CN106878803A - It is wirelessly transferred method, device and the system of video/audio - Google Patents
It is wirelessly transferred method, device and the system of video/audio Download PDFInfo
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- CN106878803A CN106878803A CN201710087391.9A CN201710087391A CN106878803A CN 106878803 A CN106878803 A CN 106878803A CN 201710087391 A CN201710087391 A CN 201710087391A CN 106878803 A CN106878803 A CN 106878803A
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
Abstract
The invention discloses a kind of method for being wirelessly transferred video/audio, device and system.Wherein, the system includes：Video source device, for generating and exports video/audio signal；Radio transmission apparatus, are connected with video source device, for processing video/audio signal, obtain 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 present invention is solved and connected by the way of wired between LED display device and video source device in the prior art, influences the technical problem of video/audio transmission quality.
Description
Technical field
The present invention relates to field of data transmission, in particular to a kind of method for being wirelessly transferred video/audio, device with
And system.
Background technology
Current that HDMI/DVI is 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 for using 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：The wire rod high cost that quality is good, length is more long, 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 to port cleaning requirement, the Optical Fiber Transmission that common dust and fingerprint etc. can all cause decays and becomes 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 increased the cost and complexity of system.
Connected by the way of wired between LED display device and video source device in the prior art for above-mentioned, influenceed
The problem of video/audio transmission quality, not yet proposes effective solution at present.
The content of the invention
A kind of method for being wirelessly transferred video/audio, device and system are the embodiment of the invention provides, it is existing at least to solve
Have in technology and connected by the way of wired between LED display device and video source device, influence the skill of video/audio transmission quality
Art problem.
A kind of one side according to embodiments of the present invention, there is provided system for being wirelessly transferred video/audio, including：Video
Source device, for generating and exports video/audio signal；Radio transmission apparatus, are connected with video source device, and/sound is regarded for processing
Frequency signal, obtains video/audio code stream；LED display device, communicates with radio transmission apparatus, for being shown according to video/audio code stream
Full HD video, wherein, wireless receiving end is provided with the control card of LED display device, wireless receiving end is used to receive regarding/sound
Frequency code stream.
Another aspect according to embodiments of the present invention, additionally provides a kind of method for being wirelessly transferred video/audio, including：Nothing
Line transmitting terminal gets video/audio signal from video source device；Wireless transmission end is according to H.264 encoding and decoding agreement by video/audio
Signal Compression, obtains the first result；The first result is packed according to RTP/RTCP agreements in wireless transmission end, obtains
Video/audio code stream；Wireless transmission end sends video/audio code stream.
Another aspect according to embodiments of the present invention, additionally provides a kind of method for being wirelessly transferred video/audio, including：Nothing
Line receiving terminal receives the video/audio code stream that wireless transmission end sends, wherein, wireless transmission end is arranged in transmission equipment, wirelessly
Receiving terminal is arranged in the control card of LED display device；Wireless receiving end is according to RTP/RTCP agreements by video/audio code stream solution
Bag, obtains second processing result；Wireless receiving end decompresses second processing result according to H.264 encoding and decoding agreement, depending on/sound
Frequency code signal；Wireless receiving end sends video/audio signal to LED display device, so that LED display device is believed according to video/audio
Number full HD video of display.
Another aspect according to embodiments of the present invention, additionally provides a kind of wireless base station apparatus, including：Acquisition module, uses
In getting video/audio signal from video source device；First processing module, for according to H.264 encoding and decoding agreement by video/audio
Signal Compression, obtains the first result；Second processing module, for being beaten the first result according to RTP/RTCP agreements
Bag, obtains video/audio code stream；First sending module, for sending video/audio code stream.
Another aspect according to embodiments of the present invention, and there is provided a kind of radio receiver, including：Receiver module, uses
In the video/audio code stream for receiving wireless base station apparatus transmission, wherein, wireless base station apparatus are arranged in transmission equipment, are wirelessly connect
Receiving apparatus are arranged in the control card of LED display device；3rd processing module, for according to RTP/RTCP agreements by video/audio
Code stream is unpacked, and obtains second processing result；Fourth processing module, for according to H.264 encoding and decoding agreement by second processing result
Decompression, obtains video/audio code signal；Second sending module, for sending video/audio signal to LED display device, so that LED
Display device shows full HD video according to video/audio signal.
