CN104135643A - Long-distance high-definition transmission method and equipment - Google Patents
Long-distance high-definition transmission method and equipment Download PDFInfo
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- CN104135643A CN104135643A CN201410374552.9A CN201410374552A CN104135643A CN 104135643 A CN104135643 A CN 104135643A CN 201410374552 A CN201410374552 A CN 201410374552A CN 104135643 A CN104135643 A CN 104135643A
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Abstract
The invention provides a long-distance high-definition transmission method and equipment. The method comprises the following steps: acquiring a first signal through at least one video interface; converting the first signal into a digital signal, and converting the digital signal into a digital signal of an HDBaseT protocol; and transmitting the digital signal of the HDBaseT protocol to remote HDBaseT display equipment in order to acquire a plurality of paths of video signals through flexible application configuration according to video signals of different types (digital or analog) and resolutions input through different interfaces. For high-definition video signals, video signals which are not subjected to compression coding can be transmitted at a long distance through a high-definition transmission technology HDBaseT, HDBaseT protocol signals are remotely reduced into video signals through an HDBaseT receiving device, and the video signals are input into the display equipment for displaying through an HDMI (High Definition Multimedia Interface) interface, so that an application scene of non-delay and non-compression long-distance transmission of the high-definition video signals is realized.
Description
Technical field
The present invention relates to the communications field, refer more particularly to a kind of method and apparatus of growing apart from high definition transmission.
Background technology
Along with popularizing of high-definition video signal application, increasing multimedia video audio scene adopts high-definition signal source, as the video conference application of meeting room industry, the long-distance video teaching application of education sector, it is all very typical application model that medical surgery waits depending on religion application.With the requirement that now the same development multimedia industry along with vision hardware technology is higher to video definition proposition, 720P60Hz, the high definition video signal sources such as 1080P60Hz are more and more universal, how high-definition multimedia information recording is got off, realize fast and effectively multimedia messages record, propagate with share be recording and broadcasting system realize main target.
Existing recording and broadcasting system is to different video interface and the collection of high definition resolution signal with synthetic to realize technology more complicated, and the recording and broadcasting system less stable of non-embedded platform, realizes cost high.
The direct broadcast function of existing recording and broadcasting system to video and audio, video data, all through overcompression processing, cannot present completely to the image detail under high definition application scenarios substantially, cannot meet especially the demand of clear picture to the application scenarios of similar operation.
HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface, HDMI) cable transmission distance only has 5 meters of left and right, has greatly limited high definition device image transmitting.
Under the application scenarios of various video output, as digital serial interface (Serial Digital Interface, SDI) interface, HDMI interface, digital visual interface (Digital Visual Interface, DVI) the HD video data of interface and video graphics array (Video Graphics Array, VGA) interface output, long Distance Transmission vision signal will relate to different interconnection resources, not only site operation trouble, and cost improves greatly.
Summary of the invention
The embodiment of the present invention provides a kind of method of growing apart from high definition transmission, is intended to solve the long Distance Transmission that how to realize the video image of processing without compression.
Grow the method apart from high definition transmission, described method comprises:
Obtain first signal by least one video interface;
Described first signal is converted to digital signal, and described digital signal is converted to the digital signal of HDBaseT agreement;
The digital signal of described HDBaseT agreement is sent to HDBaseT display device.
The described digital signal by described HDBaseT agreement sends to HDBaseT display device, comprising:
The digital signal of described HDBaseT agreement is sent to HDBaseT trunking, to make described HDBaseT trunking that the digital signal of described HDBaseT agreement is sent to HDBaseT display device.
Described described first signal is converted to digital signal, comprises:
Receive DVI digital signal or VGA/YPBPR analog signal by least one DVI-Integrated, and described DVI digital signal or VGA/YPBPR analog signal are converted to layman's field synchronization format digital signal of 24 rgb formats; And/or,
Receive sdi signal by least one SDI interface, and described sdi signal is converted to 16 embedded synchronous form digital signals;
The described digital signal that described digital signal is converted to HDBaseT agreement, comprising:
Described digital signal is converted to HDMI signal;
Described HDMI signal is converted to the digital signal of HDBaseT agreement.
