CN110049295B - Single optical fiber multipath video transmission receiver - Google Patents
Single optical fiber multipath video transmission receiver Download PDFInfo
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- CN110049295B CN110049295B CN201910314747.7A CN201910314747A CN110049295B CN 110049295 B CN110049295 B CN 110049295B CN 201910314747 A CN201910314747 A CN 201910314747A CN 110049295 B CN110049295 B CN 110049295B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 54
- 239000013307 optical fiber Substances 0.000 title claims abstract description 47
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides a single optical fiber multipath video transmission receiver, comprising: the DVI/HDMI optical fiber conversion module is used for reading in multi-channel DVI or HDMI video data and converting the multi-channel DVI or HDMI video data into serial data; an optical fiber-to-DVI/HDMI module for receiving the serial data and restoring the serial data into multi-channel DVI or HDMI video data; a video playing controller for processing multi-path DVI or HDMI video data and controlling the display of the display screen; the DVI/HDMI changes the optical fiber module and connects gradually the DVI/HDMI changes module and video broadcast controller are changeed to optic fibre. The technical scheme of the invention solves the transmission problem of long-distance single-optical-fiber multi-input video data through the DVI/HDMI-to-optical-fiber module and the optical fiber-to-DVI/HDMI module.
Description
Technical Field
The invention relates to the technical field of video display and optical fiber communication, in particular to a single-optical-fiber multi-channel video transmission receiver.
Background
At present, the LED display technology is mature day by day and is applied to various fields in social life. Meanwhile, outdoor large-scale LED display screens are also widely applied to large-scale shopping malls and building outer walls, and the LED display screens are mainly used for displaying videos, pictures and texts, notifications and the like in real time.
In actual use and construction processes, a single video playing controller has limited control video display area, a plurality of video playing controllers are used for realizing high-resolution large-scale display, and the direct transmission of video data from an upper computer to the plurality of video playing controllers is difficult to realize due to the fact that only one optical fiber channel is possibly reserved in an installation field.
Disclosure of Invention
In light of the above-mentioned problems, a single fiber multiplexed video transmission receiver is provided. The invention solves the transmission problem of long-distance single optical fiber multi-input video data through the DVI/HDMI to optical fiber module and the optical fiber to DVI/HDMI module.
The technical means adopted by the invention are as follows:
a single fiber multiplexed video transmission receiver comprising:
the DVI/HDMI optical fiber conversion module is used for reading in multi-channel DVI or HDMI video data and converting the multi-channel DVI or HDMI video data into serial data;
an optical fiber-to-DVI/HDMI module for receiving the serial data and restoring the serial data into multi-channel DVI or HDMI video data;
a video playing controller for processing multi-path DVI or HDMI video data and controlling the display of the display screen;
the DVI/HDMI changes the optical fiber module and connects gradually the DVI/HDMI changes module and video broadcast controller are changeed to optic fibre.
Further, the DVI/HDMI optical fiber conversion module includes:
the first DVI/HDMI data interface is used for accessing video data;
a decoding unit for performing decoding processing on the accessed video data;
the first FPGA control unit is used for receiving and processing the video data decoded and processed by the decoding unit;
sending the data processed by the first FPGA control unit to a first SFP photoelectric conversion unit of an optical fiber-to-DVI/HDMI module;
the first power supply unit is used for supplying power to the DVI/HDMI-to-optical fiber module;
the data transmission mode of the first DVI/HDMI data interface and the decoding unit is unidirectional transmission, the data transmission mode of the decoding unit and the first FPGA control unit is unidirectional transmission, and the data transmission mode of the first FPGA control unit and the first SFP photoelectric conversion unit is bidirectional transmission.
