CN109194936A - The uncompressed optical fiber transmission of two interface images of one kind and display device - Google Patents
The uncompressed optical fiber transmission of two interface images of one kind and display device Download PDFInfo
- Publication number
- CN109194936A CN109194936A CN201811321275.XA CN201811321275A CN109194936A CN 109194936 A CN109194936 A CN 109194936A CN 201811321275 A CN201811321275 A CN 201811321275A CN 109194936 A CN109194936 A CN 109194936A
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- China
- Prior art keywords
- sdi
- interface
- fpga
- optical fiber
- transmission
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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
-
- 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
Abstract
The invention belongs to technical field of data transmission, and in particular to a kind of two interface of SDI, LVDS is infrared, the uncompressed optical fiber of visible images transmits and display device.The present invention is single for conventional images fiber transmission device image input interface, scalability is poor, the big disadvantage of compression loss, proposes that a kind of two interface of SDI, LVDS is infrared, the uncompressed optical fiber of visible images transmits and display device.The device has two class image input interface of SDI and LVDS, and FPGA completes uncompressed image data transmitting/receiving, arrangement, encoding and decoding, and optical fiber transmits after high-speed optical-electric module realizes photoelectric signal transformation, is finally used for image procossing and display with the output of SDI interface.The present invention can reduce the image-capable requirement of front end imager, realize long-range scan picture and display, improve system design, lay flexibility, reduce system inner fiber transmission device quantity, simplify the connection of system cable, save development cost.
Description
Technical field
The invention belongs to technical field of data transmission, and in particular to a kind of two interface of SDI, LVDS is infrared, visible images
Uncompressed optical fiber transmission and display device, particularly suitable infrared and visible light high-resolution, images with large data volume data long distance
From transmission, processing and display application.
Background technique
Fiber optic communication has many advantages, such as transmission loss is low, distance is remote, electromagnetism interference, high confidentiality, answers extensively
For military, civil field.
Currently, the fiber transmission device for field of image transmission is concentrated mainly on the visible images of common color space
Aspect.Sending device, receiving device use single type interface in conventional images fiber transmission device.To reduce fiber bandwidth speed
The requirement of rate generallys use full frame image caching, compression and decompression technique.The delay of existing fiber transmitting device image is high, compression
Loss is big, cannot achieve the requirement that remote image is handled in real time, and is not able to satisfy infrared and visible images Simultaneous Transmission of Data
Demand.
Summary of the invention
(1) technical problems to be solved
The present invention proposes a kind of uncompressed optical fiber transmission of two interface images and display device, with solve how to realize it is infrared and
Visible images data receive simultaneously and the uncompressed image low delay transmission of big data quantity is handled in real time with remote image and aobvious
The technical issues of showing.
(2) technical solution
In order to solve the above-mentioned technical problem, the present invention proposes that a kind of uncompressed optical fiber of two interface images transmits and display fills
It sets, which includes sending device and receiving device；Wherein,
Sending device includes SDI input interface, LVDS input interface, sends core circuit, sends optical fiber interface, LVDS solution
String device sends FPGA, SDI deserializer, sends optical-electric module and single mode optical fiber；Wherein,
LVDS deserializer sends FPGA, SDI deserializer and sends photoelectric module electric on transmission core circuit；It can be seen that
Light image inputs SDI deserializer by SDI input interface, and sending FPGA will be seen that light image row caches；Infrared image passes through
LVDS input interface inputs LVDS deserializer, sends FPGA and caches infrared image row；FPGA is sent to press received row image
It is ranked up according to time sequencing, the first row image data of sorting encodes point by point, utilizes the high speed for sending FPGA and being internally integrated
Transceiver is exported to transmission optical-electric module；It sends optical-electric module and converts electrical signals to optical signal, by sending optical fiber interface, lead to
Single mode optical fiber is crossed to be transmitted to receiving device；
Receiving device includes reception optical fiber interface, receives core circuit, receive optical-electric module, receive FPGA, SDI encoder
With SDI output interface；Wherein,
It receives optical-electric module, receive FPGA and SDI encoder Denso on receiving core circuit；Optical-electric module is received to pass through
Reception optical fiber interface, output extremely receives FPGA after the optical signal that single mode optical fiber inputs is converted to electric signal；Utilize reception FPGA
The high-speed transceiver being internally integrated receives and decodes image dot data, and it is slow to carry out row respectively according to visible images, infrared image
It deposits；It receives FPGA to export image data to SDI encoder, then through SDI output interface corresponding with SDI encoder output figure
Picture.
Further, sending device further includes sending power interface, by sending power interface as sending device power supply.
Further, sending device further includes transmission indicator, sends the bright dark, sudden strain of a muscle of LED of FPGA control transmission indicator
Bright mark sending device working condition.
Further, receiving device further includes receiving power interface, by receiving power interface as receiving device power supply.