In embodiments of the present invention, by the way of video/audio is wirelessly transferred, by video source device, for generating simultaneously
Output video/audio signal；Radio transmission apparatus, are connected with video source device, for processing video/audio signal, obtain 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, has reached nothing
Line transmit video/audio data purpose, it is achieved thereby that in real time, the technique effect of continuous facile transport video/audio data, and then
Solve and connected by the way of wired between LED display device and video source device in the prior art, influence video/audio transmission
The technical problem of quality.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of system schematic for being wirelessly transferred video/audio according to embodiments of the present invention；
Fig. 2 is a kind of optional system schematic for being wirelessly transferred video/audio according to embodiments of the present invention；
Fig. 3 is the principle schematic of a kind of optional radio transmission apparatus data transfer according to embodiments of the present invention；
Fig. 4 is the principle schematic of a kind of optional wireless transmission end data transmission according to embodiments of the present invention；
Fig. 5 is a kind of method flow diagram for being wirelessly transferred video/audio according to embodiments of the present invention；
Fig. 6 is a kind of method flow diagram for being wirelessly transferred video/audio according to embodiments of the present invention；
Fig. 7 is a kind of schematic diagram of wireless base station apparatus according to embodiments of the present invention；And
Fig. 8 is a kind of schematic diagram of radio receiver according to embodiments of the present invention.
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, acquisition module 70, first
Processing module 72, Second processing module 74, the first sending module 76, receiver module 80, the 3rd processing module 82, fourth process mould
Block 84, the second sending module 86.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of present invention protection
Enclose.
It should be noted that term " first ", " in description and claims of this specification and above-mentioned accompanying drawing
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or other intrinsic steps of equipment or unit.
Embodiment 1
According to embodiments of the present invention, there is provided a kind of system for being wirelessly transferred video/audio, Fig. 1 is implemented according to the present invention
A kind of system schematic for being wirelessly transferred video/audio of example, as shown in figure 1, the system includes：Video source device 10, wireless biography
Transfer device 12, LED display device 14, wherein,
Video source device 10, for generating and exports video/audio signal；Radio transmission apparatus 12, with video source device 10
Connection, for processing 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 show
Show that equipment 14 can be for LED display, LED television etc..
In a kind of optional implementation method, the above-mentioned system for being wirelessly transferred video/audio is by transmitting wirelessly end and wirelessly connecing
Receiving end is constituted.Wherein, wireless transmission end is arranged on radio transmission apparatus, and wireless receiving end is arranged at LED display device 14
In control card, can be used for receiving video/audio code stream, Fig. 2 be one kind according to embodiments of the present invention it is optional be wirelessly transferred regarding/
The system schematic of audio, with reference to shown in Fig. 2, can be wireless by WIFI module 16 between wireless transmission end and wireless receiving end
Connection, after wireless receiving termination receives video/audio code stream, LED display device 14 can be aobvious according to above-mentioned video/audio code stream
Show full HD video.
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 code check of full HD (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.Preferably, can also using based on UDP it
On upper-layer protocol RTP/RTCP agreements flow control and congestion control services are provided.
In embodiments of the present invention, by the way of video/audio is wirelessly transferred, by video source device, for generating simultaneously
Output video/audio signal；Radio transmission apparatus, are connected with video source device, for processing video/audio signal, obtain 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, has reached nothing
Line transmit video/audio data purpose, it is achieved thereby that in real time, the technique effect of continuous facile transport video/audio data, and then
Solve and connected by the way of wired between LED display device and video source device in the prior art, influence video/audio transmission
The technical problem of quality.
