CN103474843A - Passive amplification type HDMI connecting wire - Google Patents
Passive amplification type HDMI connecting wire Download PDFInfo
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- CN103474843A CN103474843A CN2013104087902A CN201310408790A CN103474843A CN 103474843 A CN103474843 A CN 103474843A CN 2013104087902 A CN2013104087902 A CN 2013104087902A CN 201310408790 A CN201310408790 A CN 201310408790A CN 103474843 A CN103474843 A CN 103474843A
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- wire rod
- connecting line
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- hdmi connecting
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Abstract
The invention relates to an HDMI connecting terminal, in particular to a passive amplification type HDMI connecting wire which is adapted to long distance transmission. The connecting wire comprises an input terminal, an output terminal and wire rods connecting the input terminal and the output terminal, the output terminal comprises a shell body, the shell body is provided with an output interface connected with video receiving equipment, the interface and the equipment are connected through a circuit board, the circuit board comprises a passive amplification circuit, and the passive amplification circuit amplifies the signals through natural attenuation of the wire rods to a normal playing intensity and outputs the signals through the output interface. The workload of the passive amplification circuit is determined according to received signal intensity, and the loads of the circuit are reduced. Further, due to the fact that signals are output in constant signal intensity, the effects on the intensity of the output signals by the length of the wire rods are eliminated, and adaptability is better. In addition, the size of the connecting terminal and the size of the connecting wire are reduced greatly, and the passive amplification type HDMI connecting wire can be applied to pipe penetrating operation in wiring in decoration and is partial to the layout of circuits.
Description
Technical field
The present invention relates to a kind of HDMI splicing ear, especially a kind of passive amplifying type HDMI connecting line that is adapted to long Distance Transmission.
Background technology
Development along with the audition technology, HD video has obtained using more and more widely, the broadcasting of HD video and display device are also more and more, one of now main high definition display interface is the HDMI interface, between HDMI playback equipment and display device, use the HDMI connecting line to connect, HDMI connecting line two ends are provided with splicing ear.
Existing HDMI splicing ear unusually has two kinds of different forms according to what connect distance: common HDMI splicing ear when the first is short range transmission, and this type of splicing ear only plays with the switching effect of wire rod and gets final product, the HDMI splicing ear used when another kind is long-distance transmissions, because signal can Natural Attenuation when the long-distance transmissions, and along with the prolongation signal attenuation of transmission line is more serious, it is general after length of wires surpasses 20 meters, signal strength signal intensity is during lower than normal play intensity, picture can produce fuzzy, the situations such as snowflake, affect viewing effect, in order to solve problems, on the HDMI splicing ear of existing HDMI connecting line on picture output device, one initiative amplifying circuit perhaps is set on wire rod, length computation signal attenuation amplitude according to circuit, thereby amplified at video output, then allow signal Natural Attenuation in wire rod, keep the required intensity of normal play while making it arrive receiving equipment.
But there are following problem in HDMI splicing ear or wire rod that this type of initiatively amplifies:
1, at first signal amplification circuit needs vision signal is amplified to a maximum, then gives free rein to decay, so signal amplification circuit need be operated at full capacity for a long time, its caloric value is larger, thereby causes lower its useful life;
2, often need to select splicing ear or the connecting line of different magnification ratios according to different wire rod distances, selection while giving construction brings inconvenience, the very flexible of selection, need to calculate in detail the transmission range of wire rod before use, when distance is long, the signal that receiving equipment obtains a little less than, picture can produce fuzzy and snowflake; When distance is too short, the signal that receiving equipment obtains is stronger, and picture can produce the situation of shake;
3, because HD video has applied to increasing field, for example: video conference, club, video monitoring, electrical equipment sales field, outdoor billboard, movie theatre etc., when fitting up, these places often preset circuit, generally circuit is arranged in predetermined pipeline, and owing to needing to install amplifying circuit on existing terminal or wire rod, so the situation that causes terminal and wire rod to pass from pipeline, impact default circuit.
Summary of the invention
The invention provides that a kind of live load is little, using adaptability good and be convenient to the passive amplifying type HDMI connecting line of default circuit.
To achieve these goals, the present invention adopts following technical scheme:
It comprises: the input terminal be connected with picture output device, the lead-out terminal be connected with video reception apparatus and the wire rod that connects input terminal and lead-out terminal, it is characterized in that: described lead-out terminal comprises a housing, described housing is provided with the output interface be connected with video reception apparatus, between described interface and equipment, by a circuit board, be connected, comprise a passive amplifying circuit on described circuit board, described passive amplifying circuit is exported by output interface after the signal after the wire rod Natural Attenuation is amplified to normal play intensity.