Further, the optical fiber-to-DVI/HDMI module includes:
the second SFP photoelectric conversion unit is used for receiving the data of the DVI/HDMI converted optical fiber module;
the second FPGA control unit converts serial data received by the optical fiber-to-DVI/HDMI module into parallel data;
the coding unit is used for coding and outputting the data processed by the second FPGA control unit;
a second DVI/HDMI data interface for outputting encoded video data;
the second power supply unit is used for supplying power to the optical fiber-to-DVI/HDMI module;
the data transmission mode of the second SFP photoelectric conversion unit and the second FPGA control unit is bidirectional transmission, the data transmission mode of the second FPGA control unit and the coding unit is unidirectional transmission, and the data transmission mode of the coding unit and the second DVI/HDMI data interface is unidirectional transmission.
Furthermore, data are transmitted between the DVI/HDMI to optical fiber module and the optical fiber to DVI/HDMI module through a single optical fiber.
Compared with the prior art, the invention has the following advantages:
the single-optical-fiber multi-channel video transmission receiver solves the transmission problem of long-distance single-optical-fiber multi-input video data through the DVI/HDMI-to-optical-fiber module and the optical-fiber-to-DVI/HDMI module.
Based on the reasons, the invention can be widely popularized in the fields of large-scale video display, optical fiber communication application and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of the apparatus of the present invention.
FIG. 2 is a block diagram of the DVI/HDMI fiber-to-fiber module hardware of the apparatus of the present invention.
FIG. 3 is a block diagram of the hardware principle of the device of the present invention for converting optical fiber into DVI/HDMI module.
FIG. 4 is a block diagram of the hardware of the main controller of the video playback controller of the present invention.
In the figure: 1. a DVI/HDMI optical fiber conversion module; 11. a first DVI/HDMI data interface; 12. a decoding unit; 13. a first FPGA control unit; 14. a first SFP photoelectric conversion unit; 15. a first power supply unit; 2. the optical fiber is converted into a DVI/HDMI module; 21. a second SFP photoelectric conversion unit; 22. a second FPGA control unit; 23. an encoding unit; 24. a second DVI/HDMI data interface; 25. a second power supply unit; 3. a video play controller; 31. an ARM control unit; 32. a third FPGA control unit; 33. a DVI decoding unit; 34. an external storage unit; 35. a third SFP photoelectric conversion unit; 36. a display unit.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
Examples
As shown in fig. 1, the present invention provides a single-fiber multiplexed video transmission receiver, comprising: the device comprises a DVI/HDMI-to-DVI/HDMI optical fiber module 1, an optical fiber-to-DVI/HDMI module 2 and a video playing controller 3, wherein the DVI/HDMI-to-optical fiber module 1 is sequentially connected with the optical fiber-to-DVI/HDMI module 2 and the video playing controller 3; DVI/HDMI changes optical fiber module 1 and reads in multichannel DVI or HDMI video data, change multichannel DVI or HDMI video data into serial data, send to optical fiber through the single channel optic fibre and change DVI/HDMI module 2, optical fiber changes DVI/HDMI module 2 and receives above-mentioned serial data and restores into multichannel DVI or HDMI video data with it, and send to video broadcast controller 3 through DVI/HDMI data interface, video broadcast controller 3 handles received video data and controls follow-up video display.
As a preferred embodiment of the present invention, as shown in fig. 2, the DVI/HDMI to optical fiber module 1 in the single optical fiber multi-channel video transmission receiver of the present invention includes a first DVI/HDMI data interface 11, a decoding unit 12, a first FPGA control unit 13, a first SFP photoelectric conversion unit 14, and a first power supply unit 15; the data transmission mode of the first DVI/HDMI data interface 11 and the decoding unit 12 is unidirectional transmission, the data transmission mode of the decoding unit 12 and the first FPGA control unit 13 is unidirectional transmission, the data transmission mode of the first FPGA control unit 13 and the first SFP photoelectric conversion unit 14 is bidirectional transmission, the first power supply unit 15 supplies power for the DVI/HDMI-to-optical fiber module 1, the first DVI/HDMI data interface 11 obtains original video data from a plurality of video sources, the video data are sent to the first FPGA control unit 13 in a parallel mode after being decoded by the decoding unit 12, the first FPGA control unit 13 stores the video data into different FIFOs with numbers 1-N in parallel according to different first DVI/HDMI data interfaces 11, if no video data are read in, invalid data are substituted, and data are read from the FIFOs with numbers 1-N in sequence by taking points as units, the parallel data are converted into serial data, the serial data are sent to the first SFP photoelectric conversion unit 14, when the decoding unit 12 sends a line synchronization signal or a field synchronization signal to the first FPGA control unit 13, the first FPGA control unit 13 suspends sending the video data and sends a specific line synchronization character string or a field synchronization character string to the first SFP photoelectric conversion unit 14, and the first SFP photoelectric conversion unit 14 sends the data to the optical fiber-to-DVI/HDMI module 2 through a single optical fiber.
