CN110012272A - A kind of method for transmission processing and device of ARINC818 data flow - Google Patents
A kind of method for transmission processing and device of ARINC818 data flow Download PDFInfo
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- CN110012272A CN110012272A CN201910294852.9A CN201910294852A CN110012272A CN 110012272 A CN110012272 A CN 110012272A CN 201910294852 A CN201910294852 A CN 201910294852A CN 110012272 A CN110012272 A CN 110012272A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
A kind of method for transmission processing and device of ARINC818 data flow, comprising: receive and cache at least two ARINC818 data flows；According to the control signal of each ARINC818 data flow, it is inserted into remaining ARINC818 data flow using the timing idle period of single ARINC818 data flow, tissue obtains the mixed data flow of at least two ARINC818 data flows；Export mixed data flow.
Description
Technical field
Present document relates to but be not limited to field of computer technology, the method for transmission processing of espespecially a kind of ARINC818 data flow and
Device.
Background technique
ARINC818 agreement is a kind of based on FC-AV (Fiber Channel Protocol for Audio-Video, light
Fine channel audio video) agreement Aviation electronic field digital video bus agreement, referred to as aviation electronics number regard
Frequency bus (ADVB, Avionics Digital Video Bus).ARINC818 agreement is mainly characterized by high bandwidth, low prolongs
Late, high reliability, electromagnetism interference, set expandability are strong.The typical case of ARINC818 agreement includes infrared and optical imagery
Transmission, radar, head-up display, Multi-function display, map system etc., ARINC818 agreement can satisfy these to performance, reliable
The requirement of the high application of property, requirement on flexibility.
Summary of the invention
This application provides the method for transmission processing and device of a kind of ARINC818 data flow, and single fiber transmission may be implemented
Multiple ARINC818 data flows.
On the one hand, the application provides a kind of method for transmission processing of ARINC818 data flow, comprising: receives and caches at least
Two ARINC818 data flows；According to the control signal of each ARINC818 data flow, single ARINC818 data flow is utilized
Timing idle period is inserted into remaining ARINC818 data flow, and tissue obtains the blended data of at least two ARINC818 data flows
Stream；Export mixed data flow.
On the other hand, the application provides a kind of method for transmission processing of ARINC818 data flow, comprising: receive and cache to
ARINC818 data frame in the mixed data flow of few two ARINC818 data flows；According to the stream of the ARINC818 data frame
Mark, identifies the type of ARINC818 data flow belonging to the ARINC818 data frame and the ARINC818 data frame；
Store the ARINC818 data frame identified.
In another aspect, the application provides a kind of transmission processing device of ARINC818 data flow, comprising: data buffer storage mould
Block, suitable for receiving and caching at least two ARINC818 data flows；Host state machine module is suitable for according to each ARINC818 data
The control signal of stream is inserted into remaining ARINC818 data flow using the timing idle period of single ARINC818 data flow, tissue
Obtain the mixed data flow of at least two ARINC818 data flow；Output module is suitable for exporting the mixed data flow.
In another aspect, the application provides a kind of transmission processing device of ARINC818 data flow, comprising: receive caching mould
Block, the ARINC818 data frame in mixed data flow suitable for receiving and caching at least two ARINC818 data flows；Frame inspection
Module identifies ARINC818 belonging to the ARINC818 data frame suitable for the traffic identifier according to the ARINC818 data frame
The type of data flow and the ARINC818 data frame；User equipment module, suitable for storage identify described in
ARINC818 data frame.
In another aspect, the application provides a kind of computer readable storage medium, it is stored with the transmission of ARINC818 data flow
The step of processing routine, the transmission process program is performed the method for transmission processing for realizing above-mentioned data flow sending side.
In another aspect, the application provides a kind of computer readable storage medium, it is stored with the transmission of ARINC818 data flow
The step of processing routine, the transmission process program is performed the method for transmission processing for realizing above-mentioned data stream reception side.
In this application, the transmitting terminal of ARINC818 data flow can receive and cache at least two ARINC818 data
Stream；According to the control signal of each ARINC818 data flow, it is inserted into using the timing idle period of single ARINC818 data flow
Remaining ARINC818 data flow, tissue obtain the mixed data flow of at least two ARINC818 data flows；Export mixed data flow.
