CN208401223U - HDMI conducting slip ring and HDMI conducting slip ring signal transmission system - Google Patents

Abstract

The utility model discloses a kind of HDMI conducting slip rings, including the HDMI signal amplifier being connected with HDMI conducting slip ring one end, wherein, the HDMI conducting slip ring is used to send HDMI signal to the HDMI signal amplifier, and the HDMI signal amplifier is for amplifying the HDMI signal.It can be seen that, HDMI conducting slip ring provided by the utility model is integrated with HDMI signal amplifier, during transmitting HDMI signal, the HDMI signal amplifier can amplify HDMI signal, thus the transmission range for increasing transmission bandwidth, reducing HDMI loss of signal, extending HDMI signal.The utility model additionally provides a kind of HDMI signal transmission system, acts on corresponding with a kind of above-mentioned effect of HDMI conducting slip ring.

Description

HDMI conducting slip ring and HDMI conducting slip ring signal transmission system

Technical field

The utility model relates to conductive slip ring fields, sliding more particularly to a kind of HDMI conducting slip ring and a kind of HDMI conduction Ring signal Transmission system.

Background technique

With social development, the rapid development of the industries such as video display is entertained, video/audio technology also constantly makes progress.Wherein, HDMI, full name high-definition multimedia interface are designed to replace the older audio-visual transmission interface of simulation.HDMI is a kind of total Word video and sound transmission interface, it supports all kinds of TVs and computerized image format, including SDTV, HDTV video pictures, also There is multi-sound channel digital audio.In transmission, various video datas will be minimized differential signal transmission skill by HDMI transceiving chip Art is encoded into data packet.Correspondingly, high bandwidth and high speed rate not only may be implemented in the HDMI cable for being used for transmission HDMI signal Transmission, can also realize simultaneous transmission vision signal and audio signal.

Conducting slip ring is a kind of for realizing the electrical connection that power, signal transmit between two relative rotation mechanisms.It answers Conducting slip ring for the transmission of HDMI signal is commonly known as HDMI conducting slip ring, with the hair of high definition image and high-clear display Exhibition, more and more electronic equipments, especially high definition show integration of equipments HDMI conducting slip ring.

But common HDMI conducting slip ring is difficult to meet the transmission bandwidth of HDMI2.0 Version Spec, it is at 4K and 2K points In the case where resolution, loss of signal will be very big, and transmission range is shorter.For example, common HDMI conducting slip ring is transmitting Loss is just generated in video, audio more than 3,000,000.In addition, this field is there is a method in which be exactly to use high frequency slip ring and radio frequency Cable transmission vision signal, although this method transmission performance is good, cost is high, and can only transmit video, if Transmission audio needs other route.

As it can be seen that how to research and develop one kind in transmission HDMI signal process, transmission bandwidth is smaller, loss of signal is larger, transmission The shorter HDMI conducting slip ring of distance, is that assistant officer waits for that those skilled in the art solve the problems, such as.

Utility model content

The purpose of the utility model is to provide a kind of HDMI conducting slip ring and a kind of HDMI conducting slip ring Transmission system, to Tradition HDMI conducting slip ring is solved during transmitting HDMI signal, transmission bandwidth is smaller, loss of signal is larger, transmission range Shorter problem.

In order to solve the above technical problems, the utility model provides a kind of HDMI conducting slip ring, comprising: conductive with the HDMI The HDMI signal amplifier that slip ring one end is connected；

Wherein, the HDMI conducting slip ring is used to send the HDMI signal amplifier, the HDMI for HDMI signal Signal amplifier is for amplifying the HDMI signal.

Preferably, one end of the HDMI conducting slip ring is provided with HDMI connector, sets on the HDMI signal amplifier It is equipped with HDMI interface, the HDMI connector and the HDMI interface, which cooperate, to be connected.

Preferably, the HDMI signal amplifier is connected with the stator terminal of the HDMI conducting slip ring, the stator terminal It is connected with the rotor-end of the HDMI conducting slip ring.

Preferably, the stator terminal is provided with the first stationary brushes and the second stationary brushes, first stationary brushes and TMDS signal wire is staggeredly distributed on second stationary brushes.

Preferably, the TMDS signal wire is connected with the rotor-end by two contact points.

Preferably, the rotor-end is provided with cable built in rotor, cable built in the rotor and the external cable phase of rotor Connection, cable built in the rotor and the external cable connection of the rotor are surrounded by shielding material；

The stator terminal is provided with cable built in stator, and cable built in the stator is connected with the external cable of stator, institute It states cable built in stator and the external cable connection of the stator is surrounded by shielding material.

