1、BRITISH STANDARD BS EN 62375:2004 Video systems (625/50 progressive) Video and accompanied data using the vertical blanking interval Analogue interface The European Standard EN 62375:2004 has the status of a British Standard ICS 33.160.40 BS EN 62375:2004 This British Standard was published under th
2、e authority of the Standards Policy and Strategy Committee on 28 January 2005 BSI 28 January 2005 ISBN 0 580 45326 X National foreword This British Standard is the official English language version of EN 62375:2004. It is identical with IEC 62375:2004. The UK participation in its preparation was ent
3、rusted to Technical Committee EPL/100, Audio, video and multi-media systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publicatio
4、ns 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 not purport to include all the necessar
5、y 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 committee any enquiries on the interpre
6、tation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyri
7、ght notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 62375 NORME EUROPENNE EUROPISCHE NORM October 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normal
8、isation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62375:2004 E ICS 33.160.40 English version V
9、ideo systems (625/50 progressive) Video and accompanied data using the vertical blanking interval - Analogue interface (IEC 62375:2004) Systmes vido (625/50 progressif) - Donnes vido et associes utilisant lintervalle de suppression de trame - Interface analogique (CEI 62375:2004) Videosysteme (625/5
10、0 ohne Zeilensprung) Video und Zusatzdaten in der vertikalen Austastlcke Analoges Interface (IEC 62375:2004) This European Standard was approved by CENELEC on 2004-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro
11、pean 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 the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (Eng
12、lish, French, 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 status as the official versions. CENELEC members are the national electrotechnical committees of Austria,
13、 Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of the Internation
14、al Standard IEC 62375:2004, prepared by IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the formal vote and was approved by CENELEC as EN 62375 on 2004-09-01 without any modification. The following dates were fixed: latest date by which the EN has to be implemented at
15、 national level by publication of an identical national standard or by endorsement (dop) 2005-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-09-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standar
16、d IEC 62375:2004 was approved by CENELEC as a European Standard without any modification. _ Page2 EN62375:2004CONTENTS 1 Scope.4 2 Normative references .4 3 Terms, definitions, symbols and abbreviated terms.4 3.1 Terms and definitions 4 3.2 Symbols and abbreviated terms.4 4 Defined signal 5 5 Constr
17、uction of identification signal 5 5.1 Position.5 5.2 Clock frequency 5 5.3 Signal amplitude6 5.4 Modulation coding .6 5.5 Preamble.6 5.6 Data bits6 6 Information content of data bits 8 6.1 Data group 1, Aspect ratio.8 6.2 Data group 2, reserved9 6.3 Data group 3, subtitles 9 6.3.1 Reserved.9 6.3.2 S
18、ubtitling mode9 6.4 Data group 4, surround sound and CGMS-A10 6.4.1 Surround sound bit 10 6.4.2 CGMS-A information10 Annex A (informative) Rules of operation11 A.1 Receiver display formats .11 A.2 Procedure in absence of identification signal.11 Annex B (informative) Recommendation - Response time o
19、n a change in the received identification signal .12 Annex C (informative) Guideline - CGMS-A information 13 Annex ZA (normative) Normative references to international publications with their corresponding European publications 14 Bibliography15 Page3 EN62375:2004 VIDEO SYSTEMS (625/50 PROGRESSIVE)
20、VIDEO AND ACCOMPANIED DATA USING THE VERTICAL BLANKING INTERVAL ANALOGUE INTERFACE 1 Scope This International Standard specifies the method of transfer of aspect ratio information code, copy control information code and other codes in the vertical blanking interval of the luminance signal. This Inte
21、rnational Standard is applicable to the transfer of video related information with the video signal through the baseband analogue signal of 625-line/50-frame progressive scan video system between digital and analogue video equipments. 2 Normative references The following referenced documents are ind
22、ispensable 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. ITU-R BT.1358: Studio parameters of 625 and 525 line progressive scan television systems 3
23、Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 letterbox picture display format to display a picture with an aspect ratio greater than the screen, in such a way that empty (black) lines a
24、re added to conform to the screen 3.1.2 full format picture display format with full screen size conforming to its scanning format 3.1.3 CGMS-A copy generation management system on analogue video interface, for use in digital video recorders and digital video equipments 3.2 Symbols and abbreviated t
25、erms 0 hfalling sync edge a aspect ratio F Sclock frequency LSB Least Significant Bit MSB Most Significant Bit NRZ Non-Return-to-Zero T ddata bit period T ssampling period Page4 EN62375:2004 4 Defined signal The signal defined in this standard is defined for use with systems complying with ITU-R BT.
