BS EN 61883-5-2005 Consumer audio video equipment - Digital interface - Part 5 SDL-DVCR data transmission《用户音频 视频设备 数字接口 第5部分 SDL-DVCR数据传输》.pdf

上传人:explodesoak291 文档编号:577915 上传时间:2018-12-13 格式:PDF 页数:14 大小:316.24KB
下载 相关 举报
BS EN 61883-5-2005 Consumer audio video equipment - Digital interface - Part 5 SDL-DVCR data transmission《用户音频 视频设备 数字接口 第5部分 SDL-DVCR数据传输》.pdf_第1页
第1页 / 共14页
BS EN 61883-5-2005 Consumer audio video equipment - Digital interface - Part 5 SDL-DVCR data transmission《用户音频 视频设备 数字接口 第5部分 SDL-DVCR数据传输》.pdf_第2页
第2页 / 共14页
BS EN 61883-5-2005 Consumer audio video equipment - Digital interface - Part 5 SDL-DVCR data transmission《用户音频 视频设备 数字接口 第5部分 SDL-DVCR数据传输》.pdf_第3页
第3页 / 共14页
BS EN 61883-5-2005 Consumer audio video equipment - Digital interface - Part 5 SDL-DVCR data transmission《用户音频 视频设备 数字接口 第5部分 SDL-DVCR数据传输》.pdf_第4页
第4页 / 共14页
BS EN 61883-5-2005 Consumer audio video equipment - Digital interface - Part 5 SDL-DVCR data transmission《用户音频 视频设备 数字接口 第5部分 SDL-DVCR数据传输》.pdf_第5页
第5页 / 共14页
亲,该文档总共14页,到这儿已超出免费预览范围,如果喜欢就下载吧!
资源描述

1、BRITISH STANDARDBS EN 61883-5:2005Consumer audio/video equipment Digital interface Part 5: SDL-DVCR data transmissionThe European Standard EN 61883-5:2005 has the status of a British StandardICS 35.200; 33.160.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g4

2、4g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSIBS EN 61883-5:2005This British Standard was published under the authority of the Standards Policy

3、 and Strategy Committee on 30 January 2006 BSI 30 January 2006ISBN 0 580 47580 8National forewordThis British Standard is the official English language version of EN 61883-5:2005. It is identical with IEC 61883-5:2004. It supersedesBS EN 61883-5:1998 which will be withdrawn on 1 November 2008.The UK

4、 participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implemen

5、t international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does no

6、t purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European co

7、mmittee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10,

8、an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD

9、EN 61883-5 NORME EUROPENNE EUROPISCHE NORM November 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All righ

10、ts of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61883-5:2005 E ICS 35.200; 33.160.01 Supersedes EN 61883-5:1998English version Consumer audio/video equipment - Digital interface Part 5: SDL-DVCR data transmission (IEC 61883-5:2004) Matriel audio/vi

11、do grand public - Interface numrique Partie 5: Transmission de donnes SDL-DVCR (CEI 61883-5:2004) Audio/Video-Gerte der Unterhaltungselektronik - Digitale Schnittstelle Teil 5: SDL-DVCR-Datenbertragung (IEC 61883-5:2004) This European Standard was approved by CENELEC on 2005-11-01. CENELEC members a

12、re bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to

13、 the Central Secretariat or to any CENELEC member. This European Standard exists in two official versions (English, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same sta

14、tus as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, S

15、lovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 Foreword The text of the International Standard IEC 61883-5:2004, prepared by technical area 4, Digital system interfaces and protocols, of

16、IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the formal vote and was approved by CENELEC as EN 61883-5 on 2005-11-01. This European Standard supersedes EN 61883-5:1998. It contains the following significant technical changes with respect to EN 61883-5:1998: added s

17、pecifications of IEEE 1394 packet, CIP header and transmission timing in high speed transmission. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-11-01 latest date by whi

18、ch the national standards conflicting with the EN have to be withdrawn (dow) 2008-11-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61883-5:2004 was approved by CENELEC as a European Standard without any modification. In the official version, f

19、or Bibliography, the following note has to be added for the standard indicated: IEC 61834-1 NOTE Harmonized as EN 61834-1:1998 (not modified). EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 CONSUMER AUDIO/VIDEO EQUIPMENT DIGITAL INTERFACE

20、 Part 5: SDL-DVCR data transmission 1 Scope This part of IEC 61883 specifies the packet format and the transmission timing for SDL-DVCR data. It describes the specifications for the IEEE 1394 packet, the CIP header for SDL525-60 and SDL625-50 systems, and the transmission timing. 2 Normative referen