Preferably, cable built in the rotor, the external cable of the rotor, cable built in the stator, outside the stator Setting cable includes 19 root cables, and each sub-line cable is surrounded by shielding material with the corresponding external place of sub-line cable.

Preferably, the shielding material includes aluminium foil, gauze screen and outer quilt.

The utility model additionally provides a kind of HDMI conducting slip ring signal transmission system, including transmitting terminal and receiving end, also Including above-mentioned HDMI conducting slip ring, the HDMI conducting slip ring be connected with the HDMI signal amplifier one end and the reception End is connected by HDMI cable, and the other end of the HDMI conducting slip ring is connected with the transmitting terminal by HDMI cable.

Preferably, the characteristic impedance value of the HDMI conducting slip ring is two times of the normal impedance value of the HDMI cable.

A kind of HDMI conducting slip ring provided by the utility model, including what is be connected with HDMI conducting slip ring one end HDMI signal amplifier, wherein the HDMI conducting slip ring is used to send the HDMI signal amplifier, institute for HDMI signal HDMI signal amplifier is stated for amplifying the HDMI signal.As it can be seen that HDMI conducting slip ring provided by the utility model Be integrated with HDMI signal amplifier, during transmitting HDMI signal, the HDMI signal amplifier can to HDMI signal into Row amplification, thus the transmission range for increasing transmission bandwidth, reducing HDMI loss of signal, extending HDMI signal.

The utility model additionally provides a kind of HDMI signal transmission system, effect and a kind of above-mentioned HDMI conducting slip ring Act on corresponding, which is not described herein again.

Detailed description of the invention

For the clearer technical solution for illustrating the utility model embodiment or the prior art, below will to embodiment or Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is one structural schematic diagram of HDMI conducting slip ring embodiment provided by the utility model；

Fig. 2 is two structural schematic diagram of HDMI conducting slip ring embodiment provided by the utility model；

Fig. 3 is the structural schematic diagram of rotor central spindle provided by the utility model；

Fig. 4 is parallel-plate cavity body structure schematic diagram provided by the utility model；

Fig. 5 is the stationary brushes wire structures schematic diagram that the utility model also provides；

Fig. 6 is the connected mode schematic diagram of stationary brushes provided by the utility model and rotor central spindle；

Fig. 7 is cable shielding mode schematic diagram provided by the utility model；

Fig. 8 is a kind of structural schematic diagram of HDMI conducting slip ring signal transmission system provided by the utility model；

Fig. 9 is the trial curve figure of difference HDMI conducting slip ring impedance provided by the utility model.

Specific embodiment

The core of the utility model is to provide a kind of HDMI conducting slip ring and a kind of HDMI conducting slip ring signal transmission system, The transmission range for increasing transmission bandwidth, reducing HDMI loss of signal, extending HDMI signal.

In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation The utility model is described in further detail for mode.Obviously, described embodiment is only the utility model a part Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing Every other embodiment obtained under the premise of creative work out, fall within the protection scope of the utility model.

Start that a kind of HDMI conducting slip ring provided by the utility model is discussed in detail below, referring to Fig. 1, the utility model is mentioned Supply a kind of HDMI conducting slip ring include:

The HDMI signal amplifier 200 being connected with described 100 one end of HDMI conducting slip ring；Wherein, the HDMI is conductive Slip ring is used to send HDMI signal to the HDMI signal amplifier, and the HDMI signal amplifier is for believing the HDMI It number amplifies.

Conducting slip ring is a kind of for realizing the electrical connection that power, signal transmit between two relative rotation mechanisms. HDMI is a kind of totally digitilized video and sound transmission interface, it supports all kinds of TVs and computerized image format, including SDTV, HDTV video pictures, there are also multi-sound channel digital audios.High bandwidth not only may be implemented in the HDMI cable for being used for transmission HDMI signal High rate data transmission can also realize simultaneous transmission vision signal and audio signal.HDMI conduction involved in this embodiment is sliding Fourth finger is used for transmission the conducting slip ring of HDMI signal.

Referring to fig. 2, HDMI conducting slip ring includes rotor-end 120 and stator terminal 130.