26、1358. 5 Construction of identification signal 5.1 Position The identification signal bits shall be transmitted as a data burst in the first part of line 43. The position of the beginning of the bits shall be 5,5 s 0,125 s from 0 hof the horizontal sync, as indicated in Figure 1. This figure is inten
27、ded to illustrate the position of the signalling bits in line 43. In each frame, line 43 shall be occupied with this identification signal. Peak white level Sync. level 500 mV 25 mV 13,7 s b 19,2 s 5,25 s a 5,5 s 0,125 s 0,75 s 0 h IEC 064/04Key a: Period from sync to the start point of the video ef
28、fective area. b: For optimum decoder performance, it is recommended that this period be free from other signals. Figure 1 Position of identification signal bits in line 43 5.2 Clock frequency The clock frequency shall be: F s= 10 MHz 1 kHz The sampling period shall be: T s= 100 ns Page5 EN62375:2004
29、 5.3 Signal amplitude The signal amplitude with respect to maximum video signal amplitude of 700 mV shall be: 500 mV 25 mV 5.4 Modulation coding Bi-phase coding shall be used in accordance with Figure 2. Duration of one data bit: T d+ 1 + 1 1 1 0 T d + 1 + 1 1 1 1 0 0 0 1 1 NRZ-Level Bi-Phase Level
30、1 T s T d IEC 065/04Figure 2 Example of bi-phase-L coding The data bits shall be inserted in bi-phase-L, in which one data bit period equals 2 3 clock periods, whereby T d= 6 T s5.5 Preamble The preamble contains a run-in and a start code. The preamble shall be in accordance with Table 1. 5.6 Data b
31、its There shall be 14 bits in total. 1 out of these 14 bits shall be allocated to the error detection code. There shall be 13 data-bits available for transmission of information. Page6 EN62375:2004 Table 1 Identification signal bits transmission scheme Identification signal bits transmission Inserti
32、on: line 43 Coding: Bi-phase modulation coding Clock: 10 MHz (T s= 100 ns) Run-in Start code Group 1 aspect ratio Group 2 reserved Group 3 subtitles Group 4 others 29 elements based on 10 MHz 24 elements based on 10 MHz 24 elements based on 10 MHz 24 elements based on 10 MHz 18 elements based on 10
33、MHz 18 elements based on 10 MHz bit numbering 0 1 2 3 LSB MSB per info bit (note) “0“ = 000 111 “1“ = 111 000 bit numbering 4 5 6 7 LSB MSB per info bit (note) “0“ = 000 111 “1“ = 111 000 bit numbering 8 9 10 LSB MSB per info bit (note) “0“ = 000 111 “1“ = 111 000 bit numbering 11 12 13 LSB MSB per
34、info bit (note) “0“ = 000 111 “1“ = 111 000 MSB transmitted first MSB transmitted first LSB transmitted first LSB transmitted first LSB transmitted first LSB transmitted first 0 1F1C 71C7 1 1111 0001 1100 0111 0001 1100 0111 MSB LSB 0 1E 3C1F 0001 1110 0011 1100 0001 1111 MSB LSB 0123 bit number 000
35、1 full format 4:3 1000 box 14:9 centre 0100 box 14:9 top 1101 box 16:9 centre 0010 box 16:9 top 1011 box 16:9 centre 0111 full format 4:3 (shoot and protect 14:9 centre) 1110 full format 16:9 (anamorphic) b 3= odd parity bit b 4= reserved set to “0“ b 5= reserved set to “0“ b 6= reserved set to “0“
36、b 7= reserved set to “0“ b 8= reserved set to “0” 9 10 bit number 0 0 no open subtitles 1 0 subtitles in active image area 0 1 subtitles out of active image area 1 1 reserved 11 bit number 0 no surround sound information 1 surround sound mode 12 bit number 0 no copyright asserted or status unknown 1
37、 copy right asserted 13 bit number 0 copying not restricted 1 copying restricted NOTE One information bit consists of 6 elements based on 10 MHz clock. T d= 6T s(see 3.2 and 5.4). Page7 EN62375:2004 6 Information content of data bits The 13 data bits shall be grouped in 4 groups in accordance with T
