same file type reaches under the situation of predetermined threshold, and compression parameters information is added up, and calculates under the different compression algorithm; The mean pressure shrinkage of this document type, and confirm corresponding compress mode according to the mean pressure shrinkage; Server with different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the compress mode allocation list with the corresponding position of file type in; Server is synchronized to the compress mode allocation list in the subscriber computer.
Preferably; Determine whether that according to the compress mode allocation list existence and the corresponding compress mode of file type also comprise: obtain and the corresponding statistics completion of file type identifier according to the compress mode allocation list; Accomplish identifier in statistics and represent under the completed situation, confirm to exist and the corresponding compress mode of file type in the compress mode allocation list.
Preferably; Said method also comprises: accomplish identifier in statistics and represent under the uncompleted situation; Adopting the standard compression mode to treat packed data compresses; And current compression parameters information sent to server, wherein, compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
Preferably; The mean pressure shrinkage of said each file type of server statistics; The file type and the corresponding relation between the compress mode that are provided with in the said compress mode allocation list according to the mean pressure shrinkage specifically comprise: server is stored the compression parameters information that receives; Quantity in the compression parameters information of same file type reaches under the situation of predetermined threshold, and compression parameters information is added up, and calculates under the different compression algorithm; The mean pressure shrinkage of this document type, and confirm corresponding compress mode according to the mean pressure shrinkage; Server with different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the compress mode allocation list with the corresponding position of file type in, and accomplish identifier with the corresponding statistics of this document type in the compress mode allocation list and be set to accomplish; Server is synchronized to the compress mode allocation list in the subscriber computer.
Preferably, confirm that according to the mean pressure shrinkage corresponding compress mode specifically comprises: the mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that compress mode is the store compressed mode; The mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that compress mode is the Fast Compression mode; The mean pressure shrinkage less than 90% situation under; Confirm that compress mode is the standard compression mode, certainly, be not limited to the above-mentioned numerical value of lifting; Those skilled in the art can also adopt other mean pressure shrinkage numerical value according to concrete needs, confirm corresponding compress mode.
The present invention also provides a kind of data compression device, comprising: calling module, be used to call the compress mode allocation list of storage in advance, and wherein, the compress mode allocation list comprises: the corresponding relation between file type and the compress mode; Acquisition module is used to obtain the file type of data, determines whether to exist and the corresponding compress mode of file type according to the compress mode allocation list, if exist, then obtains and the corresponding compress mode of file type; Compression module is used for treating packed data according to the compress mode that acquisition module obtains and compresses.
Preferably, above-mentioned compress mode allocation list specifically comprises: file type, compression algorithm, statistics are accomplished the one-to-one relationship between identifier, mean pressure shrinkage and the compress mode;
Preferably, above-mentioned data to be compressed comprise one or more files;
Preferably; Above-mentioned compress mode comprises: standard compression mode, Fast Compression mode and store compressed mode; Wherein, The standard compression mode adopts the compression algorithm of acquiescence that file is compressed, and the Fast Compression mode adopts the shortest compression algorithm of compression time that file is compressed, and the store compressed mode adopts directly the mode of file storage in compressed package.
Preferably; Above-mentioned compression module also is used for: under situation about not existing with the corresponding compress mode of file type; Adopting the standard compression mode to treat packed data compresses; And current compression parameters information sent to server, wherein, compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
Preferably; Above-mentioned acquisition module also is used for: obtain with the corresponding statistics of file type according to the compress mode allocation list and accomplish identifier; Accomplish identifier in statistics and represent under the completed situation, confirm to exist and the corresponding compress mode of file type in the compress mode configuration; Compression module also is used for: accomplish identifier in statistics and represent under the uncompleted situation; Adopting the standard compression mode to treat packed data compresses; And current compression parameters information sent to server; Wherein, compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
The present invention also provides a kind of server; Comprise: processing module, be used for the compression parameters information that receives is stored, reach under the situation of predetermined threshold in the quantity of the compression parameters information of same file type; Compression parameters information is added up; Calculating under the different compression algorithm, the mean pressure shrinkage of this document type, and confirm corresponding compress mode according to the mean pressure shrinkage; Memory module is used for different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode are stored in compress mode allocation list and the corresponding position of file type; Synchronization module is used for the compress mode allocation list is synchronized to subscriber computer.