In the embodiment of the present application, transmitting terminal sends other using idle period insertion when sending single ARINC818 data flow on optical fiber
ARINC818 data flow, receiving end can be by carrying out detection identification and processing to multiple ARINC818 data flows, to realize
Single fiber transmits multiple ARINC818 data flows, effectively improves the bandwidth availability ratio of ARINC818 data transmission fiber, significant to drop
The equipment cost and complexity of low multiple ARINC818 data stream transmittings.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood and implementing the application.Other advantages of the application can be by specification, claims
And scheme described in attached drawing is achieved and obtained.
Detailed description of the invention
Attached drawing is used to provide the understanding to technical scheme, and constitutes part of specification, with the application's
Embodiment is used to explain the technical solution of the application together, does not constitute the limitation to technical scheme.
Fig. 1 is a kind of transmission schematic diagram of traditional multi-channel A RINC818 data flow；
Fig. 2 is a kind of flow chart of the method for transmission processing of ARINC818 data flow provided by the embodiments of the present application；
Fig. 3 is the transmission schematic diagram of multi-channel A RINC818 data flow provided by the embodiments of the present application；
Fig. 4 is a kind of exemplary diagram of the transmission processing device of ARINC818 data flow provided by the embodiments of the present application；
Fig. 5 is the flow chart of the method for transmission processing of another kind ARINC818 data flow provided by the embodiments of the present application；
Fig. 6 is the exemplary diagram of the transmission processing device of another kind ARINC818 data flow provided by the embodiments of the present application；
Fig. 7 is that a kind of of the method for transmission processing of ARINC818 data flow provided by the embodiments of the present application applies exemplary diagram.
Specific embodiment
This application describes multiple embodiments, but the description is exemplary, rather than restrictive, and for this
It is readily apparent that can have more in the range of embodiments described herein includes for the those of ordinary skill in field
More embodiments and implementation.Although many possible feature combinations are shown in the attached drawings, and in a specific embodiment
It is discussed, but many other combinations of disclosed feature are also possible.Unless the feelings specially limited
Other than condition, any feature or element of any embodiment can be with any other features or element knot in any other embodiment
It closes and uses, or any other feature or the element in any other embodiment can be substituted.
The application includes and contemplates the combination with feature known to persons of ordinary skill in the art and element.The application is
It can also combine with any general characteristics or element through disclosed embodiment, feature and element, be defined by the claims with being formed
Unique scheme of the invention.Any feature or element of any embodiment can also be with features or member from other scheme of the invention
Part combination, to form the unique scheme of the invention that another is defined by the claims.It will thus be appreciated that showing in this application
Out and/or any feature of discussion can be realized individually or in any suitable combination.Therefore, in addition to according to appended right
It is required that and its other than the limitation done of equivalent replacement, embodiment is not limited.Furthermore, it is possible in the guarantor of appended claims
It carry out various modifications and changes in shield range.
In addition, method and/or process may be rendered as spy by specification when describing representative embodiment
Fixed step sequence.However, in the degree of this method or process independent of the particular order of step described herein, this method
Or process should not necessarily be limited by the step of particular order.As one of ordinary skill in the art will appreciate, other steps is suitable
Sequence is also possible.Therefore, the particular order of step described in specification is not necessarily to be construed as limitations on claims.This
Outside, the claim for this method and/or process should not necessarily be limited by the step of executing them in the order written, art technology
Personnel are it can be readily appreciated that these can sequentially change, and still remain in the spirit and scope of the embodiment of the present application.
The application mode of typical ARINC818 agreement is point-to-point mode, i.e. sending device and receiving device passes through optical fiber
Connection, sending device send an ARINC818 data flow by optical fiber, and receiving device receives the ARINC818 data flow and does
Subsequent processing.Wherein, the ARINC818 data flow that sending device is sent on the one hand to meet field as defined in ARINC818 agreement,
Character requirement, on the other hand also needs to meet certain sequential relationship.In addition, the ARINC818 data flow that sending device issues
Total bandwidth also need to be less than or equal to optical fiber maximum transmission bandwidth.Receiving device can be provided and be sent out according to ARINC818 agreement
ICD (Interface Control Document, the Interface Control File) parameter of equipment is sent to carry out ARINC818 data flow
Parsing.
