CN108270694A - A kind of high speed transmission method based on LVDS - Google Patents
A kind of high speed transmission method based on LVDS Download PDFInfo
- Publication number
- CN108270694A CN108270694A CN201711258712.3A CN201711258712A CN108270694A CN 108270694 A CN108270694 A CN 108270694A CN 201711258712 A CN201711258712 A CN 201711258712A CN 108270694 A CN108270694 A CN 108270694A
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- China
- Prior art keywords
- lvds
- high speed
- data
- message
- information
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/825—Involving tunnels, e.g. MPLS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2212/00—Encapsulation of packets
Abstract
The present invention relates to the technical field of data transmission of embedded system, more particularly to a kind of high speed transmission method based on LVDS.A kind of high speed transmission method based on LVDS of the present invention, it is to encapsulate data into the data packet with header packet information and check information, parallel data and clock information are become into serial LVDS forms, make its high speed transmission data between chip chamber or board, while the tail portion of outgoing packet can be obtained by the length information of message.A kind of high speed transmission method based on LVDS of the present invention is applied to inside embedded system, can improve the transmission speed of internal data, reduces the complexity of PCB fabric swatch.
Description
Technical field
The present invention relates to the technical field of data transmission of embedded system, more particularly to a kind of high-speed transfer based on LVDS
Method.
Background technology
Lvds ：Low-Voltage Differential Signaling low-voltage differential signals
A kind of signal transfer mode proposed by National Semiconductor in 1994, is a kind of level standard, LVDS interface
Also known as RS-644 bus interface is a kind of data transmission and interfacing just occurred the 1990s.
Embedded system（Embedded system）, it is a kind of " be completely embedded into inside controlled device, for specific application
The dedicated computer system of design ", according to British Electrical Engineers Association（U.K. Institution of Electrical
Engineer）Definition, embedded system in order to control, monitoring or ancillary equipment, machine or the equipment for plant operation.With it is a
General-purpose computing system as people's computer is different, and what embedded system usually performed is pre-defined with particular requirement
Task.Since embedded system is just for a special task, designer can optimize it, reduce size drop
Low cost.Embedded system usually carries out mass production, so single cost savings, can carry out hundreds and thousands of with yield
Amplification.
Embedded system is the system for controlling or monitoring the large-scale equipments such as machine, device, factory.It is domestic universal
The embedded system of approval is defined as：Application-centered, based on computer technology, software and hardware can be cut, and adapt to application
System is to the dedicated computer system of the strict demands such as function, reliability, cost, volume, power consumption.In general, embedded system is
The embeded processor control panel that one control program is stored in the ROM.In fact, all equipment with digital interface, such as
Wrist-watch, micro-wave oven, video recorder, automobile etc., all using embedded system, some embedded systems also include operating system, but big
Most embedded systems are all to realize entire control logic by single program.
The core of embedded system is by one or several pre-programmed to be used for performing the micro- of several tasks
Manage device or singlechip group into.The software that user's selection can be run from all-purpose computer is different, the software in embedded system
It is typically temporarily constant；So it is frequently referred to as " firmware ".
Under the prior art, in embedded systems, the mode of data transmission is relatively simple, and data transmission bauds is slow, and
And PCB fabric swatch is complex.
Invention content
In order to solve problem of the prior art, the present invention provides a kind of high speed transmission method based on LVDS, applications
Inside embedded system, the transmission speed of internal data can be improved, reduces the complexity of PCB fabric swatch.
The technical solution adopted in the present invention is as follows：
A kind of high speed transmission method based on LVDS is to encapsulate data into the data packet with header packet information and check information,
Parallel data and clock information are become into serial LVDS forms, make its high speed transmission data between chip chamber or board, together
When the tail portion of outgoing packet can be obtained by the length information of message.Header packet information includes the length and ID of the message of encapsulation
Number.
Method specifically includes：
A, the form of data message is input in system, logic is encapsulated by customized LVDS, by message according to LVDS packets
Header, LVDS data packets, the form of LVDS check codes are encapsulated；
B, packaged message is sent to receiving terminal by LVDS transmitting terminals；
C, LVDS receiving terminals are verified, verification will after passing through according to the information of the message received and the header packet information of LVDS
The form that LVDS packets Reseal into required message is sent to another opposite system.By data message information and clock information
The serial transmission by way of coding.If LVDS receiving terminals find that verification is obstructed out-of-date, sent out by gpio interfaces to LVDS
Sending end requirement retransmits.By the transmission that data message information and clock information are serial by way of coding.Pass through increase
The memory headroom storage of LVDS transmitting terminals needs the message retransmitted.
The advantageous effect that technical solution provided by the invention is brought is：
A kind of high speed transmission method based on LVDS of the present invention, encapsulates data into the number with header packet information and check information
According to packet, parallel data and clock information are become into serial LVDS forms according to certain coding mode, make it in chip chamber or
High speed transmission data between person's board, while the tail portion of outgoing packet can be obtained by the length information of message, using such transmission
Method can use header packet information to determine the head of message, using verification and enough memory headrooms, ensure in the transmission of LVDS
The correctness of system transmission data.
Also, a kind of high speed transmission method based on LVDS of the present invention, data message information and clock information are passed through
The serial transmission of the mode of coding improves the transmission rate of interface.In whole flow process, complete hardware realize, do not need to CPU and
Software participates in, therefore substantially increases the efficiency of transmission of message in systems.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of method flow diagram of high speed transmission method based on LVDS of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
A kind of high speed transmission method based on LVDS of the present embodiment, is encapsulated data into header packet information and check information
Data packet, parallel data and clock information are become into serial LVDS forms, it is made to be passed at a high speed between chip chamber or board
Transmission of data, while the tail portion of outgoing packet can be obtained by the length information of message.Header packet information includes the length of the message of encapsulation
Degree and ID number.
