CN206596145U - It is wirelessly transferred video/audio system - Google Patents
It is wirelessly transferred video/audio system Download PDFInfo
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- CN206596145U CN206596145U CN201720145623.7U CN201720145623U CN206596145U CN 206596145 U CN206596145 U CN 206596145U CN 201720145623 U CN201720145623 U CN 201720145623U CN 206596145 U CN206596145 U CN 206596145U
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Abstract
Video/audio system is wirelessly transferred the utility model discloses one kind.Wherein, the system includes：Video source device, for generating and exporting video/audio signal；Radio transmission apparatus, is connected with video source device, for handling video/audio signal, obtains video/audio code stream；LED display device, communicates with radio transmission apparatus, for showing full HD video according to video/audio code stream, wherein, wireless receiving end is provided with the control card of LED display device, wireless receiving end is used to receive video/audio code stream.The utility model is solved to be connected between LED display device and video source device by the way of wired in the prior art, influences the technical problem of video/audio transmission quality.
Description
Technical field
The utility model is related to field of data transmission, and video/audio system is wirelessly transferred in particular to one kind.
Background technology
HDMI/DVI is currently commonly used between LED display, LED television and video source device, the cable such as netting twine and optical fiber is connected,
Cable connecting wiring is cumbersome, and influence erecting bed is attractive in appearance.Meanwhile, because the wire quality used is very different, low-quality line
The problems such as material can cause flash-point in LED screen, the interface of cable easily loosens, and influences video signal transmission.And high-quality wire rod
Cost is often also higher.Several connection wires conventional at present, there is respective shortcoming for more than：
1) HDMI wire：Quality is good, length is longer wire rod cost is high, the HDMI wire that wire rod is bad and external shield is done badly
Easily cause the problems such as LED screen flash-point, flating；HDMI joints easily loosen, and influence the transmission of vision signal.
2) netting twine：Bandwidth is relatively low, a width of 250MHz of band of six class lines, and transmitting full HD image needs through overcompression, or
A part of picture is only transmitted, it is necessary to realize full HD picture by multichannel netting twine per route.
3) optical fiber：Very high is required to port cleaning, common dust and fingerprint etc. can all cause optical fiber transmission attenuation to become big,
Or even signal interruption, in addition, should be noted that fiber kinks angle can not be excessive in installation process, in order to avoid fracture；Extra photoelectricity turns
Exchange device adds the cost and complexity of system.
Connected, influenceed by the way of wired between LED display device and video source device in the prior art for above-mentioned
The problem of video/audio transmission quality, effective solution is not yet proposed at present.
Utility model content
The utility model embodiment is wirelessly transferred video/audio system there is provided one kind, at least to solve LED in the prior art
Connected between display device and video source device by the way of wired, influence the technical problem of video/audio transmission quality.
According to the one side of the utility model embodiment there is provided a kind of system for being wirelessly transferred video/audio, including：
Video source device, for generating and exporting video/audio signal；Radio transmission apparatus, is connected with video source device, for handling
Video/audio signal, obtains video/audio code stream；LED display device, communicates with radio transmission apparatus, for according to video/audio code
The full HD video of stream display, wherein, wireless receiving end is provided with the control card of LED display device, wireless receiving end is used to connect
Rating/audio code stream.
Further, radio transmission apparatus is additionally operable to transmission control command to LED display device, wherein, control command bag
Include：Colour temperature control command, intensity control command.
Further, radio transmission apparatus is additionally operable to be connected with video source device by digitizing video/audio interface, its
In, digitlization video/audio interface includes：DVI interface or HDMI.
Further, radio transmission apparatus is used for video/audio Signal Compression according to H.264 encoding and decoding agreement, obtains the
One result.
Further, radio transmission apparatus is used to the first result be packed according to RTP/RTCP agreements, depending on/sound
Frequency code stream.
Further, wireless receiving end is used to be unpacked video/audio code stream according to RTP/RTCP agreements, obtains second processing
As a result.
Further, wireless receiving end is additionally operable to be decompressed second processing result according to H.264 encoding and decoding agreement, obtains
Video/audio signal.
Further, wireless receiving end is additionally operable to send video/audio signal to LED display device, so that LED display device
Show full HD video.
Further, LED display device at least includes one of any as follows：LED display, LED television.
Further, video source device at least includes one of any as follows：Computer, mobile phone, notebook, tablet personal computer,
Blu-ray player, DVD player.