Further, receiving device further includes receiver-indicator, receives the bright dark, sudden strain of a muscle of LED that FPGA controls and receives indicator
Bright mark receiving device working condition.
Further, SDI encoder includes multiple SDI encoders；SDI output interface includes multiple SDI output interfaces.
In addition, the present invention also proposes that a kind of uncompressed optical fiber of two interface images transmits and display methods, this method use upper
State any device；Wherein, this method comprises the following steps:
S1, visible images input SDI deserializer by SDI input interface, and infrared image is defeated by LVDS input interface
Enter LVDS deserializer；
S2, the image data that FPGA receives SDI deserializer, LVDS deserializer is sent, it will be seen that light, infrared image are gone respectively
Caching；It sends FPGA to be ranked up received row image sequentially in time, the first row image data of sorting is compiled point by point
Code is exported using the high-speed transceiver that FPGA is internally integrated is sent to optical-electric module is sent；
S3, the input that optical-electric module receives the high-speed transceiver that transmission FPGA is internally integrated is sent, converted electrical signals to
Optical signal is transmitted by single mode optical fiber to receiving device by sending optical fiber interface；
S4, optical-electric module is received by reception optical fiber interface, after the optical signal that single mode optical fiber inputs is converted to electric signal
Output extremely receives FPGA；
S5, it receives FPGA and receives and decode image dot data using the high-speed transceiver that is internally integrated, according to visible light, red
Outer image carries out capable caching respectively；
Image data is exported to SDI encoder, then exports image through corresponding SDI output interface by S6, reception FPGA.
(3) beneficial effect
The uncompressed optical fiber of two interface images proposed by the present invention transmits and display device, the device include sending device and connect
Receiving unit, wherein sending device include SDI input interface, LVDS input interface, send core circuit, send optical fiber interface,
LVDS deserializer, transmission FPGA, SDI deserializer, transmission optical-electric module and single mode optical fiber, receiving device include that reception optical fiber connects
Mouth receives core circuit, receives optical-electric module, receives FPGA, SDI encoder and SDI output interface.The present invention is directed to existing figure
Picture fiber transmission device image input interface is single, scalability is poor, and the big disadvantage of compression loss proposes that a kind of SDI, LVDS two connects
Lipstick is outer, the uncompressed optical fiber of visible images transmits and display device.There is the device SDI and the input of two class image of LVDS to connect
Mouthful, FPGA completes uncompressed image data transmitting/receiving, arrangement, encoding and decoding, and high-speed optical-electric module realizes light after photoelectric signal transformation
Fibre transmission is finally used for image procossing and display with the output of SDI interface.The present invention can reduce the image procossing energy of front end imager
Force request realizes long-range scan picture and display, improves system design, lays flexibility, reduces the transmission of system inner fiber
Number of devices simplifies the connection of system cable, saves development cost.
Detailed description of the invention
Fig. 1 is the uncompressed optical fiber transmission of two interface images and display device composition block diagram of the embodiment of the present invention.
Wherein, 1.SDI input interface, 2.LVDS input interface, 3. sending device outer housings, 4. transmission power interfaces, 5.
Core circuit is sent, 6. send optical fiber interface, and 7.LVDS deserializer, 8. send FPGA, and 9.SDI deserializer, 10. send instruction
Device, 11. send optical-electric modules, and 12. single mode optical fibers, 13. reception optical fiber interfaces, 14. receive power interfaces, outside 15. receiving devices
Shell, 16. reception core circuits, 17. reception optical-electric modules, 18. receiver-indicators, 19. reception FPGA, 20.SDI encoder 1,
21.SDI encoder 2,22.SDI encoder 3,23.SDI output interface 1,24.SDI output interface 2,25.SDI output interface 3.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to tool of the invention
Body embodiment is described in further detail.
The present embodiment proposes that a kind of uncompressed optical fiber of two interface images transmits and display device, composition are as shown in Figure 1.It should
Device includes sending device and receiving device.
Sending device include SDI input interface 1, LVDS input interface 2, sending device outer housing 3, send power interface 4,
Core circuit 5 is sent, optical fiber interface 6, LVDS deserializer 7 is sent, sends FPGA8, SDI deserializer 9, transmission indicator 10, hair
Send optical-electric module 11 and single mode optical fiber 12.Wherein,
Each composition of sending device is partly installed in sending device outer housing 3, and LVDS deserializer 7 sends FPGA8, SDI
Deserializer 9, transmission indicator 10 and transmission 11 Denso of optical-electric module are on sending core circuit 5.Visible images are defeated by SDI
Incoming interface 1 inputs SDI deserializer 9, and sending FPGA8 will be seen that light image row caches.Infrared image is defeated by LVDS input interface 2
Enter LVDS deserializer 7, sends FPGA8 and cache infrared image row.Send FPGA8 to received row image sequentially in time into
Row sequence, the first row image data of sorting encode point by point, using send the high-speed transceiver that FPGA8 is internally integrated export to
Send optical-electric module 11.It sends optical-electric module 11 and converts electrical signals to optical signal, by sending optical fiber interface 6, pass through single mode
Optical fiber 12 is transmitted.Power interface 4 is sent as sending device power supply, the LED for sending FPGA8 control transmission indicator 10 is bright
Secretly, flashing mark sending device working condition.
