CN112866615A - 8K ultra-high-definition video extender based on network cable extension - Google Patents
8K ultra-high-definition video extender based on network cable extension Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
Abstract
The invention discloses an 8K ultra-high definition video extender based on network cable extension, which comprises a transmitter and a receiver, wherein the transmitter comprises a video input interface, a first audio and video processing chip and a plurality of HDBaseT transmitting modules, the receiver comprises a video output interface, a second audio and video processing chip and a plurality of HDBaseT receiving modules, and each HDBaseT receiving module is connected with one HDBaseT transmitting module through an Ethernet network cable. The invention divides a video source with 8K @60Hz resolution into two paths of video streams with 4K @60Hz resolution through an audio and video processing chip of a transmitter, then utilizes a non-compression extension scheme and double network lines to transmit the video streams, and combines the two paths of video streams with 4K @60Hz resolution into the video source with 8K @60Hz resolution through the audio and video processing chip of a receiver, thereby realizing the remote transmission of ultra-high-definition video.
Description
Technical Field
The invention relates to the field of remote transmission of ultra-high-definition videos, in particular to an 8K ultra-high-definition video extender based on network cable extension.
Background
With the rapid development of electronic technology, the HDMI interface has become a standard interface in the field of high-definition audio and video. The application of the HDMI is developed to more than 2.1 version at present, the resolution is supported to 8K @60, and the transmission rate reaches 18 Gbps. The increase in transmission rate corresponds to a higher and higher quality requirement for the wire. The transmission distance of the output signal of the current 8K @60 equipment is usually only about 5 meters. If the transmission is carried out at a longer distance, a relay amplifier can be added in the middle of the wire, and the extension can be about 20 meters. The occasions with longer distance requirements such as individual squares, halls, stations and the like can not be met. In addition, HDMI/DVI wires are more expensive, and especially HDMI2.1 wires are less expensive. The cost will further rise after adding the intermediate equipment, and the intermediate equipment cannot be accepted by the ordinary consumers. The HDMI/DVI wire is relatively thick and stiff, and requires high wiring to prevent interference, which also leads to an increase in construction cost. In addition, the existing audio and video extension transmission product has the problems of poor human body experience such as separate power supply at the near end and the far end, solidification of a control mode and the like.
The above drawbacks are to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an 8K ultra-high-definition video extender based on network cable extension.
The technical scheme of the invention is as follows:
an 8K ultra-high definition video extender based on network cable extension comprises a transmitter and a receiver, wherein the transmitter comprises a video input interface, a first audio and video processing chip and a plurality of HDBaseT transmitting modules, the first audio and video processing chip is respectively connected with the video input interface and the plurality of HDBaseT transmitting modules,
the receiver comprises a video output interface, a second audio and video processing chip and a plurality of HDBaseT receiving modules, wherein the second audio and video processing chip is respectively connected with the video output interface and the plurality of HDBaseT receiving modules, each HDBaseT receiving module is connected with one HDBaseT transmitting module through an Ethernet cable,
the first audio and video processing chip is configured to divide a video source received by the video input interface into multiple video streams having a resolution lower than that of the video source, and transmit the video stream of each channel to the corresponding HDBaseT receiving module through one HDBaseT transmitting module, and the second audio and video processing chip is configured to combine the video streams received by the plurality of HDBaseT receiving modules into the video source and output the video source to a display device through the video output interface.
According to the invention of the above scheme, the video input interface is an HDMI video input interface, and the video output interface is an HDMI video output interface.
According to the invention of the above scheme, the receiver further comprises an audio output interface, and the audio output interface is connected with the second audio/video processing chip.
According to the invention of the above scheme, the first audio/video processing chip and the second audio/video processing chip both comprise a video processing module and an audio processing module, and the video processing module processes the video signal and the audio processing module processes the audio signal.
Further, the video processing module includes a dynamic HDR module, and the dynamic HDR module is used to readjust each scene and each frame of picture in the video signal.
Further, the video processing module includes a variable refresh rate module and a fast frame transmission module, and the variable refresh rate module synchronously outputs the refresh rate of the video signal and the fast frame transmission module transmits each frame of picture of the video signal.
