CN208656773U - High-definition multimedia interface fiber transmission device - Google Patents
High-definition multimedia interface fiber transmission device Download PDFInfo
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- CN208656773U CN208656773U CN201821310238.4U CN201821310238U CN208656773U CN 208656773 U CN208656773 U CN 208656773U CN 201821310238 U CN201821310238 U CN 201821310238U CN 208656773 U CN208656773 U CN 208656773U
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- hdmi
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- definition multimedia
- multimedia interface
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Abstract
The utility model provides a kind of high-definition multimedia interface fiber transmission device comprising sequentially connected HDMI input unit, transmitter, receiver and HDMI output unit；Fiber optic cable is connected between the transmitters and receivers；The transmitter is also connected with ring and goes out unit；The HDMI signal inputted by the HDMI input unit becomes two groups of signals after transmitter conversion, and one group of HDMI signal is sent to the receiver, and another group of HDMI signal goes out unit by the ring and carry out local output.The utility model transmits TMDS signal using fiber optic cable, in the stability for guaranteeing that signal can also be improved while overlength distance transmission；The HDMI signal of HDMI input unit input can be monitored by going out unit in input terminal setting ring, to guarantee the accuracy of signal transmission.
Description
Technical field
The utility model belongs to multimedia transport technology field, and in particular to a kind of high-definition multimedia interface optical fiber biography
Defeated device.
Background technique
With the high speed development of multimedia technology, people propose increasingly higher demands to multimedia transmission quality.
People especially increase the demand of high-definition multimedia, and the multimedia of simple transmission video or audio signal is no longer satisfied existing
The demand of generation society.HDMI (High Definition Multimedia Interface, high-definition multimedia interface) is
A kind of digitized video/audio interface technology, HDMI connecting line can transmit to high-quality uncompressed HD video and more
Channel audio data, the maximum data transmission speed are 5Gbps.Turn before synchronous signal transmission without carrying out D/A or analog/digital
It changes, so that it may guarantee the video-audio signal transmission of best quality.However, HDMI transmission range is limited in the prior art, cannot achieve
Remote high-definition signal transmission.
Utility model content
In view of this, the technical problem to be solved by the present invention is to provide a kind of high-definition multimedia interface optical fiber
Transmitting device, the device can not only guarantee that overlength distance transmits, additionally it is possible to improve the stability of signal.
In order to solve the above-mentioned technical problem, the utility model provides a kind of high-definition multimedia interface optical fiber transmission dress
It sets comprising sequentially connected HDMI input unit, transmitter, receiver and HDMI output unit；The transmitter and reception
Fiber optic cable is connected between device；The transmitter is also connected with ring and goes out unit；It is inputted by the HDMI input unit
HDMI signal becomes two groups of signals after transmitter conversion, and one group of HDMI signal is sent to the receiver, and another group
HDMI signal goes out unit by the ring and carries out local output.
Further, one group of HDMI signal for being sent to the receiver includes the original TMDS signal in four tunnels, and described four
The original TMDS signal in road is converted into being sent to the receiver by four fiber optic cables after four road optical signals.
Further, the transmitter includes sequentially connected HDMI decompression machine, separation decipher, the first optical fiber transceiving mould
Block and optical fiber sending port；HDMI decompression machine is connect with HDMI input unit, and the optical fiber sending port is connect with fiber optic cable.
Further, the signal transmitted between the HDMI input unit and HDMI decompression machine have four road TMDS signals,
DDC signal, all the way CEC signal, all the way POEWR power supply signal and HPD signal all the way all the way.
Further, the HDMI decompression machine uses the chip of model EP91C1E, and the separation decipher uses type
Number be ITE6661 chip.
Further, it includes the first HDMI compressor and the first sub- output unit of HDMI that the ring, which goes out unit,；Described first
The input terminal of HDMI compressor separates decipher connection with described, and output end is connect with the sub- output unit of the first HDMI.