As a preferred embodiment of the present invention, as shown in fig. 3, the fiber-to-DVI/HDMI module 2 in the single-fiber multi-channel video transmission receiver of the present invention includes a second SFP photoelectric conversion unit 21, a second FPGA control unit 22, an encoding unit 23, a second DVI/HDMI data interface 24, and a second power unit 25, where the second power unit 25 supplies power to the fiber-to-DVI/HDMI module 2, a data transmission mode of the second SFP photoelectric conversion unit 21 and the second FPGA control unit 22 is bidirectional transmission, a data transmission mode of the second FPGA control unit 22 and the encoding unit 23 is unidirectional transmission, and a data transmission mode of the encoding unit 23 and the second HDMI/HDMI data interface 24 is unidirectional transmission. The second SFP photoelectric conversion unit 21 directly sends the serial data to the second FPGA control unit 22 after receiving the serial data sent by the DVI/HDMI-to-optical fiber module 1, the second FPGA control unit 22 sequentially sends data to the encoding units 23 corresponding to the second DVI/HDMI data interfaces 24 in order by taking a point as a unit, when the second FPGA control unit 22 receives a specific line synchronization character string or a field synchronization character string, the second FPGA control unit sequentially sends line synchronization or field synchronization signals to the encoding units 23 corresponding to the second DVI/HDMI data interfaces 24 in order, and the encoding units 23 send the video data to the video playing controller 3 through the second DVI/HDMI data interfaces 24 after encoding the video data.
As a preferred embodiment of the present invention, as shown in fig. 4, the video playing controller 3 in the single optical fiber multi-channel video transmission receiver of the present invention includes a DVI decoding unit 33, a third FPGA control unit 32, an ARM control unit 31, a third SFP photoelectric conversion unit 35, and a display unit; the DVI decoding unit 33 decodes the video data sent by the DVI/HDMI module 2, the ARM control unit 31 controls the third FPGA control unit 32 to read the decoded video data from the external storage unit 34, the third SFP photoelectric conversion unit 35 sends the processed video data to the main controller, and the display unit 36 displays the video data.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A single fiber multiplexed video transmission receiver comprising:
a DVI/HDMI optical fiber conversion module (1) for reading in multi-channel DVI or HDMI video data and converting the multi-channel DVI or HDMI video data into serial data; the DVI/HDMI changes optic fibre module (1) includes:
a first DVI/HDMI data interface (11) for accessing video data;
a decoding unit (12) for performing decoding processing on the accessed video data;
a first FPGA control unit (13) for receiving and processing the video data decoded by the decoding unit (12);
sending the data processed by the first FPGA control unit (13) to a first SFP photoelectric conversion unit (14) of the optical fiber-to-DVI/HDMI module (1);
the first power supply unit (15) is used for supplying power to the DVI/HDMI optical fiber conversion module (1);
the first DVI/HDMI data interface (11) obtains original video data from a plurality of video sources, the original video data are decoded by the decoding unit (12) and then sent to the first FPGA control unit (13), the first FPGA control unit (13) stores the video data in different FIFOs with the numbers of 1-N in parallel according to different first DVI/HDMI data interfaces (11), if no video data is read in, invalid data is substituted, data is read from the FIFOs with the numbers of 1-N in sequence by taking a point as a unit, the parallel data are converted into serial data, the serial data are sent to the first SFP photoelectric conversion unit (14), when the decoding unit (12) sends a line synchronization or field synchronization signal to the first FPGA control unit (13), the first FPGA control unit (13) suspends the sending of the video data, and sends a specific line synchronization character string or field synchronization character string to the first SFP photoelectric conversion unit (14), the first SFP photoelectric conversion unit (14) sends the data to the optical fiber-to-DVI/HDMI module (2) through a single optical fiber;