Furthermore, the video processing module comprises a fast media conversion module and an automatic low-delay module, when the video format of the video source is converted by the fast media conversion module, the video source is switched to a new video source, and the picture delay of the video signal is automatically set by the automatic low-delay module.
According to the invention of the above scheme, the transmitter further comprises a network module, the network module is connected with the first audio/video processing chip, and network service is provided for the equipment through the network module.
According to the invention of the above scheme, the transmitter further includes a third party interface, the third party interface is connected with the first audio/video processing chip, and the transmitter is connected with a third party device through the third party interface.
According to the invention of the above scheme, the transmitter further comprises a first RS232 interface, a first infrared transmitting head and a first infrared receiving head, and the first RS232 interface, the first infrared transmitting head and the first infrared receiving head are all connected with the first audio and video processing chip;
the receiver further comprises a second RS232 interface, a second infrared transmitting head and a second infrared receiving head, wherein the second RS232 interface, the second infrared transmitting head and the second infrared receiving head are connected with the second audio and video processing chip.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention divides a video source with 8K @60Hz resolution into two video streams with 4K @60Hz resolution through an audio and video processing chip of a transmitter, then utilizes a non-compression extension scheme and double network lines to transmit the video streams, and combines the two video streams with 4K @60Hz resolution into a video source with 8K @60Hz resolution through an audio and video processing chip of a receiver, thereby realizing the remote transmission of ultra-high-definition video and simultaneously supporting 4K @60Hz non-compression Dolby visual field signals;
2. the invention adopts the cheap and easily-obtained CAD5/6 type Ethernet cable, thus realizing the purpose of prolonging the transmission distance of the ultra-high definition video, the prolonged distance is up to 100 meters, and the installation is simplified; the 8K/UHD video, audio, 100BaseT Ethernet and control signals can be transmitted through a single cable (Ethernet cable), and a plurality of cables among a source, a control system router and display equipment are omitted;
3. the interface of HDBaseT emission module and HDBaseT receiving module of the invention supports PoC power supply function, the emitter can supply power to the remote receiver through the Ethernet cable, the remote does not need local AC power socket, saves time and integration cost, meanwhile, the emitter is provided with a power supply switch, controls the power supply to the remote receiver through the power supply switch, saves the power consumption of the local machine;
4. the extender of the invention also comprises professional audio and video characteristics, such as analog audio embedding and audio de-embedding, so that the extender can meet a series of audio and video switching and processing requirements frequently encountered in classrooms, meeting rooms, board meeting rooms, training classrooms and other lecture occasions.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a transmitter according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of a receiver according to an embodiment of the present invention.
In the context of the figures, it is,
1. a transmitter; 101. an HDMI video input interface; 102. a first audio and video processing chip; 103. an HDBaseT transmitting module; 104. a network module; 105. a third party interface; 106. a first RS232 interface; 107. a first infrared emission head; 108. a first infrared receiving head; 109. a first upgrade interface;
2. a receiver; 201. a DMI video output interface; 202. a second audio and video processing chip; 203. an HDBaseT receiving module; 204. an audio output interface; 205. a second RS232 interface; 206. a second infrared emission head; 207. a second infrared receiving head; 208. a second upgrade interface; 209. a dial-up module;
3. a video source;
4. a display device.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that the term "connected" and other terms are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 1 to 3, an embodiment of the present invention provides an 8K ultra high definition video extender based on network cable extension, which includes a transmitter 1 and a receiver 2. The transmitter 1 includes an HDMI video input interface 101, a first audio/video processing chip 102, and two HDBaseT transmission modules 103, where the first audio/video processing chip 102 is connected to the HDMI video input interface 101 and the two HDBaseT transmission modules 103, respectively. The receiver 2 includes an HDMI video output interface 201, a second audio/video processing chip 202, and two HDBaseT receiving modules 203, the second audio/video processing chip 202 is connected to the HDMI video output interface 201 and the two HDBaseT receiving modules 203, and each HDBaseT receiving module 203 is connected to one HDBaseT transmitting module 103 through an ethernet cable.