Specifically, rotor-end includes rotor central spindle 121 referring to Fig. 3, rotor central spindle is substantially in a cylindrical shape, rotor Central spindle middle section is made of a series of parallel-plate cavitys as shown in Figure 4, and parallel-plate cavity is by conducting ring 122 and insulating trip 123 are interspersed composition, correspondingly, the middle section of rotor axis is also to be interspersed to constitute by conducting ring and insulating trip.It is excellent Choosing, conducting ring can be copper ring, the copper ring of armature spindle core segment can mark from left to right is, wherein 1#-5#, 6#-10#, 11#-15#, 16#-20# can be corresponding in turn to 4 groups of TDMS signal wires to two rings empty between each pair of signal wire, wherein 5#, 10#, 15#, 20# can be corresponding in turn to the shielding line of every group of TMDS signal wire centering, and 21#-23# can be clock cable, Wherein, 23# corresponds to the shielding line of clock cable, and 24#-27# is remaining 4 root functionality line, and 28# is the external screen of HDMI cable Cover line.

The stator terminal being connected with the rotor-end, as shown in figure 5, including two stationary brushes, respectively the first stator Brush and the second stationary brushes.First stationary brushes and the second stationary brushes are a semi-hollow cylindrical shape, two stators Brush, which cooperates, to be connected, and a complete hollow cylinder can be formed, and the hollow cylinder and rotor central spindle cooperate.Two Being furnished with 28 on a stationary brushes respectively can be with the interface of wiring.The interface on stationary brushes in Fig. 5 from top to bottom, with Fig. 3 In conducting ring by left-to-right reciprocal correspondence, that is to say, that preceding 20 interfaces of interface on stationary brushes from top to bottom corresponding 4 Group TMDS signal wire.

It should be noted that the present embodiment uses the first stationary brushes 131 and the second stator as a preferred method, Be interspersed the wire laying mode of TMDS signal wire on brush 132.That is, such as Fig. 5, if by 4 groups of TMDS signal wires according to Sequence notation from top to bottom is the first TMDS signal wire 001, the 2nd TMDS signal wire 002, the 3rd TMDS signal wire 003, the Four TMDS signal wires 004, then the 2nd TMDS signal wire and the 4th TMDS signal wire are furnished on the first stationary brushes, the first stator The first TMDS signal wire and the 3rd TMDS signal wire are furnished on brush.By this wire laying mode, TMDS letter can be effectively reduced Signal cross-talk between number line.As for remaining 8 lines, including clock cable, the shielding line of clock cable, functional line, With the exterior shield line of HDMI cable, can with as shown in figure 5, cloth on the second stationary brushes.

Stationary brushes are in contact with rotor central spindle by signal wire, the way of contact with traditional stator brush and rotor axial system Difference, as another preferred embodiment, signal wire and rotor central spindle in the present embodiment on stationary brushes there are two contact point, I Can be referred to as two o'clock coupling.For example, with reference to Fig. 6, certain root signal wire and conduction in the first TMDS signaling point 001 can be Ring 122 is in contact.Two o'clock coupling can not only reduce loss of signal of the signal in transmission process, can also improve signal biography Defeated redundancy.

As shown in Fig. 2, the HDMI signal amplifier can be connected with rotor-end.Specifically, rotor-end can be set There is HDMI connector 110, corresponding HDMI interface 210, the HDMI connection can be set on the HDMI signal amplifier Device and the HDMI interface, which cooperate, to be connected.This connection type is convenient and flexible.In addition to this, the HDMI signal amplification Device can also be connected with rotor-end by welding.Here it is worth noting that the present embodiment does not limit HDMI signal Amplifier is connected with rotor-end, that is to say, that HDMI signal amplifier also can connect in stator terminal, not in the present embodiment Influence the implementation result of the present embodiment.

Referring to fig. 2, the rotor-end of the HDMI conducting slip ring is provided with cable 140 built in rotor, in the rotor It sets cable to be connected with the external cable 150 of rotor, cable built in the rotor and the external cable connection of the rotor are surrounded by screen Cover material 160；The stator terminal is provided with cable 141 built in stator, cable built in the stator and external 151 phase of cable of stator Connection, cable built in the stator and the external cable connection of the stator are surrounded by shielding material 161.

It is made of it should be noted that defining HDMI cable in HDMI2.0 Version Spec 19 root lines, including 4 groups TMDS signal is to, 1 group of clock cable and 4 root functionality lines, wherein every group of TMDS signal is to including 1 pair of differential lines and 1 shielding Ground wire, every group of clock cable include 1 pair of twisted pair and 1 shielding earth.It follows that line built in above-mentioned rotor Cable built in the external cable of cable, rotor, stator and the external cable of stator include 19 root cables.Cable is docked with cable When, it is necessary first to remove the crust of molding cable, then finds the corresponding sub-line cable of every root cable respectively, the two is carried out Docking.For example, functional line sub-line cable should be connected to each other with functional line sub-line cable.

