SIST EN 300 231 V1.3.1:2003

SLOVENSKI STANDARD
SIST EN 300 231 V1.3.1:2003
01-december-2003
7HOHYL]LMVNLVLVWHPL±6SHFLILNDFLMDGRPDþHJDYLGHRVLVWHPD]DXSUDYOMDQMHL]ELUH
SURJUDPRY3'&
Television systems; Specification of the domestic video Programme Delivery Control
system (PDC)
Ta slovenski standard je istoveten z: EN 300 231 Version 1.3.1
ICS:
33.160.40 Video sistemi Video systems
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
SIST EN 300 231 V1.3.1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 231 V1.3.1:2003

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SIST EN 300 231 V1.3.1:2003

ETSI EN 300 231 V1.3.1 (2003-04)
European Standard (Telecommunications series)


Television systems;
Specification of the domestic video
Programme Delivery Control system (PDC)


European Broadcasting Union Union Européenne de Radio-Télévision
EBU·UER

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SIST EN 300 231 V1.3.1:2003
 2 ETSI EN 300 231 V1.3.1 (2003-04)



Reference
REN/JTC-PDC-1-R1
Keywords
broadcasting, PDC, teletext, TV, VCR, video
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SIST EN 300 231 V1.3.1:2003
 3 ETSI EN 300 231 V1.3.1 (2003-04)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .6
1 Scope.7
2 References.7
3 Definitions and abbreviations.7
3.1 Definitions.7
3.2 Abbreviations.8
4 Application of the PDC system.9
5 The PDC service.9
6 Programme identification.10
6.1 List of programme identification parameters .10
6.2 Coding of the parameters .12
7 Preselection function for recording equipment .19
7.1 Introduction.19
7.2 Manual entry of PDC programme selection data .19
7.3 Preselection via Teletext .19
7.3.1 Specification of transport method "A".20
7.3.1.1 General.20
7.3.1.2 Presentation elements of programme-preview pages .20
7.3.1.3 Definition of the formats.22
7.3.1.4 Position assignment rules between elements.26
7.3.1.5 Interpretation of a normal Teletext display page transporting data relevant for the preselection of
programmes.27
7.3.2 Specification of transport method "B" .28
7.3.2.1 General.28
7.3.2.2 Presentation elements of programme-preview pages .29
7.3.2.3 Coding of preselection data in extension packets X/26.29
8 Recording-control function .32
8.1 Specification of the recording-control commands.32
8.2 The transport of the recording-control commands .32
8.2.1 Transport via Teletext (EN 300 706) .32
8.2.2 Transport via a dedicated television line.34
8.2.2.1 General.34
8.2.2.2 Transmission format for the dedicated line.34
8.3 Availability and repetition rate of the recording-control commands.36
9 Code of practice for broadcasters.38
9.1 Introduction.38
9.2 PDC in programme schedule planning.38
9.2.1 Programme guide.38
9.2.2 Programme labelling.38
9.2.2.1 Normal programmes.38
9.2.2.2 Non-programme items.39
9.2.2.3 Planned segmentation of a programme .39
9.2.2.4 Anticipated changes to schedule dependent upon future events .39
9.2.2.5 Indicating end-of-transmission.39
9.2.2.6 Network topology changes.39
9.2.2.7 Daylight-saving time-changes.40
9.2.2.8 Time zone.40
9.2.2.9 Special uses of PDC labels.40
ETSI

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SIST EN 300 231 V1.3.1:2003
 4 ETSI EN 300 231 V1.3.1 (2003-04)
9.3 Rescheduled programmes - validity time windows of PIL and PTY labels .40
9.3.1 Modification to programme guides and informing the user.41
9.3.2 Programme labelling.42
9.3.2.1 Programme cancellation.42
9.3.2.2 Programme insertion.42
9.3.2.3 Replacement programme.42
9.4 PDC in programme presentation and operation.42
9.4.1 Transmission schedule.42
9.4.2 Programme labelling.43
9.4.2.1 Planned interruption.44
9.4.2.2 Anticipated changes to schedule .44
9.4.2.3 Other unforeseen events.44
9.5 System installation and evolution.45
9.6 General observations.45
9.6.1 Product information.45
9.6.2 Programme titles.45
9.6.3 User priorities.45
9.6.4 Selected programme list amendment .46
9.6.5 Manual preselection operation.46
Annex A (informative): The use of Unified Date and Time (UDT).47
Annex B (informative): Use of packet 8/30 format 1 in EN 300 706 Teletext .48
Annex C (informative): The use of DIDON III for the transport of the recording control
commands.49
C.1 General.49
C.2 Error protection.50
C.3 Transmission format of programme delivery data group .50
Annex D (informative): Interpretation of services codes at the PDC video recorder .51
Annex E (informative): Some typical sequences of programme labels .53
E.1 Introduction.53
E.2 Data capacity requirement.53
E.3 Examples of programme sequences and the behaviour of VCRs.54
Annex F (informative): Use of "random number" programme labels .74
Annex G (informative): Bibliography.75
History .76

