CN218450223U - High-definition audio and video signal extender of 4K super high voltage - Google Patents
High-definition audio and video signal extender of 4K super high voltage Download PDFInfo
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- CN218450223U CN218450223U CN202222871229.5U CN202222871229U CN218450223U CN 218450223 U CN218450223 U CN 218450223U CN 202222871229 U CN202222871229 U CN 202222871229U CN 218450223 U CN218450223 U CN 218450223U
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Abstract
The utility model provides a 4K ultra high definition audio frequency and video signal extender, by twisted pair line connection pairing's sending terminal and receiving terminal constitute, its characterized in that includes: the transmitting end comprises an HDMI input interface, an HDMI loop output interface, a first infrared module, a first signal processor, a first DC power supply and an RJ45 output interface, wherein the first signal processor is connected with the HDMI input interface, the first infrared module, the first DC power supply and the RJ45 output interface; the receiving end comprises an HDMI output interface, an SPDIF interface, a second infrared module, a second DC power supply, a second signal processor and an RJ45 input interface, wherein the second signal processor is connected with the HDMI output interface, the first infrared module and the RJ45 input interface; the utility model discloses can utilize the transmission extender of the clear HDMI video signal of twisted-pair line transmission superelevation, digital audio signal and infrared remote control signal, realize the good compatibility to different broadcast audio equipment, satisfy user's demand.
Description
Technical Field
The utility model relates to an audio and video transmission technical field especially relates to a clear audio and video signal extender of 4K superelevation.
Background
With the rapid development of electronic technology, interfaces such as HDMI/DVI have become standard interfaces in the field of high-definition audio and video. HDMI has been developed to version 2.0 at transmission rates up to 18Gbps. The HDMI/DVI is differential signal transmission, and the quality requirement on wires is higher and higher. The transmission distance of the 1080P signal which is mature at present is usually limited to be within 15 meters. If the transmission is carried out at a longer distance, the relay amplifier can be added in the middle of the wire, and the length can be prolonged to be more than 30 meters.
After the HDMI/DVI signal is transmitted in a long distance, the quality of the signal is rapidly reduced due to factors such as delay, jitter and noise interference, and even the signal cannot be normally transmitted. Even if the relay amplifier is added in the middle, the distance can only be extended to about 30 meters, and the occasions with longer distance requirements such as squares, halls, stations and the like can not be met. In addition, the HDMI/DVI cable is expensive, and the cost is greatly increased after the addition of the intermediate device, which is not acceptable to the ordinary consumers. Secondly, along with the increase of signal source and terminal distance, the signal can attenuate by a wide margin when transmitting, and the defect of current various signal enhancement equipment is: a plurality of transmission lines are needed, the types of signals capable of being transmitted are single, and remote control cannot be realized at a terminal; the market is urgently in need of a transmission extender capable of transmitting ultra-high definition HDMI video signals, digital audio signals and infrared remote control signals by using twisted pair lines.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a clear audio and video signal extender of 4K superelevation can effectively prolong the transmission distance of HDMI high definition signal, and in the video signal of output, the audio signal among the selective output high definition audio and video signal satisfies the higher user demand of audio requirement.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
the utility model provides a high-definition audio and video signal extender of 4K which characterized in that comprises transmitting terminal and the receiving terminal that the twisted pair line connection was mated which characterized in that includes:
the transmitting end comprises an HDMI input interface, an HDMI loop output interface, a first infrared module, a first signal processor, a first DC power supply and an RJ45 output interface; the receiving end comprises an HDMI output interface, a second infrared module, a second DC power supply, a second signal processor and an RJ45 input interface,
in the transmitting end, a first signal processor is connected with an HDMI input interface, an HDMI loop output interface, a first infrared module, a first DC power supply and an RJ45 output interface; in the receiving end, the second signal processor is connected with the HDMI output interface, the first infrared module and the RJ45 input interface; the twisted pair is connected with an RJ45 output interface of the sending end and an RJ45 input interface of the receiving end;
the receiving end is also provided with an audio frequency switch and an SPDIF interface, and the second signal processor is respectively connected with the audio frequency switch and the SPDIF interface and used for outputting one of the two paths of digital audio signals through the SPDIF interface.
