CN104135643B - A kind of method and apparatus of long range high definition transmission - Google Patents
A kind of method and apparatus of long range high definition transmission Download PDFInfo
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Abstract
The present invention provides a kind of method and apparatus of long range high definition transmission, and methods described obtains the first signal by least one video interface；First signal is converted into data signal, and the data signal is converted to the data signal of HDBaseT agreements；The data signal of the HDBaseT agreements is sent to distal end HDBaseT display devices, so as to the different type (numeral or simulation) and the vision signal of resolution ratio that are inputted according to distinct interface, it can be realized by flexible application configuration while gather multi-channel video signal, the vision signal by compressed encoding can be transmitted without over long distances by high definition transmission technology HDBaseT for high-definition video signal, by HDBaseT reception devices HDBaseT protocol signals are reduced to be input to display device by HDMI after vision signal in distal end and shown, for realizing that high-definition video signal is no-delay, application scenarios without compression transmission over long distances.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of method and apparatus of long range high definition transmission.
Background technology
With the popularization that high-definition video signal is applied, increasing multimedia video audio scene uses high-definition signal source,
As the video conference application of meeting room industry, the long-distance video teaching application of education sector, medical surgery are all depending on religion application etc.
Very typical application model.With now being proposed more to video definition with the development multimedia industry with vision hardware technology
The high definition video signal source such as high requirement, 720P 60Hz, 1080P 60Hz is increasingly popularized, how high-definition multimedia information
Record, fast and effectively realize the record of multimedia messages, propagate with share be recording and broadcasting system realize main target.
Existing recording and broadcasting system gathers with high definition resolution signal to different video interface and realizes that technology is more complicated with what is synthesized,
And the recording and broadcasting system less stable of non-embedded platform, cost of implementation are high.
Existing recording and broadcasting system is to the direct broadcast function of video and audio, and substantially video data is handled through overcompression, to height
Image detail under clear application scenarios can not be presented completely, and the application scenarios to similar operation are even more that can not meet image clearly
Demand.
HDMI (High Definition Multimedia Interface, HDMI) cable transmission
Only 5 meters or so of distance, greatly limit high definition device image transmitting.
Various video output application scenarios under, as digital serial interface (Serial Digital Interface,
SDI) interface, HDMI, digital visual interface (Digital Visual Interface, DVI) interface and video image battle array
The HD video data of (Video Graphics Array, VGA) interface output are arranged, long range transmission video signal will be related to
Different interconnection resources, not only site operation bothers, and cost greatly improves.
The content of the invention
The embodiments of the invention provide a kind of method of long range high definition transmission, it is intended to which how solution realizes no compression processing
Video image long range transmission.
A kind of method of long range high definition transmission, methods described include：
First signal is obtained by least one video interface；
First signal is converted into data signal, and the data signal is converted to the numeral of HDBaseT agreements
Signal；
The data signal of the HDBaseT agreements is sent to HDBaseT display devices.
The data signal by the HDBaseT agreements is sent to HDBaseT display devices, including：
The data signal of the HDBaseT agreements is sent to HDBaseT trunkings, to cause in the HDBaseT
The data signal of the HDBaseT agreements is sent to HDBaseT display devices after equipment.
It is described that first signal is converted into data signal, including：
DVI data signals or VGA/YPBPR analog signals are received by least one digital visual interface-i interface, and by the DVI
Data signal or VGA/YPBPR analog signals are converted to layman's field synchronization format digital signal of 24 rgb formats；And/or
16 embedded synchronous forms are converted to by least one SDI interfaces sdi signal, and by the sdi signal
Data signal；
The data signal that the data signal is converted to HDBaseT agreements, including：
The data signal is converted into HDMI signals；
The HDMI signals are converted to the data signal of HDBaseT agreements.
Methods described also includes：
First signal is converted into 16 embedded synchronous form data signals, and by 16 embedded synchronous forms
Data signal is sent to dsp system；
Described 16 embedded synchronous form data signals are compressed coding in h .264 format, and by the sound of I2S forms
Frequency word signal compression coding is AAC forms；
The dsp system is passed the vision signal after compressed encoding and/or the audio signal by network
It is defeated, and the vision signal after coding and/or the audio signal are stored in local SATA hard disc.
Methods described also includes：
The vision signal after compression and/or the audio signal are output to outer by the dsp system by USB interface
Portion's movable storage device；
The vision signal and/or the audio after the coding that the dsp system stores the local SATA hard disc
Signal carries out image echo by HDMI.
