CN101131626A - Data transmission system and method for distributed optical grating picture processing - Google Patents
Data transmission system and method for distributed optical grating picture processing Download PDFInfo
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- CN101131626A CN101131626A CNA2006101125669A CN200610112566A CN101131626A CN 101131626 A CN101131626 A CN 101131626A CN A2006101125669 A CNA2006101125669 A CN A2006101125669A CN 200610112566 A CN200610112566 A CN 200610112566A CN 101131626 A CN101131626 A CN 101131626A
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Abstract
This invention discloses a kind of distributed grating image processing data transfer system of the figure and image printing treatment. In this invention method after the grating image processing controller interprets the printing describing language to the document data use the user data paper agreement to distribute it to the grating processor for grated process. In this invention system the grating image processing controller connects with the multiple grating image processor through the first data transfer module and the first transfer module is distributed to the grating image processor for grated process through the user data paper agreement after the first transfer module interprets the printing describing language to the document data in the grating image processing controller. By using this invention the transfer velocity is quicker and the occupation for the network resource is less and it improves the getting velocity of the grating image processing system for the processing work resource at the same time improves the processing velocity of the distributed grating processing system and it is satisfied for the requirement of high speed printing output device.
Description
Technical field
The present invention relates to a kind of print data transmission system and method, refer more particularly to a kind of data transmission system and method for application distribution raster image processing.
Background technology
RIP (Raster Image Processing), the full name raster image processor.The effect of RIP in colored desktop publishing is crucial, and it is related to the quality and the speed of output, even the running environment of total system, can be described as the core of colored desktop publishing.The main effect of RIP is the lattice information that becomes printer or film setter to write down various images, figure and literal interpretation in the computer manufacture space of a whole page, controls printer or film setter then and is recorded in image lattice information on the paper or on the film.
RIP is divided into two kinds of hardware raster image processor (hard RIP) and software RIP (soft RIP) usually, and the RIP of soft or hard combination is also arranged.Hard RIP is actually the computing machine of a special use, is used for explaining page info; Soft RIP carries out the page by software to calculate, and will explain that good recorded information sends film setter to by specific interface card.
For the software RIP that is used for rasterization process, it passes through printing descriptive language, and the processing as data layouts such as Postcript, Portable Document Format generates device-dependent rasterisation dot array data.For PC or server, RIP software shows as an application program independently.RIP software has following characteristics:
1, turning to device-dependent dot array data with device-independent printing descriptive language grating.Common printing descriptive language comprises PostScript, PDF (Portable Document Format) or the like.These common features of printing descriptive language are that their described content is with device-independent.In the time need being presented in the content of these descriptions on the output device again, just need to use RIP to carry out corresponding explanation and conversion work;
2, carry out highdensity calculation task.RIP software need carry out highdensity computing in the process of handling print job, all very high to the utilization factor of CPU and internal memory, when the RIP processing operation, CPU generally is in fully loaded utilization factor state;
3, in the process of RIP software processes print job, if obtain high-speed treatment effeciency, so just need want on the print job source data enough soon obtaining, otherwise will block the speed of RIP software processes operation.
Existing distributed RIP system is that (Transmission Control Protocol, TCP) transmission mode is handled a plurality of RIP machines of data transfer by the mode of file or by transmission control protocol on data transmission.Owing to need carry out a large amount of file operations at different machinery compartments by the mode of file transfer, thereby can there be the deficiency of the overall treatment efficiency that significantly reduces system in file transfer; Then can there be the network bandwidth that significantly reduces a plurality of RIP machines centre, the deficiency that whole data transmission efficiency is descended by the TCP transmission mode.For print out equipment at a high speed, the RIP machine all can cause RIP in the decline of obtaining on the processing operation source data performance by the file mode Data transmission or by the TCP transmission mode, finally causes the decline of overall distribution formula RIP handling property.And these aspect performance decrease will directly cause can't satisfying high-speed equipment to the requirement on the real-time.
Summary of the invention
The invention provides data transmission system and the method for a kind of distributed RIP, in order to solve the transmission speed that data transmission exists in the existing distributed RIP system slow, take the many problems of resource.
In the technical scheme provided by the present invention, comprise raster image processing controller, a plurality of raster image processor, also comprise first data transmission module, the raster image processing controller links to each other with a plurality of raster image processors by described first data transmission module, described first data transmission module is distributed to described raster image processor by User Datagram Protoco (UDP) and carries out rasterization process after described raster image processing controller will be printed descriptive language and be construed to file data.
