CN103885734B - A kind of inkjet printer head control panel and printable data transmission method - Google Patents
A kind of inkjet printer head control panel and printable data transmission method Download PDFInfo
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- CN103885734B CN103885734B CN201410129397.4A CN201410129397A CN103885734B CN 103885734 B CN103885734 B CN 103885734B CN 201410129397 A CN201410129397 A CN 201410129397A CN 103885734 B CN103885734 B CN 103885734B
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Abstract
The invention discloses a kind of inkjet printer head control panel and printable data transmission method, nozzle control panel one end connects master board, receive through the serial print data after treatment, the other end connects shower nozzle, errorless printable data will be verified and be sent to shower nozzle, nozzle control panel mainly includes FPGA, deserializer（DES）, CAN chip transmitting terminals（PHY）, power module and peripheral control interface unit, it is characterised in that a synchronous DRAM is set up on nozzle control panel（SDRAM）, SDRAM is connected with FPGA, and SDRAM and FPGA can carry out bidirectional data transfers, and SDRAM is used for storing and verifies errorless printable data through FPGA, and will finally verify errorless printable data and export at least one shower nozzle and be printed.SDRAM sets some subregions, number of partitions is consistent with printer head quantity, and verify errorless printable data needed for each subregion correspondence one shower nozzle of storage, the errorless printable data of verification that SDRAM will be stored during printing is sent to correspondence shower nozzle and carries out figure message printing, can avoid causing occur mistake when shower nozzle is transmitted in data after nozzle printing, nozzle control panel function is improved, air brushing efficiency is improved.
Description
Technical field
The present invention relates to a kind of inkjet printer head control panel and printable data transmission method, one kind is in particulard relate to
Increase synchronous DRAM（SDRAM）Inkjet printer head control panel and using SDRAM printable data pass
Transmission method.
Background technology
The process of printing of inkjet printer picture and text, will typically store in PC main frames as the view data of printing target
In, the view data includes image or text, and view data passes through raster image processing（RIP）It is by the image data transformation
The conversion data of printable form, the most printable data at last after RIP is transmitted to shower nozzle and carries out figure message printing.Nozzle control panel is
To the connector circuit board of shower nozzle, every kind of shower nozzle is required for the interface circuit of oneself to ink-jet printer control system, and its one end connects
Connect shower nozzle, other end connection master board.FPGA on nozzle control panel receives the serial print data that master board sends out,
And by processes such as treatment for shower nozzle provides print data, control signal and power drive signal.Ink-jet printer is in order to improve
Typically using multiple shower nozzle concurrent workings, multiple shower nozzles need substantial amounts of print data to print speed when working together, in shower nozzle
Moving of car can spray corresponding data to shower nozzle during correspondence position in relevant position, so between master board and nozzle control panel
The degree of accuracy of data transfer directly influences air brushing quality and air brushing efficiency, due to the memory limited memory in FPGA, it is impossible to
Whole printable datas are once stored, so while receiving new printable number during nozzle printing is sent to
According to, if transmitting procedure midway there is corrupt data, the inkjet printing picture and text and printing for having carried out will be directly influenced
Process.This process cannot prestore the errorless printable data of inspection, if error of the data in transmitting procedure, not only can
There is the possibility that ink, medium are wasted, improve air brushing cost, printing effect is affected.
The content of the invention
For problem above, first the errorless printable data of verification is prestored it is an object of the invention to provide a kind of
Storage and then inkjet printer head control panel and can beat that errorless printable information transfer to shower nozzle printed will be verified again
Print data transmission method.
To achieve the above object, the present invention proposes a kind of inkjet printer head control panel, and one end connection master board connects
Receive through the serial print data after treatment, the printable data for verifying errorless is sent to shower nozzle, shower nozzle by other end connection shower nozzle
Control panel mainly includes FPGA, deserializer（DES）, CAN chip transmitting terminals（PHY）, power module and peripheral control interface
Unit a, it is characterised in that synchronous DRAM is set up on nozzle control panel（SDRAM）, SDRAM is connected with FPGA,
SDRAM and FPGA can carry out bidirectional data transfers, and SDRAM is used for storing through the errorless printable data of FPGA verifications, and finally
The printable data for verifying errorless is exported at least one shower nozzle and is printed.
