IEC 62360:2004

Baseline specifications of satellite and terrestrial receivers for ISDB (Integrated Service for Digital Broadcast)

specifies the basic functions, ratings, and performance of receivers for the Integrated Services Digital Broadcasting (ISDB) system. It applies to: receivers for standard digital television broadcasting, high-definition television broadcasting, and radio broadcasting from satellite broadcasting stations in the frequency band of 11,7 GHz to 12,2 GHz (hereinafter referred to as "BS digital broadcasting"); receivers for standard digital television broadcasting with a bandwidth of 34,5 MHz from satellite broadcasting stations in the frequency band of 12,2 GHz to 12,75 GHz (hereinafter referred to as "broadband CS digital broadcasting"); and receivers for the standard digital television broadcasting and high-definition television broadcasting from terrestrial broadcasting stations (hereinafter referred to as "digital terrestrial television broadcasting").

General Information

• Status: Published
• Publication Date: 22-Mar-2004
• ICS: 33.160.25 - Television receivers
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Start Date: 09-Sep-2008
• Completion Date: 26-Oct-2025

Relations

• Revised: IEC 62360:2008 - Baseline specifications of satellite and terrestrial receivers for ISDB (Integrated Service Digital Broadcasting)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 62360
First edition
2004-03
Baseline specifications of satellite and
terrestrial receivers for ISDB (Integrated
Service for Digital Broadcast)

Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD 62360
First edition
2004-03
Baseline specifications of satellite and
terrestrial receivers for ISDB (Integrated
Service for Digital Broadcast)

 IEC 2004  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale XC
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 62360  IEC:2004(E)
CONTENTS
FOREWORD.5

INTRODUCTION.7

1 Scope.8

2 Normative references.8

3 Abbreviations and symbols .9

4 Configuration of the receiver .10

4.1 General.10
4.2 Satellite receiver.11
4.3 Terrestrial receiver.11
5 Ratings and specifications of the units of the digital satellite broadcasting receiver .12
5.1 General.12
5.2 Satellite receiving antenna.12
5.3 Converter.12
5.4 Coupling cable.13
5.5 Specifications of DIRD .13
6 Ratings and specifications of the receiving units for the digital terrestrial television
broadcasting.16
6.1 Receiving antenna.16
6.2 Specifications of the DIRD.16
6.3 Analogue broadcast receiving function .22
7 Decoding process of video and audio, and those output signals .22
7.1 Video decoding process and output signals .22
7.2 Audio decoding process and output signals .36
7.3 Receiver’s function of hierarchical modulation in digital satellite broadcasting .39
7.4 MP@LL moving picture and still picture of terrestrial digital television
broadcast .39
8 Downloading function.48
8.1 General.48
8.2 Terms and definitions, Service variation .48
8.3 Transmission scheme relevant to downloading .49
8.4 Preferable specifications of the receiver .62

9 Signal processing functions of DIRD.64
9.1 Service information.64
9.2 Identification between broadcasting and non-broadcasting .64
9.3 Number of PIDs to be simultaneously processed .64
9.4 Flow of program selection .64

Annex A (informative) Method of switching the video format .67
Annex B (informative) Mix-down processing in the AAC decoder.74

Bibliography.76

62360  IEC:2004(E) – 3 –
Figure 1 – Basic configuration of the receiver .10

Figure 2 – Basic configuration of DIRD .11

Figure 3 – Directional pattern of the antenna (excerpt from ITU-R recommendation 419-3) . 16

Figure 4 – Receiver block diagram of the 13-segment receiver .18

Figure 5 – Receiver block diagram of the one-segment receiver .20

Figure 6 – Desirable representation formats on monitors with a 4:3 aspect ratio and a

16:9 aspect ratio .33

Figure 7 – Reference drawing .47

Figure 8 – Identification flow of broadcasting/non-broadcasting .65

Figure 9 – Basic flow of program selection.66
Figure A.1 – Conceptual diagram of the timing of the transmitting and receiving sides
that enables SDTV/HDTV completely seamless switching (processing in cases in which
sequence_end_code_flag of video_decode_control_descriptor is 1) .71
Figure A.2 – Conceptual diagram of the timing of the transmitting and receiving sides in
the simplified method of switching SDTV/HDTV (processing in the cases in which
sequence_end_code_flag of video_decode_control_descriptor is 0) .73