However, with the fast development of technology, fiber bandwidth is drilled from 1Gbps, 2Gbps to 4Gbps, 6Gbps and 10Gbps
Into, and typical video resolution such as 1280 × 1024, RGB24bit, the bandwidth requirement of 60Hz refresh rate is only 1.89Gbps.
Under traditional point-to-point mode, the use of optical fiber line rate is such as standard FC line rate 4.25Gbps, then exists close to half
Bandwidth does not use.In addition, more and more complicated applications (such as head-up display (HUD, Head Up Display), head
Wear formula visual device (HMD, Head Mount Display) etc.) input include multiple ARINC818 video sources, and it is traditional
Point-to-point mode is to distribute an independent physical fiber and corresponding sending device for each ARINC818 video source and connect
Receiving unit, in this way, which the transmission realization of above-mentioned complicated applications will lead to that the device is complicated, degree is high, at high price.
Fig. 1 is a kind of transmission schematic diagram of traditional multi-channel A RINC818 data flow.Wherein, it is passed using ARINC818 agreement
Four display equipment of vision signal to the distal end of defeated four-way CCD camera (i.e. camera 11,21,32 and 41) acquisition (show and set
Standby 14,24,34 and 44).Wherein, the video specification of each camera can be 720 × 480, RGB24bit, 60Hz.Such as Fig. 1 institute
Show, using traditional point-to-point mode, every road vision signal is configured with a set of individual ARINC818 encoding device (ARINC818
The sending device of data), a set of ARINC818 decoding device (receiving devices of ARINC818 data) He Yigen optical fiber.Image
The vision signal of first 11 acquisition is transferred to aobvious by ARINC818 encoding device 12, optical fiber 1 and ARINC8181 decoding device 13
Show equipment 14；The vision signal that camera 21 acquires passes through ARINC818 encoding device 22, optical fiber 2 and ARINC8181 decoding
Equipment 23 is transferred to display equipment 24；Camera 31 acquire vision signal by ARINC818 encoding device 32, optical fiber 3 and
ARINC8181 decoding device 33 is transferred to display equipment 34；The vision signal that camera 41 acquires is set by ARINC818 coding
Standby 42, optical fiber 4 and ARINC8181 decoding device 43 are transferred to display equipment 44；It can be seen that the transmission of four tunnel vision signals
Need sending device, receiving device and the optical fiber of corresponding number.Moreover, the actual bandwidth demand of the vision signal of each camera
About 500Mbps, it is assumed that use maximum bandwidth for the optical fiber of 4.25Gbps, then the bandwidth ability greater than 80%, which will be present, not makes
With the high bandwidth advantage using optical fiber being unable to fully, to cause the wasting of resources.
The embodiment of the present application provides the method for transmission processing and device of a kind of ARINC818 data flow, can be on single fiber
Multiple ARINC818 data flows are transmitted, to improve the bandwidth availability ratio of simple optical fiber, and reduce more ARINC818 data flows
Transmission cost.
Fig. 2 is a kind of flow chart of the method for transmission processing of ARINC818 data flow provided by the embodiments of the present application.This reality
The method for transmission processing for applying example offer, can be applied to the sending device of ARINC818 data, for example, ARINC818 coding is set
It is standby.As shown in Fig. 2, method for transmission processing provided in this embodiment may comprise steps of:
Step 201 receives and caches at least two ARINC818 data flows；
Step 202, according to the control signal of each ARINC818 data flow, utilize the timing of single ARINC818 data flow
Idle period is inserted into remaining ARINC818 data flow, and tissue obtains the mixed data flow of at least two ARINC818 data flows；
Step 203, output mixed data flow.
In one exemplary embodiment, step 202 may include: a data frame in first ARINC818 data flow
After the completion of tissue, using the timing idle period of the ARINC818 data flow, the same of remaining ARINC818 data flow is successively organized
The data frame of type.Wherein, the type of data frame may include: 0 data frame of object (object), 2 data frame of object.