A kind of equipment of long range high definition transmission, the equipment include：
Acquiring unit, for obtaining the first signal by least one video interface；
Converting unit, for first signal to be converted into data signal, and the data signal is converted to
The data signal of HDBaseT agreements；
Transmitting element, for the data signal of the HDBaseT agreements to be sent into HDBaseT display devices.
The transmitting element is specifically used for：
The data signal of the HDBaseT agreements is sent to HDBaseT trunkings, to cause in the HDBaseT
The data signal of the HDBaseT agreements is sent to HDBaseT display devices after equipment.
Performed in the converting unit and first signal is converted into data signal, including：
DVI data signals or VGA/YPBPR analog signals are received by least one DVI-I, and the DVI is digital
Signal or VGA/YPBPR analog signals are converted to layman's field synchronization format digital signal of 24 rgb formats；And/or
16 embedded synchronous forms are converted to by least one SDI interfaces sdi signal, and by the sdi signal
Data signal；
The data signal that the data signal is converted to HDBaseT agreements is performed in the converting unit, including：
The data signal is converted into HDMI signals；
The HDMI signals are converted to the data signal of HDBaseT agreements.
The equipment also includes dsp system, and the dsp system is specifically used for：
First signal is converted into 16 embedded synchronous form data signals, and by 16 embedded synchronous forms
Data signal is sent to dsp system；
Described 16 embedded synchronous form data signals are compressed coding in h .264 format, and by the sound of I2S forms
Frequency word signal compression coding is AAC forms；
The vision signal after compressed encoding and/or the audio signal are transmitted by network, and will coding
Vision signal and/or the audio signal afterwards is stored in local SATA hard disc.
Dsp system is stated to be additionally operable to：
The vision signal after compression and/or the audio signal are output to by outside mobile storage by USB interface
Equipment；
The vision signal after the coding of the local SATA hard disc storage and/or the audio signal are passed through into HDMI
Interface carries out image echo.
The method that the embodiment of the present invention provides a kind of transmission of long range high definition, methods described by least one DVI-I and/
Or at least one SDI interfaces obtain the first signal；First signal is converted into data signal, and the data signal is turned
It is changed to the data signal of HDBaseT agreements；The data signal of the HDBaseT agreements is sent to HDBaseT display devices, from
And vision signal of the different type (numeral or simulation) inputted according to distinct interface with resolution ratio, pass through flexible application configuration
It can be achieved to gather multi-channel video signal simultaneously, can be passed over long distances by high definition transmission technology HDBaseT for high-definition video signal
It is defeated without by compressed encoding vision signal, distal end by HDBaseT reception devices by signals revivification be vision signal after
Display device is input to by HDMI to be shown, for realizing that high-definition video signal is no-delay, passes over long distances without compression
Defeated application scenarios.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of method flow diagram of long range high definition transmission provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of long range high definition transmission provided in an embodiment of the present invention；
Fig. 3 is a kind of method schematic diagram of HDbaseT long ranges high definition transmission provided in an embodiment of the present invention；
Fig. 4 is a kind of equipment structure chart of long range high definition transmission provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
With reference to figure 1, Fig. 1 is a kind of method flow diagram of long range high definition transmission provided in an embodiment of the present invention.Such as Fig. 1 institutes
Show, the described method comprises the following steps：
Step 101, the first signal is obtained by least one video interface；
Wherein, video interface can be digital visual interface (Digital Visual Interface, DVI-I) or number
Word string line interface (Serial Digital Interface, SDI) is analog video interface.
Specifically, with reference to figure 2, Fig. 2 is a kind of structural representation of long range high definition transmission provided in an embodiment of the present invention.
As shown in Fig. 2 the signal format that two-way DVI-I video interfaces can input is respectively DVI or video graphics array (Video
Graphics Array, VGA) or YCbCr or YPbPr or SD vision signals, two-way SDI video interfaces can input sdi signal, lead to
Cross Video decoding module AD processing after enter field programmable gate array (Field-Programmable Gate Array,
FPGA) circuit unit.
The source signal of the long range high-definition signal transmission of this recorded broadcast, HDMI is not only supported, while sdi signal is believed with VGA
Number also support simultaneously, the decoding of vision signal realized by the signal decoder module of front end, be then encoded after module input to
Be transmitted after HDBaseT sending module data conversions, considerably increase application scenarios to the multifarious support of video interface
With flexible Application.