Based on the scheme that above-described embodiment is provided, present invention also provides following preferred scheme：
Optionally, radio transmission apparatus 12 are 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 implementation method, control command can include：Colour temperature control command, brilliance control
Order.By above-mentioned implementation method, 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 are 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 will directly transmit wirelessly the HDMI that end is plugged on video source device 10
On output interface, specifically, HDMI wire can provide the up to data transfer bandwidth of 5Gbps, the audio without 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 are additionally operable to, by video/audio Signal Compression, be obtained according to H.264 encoding and decoding agreement
First result；Radio transmission apparatus 12 pack the first result according to RTP/RTCP agreements, obtain video/audio code
Stream.
Used as a kind of optional implementation method, schematic diagram as shown in Figure 3, above-mentioned wireless transmission end can connect video source
The HDMI output interface of equipment 10, H.264 encoding and decoding Protocol compression is pressed by video/audio signal, further, can be by after compression
Video code flow press RTP/RTCP protocol packings, then the video/audio code stream that will be obtained after packing it is wireless (for example, WiFi, GPRS,
3G, bluetooth) send.
In a kind of optional implementation method, the encapsulation specification according to RTP, 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., packets, using NALU (including simultaneously as payload header target
NALU) it is put into the load of RTP, RTP leader values receiving end is set and copy package is recognized by RTP sequence informations and is abandoned, 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
Form according to RTP packets is put into data, and configures the parameters such as timestamp, synchronizing information and the sequence in RTP packet header, forms IP
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, is using
During the protocol hierarchies of IP/UDP/RTP, 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 is below the data structure in the RTP packet header in H.264：
It should be noted that the above-mentioned alternative of the application is moved by using wireless transmission end Rate Control with coding parameter
QoS feedback controls are realized in state 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, Fig. 4 is the optional wireless transmission end number of one kind according to embodiments of the present invention
According to the principle schematic of transmission, as shown in figure 4, above-mentioned wireless receiving end can be arranged at the control of LED display, LED television
On card, by after wireless receiving to video/audio code stream, being unpacked by RTP/RTCP agreements, the video/audio code that have compressed is solved
Stream, then decompressed by H.264 encoding and decoding agreement, video/audio code stream is reverted into normal video/audio signal.Video/audio signal
LED display device 14 (for example, LED display, LED television) is then forwarded to, the control card of LED display device 14 can be by general
Control model, by above-mentioned video/audio signal include in LED display, LED television.
Used as a kind of optional implementation method, 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.
RTCP messages are transmitted in being encapsulated in UDP datagram, big using the port numbers than the rtp streaming belonging to it during transmission
1 protocol number (RTP uses even number, and RTCP uses odd number).The following is RTCP header data structures：
RTCP allows transmitting terminal and the receiving terminal relevant session information of exchange using 5 basic type of messages.
The encapsulation data structure of RTCP recipient's messages RR：
The encapsulation data structure of RTCP sender's messages SR：
The application such scheme is by the way that using wireless transmission end Rate Control, dynamically adjustment realizes that QoS feeds back 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 implementation method,
Wireless transmission end uses selective frame losing strategy.Unessential frame is abandoned when network condition is bad or little frame is influenceed
(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) can not abandon.
By 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 that wire rod inferior brings is avoided, and relative high quality line
Material has saved cost.The demand of different clients group can be met, the easy to be easy-to-use, wireless interconnected etc. of current intelligent appliance is adapted to and sent 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, panel computer.
Embodiment 2
According to embodiments of the present invention, there is provided a kind of embodiment of the method for being wirelessly transferred video/audio, it is necessary to explanation,
Can be performed in the such as one group computer system of computer executable instructions the step of the flow of accompanying drawing is illustrated, and
And, although logical order is shown in flow charts, but in some cases, can perform institute with different from order herein
The step of showing or describe.
Fig. 5 is a kind of method flow diagram for being wirelessly transferred video/audio according to embodiments of the present invention, as shown in figure 5, the party
Method comprises the following steps：
Step S102, wireless transmission end gets video/audio signal from video source device；
Step S104, wireless transmission end, by video/audio Signal Compression, obtains the first treatment according to H.264 encoding and decoding agreement
As a result；
The first result is packed according to RTP/RTCP agreements in step S106, wireless transmission end, obtains video/audio code
Stream；
Step S108, wireless transmission end sends video/audio code stream.