21、ces The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61834-6, Recording Helical-scan digital v

22、ideo cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) Part 6: SDL format IEC 61883-1, Consumer audio/video equipment Digital interface Part 1: General IEC 61883-2, Consumer audio/video equipment Digital interface Part 2: SD-DVCR dat

23、a transmission 3 Abbreviations For the purposes of this document, the following abbreviations apply: IEEE 1394 packet: IEEE 1394 isochronous packet defined in IEC 61883-1 SDL525-60 system: the standard definition for high-compression mode 525-line system with a frame frequency of 29,97 Hz SDL625-50

24、system: the standard definition for high-compression mode 625-line system with a frame frequency of 25,00 Hz SDL-DVCR: the standard definition for high-compression mode digital video cassette recorder 4 Construction of IEEE 1394 packet 4.1 Source packet structure of the SDL-DVCR data stream For the

25、SDL-DVCR data stream, the data structure for the digital interface defined in IEC 61834-6, Clause 10 is used. The source packet size for the SDL-DVCR data stream is 240 bytes, divided into 3 DIF blocks. The correspondence between DIF blocks and source packets for the SDL525-60 system and the SDL625-

26、50 system are shown in Figure 1 and Figure 2 respectively. EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4 4.2 Packetization of source packet of the SDL-DVCR data stream A source packet shall not be divided and shall be equal to a data blo

27、ck. Data blocks transmitted in an IEEE 1394 isochronous cycle shall be determined according to the TR value in the CIP header (see 5.2). An empty packet is placed in any cycle with no data block. Where the TR value is 002(1x), one or no data block is transmitted; 012(2x), two or no data block are tr

28、ansmitted; 102(4x), four or no data block are transmitted. The SYT field of the CIP header (see 5.1) is used to synchronize transmitter and receiver. 4.3 Transmission order of video frames for high-speed transmission The transmission order of data within one video frame is defined in Figure 1 and Fi

29、gure 2. For high-speed transmission, transmission order of each video frame data shall follow the time sequence. 5 CIP header 5.1 CIP header for SDL-DVCR data stream The structure of the CIP header for the SDL-DVCR data stream is the same as the structure of the CIP header for the SD-DVCR data strea

30、m (see IEC 61883-2, 5.1). The DBS for SDL takes different values from that for SD through the difference of data block size as given in 4.1. 5.2 FDF area The STYPE takes different values as shown in Table 1 of IEC 61883-2. Where the STYPE is 000012, TR is defined as follows. TR: 012= 2x 102= 4x 112=

31、 Reserved for future definition 5.3 DBC values Increments of DBC value shall be determined according to the TR value. Where the TR value is 002(1x), the DBC value increments with 1; 012(2x), the DBC value is a multiple of 2; 102(4x), the DBC value is a multiple of 4. EN 61883-5:2005Licensed Copy: Wa

32、ng Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 5.4 CIP header for the SDL525-60 system For the SDL525-60 system, the values of the CIP header components are as follows. DBS: 001111002FN: 002QPC: 0002SPH: 0 DBC (see 5.3) FMT: 000000250/60: 0 STYPE: 000012TR: 002= 1x, 012

33、= 2x, 102= 4x 5.5 CIP header for the SDL625-50 system For the SDL625-50 system, the values of the CIP header components are as follows. DBS: 001111002FN: 002QPC: 0002SPH: 0 DBC (see 5.3) FMT: 000000250/60: 1 STYPE: 000012TR: 002= 1x, 012= 2x, 102= 4x 5.6 Transmission timing The transmitter shall tra

34、nsmit a time stamp value in the SYT field once every video frame period. The time stamp should be transmitted in a packet that meets the following conditions: packet_arrival_time_L time stamp value time stamp value transmission_delay_limit packet_arrival_time_F where packet_arrival_time_F is the cyc

35、le time when the first bit of the packet which has the time stamp has arrived at the receiver; packet_arrival_time_L is the cycle time when the last bit of the packet which has the time stamp has arrived at the receiver; transmission_delay_limit = 450 s. In case of Hx (H = 1,2,4) transmission, KH da

36、ta blocks are transmitted in a video frame period M using K isochronous packets. Isochronous packet n contains H data blocks of nH, nH+1, . and (n+1) H1. EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 6 The isochronous packet n of a video f

37、rame period M should be transmitted on the following conditions (n = 0, . , K1): packet_arrival_time_L nominal timing for isochronous packet n nominal timing for isochronous packet n transmission_delay_limit packet_arrival_time_F where packet_arrival_time_F is the cycle time when the first bit of th

38、e isochronous packet n has arrived at the receiver; packet_arrival_time_L is the cycle time when the last bit of the isochronous packet n has arrived at the receiver; K is the number of isochronous packets without empty packets in a video frame period. K = 250 (SDL525-60 system) K = 300 (SDL625-50 s

39、ystem) Nominal timing for isochronous packet n = TM + (TM+1 TM) x n/K. TMis the time stamp for video frame period M transmitted in the SYT field. EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 7 Figure 1 Source packets of SDL-DVCR SDL525-60

40、 system 248 A0V0V1V2V3V4V128V127V126V123V124V125Source packetsV129V130V131V134V132V133249 H0 SC0 SC1VA0 VA1 VA2200 201 DIF Sequence 4 98 V129V130V131V134V132V13399 H0 SC0 SC1VA0 VA1 VA250 51 DIF Sequence 148 V129V130V131V134V132V133 49 23DIF Sequence 0H0 SC0 SC1VA0 VA1 VA20146 47 H 0: Header DIF blo

41、ckSC i: Subcode DIF block (i = 0,1)VA i : VAUX DIF block i (i = 0,1,2)A i : Audio DIF block i (i = 0,.,8)V i : Video DIF block i(i = 0,.,134)iKey: IEC 1216/04 EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 8 Figure 2 Source packets of SDL-D

42、VCR SDL625-50 system Source packets298 A0V0V1V2V3V4V128V127V126V123V124V125V129V130V131V134V132V133299 H0 SC0 SC1VA0 VA1 VA2250 251 DIF Sequence 5 98 V129V130V131V134V132V13399 H0 SC0 SC1VA0 VA1 VA250 51 DIF Sequence 148 V129V130V131V134V132V133 49 23DIF Sequence 0H0 SC0 SC1VA0 VA1 VA20146 47 H0: He

43、ader DIF blockSC i : Subcode DIF block (i = 0,1)VA i : VAUX DIF block i (i = 0,1,2)A i : Audio DIF block i (i = 0,.,8)V i : Video DIF block i(i = 0,.,134)iKey: IEC 1217/04 EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 9 Bibliography The fo

44、llowing document contains additional information related to this standard: 1 IEC 61834-1, Recording Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) Part 1: General specifications _ EN 61883-5:2005Licensed

45、 Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 10 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For

46、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication

47、Year Title EN/HD Year IEC 61834-6 - 1)Recording - Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) Part 6: SDL format EN 61834-6 2000 2)IEC 61883-1 - 1)Consumer audio/video equipment - Digital interface Pa

48、rt 1: General EN 61883-1 2003 2)IEC 61883-2 - 1)Part 2: SD-DVCR data transmission EN 61883-2 2005 2)1)Undated reference. 2)Valid edition at date of issue. EN 61883-5:2005Licensed Copy: Wang Bin, na, Thu Jun 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSIblankLicensed Copy: Wang Bin, na, Thu J

49、un 21 01:43:41 GMT+00:00 2007, Uncontrolled Copy, (c) BSIBS EN 61883-5:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the la

