CN205584357U - HDMI transition system - Google Patents
HDMI transition system Download PDFInfo
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- CN205584357U CN205584357U CN201620333909.3U CN201620333909U CN205584357U CN 205584357 U CN205584357 U CN 205584357U CN 201620333909 U CN201620333909 U CN 201620333909U CN 205584357 U CN205584357 U CN 205584357U
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Abstract
The utility model relates to a HDMI transition system, this system include receiving terminal, net twine and transmitting terminal, and receiving terminal and transmitting terminal pass through the net twine to be connected, its characterized in that, receiving terminal and transmitting terminal include respectively: the screening can, HDMI interface and net twine interface set up respectively at the both ends of screening can, the both ends of net twine respectively with the net twine interface of receiving terminal and the net twine interface connection of transmitting terminal, printed circuit board sets up in the screening can between HDMI interface and net twine interface, send signaling conversion circuit, the printing is on the printed circuit board of transmitting terminal for the signal that transmits HDMI signal conversion on the net twine, received signal converting circuit, the printing is on the printed circuit board of receiving terminal for the signal conversion that will transmit on the net twine is the HDMI signal. The utility model discloses having prolonged signal transmission distance, having improved transmission performance, cost is extremely low, is favorable to market large tracts of land penetration and promotion.
Description
Technical field
This utility model belongs to TV accessory field, particularly relates to a kind of HDMI converting system.
Background technology
In order to realize the long range propagation of HDMI signal, general employing netting twine is as transmission medium.Compare long HDMI wire, and netting twine is simple, convenient, low cost, and circulation is wide, generally, easily obtains, etc. advantage.
HDMI has 19 pins, and cable interface is 8 pins.If HDMI signal to be allowed intactly transmits inside netting twine, then be necessary for there are 2 netting twines, the most enough transmission HDMI signals.But in actual family, in engineering wiring, the most all only having 1 netting twine, therefore this kind of transmission means inconvenience, the most impracticable.
HDMI signal transmits inside single netting twine, currently mainly has two kinds of solutions:
One, HDMI signal is packaged into TCP/IP signal, i.e. network signal, thus can realize HDMI signal long range propagation inside single netting twine.
Shortcoming:
1) because HDMI signal is high-definition digital signal, in this case, signal data is through packing and unpacking, in the case of distance, will necessarily cause signal delay.
2) it addition, for the packing and unpacking realizing signal data, it is necessary to through substantial amounts of chip and the process of electronic component, cost is high.
3) at the two ends (transmitting terminal and receiving terminal) of network cable transmission, in order to allow all of chip and electronic component normally work, it is necessary to product is powered.
Two, by HDMI decrypted signal, only transmitting the audio-video signal of HDMI, HDMI signal transmission distance can be reached about 60 meters by i.e. 1,3,4,6,7,9,10,12. this methods, and delays time to control is in a short period of time.
Shortcoming:
1) HDMI decrypted signal is violated HDMI association and the regulation of HDCP (HDCP technology) agreement herein, in the range of legal provisions: use, the area of application, scope, the most restricted.
2) TV on the market is of a great variety, signal source (such as player) cannot read EDID (expanded display recognition data) signal of TV (or display) in such cases, therefore cannot be according to the EDID (expanded display recognition data) of TV, export optimal audio-video signal, image may be caused partially to shield, cannot be all over the screen, image stretch etc..
3) HDMI signal is when short-distance transmission, needs low EQ (equalizer), when long range propagation, needs high and EQ (equalizer).Therefore, in order to make product general, need manually to regulate EQ (equalizer), or automatic EQ (equalizer) semiconductor chip that employing price is high.
4) this kind of product cost is only second to TCP/IP transmission, and cost is the highest.
5) at the two ends (transmitting terminal and receiving terminal) of network cable transmission, in order to allow all of chip and electronic component normally work, it is necessary to product is powered.