Step 102, first signal is converted into data signal, and the data signal is converted into HDBaseT associations
The data signal of view；
Alternatively, it is described that first signal is converted into data signal, including：
DVI data signals or VGA/YPBPR analog signals are received by least one digital visual interface-i interface, and by the DVI
Data signal or VGA/YPBPR analog signals are converted to layman's field synchronization format digital signal of 24 rgb formats；And/or
16 embedded synchronous forms are converted to by least one SDI interfaces sdi signal, and by the sdi signal
Data signal；
The data signal that the data signal is converted to HDBaseT agreements, including：
The data signal is converted into HDMI signals；
The HDMI signals are converted to the data signal of HDBaseT agreements.
Specifically, as shown in Fig. 2 at least one digital visual interface-i interface receives DVI data signals or VGA/YPBPR moulds
Intend signal, at least one Video Decoder modules turn the DVI data signals or VGA/YPBPR analog signals
It is changed to layman's field synchronization format digital signal of 24 rgb formats；And/or
At least one SDI interfaces sdi signal, the Video Receiver modules turn the sdi signal
It is changed to 16 embedded synchronous form data signals.
The data signal is sent to the HDMI Transmitter modules by the FPGA module；
The data signal that the HDMI Transmitter modules send the FPGA module is converted to HDMI letters
Number；
The HDBaseT Transmitter modules are converted to the HDMI signals data signal of HDBaseT agreements.
Step 103, the data signal of the HDBaseT agreements is sent to HDBaseT display devices.
Alternatively, the data signal by the HDBaseT agreements is sent to HDBaseT display devices, including：
The data signal of the HDBaseT agreements is sent to HDBaseT trunkings, to cause in the HDBaseT
The data signal of the HDBaseT agreements is sent to HDBaseT display devices after equipment.
Specifically, with reference to figure 3, Fig. 3 is a kind of method of HDbaseT long ranges high definition transmission provided in an embodiment of the present invention
Schematic diagram.Relayed as shown in figure 3, the data signal of the HDBaseT agreements is sent to HDBaseT by HDBaseT sending modules
The data signal of the HDBaseT agreements is sent to HDBaseT and receives display processing by equipment, the HDBaseT trunkings
The data signal of the HDBaseT agreements is sent to display device and shown by device, the HDBaseT receptions video-stream processor
Show.
Realizing two-way DVI-I (including collection DVI vision signals or VGA vision signals or SD SDs vision signal) and two
HDBaseT transmission sending modules over long distances are added in the 3G-SDI vision signal video and audio record-broadcast all-in-one machine equipment of road.High-definition signal
Lossless data signal is converted to after being handled by high-definition signal decoder module, data signal passes through high-definition signal coding module again
It is HDBaseT protocol datas to handle the vision signal of source by HDBaseT sending modules after processing, passes through 5 traditional classes
Or 6 class network carry out HDBaseT signal transmission.The HDBaseT that the HDBaseT data flows of transmission are transmitted through the network to distal end connects
Receiving unit, receiving device can realize the cascaded transmission of HDBaseT signals according to transmission range demand, in the end side of display device
HDBaseT HD video data are converted to HDMI signals and exported by HDMI by the HDBaseT receiving devices of afterbody
The display of lossless image is carried out to display end.
Alternatively, methods described also includes：
First signal is converted into 16 embedded synchronous form data signals, and by 16 embedded synchronous forms
Data signal is sent to Digital Signal Processing (DSP, Digital Signal Process) system；
Described 16 embedded synchronous form data signals are compressed coding in h .264 format, and by the sound of I2S forms
Frequency word signal compression coding is Advanced Audio Coding (Advanced Audio Coding, AAC), form；
The vision signal after compressed encoding and/or the audio signal are transmitted by network, and will coding
Vision signal and/or the audio signal afterwards is stored in local Serial Advanced Technology Attachment, a kind of string based on professional standard
Row hard drive interface (Serial Advanced Technology Attachment, SATA) hard disk.
Specifically, the FPGA module is additionally operable to：
16 embedded synchronous form data signals after the sdi signal is changed, which directly transmit, issues the dsp system；
Layman's field synchronization format digital signal of 24 rgb formats is converted into 16 embedded synchronous form numeral letters
Number, and 16 embedded synchronous form data signals after conversion are sent to the dsp system.
Dsp system is responsible for carrying out H.264 coding compression, and simultaneously to two-way to the vision signal of the two-way after FPGA transcodings
Audio signal carries out coding compression, and whether hardware platform can access signal according to video input signals source and fit automatically in the process
Image synthesis model is answered, that is, has vision signal input all the way just to do single-image and shows have the input of two-path video signal just to make two pictures
Face synthesis display.