Preferably, above-mentioned processing module specifically is used for: the mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that compress mode is the store compressed mode; The mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that compress mode is the Fast Compression mode; The mean pressure shrinkage less than 90% situation under, confirm that compress mode is the standard compression mode.
Preferably; Above-mentioned memory module also is used for: after in different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode being stored in compress mode allocation list and the corresponding position of file type, accomplishing identifier with the corresponding statistics of this document type in the compress mode allocation list and be set to accomplish.
Preferably, above-mentioned server is the high in the clouds server.
The present invention also provides a kind of data compression system, comprising: above-mentioned data compression device and above-mentioned server.
Beneficial effect of the present invention is following:
Through obtaining the compress mode of mating according to the compress mode allocation list automatically file is compressed with the file type of needs compression; Solved in the prior art to compressed or redundant information fewer file format compress again and the compression time that causes and the problem of system resource waste; Under the situation of the file that file that existence had been compressed in the data of needs compression or redundant information are fewer; Can dispose the proper compression mode for the user automatically; Basically do not losing under the situation of compression ratio, promoting compression speed, in addition; Present stage, all kinds file increased gradually, utilized the high in the clouds statistics to upgrade the compress mode allocation list and made that the technical scheme of the embodiment of the invention is suitable for using more.
Description of drawings
Fig. 1 uses compressed software to carry out the sketch map of parameter configuration in the prior art;
Fig. 2 is the flow chart of the data compression method of the embodiment of the invention;
Fig. 3 is the structural representation of the data compression device of the embodiment of the invention;
Fig. 4 is the structural representation of the server of the embodiment of the invention;
Fig. 5 is the structural representation of the data compression system of the embodiment of the invention.
Embodiment
For solve in the prior art to compressed or the fewer file format of redundant information compress again and the compression time that causes and the problem of system resource waste; The invention provides a kind of data compression method, device, system and server; The embodiment of the invention is not being lost under the situation of compression ratio basically; Promote compression speed, the file that had particularly compressed or redundant information is fewer more for a long time, the compression speed of lifting is more obvious.Below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, does not limit the present invention.
Method embodiment
According to embodiments of the invention, a kind of data compression method is provided, Fig. 2 is the flow chart of the data compression method of the embodiment of the invention, and is as shown in Figure 2, comprises following processing according to the data compression method of the embodiment of the invention:
Step 201 is called the compress mode allocation list of storage in advance, and wherein, said compress mode allocation list comprises: the corresponding relation between file type and the compress mode;
Particularly, above-mentioned compress mode allocation list can be stored in this locality, and preferably, above-mentioned compress mode allocation list also comprises: file type, compression algorithm, statistics are accomplished the one-to-one relationship between identifier, mean pressure shrinkage and the compress mode.
Step 202 is obtained the file type of data, determines whether to exist and the corresponding compress mode of file type according to the compress mode allocation list, if exist, then obtains and the corresponding compress mode of file type;
In step 202; If in the compress mode allocation list, do not comprise when statistics is accomplished identifier, that is, and under situation about not existing with the corresponding compress mode of said file type; Adopt said standard compression mode that said data to be compressed are compressed; And current compression parameters information sent to server, wherein, said compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
In step 202; If in the compress mode allocation list, comprise when statistics is accomplished identifier; Determine whether that according to the compress mode allocation list existence and the corresponding compress mode of file type also comprise: obtain with the corresponding statistics of file type according to the compress mode allocation list and (for example accomplish identifier; Statistics has been accomplished in 1 expression; Statistics is not accomplished in 0 expression), accomplish identifier in statistics and represent under the completed situation, confirm to exist and the corresponding compress mode of file type in the compress mode allocation list.