Described method also comprises:
Described first signal is converted to 16 embedded synchronous form digital signals, and described 16 embedded synchronous form digital signals are sent to dsp system;
Described 16 embedded synchronous form digital signals are carried out to compressed encoding with form H.264, and be AAC form by the audio digital signals compressed encoding of I2S form;
Described dsp system transmits the described vision signal after compressed encoding and/or described audio signal by network, and vision signal and/or described audio signal after coding are stored in to local SATA hard disk.
Described method also comprises:
Described dsp system outputs to outside movable storage device by USB interface by described vision signal and/or described audio signal after compression;
Described dsp system carries out image echo by the described vision signal after the coding of described local SATA hard-disc storage and/or described audio signal by HDMI interface.
Grow the equipment apart from high definition transmission, described equipment comprises:
Acquiring unit, for obtaining first signal by least one video interface;
Converting unit, for described first signal is converted to digital signal, and is converted to described digital signal the digital signal of HDBaseT agreement;
Transmitting element, for sending to HDBaseT display device by the digital signal of described HDBaseT agreement.
Described transmitting element specifically for:
The digital signal of described HDBaseT agreement is sent to HDBaseT trunking, to make described HDBaseT trunking that the digital signal of described HDBaseT agreement is sent to HDBaseT display device.
In described converting unit, carry out described first signal be converted to digital signal, comprising:
Receive DVI digital signal or VGA/YPBPR analog signal by least one DVI-I, and described DVI digital signal or VGA/YPBPR analog signal are converted to layman's field synchronization format digital signal of 24 rgb formats; And/or,
Receive sdi signal by least one SDI interface, and described sdi signal is converted to 16 embedded synchronous form digital signals;
In described converting unit, carry out the digital signal that described digital signal is converted to HDBaseT agreement, comprising:
Described digital signal is converted to HDMI signal;
Described HDMI signal is converted to the digital signal of HDBaseT agreement.
Described equipment also comprises dsp system, described dsp system specifically for:
Described first signal is converted to 16 embedded synchronous form digital signals, and described 16 embedded synchronous form digital signals are sent to dsp system;
Described 16 embedded synchronous form digital signals are carried out to compressed encoding with form H.264, and be AAC form by the audio digital signals compressed encoding of I2S form;
Described vision signal after compressed encoding and/or described audio signal are transmitted by network, and vision signal and/or described audio signal after coding are stored in to local SATA hard disk.
State dsp system also for:
By USB interface, described vision signal and/or described audio signal after compression are outputed to outside movable storage device;
Described vision signal after the coding of described local SATA hard-disc storage and/or described audio signal are carried out to image echo by HDMI interface.
The embodiment of the present invention provides a kind of method of growing apart from high definition transmission, and described method is obtained first signal by least one DVI-I and/or at least one SDI interface, described first signal is converted to digital signal, and described digital signal is converted to the digital signal of HDBaseT agreement, the digital signal of described HDBaseT agreement is sent to HDBaseT display device, thereby the vision signal according to dissimilar (numeral or the simulation) of distinct interface input with resolution, can realize and gather multi-channel video signal simultaneously by applying flexibly configuration, the vision signal of can not pass through compressed encoding by the long Distance Transmission of high definition transmission technology HDBaseT for high-definition video signal, after signal being reduced to vision signal at far-end by HDBaseT receiving system, being input to display device by HDMI interface shows, be used for realizing high-definition video signal without time delay, without the application scenarios of the long Distance Transmission of compression.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of method flow diagram of growing apart from high definition transmission that the embodiment of the present invention provides;
Fig. 2 is a kind of structural representation of growing apart from high definition transmission that the embodiment of the present invention provides;
Fig. 3 is the long method schematic diagram apart from high definition transmission of a kind of HDbaseT that the embodiment of the present invention provides;
Fig. 4 is a kind of equipment structure chart of growing apart from high definition transmission that the embodiment of the present invention provides.