Both the above transmission method, in performance and cost, does not preponderates.
Utility model content
This utility model provides a kind of HDMI converting system, it is possible to makes transmitting in netting twine of HDMI signal high-fidelity, and extends signal transmission distance, reduces transmission cost, improve transmission performance.
A kind of HDMI converting system of the present utility model, including receiving terminal, netting twine and transmitting terminal, described receiving terminal and transmitting terminal are connected by netting twine, and described receiving terminal and transmitting terminal include respectively:
Shielding shell；
HDMI and cable interface, be separately positioned on the two ends of described shielding shell, and the two ends of described netting twine are connected with the cable interface of receiving terminal and the cable interface of transmitting terminal respectively；
Printed circuit board, is arranged between described HDMI and cable interface and is positioned at shielding shell；
Send signaling conversion circuit, be printed on the printed circuit board of described transmitting terminal, for HDMI signal being converted on netting twine the signal of transmission；
Receive signaling conversion circuit, be printed on the printed circuit board of described receiving terminal, for the signal of transmission on netting twine is converted to HDMI signal.
Preferably, described HDMI has 19 pins, and wherein 1,3,4,6,7,9,10,12 leg signal are AC signal, and 15,16,18,19 leg signal are DC signal；Described cable interface has 8 pins.
Preferably, described transmission signaling conversion circuit includes:
Filter-coupler module, connects 1,3,4,6,7,9,10,12 pins of the HDMI of transmitting terminal, is filtered the AC signal from described 1,3,4,6,7,9,10,12 pins coupling with low capacity；
DDC module, connects 15 pins and 16 pins of the HDMI of transmitting terminal, the DC signal from 15 pins and 16 pins carries out high frequency, low frequency and bandpass filtering, then carries out impedance matching；
Filtration module, connects 18 pins and 19 pins of the HDMI of transmitting terminal, is filtered the DC signal from described 18 pins and 19 pins.
Preferably, described reception signaling conversion circuit includes:
Inverse filtering coupling module, connects 8 pins of described receiving terminal cable interface, draws AC signal for the signal from 8 pins is filtered uncoupling；
Reversely DDC module, connect described receiving terminal for transmitting the 15 of the HDMI of transmitting terminal, the pair of pins of the cable interface of 16 leg signal, be filtered drawing DC signal to this signal；
Inverse filtering module, connect described receiving terminal for transmitting the 18 of the HDMI of transmitting terminal, the pair of pins of the cable interface of 19 leg signal, be filtered drawing DC signal to this signal.
Preferably, described transmission signaling conversion circuit also includes LDO or DC to DC module, is connected with 18 pins of the HDMI of described transmitting terminal, for reducing the voltage of 18 pins, is then applied in described filter-coupler module.
Preferably, described reception signaling conversion circuit also includes EQ adjustment module, is connected with described inverse filtering coupling module, is used for strengthening AC signal amplitude.
The utility model has the advantage of,
1, transmission range can reach 30 meters.
2, signal is not through packing and unpacking, without compression, the most no-delay.
3, HDMI signal is not decrypted and encrypts, and does not violates HDMI association and the pertinent regulations of HDCP agreement.
4, signal source (player) can read the edid of TV completely, and according to the edid information of TV, output is best suitable for the image information of TV display effect.
5, without regulating EQ, it is no matter short distance (< 1 meter), or distance (30 meters), all can automatically identify transmission.
6, do not limited by resolution, both can have been transmitted 720P@60Hz, 1080P@60Hz, it is also possible to transmission 4k@30Hz, 4K@60Hz.
7, no matter super low-power consumption, be signal source (transmitting terminal), or television (receiving terminal), all need not external power supply.
8, two kinds of transmission means before comparing, the design of this transmission means, cost is extremely low, beneficially the penetration and promotion of market large area.
9, PCB and product size are little, make the shape of converting interface, easy to use succinctly.
