Video transmission system with physical layer retransmission and real-time transmission functions
A video transmission system and real-time transmission technology, applied in the field of communication, can solve the problem of lack of low-latency and high-reliability video data, and achieve the effect of high real-time video timing control signals
Active Publication Date: 2022-06-03
NOREL SYST
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Problems solved by technology
[0005] At present, there is a lack of a method that can not only transmit low-latency and high-reliability video data, but also transmit high-real-time video timing control signals at the physical layer.
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[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
[0043] like figure 1 As shown, in an application embodiment of a video transmission system with physical layer retransmission and real-time transmission functions of the present invention, the data transmission system includes a first transmission terminal 1, a second transmission terminal 2, and a transmission channel 3, The first transmission terminal 1 sends the downlink data packet to the second transmission terminal 2 through the transmission channel 3 , and the s...
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The invention discloses a video transmission system with physical layer retransmission and real-time transmission functions. The video transmission system comprises a first transmission terminal, a second transmission terminal and a transmission channel. The first transmission terminal comprises a sending memory, the first transmission terminal stores a retransmittable data packet into the sending memory and sends the retransmittable data packet to the second transmission terminal, the retransmittable data packet comprises a serial number, and the second transmission terminal judges the abnormal state of the received retransmittable data packet and sends the retransmittable data packet to the second transmission terminal. And retransmission control information is generated and sent according to the judgment result, the retransmission control information comprises the serial number of the retransmittable data packet, and the first transmission terminal retransmits the retransmittable data packet to the second transmission terminal according to the retransmission control information. The first transmission terminal further sends a real-time data packet to the second transmission terminal, the real-time data packet is used for transmitting the video time sequence control signal, the second transmission terminal receives the real-time data packet sent by the first transmission terminal, and no matter whether the received real-time data packet is correct or not, retransmission control information is not generated.
Description
technical field [0001] The invention relates to the technical field of communications, in particular to a video transmission system with physical layer retransmission and real-time transmission functions. Background technique [0002] In data transmission protocols, retransmission is a common method used to ensure the reliability of data transmission, such as the TCP protocol. In a protocol that supports retransmission, the real-time nature of data transmission cannot be guaranteed because the time when the data arrives safely from the sender to the receiver is uncertain. To improve the real-time performance of data transmission, the retransmission mechanism cannot be used to ensure the reliability of data transmission, such as the UDP protocol. [0003] Both the TCP protocol and the UDP protocol are transport layer protocols. Compared with the implementation of retransmission mechanism in upper-layer protocols such as the transport layer, implementing retransmission in th...
Claims
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IPC IPC(8): H04L1/18H04L1/00H04L69/22H04N7/18H04N5/06
CPCH04L1/1809H04L1/0061H04L69/22H04N7/18H04N5/06H04N21/6375
Inventor 梁科王元龙
Owner NOREL SYST