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1、BRITISH STANDARD BS EN 61834-5:1998 IEC 61834-5: 1998 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 5: The character information system The European Standard EN 61834-5:1998 has the statu
2、s of a British Standard ICS 33.160.40 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61834-5:1998 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the author
3、ity of the Standards Committee and comes into effect on 15 December 1998 BSI 06-1999 ISBN 0 580 30868 5 National foreword This British Standard is the English language version of EN 61834-5:1998. It is identical with IEC 61834-5:1998. The UK participation in its preparation was entrusted by Technica
4、l Committee EPL/100, Audio, video and multimedia systems and equipment, to Subcommittee EPL/100/2, Recording, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for chang
5、e, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to
6、 the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC standards norma
7、lly include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International
8、 Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British
9、Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 46, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have
10、 had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61834-5:1998 BSI 06-1999i C
11、ontents Page National forewordInside front cover Foreword2 Text of EN 61834-55 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BS
12、I EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61834-5 October 1998 ICS 33.160.40 Descriptors: Video equipment, digital technics, magnetoscopes, video recording, sound recording, cassettes for magnetic tapes, magnetic tapes, recording characteristics, data processing, data, organisation of d
13、ata, character sets English version 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 5: The character information system (IEC 61834-5:1998) Enregistrement Systme de magntoscope numrique cass
14、ette balayage hlicodal utilisant la bande magntique de 6,35 mm, destin au grand public (systmes 525-60, 625-50, 1125-60 et 1250-50) Partie 5: Structures des jeux de caractres (CEI 61834-5:1998) Aufzeichnung Videokassettensystem mit digitaler Schrgspuraufzeichnung auf Magnetband 6,35 mm fr den Heimge
15、brauch (Systeme 525-60, 625-50, 1125-60 und 1250-50) Teil 5: Das Schriftzeichen- Informationssystem (IEC 61834-5:1998) This European Standard was approved by CENELEC on 1998-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving
16、 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 the Central Secretariat or to any CENELEC member. This European Standard exists in three official ver
17、sions (English, 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 o
18、f Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotech
19、nique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61834-5:1998 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov
20、11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61834-5:1998 BSI 06-1999 2 Foreword The text of document 100B/167/FDIS, future edition 1 of IEC 61834-5, prepared by SC 100B, Recording, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parall
21、el vote and was approved by CENELEC as EN 61834-5 on 1998-10-01. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard
22、 IEC 61834-5:1998 was approved by CENELEC as a European Standard without any modification. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1999-07-01 latest date by which the national standards conflicting wi
23、th the EN have to be withdrawn(dow) 2001-07-01 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61834-5:1998 BSI 06-19993 Contents Page Foreword2 1General5 1.1Scope5 1.2Normative reference5 1.3Definitions, symbols and abbreviations5 2Data
24、structure of the character information system5 2.1Topic6 2.2Topic unit6 2.3Page unit6 2.4Topic header, page header6 2.5Text unit and text data6 3Packs for the character information system6 3.1TOPIC/PAGE HEADER pack6 3.2TEXT HEADER packs and TEXT packs6 3.3Packs for positioning data7 3.4TEXT flag7 4F
25、ull mode7 4.1Main topics and optional topics7 4.2Menu topic8 4.3TOC topic8 5Simple mode8 6Presentation8 6.1Displaying area8 6.2Display mode9 6.3Character space9 6.4Display format and character size9 6.5Active position9 7Coding9 7.1The structure of the 8-bit code9 7.2Control codes10 7.3Code extension
26、 techniques10 7.4Coding of DRCS data11 7.5Coding of DCS data12 Annex ZA (normative) Normative references to international publications with their corresponding European publicationsInside back cover Figure 1 Data structure of the character information system13 Figure 2 Topic unit and page unit14 Fig
27、ure 3 Packs concerning text16 Figure 4 Position data in TOC topic17 Page Figure 5 Example of TITLE TEXT HEADER pack in MIC18 Figure 6 Example of a menu topic19 Figure 7 Example of pre-recorded tape22 Figure 8 Display image of a TOC23 Figure 9 Example of TOC topic24 Figure 10 Example of pre-recorded
28、tape in simple mode27 Figure 11 Example of users tape in simple mode28 Figure 12 Unit screen and displaying area28 Figure 13 Standard density30 Figure 14 High density31 Figure 15 Code table32 Figure 16 Active position control codes37 Figure 17 Code extension method using escape sequence38 Figure 18
29、Data structure of DRCS data on tape40 Figure 19 LPS = 73h42 Figure 20 LPS = 78h42 Figure 21 LPS = 6Bh42 Figure 22 LPS = 33h43 Figure 23 LPS = 38h43 Figure 24 LPS = 31h44 Figure 25 LPS = 30h44 Figure 26 LPS = 32h45 Figure 27 Data structure of DCS data on tape45 Figure 28 Example of a character inform