The receiving end further comprises an audio frequency switch, and the audio frequency switch is connected with the second signal processor and used for switching and outputting one of the two paths of digital audio signals to external audio equipment.
The two paths of digital audio signals are SPDIF audio signals and ARC audio signals.
Wherein the SPDIF interface supports output LPCM, DTS-Audio, dolby Digtial5.1CH Audio formats.
The first infrared module comprises a first infrared input interface and a first infrared output interface respectively; the first infrared input interface and the first infrared output interface are respectively connected with a control pin of the first signal processor.
The second infrared module comprises a second infrared input interface and a second infrared output interface respectively; the second infrared input interface and the second infrared output interface are respectively connected with a control pin of the second signal processor.
The twisted pair adopts a single Cat6/6A/Cat7 network cable to transmit ultra-high definition HDMI video signals, digital audio signals and infrared remote control signals.
The utility model discloses a high definition audio and video signal extender can reach following beneficial effect:
the scheme can be used for bidirectional infrared control of remote and local equipment, and is convenient for a user to quickly control each equipment of a signal source end and a display end, the receiving end can separate an audio part in an HDMI signal of the output end and further process the separated audio, so that the different playing audio equipment is well compatible, the requirements of the user are met, and the scheme can be widely applied to various television studios, advertisements, conference systems, traffic guidance, server rooms, industrial monitoring and control, home cinemas and other places.
Drawings
Fig. 1 is a block diagram of an audio/video signal extender according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.
As shown in fig. 1, the utility model provides a clear audio and video signal extender of 4K superelevation comprises paired sending terminal and receiving terminal to the twisted pair line connection, a serial communication port, include:
the transmitting end comprises an HDMI input interface 11 for receiving equipment data, an RJ45 output interface 13 for outputting audio and video data, a first signal processor 10 respectively connected with the HDMI input interface 11, the HDMI loop-out interface 14 and the first infrared module 12, and a first DC power supply respectively supplied with power by the HDMI input interface 11, the first infrared module 12, the first signal processor 10, the HDMI loop-out interface 14 and the RJ45 output interface 13;
the receiving end comprises an HDMI output interface 19, a second infrared module 17, a second signal processor 20 and an RJ45 input interface 18, and the HDMI output interface 19, the second infrared module 17 and the RJ45 input interface 18 are respectively connected with the second signal processor 20; the device also comprises a second DC power supply which is respectively connected with the HDMI output interface 19, the second infrared module 17, the second signal processor 20 and the RJ45 input interface 18, wherein the twisted pair is connected with the RJ45 output interface 13 of the transmitting end and the RJ45 input interface 18 of the receiving end; the HDMI ring-out interface 14 transfers the video signal to the local device.
The receiving end comprises an RJ45 input interface 18 for receiving audio and video data of the transmitting end, an HDMI output interface 19, a second signal processor 20 which is respectively connected with the HDMI output interface 19 and is mutually connected, an RJ45 input interface 18 and a second infrared module 17 which are respectively connected with the second signal processor 20, and a second DC power supply which is respectively connected with the second signal processor 20 and the HDMI output interface 19;
the receiving end is further provided with an audio switch 15 and an SPDIF interface 16, and the second signal processor 20 is connected with the audio switch 15 and the SPDIF interface 16 respectively, and is used for outputting one of the two paths of digital audio signals through the SPDIF interface 16.
The first embodiment is as follows: the first infrared module 12 comprises an infrared input interface and an infrared output interface respectively; the first infrared input interface and the infrared output interface are respectively connected with a control pin of the first signal processor 10, and the second infrared module 17 respectively comprises an infrared input interface and an infrared output interface; the infrared input interface and the second infrared output interface are respectively connected with a control pin of the second signal processor 20.