Accomplishing identifier in statistics representes under the uncompleted situation; Needing to adopt the standard compression mode to treat packed data compresses; And current compression parameters information sent to server; Wherein, compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
Preferably, above-mentioned compress mode comprises: standard compression mode, Fast Compression mode and store compressed mode in practical application, can also comprise the high-quality compress mode.Wherein, The standard compression mode adopts the compression algorithm of tool of compression acquiescence that file is compressed; The Fast Compression mode adopts the shortest compression algorithm of compression time that file is compressed; The store compressed mode adopts directly the mode of file storage in compressed package, file is not compressed, and the high-quality compress mode adopts the minimum compression algorithm of compression ratio that file is compressed.
In practical application, except comprising standard compression mode, Fast Compression mode, store compressed mode and the high-quality compress mode, compress mode can also comprise: very fast compress mode, better quality compress mode etc.The compression time of very fast compress mode is greater than the Fast Compression mode, but less than the standard compression mode, and the compression volume of better quality compress mode is greater than the high-quality compress mode, but less than the standard compression mode.
Step 203 is treated packed data according to the compress mode of obtaining and is compressed.
In embodiments of the present invention, above-mentioned data to be compressed can comprise one or more files.
Need to prove,, then need be directed against the different files type, respectively the processing in execution in step 202 and the step 203 if comprise the file of a plurality of different file types in the data.Because a plurality of files need compressed package of boil down at last, therefore, when selecting compress mode, need to select the identical compress mode of compression algorithm according to the compress mode allocation list.For example, need the file of 3 different file types be compressed, to these 3 files; Use 3 kinds of different compression modes that corresponding file is compressed respectively, still, last compression algorithm must be identical; For example, the compressed package that is the .rar form with 3 File Compress.
Informational needs in the compress mode allocation list and server sync, the mean pressure shrinkage of each file type of server statistics is provided with file type and the corresponding relation between the compress mode in the compress mode allocation list according to the mean pressure shrinkage.Above-mentioned server can be the high in the clouds server.
Particularly; Do not comprise that in the compress mode allocation list said server comprised following processing when statistics was accomplished identifier: 1, the said compression parameters information that receives is stored, reach under the situation of predetermined threshold in the quantity of the compression parameters information of same file type; Said compression parameters information is added up; Calculating under the different compression algorithm, the mean pressure shrinkage of this document type, and confirm corresponding compress mode according to said mean pressure shrinkage; 2, said server with said different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the said compress mode allocation list with the corresponding position of said file type in; 3, said server is synchronized to said compress mode allocation list in the subscriber computer.
In the compress mode allocation list, comprise when statistics is accomplished identifier; Accomplish identifier in statistics and represent under the uncompleted situation, current compression parameters information is sent to after the server, server is stored the compression parameters information that receives; Quantity in the compression parameters information of same file type (for example reaches predetermined threshold; 10000) situation under, compression parameters information is added up, calculate under the different compression algorithm; The mean pressure shrinkage of this document type, and confirm corresponding compress mode according to the mean pressure shrinkage; At last; Server with different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the compress mode allocation list with the corresponding position of file type in; And be set to accomplish with the corresponding statistics completion of this document type identifier in the compress mode allocation list, and the compress mode allocation list is synchronized in the subscriber computer.
Preferably, in practical application, server can not be synchronized to the compress mode allocation list in the user's computer yet, but is kept in the server, when tool of compression need call this compress mode allocation list, can from server, obtain.
In above-mentioned processing, the mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that compress mode is the store compressed mode; The mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that compress mode is the Fast Compression mode; The mean pressure shrinkage less than 90% situation under, confirm that compress mode is the standard compression mode.
Instance 1; When data are compressed; Therefore the mean pressure shrinkage of the file of rmvb form wherein, need use the store compressed mode to compress to the file of rmvb form between 95%-100%; The mean pressure shrinkage of alternative document then uses zip compression algorithm and standard compression mode that alternative document is compressed less than 90%.