Shielding mode as one preferred, referring to Fig. 7, cable built in rotor and the external cable of rotor connect in the present embodiment The place of connecing can be carried out as follows shielding: every root cable is individually wrapped aluminium with the place that corresponding sub-line cable is docked Foil 010, after all having wrapped up aluminium foil at the corresponding docking of 19 sub- cables, packet again that 19 root cables are unified Aluminium foil 020 is wrapped up in, then wraps up gauze screen 030 in the aluminium foil layer outer surface, finally by 040 outside gauze screen outer layer covers, specifically Can for PVC be molded.

A kind of HDMI conducting slip ring provided in this embodiment is described in detail above, provided by the present embodiment HDMI conducting slip ring includes the HDMI signal amplifier being connected with HDMI conducting slip ring one end, the HDMI conducting slip ring For sending the HDMI signal amplifier for HDMI signal, the HDMI signal amplifier be used for by the HDMI signal into Row amplification.

As it can be seen that HDMI conducting slip ring provided by the utility model is integrated with HDMI signal amplifier, therefore, in transmission HDMI During signal, the HDMI signal amplifier can be balanced, amplify and export to the HDMI signal of distortion, to increase Transmission bandwidth, the transmission range for reducing HDMI loss of signal, extending HDMI signal.

HDMI conducting slip ring signal transmission system provided by the embodiment of the utility model is introduced below, is described below HDMI conducting slip ring signal transmission system, use above-described HDMI conducting slip ring.

Referring to Fig. 8, HDMI conducting slip ring signal transmission system provided in this embodiment includes: described in above-described embodiment HDMI conducting slip ring, the HDMI conducting slip ring is connected with one end of the HDMI signal amplifier and the receiving end 300 leads to It crosses HDMI cable 410 to be connected, the other end of the HDMI conducting slip ring passes through 411 phase of HDMI cable with the transmitting terminal 500 Connection.

Wherein, the structure about HDMI conducting slip ring may refer to the associated description of above-described embodiment, not reinflated here It introduces.But in order to which the HDMI loss of signal for guaranteeing that receiving end receives is small as far as possible, the present embodiment can be by the HDMI Signal amplifier is connected to HDMI conducting slip ring close to the side of receiving end.

The following detailed description of a kind of preferred embodiment of the present embodiment, that is, the impedance of HDMI conducting slip ring and HDMI cable Matching problem.It is known that the theoretical basis of HDMI conducting slip ring design is transmission line theory, the design of HDMI conducting slip ring is pursued Target be to keep the characteristic of HDMI conducting slip ring during rotation consistent with the transmission characteristic of HDMI cable as far as possible, it is specific to wrap It is small etc. to include impedance matching, Insertion Loss.Therefore, the characteristic impedance of HDMI conducting slip ring can be designed to as close possible to HDMI cable sheet The differential impedance value of body.And according to HDMI2.0 Version Spec, it can determine that the differential impedance standard of cable is 100 ± 10% Europe Nurse, therefore, in HDMI conducting slip ring signal transmission system, the characteristic impedance of HDMI conducting slip ring can be as close possible to 100 Ohm.

Referring to Fig. 3, rotor central spindle uses parallel plate type cavity, to keep consistent with twisted pair is balanced.And parallel-plate cavity Characteristic impedance and the size of conducting ring, the material of insulating trip and the size of slip ring be closely related, therefore change parallel-plate The relevant parameter of cavity can change the impedance of HDMI conducting slip ring.Based on this thought, we can design impedance The HDMI conducting slip ring for the desired impedance that value is wanted for us.

But, it is also noted that a bit, since the rotor central spindle of HDMI conducting slip ring is rotation, so HDMI conducting slip ring The characteristic impedance of slip ring is different when turning to different location, therefore we just not can guarantee HDMI conducting slip ring in rotation process yet In any moment, all match with the impedance of HDMI cable.And impedance mismatch just generates reflection, has reflection just to bring reflection Loss, so as to cause the decaying of signal.

In summary several points consider, for the inventor of the utility model by many experiments, final confirmation is sliding by HDMI conduction When the characteristic impedance value of ring is set as two times of the normal impedance value of HDMI cable, impedance matching effect is best, the transmission of slip ring Performance is best.Therefore, the characteristic impedance value of HDMI conducting slip ring is 200 ohm in the present embodiment as a preferred method,.

