CN212064205U - HDMI signal extender - Google Patents
HDMI signal extender Download PDFInfo
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- CN212064205U CN212064205U CN201920053538.7U CN201920053538U CN212064205U CN 212064205 U CN212064205 U CN 212064205U CN 201920053538 U CN201920053538 U CN 201920053538U CN 212064205 U CN212064205 U CN 212064205U
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Abstract
The utility model relates to a HDMI signal extender, including HDMI signal input terminal, HDMI signal output terminal, HDMI signal distribution unit, LCD drive unit, the first signal output termination LCD drive unit of HDMI signal distribution unit, the second signal output termination HDMI signal output terminal of HDMI signal distribution unit; the signal input end of the HDMI signal distribution unit is connected with the HDMI signal input terminal. The utility model discloses can realize HDMI signal remote transmission, through many display device of single signal source drive.
Description
Technical Field
The utility model relates to a HDMI signal extender.
Background
HDMI, High Definition Multimedia Interface (HDMI), which is a full digital video and audio transmission Interface, can transmit uncompressed audio and video signals. Due to the multiple advantages of such multimedia interfaces, more and more devices use such interfaces. At present, most of HDMI applications are point-to-point connection of a signal source and display equipment, and certain limitation is realized when a plurality of pieces of equipment are required to synchronously display the same video content. At present, a plurality of methods for realizing synchronous display of a plurality of devices are available, a plurality of signal sources can be used for driving the display devices one to one, but the method is difficult to realize synchronous playing of videos, and a plurality of signal sources are required to be used, so that the method is tedious and waste. Another method is to convert the HDMI video signal into a network signal for streaming media playing, because the HDMI signal is a high-definition signal, the direct conversion into the network signal has a high requirement on the network bandwidth, the cost is relatively high, if the HDMI signal is compressed first and then converted into the network signal, the video effect is deteriorated, and in the process of encoding and decoding the video in network transmission, the problem that synchronous display is difficult to achieve is caused.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide an HDMI signal extender, which can realize remote transmission of HDMI signals and drive multiple display devices through a single signal source.
The utility model discloses the technical scheme of invention purpose:
the utility model provides a HDMI signal extender, includes HDMI signal input terminal, its characterized in that: the HDMI signal distribution unit comprises an HDMI signal output terminal, an HDMI signal distribution unit and an LCD driving unit, wherein a first signal output end of the HDMI signal distribution unit is connected with the LCD driving unit, and a second signal output end of the HDMI signal distribution unit is connected with the HDMI signal output terminal; the signal input end of the HDMI signal distribution unit is connected with the HDMI signal input terminal.
Further, an equalization compensation unit is arranged between the signal input end of the HDMI signal distribution unit and the HDMI signal input terminal.
Furthermore, a passive bypass unit is arranged between the HDMI signal input terminal and the HDMI signal output terminal, and the passive bypass unit is used for directly communicating the HDMI signal input terminal and the HDMI signal output terminal when the HDMI signal extender is powered without a power supply.
The utility model discloses beneficial effect who has:
the utility model discloses HDMI signal extender includes HDMI signal input terminal, HDMI signal output terminal, HDMI signal distribution unit, LCD drive unit, and the first signal output termination of HDMI signal distribution unit LCD drive unit, the second signal output termination of HDMI signal distribution unit HDMI signal output terminal; the signal input end of the HDMI signal distribution unit is connected with the HDMI signal input terminal. The utility model discloses a plurality of HDMI signal extenders are connected (the concatenation), realize that the HDMI signal is remote to be connected, improve the transmission distance that the HDMI signal does not have the compression to 50 meters to 60 meters. Every HDMI signal extender all can external display device, realizes many display device of single signal source drive promptly, effectively solves many display device signal desynchronized problems among the prior art, compares in prior art's net twine extender, the utility model discloses HDMI signal extender has realized the uncompressed source signal transmission of HDMI signal, moreover, the utility model discloses can realize, the special HDMI interface transmission line of fungible, effective reduce cost through ordinary shielding paired line between the signal extender.