Instance 2; When data are compressed; Therefore the mean pressure shrinkage of the file of mp3 form wherein, need use zip compression algorithm and Fast Compression mode to compress to the file of mp3 form between 90%-95%; The mean pressure shrinkage of alternative document then uses zip compression algorithm and standard compression mode that alternative document is compressed less than 90%.
Instance 3, when the file to the jpg form compressed, therefore the mean pressure shrinkage of the file of jpg form, need use 7z compression algorithm and Fast Compression mode to compress to the file of jpg form between 90%-95%.
Can find out that from above-mentioned instance the embodiment of the invention is not more than in compression ratio loss under 5% the situation, can improve compression speed as much as possible.
Below embodiment of the invention technique scheme is elaborated.Data compression method according to the embodiment of the invention comprises following processing:
Step 1, user are when using tool of compression and compress mode to be set to " standard compression mode ", and the file of the compression algorithm of recording user, file format, this form is size, quantity of documents and compression ratio always;
Step 2 is dealt into server with the above-mentioned information that writes down;
Step 3, server is through calculating under the different compression algorithm mean pressure shrinkage of respective file form;
Step 4; Server obtains an allocation list (above-mentioned compress mode allocation list) according to data computation: " storage " compress mode that the file format of mean pressure shrinkage between 95% and 100% is added this compression algorithm is tabulated, and the file format of mean pressure shrinkage between 90% and 95% is added " the fastest " compress mode tabulation of this compression algorithm.
Step 5 is synchronized to this allocation list on the subscriber computer, and tool of compression can call this allocation list automatically during user's compressed file next time, thereby reaches under the prerequisite of not damaging compression ratio (ERROR CONTROL is in 5%) basically, promotes compression speed widely.
Need to prove that above-mentioned mean pressure shrinkage and compress mode value corresponding interval can be not limited only to 90%, 95% etc. of top embodiment; Compress mode also is not limited to above-mentioned several kinds of mentioning; Server can be different with the foregoing description according to different demand settings mean pressure shrinkage numerical value, for example, 85%; 70% etc., corresponding with various compress modes.
In sum; Technical scheme by means of the embodiment of the invention; Through automatically obtaining with the compress mode of the file type coupling of needs compression file is compressed according to the compress mode allocation list, solved in the prior art to compressed or the fewer file format of redundant information compress again and the problem of the compression time waste that causes, in the data of needs compression, exist under the situation of the fewer file of the file that compressed or redundant information; Can dispose the proper compression mode for the user automatically; Basically do not losing under the situation of compression ratio, promoting compression speed, in addition; Present stage, all kinds file increased gradually, utilized the high in the clouds statistics to upgrade the compress mode allocation list and made that the technical scheme of the embodiment of the invention is suitable for using more.
Device embodiment one
According to embodiments of the invention; A kind of data compression device is provided; Fig. 3 is the structural representation of the data compression device of the embodiment of the invention; As shown in Figure 3, comprise according to the data compression device of the embodiment of the invention: calling module 30, acquisition module 32 and compression module 34, below carry out detailed explanation to each module of the embodiment of the invention.
Calling module 30 is used to call the compress mode allocation list of storage in advance, and wherein, said compress mode allocation list comprises: the corresponding relation between file type and the compress mode;
Particularly, above-mentioned compress mode allocation list can be stored in this locality, and the compress mode allocation list specifically comprises: file type, compression algorithm, statistics are accomplished the one-to-one relationship between identifier, mean pressure shrinkage and the compress mode.
When the compress mode allocation list comprises that statistics is accomplished identifier; Acquisition module 32 also is used for: obtain with the corresponding statistics of said file type according to said compress mode allocation list and accomplish identifier; Accomplish identifier in said statistics and represent under the completed situation, confirm to exist and the corresponding compress mode of said file type in the said compress mode configuration.