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 clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
With reference to figure 1, Fig. 1 is a kind of method flow diagram of growing apart from high definition transmission that the embodiment of the present invention provides.As shown in Figure 1, said method comprising the steps of:
Step 101, obtains first signal by least one video interface;
Wherein, video interface can be digital visual interface (Digital Visual Interface, DVI-I) or digital serial interface (Serial Digital Interface, SDI) or be analog video interface.
Concrete, with reference to figure 2, Fig. 2 is a kind of structural representation of growing apart from high definition transmission that the embodiment of the present invention provides.As shown in Figure 2, the signal format that two-way DVI-I video interface can be inputted is respectively DVI or video graphics array (Video Graphics Array, or YCbCr or YPbPr or SD vision signal VGA), two-way SDI video interface can be inputted sdi signal, after processing by video decode modules A D, enter field programmable gate array (Field-Programmable Gate Array, FPGA) circuit unit.
The length of this recorded broadcast is apart from the source signal of high-definition signal transmission, not only support HDMI, sdi signal and VGA signal are also supported simultaneously simultaneously, realized the decoding of vision signal by the signal decoding module of front end, input to again HDBaseT sending module data transaction after coding module after, send, greatly increased application scenarios to the multifarious support of video interface and flexible Application.
Step 102, is converted to digital signal by described first signal, and described digital signal is converted to the digital signal of HDBaseT agreement;
Alternatively, described described first signal is converted to digital signal, comprises:
Receive DVI digital signal or VGA/YPBPR analog signal by least one DVI-Integrated, and described DVI digital signal or VGA/YPBPR analog signal are converted to layman's field synchronization format digital signal of 24 rgb formats; And/or,
Receive sdi signal by least one SDI interface, and described sdi signal is converted to 16 embedded synchronous form digital signals;
The described digital signal that described digital signal is converted to HDBaseT agreement, comprising:
Described digital signal is converted to HDMI signal;
Described HDMI signal is converted to the digital signal of HDBaseT agreement.
Concrete, as shown in Figure 2, described at least one DVI-Integrated receives DVI digital signal or VGA/YPBPR analog signal, and described at least one Video Decoder module is converted to described DVI digital signal or VGA/YPBPR analog signal layman's field synchronization format digital signal of 24 rgb formats; And/or,
Described at least one SDI interface receives sdi signal, and described sdi signal is converted to 16 embedded synchronous form digital signals by described Video Receiver module.
Described digital signal is sent to described HDMI Transmitter module by described FPGA module;
The described digital signal that described HDMI Transmitter module sends described FPGA module is converted to HDMI signal;
Described HDBaseT Transmitter module is converted to described HDMI signal the digital signal of HDBaseT agreement.
Step 103, sends to HDBaseT display device by the digital signal of described HDBaseT agreement.
Alternatively, the described digital signal by described HDBaseT agreement sends to HDBaseT display device, comprising:
The digital signal of described HDBaseT agreement is sent to HDBaseT trunking, to make described HDBaseT trunking that the digital signal of described HDBaseT agreement is sent to HDBaseT display device.
Concrete, with reference to figure 3, Fig. 3 is the long method schematic diagram apart from high definition transmission of a kind of HDbaseT that the embodiment of the present invention provides.As shown in Figure 3, the digital signal of described HDBaseT agreement is sent to HDBaseT trunking by HDBaseT sending module, described HDBaseT trunking sends to HDBaseT to receive video-stream processor the digital signal of described HDBaseT agreement, and described HDBaseT receives video-stream processor and sends to display device to show the digital signal of described HDBaseT agreement.
Add HDBaseT to grow Distance Transmission sending module realizing on two-way DVI-I (comprise gather DVI vision signal or VGA vision signal or SD SD vision signal) and two-way 3G-SDI vision signal video and audio record-broadcast all-in-one machine equipment.High-definition signal is converted to harmless digital signal after processing by high-definition signal decoder module, digital signal is treated to HDBaseT protocol data by the vision signal of source by HDBaseT sending module after processing by high-definition signal coding module again, carries out the transmission of HDBaseT signal by 5 traditional classes or 6 class networks.The HDBaseT data flow sending is transmitted through the network to the HDBaseT receiving equipment of far-end, receiving equipment can be realized the cascade transmission of HDBaseT signal according to transmission range demand, at the HDBaseT receiving equipment of the end side afterbody of display device, HDBaseT HD video data are converted to HDMI signal and export display end to by HDMI interface and carry out the demonstration of lossless image.
