CN103219625B - A kind of HDMI and control signal list netting twine extender - Google Patents
A kind of HDMI and control signal list netting twine extender Download PDFInfo
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- CN103219625B CN103219625B CN201210019352.2A CN201210019352A CN103219625B CN 103219625 B CN103219625 B CN 103219625B CN 201210019352 A CN201210019352 A CN 201210019352A CN 103219625 B CN103219625 B CN 103219625B
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- hdmi
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- netting twine
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Abstract
The invention provides a kind of HDMI and control signal list netting twine extender, including by the interconnective transmitting terminal of cable and receiving terminal；Described transmitting terminal includes HDMI signal receiving device, Linx net protocol code device, transmitting terminal supply unit and transmitting terminal central control unit；Described receiving terminal includes HDMI sender unit, Linx net protocol decoding apparatus, receiving terminal supply unit and receiving terminal central control unit；Described HDMI signal receiving device and Linx net protocol code device connect；Described transmitting terminal supply unit is connected with HDMI signal receiving device, Linx net protocol code device and transmitting terminal central control unit respectively；Described transmitting terminal central control unit is connected with HDMI signal receiving device and Linx net protocol code device respectively；Described HDMI sender unit and Linx net protocol decoding apparatus connect；This HDMI signal netting twine extender disclosure satisfy that the transmission of the HDMI of the distance of user.
Description
Technical field
The present invention relates to the prolongation technical field of HD video, particularly relate to a kind of HDMI and control signal list netting twine prolongs
Long device.
Background technology
HDMI, as a kind of emerging digital audio/video interface, occurred to the present from 2002, has been obtained for recognizing of market
Can, present high definition DVD, HDTV etc. is all equipped with HDMI, it suffices to say that HDMI has become as now
The main flow of video interface.But, HDMI is the high-definition video signal without compression due to transmission, and its bandwidth is the highest, 1080p
The HDMI signal bandwidth of resolution and 60hz refresh rate has just reached 5Gbps, high bandwidth can perfect high definition display effect, but
It is the transmission range that simultaneously greatly limit again HDMI signal, it is however generally that, use common HDMI cable can only transmit 7 meters of left sides
Right.And in real applied environment, generally require and HDMI signal is extended tens meters of rice the most up to a hundred, HDMI signal extender
This series products just, by HDMI signal extender, can extend a certain distance by HDMI signal, the most common HDMI
Signal extender substantially has three kinds, and one is to add balancing chip in HDMI client cables, the general distance that extends at about 40 meters,
One is HDMI signal to be converted to netting twine signal extend, the general distance that extends at about 50 meters, also one be by
HDMI signal is converted into fiber-optic signal, and the general distance that extends is at about 500 meters.
The HDMI extender of market has use HDMI cable to add balancing chip at present, and HDMI turns netting twine, and HDMI turns optical fiber three
Kind, and the present invention the most close be the HDMI HDMI extender that turns netting twine.It is this by HDMI signal is converted into netting twine
The HDMI extender of signal is made up of transmitting terminal and receiving terminal two parts, and wherein HDMI signal is converted into netting twine letter by transmitting terminal
Number, and netting twine signals revivification is become HDMI signal by receiving terminal.Transmission medium use two netting twines, it is desirable to use CAT5E and
CAT6 netting twine, the effect of the distance extended and prolongation can be had a great impact by the quality of netting twine, in general best in use
Netting twine in the case of can be only achieved the prolongation distance of 50 meters.This HDMI netting twine extender can only transmit HDMI signal.
Existing HDMI signal netting twine extender needs to use two netting twines to carry out HDMI signal prolongation, at Specific construction cloth
The when of line, cost can be increased, but also trouble point can be increased；Existing HDMI signal netting twine extender can only be by HDMI signal
Extend 50 meters, and be in the case of using best netting twine, and the Video Applications place slightly having scale at some, 50 meters can not
Meet on-the-spot demand, and to from the point of view of in engineering, they typically will not remove to buy best netting twine, thus can make HDMI signal
Prolongation distance have a greatly reduced quality, can not meet the original intention of design；Existing HDMI signal netting twine extender can only transmit HDMI letter
Number, and the most often also needing to transmit number control signal, such as RS232 signal and usb signal, if using existing
HDMI signal netting twine extender, in addition it is also necessary to for the individually designed transmission link of these control signals, cost and increase can be increased equally
The trouble point of system.
In a word, current HDMI signal netting twine extender cannot meet the transmission of the HDMI of the distance of user.
Thus, a technical problem that those skilled in the art urgently solve is presently required exactly: how to find a kind of new
The HDMI signal netting twine extender of type, this HDMI signal netting twine extender disclosure satisfy that the transmission of the HDMI of the distance of user.
Summary of the invention
A technical problem to be solved by this invention is to provide single netting twine extender of a kind of HDMI and control signal, should
HDMI signal netting twine extender disclosure satisfy that the transmission of the HDMI of the distance of user.
In order to solve the problems referred to above, the invention discloses single netting twine extender of a kind of HDMI and control signal, including leading to
Cross the interconnective transmitting terminal of cable and receiving terminal；Described transmitting terminal includes that HDMI signal receiving device, Linx-Net agreement are compiled
Code device, transmitting terminal supply unit and transmitting terminal central control unit；Described receiving terminal include HDMI sender unit,
Linx-Net protocol-decoding device, receiving terminal supply unit and receiving terminal central control unit；Described HDMI signal receiving device
Connect with Linx-Net protocol code device；Described transmitting terminal supply unit respectively with HDMI signal receiving device, Linx-Net
Protocol code device and transmitting terminal central control unit connect；Described transmitting terminal central control unit receives with HDMI signal respectively
Device and Linx-Net protocol code device connect；Described HDMI sender unit and Linx-Net protocol-decoding device are even
Connect；Described receiving terminal supply unit is central with HDMI sender unit, Linx-Net protocol-decoding device and receiving terminal respectively
Control device to connect；Described receiving terminal central control unit fills with HDMI sender unit and Linx-Net protocol-decoding respectively
Put connection；Linx-Net protocol code device uses fpga chip；Described fpga chip can be by described TTL signal and I2S sound
Frequently signal encodes, it is thus achieved that Linx-Net protocol signal.
Preferably, the chip that described HDMI signal receiving device is used includes SII9135 chip, described SII9135 core
Sheet supports HDMI1.3 agreement and HDCP agreement.
Preferably, the video signal of the HDMI signal received can be decoded into TTL signal by described SII9135 chip；
The audio signal decoding of the HDMI signal received can be become I2S audio signal by described SII9135 chip.
Preferably, described Linx-Net protocol signal can carry out extending transmission by single netting twine.
Preferably, single netting twine extends the distance range of transmission is 0 180 meters.
Preferably, Linx-Net protocol-decoding device uses fpga chip；Described fpga chip can be by described Linx-
Net protocol signal is decoded, it is thus achieved that TTL signal and I2S audio signal.
Preferably, the chip that described HDMI sender unit is used includes SII9134 chip, described SII9134 core
Sheet supports HDMI1.3 agreement and HDCP agreement.
Preferably, described SII9134 chip can decode the TTL signal and I2S coding audio signal that be obtained,
Obtain HDMI signal.
Preferably, also include:
Control signal includes RS232 and usb signal；Described RS232 signal and usb signal are input to Linx-Net agreement and compile
The fpga chip of code device carries out Signal coding, by described TTL signal and I2S coding audio signal, it is thus achieved that Linx-
Net protocol signal；Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol-decoding device carry out
Decoding, is decoded described Linx-Net protocol signal, it is thus achieved that TTL signal and I2S audio signal.
Compared with prior art, the invention have the advantages that
1, extender of the present invention use Linx-Net agreement, can by audio frequency and video and control signal lossless encoding/decoding, thus
Realizing the prolongation of HDMI signal, compare with existing HDMI signal netting twine extender, extender of the present invention has only to use single
Netting twine can be transmitted, and can save wiring cost and reduce the trouble point of system.
2, extender of the present invention supports that the HDMI of 180 meters extends, and does not has particular/special requirement to netting twine, and common CAT5 is i.e.
Can.
3, the same of the prolongation of HDMI signal, the most also support RS232 signal and usb signal not only supported by extender of the present invention
Shi Yanchang, it is not necessary to redesign single transmission link for these control signals, also can reduce system while reducing cost
Trouble point.
In a word, the invention provides a kind of novel HDMI signal netting twine extender of offer, this HDMI signal netting twine extends
Device disclosure satisfy that the transmission of the HDMI of the distance of user.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, required use in below embodiment being described
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this
From the point of view of the those of ordinary skill of field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of HDMI of the present invention and the structural representation of control signal list netting twine extender embodiment 1；
Wherein, 1, HDMI signal receiving device 2, Linx-Net protocol code device；3, transmitting terminal supply unit；4, launch
End central control unit；5, Linx-Net protocol-decoding device；6, HDMI sender unit；7, receiving terminal supply unit；8、
Receiving terminal central control unit；9, transmitting terminal；10, receiving terminal；11, cable；
Fig. 2 is a kind of HDMI of the present invention and the structural representation of control signal list netting twine extender embodiment 2；
Fig. 3 is the flow chart of steps of the mode of operation of transmitting terminal in the present invention；
Fig. 4 is the flow chart of steps of the mode of operation of receiving terminal in the present invention.
Detailed description of the invention
Embodiments providing single netting twine extender of a kind of HDMI and control signal, this HDMI signal netting twine extends
Device disclosure satisfy that the transmission of the HDMI of the distance of user.
For making the goal of the invention of the present invention, feature, the advantage can be the most obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that described reality
Executing example is only a part of embodiment of the present invention, and not all embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
One of core concept of the present invention there is provided a kind of HDMI and control signal list netting twine extender, including passing through line
The interconnective transmitting terminal of cable and receiving terminal；Described transmitting terminal includes that HDMI signal receiving device, Linx-Net protocol code fill
Put, transmitting terminal supply unit and transmitting terminal central control unit；Described receiving terminal includes HDMI sender unit, Linx-Net
Protocol-decoding device, receiving terminal supply unit and receiving terminal central control unit；Described HDMI signal receiving device and Linx-
Net protocol code device connects；Described transmitting terminal supply unit respectively with HDMI signal receiving device, Linx-Net protocol code
Device and transmitting terminal central control unit connect；Described transmitting terminal central control unit respectively with HDMI signal receiving device and
Linx-Net protocol code device connects；Described HDMI sender unit and Linx-Net protocol-decoding device connect；Described
Receiving terminal supply unit respectively with HDMI sender unit, Linx-Net protocol-decoding device and receiving terminal central control unit
Connect；Described receiving terminal central control unit is connected with HDMI sender unit and Linx-Net protocol-decoding device respectively；
This HDMI signal netting twine extender disclosure satisfy that the transmission of the HDMI of the distance of user.
In order to make those of ordinary skill in the art be more fully understood that the present invention, the technical term being described below in the present invention,
Described in detail below:
HDMI:HDMI refers to HDMI, be 2002 by Hitachi, Panasonic, Philip, Silicon
The one that 7 companies such as Image, Sony, Thomson, Toshiba are set up jointly HDMI high-definition media interface interface organization releases
Digitized video/audio interface technology, is the tailored version digital interface being suitable for image transmission, and it can transmit audio frequency and shadow simultaneously
Tone signal, the maximum data transmission speed is that 5Gbps definition can reach 1080p resolution and 60hz refresh rate.
Linx-Net: high-definition multimedia signal codec algorithm protocol, can be carried out high-definition multimedia signal
Lossless encoding/decoding.
HDCP: high-bandwidth content protection agreement, is mainly used in HDMI.
FPGA: field programmable gate array.
TTL: transistor logic level signal.
I2S: the bus standard of voice data transmission between digital audio-frequency apparatus.
With reference to Fig. 1, it is shown that a kind of HDMI and the structural representation of control signal list netting twine extender embodiment 1, specifically
May include that
A kind of HDMI and control signal list netting twine extender, including by the interconnective transmitting terminal of cable 9 and receiving terminal
10；Described transmitting terminal 9 includes HDMI signal receiving device 1, Linx-Net protocol code device 2, transmitting terminal supply unit 3 and sends out
Penetrate end central control unit 4；Described receiving terminal 10 includes HDMI sender unit 6, Linx-Net protocol-decoding device 57, connects
Receiving end supply unit and receiving terminal central control unit 8；Described HDMI signal receiving device 1 and Linx-Net protocol code device
2 connect；Described transmitting terminal supply unit 3 respectively with HDMI signal receiving device 1, Linx-Net protocol code device 2 and launch
End central control unit 3 connects；Described transmitting terminal central control unit 4 respectively with HDMI signal receiving device 1 and Linx-Net
Protocol code device 2 connects；Described HDMI sender unit 6 and Linx-Net protocol-decoding device 5 connects；Described receiving terminal
Supply unit 7 connects 8 with HDMI sender unit 6, Linx-Net protocol-decoding device 5 and receiving terminal central control unit respectively
Connect；Described receiving terminal central control unit 8 is connected with HDMI sender unit 6 and Linx-Net protocol-decoding device 5 respectively.
The chip that described HDMI signal receiving device 1 is used includes SII9135 chip, and described SII9135 chip supports HDMI1.3 association
Negotiation HDCP agreement.The video signal of the HDMI signal received can be decoded into TTL signal by described SII9135 chip；Institute
State SII9135 chip and the audio signal decoding of the HDMI signal received can be become I2S audio signal.Linx-Net agreement is compiled
Code device 2 uses fpga chip；Described fpga chip can be by described TTL signal and I2S coding audio signal, it is thus achieved that
Linx-Net protocol signal.Described Linx-Net protocol signal can carry out extending transmission by single netting twine.Single netting twine prolongs
The distance range of long transmission is 0 180 meters.Linx-Net protocol-decoding device 6 uses fpga chip；Described fpga chip can
Described Linx-Net protocol signal is decoded, it is thus achieved that TTL signal and I2S audio signal.Described HDMI sender unit 5
The chip used includes SII9134 chip, and described SII9134 chip supports HDMI1.3 agreement and HDCP agreement.Described
SII9134 chip can decode the TTL signal and I2S coding audio signal that be obtained, it is thus achieved that HDMI signal.Control letter
Number include RS232 signal and usb signal；Described RS232 signal and usb signal are input to Linx-Net protocol code device 2
Fpga chip carries out Signal coding, by described TTL signal and I2S coding audio signal, it is thus achieved that Linx-Net agreement is believed
Number；Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol-decoding device 6 be decoded, by institute
State Linx-Net protocol signal to be decoded, it is thus achieved that TTL signal and I2S audio signal.
Below by specific embodiment and accompanying drawing, technical scheme is further detailed.
With reference to Fig. 2, it is shown that a kind of HDMI and the structural representation of control signal list netting twine extender embodiment 2, specifically
May include that
In fig. 2, video source is connected to HDMI as video-out port, it is generally the case that video source is one
Individual DVD player, HD DVD player, blue-ray DVD player, CATV set-top-box, satellite TV set-top boxes or computer.Depending on
Frequently the output port in source is equipped with suitable cable with the input port of the transmitting terminal of the present invention.Under normal circumstances, suitable cable
It is a HDMI cable, USB cable, RS232 cable.
Digital video signal and control signal can be converted into single netting twine signal by the transmitting terminal in the present invention, this
Single netting twine signals revivification is then become digital video signal and control signal by bright middle receiving terminal.Transmitting terminal and receiving terminal are by single
Root netting twine connects, and its distance can reach 180 meters.
The output port of the receiving terminal of the present invention and the input electricity mouth of display are connected by suitable cable, normal conditions
Under, cable is a HDMI cable, USB cable and RS232 cable.
Display is the content in order to show application, such as video.Under normal circumstances, display is a fine definition electricity
Depending on, including LCD TV, plasm TV, DLP TV, or computer monitor, show including liquid crystal display and other flat boards
Show device, also comprise projector and the scialyscope of fine definition simultaneously.
With reference to Fig. 3, it is shown that the flow chart of steps of the mode of operation of transmitting terminal in the present invention.
From Fig. 3, it can be seen that the step of the mode of operation of transmitting terminal in the present invention, described in detail below:
1) the HDMI signal receiving part of transmitting terminal divides employing Silicon Image company SII9135 chip；
Wherein, Silicon Image company SII9135 chip supports HDMI1.3a agreement.
2) video section of the HDMI signal received is decoded by SII9135 chip becomes the TTL signal of 36bit, simultaneously
The audio-frequency unit of the HDMI signal received can also be decoded and become I2S audio signal,
Wherein, SII9135 chip can also support HDCP agreement.
3) TTL signal of 36bit and I2S audio-frequency signal coding can be become the Linx-Net agreement of standard by fpga chip
Signal, thus extended by single netting twine；
Wherein, Linx-Net protocol code part uses the fpga chip that those of ordinary skill in the art commonly use.
4) control signal RS232 and usb signal are directly inputted to inside fpga chip carry out encoding and decoding, thus realize and
The purpose that HDMI extends together.
With reference to Fig. 4, it is shown that the flow chart of steps of the mode of operation of receiving terminal in the present invention.
From FIG. 4, it can be seen that the step of the mode of operation of receiving terminal in the present invention, described in detail below:
1) receiving terminal first passes through fpga chip becomes TTL signal and the I2S audio frequency of standard by the decoding of Linx-Net signal
Signal；
Wherein, Linx-Net protocol code part uses the fpga chip that those of ordinary skill in the art commonly use.
2) TTL signal and I2S audio-frequency signal coding are become HDMI signal by SII9134 chip；
Wherein, SII9134 chip uses the SII9134 chip of Silicon Image company.
3) control signal RS232 and usb signal are directly inputted to inside fpga chip carry out encoding and decoding, thus realize and
The purpose that HDMI signal extends together.
Single netting twine extender of a kind of HDMI provided by the present invention and control signal can realize single netting twine and extend HDMI
With signal control；Extend distance and can reach 180 meters；Reduce cost；Reduce the fault point.
In a word, the invention provides single netting twine extender of a kind of HDMI and control signal, this HDMI signal netting twine extends
Device disclosure satisfy that the transmission of the HDMI of the distance of user.
Each embodiment in this specification all uses the mode gone forward one by one to describe, what each embodiment stressed is with
The difference of other embodiments, between each embodiment, identical similar part sees mutually.For system embodiment
For, due to itself and embodiment of the method basic simlarity, so describe is fairly simple, relevant part sees the portion of embodiment of the method
Defend oneself bright.
Above single netting twine extender of a kind of HDMI provided by the present invention and control signal is described in detail, this
Applying specific case in literary composition to be set forth principle and the embodiment of the present invention, the explanation of above example is only intended to
Help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the think of of the present invention
Thinking, the most all will change, in sum, it is right that this specification content should not be construed as
The restriction of the present invention.
Claims (9)
1. a HDMI and control signal list netting twine extender, it is characterised in that include by the interconnective transmitting terminal of cable
And receiving terminal；Described transmitting terminal include HDMI signal receiving device, Linx-Net protocol code device, transmitting terminal supply unit and
Transmitting terminal central control unit；Described receiving terminal includes HDMI sender unit, Linx-Net protocol-decoding device, receiving terminal
Supply unit and receiving terminal central control unit；Described HDMI signal receiving device and Linx-Net protocol code device connect；
Described transmitting terminal supply unit controls with HDMI signal receiving device, Linx-Net protocol code device and transmitting terminal central authorities respectively
Device connects；Described transmitting terminal central control unit connects with HDMI signal receiving device and Linx-Net protocol code device respectively
Connect；Described HDMI sender unit and Linx-Net protocol-decoding device connect；Described receiving terminal supply unit respectively with
HDMI sender unit, Linx-Net protocol-decoding device and receiving terminal central control unit connect；Described receiving terminal central authorities
Control device to be connected with HDMI sender unit and Linx-Net protocol-decoding device respectively；Linx-Net protocol code device
Use fpga chip；Described fpga chip is by TTL signal and I2S coding audio signal, it is thus achieved that Linx-Net protocol signal.
HDMI the most according to claim 1 and control signal list netting twine extender, it is characterised in that:
The chip that described HDMI signal receiving device is used includes SII9135 chip, and described SII9135 chip is supported
HDMI1.3 agreement and HDCP agreement.
HDMI the most according to claim 2 and control signal list netting twine extender, it is characterised in that:
The video signal of the HDMI signal received can be decoded into TTL signal by described SII9135 chip；Described SII9135
The audio signal decoding of the HDMI signal received can be become I2S audio signal by chip.
HDMI the most according to claim 1 and control signal list netting twine extender, it is characterised in that:
Described Linx-Net protocol signal can carry out extending transmission by single netting twine.
HDMI the most according to claim 4 and control signal list netting twine extender, it is characterised in that:
It is 0 180 meters that single netting twine extends the distance range of transmission.
HDMI the most according to claim 1 and control signal list netting twine extender, it is characterised in that:
Linx-Net protocol-decoding device uses fpga chip；The fpga chip that Linx-Net protocol-decoding device uses is by described
Linx-Net protocol signal is decoded, it is thus achieved that TTL signal and I2S audio signal.
HDMI the most according to claim 1 and control signal list netting twine extender, it is characterised in that:
The chip that described HDMI sender unit is used includes SII9134 chip, and described SII9134 chip is supported
HDMI1.3 agreement and HDCP agreement.
HDMI the most according to claim 7 and control signal list netting twine extender, it is characterised in that:
Described SII9134 chip can decode the TTL signal and I2S coding audio signal that be obtained, it is thus achieved that HDMI believes
Number.
HDMI the most according to claim 1 and control signal list netting twine extender, it is characterised in that also include:
Control signal includes RS232 and usb signal；Described RS232 signal and usb signal are input to Linx-Net protocol code dress
The fpga chip put carries out Signal coding, by described TTL signal and I2S coding audio signal, it is thus achieved that Linx-Net assists
View signal；Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol-decoding device be decoded,
Described Linx-Net protocol signal is decoded, it is thus achieved that TTL signal and I2S audio signal.
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| CN201210019352.2A CN103219625B (en) | 2012-01-20 | 2012-01-20 | A kind of HDMI and control signal list netting twine extender |
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| CN201210019352.2A CN103219625B (en) | 2012-01-20 | 2012-01-20 | A kind of HDMI and control signal list netting twine extender |
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| CN104023194A (en) * | 2014-05-30 | 2014-09-03 | 浙江一舟电子科技股份有限公司 | In-wall single-cable extender for HDMI (High-Definition Multimedia Interface) |
| CN106791555A (en) * | 2016-12-29 | 2017-05-31 | 龙迅半导体（合肥）股份有限公司 | A kind of single netting twine extender of data transmission method, HDMI signals |
| CN113766162A (en) * | 2021-09-02 | 2021-12-07 | 张龙坤 | Infinite cascade long-distance audio and video transmission method and extension system |
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| CN201078826Y (en) * | 2007-06-13 | 2008-06-25 | 铭鹏科技股份有限公司 | Improved structure of image and sound signal extender |
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| JP4972152B2 (en) * | 2007-03-01 | 2012-07-11 | パナソニック株式会社 | Data processing apparatus and power supply control method thereof |
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| CN101212112A (en) * | 2006-12-28 | 2008-07-02 | 鸿富锦精密工业（深圳）有限公司 | Video signal switching device |
| CN101076123A (en) * | 2007-06-13 | 2007-11-21 | 北京华纬讯电信技术有限公司 | Video telecommunication system and method based on HDMI interface |
| CN201078826Y (en) * | 2007-06-13 | 2008-06-25 | 铭鹏科技股份有限公司 | Improved structure of image and sound signal extender |
| CN101894537A (en) * | 2010-06-30 | 2010-11-24 | 清远市佳的美电子科技有限公司 | Multi-information source switching control system of presentation terminal |
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| CN103219625A (en) | 2013-07-24 |
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