CN201910554U - DVI (digital visual interface) signal transmitting device supporting long-distance transmission - Google Patents
DVI (digital visual interface) signal transmitting device supporting long-distance transmission Download PDFInfo
- Publication number
- CN201910554U CN201910554U CN2010206274021U CN201020627402U CN201910554U CN 201910554 U CN201910554 U CN 201910554U CN 2010206274021 U CN2010206274021 U CN 2010206274021U CN 201020627402 U CN201020627402 U CN 201020627402U CN 201910554 U CN201910554 U CN 201910554U
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- dvi
- signal
- distance transmission
- transmssion line
- signal transmitting
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model relates to signal transmission, in particular to a DVI (digital visual interface) signal transmitting device supporting long-distance transmission in signal transmission, which comprises a signal line for transmitting DVI signals, a cable driver is arranged at an input end of the signal line, and a balancer is arranged at an output end of the signal line. The DVI signal transmitting device has the advantages that amplitude of output TMDS (transition minimized differential signaling) signals is increased by the aid of the cable driver, amplitude of the TMDS signals inputted into the balancer can be increased beneficially, over dependence on the signal lien can be avoided, and structure is simplified and cost is reduced.
Description
Technical field
The utility model relates to the signal transmission, relates in particular to a kind of DVI signal transmitting apparatus of supporting long Distance Transmission in the signal transmission.
Background technology
DVI(Digital Visual Interface, be digital visual interface) be to be used for short-distance transmission image and data at first, the cable that promptly uses high broadband data transmission is when the length Distance Transmission, also can make the deterioration of DVI signal, and to decay, to shake, to be offset, to crosstalk the form appearance, can cause terminal screen flash of light, noise flashes,, even do not show.
At present, in order to address the above problem, a kind of method is that the end at holding wire adds an equalizer; Another kind method be transmission add an equalizer midway, its two ends couple together with holding wire again, terminal also needs an equalizer.
The problem of first method and defective are:
1. according to the DVI1.0 agreement, the TMDS(transition minimized differential signaling of DVI) peak-to-peak value of signal output is 0.8-1.2V, after long distance (as 36 meters) transmission, though transmitting will to crosstalk and be offset with twisted-pair feeder, the TMDS signal reduces, but decay, shake can't overcome, signal is during to equalizer, and the amplitude of TMDS signal is too small, and possible equalizer can't restore the TMDS signal.
2. seriously rely on the quality of DVI holding wire and the line footpath of the twisted-pair feeder in the DVI holding wire, the line footpath is thick more,, TMDS signal attenuation is more little.
The problem of second method and defective are:
1. all problems and the defective that have first method, terminal also need to increase equalizer again, can cause cost up.
2. complex structure needs the junction too much, has reduced reliability.
Summary of the invention
In order to solve the problems of the prior art, the utility model provides a kind of DVI signal transmitting apparatus of supporting long Distance Transmission.
The utility model provides a kind of DVI signal transmitting apparatus of supporting long Distance Transmission, comprises the signal transmssion line of transmission DVI signal, and the input of described signal transmssion line is provided with cable driver, and the output of described signal transmssion line is provided with equalizer.
As further improvement of the utility model, described equalizer is provided with power interface.
As further improvement of the utility model, the outer surface of described signal transmssion line is enclosed with anti abrasive mesh grid.
As further improvement of the utility model, the length of described signal transmssion line is less than or equal to 36 meters.
As further improvement of the utility model, the length of described signal transmssion line is 36 meters.
The beneficial effects of the utility model are: pass through such scheme, can promote the amplitude of the TMDS signal of output by cable driver, help improving the amplitude of the TMDS signal of input equalizer, can avoid depending on unduly signal transmssion line, simplified structure reduces cost.
Description of drawings
Fig. 1 is a kind of structural representation of supporting the DVI signal transmitting apparatus of long Distance Transmission of the utility model.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is further specified.
Drawing reference numeral among Fig. 1 is: cable driver 1; Signal transmssion line 2; Equalizer 3.