Alternatively, described method also comprises:
Described first signal is converted to 16 embedded synchronous form digital signals, and described 16 embedded synchronous form digital signals are sent to Digital Signal Processing (DSP, Digital Signal Process) system;
Described 16 embedded synchronous form digital signals are carried out to compressed encoding with form H.264, and be Advanced Audio Coding (Advanced Audio Coding, AAC) by the audio digital signals compressed encoding of I2S form, form;
Described vision signal after compressed encoding and/or described audio signal are transmitted by network, and vision signal and/or described audio signal after coding are stored in to local Serial Advanced Technology Attachment, a kind of serial hardware driver interface (Serial Advanced Technology Attachment, SATA) hard disk based on industry standard.
Concrete, described FPGA module also for:
16 embedded synchronous form digital signals after described sdi signal conversion are directly issued to described dsp system;
Layman's field synchronization format digital signal of described 24 rgb formats is converted to 16 embedded synchronous form digital signals, and 16 embedded synchronous form digital signals after conversion are sent to described dsp system.
Dsp system is responsible for the vision signal of the two-way after FPGA transcoding to carry out H.264 compression coding, and two-way audio signal is carried out to compression coding simultaneously, in this process, whether hardware platform can access signal according to video input signals source and automatically adapt to image synthesis model, Ji You mono-tunnel vision signal input is just done single-image and is shown, has the input of two-path video signal just to do two picture compound displays.
Alternatively, described method also comprises:
By USB interface, described vision signal and/or described audio signal after compression are outputed to outside movable storage device;
Described vision signal after the coding of described local SATA hard-disc storage and/or described audio signal are carried out to image echo by HDMI interface.
Concrete, after dsp system is synthetic by image, export HDMI signal as local echo function by decoding output interface.
For recording and broadcasting system, the some multicast function in later stage is one of its major function, and record, the video and audio multimedia messages on local SATA hard disk carries out playback exactly.The mode of playback has two kinds of mode of operations:
One is far-end playback, on the terminal equipment such as far-end computer or IPAD by the multimedia file in application APP program request all-in-one, equipment by network by many video and audios media data transmission to the broadcasting of carrying out image and audio frequency on far-end APP.
One is local echo, exports display device to carry out echo after the multimedia video audio file that is stored in local SATA hard disk is decoded by dsp system by the integrated HDMI interface of DSP.
The external network interface of dsp system, in the time of the live application of recorded broadcast, is sent to remote client end by the video/audio after coding and carries out live demonstration.
Video/audio after dsp system compression coding is stored in local SATA hard disk, and in the time that recorded broadcast program request is applied, dsp system is sent to remote client end by the video/audio of local hardware storage and carries out program request demonstration.
Described system also comprises RS-232 or RS-485 Transceivers module, and described RS-232 or RS-485Transceivers module are for being converted to RS-232 or RS-485 protocol signal by the serial ports digital signal of described dsp system.
Described system also comprises Audio Codec module, and described Audio Codec module is used for:
Simulated audio signal is carried out to mould electricity AD and process the digital signal that is converted to I2S form, the Mcasp mouth that inputs to dsp system carries out capturing and coding.
After the digital audio and video signals of dsp system Mcasp output is processed by Audio Codec module electricity mould DA, be converted to simulated audio signal and export.
Described system also comprises EHT PHY module, and the digital signal of described dsp system MAC interface output is converted to network signal by described EHT PHY module.
Described system also comprises SATA hard disc module, and described SATA hard disc module is for storing described vision signal and/or the described audio signal after described dsp system coding.
Described system also comprises POE module, and described POE module is transmitted for the signal of telecommunication being coupled on the network of HDBaseT protocol data transmission.
