CN111258511B - HDMI transmission printing protocol-based implementation method - Google Patents
HDMI transmission printing protocol-based implementation method Download PDFInfo
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- CN111258511B CN111258511B CN202010024675.5A CN202010024675A CN111258511B CN 111258511 B CN111258511 B CN 111258511B CN 202010024675 A CN202010024675 A CN 202010024675A CN 111258511 B CN111258511 B CN 111258511B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 27
- 101100493897 Arabidopsis thaliana BGLU30 gene Proteins 0.000 claims description 9
- 101100422614 Arabidopsis thaliana STR15 gene Proteins 0.000 claims description 9
- 101100141327 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RNR3 gene Proteins 0.000 claims description 9
- 101150112501 din1 gene Proteins 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 101000885321 Homo sapiens Serine/threonine-protein kinase DCLK1 Proteins 0.000 claims description 3
- 102100039758 Serine/threonine-protein kinase DCLK1 Human genes 0.000 claims description 3
- 230000009365 direct transmission Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000036039 immunity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
- G06F3/1279—Controller construction, e.g. aspects of the interface hardware
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1211—Improving printing performance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1236—Connection management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Communication Control (AREA)
- Dc Digital Transmission (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
The invention provides a realization method based on an HDMI transmission printing protocol, which is realized by an FPGA chip and an HDMI interface, wherein the HDMI interface comprises an HDMI transmitter and an HDMI Receiver.
Description
Technical Field
The invention belongs to the technical field of electronics, and particularly relates to an implementation method based on an HDMI transmission printing protocol.
Background
With the rapid development of the code-spraying printing industry, the requirements on printing protocols are higher and higher. Thus a reliable printing protocol is particularly important.
The traditional printing protocol transmission interface adopts an aviation plug, but is due to the process. The traditional aviation interfaces are basically within 12 cores, and are difficult to transmit in a differential signal mode due to quantity limitation, so that the defect of unstable interference large signals in the aspect of high-speed printing signal transmission in a direct connection mode is exposed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the realization method based on the HDMI transmission printing protocol, which is reasonable in design, and transmits the printing protocol in a differential signal mode, the HDMI interface not only has enough pin advantages, but also has great guarantee on reliability, the signal transmission is more stable and complete, the product design is satisfied, meanwhile, compared with the traditional 485 transmission scheme, the HDMI scheme is also reduced in cost, and the structure is relatively simple.
In order to achieve the above object, the present invention is realized by the following technical scheme: the implementation method based on the HDMI transmission printing protocol is implemented by an FPGA chip and an HDMI interface, wherein the HDMI interface comprises an HDMI transmitter and an HDMI Receiver, and the implementation method comprises the following steps:
(1) the method comprises the following steps The HDMI transmitter selects an SN75LBC174A four-way RS-485 differential line driver, a high-speed signal is sent to the SN75LBC174A by an FPGA chip, one clock is used for sending 3 ways of signals, 4 ways of signals are converted into differential signals through the SN75LBC174A and are transmitted to a 19PHDMI seat, other 4 ways of low-speed signals are sent to an SN74LV541A eight-way buffer/driver by the FPGA, and the three-state output is provided, and the three-state output is sent to the 19PHDMI seat after being driven by the SN74LV 541A;
(2) the method comprises the following steps DCLK is the clock signal of the printing protocol, produce a 5MHz synchronous clock signal input to SN75LBC174A by FPGA, mainly used for providing a synchronous clock for data transmission, DIN1 and DIN2 are data signal of the printing protocol, DIN1 is 8 high bit of data, DIN2 is 8 low bit of data, DIN1 and DIN2 make up 16 bit of data, DLOAD is signal and finish the flag bit, DLOAD will produce a high level pulse after finishing data transmission, these four-way signals are produced by FPGA, turn into 4 pairs of differential signal output through SN74LV541A, the control signal that remains is transmitted in the way of direct connection, DOUT is a print status signal, when sending the specific order into the printing protocol, DOUT will return to the printing state at that time, HCLK is a working clock provided for the printing system by FPGA, the printing system operates normally and is by this clock, the frequency is 250KHz, HFire is the flag signal used for controlling the shower nozzle to enable, when HFire begins to preheat the print by low to high, the shower nozzle is warm up the print, the shower nozzle is a warm-up print cartridge, the idle signal is not used for the fact that the shower nozzle is not used for verifying that the print is finished by the idle chip, the shower nozzle is not printed by the fact that the print cartridge is driven by the print cartridge, the idle signal is left when the print is not detected by the print cartridge, the print is not is finished by the print cartridge, the print is finished by the print head, the print is not is finished by the print mode;
(3) the method comprises the following steps The receiving end HDMI Receiver mainly adopts an SN75LBC175A four-way RS-485 differential line Receiver as a differential signal receiving end, 4 pairs of differential signals are resolved into 4 paths of electric signals to be transmitted to a printing chip, the IIC simultaneously receives through a P82B715, other control signals are transmitted to the printing chip after being received by the SN74LV125A with three-state output double-bus buffer, and printing is controlled, so that the transmission of a printing protocol by adopting the HDMI transmission mode is realized. Differential mode transmission does have more interference immunity than direct transmission.