Preferably; In embodiments of the present invention; Accomplish identifier in statistics and represent that under the uncompleted situation, compression module 33 also is used for: adopt the standard compression mode to treat packed data and compress, and current compression parameters information is sent to server; Wherein, compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
Above-mentioned compress mode comprises: standard compression mode, Fast Compression mode, store compressed mode and high-quality compress mode.Wherein, The standard compression mode adopts the compression algorithm of tool of compression acquiescence that file is compressed; The Fast Compression mode adopts the shortest compression algorithm of compression time that file is compressed; The store compressed mode adopts direct with the mode of file storage in compressed package, and the high-quality compress mode adopts the minimum compression algorithm of compression ratio that file is compressed.
In practical application, except comprising standard compression mode, Fast Compression mode, store compressed mode and the high-quality compress mode, compress mode can also comprise: very fast compress mode, better quality compress mode etc.The compression time of very fast compress mode is greater than the Fast Compression mode, but less than the standard compression mode, and the compression volume of better quality compress mode is greater than the high-quality compress mode, but less than the standard compression mode.
Said compression module also is used for: under situation about not existing with the corresponding compress mode of said file type; Adopt said standard compression mode that said data to be compressed are compressed; And current compression parameters information sent to server; Wherein, said compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
In embodiments of the present invention, above-mentioned data to be compressed can comprise one or more files.
Need to prove that if comprise the file of a plurality of different file types in the data, acquisition module 32 need be handled respectively the file of different file types with compression module 34.Because a plurality of files need compressed package of boil down at last, therefore, acquisition module 32 needs to select the identical compress mode of compression algorithm when selecting compress mode according to the compress mode allocation list.For example, need the file of 3 different file types be compressed, to these 3 files; Use 3 kinds of different compression modes that corresponding file is compressed respectively, still, last compression algorithm must be identical; For example, the compressed package that is the .rar form with 3 File Compress.
Instance 1; When data are compressed; Therefore the mean pressure shrinkage of the file of rmvb form wherein, need use the store compressed mode to compress to the file of rmvb form between 95%-100%; The mean pressure shrinkage of alternative document then uses zip compression algorithm and standard compression mode that alternative document is compressed less than 90%.
Instance 2; When data are compressed; Therefore the mean pressure shrinkage of the file of mp3 form wherein, need use zip compression algorithm and Fast Compression mode to compress to the file of mp3 form between 90%-95%; The mean pressure shrinkage of alternative document then uses zip compression algorithm and standard compression mode that alternative document is compressed less than 90%.
Instance 3, when the file to the jpg form compressed, therefore the mean pressure shrinkage of the file of jpg form, need use 7z compression algorithm and Fast Compression mode to compress to the file of jpg form between 90%-95%.
Below in conjunction with instance, embodiment of the invention technique scheme is elaborated.Data compression method according to the embodiment of the invention comprises following processing:
Step 1, user are when using tool of compression and compress mode to be set to " standard compression mode ", and the file of the compression algorithm of compression module 34 recording users, file format, this form is size, quantity of documents and compression ratio always;
The above-mentioned information that step 2, compression module 34 will write down is dealt into server;
Step 3, server is through calculating under the different compression algorithm mean pressure shrinkage of respective file form;
Step 4; Server obtains an allocation list (above-mentioned compress mode allocation list) according to data computation: " storage " compress mode that the file format of mean pressure shrinkage between 95% and 100% is added this compression algorithm is tabulated, and the file format of mean pressure shrinkage between 90% and 95% is added " the fastest " compress mode tabulation of this compression algorithm.
Step 5 is synchronized to this allocation list on the subscriber computer, and calling module 30 can call this allocation list automatically during user's compressed file next time, thereby reaches under the prerequisite of not damaging compression ratio (ERROR CONTROL is in 5%) basically, promotes compression speed widely.
Need to prove that above-mentioned server can be the high in the clouds server.
