CN110134350B - Print file segmentation and transmission method - Google Patents
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- CN110134350B CN110134350B CN201910432764.0A CN201910432764A CN110134350B CN 110134350 B CN110134350 B CN 110134350B CN 201910432764 A CN201910432764 A CN 201910432764A CN 110134350 B CN110134350 B CN 110134350B
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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
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
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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
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1244—Job translation or job parsing, e.g. page banding
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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
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1268—Job submission, e.g. submitting print job order or request not the print data itself
- G06F3/1272—Digital storefront, e.g. e-ordering, web2print, submitting a job from a remote submission screen
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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
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
- G06F3/1285—Remote printer device, e.g. being remote from client or server
- G06F3/1287—Remote printer device, e.g. being remote from client or server via internet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a print file segmentation transmission method, which is used for a cloud server and comprises the steps of obtaining a requested print file according to a request sent by a printing terminal; dividing and processing each file page of the printing file into N data blocks based on a preset rule and generating serial numbers of the N data blocks; according to the page sequence number of the file page corresponding to each data block and the sequence number of the data block, performing ascending sequencing on the data blocks of the obtained printing file; sequentially transmitting the sorted data blocks to a printing terminal in an input and output stream form; the input output stream of each transmission at least comprises the data block currently transmitted, the serial number of the data block and the total page number of the printing file. By dividing and transmitting the printing file, the network requirement of transmission is reduced, and wide deployment of the printing terminal machine is facilitated.
Description
Technical Field
The invention belongs to the technical field of Internet printing, and particularly relates to a printing file segmentation and transmission method.
Background
With the development of network technology and shared economy, content printing services based on internet printing and shared document platforms have emerged. The shared document platform constructs a content resource library of the shared document platform based on the shared resources uploaded by the receiving user. When the user uses the content printing service, the user can select the needed content resource from the content resource library, and directly perform cloud printing, and finally obtain the paper edition data presenting the corresponding content from the off-line printing terminal.
In the implementation process of the content printing service, when a shared document platform constructs a content resource library, shared resources uploaded by users are converted into document files in a preset format in a unified manner, but the sizes of the document files obtained through conversion are different due to different sizes of the shared resources, and if the document file corresponding to the content resource selected by the user is larger, the requirement on a network for directly transmitting the file to a printing terminal during cloud printing is higher, which is not beneficial to wide deployment of the printing terminal.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
One of the technical problems to be solved by the present invention is to provide a method for dividing and transmitting a print file, which reduces the network requirement for transmitting the print file, so as to facilitate the online and wider deployment of the print terminal.
The embodiment of the application provides a print file segmentation transmission method, which is used for a cloud server and comprises the following steps,
acquiring a requested printing file according to a request sent by a printing terminal;
dividing and processing each file page of the printing file into N data blocks based on a preset rule and generating serial numbers of the N data blocks, wherein N is a preset dividing number;
according to the page sequence number of the file page corresponding to each data block and the sequence number of the data block, performing ascending sequencing on the obtained data blocks of the printing file;
sequentially transmitting the sorted data blocks to a printing terminal in an input and output stream form; the input and output stream of each transmission at least comprises the data block currently transmitted, the serial number of the data block and the total page number of the printing file.
Preferably, in the process of sequentially transmitting the ordered data blocks to the printing terminal in the form of input and output streams, each transmission is specifically,
sequentially writing head identification data, printing service data, currently transmitted data block data and tail identification data into the input/output stream;
the head mark data and/or the tail mark data comprise serial number information of the data block, and the printing service data comprise total page number information of the printing file.
Preferably, the request sent by the printing terminal includes an order number corresponding to the print file; the order number information is also included in the input and output streams of each transmission.
Preferably, each document page of the print document is divided into N data blocks, including the steps of:
converting each document page of the printed document into a picture;
dividing each page of picture into N sub-pictures;
and performing PRN conversion on each sub-picture to obtain N data blocks.
Preferably, the format of the print file is a PDF format;
each document page of the print document is converted to a picture by calling the ghostscript component.
Preferably, the dividing of each page of picture into N sub-pictures specifically includes executing the following steps for each page of picture respectively:
acquiring height information of the page picture;
and dividing the page picture horizontally by N according to the height information to obtain N sub-pictures.
Preferably, the dividing of each page of picture into N sub-pictures specifically includes executing the following steps for each page of picture respectively:
acquiring the width information of the page picture;
and dividing the page picture into N equal parts vertically according to the width information to obtain N sub-pictures.