Alternatively, methods described also includes：
The vision signal after compression and/or the audio signal are output to by outside mobile storage by USB interface
Equipment；
The vision signal after the coding of the local SATA hard disc storage and/or the audio signal are passed through into HDMI
Interface carries out image echo.
Specifically, after dsp system synthesizes image, HDMI signals are exported as local echo work(by decoding output interface
Energy.
For recording and broadcasting system, the point multicast function in later stage is one of its major function, be exactly record in local SATA hard disc
Video and audio multimedia messages played back.The mode of playback has two kinds of mode of operations：
One kind is that distal end plays back, i.e., by applying APP program request all-in-ones on the terminal device such as far-end computer or IPAD
In multimedia file, equipment will carry out image and audio by network on more video and audio media data transmissions to distal end APP
Play.
One kind is local echo, and the multimedia video audio file for being stored in local SATA hard disc is passed through into dsp system solution
The HDMI integrated after code by DSP, which is exported to display device, to be echoed.
The external network interface of dsp system sends the video/audio after coding to distal end in the live application of recorded broadcast
Client carries out live display.
Video/audio after dsp system coding compression is stored in local SATA hard disc, when recorded broadcast program request is applied, DSP
The video/audio that local hardware stores is sent to remote client end progress program request and shown by system.
The system also includes RS-232 or RS-485 Transceivers modules, the RS-232 or RS-
485Transceivers modules are used to the serial digital signals of the dsp system being converted to RS-232 or RS-485 agreements letter
Number.
The system also includes Audio Codec modules, and the Audio Codec modules are used for：
Simulated audio signal progress mould electricity AD processing is converted to the data signal of I2S forms, inputted to dsp system
Mcasp mouths are acquired coding.
After the digital audio and video signals that dsp system Mcasp is exported are handled by Audio Codec module electricity moulds DA, conversion
Exported for simulated audio signal.
The system also includes EHT PHY modules, the number that the EHT PHY modules export the dsp system MAC interface
Word signal is converted to network signal.
The system also includes SATA hard disc module, and the SATA hard disc module is used for after storing the dsp system coding
The vision signal and/or the audio signal.
The system also includes POE modules, and the POE modules are used to pass electric signal coupled to HDBaseT protocol datas
It is transmitted on defeated network.
HDBaseT high definition transmission technologys not only support video signal transmission, while can transmit audio signal, RS232 strings
Message number, infrared signal and usb signal.Support distal end infrared control signal reception by HDBaseT data channel transmit to
Record-broadcast all-in-one machine carries out signal transacting, and the middle control order of record-broadcast all-in-one machine can be transmitted to remote by HDBaseT data channel
End control device is remotely controlled, and by the different types of data of same network cable transmission, saves interconnection resource.HDBaseT biography
Defeated speed is 20Gbps, and transmission bandwidth fully meets lossless high definition and the transmission of voice data and other protocol datas.
Record-broadcast all-in-one machine while HDBaseT high-definition signals transmit, realize the 12V DC Power convert of input by equipment
To meet the 48V dc sources of HDBaseT agreements.Realize POE (POE) function.In the same of transmission video signal
POE function of supplying power is realized on netting twine, is together transmitted to HDBaseT receiving devices with HDBaseT protocol signals, there is provided
The power supply of HDBaseT receiving devices.Under HDBaseT agreements POE power supply highest can 100 watts of confession power supply capacity, can meet
To the power demands of multiple HDBaseT receiving devices.
The present invention provides a kind of method of long range high definition transmission, and methods described is by least one DVI-I and/or at least
One SDI interface obtains the first signal；First signal is converted into data signal, and the data signal is converted to
The data signal of HDBaseT agreements；The data signal of the HDBaseT agreements is sent to HDBaseT display devices, so as to root
, can be real by flexible application configuration according to vision signal of the different type (numeral or simulation) of distinct interface input with resolution ratio
Multi-channel video signal now is gathered simultaneously, can not had for high-definition video signal by high definition transmission technology HDBaseT transmission over long distances
Have the vision signal by compressed encoding, distal end by HDBaseT reception devices by signals revivification be vision signal after pass through
HDMI is input to display device and shown, for realizing that high-definition video signal is no-delay, without compression transmission over long distances
Application scenarios.