The HDMI video input interface 101 is configured to receive video source 3 with a resolution of up to 8K @60Hz 4:2:0, and has a transmission bandwidth of 48G. The HDMI video output interface 201 is configured to output a video source 3 with a resolution of up to 8K @60Hz 4:2:0, and has a transmission bandwidth of 48G. The first audio and video processing chip 102 is configured to divide the video source 3 with 8K @60Hz resolution received by the HDMI video input interface 101 into two video streams with 4K @60Hz resolution, transmit the video stream with 4K @60Hz resolution of each channel to the corresponding HDBaseT receiving module 203 through one HDBaseT transmitting module 103, where the transmission bandwidth is 18G, and the second audio and video processing chip 202 is configured to combine the video streams with 4K @60Hz resolution received by the two HDBaseT receiving modules 203 into the video source 3 with 8K @60Hz resolution and output the video source 3 to the display device 4 through the video output interface, thereby implementing remote transmission of ultra high definition video and simultaneously supporting a 4K @60Hz uncompressed dolby video interface signal.
By adopting the scheme, the invention can realize the purpose of prolonging the transmission distance of the ultra-high definition video by using the cheap and easily available CAD5/6 type Ethernet cable, the prolonged distance is up to 100 meters, and the installation is simplified; 8K/UHD video, audio, 100BaseT Ethernet and control signals can be transmitted through a single cable (Ethernet cable), and a plurality of cables among a source control system router and the display equipment 4 are omitted; the interfaces of the HDBaseT transmitting module 103 and the HDBaseT receiving module 203 support the PoC power supply function, the emitter may supply power to the receiver 2 at the far end through the ethernet cable, the far end does not need a local ac power outlet, saving time and integration cost, and the transmitter 1 is provided with a power supply switch, and saves local power consumption by controlling the power supply to the receiver 2 at the far end through the power supply switch.
The HDBaseT is an open standard, so costs associated with additional extension elements can be saved, and the HDMI output allows additional HDBaseT transmitters to be used for dual long distance applications such as recorded broadcast teaching, teleconferencing, cloud conferencing, online classroom, surgical teaching, court hearing, enterprise, and telemedicine application fields.
Referring to fig. 3, in the present embodiment, the receiver 2 further includes an audio output interface 204, and the audio output interface 204 is connected to the second audio/video processing chip 202 to implement synchronous output of audio/video signals.
In this embodiment, the first audio/video processing chip 102 and the second audio/video processing chip 202 both include a video processing module and an audio processing module, and process the video signal through the video processing module and process the audio signal through the audio processing module.
The video processing module supports HDMI2.1, supports the resolution up to 8K @60Hz 4:2:0, and supports the transmission of 4K @60Hz Dolby view signals. The video processing module comprises a dynamic HDR module, a variable refresh rate module, a fast frame transmission module, a fast media conversion module and an automatic low-delay module. The dynamic HDR module is used for readjusting each screen and each frame of picture in the video signal, so as to ensure that each screen and even each frame of the video can display ideal values of depth of field, details, brightness and contrast and wider color gamut, and can be applied to medical, industrial or professional imaging systems. The variable refresh rate module is used for synchronously outputting and refreshing the video signal, thereby reducing or even eliminating the phenomena of delay, pause and tearing of the picture. The fast frame transmission module is used for transmitting each frame of picture of the video signal at a higher speed, and the delay of the picture is greatly reduced. The fast media conversion module is used for immediately switching to a new video source 3 when the video source 3 converts the video format, so that the black picture time of a user when converting the video source 3 is reduced. The automatic low-delay module is used for automatically setting ideal picture delay of the video signal, and smooth, delay-free and uninterrupted viewing experience is realized.
The Audio processing module supports a series of operation processing such as Audio embedding, Audio de-embedding, eARC and the like, improves the signal to noise ratio, reduces the complexity of the analog pre-filter and the analog post-filter, accords with the HD Audio standard, and can be directly applied to HDCD, DVD-Audio, Blu-ray disc, digital music downloading service, digital pair media player lamp service and the like. The eARC ensures forward compatibility between audio devices (e.g., echo wall, audio/video receiver (AVR), television), supports HDMI cable to provide a dedicated audio link, and greatly improves compatibility, convenience, and audio performance. In this embodiment, the dedicated control signals for the transmitter 1 and receiver 2 also transmit lip-sync information, ensuring that the audio and video can be seamlessly coordinated and consistent in the home theater. 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.