HDBaseT high definition transmission technology is not only supported video signal transmission, simultaneously can transmission of audio signal, RS232 rs 232 serial interface signal, infrared signal and usb signal.The reception of support far-end infrared control signal transfers to record-broadcast all-in-one machine by HDBaseT data channel and carries out signal processing, the middle control order of record-broadcast all-in-one machine can transfer to far-end control appliance by the data channel of HDBaseT and carry out remote control, by the dissimilar data of same network cable transmission, save interconnection resource.The transmission rate of HDBaseT is 20Gbps, and transmission bandwidth meets the transmission of harmless high definition and voice data and other protocol data completely.
Record-broadcast all-in-one machine is in the transmission of HDBaseT high-definition signal, and equipment is realized the 12V DC power supply of input is converted to the 48V DC power supply that meets HDBaseT agreement.Realize Power over Ethernet (POE) function.On the same netting twine of transmission video signal, realize POE function of supplying power, together transfer to HDBaseT receiving device with HDBaseT protocol signal, the power supply of HDBaseT receiving equipment is provided.POE under HDBaseT agreement power supply the highest can the power supply capacity of 100 watts of confessions, can meet the power demands to multiple HDBaseT receiving equipments.
The invention provides a kind of method of growing apart from high definition transmission, described method is obtained first signal by least one DVI-I and/or at least one SDI interface, described first signal is converted to digital signal, and described digital signal is converted to the digital signal of HDBaseT agreement, the digital signal of described HDBaseT agreement is sent to HDBaseT display device, thereby the vision signal according to dissimilar (numeral or the simulation) of distinct interface input with resolution, can realize and gather multi-channel video signal simultaneously by applying flexibly configuration, the vision signal of can not pass through compressed encoding by the long Distance Transmission of high definition transmission technology HDBaseT for high-definition video signal, after signal being reduced to vision signal at far-end by HDBaseT receiving system, being input to display device by HDMI interface shows, be used for realizing high-definition video signal without time delay, without the application scenarios of the long Distance Transmission of compression.
With reference to figure 4, Fig. 4 is a kind of equipment structure chart of growing apart from high definition transmission that the embodiment of the present invention provides.As shown in Figure 4, described equipment comprises:
Acquiring unit 401, for obtaining first signal by least one video interface;
Wherein, video interface can be digital visual interface (Digital Visual Interface, DVI-I) or digital serial interface (Serial Digital Interface, SDI) or be analog video interface.
Concrete, with reference to figure 2, Fig. 2 is a kind of structural representation of growing apart from high definition transmission that the embodiment of the present invention provides.As shown in Figure 2, the signal format that two-way DVI-I video interface can be inputted is respectively DVI or VGA or YCbCr or YPbPr or SD vision signal, two-way SDI video interface can be inputted sdi signal, after processing, enters FPGA (Field-Programmable Gate Array) circuit unit by video decode modules A D.
The length of this recorded broadcast is apart from the source signal of high-definition signal transmission, not only support HDMI, sdi signal and VGA signal are also supported simultaneously simultaneously, realized the decoding of vision signal by the signal decoding module of front end, input to again HDBaseT sending module data transaction after coding module after, send, greatly increased application scenarios to the multifarious support of video interface and flexible Application.
Converting unit 402, for described first signal is converted to digital signal, and is converted to described digital signal the digital signal of HDBaseT agreement;
Alternatively, in described converting unit 402, carry out described first signal be converted to digital signal, comprising:
Receive DVI digital signal or VGA/YPBPR analog signal by least one DVI-I, and described DVI digital signal or VGA/YPBPR analog signal are converted to layman's field synchronization format digital signal of 24 rgb formats; And/or,
Receive sdi signal by least one SDI interface, and described sdi signal is converted to 16 embedded synchronous form digital signals;
In described converting unit, carry out the digital signal that described digital signal is converted to HDBaseT agreement, comprising:
Described digital signal is converted to HDMI signal;
Described HDMI signal is converted to the digital signal of HDBaseT agreement.