Further, the receiver includes sequentially connected optical fiber receiving port, the second optical fiber receiver-transmitter module and separation
Encryption equipment；The output unit includes the 2nd HDMI compressor, the sub- output unit of the 2nd HDMI, the 3rd HDMI compressor and third
The sub- output unit of HDMI；The input of the input terminal and the 3rd HDMI compressor of the separation encryption equipment and the 2nd HDMI compressor
End connection, the output end of the 2nd HDMI compressor are connect with the 2nd sub- output unit of HDMI, the 3rd HDMI compressor
Output end connect with the 3rd sub- output unit of HDMI.
Further, described first to third compressor use model EP91C1E chip.
Further, the fiber optic cable is provided with more, passes through between two adjacent fiber optic cables respectively arranged
Fibre-optical splice is detachably connected.
Further, power supply module, the confession are additionally provided in the high-definition multimedia interface fiber transmission device
Electric module uses voltage-stablizer to power for the transmitters and receivers.
Above-mentioned specific embodiment according to the present utility model is it is found that at least have the advantages that the utility model
TMDS signal is transmitted using fiber optic cable, in the stability for guaranteeing that signal can also be improved while overlength distance transmission.This reality
The HDMI signal of HDMI input unit input can be monitored with novel by going out unit in input terminal setting ring, to protect
Demonstrate,prove the accuracy of signal transmission.In addition, fiber optic cable is arranged more, pass through respectively arranged light between adjacent two fiber optic cables
Fine connector is detachably connected, can greatly increase transmission range in this way, and facilitates engineering wiring and installation.
It is to be understood that above-mentioned general description and following specific embodiments are merely illustrative and illustrative, not
The range to be advocated of the utility model can be limited.
Detailed description of the invention
Following appended attached drawing is the part of specification of the utility model, and it illustrates the exemplary of the utility model
Embodiment, appended attached drawing are used to illustrate the principles of the present invention together with the description of specification.
Fig. 1 is a kind of high-definition multimedia interface fiber transmission device that specific embodiment of the present invention provides
One of structural schematic diagram.
Fig. 2 is a kind of high-definition multimedia interface fiber transmission device that specific embodiment of the present invention provides
Second structural representation.
Specific embodiment
For the objectives, technical solutions, and advantages of the embodiments of the present invention are more clearly understood, below will with attached drawing and
The spirit for clearly illustrating the utility model disclosure is described in detail, and any skilled artisan is understanding this reality
After the embodiment of new content, when the technology that can be taught by the content of the present invention, it is changed and modifies, do not take off
Spirit and scope from the content of the present invention.
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, but is not intended as practical to this
Novel restriction.In addition, in the drawings and embodiments the use of element/component of same or like label is for representing phase
Same or similar portions.
About " first " used herein, " second " ... etc., not especially censure the meaning of order or cis-position,
It is non-to limit the utility model, only for distinguish with same technique term description element or operation.
About direction term used herein, such as: upper and lower, left and right, front or rear etc. are only the sides with reference to attached drawing
To.Therefore, the direction term used is intended to be illustrative and not intended to limit this creation.
It is open term, i.e., about "comprising" used herein, " comprising ", " having ", " containing " etc.
Mean including but not limited to.
About it is used herein " and/or ", including any of the things or all combination.
It include " two " and " two or more " about " multiple " herein；It include " two groups " about " multiple groups " herein
And " more than two ".
About term used herein " substantially ", " about " etc., to modify it is any can be with the quantity or mistake of microvariations
Difference, but this slight variations or error can't change its essence.In general, microvariations that such term is modified or error
Range in some embodiments can be 20%, in some embodiments can be 10%, can be in some embodiments 5% or its
His numerical value.It will be understood by those skilled in the art that the aforementioned numerical value referred to can be adjusted according to actual demand, it is not limited thereto.