With reference to figure 4, Fig. 4 is a kind of equipment structure chart of long range high definition transmission provided in an embodiment of the present invention.Such as Fig. 4 institutes
Show, the equipment includes：
Acquiring unit 401, for obtaining the first signal by least one video interface；
Wherein, video interface can be digital visual interface (Digital Visual Interface, DVI-I) or number
Word string line interface (Serial Digital Interface, SDI) is analog video interface.
Specifically, with reference to figure 2, Fig. 2 is a kind of structural representation of long range high definition transmission provided in an embodiment of the present invention.
Regarded as shown in Fig. 2 the signal format that two-way DVI-I video interfaces can input is respectively DVI or VGA or YCbCr or YPbPr or SD
Frequency signal, two-way SDI video interfaces can input sdi signal, enter FPGA (Field- after being handled by Video decoding module AD
Programmable Gate Array) circuit unit.
The source signal of the long range high-definition signal transmission of this recorded broadcast, HDMI is not only supported, while sdi signal is believed with VGA
Number also support simultaneously, the decoding of vision signal realized by the signal decoder module of front end, be then encoded after module input to
Be transmitted after HDBaseT sending module data conversions, considerably increase application scenarios to the multifarious support of video interface
With flexible Application.
Converting unit 402, for first signal to be converted into data signal, and the data signal is converted to
The data signal of HDBaseT agreements；
Alternatively, performed in the converting unit 402 and first signal is converted into data signal, including：
DVI data signals or VGA/YPBPR analog signals are received by least one DVI-I, and the DVI is digital
Signal or VGA/YPBPR analog signals are converted to layman's field synchronization format digital signal of 24 rgb formats；And/or
16 embedded synchronous forms are converted to by least one SDI interfaces sdi signal, and by the sdi signal
Data signal；
The data signal that the data signal is converted to HDBaseT agreements is performed in the converting unit, including：
The data signal is converted into HDMI signals；
The HDMI signals are converted to the data signal of HDBaseT agreements.
Specifically, as shown in Fig. 2 at least one digital visual interface-i interface receives DVI data signals or VGA/YPBPR moulds
Intend signal, at least one Video Decoder modules turn the DVI data signals or VGA/YPBPR analog signals
It is changed to layman's field synchronization format digital signal of 24 rgb formats；And/or
At least one SDI interfaces sdi signal, the Video Receiver modules turn the sdi signal
It is changed to 16 embedded synchronous form data signals.
The data signal is sent to the HDMI Transmitter modules by the FPGA module；
The data signal that the HDMI Transmitter modules send the FPGA module is converted to HDMI letters
Number；
The HDBaseT Transmitter modules are converted to the HDMI signals data signal of HDBaseT agreements.
Transmitting element 403, for the data signal of the HDBaseT agreements to be sent into HDBaseT display devices.
Alternatively, the transmitting element 403 is specifically used for：
The data signal of the HDBaseT agreements is sent to HDBaseT trunkings, to cause in the HDBaseT
The data signal of the HDBaseT agreements is sent to HDBaseT display devices after equipment.
Specifically, with reference to figure 3, Fig. 3 is a kind of method of HDbaseT long ranges high definition transmission provided in an embodiment of the present invention
Schematic diagram.Relayed as shown in figure 3, the data signal of the HDBaseT agreements is sent to HDBaseT by HDBaseT sending modules
The data signal of the HDBaseT agreements is sent to HDBaseT and receives display processing by equipment, the HDBaseT trunkings
The data signal of the HDBaseT agreements is sent to display device and shown by device, the HDBaseT receptions video-stream processor
Show.
Realizing two-way DVI-I (including collection DVI vision signals or VGA vision signals or SD SDs vision signal) and two
HDBaseT transmission sending modules over long distances are added in the 3G-SDI vision signal video and audio record-broadcast all-in-one machine equipment of road.High-definition signal
Lossless data signal is converted to after being handled by high-definition signal decoder module, data signal passes through high-definition signal coding module again
It is HDBaseT protocol datas to handle the vision signal of source by HDBaseT sending modules after processing, passes through 5 traditional classes
Or 6 class network carry out HDBaseT signal transmission.The HDBaseT that the HDBaseT data flows of transmission are transmitted through the network to distal end connects
Receiving unit, receiving device can realize the cascaded transmission of HDBaseT signals according to transmission range demand, in the end side of display device
HDBaseT HD video data are converted to HDMI signals and exported by HDMI by the HDBaseT receiving devices of afterbody
The display of lossless image is carried out to display end.