Specifically, L is insertion loss, that is, the data of gauge signal loss size in figure referring to Fig. 9.Pass through design The characteristic impedance of HDMI conducting slip ring keeps the L value of its each point in the case where rotating one week all smaller, is that our design characteristics hinder Anti- purpose.Fig. 9 is to guarantee that other experiment conditions are consistent, when only changing the characteristic impedance of HDMI conducting slip ring, obtained number According to line.Wherein, curve 1 is the characteristic impedance of HDMI conducting slip ring when being 300 ohm, the relationship of L and rotational angle θ, and curve 2 is When the characteristic impedance of HDMI conducting slip ring is 200 ohm, the relationship of L and rotational angle θ.Obviously, L of the curve 2 in all angles Curve 1 will be significantly lower than in the L value average level of all angles by being worth average level.Herein, other comparative test datas are no longer It enumerating, eventually passes through calculating, when determining that choosing characteristic impedance is selected as 200 ohm, L value average level is minimum, that is, Matching effect is optimal.

A kind of HDMI conducting slip ring signal transmission system of the offer of the present embodiment, not only by HDMI conducting slip ring Upper integrated HDMI signal amplifier, and pass through the characteristic impedance and the differential impedance phase of HDMI cable of design HDMI conducting slip ring Matching, on the basis of the above embodiments, further reduced the loss of HDMI signal, extends the transmission distance of HDMI signal From.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part Explanation.

Above to a kind of HDMI conducting slip ring provided by the utility model and a kind of HDMI conducting slip ring signal transmission system System is described in detail.Specific case used herein is expounded the principles of the present invention and embodiment, The method and its core concept of the above embodiments are only used to help understand the utility model.It should be pointed out that for this It, without departing from the principle of this utility model, can also be to the utility model for the those of ordinary skill of technical field Some improvement and modification can also be carried out, and modifications and modifications also fall within the protection scope of the claims of the utility model.

Claims (10)

1. a kind of HDMI conducting slip ring characterized by comprising the HDMI signal being connected with HDMI conducting slip ring one end Amplifier；

Wherein, the HDMI conducting slip ring is used to send the HDMI signal amplifier, the HDMI signal for HDMI signal Amplifier is for amplifying the HDMI signal.

2. HDMI conducting slip ring as described in claim 1, which is characterized in that one end of the HDMI conducting slip ring is provided with HDMI connector is provided with HDMI interface, the HDMI connector and the HDMI interface phase on the HDMI signal amplifier Mutually it is cooperatively connected.

3. HDMI conducting slip ring as described in claim 1, which is characterized in that the HDMI signal amplifier is led with the HDMI The stator terminal of electric slip ring is connected, and the stator terminal is connected with the rotor-end of the HDMI conducting slip ring.

4. HDMI conducting slip ring as claimed in claim 3, which is characterized in that the stator terminal be provided with the first stationary brushes and TMDS signal wire is staggeredly distributed on second stationary brushes, first stationary brushes and second stationary brushes.

5. HDMI conducting slip ring as claimed in claim 4, which is characterized in that the TMDS signal wire passes through with the rotor-end Two contact points are connected.

6. HDMI conducting slip ring as claimed in claim 3, which is characterized in that the rotor-end is provided with cable built in rotor, Cable built in the rotor is connected with the external cable of rotor, cable built in the rotor and the external cable connection of the rotor It is surrounded by shielding material；

The stator terminal is provided with cable built in stator, and cable built in the stator is connected with the external cable of stator, described fixed Cable built in son and the external cable connection of the stator are surrounded by shielding material.

7. HDMI conducting slip ring as claimed in claim 6, which is characterized in that cable, the rotor are external built in the rotor Cable, the external cable of the stator built in cable, the stator include 19 root cables, each sub-line cable and corresponding son The external place of cable is surrounded by shielding material.

8. HDMI conducting slip ring as claimed in claim 6, which is characterized in that the shielding material include aluminium foil, gauze screen and Outer quilt.

9. a kind of HDMI conducting slip ring signal transmission system, including transmitting terminal and receiving end, which is characterized in that further include such as right It is required that HDMI conducting slip ring described in 1-8 any one, the HDMI conducting slip ring is connected with the HDMI signal amplifier One end is connected with the receiving end by HDMI cable, and the other end and the transmitting terminal of the HDMI conducting slip ring pass through HDMI cable is connected.

10. system as claimed in claim 9, which is characterized in that the characteristic impedance value of the HDMI conducting slip ring is described Two times of the normal impedance value of HDMI cable.