Table 1 – Satellite receiving antenna rating .12
Table 2 – Converter rating .12
Table 3 – Coupling cable rating .13
Table 4 – Size of logo data .14
Table 5 – Ratings of the receiving antenna .16
Table 6 – Protection ratios of the 13-segment receiver .17
Table 7 – Size of logo data
Table 8 – Meaning of the code index of the MPEG-2 coding parameters in Tables 10 and 11 . 23
Table 9 – Positions of active lines.23
Table 10 – Constraints of coding parameters 1 (case in which the display screen area is
not specified by sequence_display_extension).24
Table 11 – Constraints of coding parameters 2 (case in which the display-screen area is
specified by sequence_display_extension).25
Table 12 – Relationship between the parameter values of sequence_display_extension
of a stream and video-signal output 1 .27
Table 13 – Relationship between the parameter values of sequence_display_extension

of a stream and the video signal output 2.29
Table 14 – Relationship between the parameter values of sequence_display_extension
of a stream and video signal output 3 .31
Table 15 – 1080i component output .34
Table 16 – 720p component output .34
Table 17 – 480p component output .35
Table 18 – 480i component output .35
Table 19 – NTSC composite output.35
Table 20 – NTSC Y/C output.35
Table 21 – Colorimetric parameters .36
Table 22 – Reference example of signal process at the receiver equipment.38
Table 23 – Relationship between the parameter values of sequence_display_extension
of reduced resolution moving pictures and video output signals (1).40

– 4 – 62360  IEC:2004(E)
Table 24 – Relationship between the parameter values of sequence_display_extension

for reduced resolution moving pictures and video output signals (2).41

Table 25 – Relationship between the parameter values of sequence_display_extension

for reduced resolution moving pictures and video output signals (3).42

Table 26 – Relationship between the parameter values of sequence_display_extension
for still pictures and video output signals (1) .43

Table 27 – Relationship between the parameter values of sequence_display_extension

for still pictures and video output signals (2) .45

Table 28 – Relationship between the parameter values of sequence_display_extension

for still pictures and video output signals (3) .46

Table 29 – Data structure of software download trigger table .50
Table 30 – Version indicator .52
Table 31 – Schedule time-shift information .52
Table 32 – Structure of download content descriptor.53
Table 33 – compatibilityDescriptor format .56
Table 34 – Identification field .57
Table 35 – DII (Download Info Indication Message) format.57
Table 36 – CDT syntax .59
Table 37 – Logo transmission descriptor syntax.61
Table 38 – Logo transmission type.61
Table A.1 – Video-decoding control descriptor .68
Table A.2 – Video encode format .68
Table B.1 – Listening level in 2-channel reproduction device (a = 0,707) .75

62360  IEC:2004(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
BASELINE SPECIFICATIONS OF SATELLITE

AND TERRESTRIAL RECEIVERS FOR ISDB

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62360 has been prepared by Technical Area 1: Digital receiving
equipment of IEC technical committee 100: Audio, video and multimedia systems and
equipment.
The text of this standard is based on the following documents:

FDIS Report on voting
100/667/FDIS 100/769/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 6 – 62360  IEC:2004(E)
The committee has decided that the contents of this publication will remain unchanged until
2008. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or

• amended.
62360  IEC:2004(E) – 7 –
INTRODUCTION
This International Standard is based on, and is the subset of ARIB STD-B21 Version 3.2 which

is established with regard to digital broadcasting receivers. It contains baseline specifications of

receivers for satellite and terrestrial ISDB systems. It does not contain EPG (Electronic Program

Guide), CA (Conditional Access), bi-directional communication function, data decoder function

and high speed digital interface connector specification which were covered by the ARIB

STD-B21.
___________
The Association of Radio Industries and Businesses establishes ARIB standards for the basic technical
requirements such as various radio-equipment specifications for various radio signal utilization systems, with the
participation of broadcasting-equipment manufacturers, broadcasting service providers, radio-equipment
manufacturers, telecommunication companies, and their users.
ARIB standards are private standards established by compiling private and voluntary standards that have been
developed to increase convenience for broadcasting-equipment manufacturers, broadcasting service providers,
radio-equipment manufacturers, telecommunication companies, and their users, such as by ensuring the
appropriate quality of and compatibility between broadcasting and radio facilities. These standards are intended to
be used in conjunction with national technical standards established to ensure the efficient use of available
frequencies and to avoid radio interference between users.
In order to ensure fairness and transparency in the establishment process, the standard was determined by
consensus of all participants in our standard meeting, selected without bias from a broad range of interested
parties – foreign and domestic, firms and individuals – including broadcasting-equipment manufacturers,
broadcasting service providers, radio equipment manufacturers, common carriers, and their users.

