CN117499738A - High-resolution video data transmission system and method - Google Patents
High-resolution video data transmission system and method Download PDFInfo
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- CN117499738A CN117499738A CN202311574523.2A CN202311574523A CN117499738A CN 117499738 A CN117499738 A CN 117499738A CN 202311574523 A CN202311574523 A CN 202311574523A CN 117499738 A CN117499738 A CN 117499738A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005457 optimization Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 7
- 238000009499 grossing Methods 0.000 claims description 3
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 claims 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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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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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a high-resolution video data transmission system and a method, wherein the system comprises a transmitting end and a receiving end which are interconnected through an IP network; the method comprises the steps that a sending end obtains original high-definition video source data through an HDMI interface, a high-definition video coding module is utilized to code the original high-definition video source data to obtain video coding data, and the video coding data is transmitted to a receiving end through an IP network; the receiving end receives video coding data through an IP network, decodes the video coding data by utilizing a video decoding module to obtain video decoding data, then performs optimization processing on the video decoding data by utilizing a later video processing module, and outputs the video decoding data after the optimization processing to 4K/60HZ or 8K/60HZ display equipment with an HDMI interface for display.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a high-resolution video data transmission system and method integrating high-definition video acquisition, transmission and display
Background
HDMI (high definition multimedia interface) can provide a data transmission bandwidth of up to 40Gbps, and is capable of digitally transmitting uncompressed high-resolution video signals and multi-channel audio data with high quality ensured, sufficient to cope with a 4K/60HZ video signal, i.e., 3840×2160@60HZ, or 8K/60HZ video signal, i.e., 7680×4320@60HZ, and an 8-channel audio signal. Also, HDMI increases support for HDCP (high bandwidth digital content protection) while providing better DDC (data display channel) optional functions. These provide technical support for the ever increasing experience demands and certain applications with higher demands on definition.
In the existing transmission process of high-definition video signals, in order to improve transmission efficiency, the video signals are usually compressed at a transmitting end and then transmitted to a receiving end, and the receiving end needs to decompress data to decode the video data, however, the compression and decompression of the video signals can affect the quality of the video signals, so that the quality of video pictures is reduced.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the invention provides a high-resolution video data transmission system and a high-resolution video data transmission method integrating high-definition video acquisition, transmission and display, which can realize the acquisition, transmission and display of high-definition video signals and have the characteristics of high video quality, good real-time performance and the like.
The invention provides a high-resolution video data transmission system, which comprises a transmitting end and a receiving end which are interconnected through an IP network;
the transmitting terminal has an HDMI interface, wherein the transmitting terminal includes:
the acquisition module is used for acquiring original high-definition video source data through the HDMI interface;
the high-definition video coding module is used for coding the original high-definition video source data to obtain video coding data;
the sending module is used for transmitting the video coding data to a receiving end through an IP network;
the receiving end comprises:
the receiving module is used for receiving the video coding data through an IP network;
the video decoding module is used for decoding the video coding data to obtain video decoding data;
and the later video processing module is used for carrying out optimization processing on the video decoding data and outputting the video decoding data after the optimization processing to 4K/60HZ or 8K/60HZ display equipment with an HDMI interface for display.
Further, the HDMI interface of the transmitting end includes 3 independent communication channels, and the 3 communication channels are respectively a TMDS channel for data transmission, a DDC channel for reading an EDID data structure of the receiving end, and a CEC channel for supporting advanced user functions.
Further, the advanced user function includes an infrared remote control function.
Further, the acquisition module is further configured to acquire an auxiliary signal, and the high-definition video encoding module is an encoding transmitting chip of HDMI and is configured to encode the high-definition video source data and the auxiliary signal to obtain video encoded data;
the sending module comprises a 3-path TMDS data channel and a 1-path TMDS clock channel, wherein the 3-path TMDS data channel and the 1-path TMDS clock channel are used for transmitting the video coding data to a receiving end, the TMDS clock channel is used for transmitting video pixel clock signals in the video coding data and is used for carrying out frequency reference when decoding for a video decoding module of the receiving end;
the video decoding module is a decoding chip of HDMI.
Further, the 4K/60HZ or 8K/60HZ display device refers to a high-definition video display terminal or a high-definition video encoder.
Further, the auxiliary signal includes a field sync signal and a line sync signal.