Specifically, in above-mentioned steps S102 to step S108, wireless transmission end can be arranged on radio transmission apparatus,
Radio transmission apparatus can be video wireless transmission equipment, for example, wireless transmission trunk device, wireless forwarding transponder, wireless hair
Receiver, 2.4G wireless audio-video transmission devices etc. are penetrated, above-mentioned video source device can be video playback apparatus, for example, computer,
Mobile phone, notebook, panel computer, Blu-ray player, DVD player etc..
Used as a kind of optional implementation method, the HDMI outputs that above-mentioned wireless transmission end can connect video source device connect
Mouthful, by video/audio signal by H.264 encoding and decoding Protocol compression, further, the video code flow after compression can be pressed RTP/
Rtcp protocol is packed, then the video/audio code stream that will be obtained after packing wireless (for example, WiFi, GPRS, 3G, bluetooth) sends.
In the above embodiments of the present application, wireless video transmission is based on wireless transmission standards agreement 802.11n, and speed is
300Mbps.And the code check of full HD (1080p) without compression is about 3Gbps, higher than protocol rate.In this application, such as Fig. 3 institutes
Show, by using H.264 encoding and decoding agreement by video image compression to below 100Mbps, and then realize video/audio data
Real-time Transmission, while also can guarantee that LED display device 14 shows continuous, smooth display image；Preferably, UDP can be used
Host-host protocol ensures the real-time Transmission of video/audio code stream.Preferably, can also be using based on the upper-layer protocol on UDP
RTP/RTCP agreements provide flow control and congestion control services.
It should be noted that the application such scheme is dynamically adjusted by using wireless transmission end Rate Control with coding parameter
It is whole to realize QoS feedback controls.Enter Mobile state adjustment bit rate output according to the coded quantization parameter of QoS feedbacks, it is optional in one kind
Implementation method in, wireless transmission end use selective frame losing strategy.Abandoned when network condition is bad unessential frame or
The little frame (for example, control frame) of influence.The retransmission data frame after this discarding.It should be noted that key frame (for example,
The video data of real-time Transmission) can not abandon.
In embodiments of the present invention, by the way of video/audio is wirelessly transferred, by transmitting wirelessly end from video source device
Get video/audio signal；Wireless transmission end, by video/audio Signal Compression, obtains the first treatment according to H.264 encoding and decoding agreement
As a result；The first result is packed according to RTP/RTCP agreements in wireless transmission end, obtains video/audio code stream；Wireless transmission end
Send video/audio code stream, reached the purpose for being wirelessly transferred video/audio data, it is achieved thereby that in real time, continuous facile transport
The technique effect of video/audio data, and then solve in the prior art between LED display device and video source device using wired
Mode connect, influence video/audio transmission quality technical problem.
Optionally, wireless transmission end is connected by digital video optical transceiver interface with video source device, wherein, digitlization regards sound
Frequency interface includes：DVI interface or HDMI.
In a kind of optional embodiment, video source device can be connected with wireless transmission end by HDMI wire, or directly
Connect and wireless transmission end is plugged on the output interface of the HDMI of video source device, specifically, HDMI wire can be provided up to
The data transfer bandwidth of 5Gbps, can transmit audio signal and high-resolution without compression, such as full HD (Full HD) is regarded
Frequency signal.Without transmitting advance row D/A or analog/digital conversion in signal, 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.
Embodiment 3
According to embodiments of the present invention, there is provided a kind of embodiment of the method for being wirelessly transferred video/audio, it is necessary to explanation,
Can be performed in the such as one group computer system of computer executable instructions the step of the flow of accompanying drawing is illustrated, and
And, although logical order is shown in flow charts, but in some cases, can perform institute with different from order herein
The step of showing or describe.
Fig. 6 is a kind of method flow diagram for being wirelessly transferred video/audio according to embodiments of the present invention, as shown in fig. 6, the party
Method comprises the following steps：
Step S202, wireless receiving end receives the video/audio code stream that wireless transmission end sends, wherein, wireless transmission end sets
It is placed on radio transmission apparatus, wireless receiving end is arranged in the control card of LED display device；
Step S204, wireless receiving end unpacks video/audio code stream according to RTP/RTCP agreements, obtains second processing knot
Really；
Step S206, wireless receiving end decompresses second processing result according to H.264 encoding and decoding agreement, obtains video/audio
Code signal；
Step S208, wireless receiving end sends video/audio signal to LED display device so that LED display device according to
Video/audio signal shows full HD video.