– 8 – 62360  IEC:2004(E)
BASELINE SPECIFICATIONS OF SATELLITE

AND TERRESTRIAL RECEIVERS FOR ISDB

1 Scope
This International Standard specifies the basic functions, ratings, and performance of receivers
for the Integrated Services Digital Broadcasting (ISDB) system. It applies to: receivers for

standard digital television broadcasting, high-definition television broadcasting, and radio

broadcasting from satellite broadcasting stations in the frequency band of 11,7 GHz to 12,2 GHz
(hereinafter referred to as “BS digital broadcasting”); receivers for standard digital television
broadcasting with a bandwidth of 34,5 MHz from satellite broadcasting stations in the frequency
band of 12,2 GHz to 12,75 GHz (hereinafter referred to as “broadband CS digital broadcasting”);
and receivers for the standard digital television broadcasting and high-definition television
broadcasting from terrestrial broadcasting stations (hereinafter referred to as “digital terrestrial
television broadcasting”).
With regard to the receiver, it may be designed for receiving only one broadcast service from the
above-mentioned digital broadcasting or for receiving multiple broadcast services. Various
types of receivers for receiving digital terrestrial television broadcasts may be designed, that is,
receivers intended for fixed, for mobile and for portable reception.
This standard defines the BS digital-broadcasting receiver, the dual-purpose receiver for BS
digital broadcasting and broadband CS digital-broadcasting (hereinafter referred to as a “BS
and broadband CS digital broadcasting dual-purpose receiver”), as well as the receiver for
digital terrestrial television broadcasting using an outdoor fixed receiving antenna and with a
large display. For a small-sized simple receiver, a vehicle-mounted receiver, a portable receiver,
and the like, this standard should be applied as far as practical.
In this standard, the BS digital-broadcasting receiver and the BS and broadband CS
digital-broadcasting dual-purpose receiver are generically described as digital satellite
broadcasting receivers.
In addition, when it is necessary to distinguish between the BS digital-broadcasting receiver and
the BS and broadband CS digital-broadcasting dual-purpose receiver, [BS] is additionally used
to specify a BS digital-broadcasting receiver, and [BS • CS] is used likewise to specify a BS and
broadband CS digital-broadcasting dual-purpose receiver.
2 Normative references
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.
ISO/IEC 13818-1, Information technology – Generic coding of moving pictures and associated
audio information: Systems
ISO/IEC 13818-2, Information technology – Generic coding of moving pictures and associated
audio information: Video
ISO/IEC 13818-7, Information technology – Generic coding of moving pictures and associated
audio information – Part 7: Advanced Audio Coding (AAC)
ITU-R BT.419-3, Directivity and polarization discrimination of antennas in the reception of
television broadcasting
62360  IEC:2004(E) – 9 –
ITU-R BT.709, Parameter values for the HDTV standards for production and international

programme exchange
ITU-R BT.1361, Worldwide unified colorimetry and related characteristics of future television

and imaging systems
3 Abbreviations and symbols
AAC Advanced Audio Coding
ADTS Audio Data Transport Stream

ARIB Association of Radio Industries and Businesses
BS Broadcast Satellite
bslbf bit string, left bit first
CRC Cyclic Redundancy Check
CS Communication Satellite
DDB Download Data Block Message
DEMUX de-Multiplex
DII Download Info Indication Message
DIRD Digital Integrated Receiver Decoder
DQPSK Differential Quadrature Phase Shift Keying
DSM-CC Digital Storage Media Command and Control
DTS Display Time-Stamp
ECM Entitlement Control Message
EPG Electronic Program Guide
HDTV High Definition Television
IEC International Electrotechnical Commission
IF Intermediate Frequency
IRD Integrated Receiver Decoder
ISDB Integrated Services Digital Broadcasting
ISO International Organization for Standardization
LC Low Complexity
LFE Low Frequency Enhancement
MJD Modified Julian Date
MPEG Moving Picture Experts Group
MSB Most Significant Bit
OFDM Orthogonal Frequency Division Multiplex
PCR Program Clock Reference
PES Packetized Elementary Stream
PID Packet IDentifier
PMT Program Map Table
PSI Program System Information
PTS Presentation Time-Stamp
QAM Quadrature Amplitude Modulation
QPSK Quadrature Phase Shift Keying
RS Reed-Solomon
– 10 – 62360  IEC:2004(E)
SDTT Software Download Trigger Table

