CN101527002B - Method for processing digital printing data and device thereof - Google Patents
Method for processing digital printing data and device thereof Download PDFInfo
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- CN101527002B CN101527002B CN2009100802726A CN200910080272A CN101527002B CN 101527002 B CN101527002 B CN 101527002B CN 2009100802726 A CN2009100802726 A CN 2009100802726A CN 200910080272 A CN200910080272 A CN 200910080272A CN 101527002 B CN101527002 B CN 101527002B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 title claims abstract description 16
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Abstract
The invention provides a method for processing digital printing data and a device thereof used for solving the problem that the digital printing speed is slow. The embodiment explains a data processing method which splits and obtains a data segment corresponding to an imaging component from data according to the corresponding relation between the data required for printing a line of pixel and an imaging component set. After splitting and obtaining the data segment, the method splits and distributes the serial data to a corresponding imaging unit according to set resolution. The technical proposal of the embodiment of the invention can quicken the data processing speed, thereby improving the work efficiency of printing equipment.
Description
Technical field
The present invention relates to digital printing technology field, relate to a kind of method and apparatus of processing digital printing data especially.
Background technology
The digital printing technology has obtained develop rapidly with cost advantage and the dirigibility greatly that it has competitive power in recent years.It adopts the mode that data are directly transmitted, handle, printed.Compare with traditional mode of printing, a series of loaded down with trivial details processes such as digital printing saved plate-making, draw a design make whole printing-flow simplify extremely to the greatest extent and quick, and support variable data is printed simultaneously, has therefore had the unrivaled superiority of traditional printing.
According to the difference of ink-jetting style, digital printing equipment is divided into two kinds: continous inkjet formula and drop on demand ink jet formula.For the digital printing equipment that adopts drop on demand ink jet formula image-forming block, when the surface of the body of undertaking the printing of (as paper) arrives print position, piezoelectric crystal in the image-generating unit produces pulse printing ink is extruded, and directly obtains a pixel to the vaporific ink droplet imaging of the jet surface of the body of undertaking the printing of (as paper).During digital printing, will determine that earlier the required data form computer of print content is transferred to each image-generating unit buffer memory of image-forming block.Print the required data of one-row pixels and be called line data again, its bit wide is determined by the fabric width of needs printing.Each image-generating unit desired data bit wide depends on the printing equipment model and immobilizes.
Improve printed resolution, generally adopt the mode of image-forming block stack, several image-forming blocks that we define stack are an image-forming block group.The number of image-forming block is identical in each image-forming block group, and this number has determined the highest printed resolution of printing equipment.When increasing fabric width, can adopt the splicing of image-forming block group, also can adopt the reciprocating mode of image-forming block group to realize.Present digital printing equipment is divided into two kinds of many PASS and single PASS according to image-forming block and the relative motion mode of body of undertaking the printing of.The digital printing equipment of many PASS is meant that the body of undertaking the printing of is motionless, and the image-forming block to-and-fro movement increases to the fabric width of picture with this.Single PASS digital printing equipment is meant that image-forming block is motionless, and the body of undertaking the printing of moves with respect to image-forming block.Fig. 1 shows image-forming block mounting means in single PASS digital printing equipment.The image-forming block group has been shown among Fig. 1, for example is No. 1 image-forming block group in the frame of broken lines; And show image-forming block, for example rectangle 1,2.Also show the image-generating unit in the image-forming block group among Fig. 1, the stain in the rectangle 1,2 for example, the image-generating unit number in each image-forming block is identical.A plurality of image-forming block groups are arranged along the fabric width direction of the body of undertaking the printing of, and the number of the image-forming block group of employing has determined the maximum fabric width that printing equipment can be printed.When the fabric width of required printing during, select the continuous image-forming block group of a part to print less than this maximum fabric width.Equally when the resolution that needs to print during less than the highest resolution of printing equipment, select a part of continuous image-forming block to print in each image-forming block group, the image-forming block number of selecting in each image-forming block group is identical.
In the prior printing equipment, print the required data of every capable pixel and be with serial order successively to the transmission of image-forming block group and be stored in the buffer memory of each image-generating unit in the image-forming block group, higher or print fabric width when big when resolution, it is also bigger to print every capable pixel desired data bit wide, correspondingly time of needing of this data transmission longer, thereby influenced the print speed printing speed of printing equipment.