Preferably, further comprise at least one feedback device, described feedback device links to each other with corresponding described raster image processor, be used for the information feedback of the received file data of corresponding raster image processor to described raster image processing controller, described raster image processing controller sends file data according to the information of described feedback by described first data transmission module.
Preferably, described raster image processor further comprises record cell, is used to write down described raster image processing controller and does not send successful file data information;
Described feedback device links to each other with corresponding described raster image processor, be used for information feedback with the described recording unit records of corresponding raster image processor to described raster image processing controller, described raster image processing controller sends file data by the information of described feedback by described first data transmission module.
Preferably, described feedback device is the feedback device by transmission control protocol transmission data.
Preferably, described raster image processing controller further comprises compression unit, and described raster image processor further comprises decompression unit, wherein:
After the file data that described compression unit is construed to the raster image processing controller compresses,, transfer to raster image processor after described decompression unit decompresses the file data that is distributed to and carry out rasterization process by described first data transmission module distribution.
Preferably, comprise buffer memory, described decompression unit decompresses the file data that is distributed in buffer memory after, raster image processor file data to described decompression in buffer memory carries out rasterization process.
Preferably, further comprise first network interface card, second network interface card, described raster image processing controller and described first data transmission module are by the first network interface card transfer files data, and described raster image processing controller obtains the printing descriptive language data of external transmission by second network interface card.
Preferably, further comprise the Data Control module, link to each other with a plurality of raster image processors with described raster image processing controller, be used for coordinating data sequential delivery between described raster image processing controller and the described raster image processor by transmission control protocol.
Preferably, further comprise second data transmission module, handover module, wherein:
Handover module links to each other with described raster image processing controller, second data transmission module, is used for when detecting described raster image processor and be one, and file data is switched to the transmission of second data transmission module;
Second data transmission module, link to each other with described raster image processing controller, raster image processor, be used for after described raster image processing controller will be printed descriptive language and be construed to file data, transferring to described raster image processor by transmission control protocol and carrying out rasterization process.
The data transmission method that the present invention also provides a kind of distributed optical grating picture to handle comprises the steps:
After the raster image processing controller will be printed descriptive language and be construed to file data, be distributed to raster image processor by User Datagram Protoco (UDP) and carry out rasterization process.
Preferably, further comprise the steps:
To described raster image processing controller, described raster image processing controller sends file data according to the information of described feedback with the information feedback of the received file data of corresponding raster image processor.
Preferably, further comprise the steps:
Write down described raster image processing controller and do not send successful file data information;
To described raster image processing controller, described raster image processing controller sends file data by the information of described feedback with the information feedback of the described record of corresponding raster image processor.
Preferably, the information feedback of described described record with corresponding raster image processor is to described raster image processing controller, by the transmission control protocol feedback.
Preferably, further comprise the steps:
Distribute after the file data compression that described raster image processing controller is construed to;
Carry out rasterization process with transferring to raster image processor after the file data decompression that is distributed to.
Preferably, after the described file data that is distributed to decompressed in buffer memory, raster image processor file data to described decompression in buffer memory carried out rasterization process.
Preferably, described raster image processing controller is by the first network interface card transfer files data, and described raster image processing controller obtains the printing descriptive language data of external transmission by second network interface card.
Preferably, further comprise the steps:
Described raster image processing controller when file data transfers to a plurality of raster image processor, is coordinated data sequential delivery between described raster image processing controller and the described raster image processor by transmission control protocol.
Preferably, further comprise the steps:
When detecting described raster image processor and be one, after described raster image processing controller will be printed descriptive language and be construed to file data, transfer to described raster image processor by transmission control protocol and carry out rasterization process.
Beneficial effect of the present invention is as follows:
Because the present invention has utilized User Datagram Protoco (UDP) (User Data Protocol, UDP) characteristics that transmission speed is fast, resource occupying is few, and utilize these characteristics that the file data of printing after descriptive language is explained is transmitted, thereby effectively raise the acquisition speed of RIP system to the processing operation data source, improve the processing speed of distributed RIP system, satisfied the requirement of flying print output device.
Characteristics based on the UDP transmission, make the present invention have very big dirigibility, when along with raising to distributed RIP bulk treatment rate request, in system, dynamically increase new RIP machine, during the processing power of increase system, use the present invention can guarantee that data rate can not reduce along with the increase of distributed RIP system scale.