Fig. 3 is the transmission schematic diagram of multi-channel A RINC818 data flow provided by the embodiments of the present application.It is regarded on tetra- tunnel Fig. 3 Zhong Yi
It is illustrated for the transmission of frequency data stream (i.e. Video_0, Video_1, Video_2, Video_3).However, the application is to this
It does not limit.In practical applications, the number of the video data stream of transmission can be according to the number that can be inserted into timing idle period
It is estimated according to the number of stream.
In Fig. 3, t1 indicate any road video data stream object0 data frame and first object2 data frame it
Between time interval；T2 indicates the time interval between any two continuous object2 data frames of any road video data stream；
T_c indicates container (Container) period.
As shown in figure 3, four tunnel video data streams are directed to, in the object0 data of first via video data stream (Video_0)
Idle period (idle) after frame can successively organize the object0 data frame of the second tunnel video data stream (Video_1),
The object0 data frame of three tunnel video data streams (Video_2) and the object0 of the 4th tunnel video data stream (Video_3)
Data frame；Idle period after first object2 data frame of first via video data stream can successively organize second
First object2 data frame of road video data stream, the object2 data frame of third road video data stream and the 4th tunnel view
The object2 data frame of frequency data stream.Similarly, the sky after second object2 data frame of first via video data stream
Idle section can successively organize the object2 data frame of remaining video data stream.In this way, which available one is mixed with four
The mixed data flow of road video data stream, and each individually data flow meets respective time sequence definition requirement.
In one exemplary embodiment, after step 201, the method for transmission processing of the present embodiment can also include: to
Each ARINC818 data flow generates corresponding vessel head information, optical-fibre channel (FC) frame originating point information and auxiliary data；
Correspondingly, step 202 be may include: and be corresponded to for each ARINC818 data flow using ARINC818 data flow
FC frame originating point information, vessel head information and auxiliary data, organize object0 data frame, utilize ARINC818 data flow corresponding
FC frame originating point information, organize object2 data frame.In other words, object0 data frame may include FC frame head, vessel head and
Auxiliary data；Object2 data frame may include FC frame head and payload user data.
In one exemplary embodiment, the method for transmission processing of the present embodiment can also include: according to each ARINC818
The transmission timing parameter of data flow generates corresponding control signal；Wherein, control signal includes at least: container transmission starts letter
Number, object0 data frame proceed-to-send signal and object2 data frame proceed-to-send signal.
The embodiment of the present application also provides a kind of transmission processing device of ARINC818 data flow, comprising: data cache module,
Suitable for receiving and caching at least two ARINC818 data flows；Host state machine module is suitable for according to each ARINC818 data flow
Control signal, be inserted into remaining ARINC818 data flow using the timing idle period of single ARINC818 data flow, organize
To the mixed data flow of at least two ARINC818 data flows；Output module is suitable for output mixed data flow.The present embodiment provides
Transmission processing device can be applied to the sending devices of ARINC818 data, for example, ARINC818 encoding device.
In one exemplary embodiment, the transmission processing device of the present embodiment can also include: vessel head generation module, fit
In generating corresponding vessel head information to each ARINC818 data flow；Frame head generation module is suitable for each ARINC818 number
According to the raw corresponding FC frame originating point information of miscarriage；Auxiliary data generation module is suitable for generating to each ARINC818 data flow corresponding
Auxiliary data；
Wherein, host state machine module may be adapted to utilize ARINC818 data flow pair for each ARINC818 data flow
FC frame originating point information, vessel head information and the auxiliary data answered organize object0 data frame, utilize ARINC818 data flow pair
The FC frame originating point information answered organizes object2 data frame.
In one exemplary embodiment, the transmission processing device of the present embodiment can also include: period control module, be suitable for
According to the transmission timing parameter of each ARINC818 data flow, corresponding control signal is generated；Wherein, control signal at least wraps
Include: container sends commencing signal, object0 data frame proceed-to-send signal and object2 data frame proceed-to-send signal.
Fig. 4 is a kind of exemplary diagram of the transmission processing device of ARINC818 data flow provided by the embodiments of the present application.This reality
The transmission processing device for applying example offer can be applied to ARINC818 encoding device.As shown in figure 4, transmission provided in this embodiment
Processing unit may include: data cache module 401, host state machine module 402, vessel head generation module 404, frame head generation mould
Block 405, auxiliary data generation module 406, cyclic redundancy check (CRC, Cyclic Redundancy Check) computing module
407, period control module 408 and output module 403.