As a preferred embodiment of the present invention, the HDMI interface is a 19P ear-type HDMI interface.
As a preferred embodiment of the invention, the signals of the data transmission are all differential transmissions.
The invention has the beneficial effects that:
1. the realization method based on the HDMI transmission printing protocol transmits the printing protocol in a differential signal mode, the HDMI interface not only has enough pin advantages, but also has great guarantee on reliability, the signal transmission is more stable and complete, the HDMI scheme is lower in cost than the traditional 485 transmission scheme while the product design is met, and the structure is relatively simple.
2. The realization method based on the HDMI transmission printing protocol is reasonable in design, the traditional 10P aviation plug is changed into an HDMI interface, the interference resistance of signals is greatly improved by adopting a differential line architecture, and the reliability is better under the condition of high-speed printing.
Drawings
FIG. 1 is a general technical block diagram of an implementation method based on an HDMI transmission printing protocol;
fig. 2 is a functional schematic diagram of an HDMI interface pin of an implementation method based on an HDMI transmission printing protocol.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 2, the present invention provides a technical solution: the implementation method based on the HDMI transmission printing protocol is implemented by an FPGA chip and an HDMI interface, wherein the HDMI interface comprises an HDMI transmitter and an HDMI Receiver, and the implementation method comprises the following steps:
(1) the method comprises the following steps The HDMI transmitter selects an SN75LBC174A four-way RS-485 differential line driver, a high-speed signal is sent to the SN75LBC174A by an FPGA chip, one clock is used for sending 3 ways of signals, 4 ways of signals are converted into differential signals through the SN75LBC174A and are transmitted to a 19PHDMI seat, other 4 ways of low-speed signals are sent to an SN74LV541A eight-way buffer/driver by the FPGA, and the three-state output is provided, and the three-state output is sent to the 19PHDMI seat after being driven by the SN74LV 541A;
(2) the method comprises the following steps DCLK is the clock signal of the printing protocol, produce a 5MHz synchronous clock signal input to SN75LBC174A by FPGA, mainly used for providing a synchronous clock for data transmission, DIN1 and DIN2 are data signal of the printing protocol, DIN1 is 8 high bit of data, DIN2 is 8 low bit of data, DIN1 and DIN2 make up 16 bit of data, DLOAD is signal and finish the flag bit, DLOAD will produce a high level pulse after finishing data transmission, these four-way signals are produced by FPGA, turn into 4 pairs of differential signal output through SN74LV541A, the control signal that remains is transmitted in the way of direct connection, DOUT is a print status signal, when sending the specific order into the printing protocol, DOUT will return to the printing state at that time, HCLK is a working clock provided for the printing system by FPGA, the printing system operates normally and is by this clock, the frequency is 250KHz, HFire is the flag signal used for controlling the shower nozzle to enable, when HFire begins to preheat the print by low to high, the shower nozzle is warm up the print, the shower nozzle is a warm-up print cartridge, the idle signal is not used for the fact that the shower nozzle is not used for verifying that the print is finished by the idle chip, the shower nozzle is not printed by the fact that the print cartridge is driven by the print cartridge, the idle signal is left when the print is not detected by the print cartridge, the print is not is finished by the print cartridge, the print is finished by the print head, the print is not is finished by the print mode;
(3) the method comprises the following steps The receiving end HDMI Receiver mainly adopts an SN75LBC175A four-way RS-485 differential line Receiver as a differential signal receiving end, 4 pairs of differential signals are resolved into 4 paths of electric signals to be transmitted to a printing chip, the IIC simultaneously receives through a P82B715, other control signals are transmitted to the printing chip after being received by the SN74LV125A with three-state output double-bus buffer, and printing is controlled, so that the transmission of a printing protocol by adopting the HDMI transmission mode is realized. Differential mode transmission does have more interference immunity than direct transmission.
As a preferred embodiment of the present invention, the HDMI interface is a 19P ear-type HDMI interface.