Specifically, in above-mentioned steps S202 to step S208, wireless transmission end can be by HDMI and video source
Equipment is connected, and video source device can be video playback apparatus, for example, computer, mobile phone, notebook, panel computer, blue light are broadcast
Put device, DVD player etc..Above-mentioned wireless transmission end can be arranged on radio transmission apparatus, radio transmission apparatus can be regarding
Frequency radio transmission apparatus, for example, wireless transmission trunk device, wireless forwarding transponder, wireless transmitter receiver device, 2.4G is wireless, and sound is regarded
Frequency transmitter etc., above-mentioned LED display device can be LED display, LED television.
In a kind of optional embodiment, can be wireless by WIFI module between wireless transmission end and wireless receiving end
Connection, above-mentioned wireless receiving end can be arranged in the control card of LED display, LED television, by it is wireless (for example, WiFi,
GPRS, 3G, bluetooth) receive video/audio code stream after, by RTP/RTCP agreements unpack, solve have compressed video/audio code
Stream, then decompressed by H.264 encoding and decoding agreement, video/audio code stream is reverted into normal video/audio signal.Video/audio signal
LED display device (for example, LED display, LED television) is then forwarded to, the control card of LED display device can be by general control
Molding formula, above-mentioned video/audio signal is included in LED display, LED television.
In the above embodiments of the present application, wireless video transmission is based on wireless transmission standards agreement 802.11n, and speed is
300Mbps.And the code check of full HD (1080p) without compression is about 3Gbps, higher than protocol rate.In this application, such as Fig. 3 institutes
Show, by using H.264 encoding and decoding agreement by video image compression to below 100Mbps, and then realize video/audio data
Real-time Transmission, while also can guarantee that LED display device 14 shows continuous, smooth display image；Preferably, UDP can be used
Host-host protocol ensures the real-time Transmission of video/audio code stream.Preferably, can also be using based on the upper-layer protocol on UDP
RTP/RTCP agreements provide flow control and congestion control services.
It should be noted that the application such scheme is dynamically adjusted by using wireless transmission end Rate Control with coding parameter
It is whole to realize QoS feedback controls.Enter Mobile state adjustment bit rate output according to the coded quantization parameter of QoS feedbacks, it is optional in one kind
Implementation method in, wireless transmission end use selective frame losing strategy.Abandoned when network condition is bad unessential frame or
The little frame (for example, control frame) of influence.The retransmission data frame after this discarding.It should be noted that key frame (for example,
The video data of real-time Transmission) can not abandon.
In embodiments of the present invention, by the way of video/audio is wirelessly transferred, received by wireless receiving end and transmitted wirelessly
The video/audio code stream for sending is held, wherein, wireless transmission end is arranged on radio transmission apparatus, and wireless receiving end is arranged at LED and shows
Show in the control card of equipment；Wireless receiving end unpacks 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 code signal；Wireless receiving
End sends video/audio signal to LED display device, so that LED display device shows full HD video according to video/audio signal,
Reached the purpose for being wirelessly transferred video/audio data, it is achieved thereby that in real time, the technology of continuous facile transport video/audio data
Effect, and then solve and connected by the way of wired between LED display device and video source device in the prior art, influence
The technical problem of video/audio transmission quality.
Embodiment 4
According to embodiments of the present invention, there is provided a kind of wireless base station apparatus embodiment is, it is necessary to explanation, the mould of the device
Block can be performed in the such as one group computer system of computer executable instructions, and Fig. 7 is according to embodiments of the present invention one
The schematic diagram of wireless base station apparatus is planted, as shown in fig. 7, the device includes：At acquisition module 70, first processing module 72, second
Reason module 74, the first sending module 76, wherein,
Acquisition module 70, for getting video/audio signal from video source device；First processing module 72, for basis
H.264 video/audio Signal Compression is obtained the first result by encoding and decoding agreement；Second processing module 74, for according to RTP/
Rtcp protocol packs the first result, obtains video/audio code stream；First sending module 76, for sending video/audio code
Stream.