SDTV Standard Definition Television

SHB Super Hi-Band
SP Scattered Pilot
TMCC Transmission and Multiplexing Configuration Control

uimsbf unsigned integer most significant bit first

16QAM 16-level Quadrature Amplitude Modulation

64QAM 64-level Quadrature Amplitude Modulation

4 Configuration of the receiver
4.1 General
The basic configuration of the “receiver” specified here is shown in Figure 1.
The basic configuration of the DIRD is shown in Figure 2.

1) Satellite receiving antenna

4)
2)
3) DIRD
IF input
coupling cable
Decoder, Video output
Converter HDTV-SDTV
descramblers,
Video and
Audio output
etc.
audio monitor
6) Coupling cable between
the terrestrial receiving
5) antenna and DIRD
Terrestrial
receiving
antenna
Digital-broadcasting receiver
Figure 1 – Basic configuration of the receiver

62360  IEC:2004(E) – 11 –
Interoperability
connection unit
TSs of Terrestrial adapter, CS and CATV
Satellite front end
Demodulation/
Tuner pack
TS
decoding De-interleaving
Reed-Solomon
Tuning
(8PSK, etc.)
Frame separation
Orthogonal detection decoding
Descrambler
TMCC decoding
Terrestrial front end
De-interleaving
Demodulation/
Tuner pack
TS
decoding hierarchical
Tuning
TS regeneration
processing, energy
(64QAM, etc.)
Detection
inverse-dispersal,
etc.
TMCC decoding
MPEG-2 Graphic
descrambler DEMUX
Video
HD video output
decoding
HD-SD D/C
SD video output
Audio
Audio output
decoding
Figure 2 – Basic configuration of DIRD
4.2 Satellite receiver
The satellite receiver is composed of the following units:
• satellite receiving antenna;

• converter;
• DIRD;
• coupling cable between the converter and the DIRD.
However, the satellite receiving antenna (including a feed horn) may be integrated with the
converter.
4.3 Terrestrial receiver
The terrestrial receiver is composed of the following units:
• terrestrial receiving antenna;
• DIRD;
• coupling cable between the terrestrial receiving antenna and the DIRD.

– 12 – 62360  IEC:2004(E)
5 Ratings and specifications of the units of the digital satellite broadcasting

receiver
5.1 General
In the descriptions in this clause, [BS] indicates the ratings and specifications only for BS digital

broadcast receivers, and [BS • CS] indicates those of the BS and broadband CS digital

broadcast dual-purpose receivers.

5.2 Satellite receiving antenna

Table 1 – Satellite receiving antenna rating
Item Rating
Received frequency range [BS] 11,71023 GHz to 12,16669 GHz
[BS • CS] 11,71023 GHz to 12,74825 GHz
Receiving polarization [BS] Right-hand circular
[BS • CS] Right-hand/left-hand circular
Antenna diameter The desired antenna diameter is not specified, as the necessary antenna
diameter varies depending on the receiving conditions
Output structure The output structure shall be composed of a WRJ-120-type wave-guide and a
BRJ-120 flange, and shall be provided with waterproof packing. Not applicable
to the all-in-one type with a converter

5.3 Converter
Table 2 – Converter rating
Item Rating
Input structure The input structure shall be composed of a WRJ-120-type wave-guide and a
BRJ-120 flange, and shall be provided with waterproof packing. Not applicable
to the all-in-one type with a converter.
Range of input-signal level For one channel: BS band: –90 dB(mW) to –70 dB(mW)
CS band: –94 dB(mW) to –70 dB(mW)
Overall gain BS band: 52 dB ± 4 dB
CS band: 52 dB ± 6 dB
Intermediate frequency BS band: 1032,23 MHz to 1488,69 MHz
CS band: 1575,75 MHz to 2070,25 MHz