Summary of the invention
The invention provides a kind of method and apparatus of processing digital printing data, to solve the slower problem of print speed printing speed of printing equipment in the prior art.
A kind of processing digital printing data method in the embodiment of the invention comprises:
According to the corresponding relation of printing one-row pixels desired data and image-forming block group, from described data, split the data segment that obtains corresponding to the image-forming block group; The described fractionation from described data obtains comprising corresponding to the data segment of image-forming block group: will print the one-row pixels desired data and split the data segment that obtains corresponding to the image-forming block group, the bit wide of data segment equals the bit wide of the image-forming block group of this data segment correspondence; Or, be split as data section with printing the one-row pixels desired data corresponding to the image-forming block group; Zero padding obtains the data segment corresponding to the image-forming block group to data section, the bit wide of data section zero padding is equaled the bit wide sum of the invalid image-generating unit of image-forming block group of this data section correspondence;
After fractionation obtained described data segment, the described data segment that fractionation is obtained was according to the clock frequency of setting, and the data segment of each image-forming block group correspondence is converted to the high speed serialization bit stream;
Data segment is split and be assigned to corresponding image-generating unit according to the resolution of setting, specifically comprise: described high speed serialization bit stream is split and is assigned to corresponding image-generating unit; Or, described high speed serialization bit stream is deposited in the memory buffer of corresponding image-generating unit respectively in the precedence of resolution direction according to image-generating unit.
A kind of processing digital printing data device in the embodiment of the invention comprises:
Section splits module, is used for according to the corresponding relation of printing one-row pixels desired data and image-forming block group, splits the data segment that obtains corresponding to the image-forming block group from described data; Described section splits module and comprise: the merogenesis unit is used for being split as data section corresponding to the image-forming block group with printing the one-row pixels desired data; The zero padding unit is used for to data section zero padding and obtains data segment corresponding to the image-forming block group, the bit wide of data section zero padding is equaled the bit wide sum of the invalid image-generating unit of image-forming block group of this data section correspondence;
Resolution splits module, is used for after fractionation obtains described data segment, and the described data segment that fractionation is obtained according to the resolution of setting splits and be assigned to corresponding image-generating unit; Described resolution splits module and comprises: the bit stream generation unit, be used for according to the clock frequency of setting, and the data segment of image-forming block group correspondence is converted to the high speed serialization bit stream; The resolution split cells is used for described high speed serialization bit stream is deposited in respectively in the precedence of resolution direction according to image-generating unit the memory buffer of corresponding image-generating unit.
Technical scheme according to the embodiment of the invention, data are first number and bit wide segmentation according to the image-forming block group before entering the buffer memory of image-generating unit, to this serial data be split the buffer memory that deposits image-generating unit in according to the resolution of setting after each data segment and the string conversion again, improved the transfer efficiency of data thus, thereby accelerated the print speed printing speed of printing equipment, and realized that the data of arbitrary resolution split.
Description of drawings
Fig. 1 is the synoptic diagram of image-forming block mounting means in single PASS digital printing equipment;
Fig. 2 is a method flow diagram in the embodiment of the invention;
Fig. 3 is the storage unit synoptic diagram of the buffer storage of memory paragraph data in the embodiment of the invention;
Fig. 4 is the device synoptic diagram that control resolution splits in the embodiment of the invention;
Fig. 5 is a data processing equipment structural representation in the embodiment of the invention.
Embodiment
In order to improve the speed of processing digital printing data, in the embodiment of the invention, to print line data that need earlier and carry out segmentation, and again each segment data be carried out and go here and there to change then splitting to each image-generating unit according to the resolution of setting according to the bit wide of the image-forming block group that participates in printing.Also with reference to device synoptic diagram shown in Figure 1, the method in the embodiment of the invention is specific as follows as shown in Figure 2:
Step 21: be provided with and print required parameter.These parameters specify as follows: the actual number S that determines the image-forming block group of participation printing according to fabric width; Resolution as required determines to participate in each image-forming block group the number M of the image-forming block of printing, and the M value of each image-forming block group is identical; Determine effective image-generating unit number in each image-forming block according to the installment state of image-forming block group, because participate in total k=M * S image-forming block of printing, so the effective image-generating unit number in the image-forming block is respectively N1, N2......Nk.