In the present example embodiment, different ARINC818 data flows can by send mark (OX_ID,
Originator ID) it distinguishes.However, the application does not limit this.In other implementations, other can be used
Custom field distinguishes different ARINC818 data flows.
In the present example embodiment, data cache module 401 can provide data buffer zone, for caching from multiple
The data of data source can provide four buffer areas such as four data sources (data source 1 to 4), come for caching respectively
From the data of each data source；The buffer area of each data source can be set as a line image data size or a field picture number
According to size.Programming device (FPGA, Field Programmable Gate Array) inside can be used in data buffer zone
RAM (Random Access Memory, random access memory) resource is built, and external memory also can be used, such as
SRAM (Synchronous Dynamic Random Access Memory, Synchronous Dynamic Random Access Memory), DDR
(Double Data Rate, Double Data Rate) SRAM etc..Data cache module 401 can distribute different memory spaces to difference
ARINC818 data flow.Data cache module 401 as requested can be designed as that multiple ARINC818 data flows can be accommodated.
The data buffer zone that data cache module 401 shown in Fig. 4 provides can accommodate 4 difference ARINC818 data stream sizes.However,
The application does not limit this.
In the present example embodiment, when period control module 408 can store the transmission of multiple ARINC818 data flows
Order parameter, and corresponding control signal is generated according to the transmission timing parameter of each ARINC818 data flow, and will be each
The control signal of ARINC818 data flow is sent to host state machine module 402.Wherein, control signal may include that container transmission is opened
Beginning signal, object0 data frame proceed-to-send signal, object2 data frame proceed-to-send signal.
In the present example embodiment, vessel head generation module 404 can be every according to the requirement of host state machine module 402
A ARINC818 data flow generates respective vessel head information, uses for 402 framing of host state machine module.
In the present example embodiment, frame head generation module 405 can be each according to the requirement of host state machine module 402
ARINC818 data flow generates respective FC frame originating point information, uses for 402 framing of host state machine module.
In the present example embodiment, auxiliary data generation module 406 can be according to the requirement of host state machine module 402
Each ARINC818 data flow generates respective auxiliary data, organizes to make when object0 data frame for host state machine module 402
With.
In the present example embodiment, CRC computing module 407 can be main state machine module 402 tissue complete data
Frame calculates and addition CRC check position.
In the present example embodiment, the control that host state machine module 402 can be generated according to period control module 408 is believed
Number successively start the framing process of each video source.The step of framing process may include that container data sends starting, tissue
(including FC frame head, data are net for object0 data frame (include FC frame head, vessel head, auxiliary data), tissue object2 data frame
Lotus).Host state machine module 402 is in framing process, when a data frame (object0 number of first ARINC818 data flow
According to frame or object2 data frame) after the completion of tissue, next ARINC818 data flow is organized at once using timing idle period
Same type data frame (object0 data frame or object2 data frame), and so on until completing all ARINC818
The same type of data frame tissue of data flow.Framing mode in the present exemplary embodiment is different from traditional point-to-point transmission
(individually carrying out framing to single ARINC818 video source).The final output data flow of host state machine module 402 is one mixed
The mixed data flow of multiple ARINC818 data flows is closed, and each individually data flow meets respective time sequence definition and wants
It asks.
In the present exemplary embodiment, output module 403 can be GTX module, for export host state machine module 402
Mixed data flow is converted to high-speed serial signals from parallel signal, and is that fiber-optic signal is transmitted by photoelectric conversion.
Fig. 5 is a kind of flow chart of the method for transmission processing of ARINC818 data flow provided by the embodiments of the present application.This reality
The method for transmission processing for applying example offer can be applied to the receiving device of ARINC818 data, for example, ARINC828 decoding device.
As shown in figure 5, method for transmission processing provided in this embodiment may comprise steps of:
ARINC818 data in step 501, the mixed data flow for receiving and caching at least two ARINC818 data flows
Frame；
The traffic identifier for the ARINC818 data frame that step 502, basis receive, identifies belonging to the ARINC818 data frame
The type of ARINC818 data flow and the ARINC818 data frame；
The ARINC818 data frame that step 503, storage identify.