In the preferred version, the present invention has adopted and has utilized Transmission Control Protocol to come feedback to accept the feedback mechanism of file data loss situation, utilized UDP transmission fast, take resource few in, utilized the reliability of TCP, thereby guaranteed the reliability of file transfer.
In the preferred version, the present invention is transmitted after the file data that transmits is compressed again, has reduced the bandwidth occupancy of data transmission, and need carry out data quantity transmitted, has further improved transmission speed.
In the preferred version, the file data of the present invention after decompression put into buffer area, and disk buffering is no longer carried out in the directly reading of data line raster processing of going forward side by side in buffer memory of RIP device, from and improved treatment effeciency further.
In the preferred version, the present invention to the file transfer control of shaking hands, has guaranteed the synchronized relation between the operation pages different in the operation by TCP, makes the page transmit in an orderly manner.
In the preferred version, externally use different network interface cards to be connected between system and RIP controller, RIP controller and the RIP device, thereby avoided the utilization of external data, guaranteed the speed of internal data transfer the inner network bandwidth.
In the preferred version, adopt the present invention can be according to the channel pattern of the scale automatic switchover internal data transfer of distributed RIP system, thereby guarantee the overall treatment efficiency of distributed RIP system, reduced the intermediate file data in different RIP because Network Transmission is brought is time loss.Guaranteed that distributed RIP system is connecting the real-time requirement of flying print output device to the RIP processing speed.
Description of drawings
Fig. 1 is a stream data transmission synoptic diagram of the present invention described in the embodiment;
Fig. 2 is a data transmission flow process synoptic diagram of the present invention described in the embodiment;
Fig. 3 is another synoptic diagram of data transmission flow process of the present invention described in the embodiment;
Fig. 4 is the distributed RIP data transmission system of the present invention described in an embodiment structural representation;
Fig. 5 is the distributed RIP data transmission method of the present invention described in an embodiment schematic flow sheet.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
It below is principle explanation of the invention process, Fig. 1 is a stream data transmission synoptic diagram of the present invention, as shown in the figure, print job data stream explains that by the RIP controller back forms intermediate file stream, through being distributed to corresponding RIP device behind the internal subnet of distributed structure, the RIP device forms after to middle file rasterisation and transfers to the flying print output device after the grating lattice data and print.
Fig. 2 is a data transmission flow process synoptic diagram of the present invention, and as shown in the figure, key step is during data transmission of the present invention:
Step 201, initialize data transfer module, the RIP controller receives operation, and operation is made an explanation;
Step 202, RIP controller send the operation correlation parameter to the RIP device, and the RIP device receives the operation correlation parameter, according to the job parameter initialization;
Step 203, RIP controller obtain page intermediate file data after explaining, page correlation parameter is sent to the RIP device, and the RIP device receives page correlation parameter;
Step 204, RIP controller send page intermediate file data, and the RIP device receives compressed page intermediate file data;
Step 205, RIP controller wait for whether the feedback affirmation needs to retransmit, and when feedback information need be retransmitted, changes step 206 over to, when not needing to retransmit, changes step 209 over to;
Step 206, resend the packet of losing according to feedback information;
Whether step 207, RIP device verification page data bag be complete, if wrap imperfectly, forwards step 205 feedback RIP controller to and retransmit, if wrap the complete step 208 that changes over to;
After step 208, RIP device decompression intermediate data carried out rasterization process, the output dot matrix data were to high-speed equipment;
Step 209, RIP controller operation processing finish, and obtain the next print job that needs processing.
Be better explanation the present invention, Fig. 3 is another synoptic diagram of data transmission flow process of the present invention, and this figure is that object is described with RIP controller and RIP device respectively.
Particularly, at first be that the RIP controller obtains required print job to be processed from external system in the invention process, on the RIP controller, print job is made an explanation, explain that the back generates the intermediate file data stream, the intermediate file data stream will be compressed processing automatically to reduce the bandwidth occupancy of data transmission.Data stream after the compression is kept in the Installed System Memory buffering.This moment, the RIP controller determined employed data transmission module automatically according to the number of the current RIP device that disposes.When RIP device number was one, data transmission module automatically switched to the TCP transport module, when the RIP device outnumber one the time, automatically switch to reliable multicast UDP transport module.The gigabit subnet of the intermediate file data stream of compression by inside is sent on all RIP devices that are connected internal subnet with mode or the reliable multicast UDP mode of TCP.