When the sending end and the receiving end transmit audio and video data, the infrared input interface and the infrared input interface can simultaneously receive infrared waveforms, once the infrared waveforms are detected, the infrared input interface can transmit the infrared waveforms to the first signal processor 10, and the infrared input interface can transmit the infrared waveforms to the second signal processor 20; the first signal processor 10 and the second signal processor 20 re-encode the infrared original waveform into a data stream after filtering processing, and then transmit the compressed data to a device at the other end through the RJ45 output interface 13 and the RJ45 input interface 18 after a specific compression algorithm. After detecting the transmitted data, the other end device firstly decompresses and restores the data, then decodes the data again, processes and restores the original infrared waveform through the first signal processor 10 and the second signal processor 20, transmits the infrared waveform through the infrared output interface and the infrared output interface, and transmits the infrared original waveform through coding, compressing, decompressing and decoding, so that the infrared remote control device can be perfectly compatible with all infrared protocols, does not need to consider various different infrared coding and decoding conditions, and realizes remote bidirectional infrared remote control over obstacles.
Example two:
in the embodiment, the signal source is connected with the HDMI input interface 11 of the transmitting end and the display device is connected with the HDMI output interface 19 of the receiving end by using HDMI cables; if the transmitter uses HDMI ring-out, the display can be connected to the HDMI ring-out interface 14 of the transmitter;
the first signal processor 10 and the second signal processor 20 each include a video processing module and an audio processing module, and output video signals to the display device through the HDMI cable, and output digital audio signals to the external audio playing device through the SPDIF interface 19.
The utility model discloses an in an embodiment, still include audio frequency change over switch 15, audio frequency change over switch 15 links to each other with second signal processor 20, when needs audio output to switch over, can switch to different modes.
When the SPDIF audio needs to be output, the second signal processor 21 receives the HDMI signal output by the transmitting end, and the second signal processor 21 encodes the HDMI signal and outputs the encoded HDMI signal to the external audio device through the SPDIF interface 16.
When the audio switch of the receiver is switched to the ARC audio mode, the second signal processor 21 receives the ARC signal returned by the HDMI output interface 25, and the second signal processor 21 encodes the ARC signal and outputs the encoded ARC signal to the external audio device through the HDMI input interface.
In the ARC audio mode, the ARC can ensure forward compatibility between audio devices (such as echo wall, audio/video receiver (AVR), television set), support the HDMI cable to provide a dedicated audio link, and improve compatibility, convenience, and audio performance. The special control signals of the sending end and the receiving end also transmit mouth shape synchronous information, and the audio and the video can be ensured to be seamlessly cooperated in the home theater and keep consistent. The user can easily and freely operate the audio through the software interface. The method is favorable for improving the overall compatibility of the product and widening the use scene of the product.
After adopting the above structure, the user pulls the audio switch 15, the external display device passes through the ARC audio signal returned by the HDMI output interface 19, and the audio switch 15 analyzes the ARC audio from the HDMI output interface 19 and outputs the ARC audio through the SPDIF interface 16.
The other path of digital audio signal separated by the second signal processor 20 can be directly converted into an optical fiber audio signal through the digital audio output unit and output to the sound box device through the SPDIF interface 16.
It should be noted that, as described above, the present solution supports ARC (audio return channel) reception or transmission, that is, when the receiving end is connected to a high-definition display device such as a television, if video data stored in the receiving end is played through the high-definition display device, the receiving end may receive an ARC audio signal returned by the high-definition display device through the HDMI output interface, and the second signal processor 20 analyzes the audio signal and outputs the audio signal to an external audio device through the SPDIF interface 16.
The SPDIF interface 16 supports Audio formats including LPCM, DTS-Audio, and Dolby digital Audio 5.1ch.
In summary, in the present application, the first infrared module 12 and the second infrared module 17 capable of bidirectionally transmitting the infrared control signal between the transmitting end and the receiving end are respectively disposed on the transmitting end and the receiving end, so that the user can remotely access a plurality of commonly used functional ports of the computer through the receiving end, the apparatus further includes an SPDIF interface 16 and an audio switch 15, so as to realize the bidirectional transmission of the infrared control signal, the digital audio signal and the ARC audio, and the user can conveniently access the apparatus directly on the computer host when remotely accessing the computer, thereby greatly improving the use experience, and being widely applicable to outdoor advertising, video editing, remote monitoring systems, home theater entertainment and teleconferencing.