Referring to fig. 2, in the present embodiment, the transmitter 1 further includes a network module 104 and a third-party interface 105, the network module 104 and the third-party interface 105 are both connected to the first audio/video processing chip 102, the network module 104 is used to provide network services for the device, and the network module 104 may be a wired network module 104 or a wireless network module 104 or both. The third-party interface 105 is used for connecting the transmitter 1 with a third-party device, so that the functions of the device are expanded, and the third-party device can be powered. In one embodiment, the third-party device is an IP camera, real-time high-definition monitoring is achieved through the IP camera, videos shot by the IP camera can be broadcasted to a network, and parameters of the videos can be controlled through a PC (personal computer) end of a local area network.
Referring to fig. 2 and fig. 3, in this embodiment, the transmitter 1 further includes a first RS232 interface 106, a first infrared transmitting head 107 and a first infrared receiving head 108, and the first RS232 interface 106, the first infrared transmitting head 107 and the first infrared receiving head 108 are all connected to the first audio/video processing chip 102. The first RS232 interface 106 is used for connecting devices such as a computer, so that the transmitter 1 can be remotely controlled by the computer. The first infrared transmitting head 107 and the first infrared receiving head 108 are used for connecting infrared equipment, and bidirectional infrared control is realized. The receiver 2 further includes a second RS232 interface 205, a second infrared emitter 206 and a second infrared receiver 207, and the second RS232 interface 205, the second infrared emitter 206 and the second infrared receiver 207 are all connected to the second audio/video processing chip 202. The second RS232 interface 205 is used for connecting devices such as a computer, so that the receiver 2 can be remotely controlled by the computer. The second infrared transmitting head 206 and the second infrared receiving head 207 are used for connecting infrared equipment, so that bidirectional infrared control is realized.
Through the arrangement of the transmitter 1 and the receiver 2, the infrared or RS-232 can be connected with a third-party control system, flexible control selection is provided for the compatibility of the third-party control system, the integration time and cost are reduced, and the correctness and reliability of data transmission are ensured.
Referring to fig. 2 and fig. 3, in the present embodiment, the transmitter 1 further includes a first upgrade interface 109, and the first upgrade interface 109 is connected to the first audio/video processing chip 102. The first upgrade interface 109 can upgrade the program for the encoding processing module, and the BUG or the function adjustment found in the using process can be solved by the upgrade program. Preferably, the first upgrade interface 109 is a MICRO USB upgrade interface.
The receiver 2 further includes a second upgrade interface 208, and the second upgrade interface 208 is connected to the second audio/video processing chip 202. The second upgrade interface 208 can upgrade the program for the code processing module, and the BUG or the function adjustment found in the using process can be solved by the upgrade program. Preferably, the second upgrade interface 208 is a MICRO USB upgrade interface.
Referring to fig. 3, in the present embodiment, the receiver 2 further includes a dial module 209, and the dial module 209 is connected to the second audio/video processing chip 202. The dial module 209 gives the receiver 2 EDIDs to a plurality of input sources, and realizes output of video signals of different resolutions by different EDIDs. The dial-up module 209 can be set at any time to achieve the purpose of rapidly converting the video output resolution.
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 invention is described above with reference to the accompanying drawings, which are illustrative, and it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other fields without modification.
Claims (10)
1. An 8K ultra-high definition video extender based on network cable extension is characterized by comprising a transmitter and a receiver, wherein the transmitter comprises a video input interface, a first audio and video processing chip and a plurality of HDBaseT transmitting modules, the first audio and video processing chip is respectively connected with the video input interface and the plurality of HDBaseT transmitting modules,
the receiver comprises a video output interface, a second audio and video processing chip and a plurality of HDBaseT receiving modules, wherein the second audio and video processing chip is respectively connected with the video output interface and the plurality of HDBaseT receiving modules, each HDBaseT receiving module is connected with one HDBaseT transmitting module through an Ethernet cable,
the first audio and video processing chip is configured to divide a video source received by the video input interface into multiple video streams having a resolution lower than that of the video source, and transmit the video stream of each channel to the corresponding HDBaseT receiving module through one HDBaseT transmitting module, and the second audio and video processing chip is configured to combine the video streams received by the plurality of HDBaseT receiving modules into the video source and output the video source to a display device through the video output interface.