Preferably, described passive amplifying circuit comprises a signal amplification chip module, described signal amplification chip module is a Programmable Logic Controller, after described input terminal, lead-out terminal, wire rod connect, detect the signal strength signal intensity of wire rod output, write the signal amplification procedure according to detected signal strength signal intensity, by CD writers, the signal amplification procedure of writing is write in Programmable Logic Controller.
Preferably, 4 groups of holding wires are arranged in described wire rod, detect the signal strength signal intensity of 4 groups of holding wires in wire rod, according to 4 groups of signal strength signal intensities, write signal amplification procedure burning.
Preferably, described housing is the kirsite housing.
Preferably, described wire conductor is the oxygen-free copper silver coating material.
Preferably, described wire rod is provided with the high-strength nylon net outward.
Preferably, described circuit board is four-layer circuit board.
Preferably, described interface is copper gilding.
Preferably, four layers of screen are set between described wire conductor and nylon wire.
Owing to having adopted such scheme, passive amplifying type HDMI connecting line of the present invention is exported after by passive amplifying circuit, the signal after Natural Attenuation being amplified to the required signal strength signal intensity of normal play, the live load of passive amplifying circuit is determined according to the signal strength signal intensity received, and has reduced the load of circuit; And, with constant signal strength signal intensity output, eliminated the impact of the length of wire rod on the output signal power, applicability is better; In addition, the volume of splicing ear and connecting line significantly reduces, and the poling operation while going for the finishing wiring, be convenient to the laying of circuit.
The accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation.
Embodiment
As shown in Figure 1, the input terminal 1 that passive amplifying type HDMI connecting line described in the present embodiment is connected with picture output device, the lead-out terminal 2 be connected with video reception apparatus, and the wire rod 3 that connects input terminal 1 and lead-out terminal 2, described lead-out terminal comprises a housing 21, described housing 21 is provided with the output interface 22 be connected with video reception apparatus, between described interface 22 and equipment, by a circuit board, be connected, comprise a passive amplifying circuit on described circuit board, described passive amplifying circuit is exported by output interface after the signal after the wire rod Natural Attenuation is amplified to normal play intensity.
During use, input terminal 1 is connected with picture output device, lead-out terminal 2 is connected with video reception apparatus, start picture output device and picture output device, vision signal enters wire rod 3 through input terminal 1, arrive lead-out terminal 2 after the Natural Attenuation in wire rod 3, lead-out terminal 2 is amplified to 60dB through passive amplifying circuit by the vision signal after Natural Attenuation, then outputs to video reception apparatus.
The passive amplifying circuit of the present embodiment comprises a Programmable Logic Controller, a signal amplifies IC, after described input terminal, lead-out terminal, wire rod connect, detect the signal strength signal intensity of 4 groups of holding wires in wire rod, write the signal amplification procedure according to detected signal strength signal intensity, by CD writers, the signal amplification procedure of writing is write in Programmable Logic Controller.In the IC of active amplifying circuit in the past, to receive on wire rod after programmed, program directly is amplified to the maximum of this IC, in this enforcement, be after wire rod connects, coding again, then burning, because 4 groups of holding wires are arranged in wire rod, because the material technology of wire rod can not cause the signal attenuation degree in every group of holding wire also different, can obtain to greatest extent stable signal output so carry out after input carrying out again writing with burning of program after wire rod connects, make 4 groups of holding wires all with identical steady state value output.
In addition, in order to strengthen the intensity of housing, and the heat radiation of reinforcement housing, increasing the service life, in the present embodiment, described housing is the kirsite housing.
In order to reduce the decay of signal in wire rod, further reduce the load that signal amplifies IC, described wire conductor is the oxygen-free copper silver coating material.
Due to wire rod, installing, often pullled or rub in the poling process, for anti-ly pullling of improving wire rod, friction resistant ability, in the present embodiment, described wire rod is provided with the high-strength nylon net outward.
In order to reduce the area of circuit board, dwindle the volume of lead-out terminal, in the present embodiment, described circuit board is four-layer circuit board.
In the present embodiment, described interface is copper gilding.After using copper gilding, one can help signal to amplify the IC heat radiation, and the situation that second can solve the loose contact that frequent plug causes occurs.