In above-mentioned inkjet printer head control panel, described SDRAM sets different subregions, number of partitions and printing
Machine shower nozzle quantity is identical, the errorless printable data of the verification needed for each subregion correspondence one shower nozzle of storage.
In above-mentioned inkjet printer head control panel, described DES is used for the serial print data conversion that will be received
Into parallel print data, and low-voltage differential signal is converted into single-ended signal.
In above-mentioned inkjet printer head control panel, described serial print data is by LVDS（Low voltage difference
Signal）Transmission line is to nozzle control panel.
In above-mentioned inkjet printer head control panel, described FPGA to being converted through DES after parallel print data
It is numbered missing verification and CRC（CRC check）.
In above-mentioned inkjet printer head control panel, it is anti-through CAN by PHY that described FPGA will verify report
Feed master board, if verification is wrong, master board resends serial print data to nozzle control panel；If verification is errorless,
Master board continues to send new serial print data to nozzle control panel.
The present invention proposes a kind of ink-jet printer printable data transmission method, it is characterised in that printable data is transmitted
The step of be specially：a）Master board will transmit the DES to nozzle control panel through the serial print data after treatment；b）Shower nozzle control
Serial print data is changed into parallel print data by the DES of making sheet, and parallel print data is transferred on nozzle control panel
FPGA；c）FPGA is verified to parallel print data, if parallel print data is wrong, is fed back wrong report and is notified master control
Making sheet resends serial print data and continues to verify；If parallel print data is errorless, errorless printable data is as verified,
The errorless printable data of verification is stored in the SDRAM of nozzle control panel, while feedback is errorless and reporting and notifying main control
Plate continues the new serial print data of transmission and is verified；d）Program sends print command, and SDRAM will verify errorless can print
Data are sent at least one shower nozzle and are printed.
In above-mentioned printable data transmission method, described step a）The middle serial print data through after treatment is passed through
LVDS transmission lines to nozzle control panel DES；The step c）In it is wrong report or it is errorless report pass through nozzle control panel
PHY feed back to master board through CAN.
The present invention sets up a SDRAM on nozzle control panel, and errorless printable data is verified through FPGA for storing,
SDRAM is divided into some subregions simultaneously, number of partitions is consistent with printer head quantity, and each subregion correspondence storage one
Errorless printable data is verified needed for shower nozzle, the errorless printable data of the verification that SDRAM will be stored is then forwarded to shower nozzle
Figure message printing is carried out, can avoid causing occur mistake when shower nozzle is transmitted in data after nozzle printing, improve nozzle control panel work(
Can, improve air brushing efficiency.When printing is started, programme-control sends print command, the verification nothing that will in advance have been accumulated in SDRAM
Printable data sends shower nozzle to by mistake, you can ensure that data are supplied in time.In print procedure, when printing picture and text do not cover completely
When covering whole print media situation, the gap of picture and text is not sprayed in shower nozzle, SDRAM can continue to storage and verify errorless can print
Data, accumulate more printable datas to improve efficiency of transmission.
Brief description of the drawings
Fig. 1 is the basic composition frame chart of data transfer model in the present invention；
Fig. 2 is the block diagram of the main dispensing unit of nozzle control panel in the embodiment of the present invention；
Fig. 3 is SDRAM internal zone dividings and the shower nozzle corresponding relation schematic diagram of nozzle control panel in the embodiment of the present invention；
Fig. 4 is the flow chart of nozzle control panel control print procedure in the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples pair
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, not
For limiting the present invention.