Receiving device includes reception optical fiber interface 13, receives power interface 14, receiving device outer housing 15, receives core electricity
Road 16 receives optical-electric module 17, receiver-indicator 18, receives FPGA19, SDI encoder 120, SDI encoder 221, SDI coding
Device 322, SDI output interface 123, SDI output interface 224, SDI output interface 325.
Each composition of receiving device is partly installed in receiving device outer housing 15, is received optical-electric module 17, is received instruction
Device 18 receives FPGA19, SDI encoder 120, SDI encoder 221 and 322 Denso of SDI encoder in reception core circuit 16
On.Optical-electric module 17 is received by reception optical fiber interface 13, the optical signal that single mode optical fiber 12 inputs is converted to defeated after electric signal
FPGA19 is received out.Image dot data is received and decodes using the high-speed transceiver that FPGA19 is internally integrated is received, according to visible
Light image, infrared image carry out capable caching respectively.Receive FPGA19 image data is exported to multiple SDI encoders, then through pair
Answer SDI output interface output image for handling and showing.Three groups of SDI encoders and SDI output interface are complete in receiving device
Identical, output processing and display image can be exchanged arbitrarily.Power interface 14 is received as receiving device power supply, receives FPGA19 control
Bright dark, the flashing mark receiving device working condition of the LED of receiver-indicator 18.
Using the transmission of two interface images of the present embodiment uncompressed optical fiber and display device, image transmitting and display are carried out
Step includes:
S1, visible images input SDI deserializer 9 by SDI input interface 1, and infrared image passes through LVDS input interface 2
Input LVDS deserializer 7；
S2, the image data that FPGA8 receives SDI deserializer 9, LVDS deserializer 7 is sent, it will be seen that light figure, infrared image
Row caching respectively；It sends FPGA8 to be ranked up received row image sequentially in time, by the first row image data that sorts
Point-by-point coding is exported using the high-speed transceiver that FPGA8 is internally integrated is sent；
S3, the input that optical-electric module 11 receives the high-speed transceiver that transmission FPGA8 is internally integrated is sent, electric signal is converted
It is transmitted by single mode optical fiber 12 to receiving device for optical signal by sending optical fiber interface 6；
S4, optical-electric module 17 is received by reception optical fiber interface 13, the optical signal that single mode optical fiber 12 inputs is converted into electricity
Output extremely receives FPGA19 after signal；
S5, reception FPGA19 receive and decode image dot data using the high-speed transceiver being internally integrated, according to visible light
Image, infrared image carry out capable caching respectively；
Image data is exported to SDI encoder, then exports image through corresponding SDI output interface by S6, reception FPGA19
For handling and showing.
Specific embodiment is as follows:
Visual light imaging device exports 3G-SDI digital picture, image resolution ratio 1920*1080, bit wide 24bit, and frame frequency is
50Hz, unpacked data amount 2.3210Gbps；
Infrared imaging device output LVDS digital picture, image resolution ratio 640*512, locating depth 14bit, frame frequency 50Hz,
Unpacked data amount 0.22Gbps；
SDI deserializer selects TI company LMH0341；
SDI encoder selects TI company LMH0340；
LVDS deserializer selects MAXIM company MAX9248；
FPGA selects ALTERA company 5CSXFC6D6F31I7N；
Optical-electric module selects Air China's photoelectricity HTS2301-AF；
The device of above-mentioned visible images, infrared image through this embodiment carries out 1km transmission, it is seen that the whole frame of light image prolongs
When be 17.8us, it is seen that light image whole frame delay is 16us, and delay is much smaller than picture frame period 20ms, non-depressed contract drawing after transmission
Long-range processing in real time is completed as SDI interface image processing equipment can be inputted, while can access SDI interface image and showing that equipment is realized
Long-range monitoring.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of uncompressed optical fiber of two interface images transmits and display device, which is characterized in that described device includes sending device
And receiving device；Wherein,
The sending device includes SDI input interface, LVDS input interface, sends core circuit, sends optical fiber interface, LVDS solution
String device sends FPGA, SDI deserializer, sends optical-electric module and single mode optical fiber；Wherein,
The LVDS deserializer sends FPGA, SDI deserializer and sends photoelectric module electric on the transmission core circuit；
Visible images input the SDI deserializer by the SDI input interface, and the transmission FPGA is by the visible images row
Caching；Infrared image inputs the LVDS deserializer by the LVDS input interface, and the transmission FPGA is by infrared image row
Caching；The transmission FPGA is ranked up received row image sequentially in time, by sort first row image data by
Point coding, is exported using the high-speed transceiver that the transmission FPGA is internally integrated to the transmission optical-electric module；The transmission light
Electric module converts electrical signals to optical signal, by the transmission optical fiber interface, is set by the single mode optical fiber to the reception
It is standby to be transmitted；
The receiving device includes reception optical fiber interface, receives core circuit, receive optical-electric module, receive FPGA, SDI encoder
With SDI output interface；Wherein,
The reception optical-electric module receives FPGA and SDI encoder Denso on the reception core circuit；The reception photoelectricity
Module is exported after the optical signal that the single mode optical fiber inputs is converted to electric signal to the institute by the reception optical fiber interface
It states and receives FPGA；Image dot data is received and decodes using the high-speed transceiver that the reception FPGA is internally integrated, according to visible
Light image, infrared image carry out capable caching respectively；The reception FPGA exports image data to the SDI encoder, then passes through
SDI output interface corresponding with the SDI encoder exports image.