In the utility model embodiment, by the way of video/audio is wirelessly transferred, by video source device, for giving birth to
Into and export video/audio signal；Radio transmission apparatus, is connected with video source device, for handling video/audio signal, depending on/
Audio code stream；LED display device, communicates with radio transmission apparatus, for showing full HD video according to video/audio code stream, its
In, wireless receiving end is provided with the control card of LED display device, wireless receiving end is used to receive video/audio code stream, reached
Be wirelessly transferred the purpose of video/audio data, it is achieved thereby that in real time, the technique effect of continuous facile transport video/audio data, enter
And solve and connected in the prior art between LED display device and video source device by the way of wired, influence video/audio is passed
The technical problem of transmission quality.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not constitute to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is a kind of system schematic for being wirelessly transferred video/audio according to the utility model embodiment；
Fig. 2 is a kind of optional system schematic for being wirelessly transferred video/audio according to the utility model embodiment；
Fig. 3 is illustrated according to a kind of principle of optional radio transmission apparatus data transfer of the utility model embodiment
Figure；And
Fig. 4 is the principle schematic transmitted according to a kind of optional wireless transmission end data of the utility model embodiment.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
Video source device 10, radio transmission apparatus 12, LED display device 14, WIFI module 16.
Embodiment
In order that those skilled in the art more fully understand the utility model scheme, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all should
When the scope for belonging to the utility model protection.
According to the utility model embodiment there is provided a kind of system for being wirelessly transferred video/audio, Fig. 1 is according to this practicality
A kind of system schematic for being wirelessly transferred video/audio of new embodiment, as shown in figure 1, the system includes：Video source device
10th, radio transmission apparatus 12, LED display device 14, wherein,
Video source device 10, for generating and exporting video/audio signal；Radio transmission apparatus 12, with video source device 10
Connection, for handling video/audio signal, obtains video/audio code stream；LED display device 14, communicates with radio transmission apparatus 12,
For showing full HD video according to video/audio code stream, wherein, it is provided with wireless receiving in the control card of LED display device 14
End, wireless receiving end is used to receive video/audio signal.
Specifically, above-mentioned video source device 10 can be video playback apparatus, for example, computer, mobile phone, notebook, flat
Plate computer, Blu-ray player, DVD player etc., above-mentioned radio transmission apparatus 12 can be video wireless transmission equipment, for example,
Wireless transmission trunk device, wireless forwarding transponder, wireless transmitter receiver device, 2.4G wireless audio-video transmission devices etc., above-mentioned LED shows
It can be LED display, LED television etc. to show equipment 14.
In a kind of optional embodiment, the above-mentioned system for being wirelessly transferred video/audio is by transmitting wirelessly end and wirelessly connecing
Receiving end is constituted.Wherein, radio communication between wireless transmission end and wireless receiving end, wireless transmission end is arranged at radio transmission apparatus
On, wireless receiving end is arranged in the control card of LED display device 14, can be used for receiving video/audio code stream, Fig. 2 is basis
A kind of optional system schematic for being wirelessly transferred video/audio of the utility model embodiment, with reference to shown in Fig. 2, wireless transmission
Between end and wireless receiving end can by the wireless connection of WIFI module 16, wireless receiving termination receive video/audio code stream it
Afterwards, LED display device 14 can show full HD video according to above-mentioned video/audio code stream.
It should be noted that in the above embodiments of the present application, wireless video transmission is based on wireless transmission standards agreement
802.11n, speed is 300Mbps.And the full HD code check of (1080p) without compression is about 3Gbps, higher than protocol rate.At this
In application, as shown in figure 3, by using H.264 encoding and decoding agreement by video image compression to below 100Mbps, and then realize
The real-time Transmission of video/audio data, while also can guarantee that LED display device 14 shows continuous, smooth display image；It is preferred that
, the real-time Transmission of video/audio code stream can be ensured using UDP host-host protocols.It is preferred that, can also use based on UDP it
On upper-layer protocol RTP/RTCP agreements, to provide flow control and congestion control services.
In the utility model embodiment, by the way of video/audio is wirelessly transferred, by video source device, for giving birth to
Into and export video/audio signal；Radio transmission apparatus, is connected with video source device, for handling video/audio signal, depending on/
Audio code stream；LED display device, communicates with radio transmission apparatus, for showing full HD video according to video/audio code stream, its
In, wireless receiving end is provided with the control card of LED display device, wireless receiving end is used to receive video/audio code stream, reached
Be wirelessly transferred the purpose of video/audio data, it is achieved thereby that in real time, the technique effect of continuous facile transport video/audio data, enter
And solve and connected in the prior art between LED display device and video source device by the way of wired, influence video/audio is passed
The technical problem of transmission quality.
The scheme provided based on above-described embodiment, present invention also provides following preferred scheme：
Optionally, radio transmission apparatus 12 is additionally operable to transmission control command to LED display device 14, wherein, control command
Including：Colour temperature control command, intensity control command.