In sum; Technical scheme by means of the embodiment of the invention; Through obtaining the compress mode of mating according to the compress mode allocation list automatically file is compressed with the file type of needs compression; Solved in the prior art to compressed or redundant information fewer file format compress again and the problem of the compression time waste that causes, in the data of needs compression, exist under the situation of the fewer file of the file that compressed or redundant information, can dispose the proper compression mode for the user automatically; Basically do not losing under the situation of compression ratio, promoting compression speed.
Device embodiment two
According to embodiments of the invention; A kind of server is provided; Fig. 4 is the structural representation of the server of the embodiment of the invention; As shown in Figure 4, comprise according to the server of the embodiment of the invention: processing module 40, memory module 42 and synchronization module 44, below carry out detailed explanation to each module of the embodiment of the invention.
Preferably, above-mentioned processing module 40 specifically is used for: the mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that compress mode is the store compressed mode; The mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that compress mode is the Fast Compression mode; The mean pressure shrinkage less than 90% situation under, confirm that compress mode is the standard compression mode.
Need to prove that above-mentioned server can be the high in the clouds server.
Below technique scheme is elaborated.
Server is stored the compression parameters information that receives; Quantity in the compression parameters information of same file type (for example reaches predetermined threshold; 10000) situation under, compression parameters information is added up, calculate under the different compression algorithm; The mean pressure shrinkage of this document type, and confirm corresponding compress mode according to the mean pressure shrinkage; At last; Server with different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the compress mode allocation list with the corresponding position of file type in; And be set to accomplish with the corresponding statistics completion of this document type identifier in the compress mode allocation list, and the compress mode allocation list is synchronized in the subscriber computer.
Preferably, in practical application, server can not be synchronized to the compress mode allocation list in the user's computer yet, but is kept in the server, when tool of compression need call this compress mode allocation list, can from server, obtain.
In above-mentioned processing, the mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that compress mode is the store compressed mode; The mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that compress mode is the Fast Compression mode; The mean pressure shrinkage less than 90% situation under, confirm that compress mode is the standard compression mode.
Instance 1; When data are compressed; Therefore the mean pressure shrinkage of the file of rmvb form wherein, need use the store compressed mode to compress to the file of rmvb form between 95%-100%; The mean pressure shrinkage of alternative document then uses zip compression algorithm and standard compression mode that alternative document is compressed less than 90%.
Instance 2; When data are compressed; Therefore the mean pressure shrinkage of the file of mp3 form wherein, need use zip compression algorithm and Fast Compression mode to compress to the file of mp3 form between 90%-95%; The mean pressure shrinkage of alternative document then uses zip compression algorithm and standard compression mode that alternative document is compressed less than 90%.
Instance 3, when the file to the jpg form compressed, therefore the mean pressure shrinkage of the file of jpg form, need use 7z compression algorithm and Fast Compression mode to compress to the file of jpg form between 90%-95%.
Can find out that from above-mentioned instance the embodiment of the invention is not more than in compression ratio loss under 5% the situation, can improve compression speed as much as possible.
System embodiment
According to embodiments of the invention; A kind of data compression system is provided; Fig. 5 is the structural representation of the data compression system of the embodiment of the invention, and is as shown in Figure 5, comprises according to the data compression system of the embodiment of the invention: data compression device 50 and server 52.The handling process of data compression device 50 and server 52 has been carried out detailed explanation at said apparatus embodiment one with installing among the embodiment two; The technical scheme of the embodiment of the invention can be understood with reference to said apparatus embodiment one and device embodiment two, repeats no more at this.
In sum; Technical scheme by means of the embodiment of the invention; Through automatically obtaining with the compress mode of the file type coupling of needs compression file is compressed according to the compress mode allocation list, solved in the prior art to compressed or the fewer file format of redundant information compress again and the problem of the compression time waste that causes, in the data of needs compression, exist under the situation of the fewer file of the file that compressed or redundant information; Can dispose the proper compression mode for the user automatically; Basically do not losing under the situation of compression ratio, promoting compression speed, in addition; Present stage, all kinds file increased gradually, utilized the high in the clouds statistics to upgrade the compress mode allocation list and made that the technical scheme of the embodiment of the invention is suitable for using more.