Under regard to effective image-generating unit number and be described further.In Fig. 1 as can be seen, the image-forming block of each image-forming block group is step-like arrangement, so when the imaging part count increases, the pixel that the image-generating unit of the image-generating unit of the below of image-forming block group and the right adjacent image-forming block group top is printed can overlap, phenomenon for fear of this overstriking, can only select this moment an image-generating unit actual participation among the image-generating unit of overstriking to print, all the other image-generating units of overstriking are invalid image-generating unit.After the installation of image-forming block group, the image-generating unit number of overstriking also is a determined value between the adjacent image-forming block group, but between two adjacent image-forming block groups between two adjacent image-forming block groups of image-generating unit number and other of overstriking the image-generating unit number of overstriking not necessarily identical.After selected effective image-generating unit and the invalid image-generating unit, above-mentioned N1-Nk value is also determined in the image-generating unit of having selected overstriking.
Numerical value M, S and N1-Nk are stored in the initialization register of printing equipment control device.
Step 22: the control device of printing equipment receives and is used for the required dot array data of print pixel.The data line of this dot array data is used to print a line pixel, and with the serial mode transmission, below this data line is called the line data.In the line data storage data cache line, can use asynchronous first-in first-out buffer storage as the line metadata cache.Step 21 and step 22 do not limit precedence to carry out.
Step 23: with the bit wide of line data by imaging parts group, segmentation deposits in the segment data buffer memory.The line data are by segmentation in this step, when generating, determined its position because print required data, promptly determined the corresponding relation of itself and image-forming block group, so the bit wide of the data segment after the segmentation just equals the bit wide of the pairing image-forming block group of data in this data segment.
Fig. 3 is the storage unit synoptic diagram of the buffer storage of memory paragraph data, wherein each grid is represented a storage unit, each row grid is represented a cell group, for example shown in the round rectangle 34, the bit wide sum that its capacity equals the image-generating unit of an image-forming block group is its total bit wide 31, and total bit wide of each image-forming block group all is that the product of the bit wide of the number of image-generating unit among the number M, each image-forming block according to image-forming block and each image-generating unit desired data calculates and obtains.With in this step the line data are carried out segmentation, every section bit wide is total bit wide of image-forming block group.Also show the actual use bit wide 32 and the zero padding bit wide 33 of this image-forming block group among the figure.
Form data segment in the process that the line data is deposited in the segment data buffer memory, each data segment is corresponding to an image-forming block group, and the bit wide of data segment is identical with total bit wide of its corresponding image-forming block group.The line data are being deposited in the process of segment data buffer memory, using segment counter and section width counter to control, concrete storage organization signal with reference to segment data buffer memory shown in Figure 3.Cell group 34 is used to store the data of No. 1 image-forming block group 1, insert successively from storage unit 35 beginnings, this moment, the segment counter count value was 1, the maximal value of Duan Kuandu counter is determined according to the value of present segment counter, for example be 1 according to the segment counter value this moment, and the maximal value of the section of obtaining width counter is effective bit wide of No. 1 image-forming block group.Effective bit wide of image-forming block group is all effective image-generating unit desired data bit wide sums in this image-forming block group.In the process that data are inserted, the Duan Kuandu counter is counted, when data are inserted storage unit 36, Duan Kuandu counter institute count value arrives effective bit wide of No. 1 image-forming block group, this period width gauge is counted device and is produced control signal A by decoding, under the effect of control signal A, begin unused memory cell zero padding from storage unit 37 with cell group 34, zero padding is finished afterwards section width counter reset, restart counting, and segment counter numerical value is added 1, and the maximal value that this period width gauge is counted device is effective bit wide of No. 2 image-forming block group, begins to continue to insert the data of line metadata cache from storage unit 38.When the numerical value of segment counter equals numerical value S in the initialization register, print the required data of one-row pixels and finish with regard to segmentation.