When the RIP controller is explained operation, can be delivered to the RIP device to the relevant parameter of operation by the Data Control module earlier, the RIP device carries out initialization according to the operation correlation parameter to receiving data procedures.Before the page data that sends compression, the RIP controller sends to the RIP device to the relevant parameter of the page by the Data Control module, and the RIP device carries out initialization according to these parameters to the receiving course of the page.
When if system switches to the reliable multicast transmission mode, after transmission finishes page intermediate data, can confirm the validity of the packet that sends by feedback mechanism.The validity of the packet that the RIP controller can be obtained according to the RIP device to losing or invalid data packets resends, rather than resends all packets.After all packets all send success, then can continue the process of transmitting of next page data.
All intermediate file data stream of each print job are as the full unit of a transmission.Wherein the intermediate file data stream of each page in the operation is as the least unit of transmission.All RIP devices all receive identical intermediary data stream, and according to the job parameter of appointment the different piece of middle data stream are handled, thereby reach the purpose of parallel processing.
On the RIP device, according to the distribution situation of the RIP device of distributed RIP system, the RIP device is judged employed data reception module automatically.The RIP device at first obtains the correlation parameter of entire job by the Data Control passage, corresponding initialization operation is done in the reception of middle data stream.Before receiving page compression intermediate data, also need to obtain the relevant parameter of the page, to the initialization of page receiving course.
When if system automatically switches to multicast UDP message pattern, behind receiving compressed data, the inspection of advanced line data bag validity, when existing packet invalid or lose, need notify RIP controller by feedback mechanism, resend and lose or invalid data packets, till all packets all receive in the page.According to specified job parameter, above process constantly repeats, and disposes up to operation.
The data that receive are put into after decompression in the Installed System Memory buffer zone, directly carry out rasterization process by the RIP device, with the speed that guarantees to handle.Dot array data behind the grating can directly output on the outside flying print output device that connects.
Use method of the present invention, can on the basis of the basic structure of original distributed RIP system, improve the data-transmission mode between the RIP, by using the data transmission module that automaticallyes switch, can guarantee that the bulk treatment speed of system can satisfy the real-time output requirement of more and more faster flying print output device.Along with the rate request of flying print output device, only need to increase the number of RIP device, and can not reduce the speed that the RIP device obtains the intermediate file data.Increased the dirigibility of distributed RIP system applies.
Based on above design, below distributed RIP data transmission system of the present invention is carried out implementation, Fig. 4 is the distributed RIP data transmission system of a present invention structural representation, as shown in the figure, include in the system: RIP controller 401, first data transmission module 402, RIP device 403, wherein the RIP device can have somely, only describes with one work wherein in the enforcement.
In preferred the enforcement, also comprise in the RIP controller in the native system comprising in compression unit 4011, the RIP device outside record cell 4031, decompression unit 4032, the buffer memory 4033, also can comprise feedback device 404, handover module 405, second data transmission module 406, Data Control module 407 in the system.
In the system, each module can be connected in the following manner with the unit:
Again how each module in the system is specifically implemented to describe to solve the technology of the present invention problem below.
First data transmission module is distributed to the RIP device by UDP and carries out rasterization process after the RIP controller will be printed descriptive language and be construed to file data.RIP controller and a plurality of RIP device that prints the operation rasterisation in the distributed system.The RIP controller is responsible for print job is made an explanation, and uses first data transmission module that the data content of the intermediate file after explaining is distributed.The RIP device uses data transmission module to receive the intermediate file data of RIP controller distribution, after the reception data it is carried out rasterization process.In preferred the enforcement, use the tcp data control module synchro control of shaking hands in the data transmission procedure, to guarantee the orderly transmission of operation page data.