30、ation using DCS data46 Table 1 Pack header table15 Table 2 Display modes16 Table 3 Display formats28 Table 4 Character size29 Table 5 C0 control codes except for LS0, LS1, SS2, SS333 Table 6 C1 control code34 Table 7 Designation codes39 Table 8 Invocation codes39 Table 9 OPN-change codes39 Table 10
31、Final byte for DRCS41 Table 11 Type of LPS41 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61834-5:1998 BSI 06-19995 1 Ge
32、neral 1.1 Scope This part of IEC 61834 specifies the character information system which is applicable to the whole recording system of the helical-scan digital video cassette using 6,35 mm magnetic tape. This system provides the method of recording characters in many languages and moreover provides
33、easy operation for users. 1.2 Normative reference The following standard contains provisions which, through reference in this text, constitutes provisions of this part of IEC 61834. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agr
34、eements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard listed below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO/IEC 2022:1994, Information technology Character code
35、structure and extension techniques. 1.3 Definitions, symbols and abbreviations For the purpose of this International Standard, the following definitions or abbreviations apply. 2 Data structure of the character information system Character information data are recorded in the optional area of AAUX,
36、VAUX, Subcode and MIC in the form of the pack structure. Figure 1 shows the character information system. Data structure of the full mode: Data structure of the simple mode: DCS:Downloaded character set DJCS:Downloaded Japanese character set DRCS: Dynamically redefinable character set LPS:Logical pi
37、xel structure OPN:Option number PD:Pattern data TRM:Transmission mode Topic= topic unit 1 Topic unit = topic header + position data m + page unit n Page unit = page header + text unit group = page header + text unit k Text unit= text header + text data where m = 1 for TOC topic, m = 0 for other topi
38、cs n = 1, 2, 3 k = 1, 2, 3 l = 1, 2, 3 Text unit group = text unit j Text unit= text header + text data where j = 1, 2, 3 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 13:03:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61834-5:1998 6 BSI 06-1999 2.1 Topic The full mode consists of many
39、topics which are selected by a producer. Each topic has only one topic unit. 2.2 Topic unit Each kind of topic unit has different contents. Each topic unit except for a TOC topic consists of a topic header and some page units. For the TOC topic, there is position data between the topic header and pa
40、ge unit 1. 2.3 Page unit Each page unit consists of a page header and a text unit group. A text unit group has several text units. There are four display modes per a page which is described in Table 2. Therefore, the maximum amount of character data in a page unit is limited to the number of charact
41、ers which can be displayed at one time. 2.4 Topic header, page header For both the topic and page header, the TOPIC/PAGE HEADER pack in the CONTROL group (pack header = 07h) shall be used. The first two bytes in the four-byte pack data of the TOPIC/PAGE HEADER pack are the topic header part and the
42、latter two bytes are the page header part. In the topic header part, there is a TOPIC TAG. A topic whose TOPIC TAG = 01h is a TOC topic which requires position data. In the page header part, there is a PU No. (page unit number) as shown in Figure 2. For a TOC topic, the PU No. shall be increased one
43、 by one from 00h, and from 01h for other topics. The details of the TOPIC/PAGE HEADER pack are explained in part 4. Figure 2a shows a topic unit for a TOC. The first TOPIC/PAGE HEADER pack refers to the topic header. Its TOPIC TAG is 01h and its PU No. is 00h. Subsequent data are position data which
44、 indicate the start positions of the title, chapter, part and so on which are selected by a producer. The subsequent TOPIC/PAGE HEADER pack is the page header. Its TOPIC TAG is 01h and PU No. is 01h. The first two bytes in the four-byte pack data of TOPIC/PAGE HEADER packs within a topic have the sa
45、me contents for the benefit of verification. Subsequent data is the text unit group which includes text data to display. Figure 2b shows a topic unit which is not a TOC and does not require a position data. Therefore, the first TOPIC/PAGE HEADER pack consists of the topic header and the first page h
46、eader. Its TOPIC TAG is not 01h and its PU No. is 01h. Figure 2c shows a page unit and a text unit group. A page unit consists of a page header and a text unit group which has several text units. 2.5 Text unit and text data A text unit consists of a text header and text data. For tape, text data is
47、formed by a TEXT HEADER pack and TEXT packs which adopt a fixed length pack structure as shown in Figure 2c. For the MIC, text data includes a TEXT HEADER pack which adopts a variable length pack structure as shown in Figure 3. Text data shall be stored in text units as character codes. 3 Packs for
48、the character information system Some packs are prepared to provide character information. 3.1 TOPIC/PAGE HEADER pack This is defined in the CONTROL group and the pack header is 07h. 3.2 TEXT HEADER packs and TEXT packs There are eight kinds of TEXT HEADER packs and nine kinds of TEXT packs as shown
49、 in Figure 3 and Table 1. Each TEXT HEADER pack shall be used with the TEXT pack of the same group, when text data is recorded on tape. Since each group has its own TEXT HEADER pack and TEXT pack, the type of written text data is obvious. For instance, the title text, chapter text and part text may exist in the same VAUX optional area in the same video frame for pre-recorded tape. The most significant four bits of the pack header can separate the text