In this step, after storage unit 37 begins the unused memory cell zero padding of cell group 34 finished, the data of cell group can be sent and deposit in the buffer memory of each image-generating unit to the image-forming block group, be following step 24, in this process, the above-mentioned step that begins to continue to insert data from storage unit 38 is also being carried out.This way makes the process of data sementation and data can carry out simultaneously to the process of image-generating unit transmission, has improved the line data and has arrived the speed of image-generating unit buffer memory, thereby can accelerate print speed printing speed.
Step 24: with the buffer memory of the data transmission in the segment data buffer memory to the image-forming block group.
Depositing a step of forming as the buffer memory of parts group in one piece of data below describes.Each data segment that obtains in step 23 all deposits in the buffer memory of image-forming block group in an identical manner.The device that uses Fig. 4 to provide in this step comes control resolution to split.It comprises image-forming block number register 41, image-generating unit number register 42, image-generating unit bit wide number register 43.The buffer memory of the image-forming block group that deposits in according to the current data needs, preserve the number M that this image-forming block group participates in the image-forming block of printing in the image-forming block number register 41, the number N of image-generating unit in each image-forming block in image-generating unit number register 42 these image-forming block groups of preservation, here the number that has comprised all image-generating units of image-generating unit parts, comprise effective image-generating unit and invalid image-generating unit, this number is the hardware attributes of image-generating unit.Preserve the bit wide numerical value P of each image-generating unit desired data in the image-generating unit bit wide number register 43, this numerical value is the hardware parameter of image-generating unit, is fixed value.Device among Fig. 4 also comprises image-forming block counter 44, image-generating unit counter group 45, bit wide counter 46, their maximum occurrences comes from above-mentioned register 41-43 respectively, wherein comprise S * M counter in the image-generating unit counter group, the maximum occurrences of each counter is respectively N1-Nk.
For one piece of data, can be converted to serial data and import successively again in the buffer memory of image-forming block group, specifically be to be stored in the buffer memory of each image-generating unit.When being converted to serial data, can use higher clock frequency, can access the high speed serialization bit stream like this, the print speed printing speed of speeding up data transmission speed, and then raising thus.With reference to figure 1, first image-generating unit begins to deposit in successively from left to right the buffer memory of image-generating unit to serial bit stream from a left side, or from the right side first image-generating unit begins to deposit in successively from right to left the buffer memory of image-generating unit, specifically depend on and go here and there the direction of serial data after the conversion.Below in conjunction with Fig. 1, with from a left side first image-generating unit to begin to deposit in be that example describes.On the resolution direction, a left side first image-generating unit is that first image-generating unit is played on the left side of No. 1 image-forming block group, first image-generating unit is played on the left side that it is the 2nd image-forming block that second image-generating unit played on a left side, the rest may be inferred, because each image-forming block group has M image-forming block, so first image-generating unit is played on the left side that to play M image-generating unit be M image-forming block group, a left side.Next second image-generating unit played on the left side that to play M+1 image-generating unit should be No. 1 image-forming block group, a left side, and the rest may be inferred for the order of all the other image-generating units.
Under above-mentioned counting mode, the concrete workflow that resolution splits is as follows: behind the system initialization, the P value of preserving in the image-generating unit bit wide number register 43 is written in the bit wide counter, the effective width register N1-Nk value of single image-forming block is written in the image-generating unit counter, effective image-forming block of each image-forming block group is counted M be loaded into the image-forming block counter.As previously described, after the segment data of an image-forming block group splits end, the bit wide counter, image-generating unit counter and image-forming block counter are all since 0 counting, at first fill first image-generating unit of first image-forming block, the bit wide counter begins counting, bit stream is read and is stored into the buffer memory of image-generating unit successively from the segment data buffer memory, after the bit wide counter count down to P and makes zero from 1, explanation has been finished storage to the buffer memory of this image-generating unit, this moment, the image-forming block counter added 1, begin to handle the next image-generating unit of this image-generating unit on the resolution direction, i.e. first image-generating unit of second image-forming block, the bit wide counter restarts counting, all the other tired according to this pushing away.After imaging component count device count down to M and makes zero from 1, the buffer memory that the 1st image-generating unit of an image-forming block of the M in the image-forming block group is described has obtained data, this moment, the image-generating unit counter added 1, the 2nd image-generating unit of the 2nd image-generating unit of first image-forming block, second image-forming block handled in beginning successively ..., the 2nd image-generating unit of a M image-forming block, move in circles according to this, after the image-generating unit counter count down to N and makes zero from 1, illustrate that the buffer memory of all image-generating units in this image-forming block group has all obtained data.The count value of image-forming block counter 44, image-generating unit counter group 45 and bit wide counter 46 is through decoder for decoding, controlled signal B, control signal B when maximum occurrences that three inputs of code translator 47 all are the corresponding counts devices indicates that the data corresponding to current image-forming block group have split and finishes, can print.For other image-forming block groups, the workflow that splits according to above-mentioned resolution is carried out equally.