In preferred the enforcement, recording unit records RIP controller does not send successful file data information, to the RIP controller, the RIP controller sends file data by first data transmission module by the information of feedback to feedback device once more with the information feedback of corresponding RIP device recording unit records.Feedback device is by transmission control protocol transmission data.In the system, first data transmission module that transmits with the UDP of reliable multicast is based on the UDP host-host protocol, and UDP is insecure host-host protocol, and transmission speed is faster than Transmission Control Protocol, and is few to taking of Internet resources.Use UDP to carry out multicast transmission, for the reliability that guarantees to transmit, the RIP controller needs and the RIP device is safeguarded reliable back channel.Whether the data that the recording unit records RIP controller on the RIP device is sended over are successful.After if the RIP controller sends end of data block, the RIP device tells which bag in the RIP controller data piece not send successfully by feedback device, and the RIP controller is only retransmitted the bag that sends failure according to the result of feedback.All intermediate file data of each print job are as a unit of transfer that finishes, and the intermediate file data of each page in the print job are the least unit of transmission.TCP is transmitted as reliable transmission, does not need feedback to guarantee to transmit the success of data, therefore preferred in, the tcp data control module is used for controlling RIP controller and the synchronized relation of RIP device between the page of transmission operation, operation.
In preferred the enforcement, after can also compressing by the file data that compression unit in the RIP controller is construed to the RIP controller, by the distribution of first data transmission module, transfer to the RIP device after the decompression unit in the RIP device decompresses the file data that is distributed to and carry out rasterization process.Can also further preferably be embodied as, comprise buffer memory, decompression unit decompresses the file data that is distributed in buffer memory after, the RIP device carries out rasterization process to the file data that decompresses in buffer memory.Just the RIP controller is used to receive outside print processing operation, and be responsible for print job is made an explanation, intermediate file data after the explanation are compressed, to be transferred to the RIP device by exporting first data transmission module then, the RIP device decompresses to receiving data, and the data of decompression will be put in the core buffer, and the RIP device directly carries out rasterization process to the intermediate file data after decompressing, no longer carry out disk buffering, to improve treatment effeciency.
In preferred the enforcement, the RIP controller and first data transmission module are by the first network interface card transfer files data, and the RIP controller obtains the printing descriptive language data of external transmission by second network interface card.In the enforcement, the RIP controller can use two PCI-Express, one road network card is connected with external system, an other road network cartoon crosses gigabit switch and a plurality of RIP device is formed independently internal subnet, to avoid external network data, guarantee the speed of data transmission in the internal subnet to the taking of the inner network bandwidth.Just between RIP control, use two PCI-Express, guarantee that internal subnet only is used for the transmission of intermediate file data and the transmission of internal data control command.
In preferred the enforcement, when handover module detects the RIP device and is one, file data is switched to the transmission of second data transmission module; Second data transmission module transfers to the RIP device by TCP and carries out rasterization process after the RIP controller will be printed descriptive language and be construed to file data.System is according to the number of RIP device in the system employed data transmission module that automaticallyes switch, because when the number of RIP device is one, use the TCP transmission, the transmission mode of TCP is a reliable transmission, do not need feedback device to guarantee reliability of data transmission, do not have the shared path overhead of feedback device between RIP controller and the RIP device this moment, makes that like this data transmission efficiency is the highest.When RIP device number automatically switches to reliable multicast UDP transport module at one when above, come the reliability of service data transmission by the feedback mechanism of setting up between RIP controller and the RIP device.When the RIP device outnumber one the time, this data transfer mode efficient will be higher than the TCP transmission mode, and along with the increase of RIP device number, based on the characteristic of udp protocol, makes the performance of this data transfer mode of the present invention can not descend.
Based on above design, the present invention also provides the method for distributed RIP data transmission, below distributed RIP data transmission method of the present invention is carried out implementation, Fig. 5 is the distributed RIP data transmission method of a present invention schematic flow sheet, as shown in the figure, when data transmission, can comprise the steps:
RIP controller and a plurality of RIP device that prints the operation rasterisation in the distributed system.The RIP controller is responsible for print job is made an explanation, and uses udp protocol that the data content of the intermediate file after explaining is distributed.The RIP device receives the intermediate file data of RIP controller distribution, after the reception data it is carried out rasterization process.In preferred the enforcement, can use the tcp data control module synchro control of shaking hands in the data transmission procedure, to guarantee the orderly transmission of operation page data.
In step 503 with the information feedback of the record of corresponding RIP device to the RIP controller by the TCP feedback.