Drawings
Fig. 1 is a schematic circuit diagram of the HDMI signal extender of the present invention;
fig. 2 is a schematic diagram of the connection status of the HDMI signal extender according to the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1, the HDMI signal extender includes an HDMI signal input terminal DB9-1, an HDMI signal output terminal DB9-2, an HDMI signal distribution unit, an LCD drive unit, a first signal output terminal of the HDMI signal distribution unit being connected to the LCD drive unit, a second signal output terminal of the HDMI signal distribution unit being connected to the HDMI signal output terminal DB 9-2; the signal input terminal of the HDMI signal distribution unit is connected to the HDMI signal input terminal DB 9-1. The HDMI signal distribution unit solves the problem of signal cascade, and not only can transmit HDMI signals to display equipment, but also can transmit the signals to the next stage. The LCD driving unit can convert the HDMI signals into LVDS signals and is connected with the display device through the LVDS interface, and the problem that a display screen does not have the HDMI interface and simultaneously transmits high-definition audio and video is solved.
The balance compensation unit is arranged between the signal input end of the HDMI signal distribution unit and the HDMI signal input terminal, the balance compensation unit balances the input HDMI signals to improve the straightness of signal time sequences and compensates the signals, the problem of signal attenuation in the transmission process is solved, a low-power chip is adopted, the balance compensation unit is different from the conventional high-heat-productivity chip, and the service life of a device is prolonged.
A passive bypass unit 101 is arranged between the HDMI signal input terminal and the HDMI signal output terminal, and the passive bypass unit is used for enabling the HDMI signal input terminal DB9-1 and the HDMI signal output terminal DB9-2 to be directly communicated when the HDMI signal extender is not powered by a power supply.
In implementation, a plurality of the HDMI signal extenders are connected in a cascade. As shown in fig. 2, the HDMI signal input terminal of the current-stage HDMI signal extender is connected to the HDMI signal output terminal of the previous-stage HDMI signal extender, and the HDMI signal output terminal of the current-stage HDMI signal extender is connected to the HDMI signal input terminal of the next-stage HDMI signal extender. The two HDMI signal extenders are connected by a common shielded twisted pair 102, and the length of the wire is within 50 meters.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (3)
1. The utility model provides a HDMI signal extender, includes HDMI signal input terminal, its characterized in that: the HDMI signal distribution unit comprises an HDMI signal output terminal, an HDMI signal distribution unit and an LCD driving unit, wherein a first signal output end of the HDMI signal distribution unit is connected with the LCD driving unit, and a second signal output end of the HDMI signal distribution unit is connected with the HDMI signal output terminal; the signal input end of the HDMI signal distribution unit is connected with the HDMI signal input terminal.
2. The HDMI signal extender of claim 1, wherein: and an equalization compensation unit is arranged between the signal input end of the HDMI signal distribution unit and the HDMI signal input terminal.
3. The HDMI signal extender of claim 2, wherein: a passive bypass unit is arranged between the HDMI signal input terminal and the HDMI signal output terminal, and the passive bypass unit is used for directly communicating the HDMI signal input terminal and the HDMI signal output terminal when the HDMI signal delayer is powered by no power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920053538.7U CN212064205U (en) | 2019-01-14 | 2019-01-14 | HDMI signal extender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920053538.7U CN212064205U (en) | 2019-01-14 | 2019-01-14 | HDMI signal extender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212064205U true CN212064205U (en) | 2020-12-01 |
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| CN201920053538.7U Active CN212064205U (en) | 2019-01-14 | 2019-01-14 | HDMI signal extender |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547725A (en) * | 2019-01-14 | 2019-03-29 | 北京中电慧视科技有限公司 | HDMI signal delayer and application method |
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2019
- 2019-01-14 CN CN201920053538.7U patent/CN212064205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547725A (en) * | 2019-01-14 | 2019-03-29 | 北京中电慧视科技有限公司 | HDMI signal delayer and application method |
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