Alternatively, the equipment also includes dsp system, and the dsp system is specifically used for：
First signal is converted into 16 embedded synchronous form data signals, and by 16 embedded synchronous forms
Data signal is sent to dsp system；
Described 16 embedded synchronous form data signals are compressed coding in h .264 format, and by the sound of I2S forms
Frequency word signal compression coding is AAC forms；
The vision signal after compressed encoding and/or the audio signal are transmitted by network, and will coding
Vision signal and/or the audio signal afterwards is stored in local SATA hard disc.
Specifically, the FPGA module is additionally operable to：
16 embedded synchronous form data signals after the sdi signal is changed, which directly transmit, issues the dsp system；
Layman's field synchronization format digital signal of 24 rgb formats is converted into 16 embedded synchronous form numeral letters
Number, and 16 embedded synchronous form data signals after conversion are sent to the dsp system.
Dsp system is responsible for carrying out H.264 coding compression, and simultaneously to two-way to the vision signal of the two-way after FPGA transcodings
Audio signal carries out coding compression, and whether hardware platform can access signal according to video input signals source and fit automatically in the process
Image synthesis model is answered, that is, has vision signal input all the way just to do single-image and shows have the input of two-path video signal just to make two pictures
Face synthesis display.
Alternatively, the dsp system is additionally operable to：
The vision signal after compression and/or the audio signal are output to by outside mobile storage by USB interface
Equipment；
The vision signal after the coding of the local SATA hard disc storage and/or the audio signal are passed through into HDMI
Interface carries out image echo.
Specifically, after dsp system synthesizes image, HDMI signals are exported as local echo work(by decoding output interface
Energy.
For recording and broadcasting system, the point multicast function in later stage is one of its major function, be exactly record in local SATA hard disc
Video and audio multimedia messages played back.The mode of playback has two kinds of mode of operations：
One kind is that distal end plays back, i.e., by applying APP program request all-in-ones on the terminal device such as far-end computer or IPAD
In multimedia file, equipment will carry out image and audio by network on more video and audio media data transmissions to distal end APP
Play.
One kind is local echo, and the multimedia video audio file for being stored in local SATA hard disc is passed through into dsp system solution
The HDMI integrated after code by DSP, which is exported to display device, to be echoed.
The external network interface of dsp system sends the video/audio after coding to distal end in the live application of recorded broadcast
Client carries out live display.
Video/audio after dsp system coding compression is stored in local SATA hard disc, when recorded broadcast program request is applied, DSP
The video/audio that local hardware stores is sent to remote client end progress program request and shown by system.
The system also includes RS-232 or RS-485 Transceivers modules, the RS-232 or RS-
485Transceivers modules are used to the serial digital signals of the dsp system being converted to RS-232 or RS-485 agreements letter
Number.
The system also includes Audio Codec modules, and the Audio Codec modules are used for：
Simulated audio signal progress mould electricity AD processing is converted to the data signal of I2S forms, inputted to dsp system
Mcasp mouths are acquired coding.
After the digital audio and video signals that dsp system Mcasp is exported are handled by Audio Codec module electricity moulds DA, conversion
Exported for simulated audio signal.
The system also includes EHT PHY modules, the number that the EHT PHY modules export the dsp system MAC interface
Word signal is converted to network signal.
The system also includes SATA hard disc module, and the SATA hard disc module is used for after storing the dsp system coding
The vision signal and/or the audio signal.
The system also includes POE modules, and the POE modules are used to pass electric signal coupled to HDBaseT protocol datas
It is transmitted on defeated network.
HDBaseT high definition transmission technologys not only support video signal transmission, while can transmit audio signal, RS232 strings
Message number, infrared signal and usb signal.Support distal end infrared control signal reception by HDBaseT data channel transmit to
Record-broadcast all-in-one machine carries out signal transacting, and the middle control order of record-broadcast all-in-one machine can be transmitted to remote by HDBaseT data channel
End control device is remotely controlled, and by the different types of data of same network cable transmission, saves interconnection resource.HDBaseT biography
For defeated number from being 20Gbps, transmission bandwidth fully meets lossless high definition and the transmission of voice data and other protocol datas.
Record-broadcast all-in-one machine while HDBaseT high-definition signals transmit, realize the 12V DC Power convert of input by equipment
To meet the 48V dc sources of HDBaseT agreements.Realize POE (POE) function.In the same of transmission video signal
POE function of supplying power is realized on netting twine, is together transmitted to HDBaseT receiving devices with HDBaseT protocol signals, there is provided
The power supply of HDBaseT receiving devices.Under HDBaseT agreements POE power supply highest can 100 watts of confession power supply capacity, can meet
To the power demands of multiple HDBaseT receiving devices.