In one exemplary embodiment, traffic identifier may include sending mark (OX_ID).However, the application to this not
It limits.In other implementations, traffic identifier can be arranged by customized mode.
In one exemplary embodiment, the method for transmission processing of the present embodiment can also include: to check ARINC818 data
Whether the CRC information of frame is correct；The data frame number for checking ARINC818 data flow, identifies the data of the ARINC818 data flow
Whether frame is continuous.
In the present embodiment, multiple ARINC818 data flows can be distinguished by traffic identifier, it is more so as to dissection process
The mixed data flow of a ARINC818 data flow.
The embodiment of the present application also provides a kind of transmission processing device of ARINC818 data flow, comprising: cache module is received,
The ARINC818 data frame in mixed data flow suitable for receiving and caching at least two ARINC818 data flows；Frame checks mould
Block identifies ARINC818 belonging to the ARINC818 data frame suitable for the traffic identifier according to the ARINC818 data frame received
The type of data flow and the ARINC818 data frame；User equipment module, suitable for storing the ARINC818 data identified
Frame.
In one exemplary embodiment, frame inspection module can be adapted to check that the CRC information of ARINC818 data frame is
It is no correct；It checks the data frame number of ARINC818 data flow, identifies whether the data frame of ARINC818 data flow is continuous.
In one exemplary embodiment, receiving cache module may include: input module, the module that reorders and frame buffering
Module.Fig. 6 is a kind of exemplary diagram of the transmission processing device for ARINC818 data flow that the application exemplary embodiment provides.This
The transmission processing device that embodiment provides can be applied to ARINC818 decoding device.As shown in fig. 6, biography provided in this embodiment
Transportation processing equipment may include: input module 601, the module that reorders 602, frame buffer module 603, frame check module 604 and
User equipment module 605.
In the present exemplary embodiment, input module 601 can be GTX module, the high-speed serial signals for will receive
Parallel data signal is converted to, the processing of subsequent module is facilitated.
In the present exemplary embodiment, the module that reorders 602 can reorganize data to the output signal of GTX module 601
Format, identification control character, identification data start/end mark, tissue data output format be accurate data frame format.
In the present exemplary embodiment, frame buffer module 603 can be used to cache ARINC818 data frame.Due to GTX entrance
Data rate is higher, and frame buffer module 603 can at least design two buffer areas according to table tennis principle, and each buffer size can
To be greater than 2112 bytes (i.e. FC frame maximum length)；Wherein, generated after buffer area is full coherent signal to subsequent module at
Reason, while data are received using the storage of another buffer area, so it is recycled.
In the present exemplary embodiment, frame checks that module 604 can identify different ARINC818 data flows according to OX_ID,
The type (object0 data frame or object2 data frame) of ARINC818 data frame is identified simultaneously.Moreover, frame checks module
604 can also check whether the CRC information of each ARINC818 data frame is correct, and carry out frame to each ARINC818 data flow
Serial number inspection, to differentiate whether data frame is continuous.
In the present exemplary embodiment, user equipment module 605 can check the signal of module 604 to every number according to frame
According to frame removing frame head, postamble (CRC), object0 number content frame is extracted, and stores payload user data to different according to configuration
Data buffer area, to complete the identification and storage to mixing ARINC818 data flow.
In the present exemplary embodiment, different storages can be distributed for each ARINC818 data flow by receiving data buffer area
Space.Buffer size can be designed according to row data or field data size, and programming device can be used in buffer area
(FPGA) internal RAM resource or external memory chip (such as SRAM, DDR SRAM etc.).
By the embodiment of the present application, multiple ARINC818 data flows can be transmitted using simple optical fiber based on FPGA, thus
The bandwidth availability ratio of ARINC818 data transmission fiber can be effectively improved, multiple ARINC818 data is reduced significantly and spreads
Defeated equipment cost provides a kind of new implementation for complicated ARINC818 application.
Fig. 7 is that a kind of of the method for transmission processing of ARINC818 data flow provided by the embodiments of the present application applies exemplary diagram.