Further, the optimization processing includes a smoothing noise reduction processing and/or a contrast enhancement processing for the video decoding data.
Further, the IP network includes a wired IP network and/or a wireless IP network; the resolution of the original high-definition video source data is 2K/60HZ or 4K/60HZ; the high-definition video coding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to code, and the video decoding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to decode.
The invention also provides a high-resolution video data transmission method, which comprises the following steps:
step 1, an acquisition module of a transmitting end acquires original high-definition video source data through an HDMI interface, and the original high-definition video source data is sent to a high-definition video coding module of the transmitting end in a lossless manner through the HDMI interface;
step 2, the high-definition video coding module performs video coding on the original high-definition video source data to obtain video coding data;
step 3, the sending module of the sending end sends the video coding data to the receiving end through an IP network;
step 4, the receiving module of the receiving end receives the video coding data through the IP network;
step 5, the video coding module of the receiving end decodes the received video coding data to obtain video decoding data;
and 6, the later video processing module of the receiving end optimizes the video decoding data, and transmits the optimized video decoding data to 4K/60HZ or 8K/60HZ display equipment for display through an HDMI interface.
Further, the resolution of the original high-definition video source data is 2K/60HZ or 4K/60HZ; the high-definition video coding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to code, and the video decoding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to decode.
The invention has the following technical effects:
1. the original high-definition video source data is directly obtained and encoded, so that time delay can be reduced, the real-time performance of transmission can be improved, and the video quality can be improved;
2. after the optimization processing of the later video processing module, the HDMI is adopted to output to 4K/60HZ or 8K/60HZ display equipment with HDMI interface for display, so that the picture is clear and transparent, the reduction quality is high, and the problems of color distortion and picture jitter of the high-definition video picture are solved 。
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a high-resolution video data transmission system according to an embodiment of the present invention;
fig. 2 is a flowchart of a high-resolution video data transmission method according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been shown in detail to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Aiming at the defects or shortcomings in the prior art, the invention provides a high-resolution video data transmission system and a high-resolution video data transmission method integrating high-definition video acquisition, transmission and display, which can realize the acquisition, transmission and display of high-definition video signals and have the characteristics of high video quality, good real-time performance and the like.
The general technical concept of the invention is that the acquisition, transmission and display of the high-definition video signal are realized by using a high-definition video source, a high-definition video signal codec and 4K/60HZ or 8K/60HZ display equipment with an HDMI interface based on an HDMI interface and an IP network.
Referring to fig. 1, in an embodiment of a high-resolution video data transmission system according to the present invention, the transmission system 100 includes a transmitting end 1 and a receiving end 2 interconnected via an IP network.
The transmitting terminal 1 has an HDMI interface 10, wherein the transmitting terminal 1 includes:
an obtaining module 11, configured to obtain original high-definition video source data through the HDMI interface 10;
the high-definition video encoding module 12 is configured to encode the original high-definition video source data to obtain video encoded data;
a sending module 13, configured to transmit the video encoded data to a receiving end through an IP network;
the receiving end 2 includes:
a receiving module 21 for receiving the video encoded data through an IP network;
a video decoding module 22, configured to decode the video encoded data to obtain video decoded data;
the post-video processing module 23 is configured to perform optimization processing on the video decoding data, and output the video decoding data after the optimization processing to the 4K/60HZ or 8K/60HZ display device 3 with the HDMI interface for display.
The resolution of the original high-definition video source data can be 2K/60HZ or 4K/60HZ or the resolution of other formats.
According to the high-resolution video data transmission system, the original high-definition video source data is directly obtained and encoded, compression processing is not needed, time delay can be reduced, the real-time performance of transmission is improved, and the video quality can be improved; in addition, after the optimization processing of the later video processing module, the HDMI is adopted to output to 4K/60HZ or 8K/60HZ display equipment with an HDMI interface for display, so that the picture is clear and transparent, the reduction quality is high, and the problems of color distortion and picture jitter of the high-definition video picture are solved 。
Further, the HDMI interface 10 of the transmitting end includes 3 independent communication channels, and the 3 communication channels are a TMDS (minimum transform differential signal) channel for data transmission, a DDC channel for reading EDID data structures of the receiving end, and a CEC (consumer electronics control) channel for supporting advanced consumer functions, respectively. The DDC channel is a channel for reading an EDID data structure of the receiving end by the transmitting end during automatic configuration, the DDC is short for a data display channel, the EDID is short for expanding display identification data, and the DDC is a data format and comprises parameters related to terminal equipment and performance of the terminal equipment.
