CN210670322U - DVI distributor supporting long line transmission - Google Patents
DVI distributor supporting long line transmission Download PDFInfo
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- CN210670322U CN210670322U CN201922111691.3U CN201922111691U CN210670322U CN 210670322 U CN210670322 U CN 210670322U CN 201922111691 U CN201922111691 U CN 201922111691U CN 210670322 U CN210670322 U CN 210670322U
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- dvi
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- long line
- line transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 230000006837 decompression Effects 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a DVI distributor supporting long line transmission, which comprises a distributor shell and a circuit board arranged in the distributor shell; the distributor shell is respectively embedded with a DVI input interface, a DVI output interface, a DVI cascade interface and a configuration adjusting interface, and the configuration adjusting interface is connected with an upper computer; the DVI signal compression and coding module is connected with the DVI input interface; by configuring parameters such as pre-emphasis, de-emphasis, equalization and the like, the design test version can realize normal display of signals of two terminals at a distance of 15 m; the longer-distance signal transmission can be realized in a cascading expansion mode, the product connection topological structure is simple, and the practicability is high.
Description
Technical Field
The utility model belongs to the technical field of the DVI distributor, concretely relates to support DVI distributor of long line transmission.
Background
The DVI distributor is a signal distributor for multi-port digital video output, has DVI video input of the same way, the function of multi-channel DVI video output, in the multimedia application system, often needs a plurality of digital display terminals to display the picture of the same DVI signal source, if for a DVI signal source of each display terminal configuration, so both increased the system cost, greatly reduced the reliability of system again, the DVI distributor is the best solution.
The prior DVI dispenser has the following unreasonable problems in use:
1. the configuration adjustment is inconvenient, and the modification can not be carried out according to the actual situation;
2. the phenomena of large loss after signal transmission, poor image quality, unstable picture, noise, color deficiency and the like which affect the viewing experience are solved, and a new DVI distributor hardware architecture supporting long-line transmission is provided for the phenomena.
Disclosure of Invention
An object of the utility model is to provide a DVI distributor of support long line transmission, it is a hardware architecture that is favorable to processing production and application, and its structural layout is reasonable, is favorable to the wiring and dispels the heat, and the logic is clear, and it cooperates corresponding current component, and it is inconvenient to solve the configuration adjustment, can't modify according to actual conditions, the loss is big behind the signal transmission, and image quality is not good, and the picture is unstable, has the noise point, lacks the problem of the phenomenon of experience is watched in the influence such as look.
In order to achieve the above object, the utility model provides a following technical scheme: a DVI distributor supporting long line transmission comprises a distributor shell of a source end and a destination end and a circuit board arranged in the distributor shell; the distributor shell is respectively embedded with a DVI input interface, a DVI output interface, a DVI cascade interface and a configuration adjusting interface, and the configuration adjusting interface is connected with an upper computer; install DVI chip, DVI signal compression and coding module and DVI signal decompression and decoding module on the circuit board respectively, DVI signal compression and coding module with DVI input interface links to each other.
Preferably, the DVI chip is specifically an EP chip.
Preferably, a configuration module is further disposed on the DVI chip, and the configuration module is connected to a configuration adjustment interface disposed on the dispenser housing.
Preferably, the DVI cascade interface of the source end is connected to the DVI input interface of the destination end via a DVI transmission cable.
Preferably, the DVI transmission cable is provided with an aviation plug.
Compared with the prior art, the beneficial effects of the utility model are that:
the technical scheme of the design is beneficial to processing production and application, has reasonable structural layout, is beneficial to wiring and heat dissipation, has clear logic, and can realize normal display of two terminal signals with the distance of 15m by matching with the existing elements; the longer-distance signal transmission can be realized in a cascading expansion mode, the topological structure of product connection is simple, and the practicability is high;
drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the circuit board structure of the present invention;
in the figure: 1. a circuit board; 2. a DVI chip; 3. DVI signal compression and coding module; 4. configuring an adjusting interface; 5. a configuration module; 6. DVI signal decompression and decoding module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a DVI distributor supporting long line transmission comprises a distributor shell of a source end and a destination end and a circuit board 1 arranged in the distributor shell; a DVI input interface, a DVI output interface, a DVI cascade interface and a configuration adjusting interface 4 are respectively embedded and arranged on the shell of the distributor, and the configuration adjusting interface 4 is connected with an upper computer; install DVI chip 2 on the circuit board 1 respectively, DVI signal compression and coding module 3, and DVI signal decompression and decoding module 6, DVI signal compression and coding module 3 link to each other with DVI input interface, and DVI chip 2 specifically is the EP9314 chip, still be provided with configuration module 5 on the DVI chip 2, configuration module 5 is connected with configuration adjustment interface 4 that sets up on the distributor shell, the DVI cascade interface of source end passes through DVI transmission cable with the DVI input interface of destination end and links to each other, have aviation plug on DVI transmission cable, aviation plug can guarantee to stand lasting examination in the service environment of cable high strength, has anticorrosive, good characteristics such as vibration, the range of application of scheme has been enlarged.