Concrete, as shown in Figure 2, described at least one DVI-Integrated receives DVI digital signal or VGA/YPBPR analog signal, and described at least one Video Decoder module is converted to described DVI digital signal or VGA/YPBPR analog signal layman's field synchronization format digital signal of 24 rgb formats; And/or,
Described at least one SDI interface receives sdi signal, and described sdi signal is converted to 16 embedded synchronous form digital signals by described Video Receiver module.
Described digital signal is sent to described HDMI Transmitter module by described FPGA module;
The described digital signal that described HDMI Transmitter module sends described FPGA module is converted to HDMI signal;
Described HDBaseT Transmitter module is converted to described HDMI signal the digital signal of HDBaseT agreement.
Transmitting element 403, for sending to HDBaseT display device by the digital signal of described HDBaseT agreement.
Alternatively, described transmitting element 403 specifically for:
The digital signal of described HDBaseT agreement is sent to HDBaseT trunking, to make described HDBaseT trunking that the digital signal of described HDBaseT agreement is sent to HDBaseT display device.
Concrete, with reference to figure 3, Fig. 3 is the long method schematic diagram apart from high definition transmission of a kind of HDbaseT that the embodiment of the present invention provides.As shown in Figure 3, the digital signal of described HDBaseT agreement is sent to HDBaseT trunking by HDBaseT sending module, described HDBaseT trunking sends to HDBaseT to receive video-stream processor the digital signal of described HDBaseT agreement, and described HDBaseT receives video-stream processor and sends to display device to show the digital signal of described HDBaseT agreement.
Add HDBaseT to grow Distance Transmission sending module realizing on two-way DVI-I (comprise gather DVI vision signal or VGA vision signal or SD SD vision signal) and two-way 3G-SDI vision signal video and audio record-broadcast all-in-one machine equipment.High-definition signal is converted to harmless digital signal after processing by high-definition signal decoder module, digital signal is treated to HDBaseT protocol data by the vision signal of source by HDBaseT sending module after processing by high-definition signal coding module again, carries out the transmission of HDBaseT signal by 5 traditional classes or 6 class networks.The HDBaseT data flow sending is transmitted through the network to the HDBaseT receiving equipment of far-end, receiving equipment can be realized the cascade transmission of HDBaseT signal according to transmission range demand, at the HDBaseT receiving equipment of the end side afterbody of display device, HDBaseT HD video data are converted to HDMI signal and export display end to by HDMI interface and carry out the demonstration of lossless image.
Alternatively, described equipment also comprises dsp system, described dsp system specifically for:
Described first signal is converted to 16 embedded synchronous form digital signals, and described 16 embedded synchronous form digital signals are sent to dsp system;
Described 16 embedded synchronous form digital signals are carried out to compressed encoding with form H.264, and be AAC form by the audio digital signals compressed encoding of I2S form;
Described vision signal after compressed encoding and/or described audio signal are transmitted by network, and vision signal and/or described audio signal after coding are stored in to local SATA hard disk.
Concrete, described FPGA module also for:
16 embedded synchronous form digital signals after described sdi signal conversion are directly issued to described dsp system;
Layman's field synchronization format digital signal of described 24 rgb formats is converted to 16 embedded synchronous form digital signals, and 16 embedded synchronous form digital signals after conversion are sent to described dsp system.
Dsp system is responsible for the vision signal of the two-way after FPGA transcoding to carry out H.264 compression coding, and two-way audio signal is carried out to compression coding simultaneously, in this process, whether hardware platform can access signal according to video input signals source and automatically adapt to image synthesis model, Ji You mono-tunnel vision signal input is just done single-image and is shown, has the input of two-path video signal just to do two picture compound displays.
Alternatively, described dsp system also for:
By USB interface, described vision signal and/or described audio signal after compression are outputed to outside movable storage device;
Described vision signal after the coding of described local SATA hard-disc storage and/or described audio signal are carried out to image echo by HDMI interface.
Concrete, after dsp system is synthetic by image, export HDMI signal as local echo function by decoding output interface.