2. The 8K ultra high definition video extender based on the network cable extension as claimed in claim 1, wherein the video input interface is an HDMI video input interface, and the video output interface is an HDMI video output interface.
3. The 8K ultra high definition video extender based on the network cable extension as claimed in claim 1, wherein the receiver further comprises an audio output interface, and the audio output interface is connected with the second audio/video processing chip.
4. The 8K ultra-high-definition video extender based on the network cable extension is characterized in that the first audio and video processing chip and the second audio and video processing chip respectively comprise a video processing module and an audio processing module, video signals are processed through the video processing module, and audio signals are processed through the audio processing module.
5. The 8K ultra high definition video extender based on the network cable extension as recited in claim 4, wherein the video processing module comprises a dynamic HDR module, and each scene and each frame picture in the video signal are readjusted through the dynamic HDR module.
6. The 8K ultra high definition video extender based on the network cable extension as recited in claim 4, wherein the video processing module comprises a variable refresh rate module and a fast frame transmission module, each frame of picture of the video signal is transmitted through the fast frame transmission module by synchronously outputting the video signal and the refresh rate of the video signal through the variable refresh rate module.
7. The 8K ultra high definition video extender based on the network cable extension as recited in claim 4, wherein the video processing module comprises a fast media conversion module and an automatic low delay module, when a video source converts a video format, the fast media conversion module switches to a new video source, and the automatic low delay module automatically sets the picture delay of the video signal.
8. The 8K ultra high definition video extender based on the network cable extension as recited in claim 1, wherein the transmitter further comprises a network module, and the network module is connected to the first audio/video processing chip and provides network services for the device through the network module.
9. The 8K ultra high definition video extender based on the network cable extension as recited in claim 1, wherein the transmitter further comprises a third party interface, the third party interface is connected with the first audio/video processing chip, and the transmitter is connected with a third party device through the third party interface.
10. The 8K ultra high definition video extender based on the network cable extension as claimed in claim 1, wherein the transmitter further comprises a first RS232 interface, a first infrared transmitting head and a first infrared receiving head, and the first RS232 interface, the first infrared transmitting head and the first infrared receiving head are all connected with the first audio and video processing chip;
the receiver further comprises a second RS232 interface, a second infrared transmitting head and a second infrared receiving head, wherein the second RS232 interface, the second infrared transmitting head and the second infrared receiving head are connected with the second audio and video processing chip.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113572915A (en) * | 2021-09-24 | 2021-10-29 | 聆笙(北京)科技有限公司 | Video signal long-distance transmission method, system, equipment and medium |
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| CN207184693U (en) * | 2017-08-04 | 2018-04-03 | 深圳市东明炬创电子有限公司 | A kind of high-definition signal long-distance transmissions device of integrated HDBaseT technologies |
| CN109729296A (en) * | 2019-01-02 | 2019-05-07 | 京东方科技集团股份有限公司 | The radio transmitting method of signal output apparatus, display equipment and HDMI signal |
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- 2021-01-07 CN CN202110018088.XA patent/CN112866615A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207184693U (en) * | 2017-08-04 | 2018-04-03 | 深圳市东明炬创电子有限公司 | A kind of high-definition signal long-distance transmissions device of integrated HDBaseT technologies |
| CN109729296A (en) * | 2019-01-02 | 2019-05-07 | 京东方科技集团股份有限公司 | The radio transmitting method of signal output apparatus, display equipment and HDMI signal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113572915A (en) * | 2021-09-24 | 2021-10-29 | 聆笙(北京)科技有限公司 | Video signal long-distance transmission method, system, equipment and medium |
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