Wherein the CEC channel is an optional channel and the advanced user function includes an infrared remote control function.
Further, the obtaining module 11 is further configured to obtain an auxiliary signal, and the high-definition video encoding module 12 is an HDMI encoding transmitting chip and is configured to encode the high-definition video source data and the auxiliary signal to obtain video encoded data.
The transmitting module 13 includes a 3-way TMDS data channel and a 1-way TMDS clock channel, where the 3-way TMDS data channel and the 1-way TMDS clock channel are used to transmit the video encoded data to the receiving end, and the TMDS clock channel is used to transmit a video pixel clock signal in the video encoded data, where the video pixel clock signal is a frequency reference when the video decoding module 22 of the receiving end decodes the video pixel clock signal, and specifically is used as a frequency reference when the receiving end recovers the video pixel data in the video encoded data transmitted by the 3-way TMDS data channel. The video pixel clock signal is obtained by encoding auxiliary signals, wherein the auxiliary signals comprise field synchronous signals and line synchronous signals.
The video decoding module 22 is a decoding chip of HDMI.
The 4K/60HZ or 8K/60HZ display device 3 refers to a high-definition video display terminal or a high-definition video encoder.
In the embodiment of the present invention, the post-video processing module 23 performs optimization processing on the video decoding data, and specifically includes smoothing noise reduction processing and/or contrast enhancement processing on the video decoding data.
Wherein the IP network comprises a wired IP network and/or a wireless IP network; the resolution of the original high-definition video source data is 2K/60HZ or 4K/60HZ; the high-definition video encoding module 12 encodes by using high-definition video encoding and decoding standards such as MPEG-4, H.264, VC-1 or AVS, and the video decoding module 22 decodes by using high-definition video encoding and decoding standards such as MPEG-4, H.264, VC-1 or AVS.
Referring to fig. 2, the present invention further provides a high resolution video data transmission method, comprising the steps of:
step 1, an acquisition module of a transmitting end acquires original high-definition video source data through an HDMI interface, and the original high-definition video source data is sent to a high-definition video coding module of the transmitting end in a lossless manner through the HDMI interface;
step 2, the high-definition video coding module performs video coding on the original high-definition video source data to obtain video coding data;
step 3, the sending module of the sending end sends the video coding data to the receiving end through an IP network;
step 4, the receiving module of the receiving end receives the video coding data through the IP network;
step 5, the video coding module of the receiving end decodes the received video coding data to obtain video decoding data;
and 6, the later video processing module of the receiving end optimizes the video decoding data, and transmits the optimized video decoding data to 4K/60HZ or 8K/60HZ display equipment for display through an HDMI interface.
The resolution of the original high-definition video source data is 2K/60HZ or 4K/60HZ; the high-definition video coding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to code, and the video decoding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to decode.
The transmitting end 1 and the receiving end 2 of the embodiment of the present invention may be terminal devices integrated with SC1H05A, where the SC1H05A is a high-definition multimedia interface transceiver, has functions of video image rotation arbitrary interception, video segmentation, video merging, and the like, supports 40Gbps Fixed Rate Link (FRL) and 18Gbps minimum differential signal (TMDS) video rate, has three HDMI2.0 inputs and two HDMI2.1 inputs, and one HDMI2.1 output and one HDMI2.0 output, supports I2S, S/PDIF (IEC 60958/IEC 61937) input and supports I2S, S/PDIF (IEC 60958/61937) output, and simultaneously supports an eARC transmitter.
The HDMI2.1 input and output ports support video resolution of 8K60 and below, RGB/YCbCr4:4, 10 bit video, each audio port can be independently configured as an audio extraction port or an audio insertion port. The audio port supports 8-channel, 192kHz, 24-bit Pulse Code Modulation (PCM) and compressed audio formats, including high bit rate formats. SC1H05A supports Display Stream Compression (DSC) 1.2a data pass-through and High Dynamic Range (HDR) metadata pass-through for HDMI dynamic HDR, HDR10+ and dolby vision. SC1H05A implements the high bandwidth digital content protection (HDCP) 2.3 specification to protect delivery of premium content. HDCP2.3 is suitable for transmitter, receiver and repeater configurations.