It is certain to describe the word of the application by lower or discuss in the other places of this specification, to provide art technology
Personnel's guidance additional in relation to the description of the present application.
As shown in Figure 1, this application provides a kind of high-definition multimedia interface fiber transmission devices comprising sequentially connect
HDMI input unit 1, transmitter 2, receiver 3 and the HDMI output unit 4 connect.Light is connected between transmitter 2 and receiver 3
Fine cable 5.Transmitter 2 is also connected with ring and goes out unit 6.It is converted by the HDMI signal that HDMI input unit 1 inputs through transmitter 2
Become two groups of signals afterwards, one group of HDMI signal is sent to receiver 3, and another group of HDMI signal goes out unit 6 by ring and carry out local
Output.Help to be monitored the HDMI signal that HDMI input unit 1 inputs by the HDMI signal that ring goes out the output of unit 6.
Specifically, one group of HDMI signal for being sent to receiver 3 includes the original TMDS signal in four tunnels, and transmitter 2 is original by four tunnels
TMDS signal is converted into being sent to receiver 3 by four fiber optic cables 5 after four road optical signals.Four four Lu Guang of road TMDS signal
Signal transmission, often satisfy the need signal independent operating, more stable.
As shown in Fig. 2, transmitter 2 includes sequentially connected HDMI decompression machine 21, separation decipher 22, the first optical fiber transceiving
Module 23 and optical fiber sending port 24, optical fiber sending port 24 are connect with fiber optic cable 5.HDMI decompression machine 21 and HDMI input are single
Member 1 connects.HDMI video and audio signal transmission channel use TMDS (Time Minimized Differential
Signal differential signal transmission) is minimized.The HDMI signal of 21 pairs of HDMI decompression machine inputs is sent to separation after unziping it
Decipher 22.HDMI signal after 22 pairs of decipher decompressions of separation is separated into two paths of signals after being decrypted, and passes through light all the way
Fine transceiver module carries out electro-optic conversion, is converted into optical signal and is transmitted at a distance by optical fiber sending port 24, another way hair
It gives ring and goes out unit 6 and carry out local output.
Specifically, the signal transmitted between HDMI input unit 1 and HDMI decompression machine 21 has four road TMDS signals, all the way
DDC signal, all the way CEC signal, all the way POEWR power supply signal and all the way HPD signal.
Wherein, three road TMDS signal paths transmit R, G, B three primary colors, and HV coding transmits in B signal channel, the channel R, G
Extra location transmission audio signal.One group of TMDS signal passes through transmission clock signal.Clock signal is passed by fiber optic cable 5
It is defeated, it can be ensured that signal is undistorted.
DDC (Display Data Channel shows data channel) is used to send configuration information to video receiving apparatus
And data format information.Reception device reads the information of enhancing expanded display recognition data.
CEC (Consumer Electronics Control, consumer electronics control channel) can control HDMI CEC
It interacting between the equipment on Network and controls.
HPD (Hot Plug Detect, hot-swappable inquiry control) is for controlling whether that lower end equipment is allowed to read DDC data.
Specifically, HDMI decompression machine uses the chip of model EP91C1E.By the solution of the chip of model EP91C1E
HDMI signal is sent to separation decipher 22 by compression.Decipher 22 is separated using the chip of model ITE6661.From model
The four road TMDS signals exported for the chip of ITE6661 pass through four road laser diodes, lead to after converting the electrical signal to optical signal
It crosses optical fiber sending port 24 and fiber optic cable 5 is transmitted.
As shown in Fig. 2, it includes the first HDMI compressor 61 and the sub- output unit 62 of the first HDMI that ring, which goes out unit 6,.First
The input terminal of HDMI compressor 61 is connected with decipher 22 is separated, and output end is connect with the sub- output unit 62 of the first HDMI.It is logical
While crossing the input HDMI signal of HDMI input unit 1
As shown in Fig. 2, receiver 3 includes optical fiber receiving port 31, the second optical fiber receiver-transmitter module 32 and separation encryption equipment 33.