Herein it should be noted that above-mentioned acquisition module 70, first processing module 72, Second processing module 74, first are sent out
Module 76 is sent to correspond to the example that the step S102 in embodiment 2 is realized to step S108, above-mentioned module with corresponding step
It is identical with application scenarios, but it is not limited to the disclosure of that of above-described embodiment 1.It should be noted that above-mentioned module is used as device
A part of can be performed in the such as one group computer system of computer executable instructions.
Embodiment 5
According to embodiments of the present invention, there is provided a kind of radio receiver embodiment is, it is necessary to explanation, the mould of the device
Block can be performed in the such as one group computer system of computer executable instructions, and Fig. 8 is according to embodiments of the present invention one
The schematic diagram of radio receiver is planted, as shown in figure 8, the device includes：Receiver module 80, the 3rd processing module 82, are everywhere
Reason module 84, the second sending module 86, wherein,
Receiver module 80, the video/audio code stream for receiving wireless base station apparatus transmission, wherein, wireless base station apparatus set
It is placed in transmission equipment, radio receiver is arranged in the control card of LED display device；3rd processing module 82, for root
Video/audio code stream is unpacked according to RTP/RTCP agreements, obtains second processing result；Fourth processing module 84, for according to H.264
Encoding and decoding agreement decompresses second processing result, obtains video/audio code signal；Second sending module 86, for sending video/audio
Signal is to LED display device, so that LED display device shows full HD video according to video/audio signal.
Herein it should be noted that above-mentioned receiver module 80, the 3rd processing module 82, fourth processing module 84, second are sent out
Module 86 is sent to correspond to the example that the step S202 in embodiment 3 is realized to step S208, above-mentioned module with corresponding step
It is identical with application scenarios, but it is not limited to the disclosure of that of above-described embodiment 1.It should be noted that above-mentioned module is used as device
A part of can be performed in the such as one group computer system of computer executable instructions.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in certain embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be by other
Mode is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, Ke Yiwei
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces
Connect, can be electrical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be according to the actual needs selected to realize the purpose of this embodiment scheme.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is to realize in the form of SFU software functional unit and as independent production marketing or use
When, can store in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for being contributed to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used to so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
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 exports video/audio signal；
Radio transmission apparatus, are connected with the video source device, for processing the video/audio signal, obtain 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 are 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 are 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 are additionally operable to the video/audio Signal Compression according to H.264 encoding and decoding agreement,
Obtain the first result；
The radio transmission apparatus are additionally operable to that first result is packed according to RTP/RTCP agreements, obtain it is described regard/
Audio code stream.
5. system according to claim 4, it is characterised in that
The wireless receiving end is used to be unpacked the video/audio code stream according to the RTP/RTCP agreements, obtains second processing
As a result；
The wireless receiving end be additionally operable to according to described in H.264 encoding and decoding agreement the second processing result is decompressed, obtain institute
State video/audio signal.
6. system according to claim 5, it is characterised in that
The wireless receiving end is additionally operable to send the video/audio signal to the LED display device, so that the LED shows
Equipment shows the full HD video.
7. a kind of method for being wirelessly transferred video/audio, it is characterised in that including：
Wireless transmission end gets video/audio signal from video source device；
The wireless transmission end, by the video/audio Signal Compression, obtains the first result according to H.264 encoding and decoding agreement；
First result is packed according to RTP/RTCP agreements in the wireless transmission end, obtains video/audio code stream；
The wireless transmission end sends the video/audio code stream.