10, owing to power supply and common port (GND) are all coupled to transmitting terminal, if therefore adding EQ value regulation (such as adding chip MAX3815) at transmitting terminal, then transmission range can be further up to 60 meters.
Accompanying drawing explanation
Fig. 1 HDMI of the present utility model conversion system structure schematic diagram；
Fig. 2 this utility model sends signaling conversion circuit module diagram；
Fig. 3 this utility model receives signaling conversion circuit module diagram.
Detailed description of the invention
As shown in Figure 1, a kind of HDMI converting system of the present utility model, including transmitting terminal 1, receiving terminal 2 and netting twine 3, transmitting terminal 1 and receiving terminal 2 are connected by netting twine 3, and transmitting terminal 1 and receiving terminal 2 include respectively: shielding shell 11 and 21, HDMI 12 and 22, cable interface 13 and 23, printed circuit board 14 and 24, transmission signaling conversion circuit 15, reception signaling conversion circuit 25；HDMI 12 and cable interface 13 are separately positioned on the two ends of shielding shell 11, and HDMI 22 and cable interface 23 are separately positioned on the two ends of shielding shell 21, and the two ends of netting twine 3 are connected with the cable interface 23 of receiving terminal 2 and the cable interface 13 of transmitting terminal 1 respectively；Printed circuit board 14 is arranged between HDMI 12 and cable interface 13 and is positioned at shielding shell 11；Printed circuit board 24 is arranged between HDMI 22 and cable interface 23 and is positioned at shielding shell 21；Send signaling conversion circuit 15 to be printed on printed circuit board 14；Receive signaling conversion circuit 25 to be printed on printed circuit board 24.
HDMI 12 and 22 has 19 pins, and wherein 1,3,4,6,7,9,10,12 leg signal are AC signal, and 15,16,18,19 leg signal are DC signal；Cable interface has 8 pins.
Include as in figure 2 it is shown, send signaling conversion circuit 15:
Filter-coupler module 151, connects 1,3,4,6,7,9,10,12 pins of the HDMI 12 of transmitting terminal 1, and to from 1, the AC signal of 3,4,6,7,9,10,12 pins is filtered coupling with low capacity；DDC module 152, connects 15 pins and 16 pins of the HDMI 12 of transmitting terminal 1, the DC signal from 15 pins and 16 pins carries out high frequency, low frequency and bandpass filtering, then carries out impedance matching；Filtration module 153, connects 18 pins and 19 pins of the HDMI 12 of transmitting terminal 1, is filtered the DC signal from described 18 pins and 19 pins.
8 pin outputs of the cable interface of eight AC signal one_to_one corresponding transmitting terminals of the HDMI 12 from transmitting terminal 1 that filtered coupling module 151 is converted, the pin of concrete corresponding cable interface can arbitrarily select；Through 15 pins and two DC signals of 16 pins of the converted HDMI 12 from transmitting terminal 1 of DDC module 152, needing the cable interface 13 pin output of a pair transmitting terminal 1 that correspondence presets, this presets and can arbitrarily select；18 pins of the HDMI 12 from transmitting terminal 1 that filtered module 153 is converted and two DC signals of 19 pins, it is also required to corresponding another cable interface 13 pin output to transmitting terminal 1 preset, this presets and can arbitrarily select, but can not select the pin having been used for transmitting the above-mentioned DC signal converted through DDC module.
Send signaling conversion circuit 15 and can also include LDO or DC to DC module 154, it is connected with 18 pins of the HDMI 12 of transmitting terminal 1, for reducing the voltage of 18 pins to predetermined value, it is then applied in filter-coupler module 151, eight AC signals are pulled up, to strengthen AC signal amplitude, for transmitting farther distance.