Optical fiber receiving port 31, the second optical fiber receiver-transmitter module 32 and separation encryption equipment 33 are sequentially connected with.
Output unit 4 includes the 2nd HDMI compressor 41, the sub- output unit 42 of the 2nd HDMI, 43 and of the 3rd HDMI compressor
The sub- output unit 44 of 3rd HDMI.Separate the input terminal and the 3rd HDMI compressor of encryption equipment 33 and the 2nd HDMI compressor 41
43 input terminal connection, the output end of the 2nd HDMI compressor 41 are connect with the sub- output unit 42 of the 2nd HDMI, the 3rd HDMI pressure
The output end of contracting device 43 is connect with the sub- output unit 44 of the 3rd HDMI.
Second optical fiber receiver-transmitter module 32 is sent after the optical signal received is carried out the processing such as photoelectric conversion, amplification, shaping
Give separation encryption equipment 33.Separation encryption equipment 33 encrypts the electric signal received according to HDCP agreement, then believes TMDS
Number it is divided into two-way, is sent to the 2nd HDMI compressor 41 all the way, another way is sent to the 3rd HDMI compressor 43.2nd HDMI pressure
Contracting device 41 and the 3rd HDMI compressor 43 pass through the output of the 2nd HDMI after carrying out compression processing to the electric signal being respectively received
Unit 42 and the sub- output unit 44 of the 3rd HDMI are exported, and signal identical in this way can be simultaneously in different display equipment
Display.
Specifically, first to third compressor use model EP91C1E chip.It, can using lossless compressiong
The existence of redundant in signal is reduced, reduces signal by certain frequency band in the case where lossless image quality, driving capability is stronger.
It for the considerations of showing device diversity to rear end, standardizes, first use the HDMI interface of input terminal and shows in conjunction with HDMI
Show that equipment is connected, presses KEY key to read the EDID of display equipment and be stored in input terminal, go up electric connecting device again, at this time
Equipment calls the EDID of reading to be identified automatically, makes signal compatibility rear end equipment.
In above-described embodiment, fiber optic cable 5 is provided with more, passes through between two adjacent fiber optic cables 5 and is respectively set
Fibre-optical splice it is detachably connected, can greatly facilitate in this way engineering wiring and installation.Using optical signal transmission fiber, pass
Defeated distance is up to tens to several hundred rice, the strong antijamming capability of optical signal, and it is noiseless to surrounding other electronic equipments, without spoke
It penetrates.
In above-described embodiment, power supply module is additionally provided in high-definition multimedia interface fiber transmission device.Power supply mould
Block uses voltage-stablizer to power for transmitter 2 and receiver 3.
The above descriptions are merely exemplary embodiments of the present utility model, in the design that does not depart from the utility model and
Under the premise of principle, the equivalent changes and modifications that any those skilled in the art is made should belong to the utility model guarantor
The range of shield.
Claims (10)
1. a kind of high-definition multimedia interface fiber transmission device, which is characterized in that inputted including sequentially connected HDMI single
Member, transmitter, receiver and HDMI output unit；Fiber optic cable is connected between the transmitters and receivers；The transmission
Device is also connected with ring and goes out unit；The HDMI signal inputted by the HDMI input unit becomes two after transmitter conversion
Group signal, one group of HDMI signal are sent to the receiver, and another group of HDMI signal by the ring goes out unit, and to carry out local defeated
Out.
2. high-definition multimedia interface fiber transmission device according to claim 1, which is characterized in that be sent to described
One group of HDMI signal of receiver includes the original TMDS signal in four tunnels, and the original TMDS signal in four tunnel is converted into four Lu Guang
The receiver is sent to by four fiber optic cables after signal.