In addition, in order to reduce the interference to signal transmission in wire rod of electromagnetic wave in environment, improve the stability of signal transmission, in the present embodiment, four layers of screen are set between described wire conductor and nylon wire.Screen can adopt aluminium foil, insulation rubber, traverse net to be used in combination.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (9)
1. passive amplifying type HDMI connecting line, comprise: the input terminal be connected with picture output device, the lead-out terminal be connected with video reception apparatus, and the wire rod that connects input terminal and lead-out terminal, it is characterized in that: described lead-out terminal comprises a housing, described housing is provided with the output interface be connected with video reception apparatus, between described interface and equipment, by a circuit board, be connected, comprise a passive amplifying circuit on described circuit board, described passive amplifying circuit is exported by output interface after the signal after the wire rod Natural Attenuation is amplified to normal play intensity.
2. passive amplifying type HDMI connecting line as claimed in claim 1, it is characterized in that: described passive amplifying circuit comprises a signal amplification chip module, described signal amplification chip module is a Programmable Logic Controller, after described input terminal, lead-out terminal, wire rod connect, detect the signal strength signal intensity of wire rod output, write the signal amplification procedure according to detected signal strength signal intensity, by CD writers, the signal amplification procedure of writing is write in Programmable Logic Controller.
3. passive amplifying type HDMI connecting line as claimed in claim 2, is characterized in that: 4 groups of holding wires are arranged in described wire rod, detect the signal strength signal intensity of 4 groups of holding wires in wire rod, according to 4 groups of signal strength signal intensities, write signal amplification procedure burning.
4. passive amplifying type HDMI connecting line as claimed in claim 3, it is characterized in that: described housing is the kirsite housing.
5. passive amplifying type HDMI connecting line as claimed in claim 4, it is characterized in that: described wire conductor is the oxygen-free copper silver coating material.
6. passive amplifying type HDMI connecting line as claimed in claim 5, it is characterized in that: described wire rod is provided with the high-strength nylon net outward.
7. passive amplifying type HDMI connecting line as claimed in claim 6, it is characterized in that: described circuit board is four-layer circuit board.
8. passive amplifying type HDMI connecting line as claimed in claim 7, it is characterized in that: described interface is copper gilding.
9. passive amplifying type HDMI connecting line as claimed in claim 8, is characterized in that: four layers of screen are set between described wire conductor and nylon wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104087902A CN103474843A (en) | 2013-09-10 | 2013-09-10 | Passive amplification type HDMI connecting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104087902A CN103474843A (en) | 2013-09-10 | 2013-09-10 | Passive amplification type HDMI connecting wire |
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| CN103474843A true CN103474843A (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013104087902A Pending CN103474843A (en) | 2013-09-10 | 2013-09-10 | Passive amplification type HDMI connecting wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485169A (en) * | 2014-11-06 | 2015-04-01 | 常州市荣顺电子有限公司 | Anti-interference automobile sound equipment signal wire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040081232A1 (en) * | 1997-04-22 | 2004-04-29 | Silicon Laboratories Inc. | Isolation system with digital communication across a capacitive barrier |
| CN101150696A (en) * | 2007-10-19 | 2008-03-26 | 中兴通讯股份有限公司 | Method and device for improving receiving performance of high-definition multimedia interface |
| CN201084854Y (en) * | 2007-08-14 | 2008-07-09 | 大卫电子股份有限公司 | A cable structure that can extend HDMI signal transmission distance |
| CN201134596Y (en) * | 2007-10-31 | 2008-10-15 | 凯颖电子(深圳)有限公司 | Amplified transmission cable of high-resolution digital video and audio signal |
-
2013
- 2013-09-10 CN CN2013104087902A patent/CN103474843A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040081232A1 (en) * | 1997-04-22 | 2004-04-29 | Silicon Laboratories Inc. | Isolation system with digital communication across a capacitive barrier |
| CN201084854Y (en) * | 2007-08-14 | 2008-07-09 | 大卫电子股份有限公司 | A cable structure that can extend HDMI signal transmission distance |
| CN101150696A (en) * | 2007-10-19 | 2008-03-26 | 中兴通讯股份有限公司 | Method and device for improving receiving performance of high-definition multimedia interface |
| CN201134596Y (en) * | 2007-10-31 | 2008-10-15 | 凯颖电子(深圳)有限公司 | Amplified transmission cable of high-resolution digital video and audio signal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485169A (en) * | 2014-11-06 | 2015-04-01 | 常州市荣顺电子有限公司 | Anti-interference automobile sound equipment signal wire |
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Application publication date: 20131225 |