SIST EN 61834-7:2005

SLOVENSKI SIST EN 61834-7:2005

STANDARD
januar 2005
Snemanje - Digitalni videokasetni snemalni sistem z zapisovanjem s
poševnimi sledmi na magnetnem traku, širokem 6,35 mm, za splošno uporabo
(sistemi 525-60, 625-50, 1125-60 in 1250-50) – 7. del: Format EDTV2 (IEC 61834-
7:2001)
(istoveten EN 61834-7:2001)
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 7: EDTV2 format (IEC 61834-7:2001)
ICS 33.160.40 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 61834-7
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2001
ICS 33.160.40
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 7: EDTV2 format
(IEC 61834-7:2001)
Enregistrement - Aufzeichnungstechnik -
Système de magnétoscope numérique à Videokassettensystem mit digitaler
cassette à balayage hélicoïdal utilisant la Schrägspuraufzeichnung auf Magnetband
bande magnétique de 6,35 mm, destiné 6,35 mm für den Heimgebrauch (Systeme
au grand public (systèmes 525-60, 525-60, 625-50, 1125-60, 1250-50)
625-50, 1125-60 et 1250-50) Teil 7: EDTV2-Format
Partie 7: Format EDTV2 (IEC 61834-7:2001)
(CEI 61834-7:2001)
This European Standard was approved by CENELEC on 2001-05-01. CENELEC members are 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 the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (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 of 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
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61834-7:2001 E
Foreword
The text of document 100B/284/FDIS, future edition 1 of IEC 61834-7, prepared by SC 100B,
Recording, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 61834-7 on 2001-05-01.
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) 2002-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-05-01
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 IEC 61834-7:2001 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60461 NOTE: Harmonized as HD 507 S1:1988 (not modified).
IEC 60735 NOTE: Harmonized as EN 60735:1991 (not modified).
IEC 60958 NOTE: Harmonized as EN 60958:1990 (not modified).
__________
- 3 - EN 61834-7:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 61834-1 1998 Recording - Helical-scan digital video EN 61834-1 1998
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
IEC 61834-2 1998 Part 2: SD format for 525-60 and 625-50 EN 61834-2 1998
systems
IEC 61834-4 1998 Part 4: Pack header table and contents EN 61834-4 1998
IEC 61883-1 1998 Consumer audio/video equipment - EN 61883-1 1998
Digital interface
Part 1: General
IEC 61883-2 1998 Part 2: SD-DVCR data transmission EN 61883-2 1998

NORME CEI
INTERNATIONALE IEC
61834-7
INTERNATIONAL
Première édition
STANDARD
First edition
2001-03
Enregistrement – Système de magnétoscope
numérique à cassette à balayage hélicoïdal
utilisant la bande magnétique de 6,35 mm,
destiné au grand public
(systèmes 525-60, 625-50, 1125-60 et 1250-50)
Partie 7:
Format EDTV2
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 7:
EDTV2 format
 IEC 2001 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
M
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61834-7  IEC:2001 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 General. 9
1.1 Scope . 9
1.2 Normative references. 9
1.3 Definitions, symbols and abbreviations . 11
1.4 Environment and test conditions. 11
2 Helical recordings . 11
3 Programme track data arrangement . 11
4 Audio interface. 11
5 Video interface. 11
6 Audio signal processing. 11
7 Video signal processing. 13
7.1 Introduction. 13
7.2 Error correction code. 13
7.3 Randomization pattern . 13
7.4 Video structure. 13
7.5 DCT processing . 15
7.6 Quantization. 15
7.7 Variable length coding (VLC). 15
7.8 Arrangement of a compressed macro block . 15
7.9 Arrangement of a video segment . 15
7.10 Data-sync block and compressed macro block . 15
7.11 Video auxiliary data (VAUX) . 15
7.12 Invalid recording . 17
8 Subcode signal processing. 17
9 System data . 17
10 MIC (memory in cassette). 17
11 Data structure at digital interface . 19
Figure 1 – Block diagram of EDTV2 recording. 19
Figure 2 – Signal amplitudes for EDTV2 recording . 21
Figure 3 – Signal amplitudes in lines 53, 54, 231, 232 and lines 316, 493, 494, 495. 21
Figure 4 – Block diagram of EDTV2 playback. 23
Table 1 – VAUX TR pack . 23

61834-7  IEC:2001 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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 7: EDTV2 format
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of pat
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