展开阅读全文
相关资源
  • BS EN 61883-4-2005 Consumer audio video equipment - Digital interface - Part 4 MPEG2-TS data transmission《用户音频 视频设备 数字接口 第4部分 MPEG2-TS数据传输》.pdfBS EN 61883-4-2005 Consumer audio video equipment - Digital interface - Part 4 MPEG2-TS data transmission《用户音频 视频设备 数字接口 第4部分 MPEG2-TS数据传输》.pdf
  • BS EN 62087-5-2016 Audio video and related equipment Determination of power consumption Set top boxes (STB)《音频 视频和相关设备 功耗的测定 机顶盒(STB)》.pdfBS EN 62087-5-2016 Audio video and related equipment Determination of power consumption Set top boxes (STB)《音频 视频和相关设备 功耗的测定 机顶盒(STB)》.pdf
  • BS EN 62087-6-2015 Audio video and related equipment Determination of power consumption Audio equipment《音频 视频和相关设备 功耗的测定 音频设备》.pdfBS EN 62087-6-2015 Audio video and related equipment Determination of power consumption Audio equipment《音频 视频和相关设备 功耗的测定 音频设备》.pdf
  • BS EN 50514-2008 Audio video and information technology equipment - Routine electrical safety testing in production《音频 视频和信息技术设备 生产过程中的常规电气安全测试》.pdfBS EN 50514-2008 Audio video and information technology equipment - Routine electrical safety testing in production《音频 视频和信息技术设备 生产过程中的常规电气安全测试》.pdf
  • BS EN 61883-6-2014 Consumer audio video equipment Digital interface Audio and music data transmission protocol《用户音频 视频设备 数字接口 音频和音乐数据传输协议》.pdfBS EN 61883-6-2014 Consumer audio video equipment Digital interface Audio and music data transmission protocol《用户音频 视频设备 数字接口 音频和音乐数据传输协议》.pdf
  • BS EN 61883-7-2003 Consumer audio video equipment - Digital interface - Transmission of ITU-R BO 1294 System B《用户音频 视频设备 数字接口 ITU-R BO 1294系统B传输》.pdfBS EN 61883-7-2003 Consumer audio video equipment - Digital interface - Transmission of ITU-R BO 1294 System B《用户音频 视频设备 数字接口 ITU-R BO 1294系统B传输》.pdf
  • BS EN 61883-1-2009 Consumer audio video equipment Digital interface General《消费性音频 视频设备 数字接口 概述》.pdfBS EN 61883-1-2009 Consumer audio video equipment Digital interface General《消费性音频 视频设备 数字接口 概述》.pdf
  • BS EN 61883-2-2005 Consumer audio video equipment - Digital interface - Part 2 SD-DVCR data transmission《用户音频 视频设备 数字接口 第2部分 SD-DVCR数据传输》.pdfBS EN 61883-2-2005 Consumer audio video equipment - Digital interface - Part 2 SD-DVCR data transmission《用户音频 视频设备 数字接口 第2部分 SD-DVCR数据传输》.pdf
  • BS EN 61883-3-2005 Consumer audio video equipment - Digital interface - Part 3 HD-DVCR data transmission《用户音频 视频设备 数字接口 第3部分 HD-DVCR数据传输》.pdfBS EN 61883-3-2005 Consumer audio video equipment - Digital interface - Part 3 HD-DVCR data transmission《用户音频 视频设备 数字接口 第3部分 HD-DVCR数据传输》.pdf
  • 猜你喜欢
  • ASTM B171 B171M-2009a Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器、冷凝器及热交换器用铜合金中厚板和薄板标准规格》.pdf ASTM B171 B171M-2009a Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器、冷凝器及热交换器用铜合金中厚板和薄板标准规格》.pdf
  • ASTM B171 B171M-2011 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器 冷凝器和热交换器用铜合金厚板材及薄板材的标准规格》.pdf ASTM B171 B171M-2011 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器 冷凝器和热交换器用铜合金厚板材及薄板材的标准规格》.pdf
  • ASTM B171 B171M-2011e1 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器 冷凝器和热交换器用铜合金厚板材及薄板材的标准规格》.pdf ASTM B171 B171M-2011e1 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器 冷凝器和热交换器用铜合金厚板材及薄板材的标准规格》.pdf
  • ASTM B171 B171M-2012 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器、冷凝器和热交换器用铜合金板材及片材的标准规格》.pdf ASTM B171 B171M-2012 Standard Specification for Copper-Alloy Plate and Sheet for Pressure Vessels Condensers and Heat Exchangers《压力容器、冷凝器和热交换器用铜合金板材及片材的标准规格》.pdf
  • ASTM B172-2001a(2007)e1 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线标准规范》.pdf ASTM B172-2001a(2007)e1 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线标准规范》.pdf
  • ASTM B172-2010 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线标准规范》.pdf ASTM B172-2010 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线标准规范》.pdf
  • ASTM B172-2010(2015) Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线的标准规格》.pdf ASTM B172-2010(2015) Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线的标准规格》.pdf
  • ASTM B172-2017 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线的标准规格》.pdf ASTM B172-2017 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Members for Electrical Conductors《电导线用成束绞绳铜导线的标准规格》.pdf
  • ASTM B173-2001a(2007)e1 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members for Electrical Conductors《电导线用同芯绞绳铜导线标准规范》.pdf ASTM B173-2001a(2007)e1 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Concentric-Stranded Members for Electrical Conductors《电导线用同芯绞绳铜导线标准规范》.pdf
  • 相关搜索

    当前位置:首页 > 标准规范 > 国际标准 > BS

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1