The twisted pair adopts a single Cat6/6A/Cat7 network cable to transmit full high-definition HDMI audio/video signals and infrared remote control signals; the twisted pair adopts a self-defined protocol to transmit through a local area network, the standard of HDMI2.0 and the standard of HDCP2.2 are met, and the maximum transmission distance can reach 70 meters.
The twisted pair signal extender supports all standard video resolutions from 640x480 to 4K; the control signal feedback is supported, the second signal processor 20 with audio switching output can be directly operated on the sending end at the receiving end through infrared remote control, and the main functions are as follows: the resolution maximum supports 4kx2k @ 60hz4; 4K farthest transmission distance 230ft (70 meters), 1080P farthest transmission distance 328ft (70 meters); the audio switching is supported, one SPDIF audio output and one ARC audio output are supported, and the 20-60KHZ infrared return function is supported.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims. The above description is given for the exemplary application of the present invention with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above method, as long as the present invention adopts various improvements of the method concept and the technical solution, or the present invention is directly applied to other occasions without improvement, and all of them are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a high-definition audio and video signal extender of 4K which characterized in that comprises transmitting terminal and the receiving terminal that the twisted pair line connection was mated which characterized in that includes:
the transmitting end comprises an HDMI input interface, an HDMI loop output interface, a first infrared module, a first signal processor, a first DC power supply and an RJ45 output interface; the receiving end comprises an HDMI output interface, a second infrared module, a second DC power supply, a second signal processor and an RJ45 input interface,
in the transmitting end, a first signal processor is connected with an HDMI input interface, an HDMI loop output interface, a first infrared module, a first DC power supply and an RJ45 output interface; in the receiving end, the second signal processor is connected with the HDMI output interface, the first infrared module and the RJ45 input interface; the twisted pair is connected with an RJ45 output interface of the transmitting end and an RJ45 input interface of the receiving end;
the receiving end is also provided with an audio frequency switch and an SPDIF interface, and the second signal processor is respectively connected with the audio frequency switch and the SPDIF interface and used for outputting one of the two paths of digital audio signals through the SPDIF interface.
2. The extender of 4K ultra high definition audio/video signals according to claim 1, wherein the receiving end further includes an audio switch, and the audio switch is connected to the second signal processor and is configured to switch and output one of the two paths of digital audio signals to an external audio device.
3. The 4K ultra-high-definition audio/video signal extender of claim 2, wherein the two paths of digital audio signals are SPDIF audio signals and ARC audio signals.
4. The 4K ultra high definition Audio video signal extender of claim 1, wherein the SPDIF interface supports output LPCM, DTS-Audio, dolby digtial5.1ch Audio formats.
5. The 4K ultra-high-definition audio/video signal extender of claim 1, wherein the first infrared module comprises a first infrared input interface and a first infrared output interface, respectively; the first infrared input interface and the first infrared output interface are respectively connected with a control pin of the first signal processor.
6. The 4K ultra-high-definition audio/video signal extender of claim 1, wherein the second infrared module comprises a second infrared input interface and a second infrared output interface, respectively; the second infrared input interface and the second infrared output interface are respectively connected with a control pin of the second signal processor.
7. The extender of 4K ultra high definition audio/video signals according to claim 1, wherein the twisted pair cable uses a single Cat6/6A/Cat7 network cable to transmit ultra high definition HDMI video signals, digital audio signals and infrared remote control signals.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222871229.5U CN218450223U (en) | 2022-10-28 | 2022-10-28 | High-definition audio and video signal extender of 4K super high voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222871229.5U CN218450223U (en) | 2022-10-28 | 2022-10-28 | High-definition audio and video signal extender of 4K super high voltage |
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| Publication Number | Publication Date |
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| CN218450223U true CN218450223U (en) | 2023-02-03 |
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| CN202222871229.5U Active CN218450223U (en) | 2022-10-28 | 2022-10-28 | High-definition audio and video signal extender of 4K super high voltage |
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