38、able 1. Group 1 shall contain 4 bits in which the first 3 bits carry data and the last bit shall denote the odd parity bit over the first three data bits. Group 2 shall contain 4 data bits, Group 3 shall contain 3 data bits and Group 4 shall contain 3 data bits. The data bits shall be labelled b 0up
39、 to and including b 2combined with b 4up to and including b 13 . b 3shall be the odd parity bit as shown in Table 1 and 2. The index also indicates the order of transmission: b 0shall be the first transmitted bit. 6.1 Data group 1, Aspect ratio b 0 , b 1 , b 2 : shall denote the aspect ratio label,
40、the letterbox format and position according to Table 2. b 3 : shall denote the odd parity of b 0 , b 1 , b 2 , b 3according to Table 2. Table 2 Aspect ratio label, letterbox and position code b 0 b 1 b 2b 3Aspect ratio label Full format or letterbox Position No. of active lines (Note 1) 0 0 0 1 4:3
41、full format not applicable 576 1 0 0 0 14:9 letterbox centre 504 0 1 0 0 14:9 letterbox top 504 1 1 0 1 16:9 letterbox centre 430 0 0 1 0 16:9 letterbox top 430 1 0 1 1 16:9 letterbox centre not defined 0 1 1 1 14:9 full format (Note 2) centre 576 1 1 1 0 16:9 full format (anamorphic) not applicable
42、 576 NOTE 1 The number of active lines is only an indication for the exact aspect ratio a = 1,33, a = 1,57 and a = 1,78. NOTE 2 The actual transmitted aspect ratio is 4:3, but a 14:9 centre window should contain all the relevant picture content to encourage a wide screen display on a 16:9 television
43、 set. The aspect ratio label indicates a range of possible aspect ratios. All aspect ratios falling in these ranges shall be labelled by the same code. Table 3 indicates the aspect ratio ranges. Table 3 Aspect ratio ranges Aspect ratio label Aspect ratio range Active lines 4:3 a 1,46 527 to 576 14:9
44、 1,46 16:9 a 1,90 405 Page8 EN62375:2004 6.2 Data group 2, reserved b 4 , b 5 , b 6 , b 7 : reserved, set to “0.” 6.3 Data group 3, subtitles 6.3.1 Reserved b 8 : reserved, set to “0.” 6.3.2 Subtitling mode b 9 , b 10 : shall denote the mode of subtitling in accordance with Table 4. Table 4 Subtitli
45、ng mode b 9b 10subtitles in/out of active image area 0 0 no open subtitles 1 0 subtitles in active image area 0 1 subtitles out of active image area 1 1 reserved NOTE The “out of active image area“ subtitling, which extends into the active image area shall be treated as “out of active image area“. F
46、igure 3 indicates the meaning of the terms “in active image area” and “out of active image area.” Possible subtitle Possible subtitle Subtitles in active image area Subtitles out of active image area Letterbox centre Letterbox top Possible subtitle Possible subtitle IEC 066/04Figure 3 Examples of le
47、tter box signals with subtitling Page9 EN62375:2004 6.4 Data group 4, surround sound and CGMS-A 6.4.1 Surround sound bit b 11 : shall denote the surround sound bit in accordance with Table 5. Table 5 Surround sound bit b 11Surround sound bit 0 no surround sound information 1 surround sound mode 6.4.
48、2 CGMS-A information b 12 , b 13 : shall denote the CGMS-A information bit in accordance with Table 6. Table 6 CGMS-A information b 12Copyright bit 0 no copyright asserted or status unknown 1 copyright asserted b 13generation bit 0 copying not restricted 1 copying restricted Page10 EN62375:2004 Anne
49、x A (informative) Rules of operation A.1 Receiver display formats To ensure automatic selection of the most appropriate display mode, the receiver with a 16:9 display should comply with the minimum requirements given in Table A.1. Table A.1 Aspect ratio minimum requirements b 0 b 1 b 2Aspect ratio label Minimum requirements 0 0 0 4:3 case 1 1 0 0 14:9 case 2 0 1 0 14:9 case 2 1 1 0 16:9 case 3 0