Fig. 1 is the basic composition frame chart of data transfer model in the present invention, and in data is activation, PC is visited by direct internal memory
Ask（Dma mode）Through raster image processing（RIP）Print data afterwards is sent to master board, and master board is PCIE plates,
Master board includes memory（SDRAM1）, programmable logic device（FPGA1）, transmitting terminal and receiving terminal, SDRAM1 will receive
RIP after print data be sent to the FPGA1 of master board, data processing is transferred to FPGA1 the transmission of master board again
End, parallel data is switched to serial data by transmitting terminal, while single-ended signal is converted into LVDS differential signals, it is serial after conversion
Print data is transmitted to the deserializer of printer head control panel through LVDS transmission lines（DES）, DES converts serial print data
It is parallel print data, and LVDS differential signals is converted into single-ended signal, then parallel print data is sent to shower nozzle control
In FPGA on plate, because parallel print data amount is huge, FPGA internal storages can not store whole parallel print datas,
FPGA is while receiving parallel print data, carrying out whether parallel print data transmits wrong verification；While will start to receive simultaneously
The errorless printable data of verification is sent to synchronous DRAM（SDRAM）In, with vacate space new in FPGA after
The parallel print data of new incoming is received and verified in continued access.Errorless can print is verified in the SDRAM and FPGA of nozzle control panel
Data can carry out transmitted in both directions.If the parallel print data of verification is wrong, wrong report is sent out in software control by CAN chips
Sending end（PHY）Printer master board is fed back to through CAN, master board resends serial print data to shower nozzle control
Plate is verified；If the parallel print data of verification is errorless, software control will pass through CAN chip transmitting terminals without error signal（PHY）
Printer master board is fed back to through CAN, master board continues new serial print data to the nozzle control panel of transmission and enters
Row verification.After program sends print command, the errorless printable data that verifies stored in the SDRAM of nozzle control panel spreads out of
Being transmitted to one or more shower nozzles again through FPGA carries out figure message printing.
Fig. 2 is the block diagram of the main dispensing unit of nozzle control panel in the embodiment of the present invention, and nozzle control panel is mainly configured
Unit includes FPGA, deserializer（DES）, CAN chip transmitting terminals（PHY）, SDRAM, power module and peripheral control interface
Unit.Serial print data after treatment is sent to shower nozzle control by master board with LVDS differential signalling forms through LVDS transmission lines
The serial print data of reception is changed into parallel print data, is turned by LVDS differential signals by making sheet, the DES on nozzle control panel
Chemical conversion single-ended signal；FPGA is used to receive the parallel print data after being converted through DES, and parallel print data is deposited temporarily
Storage and verification, so that for print procedure provides the information such as data, waveform, ink supply, heating；CAN chip transmitting terminals（PHY）For inciting somebody to action
The result of FPGA verifications is sent to master board；SDRAM is used to store the errorless printable data of verification, and SDRAM is most deposited at last
The errorless printable data of verification of storage is sent to shower nozzle and is printed through FPGA again；Power module provides electricity for nozzle control panel
Source；The work of peripheral control interface unit control pump, black valve, liquid level instruction etc..
Some subregions are set in the SDRAM of nozzle control panel, and the quantity of subregion is consistent with the quantity of printer head, each
Errorless printable data is verified needed for a certain shower nozzle of correspondence storage in subregion, as shown in figure 3, there are four shower nozzles with one
Ink-jet printer as a example by, four subregions are correspondingly arranged in SDRAM and deposit that verification needed for four shower nozzles is errorless to beat respectively
Printing evidence, i.e. the first subregion, the second subregion, the 3rd subregion, the 4th subregion, shower nozzle is transmitted to will verify errorless printable data
During being printed, the print data of the first shower nozzle comes from the first subregion, and the print data of the second shower nozzle comes from
Two subregions, the print data of the 3rd shower nozzle comes from the 3rd subregion, and the print data of the 4th shower nozzle comes from the 4th subregion.
Next the process that nozzle control panel performs print processing is described, as shown in figure 4, in step S1, shower nozzle
Serial print data after FPGA receptions RIP in control panel through processing, data exist in the form of some data rows, i.e., and first
Data row, the second data row, the 3rd data row, the 4th data row etc., data row include wardrobe information and row print data information,
Wardrobe information includes line number, such as 0,1,2,3, by that analogy, wardrobe information also includes the sub- shower nozzle sequence number of correspondence, i.e., for judging
Which shower nozzle this data row is transferred to for printing, and row print data information is the corresponding graph text information of control nozzle printing.