ETSI

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SIST EN 300 231 V1.3.1:2003
 5 ETSI EN 300 231 V1.3.1 (2003-04)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
All published ETSI deliverables shall include information which directs the reader to the above source of information.
Foreword
This European Standard (Telecommunications series) has been produced by Joint Technical Committee (JTC)
Broadcast of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique
(CENELEC) and the European Telecommunications Standards Institute (ETSI).
NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the
specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body
by including in the Memorandum of Understanding also CENELEC, which is responsible for the
standardization of radio and television receivers. The EBU is a professional association of broadcasting
organizations whose work includes the co-ordination of its members' activities in the technical, legal,
programme-making and programme-exchange domains. The EBU has active members in about
60 countries in the European broadcasting area; its headquarters is in Geneva.
European Broadcasting Union
CH-1218 GRAND SACONNEX (Geneva)
Switzerland
Tel: +41 22 717 21 11
Fax: +41 22 717 24 81

National transposition dates
Date of adoption of this EN: 11 April 2003
Date of latest announcement of this EN (doa): 31 July 2003
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2004
Date of withdrawal of any conflicting National Standard (dow): 31 January 2004

ETSI

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SIST EN 300 231 V1.3.1:2003
 6 ETSI EN 300 231 V1.3.1 (2003-04)
Introduction
Programme Delivery Control (PDC) is a data broadcasting system which carries programme-related information for
exploitation by suitably-equipped domestic video recorders. In its simplest application the programmes chosen by the
viewer will be recorded by such recorders in their entirety, even if the transmission time is different from that published
in the programme guide (for example owing to the over-run of a previous programme). More advanced applications
may, for example, permit recording to be suspended and resumed in synchronism with breaks in programme
transmission, such as may occur during a feature film in the event of film breakage.
The PDC system functions may be considered in two parts. Preselection functions deliver information about the
programmes to the domestic recorder; this information may be carried via print media or via Teletext. In the latter case
the user may make his selection of programmes by viewing the Teletext programme guide pages and, by the use of his
remote-control, positions a cursor adjacent to the wanted programme. At the touch of a button he confirms his choice
and the video recorder stores his requirement. If the video recorder does not incorporate full Teletext decoder
functionality, the preselection information has to be keyed in manually, in the more conventional way. The
Recording-control function depends on the establishment of a match between the viewer's preselection and a
programme label transmitted by the broadcaster with each programme, thereby triggering the start and end of the
recording process in synchronism with the actual transmission time of the programme.
The Programme Delivery Control (PDC) system specification is the result of several years of studies by the EBU in
close collaboration with European industry. In accordance with the wishes of the European broadcasters, expressed in
their replies to an EBU enquiry, the preselection and recording control functions of the PDC system have been designed
mainly around the structure of EN 300 706 [2] Teletext. The starting point for the development process was the Video
Programming System (VPS) in Germany.
The system has been designed to be comprehensive in the facilities it offers, and applicable to the whole of Europe. It
will accommodate all future requirements foreseen by the specialists involved, including those deriving from the
expansion of international television services (e.g. direct broadcasting satellite services). Downwards compatibility is
assured with systems already implemented and optional methods are provided for performing particular functions where
the preferred methods are not appropriate.
To assure the long-term flexibility of the PDC system, the specialists recommend that where EN 300 706 [2] Teletext is
in operation new PDC services should provide both the recording control function and the programme preselection
function by means of data carried in extension data packets. For recording control this approach offers the most efficient
use of the resource represented by the vertical blanking interval of the television signal; for preselection it allows the
Teletext editor greater freedom in the layout of Teletext programme guide pages. A further advantage is that all PDC
data are acquired by a common process at the receiver.
Although the transport of preselection data by Teletext extension packets is preferred, it is nevertheless recommend that
all decoders should also be able to process preselection data sent within the displayable Teletext page.
Where no a-priori restriction applies, the preferred method for sending recording control data is in EN 300 706 [2]
Teletext extension data packets of type 8/30 format 2. Other methods nonetheless remain in the present specification;
where these concern services already implemented in certain countries they are considered in the main text, whilst
others are considered in the annexes.
Experience with the services already implemented has highlighted the need for clear operational rules, and a Code of
Practice for Broadcasters has been included to ensure that the intended response is obtained at the receiver. It will also
be necessary to arrange for the orderly introduction of any new features (see note 1) which the system is potentially able
to deliver, or any further enhancements, as they are specified. The specialists therefore plan to continue their
collaboration with industry as the PDC system is implemented and introduced into service.
NOTE 1: Further enhancements are under study.
Considering that broadcasters may not only wish to modify programme schedules at short notice but also are required to
generate and transmit the real-time commands to VCRs it is essential that both operations are under their close control.
NOTE 2: The term "PDC" is used here as a technical description of the system and follows the current ITU-R
terminology. Trade names for services provided within the specification of PDC include VPS, VPT
(Video Programming by Teletext) and Startext.
ETSI