After the workflow acquisition data that each image-forming block group all splits according to above-mentioned resolution, next be step 25: the image-forming block group is print pixel on the body of undertaking the printing of.
Understand the method in the embodiment of the invention above specifically,, provide a kind of data processing equipment below based on the method in the embodiment of the invention.As shown in Figure 5, data processing equipment 50 sections of comprising in the embodiment of the invention split module 51 and resolution splits module 52, its stage casing splits module 51 and is used for according to the corresponding relation of printing one-row pixels desired data and image-forming block group, splits the data segment that obtains corresponding to the image-forming block group from described data.Resolution splits module 52 and is used for after fractionation obtains described data segment, this serial data is split and is assigned to corresponding image-generating unit according to the resolution of setting.Can also comprise memory module 53 in addition, be used for printing the one-row pixels desired data by asynchronous first-in first-out pattern storage.
A kind of structure that section splits module 51 can be to comprise merogenesis unit and zero padding unit.The merogenesis unit is used for being split as data section corresponding to the image-forming block group with printing the one-row pixels desired data.The zero padding unit is used for to data section zero padding and obtains data segment corresponding to the image-forming block group, the bit wide of data section zero padding is equaled the bit wide sum of the invalid image-generating unit of image-forming block group of this data section correspondence.
A kind of structure that resolution splits module 52 can be to comprise bit stream generation unit and resolution split cells.The bit stream generation unit is used for according to the clock frequency of setting, the data segment of each image-forming block group correspondence is converted to the high speed serialization bit stream, and the resolution split cells is used for this high speed serialization bit stream is deposited in respectively in the precedence of resolution direction according to image-generating unit the memory buffer of corresponding image-generating unit.
Technical scheme according to the embodiment of the invention, data are first number and bit wide segmentation according to the image-forming block group before entering image-forming block, enter the buffer memory of image-forming block between each data segment in the mode of parallel transmission, accelerate processing speed of data thus, thereby improved the work efficiency of printing equipment.Provided the method and apparatus of handling line data in the embodiment of the invention, for each row pixel to be printed, processing mode is identical.By using asynchronous first-in first-out buffer memory, make Data Receiving and handle and independently to finish separately, both finished data reception, buffer memory, read, the sequential of having avoided the difference because of clock zone to cause again is satisfied.The transmission of data is to carry out under the control of the control signal A that exports in the section detachment device, the speed of having avoided data may occur in reading and handling problem such as do not match.Device in the embodiment of the invention can use logic control device and memory device to realize, also can use on-site programmable gate array FPGA (FieldProgrammable Gate Array) to finish.
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 (5)
1. the method for a processing digital printing data is characterized in that, comprising:
According to the corresponding relation of printing one-row pixels desired data and image-forming block group, from described data, split the data segment that obtains corresponding to the image-forming block group; The described fractionation from described data obtains comprising corresponding to the data segment of image-forming block group: will print the one-row pixels desired data and split the data segment that obtains corresponding to the image-forming block group, the bit wide of data segment equals the bit wide of the image-forming block group of this data segment correspondence; Or, be split as data section with printing the one-row pixels desired data corresponding to the image-forming block group; Zero padding obtains the data segment corresponding to the image-forming block group to data section, the bit wide of data section zero padding is equaled the bit wide sum of the invalid image-generating unit of image-forming block group of this data section correspondence;
After fractionation obtained described data segment, the described data segment that fractionation is obtained was according to the clock frequency of setting, and the data segment of each image-forming block group correspondence is converted to the high speed serialization bit stream;
Data segment is split and be assigned to corresponding image-generating unit according to the resolution of setting, specifically comprise: described high speed serialization bit stream is split and is assigned to corresponding image-generating unit; Or, described high speed serialization bit stream is deposited in the memory buffer of corresponding image-generating unit respectively in the precedence of resolution direction according to image-generating unit.