8. a kind of method for being wirelessly transferred video/audio, it is characterised in that including：
Wireless receiving end receives the video/audio code stream that wireless transmission end sends, wherein, the wireless transmission end is arranged at wireless biography
On transfer device, the wireless receiving end is arranged in the control card of LED display device；
The wireless receiving end unpacks the video/audio code stream according to RTP/RTCP agreements, obtains second processing result；
The wireless receiving end decompresses the second processing result according to H.264 encoding and decoding agreement, obtains the video/audio code
Signal；
The wireless receiving end sends video/audio signal to the LED display device, so that the LED display device is according to institute
State video/audio signal and show full HD video.
9. a kind of wireless base station apparatus, it is characterised in that including：
Acquisition module, for getting video/audio signal from video source device；
First processing module, for, by the video/audio Signal Compression, obtaining the first treatment knot according to H.264 encoding and decoding agreement
Really；
Second processing module, for first result to be packed according to RTP/RTCP agreements, obtains video/audio code stream；
First sending module, for sending the video/audio code stream.
10. a kind of radio receiver, it is characterised in that including：
Receiver module, the video/audio code stream for receiving wireless base station apparatus transmission, wherein, the wireless base station apparatus are set
In in transmission equipment, radio receiver is arranged in the control card of LED display device；
3rd processing module, for unpacking the video/audio code stream according to RTP/RTCP agreements, obtains second processing result；
Fourth processing module, for decompressing the second processing result according to H.264 encoding and decoding agreement, obtains described regarding/sound
Frequency code signal；
Second sending module, for sending video/audio signal to the LED display device so that the LED display device according to
The video/audio signal shows full HD video.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083170A (en) * | 2019-12-31 | 2020-04-28 | 深圳市朗强科技有限公司 | Method and equipment for sending and receiving multimedia data |
| CN111510763A (en) * | 2020-04-10 | 2020-08-07 | 深圳市朗强科技有限公司 | WIFI-based sending and receiving method and device |
| CN111800388A (en) * | 2020-06-09 | 2020-10-20 | 盐城网之易传媒有限公司 | Media information processing method and media information processing device |
| CN112106378A (en) * | 2019-08-05 | 2020-12-18 | 深圳市大疆创新科技有限公司 | Control device, display device and display system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001370A (en) * | 2007-01-15 | 2007-07-18 | 北京华纬讯电信技术有限公司 | Vedio transmission system and method of mixed with mutiple code and decode |
| CN101094358A (en) * | 2007-07-12 | 2007-12-26 | 北京华纬讯电信技术有限公司 | Video transmission system and method based on 1394 collection and HDMI / DVI |
| EP2166747A1 (en) * | 2008-09-23 | 2010-03-24 | Aktiv Management Service S.r.L. | A wireless mobile apparatus for receiving, decoding and retransmitting multistandard digital audio, video and data signals |
| CN106412684A (en) * | 2016-09-13 | 2017-02-15 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | High-definition video wireless transmission method and system |
-
2017
- 2017-02-17 CN CN201710087391.9A patent/CN106878803A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001370A (en) * | 2007-01-15 | 2007-07-18 | 北京华纬讯电信技术有限公司 | Vedio transmission system and method of mixed with mutiple code and decode |
| CN101094358A (en) * | 2007-07-12 | 2007-12-26 | 北京华纬讯电信技术有限公司 | Video transmission system and method based on 1394 collection and HDMI / DVI |
| EP2166747A1 (en) * | 2008-09-23 | 2010-03-24 | Aktiv Management Service S.r.L. | A wireless mobile apparatus for receiving, decoding and retransmitting multistandard digital audio, video and data signals |
| CN106412684A (en) * | 2016-09-13 | 2017-02-15 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | High-definition video wireless transmission method and system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112106378A (en) * | 2019-08-05 | 2020-12-18 | 深圳市大疆创新科技有限公司 | Control device, display device and display system |
| CN111083170A (en) * | 2019-12-31 | 2020-04-28 | 深圳市朗强科技有限公司 | Method and equipment for sending and receiving multimedia data |
| CN111510763A (en) * | 2020-04-10 | 2020-08-07 | 深圳市朗强科技有限公司 | WIFI-based sending and receiving method and device |
| CN111800388A (en) * | 2020-06-09 | 2020-10-20 | 盐城网之易传媒有限公司 | Media information processing method and media information processing device |
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Application publication date: 20170620 |