As shown in Figure 1, a kind of DVI signal transmitting apparatus of supporting long Distance Transmission, the signal transmssion line 2 that comprises transmission DVI signal, the input of described signal transmssion line 2 is provided with cable driver 1, can promote the amplitude of the TMDS signal of output by described cable driver 1, the output of described signal transmssion line 2 is provided with equalizer 3.
As shown in Figure 1, described equalizer 3 is provided with power interface, is used to connect the power supply of DC5V.When the DC5V in DVI can not satisfy cable driver 1 and equalizer 3 power supply requirements, can add DC5V by described power interface and satisfy power supply requirement, and external DC5V and the 5V among the DVI isolate.
Transmit 2 uses of used signal transmssion line and meet the HDMI1.3 standard, the outer surface of described signal transmssion line 2 is enclosed with anti abrasive mesh grid, can protect described signal transmssion line 2.
The length of described signal transmssion line 2 is less than or equal to 36 meters.
The length of described signal transmssion line 2 is preferably 36 meters.
A kind of DVI signal transmitting apparatus of supporting long Distance Transmission that the utility model provides, mainly be the amplitude that promotes the TMDS signal of its output by described cable driver 1., TMDS signal amplitude peak-to-peak value in the DVI standard is 0.8-1.2V, we bring up to the TMSD signal amplitude peak-to-peak value of its output about 1.4V by described cable driver 1, even through 36 meters long Distance Transmission, though signal decay, but compare with prior art, the TMDS signal amplitude peak-to-peak value that inputs to described equalizer 3 increases, described equalizer 3 can restore the DVI signal that meets the DVI1.0 standard, and, can avoid the depending on unduly of signal transmssion line 2, simplified structure reduces cost.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (5)
1. the DVI signal transmitting apparatus that can support long Distance Transmission, it is characterized in that: the signal transmssion line (2) that comprises transmission DVI signal, the input of described signal transmssion line (2) is provided with cable driver (1), and the output of described signal transmssion line (2) is provided with equalizer (3).
2. according to the described DVI signal transmitting apparatus of supporting long Distance Transmission of claim 1, it is characterized in that: described equalizer (3) is provided with power interface.
3. according to the described DVI signal transmitting apparatus of supporting long Distance Transmission of claim 1, it is characterized in that: the outer surface of described signal transmssion line (2) is enclosed with anti abrasive mesh grid.
4. according to the described DVI signal transmitting apparatus of supporting long Distance Transmission of claim 1, it is characterized in that: the length of described signal transmssion line (2) is less than or equal to 36 meters.
5. according to the described DVI signal transmitting apparatus of supporting long Distance Transmission of claim 4, it is characterized in that: the length of described signal transmssion line (2) is 36 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206274021U CN201910554U (en) | 2010-11-26 | 2010-11-26 | DVI (digital visual interface) signal transmitting device supporting long-distance transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206274021U CN201910554U (en) | 2010-11-26 | 2010-11-26 | DVI (digital visual interface) signal transmitting device supporting long-distance transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910554U true CN201910554U (en) | 2011-07-27 |
Family
ID=44302754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206274021U Expired - Lifetime CN201910554U (en) | 2010-11-26 | 2010-11-26 | DVI (digital visual interface) signal transmitting device supporting long-distance transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531977A (en) * | 2012-07-06 | 2014-01-22 | 富士康(昆山)电脑接插件有限公司 | Data transmission line |
-
2010
- 2010-11-26 CN CN2010206274021U patent/CN201910554U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531977A (en) * | 2012-07-06 | 2014-01-22 | 富士康(昆山)电脑接插件有限公司 | Data transmission line |
| CN103531977B (en) * | 2012-07-06 | 2016-06-08 | 富士康(昆山)电脑接插件有限公司 | Data transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN BEACON DISPLAY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENZHEN JUCHAO TECHNOLOGY CO., LTD. Effective date: 20120221 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 518057 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120221 Address after: 518057 Guangdong city of Shenzhen province Nanshan District Gao Xin Road Chinese Development Institute of science and technology incubator building, Room 201 Patentee after: Shenzhen Beacon Display Technology Co., Ltd. Address before: 2, Shenzhen, Guangdong, Nanshan District Ping Shan Road, Tai Ping Industrial Park, 10 to 5 floor, 518000 floor Patentee before: Shenzhen Juchao Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |