CN103219625A - HDMI and control signal super single network cable extender - Google Patents
HDMI and control signal super single network cable extender Download PDFInfo
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- CN103219625A CN103219625A CN2012100193522A CN201210019352A CN103219625A CN 103219625 A CN103219625 A CN 103219625A CN 2012100193522 A CN2012100193522 A CN 2012100193522A CN 201210019352 A CN201210019352 A CN 201210019352A CN 103219625 A CN103219625 A CN 103219625A
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Abstract
The invention provides an HDMI and control signal super single network cable extender. The extender comprises an emitting end and a receiving end which are mutually connected with each other through a cable. The emitting end comprises an HDMI signal receiving device, a Linx-Net protocol coding device, an emitting end power supply device and an emitting end center control device. The receiving end comprises an HDMI signal emitting device, a Linx-Net protocol decoding device, a receiving end power supply device and a receiving end center control device. The HDMI signal receiving device is connected with the Linx-Net protocol coding device. The emitting end power supply device is respectively connected with the HDMI signal receiving device, the Linx-Net protocol coding device and the emitting end center control device. The emitting end center control device is respectively connected with the HDMI signal receiving device and the Linx-Net protocol coding device. The HDMI signal emitting device is connected with the Linx-Net protocol decoding device. The HDMI signal network cable extender can meet requirements of users for long-distance HDMI transmission.
Description
Technical field
The present invention relates to the prolongation technical field of HD video, particularly relate to the super single netting twine extender of a kind of HDMI and control signal.
Background technology
HDMI is as a kind of emerging digital audio/video interface, the present occurred from 2002, obtained the approval in market, now high definition DVD, HDTV (High-Definition Television) etc. all have been equipped with the HDMI interface, and the HDMI interface of saying that can affirm has become the main flow of current video interface.Yet, HDMI is owing to transmission is the high-definition video signal that does not have compression, its bandwidth is very high, the HDMI signal bandwidth of 1080p resolution and 60hz refresh rate has just reached 5Gbps, high bandwidth is the high definition display effect perfectly, but limited the transmission range of HDMI signal simultaneously again greatly, generally speaking, used common HDMI cable can only transmit about 7 meters.And in real applied environment, often need the HDMI signal is prolonged tens meters even rice up to a hundred, HDMI signal extender is this series products just, by HDMI signal extender, the HDMI signal can be prolonged certain distance, common on the market HDMI signal extender roughly has three kinds, a kind of is to add balanced chip in the HDMI client cables, the general distance that prolongs is about 40 meters, a kind of is that the HDMI conversion of signals is prolonged for the netting twine signal, the general distance that prolongs is about 50 meters, and also having a kind of is that the HDMI conversion of signals is become fiber-optic signal, and the general distance that prolongs is about 500 meters.
The HDMI extender of market has the HDMI of use cable to add balanced chip at present, and HDMI changes netting twine, and what three kinds of optical fiber of HDMI commentaries on classics were the most close with the present invention is the HDMI extender that HDMI changes netting twine.Thisly be made up of transmitting terminal and receiving terminal two parts by the HDMI extender that the HDMI conversion of signals is become the netting twine signal, wherein transmitting terminal becomes the netting twine signal with the HDMI conversion of signals, and receiving terminal is with netting twine signal reduction becoming HDMI signal.Transmission medium uses two netting twines, requires to use CAT5E and CAT6 netting twine, and the quality of netting twine can have very big influence to the distance of prolongation and the effect of prolongation, in general just can reach 50 meters prolongation distance under the best netting twine situation of use.This HDMI netting twine extender can only transmit the HDMI signal.
Existing HDMI signal netting twine extender need use two netting twines to carry out the prolongation of HDMI signal, in concrete construction wiring, can increase cost, but also can increase the fault point; Existing HDMI signal netting twine extender can only prolong 50 meters with the HDMI signal, and be to use under the best netting twine situation, and have the Video Applications place of scale slightly at some, 50 meters can not be satisfied on-the-spot demand, and on the engineering, they generally can not remove to buy best netting twine, thereby the prolongation distance of HDMI signal is had a greatly reduced quality, and do not satisfy the original intention of design; Existing HDMI signal netting twine extender can only transmit the HDMI signal, and in application, need transmit number control signal toward contact, for example RS232 signal and usb signal, if use existing HDMI signal netting twine extender, also need for these control signals design transmission link separately, can increase the fault point of cost and increase system equally.
In a word, present HDMI signal netting twine extender can't satisfy the transmission of HDMI of user's long distance.
Thereby need the urgent technical problem that solves of those skilled in the art to be exactly at present: how to find a kind of novel HDMI signal netting twine extender, this HDMI signal netting twine extender can satisfy the transmission of HDMI of user's long distance.
Summary of the invention
A technical problem to be solved by this invention provides super single netting twine extender of a kind of HDMI and control signal, and this HDMI signal netting twine extender can satisfy the transmission of HDMI of user's long distance.
In order to address the above problem, the invention discloses super single netting twine extender of a kind of HDMI and control signal, comprise by interconnective transmitting terminal of cable and receiving terminal; Described transmitting terminal comprises HDMI signal receiving device, Linx-Net protocol code device, transmitting terminal supply unit and transmitting terminal central control unit; Described receiving terminal comprises HDMI sender unit, Linx-Net protocol-decoding device, receiving terminal supply unit and receiving terminal central control unit; Described HDMI signal receiving device is connected with Linx-Net protocol code device; Described transmitting terminal supply unit is connected with the transmitting terminal central control unit with HDMI signal receiving device, Linx-Net protocol code device respectively; Described transmitting terminal central control unit is connected with Linx-Net protocol code device with the HDMI signal receiving device respectively; Described HDMI sender unit is connected with Linx-Net protocol-decoding device; Described receiving terminal supply unit is connected with the receiving terminal central control unit with HDMI sender unit, Linx-Net protocol-decoding device respectively; Described receiving terminal central control unit is connected with Linx-Net protocol-decoding device with the HDMI sender unit respectively.
Preferably, the chip that described HDMI signal receiving device is adopted comprises the SII9135 chip, and described SII9135 chip is supported HDMI1.3 agreement and HDCP agreement.
Preferably, described SII9135 chip can be decoded into the TTL signal with the vision signal of the HDMI signal that receives; Described SII9135 chip can become the I2S audio signal with the audio signal decoding of the HDMI signal that receives.
Preferably, Linx-Net protocol code device adopts fpga chip; Described fpga chip can obtain the Linx-Net protocol signal with described TTL signal and I2S coding audio signal.
Preferably, described Linx-Net protocol signal can prolong transmission by single netting twine.
Preferably, the distance range of single netting twine prolongation transmission is a 0-180 rice.
Preferably, Linx-Net protocol-decoding device adopts fpga chip; Described fpga chip can be decoded described Linx-Net protocol signal, obtains TTL signal and I2S audio signal.
Preferably, the chip that described HDMI sender unit is adopted comprises the SII9134 chip, and described SII9134 chip is supported HDMI1.3 agreement and HDCP agreement.
Preferably, TTL signal and I2S coding audio signal that described SII9134 chip can be obtained decoding obtain the HDMI signal.
Preferably, also comprise:
Control signal comprises RS232 and usb signal; Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol code device and carry out signal encoding, with described TTL signal and I2S coding audio signal, obtain the Linx-Net protocol signal; Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol-decoding device and decode, and described Linx-Net protocol signal is decoded, and obtain TTL signal and I2S audio signal.
Compared with prior art, the present invention has the following advantages:
1, extender of the present invention adopts the Linx-Net agreement, can be with audio frequency and video and control signal lossless encoding/decoding, thereby realize the prolongation of HDMI signal, compare with existing HDMI signal netting twine extender, extender of the present invention only need use single netting twine to transmit, the fault point that can save wiring cost and reduce system.
2, extender of the present invention supports 180 meters HDMI to prolong, and netting twine is not had specific (special) requirements, and common CAT5 gets final product.
3, extender of the present invention is not only supported the prolongation of HDMI signal, prolongs when also supporting RS232 signal and usb signal simultaneously, does not need also can reduce the fault point of system when reducing cost for these control signals design independent transmission link again.
The transmission of the HDMI of the long distance that provides a kind of novel HDMI signal netting twine extender, this HDMI signal netting twine extender can satisfy the user is provided in a word.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in below embodiment being described, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of HDMI of the present invention and the super single netting twine extender embodiment 1 of control signal;
Wherein, 1, HDMI signal receiving device 2, Linx-Net protocol code device; 3, transmitting terminal supply unit; 4, transmitting terminal 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 the structural representation of a kind of HDMI of the present invention and the super single netting twine extender embodiment 2 of control signal;
Fig. 3 is the flow chart of steps of the mode of operation of transmitting terminal among the present invention;
Fig. 4 is the flow chart of steps of the mode of operation of receiving terminal among the present invention.
Embodiment
The embodiment of the invention provides super single netting twine extender of a kind of HDMI and control signal, and this HDMI signal netting twine extender can satisfy the transmission of HDMI of user's long distance.
For make goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, but not whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
One of core concept of the present invention has provided a kind of HDMI and the super single netting twine extender of control signal, comprises by interconnective transmitting terminal of cable and receiving terminal; Described transmitting terminal comprises HDMI signal receiving device, Linx-Net protocol code device, transmitting terminal supply unit and transmitting terminal central control unit; Described receiving terminal comprises HDMI sender unit, Linx-Net protocol-decoding device, receiving terminal supply unit and receiving terminal central control unit; Described HDMI signal receiving device is connected with Linx-Net protocol code device; Described transmitting terminal supply unit is connected with the transmitting terminal central control unit with HDMI signal receiving device, Linx-Net protocol code device respectively; Described transmitting terminal central control unit is connected with Linx-Net protocol code device with the HDMI signal receiving device respectively; Described HDMI sender unit is connected with Linx-Net protocol-decoding device; Described receiving terminal supply unit is connected with the receiving terminal central control unit with HDMI sender unit, Linx-Net protocol-decoding device respectively; Described receiving terminal central control unit is connected with Linx-Net protocol-decoding device with the HDMI sender unit respectively; This HDMI signal netting twine extender can satisfy the transmission of HDMI of user's long distance.
In order to make those of ordinary skills understand the present invention better, introduce the technical term among the present invention below, specific as follows described:
HDMI:HDMI refers to HDMI (High Definition Multimedia Interface), it is a kind of digitized video/audio interface technology of releasing by the common HDMI high-definition media interface interface organization of setting up of 7 companies such as Hitachi, Panasonic, Philip, Silicon Image, Sony, Thomson, Toshiba in 2002, it is the tailored version digital interface that is fit to the image transmission, it can transmit audio frequency and video-audio signal simultaneously, and the maximum data transmission speed can reach 1080p resolution and 60hz refresh rate for the 5Gbps definition.
Linx-Net: high-definition multimedia signal codec algorithm protocol, can carry out lossless encoding/decoding to the high-definition multimedia signal.
HDCP: high-bandwidth content protection agreement is mainly used in HDMI (High Definition Multimedia Interface).
FPGA: field programmable gate array.
TTL: transistor logic level signal.
I2S: the bus standard of audio data transmission between the digital audio-frequency apparatus.
With reference to Fig. 1, show the structural representation of the super single netting twine extender embodiment 1 of a kind of HDMI and control signal, specifically can comprise:
The super single netting twine extender of a kind of HDMI and control signal comprises by interconnective transmitting terminal 9 of cable and receiving terminal 10; Described transmitting terminal 9 comprises HDMI signal receiving device 1, Linx-Net protocol code device 2, transmitting terminal supply unit 3 and transmitting terminal central control unit 4; Described receiving terminal 10 comprises HDMI sender unit 6, Linx-Net protocol-decoding device 57, receiving terminal supply unit and receiving terminal central control unit 8; Described HDMI signal receiving device 1 is connected with Linx-Net protocol code device 2; Described transmitting terminal supply unit 3 is connected with transmitting terminal central control unit 3 with HDMI signal receiving device 1, Linx-Net protocol code device 2 respectively; Described transmitting terminal central control unit 4 is connected with Linx-Net protocol code device 2 with HDMI signal receiving device 1 respectively; Described HDMI sender unit 6 is connected with Linx-Net protocol-decoding device 5; 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 and connects; Described receiving terminal central control unit 8 is connected with Linx-Net protocol-decoding device 5 with HDMI sender unit 6 respectively.The chip that described HDMI signal receiving device 1 is adopted comprises the SII9135 chip, and described SII9135 chip is supported HDMI1.3 agreement and HDCP agreement.Described SII9135 chip can be decoded into the TTL signal with the vision signal of the HDMI signal that receives; Described SII9135 chip can become the I2S audio signal with the audio signal decoding of the HDMI signal that receives.Linx-Net protocol code device 2 adopts fpga chip; Described fpga chip can obtain the Linx-Net protocol signal with described TTL signal and I2S coding audio signal.Described Linx-Net protocol signal can prolong transmission by single netting twine.The distance range that single netting twine prolongs transmission is a 0-180 rice.Linx-Net protocol-decoding device 6 adopts fpga chip; Described fpga chip can be decoded described Linx-Net protocol signal, obtains TTL signal and I2S audio signal.The chip that described HDMI sender unit 5 is adopted comprises the SII9134 chip, and described SII9134 chip is supported HDMI1.3 agreement and HDCP agreement.TTL signal and I2S coding audio signal that described SII9134 chip can be obtained decoding obtain the HDMI signal.Control signal comprises RS232 signal and usb signal; Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol code device 2 and carry out signal encoding, with described TTL signal and I2S coding audio signal, obtain the Linx-Net protocol signal; Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol-decoding device 6 and decode, and described Linx-Net protocol signal is decoded, and obtain TTL signal and I2S audio signal.
Below by specific embodiment and accompanying drawing, technical scheme of the present invention is further detailed.
With reference to Fig. 2, show the structural representation of the super single netting twine extender embodiment 2 of a kind of HDMI and control signal, specifically can comprise:
In Fig. 2, video source is connected to the HDMI interface as video-out port, and generally, video source is a DVD player, HD DVD player, blue-ray DVD player, CATV set-top-box, satellite television set-top box or computer.The output port of video source and the input port of transmitting terminal of the present invention are equipped with suitable cable.Generally, suitable cable is a HDMI cable, USB cable, RS232 cable.
Transmitting terminal among the present invention can be converted into single netting twine signal with digital video signal and control signal, and receiving terminal then becomes digital video signal and control signal with single netting twine signal reduction among the present invention.Transmitting terminal is connected by single netting twine with receiving terminal, and its distance can reach 180 meters.
The output port of receiving terminal of the present invention is connected by suitable cable with the input of display electricity mouth, and generally, cable is a HDMI cable, USB cable and RS232 cable.
Display is the content for display application, as video.Generally, display is a high definition TV, comprises LCD TV, plasm TV, and the DLP TV, perhaps computer monitor comprises LCD and other flat-panel monitors, also comprises the projecting apparatus and the projector of high definition simultaneously.
With reference to Fig. 3, show the flow chart of steps of the mode of operation of transmitting terminal among the present invention.
From Fig. 3, the step of the mode of operation of transmitting terminal among the present invention as can be seen, specific as follows described:
1) the HDMI signal receive section of transmitting terminal adopts the Silicon Image SII9135 of company chip;
Wherein, the SII9135 of Silicon Image company chip is supported the HDMI1.3a agreement.
2) the SII9135 chip is the TTL signal of video section decoding the becoming 36bit of the HDMI signal that receives, the audio-frequency unit decoding of the HDMI signal that receives can also be become the I2S audio signal simultaneously,
Wherein, the SII9135 chip can also be supported the HDCP agreement.
3) the fpga chip Linx-Net protocol signal that TTL signal and the I2S audio-frequency signal coding of 36bit can be become standard, thus prolong by single netting twine;
Wherein, the Linx-Net protocol code partly adopts the fpga chip that those of ordinary skills use always.
4) control signal RS232 and usb signal carry out encoding and decoding inside being directly inputted to fpga chip, thus the purpose that realization and HDMI prolong together.
With reference to Fig. 4, show the flow chart of steps of the mode of operation of receiving terminal among the present invention.
From Fig. 4, the step of the mode of operation of receiving terminal among the present invention as can be seen, specific as follows described:
1) receiving terminal at first becomes the Linx-Net signal decoding by fpga chip the TTL signal and the I2S audio signal of standard;
Wherein, the Linx-Net protocol code partly adopts the fpga chip that those of ordinary skills use always.