Record RIP controller does not send successful file data information, and to the RIP controller, the RIP controller sends file data once more by the information of feedback with the information feedback of corresponding RIP device record.Transmit to be based on the UDP host-host protocol with the UDP of reliable multicast, UDP is insecure host-host protocol, and transmission speed is faster than Transmission Control Protocol, few to taking of Internet resources.Use UDP to carry out multicast transmission, for the reliability that guarantees to transmit, the RIP controller needs and the RIP device is safeguarded reliable back channel.Whether the data that RIP device record RIP controller is sended over are successful.After if the RIP controller sends end of data block, the feedback of RIP machine tells which bag in the RIP controller data piece not send successfully, and the RIP controller is only retransmitted the bag that sends failure according to the result of feedback.All intermediate file data of each print job are as a unit of transfer that finishes, and the intermediate file data of each page in the print job are the least unit of transmission.TCP is transmitted as reliable transmission, does not need feedback to guarantee to transmit the success of data, therefore preferred in, can control synchronized relation between the RIP controller and the page of RIP device in transmission operation, operation with TCP.
In preferred the enforcement, in step 501, distribute after the file data compression that the RIP controller can be construed to, transfer to the RIP device after then the file data that is distributed to being decompressed and carry out rasterization process.
After further the described file data that is distributed to can also being decompressed in buffer memory, the RIP device carries out rasterization process to the file data that decompresses in buffer memory.
After the file data that is distributed to decompressed in buffer memory, the RIP device carried out rasterization process to the file data that decompresses in buffer memory.Just the RIP controller is used to receive outside print processing operation, and be responsible for print job is made an explanation, intermediate file data after the explanation are compressed, be transferred to the RIP device then, the RIP device decompresses to receiving data, and the data of decompression will be put in the core buffer, and the RIP device directly carries out rasterization process to the intermediate file data after decompressing, no longer carry out disk buffering, to improve treatment effeciency.
In preferred the enforcement, the RIP controller is by the first network interface card transfer files data, and the RIP controller obtains the printing descriptive language data of external transmission by second network interface card.
The RIP controller is by the first network interface card transfer files data, and the RIP controller obtains the printing descriptive language data of external transmission by second network interface card.In the enforcement, the RIP controller can use two PCI-Express, one road network card is connected with external system, an other road network cartoon crosses gigabit switch and a plurality of RIP device is formed independently internal subnet, to avoid external network data, guarantee the speed of data transmission in the internal subnet to the taking of the inner network bandwidth.Just between RIP control, use two PCI-Express, guarantee that internal subnet only is used for the transmission of intermediate file data and the transmission of internal data control command.
In preferred the enforcement, in step 501, when detecting the RIP device and be one, after the RIP controller will be printed descriptive language and be construed to file data, transfer to the RIP device by Transmission Control Protocol and carry out rasterization process.
When handover module detects the RIP device and is one, after the RIP controller will be printed descriptive language and be construed to file data, transfer to the RIP device by TCP and carry out rasterization process.According to the number of the RIP device employed Data Transport Protocol that automaticallyes switch, because when the number of RIP device is one, use the TCP transmission, the transmission mode of TCP is a reliable transmission, do not need feedback device to guarantee reliability of data transmission, do not have the shared path overhead of feedback mechanism between RIP controller and the RIP device this moment, makes that like this data transmission efficiency is the highest.When RIP device number automatically switches to reliable multicast UDP transmission at one when above, come the reliability of service data transmission by the feedback mechanism of setting up between RIP controller and the RIP device.When the RIP device outnumber one the time, this data transfer mode efficient will be higher than the TCP transmission mode, and along with the increase of RIP device number, based on the characteristic of udp protocol, makes the performance of this data transfer mode of the present invention can not descend.
Use method of the present invention, can on the basis of the basic structure of original distributed RIP system, improve the data-transmission mode between the RIP, by using the data transmission module that automaticallyes switch, can guarantee that the bulk treatment speed of system can satisfy the real-time output requirement of more and more faster flying print output device.Along with the rate request of flying print output device, only need to increase the number of RIP device, and can not reduce the speed that the RIP device obtains the intermediate file data, increased the dirigibility of distributed RIP system applies.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. the data transmission system handled of a distributed optical grating picture, comprise raster image processing controller, a plurality of raster image processor, it is characterized in that, also comprise first data transmission module, the raster image processing controller links to each other with a plurality of raster image processors by described first data transmission module, described first data transmission module is distributed to described raster image processor by User Datagram Protoco (UDP) and carries out rasterization process after described raster image processing controller will be printed descriptive language and be construed to file data.