The embodiment of the present invention provides a kind of equipment of long range high definition transmission, and the equipment passes through at least one DVH interfaces
And/or at least one SDI interfaces obtain the first signal；First signal is converted into data signal, and the numeral is believed
Number be converted to the data signal of HDBaseT agreements；The data signal of the HDBaseT agreements is sent to HDBaseT shown and set
It is standby, so as to the different type (numeral or simulation) and the vision signal of resolution ratio that are inputted according to distinct interface, by flexibly should
It can be achieved to gather multi-channel video signal simultaneously with configuration, can be grown for high-definition video signal by high definition transmission technology HDBaseT
Distance Transmission passes through the vision signal of compressed encoding, by HDBaseT reception devices is video by signals revivification in distal end
Display device is input to after signal by HDMI to be shown, for realizing that high-definition video signal is no-delay, grows without compression
The application scenarios of Distance Transmission.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
- A kind of 1. method of long range high definition transmission, it is characterised in that methods described includes：First signal is obtained by least one video interface, is specially：Pass through at least one digital visual interface-i interface and/or at least one Individual SDI interfaces obtain the first signal；First signal is converted into data signal, and the data signal is converted into high definition transmission technology HDBaseT associations The data signal of view；It is described first signal is converted into data signal to be specially：Sdi signal is converted into 16 embedded synchronous form numbers Word signal, DVI signals is converted to layman's field synchronization format digital signal of 24 rgb formats, then by layman's field synchronization Format digital signal is converted to 16 embedded synchronous form data signals, and 16 embedded synchronous form numerals after conversion are believed Number it is sent to dsp system；The data signal of the HDBaseT agreements is sent to HDBaseT display devices, the HDBaseT Display device adapts to image synthesis model automatically according to whether video input signals source accesses signal, that is, have all the way vision signal it is defeated Enter just to do single-image and show, there is the input of two-path video signal just to do the synthesis display of two pictures, specifically, passing through VideoDecoder Module is converted to the DVI data signals or VGA/YPBPR analog signals layman's field synchronization form number of 24 rgb formats Word signal, then layman's field synchronization format digital signal of 24 rgb formats is converted into 16 embedded synchronous form data signals, The sdi signal is converted to 16 embedded synchronous form data signals by Video Receiver modules, further according to video input Whether signal source accesses signal and adapts to image synthesis model automatically, that is, has vision signal input all the way just to do single-image and show have The synthesis display of two pictures is just done in the input of two-path video signal.
- 2. according to the method for claim 1, it is characterised in that the data signal by the HDBaseT agreements is sent HDBaseT display devices are given, including：The data signal of the HDBaseT agreements is sent to HDBaseT trunkings, to cause the HDBaseT relayings to set It is standby that the data signal of the HDBaseT agreements is sent to HDBaseT display devices.
- 3. according to the method for claim 1, it is characterised in that described that first signal is converted into data signal, bag Include：DVI data signals or video graphics array VGA/ color difference components interfaces YPBPR simulations are received by least one DVI-I Signal, and the DVI data signals or VGA/YPBPR analog signals are converted to layman's field synchronization lattice of 24 rgb formats Formula data signal；And/or16 embedded synchronous form numerals are converted to by least one SDI interfaces sdi signal, and by the sdi signal Signal；The data signal that the data signal is converted to HDBaseT agreements, including：The data signal is converted into HDMI HDMI signals；The HDMI signals are converted to the data signal of HDBaseT agreements.
- 4. according to the method for claim 1, it is characterised in that methods described also includes：First signal is converted into 16 embedded synchronous form data signals, and described 16 embedded synchronous forms are digital Signal is sent to Digital Signal Processing dsp system；Described 16 embedded synchronous form data signals are compressed coding in h .264 format, and by the audio number of I2S forms Word signal compression coding is Advanced Audio Coding AAC forms；The vision signal after compressed encoding and/or the audio signal are transmitted by network, and by after coding Vision signal and/or the audio signal are stored in local SATA hard disc.
- 5. according to the method for claim 4, it is characterised in that methods described also includes：The vision signal after compression and/or the audio signal are output to by outside movable storage device by USB interface；The vision signal after the coding of the local SATA hard disc storage and/or the audio signal are passed through into HDMI Carry out image echo.