Although be the example purpose, the preferred embodiments of the present invention are disclosed, it also is possible those skilled in the art will recognize various improvement, increase and replacement, therefore, scope of the present invention should be not limited to the foregoing description.
Claims (19)
1. data compression device, its characteristic exists, and comprising:
Calling module is used to call the compress mode allocation list of storage in advance, and wherein, said compress mode allocation list comprises: the corresponding relation between file type and the compress mode;
Acquisition module is used to obtain the file type of said data, determines whether to exist and the corresponding compress mode of said file type according to said compress mode allocation list, if exist, then obtains and the corresponding compress mode of said file type;
Compression module is used for treating packed data according to the compress mode that said acquisition module obtains and compresses.
2. device as claimed in claim 1 is characterized in that,
Said compress mode allocation list specifically comprises: file type, compression algorithm, statistics are accomplished the one-to-one relationship between identifier, mean pressure shrinkage and the compress mode;
Said data to be compressed comprise one or more files.
3. device as claimed in claim 1; It is characterized in that; Said compress mode comprises: standard compression mode, Fast Compression mode and store compressed mode, and wherein, said standard compression mode adopts the compression algorithm of acquiescence that file is compressed; Said Fast Compression mode adopts the shortest compression algorithm of compression time that file is compressed, and said store compressed mode adopts directly the mode of file storage in compressed package.
4. device as claimed in claim 1 is characterized in that,
Said compression module also is used for: under situation about not existing with the corresponding compress mode of said file type; Adopt the standard compression mode that said data to be compressed are compressed; And current compression parameters information sent to server; Wherein, said compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
5. device as claimed in claim 2 is characterized in that,
Said acquisition module also is used for: obtain with the corresponding statistics of said file type according to said compress mode allocation list and accomplish identifier; Accomplish identifier in said statistics and represent under the completed situation, confirm to exist and the corresponding compress mode of said file type in the said compress mode configuration;
Said compression module also is used for: accomplish identifier in said statistics and represent under the uncompleted situation; Adopt said standard compression mode that said data to be compressed are compressed; And current compression parameters information sent to server; Wherein, said compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
6. a server is characterized in that, comprising:
Processing module; Be used for the compression parameters information that receives is stored; Quantity in the compression parameters information of same file type reaches under the situation of predetermined threshold, and said compression parameters information is added up, and calculates under the different compression algorithm; The mean pressure shrinkage of this document type, and confirm corresponding compress mode according to said mean pressure shrinkage;
Memory module is used for said different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode are stored in compress mode allocation list and the corresponding position of said file type;
Synchronization module is used for said compress mode allocation list is synchronized to subscriber computer.
7. server as claimed in claim 6 is characterized in that, said processing module specifically is used for: said mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that said compress mode is said store compressed mode; Said mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that said compress mode is said Fast Compression mode; Said mean pressure shrinkage less than 90% situation under, confirm that said compress mode is said standard compression mode;
Said memory module also is used for: after in said different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode being stored in compress mode allocation list and the corresponding position of said file type, accomplishing identifier with the corresponding statistics of this document type in the said compress mode allocation list and be set to accomplish.
8. server as claimed in claim 6 is characterized in that, said server is the high in the clouds server.
9. a data compression system is characterized in that, comprising: each described data compression device of claim 11 to 15 and each described server of claim 16 to 18.
10. a data compression method is characterized in that, comprising:
Call the compress mode allocation list of storage in advance, wherein, said compress mode allocation list comprises: the corresponding relation between file type and the compress mode;
Obtain the file type of said data, determine whether to exist and the corresponding compress mode of said file type,, then obtain and the corresponding compress mode of said file type if exist according to said compress mode allocation list;
Treating packed data according to the compress mode of obtaining compresses.