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SIST EN 300 231 V1.3.1:2003
 7 ETSI EN 300 231 V1.3.1 (2003-04)
1 Scope
The present document specifies the Programme Delivery Control (PDC) transmission system. PDC is a data
broadcasting system which carries programme-related information for exploitation by suitably-equipped domestic video
recorders. Not all the features specified need be implemented in a particular service. Some of the data is essential if a
minimum level of functional performance is to be achieved, whilst other data may be provided only by broadcasters
wishing to provide viewers with a higher level of PDC performance. Optional data may be sent at the broadcaster's
discretion.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ETSI ETS 300 250: "Television Systems; Specification of the D2-MAC/Packet system".
[2] ETSI EN 300 706: "Enhanced Teletext Specification".
[3] ETSI TS 101 231: "Television systems; Register of Country and Network Identification (CNI),
Video Programming System (VPS) codes and Application codes for Teletext based systems".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
hexadecimal: number system with base 16. In written form, equivalents of the decimal
Programme Delivery Control (PDC): broadcasting service for domestic use which allows suitably-equipped
recorders to record preselected programmes automatically and completely
NOTE: PDC is made up of two distinct service components, defined as the preselection function and the
recording-control function (see figure 1).
preselection function: recording control of suitably-equipped recorders, this function performs the loading of the
controller memory of the recorder with the information about all programmes required to be recorded
NOTE: The viewer chooses the required programmes from television programme guides then enters the relevant
information into the recorder, for example manually via a keyboard or bar-code reader, or interactively
using a cursor on the display screen.
recording-control function: allows remote control, from a source of transmission, of a recording made by a
receiving equipment capable of preselecting the programme to be recorded
NOTE: Such a function depends on the broadcaster sending a programme label in coded form together with the
programme. In the case where no programme label is transmitted, the recording shall be done under
timer-control.
ETSI

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SIST EN 300 231 V1.3.1:2003
 8 ETSI EN 300 231 V1.3.1 (2003-04)
Method A Row Method B Row
0 0
(Country, Network, Date)
18,25 weather
18,25 weather
18,30 news (VPS 18,29)
18,30 news (18,29)
18,40 sport
18,40 sport
Keyboard
(18,25, 18,29, 18,40)
23 23
Extension
data packet(s)
Menu 26
Country, Network, Date
cursor
MCP 18,25, MCP 18,29, MCP 18,40
position
link
Manual Automatic Automatic
Preselection function
Programme preselection
Video
Compare
PDC recorder
(or switch to
decoder start/stop
timer control)
signals
Recording-control command
Automatic
Timer Automatic
Recording-control function
Dedicated TV line Packet 8/30 format 2
Country, Network, Date & Time
Country, Network, Date & Time
(CNI, PIL.)
(CNI, PIL.)
Method A Method B

Figure 1
Preselection Method A is known as VPT, and it is described in clause 7.3.1. Preselection Method B is known as PDC,
and it is described in clause 7.3.2.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AD Announced Date
AT Announced Time
BSDP Broadcast Service Data Packet
CAF Controlled Access Flag
CNI Country and Network Identification
Hex Hexadecimal
or hex numbers 10 to 15 are replaced by the uppercase letters A to F
INT Interruption code
LCI Label Channel Identifier
LDT Local Date and Time
lsb least significant bit
LTO Local Time Offset
LUF Label Update Flag
MAC Multiplexed Analogue Component
MCP Menu Cursor Position
MI Mode Identifier
MJD Modified Julian Date
msb most significant bit
NI Network Identification
NSPV No Specific PIL Value (PIL defined below)
ETSI

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SIST EN 300 231 V1.3.1:2003
 9 ETSI EN 300 231 V1.3.1 (2003-04)
PCS Programme Control Status
PD Programme Duration
PDC domestic video Programme/Delivery Control system
PIL Programme Identification Label
PRF Prepare-to-Record Flag
PTL Programme Title
PTY Programme Type
PW Protection Word
RI/T Record Inhibit/Terminate
SPL Short Programme Label
TC Timer-control Code
UDT Universal Date and Time
UTC Co-ordinated Universal Time
VCR Video Cassette Recorder
VPS Video Programme System
VPT Video Programming by Teletext
Other abbreviations and specialized terminology is noted where it occurs in the present document.
4 Application of the PDC system
PDC is a data broadcasting system which carries programme-related information for exploitation by suitably-equipped
domestic video recorders. In its simplest application the programmes chosen by the viewer will be recorded by such
recorders in their entirety, even if the transmission time is different from that published in the programme guide (for
example owing to the over-run of a previous programme). More advanced applications may, for example, permit
recording to be suspended and resumed in synchronism with breaks in programme transmission, such as may occur
during a feature film in the event of film breakage.
The PDC system functions may be considered in two parts, Preselection functions and Recording-control functions, see
clause 3.1.
It is recommend that where EN 300 706 [2] Teletext is in operation new PDC services should provide both the
recording control function and the programme preselection function by means of data carried in extension data packets.
Although the transport of preselection data by Teletext extension packets is preferred, it is recommend that all decoders
should also be able to process preselection data sent within the displayable Teletext page.
Where no a-priori restriction applies, the preferred method for sending recording control data is in EN 300 706 [2]
Teletext extension data packets of type 8/30 format 2. Other methods are given in the present document; where these
oth
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