Method for transmitting multimedia data by aid of network

Abstract

The invention discloses a transmission method. To overcome the disadvantages that: in the multi-media display system in the prior art, the difference of transmission regions of multi-media data information can inevitably affect the transmission speed of the network to cause the interruption or delay of the playing during the transmission of the data information, as well as the streaming media transmission mode fails to work when the network is disconnected, the invention designs a transmission method that the multimedia information is transmitted by means of the network, a server side uploads the multimedia data information to the network directly in the form of a multimedia compressed file, the multimedia data information is made a compression packing into a data packet through an IP transmission layer of the network TCP / IP protocol and then is sent to a designated client receiving end, the client receiving end makes a one-time download to the multimedia data information and prepares for playing, the data packet is decompressed after the one-time download is finished, and a multimedia player is used to play the multimedia information. The information display mode can allow the client side not to be always connected with the server and reduces the dependency to the network when the multimedia data information is transmitted in the streaming media mode.

Description

[0001] Field [0002] The invention relates to a transmission method of multimedia data information, in particular to a multimedia transmission method by means of network TCP / IP protocol transmission. Background technique [0003] In the prior art, the dissemination of multimedia information has three transmission methods: streaming media transmission, hardware memory card CF transmission and wireless digital transmission. The disadvantage is: when using streaming media to transmit multimedia data information, the user needs to start the data transmission program Delay and buffer storage are used together for multimedia playback, and due to the different regions of the publishing system, the network transmission speed will inevitably be affected, resulting in interruption or delay of playback during data information transmission. When the network is disconnected, streaming media The transmission method cannot work. It can be seen that streaming media transmission is strongly c...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of multimedia distribution systems in the prior art, the hardware storage card CF transmission is only for storing multimedia information, and cannot automatically access and record and broadcast multimedia data information, and in the wireless digital transmission multimedia mode, it is impossible to specify The shortcomings of multimedia data information transmission by single or sub-client division of client or sub-client, and because of the different regions of multimedia data information transmission will inevitably affect the network transmission speed, resulting in playback interruption or delay in the process of data information transmission, when the network When disconnecting, the deficiencies that streaming media transmission mode can't work, the present invention designs a kind of method that realizes multimedia data transmission by means of network, and this method is realized by following steps: 1. set up internet network connection at server end and receiving end, network The protocol is defined as the TCP protocol and the IP protocol. ②The server converts multimedia information, including picture files, video files, audio files and text files, into graphic codes and text codes, compresses them into data packets, and stores them in a fixed memory. , for the central processor to send to the receiving end at any time, and the data packets are compressed into independent data packets in picture format and file format according to their contents. ③Upload the compressed data packets from the server to the network through the TCP transmission control protocol, The TCP protocol stipulates the destination address of the receiving end of the data packet, the serial number of the packet, the check code and the format identifier. The TCP protocol stipulates that a document format identifier will be added before the data packet containing the WORD and TEXT documents, and at the same time, each time Write the transmission end mark at the end of the last data packet in the batch-transmitted multimedia data packet group, ④The network IP protocol will distribute the data packets to the ports designated by each receiving end in a certain order, ⑤The port of the receiving end will receive all The group of compressed multimedia data packets will stop the receiving operation until the data packet with the end identifier is received, and these compressed data packets will be stored in the designated memory respectively, and the data packets with the file format identifier will be stored in the In the special memory, ⑥ the PC processor at the receiving end invokes the decompression file used to decompress the received data packet, and the PC processor stores the decompressed data packet in the corresponding memory according to its different format , ⑦ The PC processor at the receiving end calls the multimedia player software to play the decompressed file on the display, and calls the pre-set WORD document software to read the file with the file format mark and play it on the display

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