Specifically, in above-mentioned optional embodiment, control command can include：Colour temperature control command, brilliance control
Order.Pass through above-mentioned embodiment, it is possible to achieve transmit video/audio while, moreover it is possible to transmit colour temperature, brightness and other
The available control instruction of LED display, to reach the control to LED display, LED television.
Optionally, radio transmission apparatus 12 is additionally operable to be connected with video source device 10 by digitizing video/audio interface, its
In, digitlization video/audio interface includes：DVI interface or HDMI (Fig. 3 only shows HDMI).
In a kind of optional embodiment, between video source device 10 and radio transmission apparatus 12 can by wireless or
Wired mode is connected, it is preferred that can be connected wirelessly, and with reference to shown in Fig. 3, video source device is set with being wirelessly transferred
Standby wireless transmission end can be connected by HDMI wire, or wireless transmission end is directly plugged on to the HDMI of video source device 10
On output interface, specifically, HDMI wire can provide up to 5Gbps data transfer bandwidth, the audio of no compression can be transmitted
Signal and high-resolution, such as full HD (Full HD) vision signal.Simultaneously without signal transmit advance row D/A or
Analog/digital conversion, it is ensured that the video-audio signal transmission of first water；30 meters can farthest be transmitted, it is ensured that most application demands.
Optionally, radio transmission apparatus 12 is additionally operable to, by video/audio Signal Compression, be obtained according to H.264 encoding and decoding agreement
First result；Radio transmission apparatus 12 packs the first result according to RTP/RTCP agreements, obtains video/audio code
Stream.
As an alternative embodiment, schematic diagram as shown in Figure 3, above-mentioned wireless transmission end can connect video source
The HDMI output interface of equipment 10, further, can be by after compression by video/audio signal by H.264 encoding and decoding Protocol compression
Video code flow press RTP/RTCP protocol packings, then by the video/audio code stream obtained after packing it is wireless (for example, WiFi, GPRS,
3G, bluetooth) send.
In a kind of optional embodiment, according to RTP encapsulation specification, H.264 video stream data can be using simple
A NALU (NAL unit) is put into the RTP of the scheme of packing, i.e., one packets, (including NALU is regard as payload header target simultaneously
NALU) it is put into RTP load, set RTP leader value receiving ends to recognize copy package by RTP sequence informations and abandon, take out
NALU in effective RTP bags；H.264 video stream data is encapsulated upper RTP headers, UDP header and IP headers by transmitting terminal respectively, is pressed
Data are put into according to the form of RTP packets, and configure the parameters such as timestamp, synchronizing information and the sequence in RTP packet header, IP is formed
Packet, receiving terminal is sent to by IP network, realizes video streaming end to end.Specifically, H.264 being regarded during data transfer
The encapsulation format of frequency frame, it is as shown in table 1 below.
H.264 the encapsulation format of frame of video during 1 data transfer of table
Specifically, network data transmission is based on IP agreement, MTU (MTU) is 1500 bytes to the maximum, used
During IP/UDP/RTP protocol hierarchies, transmission byte includes the IP heads of at least 20 bytes, the UDP heads of 8 bytes, and 12 words
The RTP heads of section.Header will at least take 40 bytes, and the full-size of RTP load (that is, H.264 frame of video) is 1460
Byte.
It should be noted that the above-mentioned alternative of the application can join by using wireless transmission end Rate Control with coding
QoS feedback controls are realized in number dynamic adjustment, and Mobile state adjustment bit rate output is entered according to the coded quantization parameter of QoS feedbacks.
Optionally, wireless receiving end is used to be unpacked video/audio code stream according to RTP/RTCP agreements, obtains second processing knot
Really；Wireless receiving end decompresses second processing result according to H.264 encoding and decoding agreement, obtains video/audio signal.
Optionally, wireless receiving end is additionally operable to send video/audio signal to LED display device 14, so that LED display device
The 14 full HD videos of display.
In a kind of optional embodiment, above-mentioned wireless receiving end can be arranged at LED display, the control of LED television
In fabrication, Fig. 4 is the principle schematic transmitted according to a kind of optional wireless transmission end data of the utility model embodiment, such as
Shown in Fig. 4, after wireless receiving to video/audio code stream, unpacked by RTP/RTCP agreements, solve the video/audio that have compressed
Code stream, then decompressed by H.264 encoding and decoding agreement, video/audio code stream is reverted into normal video/audio signal.Video/audio is believed
LED display device 14 (for example, LED display, LED television) number is then forwarded to, the control card of LED display device 14 can be by logical
Control model, above-mentioned video/audio signal is included in LED display, LED television.