For recording and broadcasting system, the some multicast function in later stage is one of its major function, and record, the video and audio multimedia messages on local SATA hard disk carries out playback exactly.The mode of playback has two kinds of mode of operations:
One is far-end playback, on the terminal equipment such as far-end computer or IPAD by the multimedia file in application APP program request all-in-one, equipment by network by many video and audios media data transmission to the broadcasting of carrying out image and audio frequency on far-end APP.
One is local echo, exports display device to carry out echo after the multimedia video audio file that is stored in local SATA hard disk is decoded by dsp system by the integrated HDMI interface of DSP.
The external network interface of dsp system, in the time of the live application of recorded broadcast, is sent to remote client end by the video/audio after coding and carries out live demonstration.
Video/audio after dsp system compression coding is stored in local SATA hard disk, and in the time that recorded broadcast program request is applied, dsp system is sent to remote client end by the video/audio of local hardware storage and carries out program request demonstration.
Described system also comprises RS-232 or RS-485 Transceivers module, and described RS-232 or RS-485Transceivers module are for being converted to RS-232 or RS-485 protocol signal by the serial ports digital signal of described dsp system.
Described system also comprises Audio Codec module, and described Audio Codec module is used for:
Simulated audio signal is carried out to mould electricity AD and process the digital signal that is converted to I2S form, the Mcasp mouth that inputs to dsp system carries out capturing and coding.
After the digital audio and video signals of dsp system Mcasp output is processed by Audio Codec module electricity mould DA, be converted to simulated audio signal and export.
Described system also comprises EHT PHY module, and the digital signal of described dsp system MAC interface output is converted to network signal by described EHT PHY module.
Described system also comprises SATA hard disc module, and described SATA hard disc module is for storing described vision signal and/or the described audio signal after described dsp system coding.
Described system also comprises POE module, and described POE module is transmitted for the signal of telecommunication being coupled on the network of HDBaseT protocol data transmission.
HDBaseT high definition transmission technology is not only supported video signal transmission, simultaneously can transmission of audio signal, RS232 rs 232 serial interface signal, infrared signal and usb signal.The reception of support far-end infrared control signal transfers to record-broadcast all-in-one machine by HDBaseT data channel and carries out signal processing, the middle control order of record-broadcast all-in-one machine can transfer to far-end control appliance by the data channel of HDBaseT and carry out remote control, by the dissimilar data of same network cable transmission, save interconnection resource.The transmission number of HDBaseT is from being 20Gbps, and transmission bandwidth meets the transmission of harmless high definition and voice data and other protocol data completely.
Record-broadcast all-in-one machine is in the transmission of HDBaseT high-definition signal, and equipment is realized the 12V DC power supply of input is converted to the 48V DC power supply that meets HDBaseT agreement.Realize Power over Ethernet (POE) function.On the same netting twine of transmission video signal, realize POE function of supplying power, together transfer to HDBaseT receiving device with HDBaseT protocol signal, the power supply of HDBaseT receiving equipment is provided.POE under HDBaseT agreement power supply the highest can the power supply capacity of 100 watts of confessions, can meet the power demands to multiple HDBaseT receiving equipments.
The embodiment of the present invention provides a kind of equipment of growing apart from high definition transmission, and described equipment obtains first signal by least one DVH interface and/or at least one SDI interface, described first signal is converted to digital signal, and described digital signal is converted to the digital signal of HDBaseT agreement, the digital signal of described HDBaseT agreement is sent to HDBaseT display device, thereby the vision signal according to dissimilar (numeral or the simulation) of distinct interface input with resolution, can realize and gather multi-channel video signal simultaneously by applying flexibly configuration, the vision signal of can not pass through compressed encoding by the long Distance Transmission of high definition transmission technology HDBaseT for high-definition video signal, after signal being reduced to vision signal at far-end by HDBaseT receiving system, being input to display device by HDMI interface shows, be used for realizing high-definition video signal without time delay, without the application scenarios of the long Distance Transmission of compression.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a long method apart from high definition transmission, is characterized in that, described method comprises:
Obtain first signal by least one video interface;
Described first signal is converted to digital signal, and described digital signal is converted to the digital signal of high definition transmission technology HDBaseT agreement;
The digital signal of described HDBaseT agreement is sent to HDBaseT display device.