11. method as claimed in claim 10 is characterized in that, said method also comprises:
Information and server sync in the said compress mode allocation list, the mean pressure shrinkage of each file type of said server statistics is provided with file type and the corresponding relation between the compress mode in the said compress mode allocation list according to the mean pressure shrinkage.
12. like claim 10 or 11 described methods, it is characterized in that,
Said compress mode allocation list specifically comprises: file type, compression algorithm, statistics are accomplished the one-to-one relationship between identifier, mean pressure shrinkage and the compress mode;
Said data to be compressed comprise one or more files.
13. method as claimed in claim 12; It is characterized in that; Said compress mode comprises: standard compression mode, Fast Compression mode and store compressed mode, and wherein, said standard compression mode adopts the compression algorithm of acquiescence that file is compressed; Said Fast Compression mode adopts the shortest compression algorithm of compression time that file is compressed, and said store compressed mode adopts directly the mode of file storage in compressed package.
14. method as claimed in claim 10 is characterized in that, said method also comprises:
Under situation about not existing with the corresponding compress mode of said file type; Adopt the standard compression mode that said data to be compressed are compressed; And current compression parameters information sent to server; Wherein, said compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
15. method as claimed in claim 11 is characterized in that, the mean pressure shrinkage of each file type of said server statistics, and the file type and the corresponding relation between the compress mode that are provided with in the said compress mode allocation list according to the mean pressure shrinkage specifically comprise:
Said server is stored the said compression parameters information that receives; Quantity in the compression parameters information of same file type reaches under the situation of predetermined threshold; Said compression parameters information is added up; Calculating under the different compression algorithm, the mean pressure shrinkage of this document type, and confirm corresponding compress mode according to said mean pressure shrinkage;
Said server with said different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the said compress mode allocation list with the corresponding position of said file type in;
Said server is synchronized to said compress mode allocation list in the subscriber computer.
16. method as claimed in claim 12 is characterized in that, determines whether to exist with the corresponding compress mode of said file type according to said compress mode allocation list also to comprise:
Obtain and the corresponding statistics completion of said file type identifier according to said compress mode allocation list; Accomplish identifier in said statistics and represent under the completed situation, confirm to exist and the corresponding compress mode of said file type in the said compress mode allocation list.
17. method as claimed in claim 16 is characterized in that, said method also comprises:
Accomplishing identifier in said statistics representes under the uncompleted situation; Adopt said standard compression mode that said data to be compressed are compressed; And current compression parameters information sent to server; Wherein, said compression parameters information comprises: file type, compression algorithm, file size, quantity of documents and compression ratio.
18. method as claimed in claim 17 is characterized in that, the mean pressure shrinkage of each file type of said server statistics, and the file type and the corresponding relation between the compress mode that are provided with in the said compress mode allocation list according to the mean pressure shrinkage specifically comprise:
Said server is stored the said compression parameters information that receives; Quantity in the compression parameters information of same file type reaches under the situation of predetermined threshold; Said compression parameters information is added up; Calculating under the different compression algorithm, the mean pressure shrinkage of this document type, and confirm corresponding compress mode according to said mean pressure shrinkage;
Said server with said different compression algorithm, corresponding mean pressure shrinkage and corresponding compress mode be stored in the said compress mode allocation list with the corresponding position of said file type in, and accomplish identifier with the corresponding statistics of this document type in the said compress mode allocation list and be set to accomplish;
Said server is synchronized to said compress mode allocation list in the subscriber computer.
19. like claim 15 or 18 described methods, it is characterized in that, confirm that according to said mean pressure shrinkage corresponding compress mode specifically comprises:
Said mean pressure shrinkage more than or equal to 95% and smaller or equal to 100% situation under, confirm that said compress mode is said store compressed mode;
Said mean pressure shrinkage more than or equal to 90% and less than 95% situation under, confirm that said compress mode is said Fast Compression mode;
Said mean pressure shrinkage less than 90% situation under, confirm that said compress mode is said standard compression mode.
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