Include as it is shown on figure 3, receive signaling conversion circuit 25:
Inverse filtering coupling module 251 connects 8 pins of receiving terminal 2 cable interface 23, draws eight AC signals for the signal from 8 pins is filtered uncoupling；Reversely DDC module 252 connect receiving terminal 2 for transmitting the 15 of HDMI 12 of transmitting terminal 1, the pair of pins of receiving terminal 2 cable interface 23 of 16 leg signal, be filtered drawing DC signal to this signal；Inverse filtering module 253 connect receiving terminal 2 for transmitting the 18 of HDMI 12 of transmitting terminal 1, the pair of pins of the cable interface 23 of 19 leg signal, be filtered drawing DC signal to this signal.
It is converted to eight AC signals, 1,3,4,6,7,9,10,12 pin outputs of corresponding corresponding receiving terminal 2HDMI interface 22 through inverse filtering coupling module 251；It is converted to 15,16 leg signal, 15,16 pin outputs of corresponding receiving terminal 2HDMI interface 22 through reverse DDC module 252；It is converted to 18,19 leg signal, 18,19 pin outputs of corresponding receiving terminal 2HDMI interface 22 through inverse filtering module 253.The network interface pin of the receiving terminal 2 that this reverse DDC module 252 receiving signaling conversion circuit 25 and inverse filtering module 253 are connected respectively needs to determine according to default in the transmission signaling conversion circuit 15 of transmitting terminal 1.
Receive signaling conversion circuit 25 and can also include EQ adjustment module 254, after being arranged on filter-coupler module, be used for strengthening AC signal amplitude.
A kind of HDMI signal conversion method utilizing above-mentioned HDMI converting system, comprises the following steps:
A, at transmitting terminal, HDMI signal inputs from the HDMI of transmitting terminal；
B, HDMI signal is through sending signaling conversion circuit, and filter-coupler module is to from 1, and the AC signal of 3,4,6,7,9,10,12 pins is filtered coupling with low capacity；DDC module carries out high frequency, low frequency and bandpass filtering to the DC signal from 15 pins and 16 pins, then carries out impedance matching；DC signal from 18 pins and 19 pins is filtered by filtration module；
C, signal after sending signaling conversion circuit conversion are exported by the network interface of transmitting terminal, through network cable transmission to receiving terminal；
D, at receiving terminal, input from the cable interface of receiving terminal through the signal of network cable transmission；
E, the described signal through network cable transmission are through receiving signaling conversion circuit, and inverse filtering coupling module is filtered decoupling to the signal of 8 pins from receiving terminal cable interface and is combined into the 1 of receiving terminal HDMI, the AC signal of 3,4,6,7,9,10,12 pins；Reversely DDC module the signal of the pair of pins of the described receiving terminal cable interface from 15,16 leg signal transmitting described transmitting terminal HDMI is filtered obtaining the 15 of receiving terminal HDMI, the DC signal of 16 pins；Inverse filtering module is filtered obtaining the 18 of receiving terminal HDMI to the signal of pair of pins of the receiving terminal cable interface from 18,19 leg signal transmitting described transmitting terminal HDMI, the DC signal of 19 pins；
F, signal after receiving signaling conversion circuit conversion are exported by the HDMI of receiving terminal.
In the method for the present embodiment, in order to increase transmission range, send and on signaling conversion circuit 15, increase LDO or DC to DC module 154, to strengthen the AC signal amplitude in HDMI, strengthen anti-interference, in order to transmission farther, it is also possible in receiving signaling conversion circuit 25, increase EQ adjustment module, AC signal after uncoupling is strengthened, is used for increasing transmission range.