2. method according to claim 1, is characterized in that, the described digital signal by described HDBaseT agreement sends to HDBaseT display device, comprising:
The digital signal of described HDBaseT agreement is sent to HDBaseT trunking, to make described HDBaseT trunking that the digital signal of described HDBaseT agreement is sent to HDBaseT display device.
3. method according to claim 1, is characterized in that, described described first signal is converted to digital signal, comprising:
Receive DVI digital signal or video graphics array VGA/ color difference components interface YPbPr analog signal by least one DVI-I, and described DVI digital signal or VGA/YPbPr analog signal are converted to layman's field synchronization format digital signal of 24 rgb formats; And/or,
Receive sdi signal by least one SDI interface, and described sdi signal is converted to 16 embedded synchronous form digital signals;
The described digital signal that described digital signal is converted to HDBaseT agreement, comprising:
Described digital signal is converted to HDMI (High Definition Multimedia Interface) HDMI signal;
Described HDMI signal is converted to the digital signal of HDBaseT agreement.
4. method according to claim 1, is characterized in that, described method also comprises:
Described first signal is converted to 16 embedded synchronous form digital signals, and described 16 embedded synchronous form digital signals are sent to Digital Signal Processing dsp system;
Described 16 embedded synchronous form digital signals are carried out to compressed encoding with form H.264, and be Advanced Audio Coding AAC form by the audio digital signals compressed encoding of I2S form;
Described vision signal after compressed encoding and/or described audio signal are transmitted by network, and vision signal and/or described audio signal after coding are stored in to local SATA hard disk.
5. according to the method described in claim 1 to 4, it is characterized in that, described method also comprises:
By USB interface, described vision signal and/or described audio signal after compression are outputed to outside movable storage device;
Described vision signal after the coding of described local SATA hard-disc storage and/or described audio signal are carried out to image echo by HDMI interface.
6. a long equipment apart from high definition transmission, is characterized in that, described equipment comprises:
Acquiring unit, for obtaining first signal by least one video interface;
Converting unit, for described first signal is converted to digital signal, and is converted to described digital signal the digital signal of HDBaseT agreement;
Transmitting element, for sending to HDBaseT display device by the digital signal of described HDBaseT agreement.
7. equipment according to claim 6, is characterized in that, described transmitting element specifically for:
The digital signal of described HDBaseT agreement is sent to HDBaseT trunking, to make described HDBaseT trunking that the digital signal of described HDBaseT agreement is sent to HDBaseT display device.
8. equipment according to claim 6, is characterized in that, in described converting unit, carries out described first signal is converted to digital signal, comprising:
Receive DVI digital signal or VGA/YPBPR analog signal by least one DVI-Integrated, and described DVI digital signal or VGA/YPBPR analog signal are converted to layman's field synchronization format digital signal of 24 rgb formats; And/or,
Receive sdi signal by least one SDI interface, and described sdi signal is converted to 16 embedded synchronous form digital signals;
In described converting unit, carry out the digital signal that described digital signal is converted to HDBaseT agreement, comprising:
Described digital signal is converted to HDMI (High Definition Multimedia Interface) HDMI signal;
Described HDMI signal is converted to the digital signal of HDBaseT agreement.
9. equipment according to claim 6, is characterized in that, described equipment also comprises dsp system, described dsp system specifically for:
Described first signal is converted to 16 embedded synchronous form digital signals, and described 16 embedded synchronous form digital signals are sent to Digital Signal Processing dsp system;
Just described 16 embedded synchronous form digital signals are carried out compressed encoding with form H.264, and are AAC form by the audio digital signals compressed encoding of I2S form;
Described vision signal after compressed encoding and/or described audio signal are transmitted by network, and vision signal and/or described audio signal after coding are stored in to local SATA hard disk.
10. according to the equipment described in claim 6 to 9, it is characterized in that, described dsp system also for:
By USB interface, described vision signal and/or described audio signal after compression are outputed to outside movable storage device;
Described vision signal after the coding of described local SATA hard-disc storage and/or described audio signal are carried out to image echo by HDMI interface.
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