Preferably, the printing drive of the printing terminal is called to perform virtual printing on each sub-picture, and PRN format data corresponding to each sub-picture is output to obtain N data blocks.
Preferably, the division number N is 40.
The embodiment of the application also provides a printing file division transmission method for a printing terminal, which comprises the following steps,
step 1, sending a request to a cloud server;
step 2, receiving an input output stream sent by a cloud server;
step 3, analyzing the currently received input and output stream, acquiring data block data, a data block serial number and the total page number of the print file, and caching;
step 4, judging whether the number of the cached data blocks reaches a preset division number, if so, executing step 5, otherwise, executing step 2;
step 5, combining the cached data block data into a page file according to a preset rule and a data block serial number, printing and outputting the page file, and adding one to a printing count value;
and 6, judging whether the printing count value reaches the total page number of the printed file, if so, outputting a printing completion message, otherwise, emptying the cache, and continuing to execute the step 2.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
by dividing and transmitting the printing file, the network requirement of transmission is reduced, and wide deployment of the printing terminal machine is facilitated. And the data blocks of each page are combined and printed when being received, and the user experience is better when the data blocks are received and printed.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the technology or prior art of the present application and are incorporated in and constitute a part of this specification. The drawings expressing the embodiments of the present application are used for explaining the technical solutions of the present application, and should not be construed as limiting the technical solutions of the present application.
FIG. 1 is a flow chart illustrating a print file splitting transmission method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating another print file splitting transmission method according to an embodiment of the present invention.
Detailed Description
The following detailed description will be given with reference to the accompanying drawings and examples to explain how to apply the technical means to solve the technical problems and to achieve the technical effects. The embodiments and the features of the embodiments can be combined without conflict, and the technical solutions formed are all within the scope of the present invention.
To facilitate understanding of the present invention, a description will first be given of a scenario and an overall process involved in the present application.
As mentioned in the background art, a user uses the APP to select a desired content resource, and then selects a printing terminal for printing (for example, selects a printing terminal closest to the user from a printing terminal distribution map provided by the APP), and determines to submit an order. The background system of the content printing service informs a printing terminal selected by a user according to an order, the printing terminal self-checks to confirm that printing can be performed, and sends a request to a cloud server to request to acquire content resource data to be printed. The cloud server responds to the request, data transmission is carried out, and the printing terminal receives the data for printing. The present invention will be described below from the cloud server side and the print terminal side, respectively.
Fig. 1 is a schematic flow chart of a print file splitting transmission method according to an embodiment of the present invention. As shown in fig. 1, the method is applied to a cloud server, and comprises the following steps,
step S110, according to the request sent by the printing terminal, the requested printing file is obtained. For example, the request includes storage path information of a required printing file, and the cloud server accesses and acquires the printing file from a storage system of the shared document platform according to the storage path information, wherein the printing file is a carrier of resources required by a user.
Then, in step S120, each file page of the acquired print file is divided into N data blocks and serial numbers of the N data blocks are generated based on a predetermined rule, where N is a preset division number.
In this step, the print file is divided into a plurality of smaller data blocks for facilitating subsequent transmission, and since the minimum unit in the print scene is one page, the division is performed in units of each document page of the print file. The preset rule is a preset dividing numbering rule of the cloud server and the printing terminal, and is a basis for dividing each document page or combining and restoring a plurality of data blocks into one document page.
In a specific embodiment, the process of dividing each document page of the print document into N data blocks includes the following steps:
each document page of the printed document is first converted into a picture. It should be noted that, the predetermined format conversion performed by the shared document platform when constructing the content resource library generally converts the shared resource into a PDF format, so as to facilitate unified management (e.g., facilitate implementing preview). Each document page of the printing file in the PDF format is converted into a picture, which can be realized by calling various PDF processing components, for example, calling a cross-platform ghostscript component to page the printing file, and converting each document page into a picture.
Then, each page of picture is divided into N sub-pictures. The division mode is various, and in order to reduce the realization difficulty, horizontal or vertical division is generally performed based on a preset rule. While the number of divisions cannot be too large or too small based on the overall efficiency, the number of divisions N is preferably selected to be 40.
Specifically, the height information/width information of the page picture may be acquired first, and horizontal 40 halving/vertical 40 halving will be performed in a predetermined manner according to the height information/width information. For example, horizontally from top to bottom or vertically from left to right, and based on this manner generates a sequence number corresponding to the final data block. For example, when the sub-picture is divided horizontally from top to bottom, the sequence number of the data block corresponding to the first divided sub-picture is 1, and then the process is repeated, and the sequence number of the data block corresponding to the last divided sub-picture is 40.