Compared to the transmission process mode of multi-channel A RINC818 data flow shown in FIG. 1, in application example as shown in Figure 7, it is only necessary to
One multiple data stream ARINC818 encoding device, a multiple data stream ARINC818 decoding device and an optical fiber can be completed four
The transmission of road camera video signal.Wherein, multiple data stream ARINC818 encoding device can receive from camera 71,72,
73 and 74 four circuit-switched data streams, multiple data stream ARINC818 encoding device can be by an optical fiber by the mixing of four circuit-switched data streams
Data stream transmitting gives multiple data stream ARINC818 decoding device；Multiple data stream ARINC818 decoding device, which can identify, to be received
Mixed data flow, and be transferred to display equipment 81,82,83 and 84 respectively and shown.In this way, the bandwidth benefit of simple optical fiber
It can achieve 60% with rate.Compared to transmission process mode shown in FIG. 1, the complexity of multi-channel A RINC818 data stream transmitting processing
Degree is largely improved, and cost is significantly reduced.
In the present example embodiment, multiple data stream ARINC818 encoding device may include at transmission as shown in Figure 4
Device is managed, such as using programmable device FPGA as core, photoelectric conversion module, storage chip of periphery etc. is cooperated to realize.Camera shooting
The video output of head can access FPGA by IO (Input Output, the input and output) pin of FPGA, and inside FPGA
Preliminary treatment is completed, is stored in data flow cache area, subsequent coded treatment realization can be fully according to multichannel shown in Fig. 2
The method of ARINC818 data flow sending side is realized.
In the present example embodiment, multiple data stream ARINC818 decoding device may include at transmission as shown in FIG. 6
Device is managed, for example is cooperated by core of programmable device FPGA, cooperates the photoelectric conversion module, storage chip and output of periphery aobvious
Show interface to realize.Data after the multiple data stream decoding process in Fig. 6 are stored in data buffer area, it is only necessary to be increased
Each data flow can be shown in different display equipment by display interface conversion circuit.
In addition, the embodiment of the present application also provides a kind of computer readable storage medium, it is stored with ARINC818 data flow
Transmission process program, which is performed the step of realizing above-mentioned method for transmission processing, for example, Fig. 2 or Fig. 5
The step of.
It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove
Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain groups
Part or all components may be implemented as by processor, such as the software that digital signal processor or microprocessor execute, or by
It is embodied as hardware, or is implemented as integrated circuit, such as specific integrated circuit.Such software can be distributed in computer-readable
On medium, computer-readable medium may include computer storage medium (or non-transitory medium) and communication media (or temporarily
Property medium).As known to a person of ordinary skill in the art, term computer storage medium is included in for storing information (such as
Computer readable instructions, data structure, program module or other data) any method or technique in the volatibility implemented and non-
Volatibility, removable and nonremovable medium.Computer storage medium include but is not limited to RAM, ROM, EEPROM, flash memory or its
His memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or other
Magnetic memory apparatus or any other medium that can be used for storing desired information and can be accessed by a computer.This
Outside, known to a person of ordinary skill in the art to be, communication media generally comprises computer readable instructions, data structure, program mould
Other data in the modulated data signal of block or such as carrier wave or other transmission mechanisms etc, and may include any information
Delivery media.
Claims (14)
1. a kind of method for transmission processing of ARINC818 data flow characterized by comprising
It receives and caches at least two ARINC818 data flows；
According to the control signal of each ARINC818 data flow, it is inserted into using the timing idle period of single ARINC818 data flow
Remaining ARINC818 data flow, tissue obtain the mixed data flow of at least two ARINC818 data flow；
Export the mixed data flow.
2. the method according to claim 1, wherein the timing using single ARINC818 data flow is idle
Period is inserted into remaining ARINC818 data flow, and tissue obtains the mixed data flow of at least two ARINC818 data flow, wraps
It includes:
After the completion of a data frame tissue of first ARINC818 data flow, the timing of the ARINC818 data flow is utilized
Idle period successively organizes the data frame of the same type of remaining ARINC818 data flow.