2. the system as claimed in claim 1, it is characterized in that, further comprise at least one feedback device, described feedback device links to each other with corresponding described raster image processor, be used for the information feedback of the received file data of corresponding raster image processor to described raster image processing controller, described raster image processing controller sends file data according to the information of described feedback by described first data transmission module.
3. system as claimed in claim 2 is characterized in that described raster image processor further comprises record cell, is used to write down described raster image processing controller and does not send successful file data information;
Described feedback device links to each other with corresponding described raster image processor, be used for information feedback with the described recording unit records of corresponding raster image processor to described raster image processing controller, described raster image processing controller sends file data by the information of described feedback by described first data transmission module.
4. as claim 2 or 3 described systems, it is characterized in that described feedback device is the feedback device by transmission control protocol transmission data.
5. the system as claimed in claim 1 is characterized in that, described raster image processing controller further comprises compression unit, and described raster image processor further comprises decompression unit, wherein:
After the file data that described compression unit is construed to the raster image processing controller compresses,, transfer to raster image processor after described decompression unit decompresses the file data that is distributed to and carry out rasterization process by described first data transmission module distribution.
6. system as claimed in claim 5 is characterized in that, comprises buffer memory, and described decompression unit decompresses the file data that is distributed in buffer memory after, raster image processor file data to described decompression in buffer memory carries out rasterization process.
7. the system as claimed in claim 1, it is characterized in that, further comprise first network interface card, second network interface card, described raster image processing controller and described first data transmission module are by the first network interface card transfer files data, and described raster image processing controller obtains the printing descriptive language data of external transmission by second network interface card.
8. the system as claimed in claim 1, it is characterized in that, further comprise the Data Control module, link to each other with a plurality of raster image processors with described raster image processing controller, be used for coordinating data sequential delivery between described raster image processing controller and the described raster image processor by transmission control protocol.
9. the system as claimed in claim 1 is characterized in that, further comprises second data transmission module, handover module, wherein:
Handover module links to each other with described raster image processing controller, second data transmission module, is used for when detecting described raster image processor and be one, and file data is switched to the transmission of second data transmission module;
Second data transmission module, link to each other with described raster image processing controller, raster image processor, be used for after described raster image processing controller will be printed descriptive language and be construed to file data, transferring to described raster image processor by transmission control protocol and carrying out rasterization process.
10. the data transmission method that distributed optical grating picture is handled is characterized in that, comprises the steps:
After the raster image processing controller will be printed descriptive language and be construed to file data, be distributed to raster image processor by User Datagram Protoco (UDP) and carry out rasterization process.
11. method as claimed in claim 10 is characterized in that, further comprises the steps:
To described raster image processing controller, described raster image processing controller sends file data according to the information of described feedback with the information feedback of the received file data of corresponding raster image processor.
12. method as claimed in claim 11 is characterized in that, further comprises the steps:
Write down described raster image processing controller and do not send successful file data information;
To described raster image processing controller, described raster image processing controller sends file data by the information of described feedback with the information feedback of the described record of corresponding raster image processor.
13., it is characterized in that the information feedback of described described record with corresponding raster image processor is to described raster image processing controller, by the transmission control protocol feedback as claim 11 or 12 described methods.
14. method as claimed in claim 10 is characterized in that, further comprises the steps:
Distribute after the file data compression that described raster image processing controller is construed to;
Carry out rasterization process with transferring to raster image processor after the file data decompression that is distributed to.
15. method as claimed in claim 14 is characterized in that, after the described file data that is distributed to was decompressed in buffer memory, raster image processor file data to described decompression in buffer memory carried out rasterization process.
16. method as claimed in claim 10 is characterized in that, described raster image processing controller is by the first network interface card transfer files data, and described raster image processing controller obtains the printing descriptive language data of external transmission by second network interface card.
17. method as claimed in claim 10 is characterized in that, further comprises the steps:
Described raster image processing controller when file data transfers to a plurality of raster image processor, is coordinated data sequential delivery between described raster image processing controller and the described raster image processor by transmission control protocol.
18. method as claimed in claim 10 is characterized in that, further comprises the steps:
When detecting described raster image processor and be one, after described raster image processing controller will be printed descriptive language and be construed to file data, transfer to described raster image processor by transmission control protocol and carry out rasterization process.
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| CNB2006101125669A CN100527069C (en) | 2006-08-23 | 2006-08-23 | Data transmission system and method for distributed optical grating picture processing |
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