First local frequency 10,678 GHz
Output impedance 75 Ω
Output structure Waterproof receptacle equivalent to a high-frequency coaxial C15-type
connector
Power supply [BS] DC +15 V +10 % –12 %, 4 W or less
[BS • CS] Right-hand circular, DC 13,5 V to 16,5 V (15 V), 4 W or less
Left-hand circular, DC 9,5 V to 12,0 V (11 V), 3 W or less

62360  IEC:2004(E) – 13 –
5.4 Coupling cable
Table 3 – Coupling cable rating

Item Rating
Type Equivalent to S-4CFB or upper grade

Cable length The assumed maximum length is 30 m. Loss generated in the cable in
conjunction with the achievement of broadband performance is compensated

for by inserting a booster between the converter and DIRD

Connection connector Converter side: high-frequency coaxial C15-type waterproof plug

DIRD side: F-type plug
5.5 Specifications of DIRD
5.5.1 General
DIRD shall satisfy the following specifications.
5.5.2 IF input
• Input-terminal structure: It is equivalent to a high-frequency coaxial C15-type connector
(female)
• Impedance: 75 Ω
• Received frequency: [BS] 1032 MHz to 1489 MHz
[BS • CS] 1032 MHz to 2071 MHz
• Input-signal level: –61 dB(mW) to –28 dB(mW)
5.5.3 Intermediate frequency
• Intermediate frequency: either 402,78 MHz or 479,5 MHz; otherwise, direct conversion shall
be performed. However, as the intermediate frequencies lie in the frequency band for
terrestrial television UHF broadcasting, it is necessary to consider possible interference.
5.5.4 Bandwidth of the intermediate frequency
The bandwidth shall be within an occupied bandwidth of 34,5 MHz.
5.5.5 Second local oscillator frequency
The second local oscillator frequency shall be above the received frequency.
5.5.6 Front-end signal processing

• Channel selection: A channel shall be selected from the IF range, in
accordance with the channel-selection control signal.
• Demodulation: The modulated signal is demodulated. The necessary
timings for a super frame, a frame, and a packet are
generated through clock regeneration, clock distribution,
and synchronization acquisition. Burst signals for carrier
synchronization shall be eliminated.
• Waveform shaping: Waveforms with a roll-off factor of 0,35 and a raised cosine
characteristic shall be distributed via a trans-
mission/reception route. The sending side shall conduct
aperture compensation using x/sin(x).
• Error-correction (inner code): Trellis/Viterbi decoding shall be carried out.
• TMCC decoding: TMCC is extracted from the decoded signal and decoded.

– 14 – 62360  IEC:2004(E)
• Frame reconstruction: A frame structure shall be reconstructed from the decoded

signal.
• Energy inverse-dispersal: The inverse-dispersal is performed with the 15th

M-sequence PN signal.
• Error-correction (outer code): Shortened Reed-Solomon code (204, 188) is decoded.

5.5.7 Transport stream processing

A TS packet is selected in accordance with a TS selection signal from a TS packet stream that
is frame-structured (made up of 48 slots) and is output.

It is mandatory for the DIRD to have a section filtering function that supports the following three
section formats for data stipulated by ISO/IEC13818-1:
a) one section is composed of one TS packet;
b) multiple sections are composed of one TS packet (however, the maximum number of
sections included in one TS packet is limited to 10.);
c) one section is composed of two or more TS packets.
5.5.8 Memories
5.5.8.1 Memory for storage of the DIRD program
The receiver shall have non-volatile memory for the storage of program codes.
5.5.8.2 Memory for storage data common to all receivers
As a non-volatile memory area for data common to all receivers, the BS digital broadcast
receiver shall have a memory of 10 kB and the BS and broadband CS digital broadcast
dual-purpose receivers shall have a memory of 30 kB, for a genre table, a program
characteristic table, and the reserved words, etc., and each shall have a data area for the
storage of logo data. In which logotype among the six types the logo data is to be stored depends
on the implementation of the receiver. The required memory capacity in each logotype is shown
in Table 4.
Table 4 – Size of logo data
(Three hundred types of logo data and a thousand types of services
are assumed for the BS and the broadband CS, respectively.)
Logo data Size
HD large (1/2 compression) 354 kB
HD small (3/4 compression) 300 kB
SD4:3 large (1/2 compression) 397 kB
SD4:3 small (3/4 compression) 267 kB
SD16:9 large (1/2 compression) 300 kB
SD16:9 small (3/4 compression) 202 kB

62360  IEC:2004(E) – 15 –
5.5.9 Video decoding and its output

The video output is described in Clause 7.