2) the SII9134 chip becomes the HDMI signal with TTL signal and I2S audio-frequency signal coding;
What wherein, the SII9134 chip adopted is the SII9134 chip of Silicon Image company.
3) control signal RS232 and usb signal carry out encoding and decoding inside being directly inputted to fpga chip, thus the purpose that realization and HDMI signal prolong together.
Super single netting twine extender of a kind of HDMI provided by the present invention and control signal can realize that single netting twine prolongs HDMI and signal controlling; Prolong distance and can reach 180 meters; Reduce cost; Reduce the fault point.
In a word, the invention provides super single netting twine extender of a kind of HDMI and control signal, this HDMI signal netting twine extender can satisfy the transmission of HDMI of user's long distance.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For system embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
More than super single netting twine extender of a kind of HDMI provided by the present invention and control signal is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. HDMI and the super single netting twine extender of control signal is characterized in that, comprise by interconnective transmitting terminal of cable and receiving terminal; Described transmitting terminal comprises HDMI signal receiving device, Linx-Net protocol code device, transmitting terminal supply unit and transmitting terminal central control unit; Described receiving terminal comprises HDMI sender unit, Linx-Net protocol-decoding device, receiving terminal supply unit and receiving terminal central control unit; Described HDMI signal receiving device is connected with Linx-Net protocol code device; Described transmitting terminal supply unit is connected with the transmitting terminal central control unit with HDMI signal receiving device, Linx-Net protocol code device respectively; Described transmitting terminal central control unit is connected with Linx-Net protocol code device with the HDMI signal receiving device respectively; Described HDMI sender unit is connected with Linx-Net protocol-decoding device; Described receiving terminal supply unit is connected with the receiving terminal central control unit with HDMI sender unit, Linx-Net protocol-decoding device respectively; Described receiving terminal central control unit is connected with Linx-Net protocol-decoding device with the HDMI sender unit respectively.
2. the super single netting twine extender of HDMI according to claim 1 and control signal is characterized in that:
The chip that described HDMI signal receiving device is adopted comprises the SII9135 chip, and described SII9135 chip is supported HDMI1.3 agreement and HDCP agreement.
3. the super single netting twine extender of HDMI according to claim 2 and control signal is characterized in that:
Described SII9135 chip can be decoded into the TTL signal with the vision signal of the HDMI signal that receives; Described SII9135 chip can become the I2S audio signal with the audio signal decoding of the HDMI signal that receives.
4. the super single netting twine extender of HDMI according to claim 1 and control signal is characterized in that:
Linx-Net protocol code device adopts fpga chip; Described fpga chip can obtain the Linx-Net protocol signal with described TTL signal and I2S coding audio signal.
5. the super single netting twine extender of HDMI according to claim 4 and control signal is characterized in that:
Described Linx-Net protocol signal can prolong transmission by single netting twine.
6. the super single netting twine extender of HDMI according to claim 5 and control signal is characterized in that:
The distance range that single netting twine prolongs transmission is a 0-180 rice.
7. the super single netting twine extender of HDMI according to claim 1 and control signal is characterized in that:
Linx-Net protocol-decoding device adopts fpga chip; Described fpga chip can be decoded described Linx-Net protocol signal, obtains TTL signal and I2S audio signal.
8. the super single netting twine extender of HDMI according to claim 1 and control signal is characterized in that:
The chip that described HDMI sender unit is adopted comprises the SII9134 chip, and described SH9134 chip is supported HDMI1.3 agreement and HDCP agreement.
9. the super single netting twine extender of HDMI according to claim 8 and control signal is characterized in that:
TTL signal and I2S coding audio signal that described SII9134 chip can be obtained decoding obtain the HDMI signal.
10. the super single netting twine extender of HDMI according to claim 1 and control signal is characterized in that, also comprises:
Control signal comprises RS232 and usb signal; Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol code device and carry out signal encoding, with described TTL signal and I2S coding audio signal, obtain the Linx-Net protocol signal; Described RS232 signal and usb signal are input in the fpga chip of Linx-Net protocol-decoding device and decode, and described Linx-Net protocol signal is decoded, and obtain 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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| 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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| CN103219625B (en) | 2016-12-14 |
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