GOST R 55688-2013 Realtime audiovisual information system (RAVIS) Content composer Structure and data transmission protocols《实时视听信息系统 (RAVIS) 内容编排器 结构和数据传输协议》.pdf

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3、.1.2 : , . 3.1.3 : , , . 3.1.4 : , , . 3.1.5 (Distribution and Communication Protocol): , , / - . 3.1.6 : . 3.1.7 ASCII: , , (American Standard Code for Information Interchange, ASCII). 3.1.8 : , . 3.1.9 : ( ) . 3.1.10 MPEG-2 (MPEG-2 Transport Stream): MPEG-2, 1 1. 3.1.11 : . 3.1.12 Ethernet Etherne

4、t network Ethernet: , IEEE 802.3. 3.1.13 TAG- (TAG Value): TAG-. 3.1.14 TAG- (TAG Name): TAG-, . 3.1.15 TAG- (TAG Packet): TAG-, . 3.1.16 TAG- (TAG Item): DCP- , , . 3.1.17 UTF-8 : , , 8- (Unicode Transformation Format, UTF). 3.2 : N N, ( , , 216 42); Nb N, 2. 55688 2013 3 3.3 : 16-QAM 16- QAM; 64-Q

5、AM 64- QAM; ASCII (American Standard Code forInformation Interchange);ASI (Asynchronous Serial Interface);CRC (Cyclic Redundancy Check);CRC-32 32- ;DCP (Distribution and Communication Protocol);FOURCC , (Four Character Code); IP (Internet Protocol);JSON , , 2;QAM - (Quadrature Amplitude Modulation);

6、QPSK (Quadrature Phase Shift Keying);TAG , , (Tag, Length, Value);UDP (User Datagram Protocol);USB - (Universal Serial Bus); UTF-8 8- (Unicode Transformation Format);XML , (eXtensible Markup Language); ; ; TAG- ; ; ; ; ; (30 300 ); ; (RealtimeAudioVisual Information System, RAVIS); ; .4 4.1 4.1.1 ,

7、, (. 1). : (); (); ().4.1.2 . 4.1.3 . 55688 2013 4 1 4.1.4 , , . 4.1.5 , . 4.1.6 , , . 4.1.7 , . , . . 4.1.8 / . . 4.2 4.2.1 : ( -, - ); , ; .4.2.2 : (), , , , (. ) MPEG-2; (); TAG- (). 55688 2013 5 2 4.3 4.3.1 MPEG-2 MPEG-2 , . MPEG-2 . 0 1 TYPE 11b, 3 0b (. 543092011, 5.2). 4.3.2 , (. ). . 0 1 TYPE 11b, 3 1b (. 543092011, 5.2). 4.3.3 , , . 5.2 543092011. . 5 5.1 , . 5.2 : (100, 200 250 ); (QPSK, 16-QAM 64-QAM); (1/2, 2/3 3/4); ; ; .5.3 (. 4.3) , , . 5.4 , , , . , , , , . 5.5 :