5.5.10 Audio decoding and its output

The audio output is described in Clause 7.

5.5.11 External interfaces
a) IF input
One IF input terminal shall be provided.
b) Video output (except for the integrated TV)
This is described in Clause 7.
c) Audio output (except for the integrated TV)
This is described in Clause 7.
5.5.12 Remote controller and channel access
5.5.12.1 General
No requirements are made for the shape or keys of the remote controller, the channel access
method, or the like. However, commonality of the keys used for basic functions (power supply/
channel access/system setting, etc.) should be provided wherever possible, in order to increase
convenience for the user.
5.5.12.2 Recommended keys
The following keys should be provided to enable the user to enjoy digital broadcast services:
• power-supply key (key that the user operates to switch between the on- and standby-mode);
• ten keys, a decision key, channel up-and-down keys, and a menu key;
• keys for “move upward,” “move downward,” “move rightward,” and “move leftward”
(A joystick or the like may replace these keys.).
For the BS and broadband CS dual-purpose receivers, the following key should be provided in
addition to the above-mentioned keys:
• network change key.
5.5.12.3 Channel access
The channel access method is not specified, but is left to those involved in product planning.
However, a service ID, a channel name, and a logo are designated by the broadcast service
provider. The method of accessing a channel, that is, whether it is done by entering the service
ID or by operating the ten keys, a channel addressing key, or the like, is left for the product
planning.
– 16 – 62360  IEC:2004(E)
6 Ratings and specifications of the receiving units for the digital terrestrial

television broadcasting
6.1 Receiving antenna
Table 5 – Ratings of the receiving antenna

Item Rating
Range of received frequency UHF channel 13 to 62 (470 MHz to 770 MHz)

Received polarized wave Horizontal or vertical

Antenna gain Antenna gain is not specified, as it varies depending on the reception
a
conditions
Directional pattern A directional pattern is not specified, as it varies depending on the
b
reception conditions.
a
When the antenna is permanently installed outdoors (stationary reception), the antenna gain should be
equivalent to or greater than that of a 14-element Yagi antenna (7 dB/UHF channel 13).
b
When the antenna is permanently installed outdoors, installation should be according to ITU-R 419-3 (see Figure
3).
- 5
-10
-15
-20
0° 10° 20° 30° 40° 50° 60° 70° 80° 180°
Angle relative to direction of main response

Figure 3 – Directional pattern of the antenna
(excerpt from ITU-R recommendation 419-3)

6.2 Specifications of the DIRD
6.2.1 General
The DIRD shall satisfy the following specifications.
6.2.2 Input
• Impedance: 75 Ω
• Received frequency: UHF channel 13 to 62
• Centre frequency: 473 + 1/7 MHz (channel 13), 479 + 1/7 MHz (channel 14), and 767
+ 1/7 MHz (channel 62)
dB
62360  IEC:2004(E) – 17 –
For a stationary digital terrestrial television broadcasting receiver to serve as community
receiving equipment, the reception channel range should include the SHB (Super Hi-Band) band

(channel C23 to C63) in addition to the UHF band. Further, whether the receiver will support the

VHF band (channel 1 to 12) and the MID band (channel C13 to C22) is to be reviewed at a later

date.
6.2.3 First intermediate frequency

• Centre frequency: 57 MHz
• Local oscillator frequency: Above the received frequency

6.2.4 Synchronization range of the received frequency
• Synchronization range of the received frequency: ±30 kHz or wider
6.2.5 Synchronization range of the received clock
−6
• Synchronization range of the received clock: ±20 × 10 or wider
6.2.6 Characteristics of the tuning unit
A tuning unit for receiving 13 segments and a tuning unit for receiving 1 segment located in the
central part of the 13 segments shall satisfy the following specifications:
• Minimum input level: –75 dB(mW) or lower (target value)
• Maximum input level: –20 dB(mW) or higher.
However, when the input level in a one-segment receiver is measured in terms of electric power
per segment, the level shall be reduced by a factor equivalent to the bandwidth (i.e. 1/13, or
–11 dB).
Table 6 – Protection ratios of the 13-segment receiver
Undesired signal Item Protection ratio
Analogue television From the co-channel 18 dB or less
From the lower adjacent channel (undesired signal on the lower side)
−33 dB or less
From the upper adjacent channel (undesired signal on the upper side) −35 dB or less
Digital television From the co-channel 24 dB or less
From the lower adjacent channel (undesired signal on the lower side) −26 dB or less

From the upper adjacent channel (undesired signal on the upper side)
−29 dB or less
NOTE The transmission parameters used for the measurement shall be as follows: Mode 3, guard interval
ratio of 1/8, no time interleaving, modulation of 64 QAM, and an inner-code of 7/8.