Method specifically includes：
A, the form of data message is input in system, logic is encapsulated by customized LVDS, by message according to LVDS packets
Header, LVDS data packets, the form of LVDS check codes are encapsulated；
B, packaged message is sent to receiving terminal by LVDS transmitting terminals；
C, LVDS receiving terminals are verified, verification will after passing through according to the information of the message received and the header packet information of LVDS
The form that LVDS packets Reseal into required message is sent to another opposite system.By data message information and clock information
The serial transmission by way of coding.If LVDS receiving terminals find that verification is obstructed out-of-date, sent out by gpio interfaces to LVDS
Sending end requirement retransmits.By the transmission that data message information and clock information are serial by way of coding.Pass through increase
The memory headroom storage of LVDS transmitting terminals needs the message retransmitted.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of high speed transmission method based on LVDS is to encapsulate data into the data with header packet information and check information
Packet, becomes serial LVDS forms by parallel data and clock information, makes its high speed transmission data between chip chamber or board,
The tail portion of outgoing packet can be obtained by the length information of message simultaneously.
2. a kind of high speed transmission method based on LVDS according to claim 1, which is characterized in that its method is specifically wrapped
It includes：
A, the form of data message is input in system, logic is encapsulated by customized LVDS, by message according to LVDS packets
Header, LVDS data packets, the form of LVDS check codes are encapsulated；
B, packaged message is sent to receiving terminal by LVDS transmitting terminals；
C, LVDS receiving terminals are verified, verification will after passing through according to the information of the message received and the header packet information of LVDS
The form that LVDS packets Reseal into required message is sent to another opposite system.
A kind of 3. high speed transmission method based on LVDS according to claim 1, which is characterized in that the header packet information
The length and ID number of message including encapsulation.
4. a kind of high speed transmission method based on LVDS according to claim 2, which is characterized in that in the step C,
By the transmission that data message information and clock information are serial by way of coding.
5. a kind of high speed transmission method based on LVDS according to claim 2, which is characterized in that in the step C,
If LVDS receiving terminals find that verification is obstructed out-of-date, require to retransmit to LVDS transmitting terminals by gpio interfaces.
6. a kind of high speed transmission method based on LVDS according to claim 2, which is characterized in that by increasing LVDS hairs
The memory headroom storage of sending end needs the message retransmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258712.3A CN108270694A (en) | 2017-12-04 | 2017-12-04 | A kind of high speed transmission method based on LVDS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258712.3A CN108270694A (en) | 2017-12-04 | 2017-12-04 | A kind of high speed transmission method based on LVDS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108270694A true CN108270694A (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711258712.3A Pending CN108270694A (en) | 2017-12-04 | 2017-12-04 | A kind of high speed transmission method based on LVDS |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111182252A (en) * | 2019-12-31 | 2020-05-19 | 浙江华诺康科技有限公司 | Image medical instrument system and image transmission method |
| CN111200581A (en) * | 2018-11-19 | 2020-05-26 | 北京华航无线电测量研究所 | Data receiving and transmitting module based on LVDS bus |
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| CN1571412A (en) * | 2004-05-13 | 2005-01-26 | 中兴通讯股份有限公司 | A baseband data transmission apparatus and frame synchronization method thereof |
| CN102158400A (en) * | 2011-03-03 | 2011-08-17 | 北京航空航天大学 | Communication interface of space-based route switching system and space-based route switching system |
| CN104035904A (en) * | 2014-07-04 | 2014-09-10 | 山东超越数控电子有限公司 | FPGA-based interconnection device among chips |
| CN105117353A (en) * | 2015-06-26 | 2015-12-02 | 许继集团有限公司 | FPGA with general data interaction module and information processing system using same |
| CN105812355A (en) * | 2016-03-04 | 2016-07-27 | 北京左江科技有限公司 | LVDS interface communication method |
| CN106502932A (en) * | 2016-09-20 | 2017-03-15 | 中国科学院自动化研究所 | The method of interconnecting interface and its write operation and read operation between the piece based on hierarchy |
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2017
- 2017-12-04 CN CN201711258712.3A patent/CN108270694A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571412A (en) * | 2004-05-13 | 2005-01-26 | 中兴通讯股份有限公司 | A baseband data transmission apparatus and frame synchronization method thereof |
| CN102158400A (en) * | 2011-03-03 | 2011-08-17 | 北京航空航天大学 | Communication interface of space-based route switching system and space-based route switching system |
| CN104035904A (en) * | 2014-07-04 | 2014-09-10 | 山东超越数控电子有限公司 | FPGA-based interconnection device among chips |
| CN105117353A (en) * | 2015-06-26 | 2015-12-02 | 许继集团有限公司 | FPGA with general data interaction module and information processing system using same |
| CN105812355A (en) * | 2016-03-04 | 2016-07-27 | 北京左江科技有限公司 | LVDS interface communication method |
| CN106502932A (en) * | 2016-09-20 | 2017-03-15 | 中国科学院自动化研究所 | The method of interconnecting interface and its write operation and read operation between the piece based on hierarchy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200581A (en) * | 2018-11-19 | 2020-05-26 | 北京华航无线电测量研究所 | Data receiving and transmitting module based on LVDS bus |
| CN111182252A (en) * | 2019-12-31 | 2020-05-19 | 浙江华诺康科技有限公司 | Image medical instrument system and image transmission method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180710 |
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