As an alternative embodiment, with reference to shown in Fig. 4, wireless transmission end periodically sends SR bag (senders
Report) and the RR bags (recipient's report) fed back to by wireless receiving end are received, by extracting qos parameter come monitoring video flow
Transmission situation, and then dynamic adjusts the capturing and coding parameter setting of transmitting terminal, so as to ensure the QoS of transmission.Wherein, RTCP messages
It is encapsulated in UDP datagram and is transmitted, (RTP makes using the protocol numbers of the port numbers big 1 than the rtp streaming belonging to it during transmission
With even number, RTCP uses odd number).
By using wireless transmission end Rate Control, dynamically adjustment realizes that QoS feeds back to the application such scheme with coding parameter
Control, Mobile state adjustment bit rate output is entered according to the coded quantization parameter of QoS feedbacks.In a kind of optional embodiment,
Transmit wirelessly end and use selective frame losing strategy.Unessential frame or the little frame of influence are abandoned when network condition is bad
(for example, control frame).The retransmission data frame after this discarding.It should be noted that key frame (for example, real-time Transmission is regarded
Frequency evidence) it can not abandon.
Pass through the application such scheme, it is possible to achieve radio transmission apparatus to LED display, the wireless video of LED television
Transmission.The application does not connect video source device and LED display device by cable, shortens installation period, easy to maintenance, without
Extra wiring, is equally applicable to renovated environment；While the problem of wire rod inferior is brought is avoided, and relative high quality line
Material has saved cost.The demand of different clients group can be met, the easy of current intelligent appliance is adapted to and easy-to-use, wireless interconnected etc. sends out
Exhibition trend, has preferably annotated the product concept of LED intelligent televisions.And video is transmitted based on WiFi module, it is possible to achieve with
Interconnection between the smart machine of numerous support WiFi functions such as mobile phone, tablet personal computer.
Described above is only preferred embodiment of the present utility model, it is noted that the utility model is only protected on being
The improvement that system structure and its annexation are made, for those skilled in the art, is not departing from this practicality
On the premise of new principle, some improvements and modifications can also be made, these improvements and modifications also should be regarded as of the present utility model
Protection domain.
Claims (10)
1. a kind of system for being wirelessly transferred video/audio, it is characterised in that including：
Video source device, for generating and exporting video/audio signal；
Radio transmission apparatus, is connected with the video source device, for handling the video/audio signal, obtains video/audio code
Stream；
LED display device, communicates with the radio transmission apparatus, for showing full HD video according to the video/audio code stream,
Wherein, be provided with wireless receiving end in the control card of the LED display device, the wireless receiving end be used to receiving it is described regard/
Audio code stream.
2. system according to claim 1, it is characterised in that
The radio transmission apparatus is additionally operable to transmission control command to the LED display device, wherein, the control command bag
Include：Colour temperature control command, intensity control command.
3. system according to claim 1, it is characterised in that
The radio transmission apparatus is additionally operable to be connected with the video source device by digitizing video/audio interface, wherein, it is described
Digitlization video/audio interface includes：DVI interface or HDMI.
4. the system according to claims 1 to 3 any one, it is characterised in that
The radio transmission apparatus is additionally operable to be obtained the video/audio Signal Compression at first according to H.264 encoding and decoding agreement
Manage result.
5. system according to claim 4, it is characterised in that the radio transmission apparatus is additionally operable to be assisted according to RTP/RTCP
View packs first result, obtains the video/audio code stream.
6. system according to claim 5, it is characterised in that the wireless receiving end is used to be assisted according to the RTP/RTCP
View unpacks the video/audio code stream, obtains second processing result.
7. system according to claim 6, it is characterised in that the wireless receiving end is additionally operable to H.264 compile according to
Decoding protocol decompresses the second processing result, obtains the video/audio signal.
8. system according to claim 7, it is characterised in that the wireless receiving end is additionally operable to send the video/audio
Signal is to the LED display device, so that the LED display device shows the full HD video.
9. system according to claim 8, it is characterised in that the LED display device at least includes one of any as follows：
LED display, LED television.
10. system according to claim 1, it is characterised in that the video source device at least includes one of any as follows：
Computer, mobile phone, notebook, tablet personal computer, Blu-ray player, DVD player.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145623.7U CN206596145U (en) | 2017-02-17 | 2017-02-17 | It is wirelessly transferred video/audio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145623.7U CN206596145U (en) | 2017-02-17 | 2017-02-17 | It is wirelessly transferred video/audio system |
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| Publication Number | Publication Date |
|---|---|
| CN206596145U true CN206596145U (en) | 2017-10-27 |
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ID=60128977
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720145623.7U Active CN206596145U (en) | 2017-02-17 | 2017-02-17 | It is wirelessly transferred video/audio system |
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| Country | Link |
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- 2017-02-17 CN CN201720145623.7U patent/CN206596145U/en active Active
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