The one-segment receiver shall satisfy the above specifications. An improvement in
performance can be expected due to the fact that the segment in the centre of 13 segments is
allocated apart from the video and audio carriers of the analogue television signal for the
co-channel interference. Further, in the interference from adjacent channels, an improvement in
performance can be expected due to the separation of frequency locations.

– 18 – 62360  IEC:2004(E)
6.2.7 Front-end signal processing

6.2.7.1 Signal processing in the 13-segment receiver

• Receiver block diagram
Antenna
De-mapping
Carrier demodulation
57 MHz
Frequency Time
QPSK
Orthogonal
differential
de-interlea de-interlea
IF circuit demodula- FFT 16QAM
A/D
demodulation,
tion
ving ving
SP demodulation 64QAM
Synchroni-
~ ~
zation
regenera-
tion
Frame TMCC
extraction decoding
Byte Energy
Bit
De-puncturing
inverse-
de-interleaving
de-interleaving
dispersal
RS
Byte Energy
Bit
Viterbi
De-puncturing decod-
inverse-
decoding
de-interleaving
de-interleaving
ing
dispersal
Energy
Byte
Bit
De-puncturing
inverse-
de-interleaving
de-interleaving
dispersal
Figure 4 – Receiver block diagram of the 13-segment receiver
• Channel selection: A channel of UHF television broadcasting is selected.
• Synchronization regeneration: The signal in a selected channel is orthogonally
demodulated. OFDM symbol synchronization and an FFT
sample frequency are regenerated through synchronization
regeneration in accordance with the mode and the guard
interval length. The mode and the guard interval length can
be judged with the correlation of the guard interval period of
the OFDM signal.
• FFT: FFT operation is executed for a period corresponding to an
effective OFDM symbol duration. Due to the multipath
reception, FFT processing shall be performed for a suitable

period.
• Frame extraction: OFDM frame synchronization signal is extracted from the
TMCC signal.
• TMCC decoding: TMCC information is extracted from the TMCC signal and
used to perform various controls.
• Carrier demodulation: In accordance with the TMCC information, differential
demodulation for DQPSK (Differential Quadrature Phase
Shift Keying), synchronous demodulation through the use of
scattered pilot (SP) for QPSK (Quadrature Phase Shift
Keying), 16QAM, or 64QAM is performed, to detect
amplitude and phase information.
• De-interleaving: Frequency and time de-interleaving is performed.
• De-mapping: De-mapping of QPSK, 16QAM, or 64QAM is executed in
accordance with the amplitude and phase information and
bit information is extracted.
Division into
hierarchical levels
Combining of
hierarchical levels
Division into
hierarchical levels
TS regeneration
62360  IEC:2004(E) – 19 –
• Division into hierarchical levels: When TMCC information indicates hierarchical trans-

mission, the signal is divided into hierarchical levels. Note

that the division is performed of 204 bytes between the byte

next to the synchronization byte (47 H) of the TS packet and

the synchronization byte of the next TS packet.

• Bit de-interleaving: Bit de-interleaving is executed in each level of hierarchy.

• De-puncturing: Bit-interpolation is executed for each level of hierarchy, in
accordance with the convolution coding rate indicated in the

TMCC information.
• Viterbi decoding: Viterbi decoding with a coding rate of 1/2 is executed. In

Viterbi decoding, a soft-decision algorithm is employed to
improve performance. Further, to avoid error propagation
due to the convolutional code, termination processing is
performed based on the fact that the synchronization byte
(47 H) of the TS packet is already known.
• Byte de-interleaving: De-interleaving is executed on a byte-by-byte basis.
• Energy inverse-dispersal: Inverse dispersal is performed by means of exclusive ORing
with the 15th M-sequence PN signal o
...