In step S2, FPGA judges data row with the presence or absence of losing according to data line number, and line number should be continuous nonnegative integer, number
In should be with serial number successively incoming FPGA according to row, if judging line number discontinuous and existing and lose, by PHY through CAN
Feedback this journey data appearance mistake simultaneously deletes the data row, performs step S7, and master board resends this data row to spray
Head control panel, the step of continue executing with S1 ~ S2；If the line number of detection data row is not lost continuously, complete line number to be received
According to rear, step S3 is performed, CRC check is carried out to data row, and judge whether the print data information in data row is correct, that is, walk
Rapid S4, if CRC check corrupt data, wrong report feeds back to master board and deletes the data row by PHY through CAN
Remove, perform step S7, this data row is resend to nozzle control panel by master board, the step of continue executing with S1 ~ S4；If
CRC check data are correct, perform step S5, this data row is sent and is stored into SDRAM, in storing process, according to
Corresponding sub- shower nozzle sequence number stores into the corresponding SDRAM subregions of sub- shower nozzle this data row in wardrobe information.The program for the treatment of sends
After print command, the errorless printable data warp for having completed the verification of wardrobe checksum CRC that step S6, SDRAM will be stored is performed
FPGA is spread out of to shower nozzle, and the errorless printable data of verification is transmitted to corresponding shower nozzle and performs printing according to different subregions in SDRAM
Operation, until print out task terminates.
It is pointed out that the quantity of shower nozzle determines that the subregion in the SDRAM of nozzle control panel is only needed by printer configuration
Corresponding with shower nozzle quantity, the present invention is simultaneously unrestricted to printer head quantity.
It is to be noted that any deformation that specific embodiment of the invention is made, all without departing from of the invention
The scope that spirit and claim are recorded.
Claims (8)
1. a kind of inkjet printer head control panel, one end connection master board is received through the serial print data after treatment, separately
One end connects shower nozzle, will verify errorless printable data and is sent to shower nozzle, and nozzle control panel mainly includes FPGA, deserializer
DES, CAN chip transmitting terminal（PHY）, power module and peripheral control interface unit, it is characterised in that increase on nozzle control panel
If a synchronous DRAM（SDRAM）, SDRAM is connected with FPGA, and SDRAM and FPGA can carry out bidirectional data transfers,
SDRAM is used for storing through the errorless printable data of FPGA verifications, if the data of FPGA verifications are wrong, wrong report passes through CAN
Chip feeds back to master board, and master board resends print data, and data exist in the form of some data rows, data row
Including wardrobe information and row print data information, wardrobe information includes line number and the sub- shower nozzle sequence number of correspondence, and FPGA is according to data
Line number judge data row with the presence or absence of lose, after redundancy check is circulated to data（CRC check）, SDRAM sets different
Subregion, will verify errorless printable data and exports to the different subregions of SDRAM, then through FPGA according to the sub- shower nozzle sequence number of correspondence
Spread out of and printed to correspondence shower nozzle.
2. inkjet printer head control panel as claimed in claim 1, it is characterised in that the SDRAM sets different subregions
Quantity it is identical with printer head quantity, the errorless printable number of verification needed for each subregion correspondence one shower nozzle of storage
According to.
3. inkjet printer head control panel as claimed in claim 1, it is characterised in that the DES is used for the string that will be received
Row print data changes into parallel print data, and low-voltage differential signal is converted into single-ended signal.
4. inkjet printer head control panel as claimed in claim 1, it is characterised in that the serial print data is passed through
LVDS（Low-voltage differential signal）Transmission line is to nozzle control panel.
5. inkjet printer head control panel as claimed in claim 1, it is characterised in that the line number is continuous non-negative
Integer, the sub- shower nozzle sequence number of correspondence is used to judge which shower nozzle this data row is transferred to for printing.