2. method according to claim 1 is characterized in that, describedly further comprises before described data are split as data segment corresponding to each image-forming block group: described printing one-row pixels desired data is stored in the asynchronous first-in first-out memory buffer.
3. method according to claim 1 is characterized in that, the bit wide of described data section corresponding to the image-forming block group equals the bit wide sum of the effective image-generating unit of image-forming block group of this data section correspondence.
4. a processing digital printing data device is characterized in that, the section of comprising splits module and resolution splits module, wherein,
Described section splits module, is used for according to the corresponding relation of printing one-row pixels desired data and image-forming block group, splits the data segment that obtains corresponding to the image-forming block group from described data; Described section splits module and comprise: the merogenesis unit is used for being split as data section corresponding to the image-forming block group with printing the one-row pixels desired data; The zero padding unit is used for to data section zero padding and obtains data segment corresponding to the image-forming block group, the bit wide of data section zero padding is equaled the bit wide sum of the invalid image-generating unit of image-forming block group of this data section correspondence;
Described resolution splits module, is used for after fractionation obtains described data segment, and the described data segment that fractionation is obtained according to the resolution of setting splits and be assigned to corresponding image-generating unit; Described resolution splits module and comprises: the bit stream generation unit, be used for according to the clock frequency of setting, and the data segment of image-forming block group correspondence is converted to the high speed serialization bit stream; The resolution split cells is used for described high speed serialization bit stream is deposited in respectively in the precedence of resolution direction according to image-generating unit the memory buffer of corresponding image-generating unit.
5. as device as described in the claim 4, it is characterized in that, further comprise memory module, be used for storing described printing one-row pixels desired data by asynchronous first-in first-out mode.
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Effective date of registration: 20110831 Address after: 100871 Beijing, Haidian District into the house road, founder of the building on the 9 floor, No. 298 Applicant after: Peking Founder Group Co., Ltd. Co-applicant after: Peking University Co-applicant after: Digital printing technology, Beijing Founder Electronics Co., Ltd. Address before: 100871 Beijing, Haidian District into the house road, founder of the building on the 9 floor, No. 298 Applicant before: Peking Founder Group Co., Ltd. Co-applicant before: Peking University Co-applicant before: Beida Fangzheng Electronics Co., Ltd., Beijing |
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Owner name: BEIJING UNIV. BEIDA FANGZHENG ELECTRONICS CO., LTD Free format text: FORMER OWNER: BEIJING UNIV. BEIJING FOUNDER DIGITAL PRINTING TECHNOLOGY CO., LTD. Effective date: 20120323 |
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Effective date of registration: 20120323 Address after: 100871 Beijing, Haidian District into the house road, founder of the building on the 9 floor, No. 298 Co-patentee after: Peking University Patentee after: Peking Founder Group Co., Ltd. Co-patentee after: Beida Fangzheng Electronics Co., Ltd., Beijing Address before: 100871 Beijing, Haidian District into the house road, founder of the building on the 9 floor, No. 298 Co-patentee before: Peking University Patentee before: Peking Founder Group Co., Ltd. Co-patentee before: Digital printing technology, Beijing Founder Electronics Co., Ltd. |
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Owner name: BEIJING UNIV. BEIJING FOUNDER YINJIE DIGITAL TECHN Free format text: FORMER OWNER: BEIJING UNIV. BEIDA FANGZHENG ELECTRONICS CO., LTD., BEIJING Effective date: 20120418 |
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Effective date of registration: 20120418 Address after: 100871 Beijing, Haidian District into the house road, founder of the building on the 9 floor, No. 298 Co-patentee after: Peking University Patentee after: Peking Founder Group Co., Ltd. Co-patentee after: Beijing Founderpod Digital Technology Co.,Ltd. Address before: 100871 Beijing, Haidian District into the house road, founder of the building on the 9 floor, No. 298 Co-patentee before: Peking University Patentee before: Peking Founder Group Co., Ltd. Co-patentee before: Beida Fangzheng Electronics Co., Ltd., Beijing |
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Granted publication date: 20111026 Termination date: 20190317 |
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