The inverted signal transmission range of HDMI being carried out by the present embodiment processing can reach 30 meters.Signal is not through packing and unpacking, without compression, the most no-delay, is not the most decrypted and encrypts, not violating HDMI association and the pertinent regulations of HDCP agreement.Not limited by resolution, super low-power consumption, the design of this transmission means, cost is extremely low, beneficially the penetration and promotion of market large area.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (6)
1. a HDMI converting system, including receiving terminal, netting twine and transmitting terminal, described receiving terminal and
Transmitting terminal is connected by netting twine, it is characterised in that described receiving terminal and transmitting terminal include respectively:
Shielding shell；
HDMI and cable interface, be separately positioned on the two ends of described shielding shell, described netting twine
Two ends are connected with the cable interface of receiving terminal and the cable interface of transmitting terminal respectively；
Printed circuit board, is arranged between described HDMI and cable interface and is positioned at shielding shell
In；
Send signaling conversion circuit, be printed on the printed circuit board of described transmitting terminal, for by HDMI
Signal is converted on netting twine the signal of transmission；
Receiving signaling conversion circuit, be printed on the printed circuit board of described receiving terminal, being used for will be at netting twine
The signal of upper transmission is converted to HDMI signal.
HDMI converting system the most according to claim 1, it is characterised in that described HDMI connects
Mouth has 19 pins, and wherein 1,3,4,6,7,9,10,12 leg signal are AC signal, and 15,16,18,19
Leg signal is DC signal；Described cable interface has 8 pins.
HDMI converting system the most according to claim 2, it is characterised in that described transmission is believed
Number change-over circuit includes:
Filter-coupler module, connects 1,3,4,6,7,9,10,12 pins of the HDMI of transmitting terminal, to coming
It is filtered coupling with low capacity from the AC signal of described 1,3,4,6,7,9,10,12 pins；
DDC module, connects 15 pins and 16 pins of the HDMI of transmitting terminal, to from 15
The DC signal of pin and 16 pins carries out high frequency, low frequency and bandpass filtering, then carries out impedance matching；
Filtration module, connects 18 pins and 19 pins of the HDMI of transmitting terminal, to from described
The DC signal of 18 pins and 19 pins is filtered.
HDMI converting system the most according to claim 3, it is characterised in that described reception is believed
Number change-over circuit includes:
Inverse filtering coupling module, connects 8 pins of described receiving terminal cable interface, for from
The signal of 8 pins is filtered uncoupling and draws AC signal；
Reversely DDC module, connect described receiving terminal for transmit the HDMI of transmitting terminal 15,
The pair of pins of the cable interface of 16 leg signal, is filtered drawing DC signal to this signal；
Inverse filtering module, connects described receiving terminal for transmitting the 18 of the HDMI of transmitting terminal, 19
The pair of pins of the cable interface of leg signal, is filtered drawing DC signal to this signal.
HDMI converting system the most according to claim 3, it is characterised in that described transmission is believed
Number change-over circuit also includes LDO or DC to DC module, with the HDMI of described transmitting terminal
18 pins connect, and for reducing the voltage of 18 pins, are then applied in described filter-coupler module.
HDMI converting system the most according to claim 4, it is characterised in that described reception is believed
Number change-over circuit also includes EQ adjustment module, is connected with described inverse filtering coupling module, is used for strengthening
AC signal amplitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620333909.3U CN205584357U (en) | 2016-04-20 | 2016-04-20 | HDMI transition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620333909.3U CN205584357U (en) | 2016-04-20 | 2016-04-20 | HDMI transition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205584357U true CN205584357U (en) | 2016-09-14 |
Family
ID=56863385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620333909.3U Active CN205584357U (en) | 2016-04-20 | 2016-04-20 | HDMI transition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205584357U (en) |
-
2016
- 2016-04-20 CN CN201620333909.3U patent/CN205584357U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190513 Address after: 518000 Guanlan Street, Longhua District, Shenzhen City, Guangdong Province, Second Floor of Building B, Jinxiongda Science Park, Guanlan Huanguan South Road Patentee after: Shenzhen Innovation Shengwei Technology Co., Ltd. Address before: 100085 Beijing Haidian District, Shangdi 10th Street, No. 1 Courtyard, Building 5, 6th Floor 608 Patentee before: Beijing Rui Ze wins for Science and Technology Ltd. |