As a preferred embodiment of the invention, the signals of the data transmission are all differential transmissions.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The implementation method based on the HDMI transmission printing protocol is characterized by being implemented by an FPGA chip and an HDMI interface, wherein the HDMI interface comprises an HDMI transmitter and an HDMI Receiver, and the implementation method is as follows:
(1) the method comprises the following steps The HDMI transmitter selects an SN75LBC174A four-way RS-485 differential line driver, a high-speed signal is sent to the SN75LBC174A by an FPGA chip, one clock is used for sending 3 ways of signals, 4 ways of signals are converted into differential signals through the SN75LBC174A and are transmitted to a 19PHDMI seat, other 4 ways of low-speed signals are sent to an SN74LV541A eight-way buffer/driver by the FPGA, and the three-state output is provided, and the three-state output is sent to the 19PHDMI seat after being driven by the SN74LV 541A;
(2) the method comprises the following steps DCLK is the clock signal of the printing protocol, produce a 5MHz synchronous clock signal input to SN75LBC174A by FPGA, mainly used for providing a synchronous clock for data transmission, DIN1 and DIN2 are data signal of the printing protocol, DIN1 is 8 high bit of data, DIN2 is 8 low bit of data, DIN1 and DIN2 make up 16 bit of data, DLOAD is signal and finish the flag bit, DLOAD will produce a high level pulse after finishing data transmission, these four-way signals are produced by FPGA, turn into 4 pairs of differential signal output through SN74LV541A, the control signal that remains is transmitted in the way of direct connection, DOUT is a print status signal, when sending the specific order into the printing protocol, DOUT will return to the printing state at that time, HCLK is a working clock provided for the printing system by FPGA, the printing system operates normally and is by this clock, the frequency is 250KHz, HFire is the flag signal used for controlling the shower nozzle to enable, when HFire begins to preheat the print by low to high, the shower nozzle is warm up the print, the shower nozzle is a warm-up print cartridge, the idle signal is not used for the fact that the shower nozzle is not used for verifying that the print is finished by the idle chip, the shower nozzle is not printed by the fact that the print cartridge is driven by the print cartridge, the idle signal is left when the print is not detected by the print cartridge, the print is not is finished by the print cartridge, the print is finished by the print head, the print is not is finished by the print mode;
(3) the method comprises the following steps The receiving end HDMI Receiver mainly adopts an SN75LBC175A four-way RS-485 differential line Receiver as a differential signal receiving end, 4 pairs of differential signals are resolved into 4 paths of electric signals to be transmitted to a printing chip, the IIC simultaneously receives the electric signals through a P82B715, other control signals are transmitted to the printing chip after being received by the SN74LV125A with three-state output double-bus buffer, and therefore printing is controlled, the transmission protocol is transmitted by adopting an HDMI transmission mode, and the differential mode transmission is really stronger than direct transmission in anti-interference capability.
2. The method for implementing an HDMI-based transmission printing protocol according to claim 1, wherein: the HDMI interface adopts a 19P lug type HDMI interface.
3. The method for implementing an HDMI-based transmission printing protocol according to claim 1, wherein: the signals of the data transmission are all differential transmission.
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| CN202010024675.5A CN111258511B (en) | 2020-01-10 | 2020-01-10 | HDMI transmission printing protocol-based implementation method |
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| CN202010024675.5A CN111258511B (en) | 2020-01-10 | 2020-01-10 | HDMI transmission printing protocol-based implementation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0618144D0 (en) * | 2006-09-15 | 2006-10-25 | Cametrics Ltd | Industrial ink jet printing methods and apparatus |
| CN101771663A (en) * | 2008-12-29 | 2010-07-07 | 上海华虹集成电路有限责任公司 | Verification system based on UCPS protocol |
| CN104541254A (en) * | 2012-03-02 | 2015-04-22 | 凯萨股份有限公司 | Contactless replacement for cabled standards-based interfaces |
| CN109219945A (en) * | 2016-06-30 | 2019-01-15 | 英特尔公司 | The communication of HDMI deflection compensation |
| CN110348033A (en) * | 2018-04-04 | 2019-10-18 | 英特尔公司 | Reduce the deflection between the positive conductor and negative conductor that carry Difference signal pair |
-
2020
- 2020-01-10 CN CN202010024675.5A patent/CN111258511B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0618144D0 (en) * | 2006-09-15 | 2006-10-25 | Cametrics Ltd | Industrial ink jet printing methods and apparatus |
| CN101771663A (en) * | 2008-12-29 | 2010-07-07 | 上海华虹集成电路有限责任公司 | Verification system based on UCPS protocol |
| CN104541254A (en) * | 2012-03-02 | 2015-04-22 | 凯萨股份有限公司 | Contactless replacement for cabled standards-based interfaces |
| CN109219945A (en) * | 2016-06-30 | 2019-01-15 | 英特尔公司 | The communication of HDMI deflection compensation |
| CN110348033A (en) * | 2018-04-04 | 2019-10-18 | 英特尔公司 | Reduce the deflection between the positive conductor and negative conductor that carry Difference signal pair |
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| CN111258511A (en) | 2020-06-09 |
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Address after: No. 02, 5 / F, block 7, Fenghuang Industrial Park, No. 52, Liufang Avenue, fozuling street, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee after: Wuhan Xiantong Technology Co.,Ltd. Address before: No. 02, 5 / F, block 7, Fenghuang Industrial Park, No. 52, Liufang Avenue, fozuling street, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: WUHAN XIANTONG TECHNOLOGY Co.,Ltd. |
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