6. inkjet printer head control panel as claimed in claim 1, it is characterised in that the FPGA passes through report is verified
PHY feeds back to master board through CAN, if verification is wrong, master board resends serial print data to shower nozzle control
Plate；If verification is errorless, master board continues to send new serial print data to nozzle control panel.
7. a kind of printable data transmission method of the inkjet printer head control panel based on described in claim 1, its feature
It is that the step of printable data is transmitted is specially：a）Master board will be transmitted to shower nozzle through the serial print data after treatment
The DES of control panel；b）Serial print data is changed into parallel print data by the DES of nozzle control panel, and will parallel print number
According to the FPGA being transferred on nozzle control panel；c）FPGA is verified to parallel print data, including is sentenced according to data line number
Whether disconnected data lose, CRC check are carried out to data and judge whether print data information is correct, if parallel print data has
By mistake, feed back wrong report and notify that master board resends serial print data and continues to verify；If parallel print data is errorless,
Errorless printable data is as verified, errorless printable data is verified and is stored in the SDRAM of nozzle control panel, while
The errorless report of feedback simultaneously notifies that master board continues the new serial print data of transmission and verified；d）Program sends printing life
Order, SDRAM will verify the sub- shower nozzle serial number information of correspondence of errorless printable data in data row be sent to FPGA again to
Correspondence shower nozzle is printed.
8. printable data transmission method as claimed in claim 7, it is characterised in that the step a）The middle string through after treatment
Row print data through LVDS transmission lines to nozzle control panel DES；The step c）In wrong report or errorless report it is logical
The PHY for crossing nozzle control panel feeds back to master board through CAN.
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| CN201410129397.4A CN103885734B (en) | 2014-04-02 | 2014-04-02 | A kind of inkjet printer head control panel and printable data transmission method |
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| CN201410129397.4A CN103885734B (en) | 2014-04-02 | 2014-04-02 | A kind of inkjet printer head control panel and printable data transmission method |
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| CN104723680B (en) * | 2015-04-04 | 2016-04-20 | 武汉璟丰科技有限公司 | The off line industry stamp printer of flattening |
| CN106541716B (en) * | 2015-09-17 | 2018-09-14 | 北大方正集团有限公司 | A kind of nozzle emulation board and printing test method for test printing control system |
| JP6724480B2 (en) * | 2016-03-30 | 2020-07-15 | ブラザー工業株式会社 | Printer |
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| CN106776414A (en) * | 2017-01-10 | 2017-05-31 | 深圳华云数码有限公司 | Data transmission device and method, ink-jet print system |
| JP6903511B2 (en) * | 2017-07-27 | 2021-07-14 | エスアイアイ・プリンテック株式会社 | Liquid injection head, liquid injection device |
| JP7059590B2 (en) * | 2017-11-28 | 2022-04-26 | セイコーエプソン株式会社 | Printing device and control method of printing device |
| CN108248218B (en) * | 2018-02-07 | 2020-03-24 | 广东正业科技股份有限公司 | Jet printing method, system and related device of character jet printing machine |
| CN110321574B (en) * | 2018-03-29 | 2022-05-13 | 华为技术有限公司 | Method and device for printing waveform |
| CN109002267B (en) * | 2018-07-09 | 2021-08-31 | 森大（深圳）技术有限公司 | Multi-nozzle printing data synchronous transmission method, device, equipment and storage medium |
| CN108984136B (en) * | 2018-07-11 | 2021-11-16 | 深圳市汉森软件有限公司 | Printing data transmission method, device, equipment and storage medium |
| CN111300988B (en) * | 2020-03-30 | 2021-08-31 | 厦门汉印电子技术有限公司 | Grating signal synchronous transmission device, control method and equipment |
| CN112319050A (en) * | 2020-11-12 | 2021-02-05 | 上海融跃电子科技股份有限公司 | Multi-printing-head inkjet printer system |
| CN112721443A (en) * | 2020-11-12 | 2021-04-30 | 上海融跃电子科技股份有限公司 | Ink-jet printing control system |
| CN113263721B (en) * | 2021-06-09 | 2022-04-26 | 河北大学 | Three-nozzle layered collaborative printing method |
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