an optical fiber-to-DVI/HDMI module (2) for receiving the serial data and restoring the serial data into multi-path DVI or HDMI video data; the optical fiber-to-DVI/HDMI module (2) comprises:
a second SFP photoelectric conversion unit (21) for receiving data of the DVI/HDMI optical fiber conversion module (1);
a second FPGA control unit (22) which converts the serial data received by the optical fiber-to-DVI/HDMI module (2) into parallel data;
a coding unit (23) for coding and outputting the data processed by the second FPGA control unit (22);
a second DVI/HDMI data interface (24) for outputting encoded video data;
a second power supply unit (25) for supplying power to the optical fiber-to-DVI/HDMI module (2);
after receiving the serial data sent by the DVI/HDMI optical fiber conversion module (1), the second SFP photoelectric conversion unit (21) directly sends the serial data to the second FPGA control unit (22), the second FPGA control unit (22) sequentially sends data to the coding units (23) corresponding to the second DVI/HDMI data interfaces (24) in a point unit, when the second FPGA control unit (22) receives a specific line synchronization character string or a field synchronization character string, the second FPGA control unit sequentially sends line synchronization or field synchronization signals to the coding units (23) corresponding to the second DVI/HDMI data interfaces (24), and the coding units (23) send the video data to the video playing controller (3) through the second DVI/HDMI data interfaces (24) after coding the video data;
a video playing controller (3) for processing multi-path DVI or HDMI video data and controlling the display of the display screen;
the DVI/HDMI-to-optical fiber module (1) is sequentially connected with the optical fiber-to-DVI/HDMI module (2) and the video playing controller (3);
DVI/HDMI changes fiber module (1) and reads in multichannel DVI or HDMI video data, change multichannel DVI or HDMI video data into serial data, send to optical fiber through single way optic fibre and change DVI/HDMI module (2), optical fiber changes DVI/HDMI module (2) and receives above-mentioned serial data and restores into multichannel DVI or HDMI video data with it, and send to video broadcast controller (3) through DVI/HDMI data interface, video broadcast controller (3) handle received video data and control follow-up video display.
2. The single-fiber multiplexed video transmission receiver according to claim 1, wherein the data transmission mode between the first DVI/HDMI data interface (11) and the decoding unit (12) is unidirectional transmission, the data transmission mode between the decoding unit (12) and the first FPGA control unit (13) is unidirectional transmission, and the data transmission mode between the first FPGA control unit (13) and the first SFP photoelectric conversion unit (14) is bidirectional transmission.
3. The single-fiber multiplexed video transmission receiver according to claim 1, wherein the data transmission modes of the second SFP photoelectric conversion unit (21) and the second FPGA control unit (22) are bidirectional transmission, the data transmission modes of the second FPGA control unit (22) and the encoding unit (23) are unidirectional transmission, and the data transmission modes of the encoding unit (23) and the second DVI/HDMI data interface (24) are unidirectional transmission.
4. Single fiber multiplexed video transmission receiver according to claim 1, characterized in that the DVI/HDMI to fiber module (1) and the fiber to DVI/HDMI module (2) transmit data therebetween via a single fiber.
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| CN112825556B (en) * | 2019-11-21 | 2021-09-21 | 北京仁光科技有限公司 | Photoelectric return partition interaction system for interacting signal sources in each subnet |
| CN111145528A (en) * | 2019-12-28 | 2020-05-12 | 中国船舶重工集团公司第七一七研究所 | Multi-source data transmission device and method based on single-path optical fiber |
| CN111479096A (en) * | 2020-03-12 | 2020-07-31 | 合肥赛为智能有限公司 | Optical fiber signal encoder and method thereof |
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