3. method according to claim 1 or 2, which is characterized in that the reception simultaneously caches at least two ARINC818 numbers
After stream, the method also includes: corresponding vessel head information, Fibre Channel frame are generated to each ARINC818 data flow
Head information and auxiliary data；
The timing idle period using single ARINC818 data flow is inserted into remaining ARINC818 data flow, and tissue obtains institute
State the mixed data flow of at least two ARINC818 data flows, comprising:
For each ARINC818 data flow, the corresponding FC frame originating point information of the ARINC818 data flow, vessel head information are utilized
And auxiliary data, 0 data frame of organization object utilize the corresponding FC frame originating point information of the ARINC818 data flow, organization object 2
Data frame.
4. the method according to claim 1, wherein the method also includes:
According to the transmission timing parameter of each ARINC818 data flow, corresponding control signal is generated；Wherein, the control signal
Include at least: container sends commencing signal, 2 data frame proceed-to-send signal of 0 data frame proceed-to-send signal of object and object.
5. a kind of method for transmission processing of ARINC818 data flow characterized by comprising
Receive and cache the ARINC818 data frame in the mixed data flow of at least two ARINC818 data flows；
According to the traffic identifier of the ARINC818 data frame, ARINC818 data flow belonging to the ARINC818 data frame is identified
And the type of the ARINC818 data frame；
Store the ARINC818 data frame identified.
6. according to the method described in claim 5, it is characterized in that, the traffic identifier includes sending mark OX_ID.
7. method according to claim 5 or 6, which is characterized in that the method also includes:
Check whether the cyclic redundancy check (CRC) information of the ARINC818 data frame is correct；
The data frame number for checking the ARINC818 data flow, identifies whether the data frame of the ARINC818 data flow connects
It is continuous.
8. a kind of transmission processing device of ARINC818 data flow characterized by comprising
Data cache module, suitable for receiving and caching at least two ARINC818 data flows；
Host state machine module utilizes single ARINC818 data flow suitable for the control signal according to each ARINC818 data flow
Timing idle period be inserted into remaining ARINC818 data flow, tissue obtains the mixing of at least two ARINC818 data flow
Data flow；
Output module is suitable for exporting the mixed data flow.
9. device according to claim 8, which is characterized in that described device further include:
Vessel head generation module is suitable for generating corresponding vessel head information to each ARINC818 data flow；
Frame head generation module is suitable for generating corresponding Fibre Channel frame originating point information to each ARINC818 data flow；
Auxiliary data generation module is suitable for generating corresponding auxiliary data to each ARINC818 data flow；
Wherein, the host state machine module is suitable for being directed to each ARINC818 data flow, utilizes the ARINC818 data flow pair
FC frame originating point information, vessel head information and the auxiliary data answered, 0 data frame of organization object utilize the ARINC818 data flow
Corresponding FC frame originating point information, 2 data frame of organization object.
10. device according to claim 8, which is characterized in that described device further include:
Period control module generates corresponding control signal suitable for the transmission timing parameter according to each ARINC818 data flow；
Wherein, the control signal includes at least: container sends commencing signal, 0 data frame proceed-to-send signal of object and the number of object 2
According to frame proceed-to-send signal.
11. a kind of transmission processing device of ARINC818 data flow characterized by comprising
Receive cache module, the ARINC818 in mixed data flow suitable for receiving and caching at least two ARINC818 data flows
Data frame；
Frame checks that module identifies belonging to the ARINC818 data frame suitable for the traffic identifier according to the ARINC818 data frame
ARINC818 data flow and the ARINC818 data frame type；
User equipment module, suitable for storing the ARINC818 data frame identified.
12. device according to claim 11, which is characterized in that the frame checks module, is further adapted for described in inspection
Whether the cyclic redundancy check (CRC) information of ARINC818 data frame is correct；Check the data frame sequence of the ARINC818 data flow
Number, identify whether the data frame of the ARINC818 data flow is continuous.
13. a kind of computer readable storage medium, which is characterized in that it is stored with the transmission process program of ARINC818 data flow,
The transmission process program is performed the step of realizing method for transmission processing according to any one of claims 1 to 4.
14. a kind of computer readable storage medium, which is characterized in that it is stored with the transmission process program of ARINC818 data flow,
The transmission process program is performed the step of realizing the method for transmission processing as described in any one of claim 5 to 7.
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