Finally, PRN conversion is performed on each divided sub-picture to obtain 40 data blocks. Here, PRN conversion refers to converting a sub-picture into PRN format data. In the field of printing technology, PRN format data is essentially composed of print commands for a particular printer, i.e., PRN data is associated with a driver for a particular printer, and PRN data generated by different printer drivers for the same source file are not identical.
Therefore, in the present application, each sub-picture is virtually printed by calling the print driver of the print terminal to perform PRN conversion on each sub-picture. Therefore, after the received data block data is combined by the subsequent printing terminal, the obtained data does not need to be converted again, and can be directly printed, so that the realization complexity of the offline printing terminal is reduced, and the popularization and the deployment of the printing terminal are also facilitated.
Returning to fig. 1, after step S120, step S130 is executed to sort the data blocks of the obtained print file in ascending order according to the page number of the file page corresponding to each data block and the serial number of the data block. Specifically, continuing with the above embodiment as an example, each file of the print file is divided into 40 data blocks, where the ascending order means that the 40 data blocks corresponding to the first file page are sorted according to the sequence numbers 1 to 40, then the 40 data blocks corresponding to the second file page are sorted according to the sequence numbers 1 to 40 after the 40 th data block corresponding to the first file page, and so on, and all the data blocks generated by the print file are sorted.
Finally, as shown in step S140 in fig. 1, the sorted data blocks are sequentially transmitted to the printing terminal in an input-output stream form; the input output stream of each transmission at least comprises the data block currently transmitted, the serial number of the data block and the total page number of the printing file. In the method, data transmission is carried out in an input-output (IO) stream mode, the sorted data blocks are sequentially transmitted to the printing terminal, and in order to realize the receiving and combination recovery of the data by the printing terminal, the IO stream transmitted each time at least comprises the serial number of the data block and the total page number of a printing file besides the data block data transmitted currently.
Specifically, in the process of sequentially transmitting the data blocks to the printing terminal in the form of input and output streams, each transmission is specifically,
sequentially writing head identification data, printing service data, currently transmitted data block data and tail identification data into the input/output stream; the head identification data and/or the tail identification data comprise serial number information of the data block, and the printing service data comprise the total page number of the printing file.
In a specific embodiment, the request sent by the printing terminal includes order business information corresponding to the printing file; the input and output flow of each transmission also comprises order service information. For example, order service information is added to print service data in each transmission.
Fig. 2 is a flowchart illustrating another print file splitting transmission method according to an embodiment of the present invention. As shown in fig. 2, the method is used for a printing terminal, and comprises the following steps:
step S210, sending a request to a cloud server for acquiring content resource data to be printed.
And step S220, receiving an input output stream sent by the cloud server.
Step S230, parsing the currently received input/output stream, obtaining a data block data and a data block serial number, and caching.
Step S240, determining whether the number of the cached data blocks reaches a preset number of partitions, if so, performing step S250, otherwise, performing step S220. For example, the number of divided pages is 40, and after 40 pieces of data are received and buffered, step S250 is performed.
And step S250, combining the cached data block data into a page target file according to a preset rule and the data block serial number, printing and outputting the target file, and adding one to the count value of the number of printed pages. That is, data of one page is acquired, the page data is printed, and several pages printed are counted.
And continuing to step S260, judging whether the count value of the number of printed pages reaches the total number of printed pages of the printed file, if so, executing the step to output a printing completion message, otherwise, clearing the cache, and continuing to execute step S220. That is, when the printing is not completed, the printing terminal receives and prints.
The invention reduces the network requirement of transmission by dividing and transmitting the printing file, and is beneficial to the wide deployment of the printing terminal machine. And the data blocks of each page are combined and printed when being received, and the user experience is better when the data blocks are received and printed.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A print file division transmission method is used for a cloud server in a content printing service system and comprises the following steps,
acquiring a requested printing file according to a request sent by a printing terminal in a content printing service system;
dividing each file page of the printing file into N data blocks based on a preset rule and generating serial numbers of the N data blocks, wherein N is a preset dividing number;
according to the page sequence number of the file page corresponding to each data block and the sequence number of the data block, performing ascending sequencing on the obtained data blocks of the printing file;
sequentially transmitting the sorted data blocks to a printing terminal in an input and output stream form; the input and output stream of each transmission at least comprises the data block data currently transmitted, the serial number of the data block and the total page number of the print file;
wherein, each file page of the print file is divided into N data blocks, and the method comprises the following steps:
converting each document page of the printed document into a picture;
dividing each page of picture into N sub-pictures;
and calling a printing driver of the printing terminal machine to perform virtual printing on each sub-picture respectively, and outputting PRN format data corresponding to each sub-picture to obtain N data blocks.