HDCP2.3 is backwards compatible with HDCP2.2, and also supports HDCP1.4 to provide interoperability with legacy suites. SC1H05A uses an advanced host controller interface (API) and is configured through SPI, supporting SPI, I2C, UART, and GPIO2 SPI slave interfaces and 2 SPI master interfaces supporting booting from internal boot ROM. SC1H05A used FCBGA 35mm by 35mm.
The foregoing has described in detail a high resolution video data transmission system and method provided by embodiments of the present application, and specific examples have been applied herein to illustrate the principles and embodiments of the present application, the above description of embodiments being only for aiding in the understanding of the method and core ideas of the present application; meanwhile, as those skilled in the art will have variations in specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. A high resolution video data transmission system, characterized by: the system comprises a transmitting end and a receiving end which are interconnected through an IP network;
the transmitting terminal has an HDMI interface, wherein the transmitting terminal includes:
the acquisition module is used for acquiring original high-definition video source data through the HDMI interface;
the high-definition video coding module is used for coding the original high-definition video source data to obtain video coding data;
the sending module is used for transmitting the video coding data to a receiving end through an IP network;
the receiving end comprises:
the receiving module is used for receiving the video coding data through an IP network;
the video decoding module is used for decoding the video coding data to obtain video decoding data;
and the later video processing module is used for carrying out optimization processing on the video decoding data and outputting the video decoding data after the optimization processing to 4K/60HZ or 8K/60HZ display equipment with an HDMI interface for display.
2. A high resolution video data transmission system according to claim 1, wherein: the HDMI interface of the transmitting end comprises 3 independent communication channels, wherein the 3 communication channels are a TMDS channel for data transmission, a DDC channel for reading an EDID data structure of the receiving end and a CEC channel for supporting advanced user functions.
3. A high resolution video data transmission system according to claim 2, wherein: the advanced user function includes an infrared remote control function.
4. A high resolution video data transmission system according to claim 1, wherein: the acquisition module is also used for acquiring auxiliary signals, the high-definition video coding module is an HDMI coding transmitting chip and is used for coding the high-definition video source data and the auxiliary signals to obtain video coding data;
the sending module comprises a 3-path TMDS data channel and a 1-path TMDS clock channel, wherein the 3-path TMDS data channel and the 1-path TMDS clock channel are used for transmitting the video coding data to a receiving end, the TMDS clock channel is used for transmitting video pixel clock signals in the video coding data and is used for carrying out frequency reference when decoding for a video decoding module of the receiving end;
the video decoding module is a decoding chip of HDMI.
5. A high resolution video data transmission system according to claim 4, wherein: the 4K/60HZ or 8K/60HZ display device refers to a high-definition video display terminal or a high-definition video encoder.
6. A high resolution video data transmission system according to claim 4, wherein: the auxiliary signal includes a field sync signal and a line sync signal.
7. A high resolution video data transmission system according to claim 1, wherein: the optimization processing includes a smoothing noise reduction processing and/or a contrast enhancement processing for the video decoding data.
8. A high resolution video data transmission system according to claim 1, wherein: the IP network comprises a wired IP network and/or a wireless IP network; the resolution of the original high-definition video source data is 2K/60HZ or 4K/60HZ; the high-definition video coding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to code, and the video decoding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to decode.
9. A method for high resolution video data transmission, comprising the steps of:
step 1, an acquisition module of a transmitting end acquires original high-definition video source data through an HDMI interface, and the original high-definition video source data is sent to a high-definition video coding module of the transmitting end in a lossless manner through the HDMI interface;
step 2, the high-definition video coding module performs video coding on the original high-definition video source data to obtain video coding data;
step 3, the sending module of the sending end sends the video coding data to the receiving end through an IP network;
step 4, the receiving module of the receiving end receives the video coding data through the IP network;
step 5, the video coding module of the receiving end decodes the received video coding data to obtain video decoding data;
and 6, the later video processing module of the receiving end optimizes the video decoding data, and transmits the optimized video decoding data to 4K/60HZ or 8K/60HZ display equipment for display through an HDMI interface.
10. A method of high resolution video data transmission according to claim 9, wherein: the resolution of the original high-definition video source data is 2K/60HZ or 4K/60HZ; the high-definition video coding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to code, and the video decoding module adopts MPEG-4, H.264, VC-1 or AVS high-definition video coding and decoding standards to decode.
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