- 6. a kind of equipment of long range high definition transmission, it is characterised in that the equipment includes：Acquiring unit, for obtaining the first signal by least one video interface, specifically by least one digital visual interface-i interface And/or at least one SDI interfaces obtain the first signal；Converting unit, for first signal to be converted into data signal, and the data signal is converted into HDBaseT associations The data signal of view；Specifically, converting unit is used to sdi signal being converted to 16 embedded synchronous form data signals, DVI signals are changed For layman's field synchronization format digital signal of 24 rgb formats, then layman's field synchronization format digital signal is converted to 16 The embedded synchronous form data signal in position, and 16 embedded synchronous form data signals after conversion are sent to dsp system；Transmitting element, for the data signal of the HDBaseT agreements to be sent into HDBaseT display devices, the HDBaseT Display device adapts to image synthesis model automatically according to whether video input signals source accesses signal, that is, have all the way vision signal it is defeated Enter just to do single-image and show, there is the input of two-path video signal just to do the synthesis display of two pictures, specifically, passing through Video The layman field that Decoder modules are converted to the DVI data signals or VGA/YPBPR analog signals 24 rgb formats is same Format digital signal is walked, then layman's field synchronization format digital signal of 24 rgb formats is converted into 16 embedded synchronous forms The sdi signal is converted to 16 embedded synchronous form data signals by data signal, Video Receiver modules, further according to Whether video input signals source accesses signal and adapts to image synthesis model automatically, that is, has vision signal input all the way just to do single-image It has been shown that, there is the input of two-path video signal just to do the synthesis display of two pictures.
- 7. equipment according to claim 6, it is characterised in that the transmitting element is specifically used for：The data signal of the HDBaseT agreements is sent to HDBaseT trunkings, to cause the HDBaseT relayings to set It is standby that the data signal of the HDBaseT agreements is sent to HDBaseT display devices.
- 8. equipment according to claim 6, it is characterised in that performed in the converting unit and change first signal For data signal, including：DVI data signals or VGA/YPBPR analog signals are received by least one digital visual interface-i interface, and the DVI is digital Signal or VGA/YPBPR analog signals are converted to layman's field synchronization format digital signal of 24 rgb formats；And/or16 embedded synchronous form numerals are converted to by least one SDI interfaces sdi signal, and by the sdi signal Signal；The data signal that the data signal is converted to HDBaseT agreements is performed in the converting unit, including：The data signal is converted into HDMI HDMI signals；The HDMI signals are converted to the data signal of HDBaseT agreements.
- 9. equipment according to claim 6, it is characterised in that the equipment also includes dsp system, the dsp system tool Body is used for：First signal is converted into 16 embedded synchronous form data signals, and described 16 embedded synchronous forms are digital Signal is sent to Digital Signal Processing dsp system；Described 16 embedded synchronous form data signals will be compressed to coding in h .264 format, and by the audio of I2S forms Data signal compressed encoding is AAC forms；The vision signal after compressed encoding and/or the audio signal are transmitted by network, and by after coding Vision signal and/or the audio signal are stored in local SATA hard disc.
- 10. equipment according to claim 9, it is characterised in that the dsp system is additionally operable to：The vision signal after compression and/or the audio signal are output to by outside movable storage device by USB interface；The vision signal after the coding of the local SATA hard disc storage and/or the audio signal are passed through into HDMI Carry out image echo.
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| CN106604120A (en) * | 2016-12-20 | 2017-04-26 | 深圳市汉科电子股份有限公司 | Extender device for transmitting super-definition audio and video signals over long distances |
| CN107249113B (en) * | 2017-07-24 | 2023-07-18 | 深圳朗田亩半导体科技有限公司 | Signal extension method and system |
| CN108924456A (en) * | 2018-08-03 | 2018-11-30 | 中船重工（武汉）凌久电子有限责任公司 | One kind can remote control multiplex roles ultra high-definition video distance transmission system |
| CN110460822A (en) * | 2019-09-12 | 2019-11-15 | 北京简元科技有限公司 | A kind of distributed image echo processing system |
| CN111277591A (en) * | 2020-01-19 | 2020-06-12 | 深圳市朗强科技有限公司 | Improved data sending and receiving method, device and system |
| CN113473059A (en) * | 2020-05-27 | 2021-10-01 | 海信集团有限公司 | Data processing method, intelligent device and intelligent processing system |
| CN113489931A (en) * | 2021-06-28 | 2021-10-08 | 深圳市比特视讯有限公司 | High-definition multi-screen image processing system |
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