The transmission distance of a general DVI signal long line is about 10m, the design needs to realize the stable transmission of signals in the signal line within the range of more than 10m, and the stable display of the signals at a target end is ensured; the simplification of product configuration is realized;
the DVI chip 2 with high integration level is selected to complete the design, meet the signal transmission requirement, adjust the configuration and ensure the stability of transmission according to the actual situation and the use of wires;
at a signal source end and a target end, aiming at the high-low frequency loss of a signal in a transmission line and the influence of the transmission line on the rising edge and the falling edge of the signal, the signal is compensated by adjusting pre-emphasis and de-emphasis, and meanwhile, the balance of the signal is controlled to compensate the transmission loss and filter the noise component in the transmission line so as to ensure the quality of long-distance transmission;
the parameters are adjusted by the configuration module 5 through the upper computer software, values corresponding to the pre-emphasis, de-emphasis, balance and other parameters are integrated into the software, parameter values are screened in the testing process to ensure that a target end signal eye diagram meets the DVI standard specification, a product is communicated with a board card through an I2C mode, after the parameter adjustment configuration is selected, a user can store the configuration in a file, and the stored parameters can be directly called in the later period of repeated use environment, so that the complicated process of setting and adjusting for many times is avoided;
meanwhile, before DVI signals are applied to the transmission cable, the DVI signals are compressed and decompressed by hardware and software through the DVI signal compression and encoding module 3, DVI output signals are compressed at a signal source end, and a check sequence is added, so that the accuracy of transmission data is ensured while the data transmission quantity is reduced; at the signal receiving end, the DVI signal decompression and decoding module 6 decompresses data using hardware and software, and then through decompression and restoration of the signal. Of course, only the hardware structure is protected, the software and the control mode based on the hardware structure adaptation do not belong to the protection range of the scheme, the adapted software and the control mode can be developed by means in the industry, and the software and the control mode have various forms and are not unique. The hardware structure of the product can be sold and used independently, and software does not need to be collocated for sale and use, and due to the hardware structure of the scheme, the software can be collocated to realize the following two functions.
(1) Normal display of signals of two terminals at a distance of 15m can be realized by configuring parameters such as pre-emphasis, de-emphasis and equalization; the longer-distance signal transmission can be realized in a cascading expansion mode, the topological structure of product connection is simple, and the practicability is high;
(2) through compression and decompression, the channel bandwidth is controlled, the DVI signals of different standards can be transmitted by the product, and the development of the subsequent standards is adapted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A DVI distributor supporting long line transmission, comprising: comprises a distributor shell and a circuit board (1) arranged in the distributor shell; the distributor shell is respectively provided with a DVI input interface, a DVI output interface, a DVI cascade interface and a configuration adjusting interface (4) in an embedded mode, and the configuration adjusting interface (4) is connected with an upper computer; install DVI chip (2), DVI signal compression and coding module (3) and DVI signal decompression and decoding module (6) on circuit board (1) respectively, DVI signal compression and coding module (3) with DVI input interface links to each other.
2. A DVI distributor supporting long line transmission according to claim 1, wherein: the DVI chip (2) is specifically an EP9314 chip.
3. A DVI distributor supporting long line transmission according to claim 1, wherein: still be provided with configuration module (5) on DVI chip (2), configuration module (5) are in with setting up configuration adjustment interface (4) on the distributor shell are connected.
4. A DVI distributor supporting long line transmission according to claim 1, wherein: the DVI cascade interface of the source end is connected with the DVI input interface of the destination end through a DVI transmission cable.
5. The DVI distributor supporting long line transmission of claim 4, wherein: the DVI transmission cable is provided with an aviation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922111691.3U CN210670322U (en) | 2019-11-30 | 2019-11-30 | DVI distributor supporting long line transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922111691.3U CN210670322U (en) | 2019-11-30 | 2019-11-30 | DVI distributor supporting long line transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210670322U true CN210670322U (en) | 2020-06-02 |
Family
ID=70822230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922111691.3U Expired - Fee Related CN210670322U (en) | 2019-11-30 | 2019-11-30 | DVI distributor supporting long line transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210670322U (en) |
-
2019
- 2019-11-30 CN CN201922111691.3U patent/CN210670322U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200602 |