2. device as described in claim 1, which is characterized in that the sending device further includes sending power interface, passes through institute
It states and sends power interface as sending device power supply.
3. device as described in claim 1, which is characterized in that the sending device further includes transmission indicator, the transmission
The bright dark, flashing of LED that FPGA controls the transmission indicator identifies the sending device working condition.
4. device as described in claim 1, which is characterized in that the receiving device further includes receiving power interface, passes through institute
It states and receives power interface as receiving device power supply.
5. device as described in claim 1, which is characterized in that the receiving device further includes receiver-indicator, the reception
The bright dark, flashing of LED that FPGA controls the receiver-indicator identifies the receiving device working condition.
6. device as described in claim 1, which is characterized in that the SDI encoder includes multiple SDI encoders；The SDI
Output interface includes multiple SDI output interfaces.
7. a kind of uncompressed optical fiber of two interface images transmits and display methods, which is characterized in that the method is using any of the above-described
Device described in item claim；Wherein, described method includes following steps:
S1, visible images input the SDI deserializer by the SDI input interface, and infrared image is defeated by the LVDS
Incoming interface inputs the LVDS deserializer；
S2, the transmission FPGA receive the image data of the SDI deserializer, LVDS deserializer, it will be seen that light, infrared image point
It Hang not cache；The transmission FPGA is ranked up received row image sequentially in time, by the first row picture number that sorts
According to point-by-point coding, exported using the high-speed transceiver that the transmission FPGA is internally integrated to the transmission optical-electric module；
S3, the input for sending optical-electric module and receiving the high-speed transceiver that the transmission FPGA is internally integrated, electric signal is turned
It is changed to optical signal, by the transmission optical fiber interface, is transmitted by the single mode optical fiber to the receiving device；
The optical signal that the single mode optical fiber inputs is converted to telecommunications by reception optical fiber interface by S4, the reception optical-electric module
It exports after number to the reception FPGA；
S5, it is described receive FPGA and receive and decode image dot data using the high-speed transceiver that is internally integrated, according to visible light, red
Outer image carries out capable caching respectively；
S6, the reception FPGA export image data to the SDI encoder, then defeated through the corresponding SDI output interface
Image out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811321275.XA CN109194936A (en) | 2018-11-07 | 2018-11-07 | The uncompressed optical fiber transmission of two interface images of one kind and display device |
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| CN201811321275.XA CN109194936A (en) | 2018-11-07 | 2018-11-07 | The uncompressed optical fiber transmission of two interface images of one kind and display device |
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Citations (3)
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| CN101662671A (en) * | 2009-09-10 | 2010-03-03 | 中国科学院长春光学精密机械与物理研究所 | Method based on FPGA for transmitting images of multiple digital cameras |
| CN103139553A (en) * | 2011-11-29 | 2013-06-05 | 上海全维光纤网络系统有限公司 | Device of multimedia signal transmission and conversion and system thereof |
-
2018
- 2018-11-07 CN CN201811321275.XA patent/CN109194936A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253786A2 (en) * | 2001-04-23 | 2002-10-30 | Leitch Technology International Inc. | Data monitoring system |
| CN101662671A (en) * | 2009-09-10 | 2010-03-03 | 中国科学院长春光学精密机械与物理研究所 | Method based on FPGA for transmitting images of multiple digital cameras |
| CN103139553A (en) * | 2011-11-29 | 2013-06-05 | 上海全维光纤网络系统有限公司 | Device of multimedia signal transmission and conversion and system thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王鑫、段晓超: "视频监控系统在系留气球中的应用", 《计算机光盘软件与应用》 * |
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