3. high-definition multimedia interface fiber transmission device according to claim 1 or 2, which is characterized in that the hair
Sending device includes sequentially connected HDMI decompression machine, separation decipher, the first optical fiber receiver-transmitter module and optical fiber sending port；HDMI solution
Depressor is connect with HDMI input unit, and the optical fiber sending port is connect with fiber optic cable.
4. high-definition multimedia interface fiber transmission device according to claim 3, which is characterized in that the HDMI is defeated
Entering the signal transmitted between unit and HDMI decompression machine has four road TMDS signals, all the way DDC signal, all the way CEC signal, all the way
POEWR power supply signal and all the way HPD signal.
5. high-definition multimedia interface fiber transmission device according to claim 3, which is characterized in that the HDMI solution
Depressor uses the chip of model EP91C1E, and the separation decipher uses the chip of model ITE6661.
6. high-definition multimedia interface fiber transmission device according to claim 3, which is characterized in that the ring goes out single
Member includes the first HDMI compressor and the first sub- output unit of HDMI；The input terminal of the first HDMI compressor is separated with described
Decipher connection, output end are connect with the sub- output unit of the first HDMI.
7. high-definition multimedia interface fiber transmission device according to claim 6, which is characterized in that the receiver
Including sequentially connected optical fiber receiving port, the second optical fiber receiver-transmitter module and separation encryption equipment；The output unit includes second
HDMI compressor, the sub- output unit of the 2nd HDMI, the 3rd HDMI compressor and the 3rd sub- output unit of HDMI；The separation encryption
Device is connect with the input terminal of the input terminal of the 2nd HDMI compressor and the 3rd HDMI compressor, the 2nd HDMI compressor
Output end is connect with the 2nd sub- output unit of HDMI, the output end and the 3rd sub- output unit of HDMI of the 3rd HDMI compressor
Connection.
8. high-definition multimedia interface fiber transmission device according to claim 7, which is characterized in that described first to
3rd HDMI compressor uses the chip of model EP91C1E.
9. high-definition multimedia interface fiber transmission device according to claim 1 or 2, which is characterized in that the light
Fine cable is provided with more, and it is detachably connected to pass through respectively arranged fibre-optical splice between two adjacent fiber optic cables.
10. high-definition multimedia interface fiber transmission device according to claim 1 or 2, which is characterized in that also set up
There is power supply module, the power supply module uses voltage-stablizer to power for the transmitters and receivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821310238.4U CN208656773U (en) | 2018-08-14 | 2018-08-14 | High-definition multimedia interface fiber transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821310238.4U CN208656773U (en) | 2018-08-14 | 2018-08-14 | High-definition multimedia interface fiber transmission device |
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| Publication Number | Publication Date |
|---|---|
| CN208656773U true CN208656773U (en) | 2019-03-26 |
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ID=65789743
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821310238.4U Active CN208656773U (en) | 2018-08-14 | 2018-08-14 | High-definition multimedia interface fiber transmission device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114597706A (en) * | 2022-03-16 | 2022-06-07 | 深圳新联胜光电科技有限公司 | HDMI cable assembly and signal transmission method |
| CN115065857A (en) * | 2022-08-17 | 2022-09-16 | 深圳市品为科技有限公司 | High-definition multimedia interface optical fiber transmission device |
-
2018
- 2018-08-14 CN CN201821310238.4U patent/CN208656773U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114597706A (en) * | 2022-03-16 | 2022-06-07 | 深圳新联胜光电科技有限公司 | HDMI cable assembly and signal transmission method |
| CN114597706B (en) * | 2022-03-16 | 2024-02-06 | 深圳新联胜光电科技有限公司 | HDMI cable assembly and signal transmission method |
| CN115065857A (en) * | 2022-08-17 | 2022-09-16 | 深圳市品为科技有限公司 | High-definition multimedia interface optical fiber transmission device |
| CN115065857B (en) * | 2022-08-17 | 2022-11-25 | 深圳市品为科技有限公司 | High-definition multimedia interface optical fiber transmission device |
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