2. The method for splitting and transmitting documents according to claim 1, wherein during the sequential transmission of the ordered data blocks to the printing terminal in the form of input and output streams, each transmission is specifically,
sequentially writing head identification data, printing service data, currently transmitted data block data and tail identification data into the input/output stream;
the head mark data and/or the tail mark data comprise serial number information of the data block, and the printing service data comprise total page number information of the printing file.
3. The file splitting transmission method according to claim 2, wherein the request sent from the printing terminal includes an order number corresponding to the print file; the order number information is also included in the input and output stream of each transmission.
4. The file division transmission method according to claim 1, wherein the format of the print file is a PDF format;
each document page of the print document is converted to a picture by calling the ghostscript component.
5. The file division transmission method according to claim 1, wherein dividing each page of picture into N sub-pictures comprises performing the following steps for each page of picture respectively:
acquiring height information of the page picture;
and according to the height information, dividing the page of picture horizontally by N to obtain N sub-pictures.
6. The file division transmission method according to claim 1, wherein dividing each page of picture into N sub-pictures comprises performing the following steps for each page of picture respectively:
acquiring the width information of the page picture;
and dividing the page picture into N equal parts vertically according to the width information to obtain N sub-pictures.
7. The file splitting transmission method according to any of claims 1 to 6, wherein said number of splits N is 40.
8. A print file dividing and transmitting method is characterized in that a printing terminal used in a content printing service system comprises the following steps,
step 1, sending a request to a cloud server in a content printing service system;
step 2, receiving an input output stream sent by the cloud server;
step 3, analyzing the currently received input and output stream, acquiring data block data, a data block serial number and the total page number of the print file, and caching;
step 4, judging whether the number of the cached data blocks reaches a preset division number, if so, executing step 5, otherwise, executing step 2;
step 5, combining the cached data block data into a page file according to a preset rule and a data block serial number, printing and outputting the page file, and adding one to a printing count value;
step 6, judging whether the printing count value reaches the total page number of the printed file, if so, outputting a printing completion message, otherwise, clearing the cache, and continuing to execute the step 2;
and the data block data in the input output stream is generated by calling a printing driver of the printing terminal machine to perform virtual printing.
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| CN110825330A (en) * | 2019-10-11 | 2020-02-21 | 杭州珐珞斯科技有限公司 | Cloud printing method, printing cloud box, system and storage medium based on file fragmentation |
| CN113452630B (en) * | 2020-03-27 | 2024-02-02 | 京东方科技集团股份有限公司 | Data merging method, data splitting method, device, equipment and storage medium |
| CN111880752B (en) * | 2020-07-28 | 2022-12-23 | 平安科技（深圳）有限公司 | Seal printing method and device, electronic equipment and storage medium |
| CN113031888B (en) * | 2021-04-09 | 2022-11-08 | 厦门喵宝科技有限公司 | Method for printing large document based on embedded small memory device |
| CN113554335B (en) * | 2021-08-02 | 2022-05-10 | 南京邮电大学 | Production planning method based on big data |
| CN114943089B (en) * | 2022-07-22 | 2022-10-11 | 清华大学苏州汽车研究院（吴江） | Information security protection system for enterprise operation online data sharing |
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| CN105119967A (en) * | 2015-07-15 | 2015-12-02 | 天脉聚源（北京）教育科技有限公司 | Picture segmentation transmission method and device |
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| CN102117188A (en) * | 2009-12-31 | 2011-07-06 | 鸿富锦精密工业（深圳）有限公司 | Printing system and printing method |
| JP5654806B2 (en) * | 2010-08-31 | 2015-01-14 | キヤノン株式会社 | Server system, printing apparatus, network printing system having them, and method therefor |
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| US6373586B1 (en) * | 1997-12-27 | 2002-04-16 | Samsung Electronics Co., Ltd. | Image printing system and partitioned printing method therein |
| CN105119967A (en) * | 2015-07-15 | 2015-12-02 | 天脉聚源（北京）教育科技有限公司 | Picture segmentation transmission method and device |
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