ISDB-T Seminar
各社ロゴ(社名)
Presentation 4
ISDB-T
Applications
25th. July. 2007
Caracas, Venezuela
DiBEG JAPAN
Toshihiro Kojima
(Fuji Television Network,Inc.)
Digital broadcasting experts group
Contents
Features of ISDB-T
‡ Applications for Stationary Reception
‡
„HDTV
or Multi Channel SDTV Program
„Data Broadcasting
„Advanced Caption
„EPG(Electric Program Guide)
„Interactive service
‡
Applications for Mobile Reception
„One-Seg
Service
„HDTV Mobile Reception
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Features of ISDB-T system
TV station
Support three reception types
within one channel
6MHz
13 Segments
Mobile
Reception
1 segment
HD Mobile
Reception
12 or 1 segment
Stationary
Reception
12 segments
HDTV
Handheld terminal
Receiver in Vehicle
(diversity reception)
Digital broadcasting experts group
Home Receiver
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Powerful applications
HDTV
Data broadcasting
• High quality image on wide
screen and CD quality sound.
• Local news and weather forecast for
viewers at any time.
• Transmission service to Mobile accesses
Multi-channel program
• Standard quality multi-channel service
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Mobile accesses
Interactive TV
• Offers Interactive service
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Stationary Reception
HDTV
‡ Multi-Channel Programs
‡ Data Broadcasting
‡ Interactive Services
‡ Advanced Caption
‡ EPG (Electric Program Guide)
‡
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HDTV
‡High
9The
Definition Television Program
high quality images on a 16x9 wide screen and
CD-quality sound make you feel as if you were at the
theater. 5.1 multi channel audio can be transmitted.
9European broadcasters have opted for “multi-channel”
strategy, but Japanese broadcasters have chosen to
take advantages of “high definition” pictures.
9HDTV is a killer application.
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Multi channel program
‡ISDB-T can transmit multiple SDTV
programs simultaneously on a single
digital spectrum.
SD-1
SD-2
SD-3
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Flexible Programming
19:00
Prime
Time
HDTV
HDTV
Time
23:00
Mid
night
SDTV1
SDTV2
SDTV3
07:00
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Data broadcasting (1)
‡Data broadcasting - additional service.
„By clicking on d-button of a remote control unit,
you can access your requested information such as
local weather forecast, 24H news and traffic
information, etc.
Local weather forecast
Local news
Traffic
Information
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Data broadcasting (2)
‡Basic page format
Present time and date
Buttons to select
contents
Local weather information
TV station ad banner
News banner
Traffic Information banner
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Data broadcasting (3)
‡2 types of data services:
„Program-linked contents
zInformation service linked to on-air
programs
zAccessible during on-air
„Non-linked contents
zInformation service not linked to on-
air programs
zAccessible any time
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Data broadcasting (4)
‡Program-linked data contents
Linked data page format
On-air program
Click on
d-button
Contents
Menu
Click on
Menu button
Basic page format
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Data broadcasting (5)
‡Program-linked data contents
Linked data top page
Cast
Story
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Data broadcasting (6)
‡Non-linked contents
Today’s recommendation
ANNトップ
Program Information
Weather forecast
News
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Data broadcasting (7)
‡Program-linked interactive contents
On-air program: Interactive Quiz Program
Linked data page
remote
Answering Button
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Click a correct answer with
these colored button!!
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Interactive Services
‡Interactive
services is to realize the
interactive communications via internet line.
Broadcasting station
Home
TV program system
MUX
MOD
Data program system
Communication Contents Platform
Encrypt
Server
Contents
Server
Transmitter
Receiver
Clients
Management
Server
Internet
TCP/IP or Analog modem
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Receiver
Storage
BML/Video
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Interactive internet contents(1)
‡Interactive Shopping Contents
On-air program
data broadcasting
content
The button to
connect to
the internet
contents
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Interactive internet contents(2)
‡Interactive Shopping Contents
On-air program
Internet Contents
goods
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Advanced Caption
‡Closed Caption can be realized
more flexible manner.
Caption of several languages can be
sent to receiver.
Caption
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EPG(1)
‡EPG (Electronic Program Guide)
„An Electronic Program Guide (EPG) is
an interactive schedule of current and
upcoming programs that a viewer can
display on-screen simply by pressing a
button on his remote control unit.
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EPG(2)
‡EPG provides a lot of
program information,
and you can book
recording programs
with remote easily.
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EPG(3)
‡Broadcaster sends
program-info data as
SI(Service
Information) data.
‡How to display
program data is
up to receivers.
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Mobile Reception
One-Seg Services
‡ HDTV Mobile Reception
‡
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One-Seg service (1)
7.4 million One-Seg Mobile Phones were
Shipped (by the end of Apr. 2007).
(Unit: thousand)
12000
10000
7.4 million
8000
6000
4000
2000
0
by Jun July
2006
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Aug
Sep
Oct
Nov
Dec
Jan
2006
Feb
Mar
Apr
May
Jun
July
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One-Seg Service (2)
‡ The One-Seg service is transmitting
moving images to cell phones, car TVs,
personal computers etc , so that you
can enjoy One-Seg programs anytime
anywhere.
‡ Merits
Stable reception in a mobile environment.
High quality video & audio in a mobile
environment.
9 Robustness against noise and multi-pass.
9
9
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One-Seg Service (3)
Display Image
On
-air program
On-air
program
Example
Example parameter
parameter
Modulation
QPSK
Modulation
QPSK
Code
2/3
Code Ratio
Ratio
2/3
Guard
Guard Interval
Interval 1/8
1/8
Bit
416
/s
Bit Rate
Rate
416 Kb
Kb/s
Data
Data service
service
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One-Seg Service (4)
‡ Video (H.264)
approx. 180-256kbps
‡ Audio (AAC-SBR)
approx. 32-64kbps
‡ Data-cast (BML)
approx. 20-80kbps
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One-Seg service (5)
Example of Applications
‡ TV shopping
The service enables viewers to purchase commercial goods shown
on shopping program.
‡ Local service
The service can provide local information such as emergency alerts,
local events, notice from local government or hospital.
‡ Coupon ticket
Service enables to get coupon tickets such as grommet ,movie,
book.
‡ Additional information service
The additional information linked to on-air programs are
supplement service such as information on athletes and celebrities,
recipes, questionnaire and answer to a quiz.
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One-Seg service (6)
<Current Program Information>
<TOP>
<Top Recommendation>
<Fuji TV EPG>
<Program Information>
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One-Seg Service (7)
< Fountain of trivia TOP>
<Voting of “Hee”>
<Voting done>
Voting
the
number
of “Hee”
Contribution a
seed of Trivia in
secondary link
web site
To see Voting result
in secondary link
web server
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One-Seg Service (8)
No subscription fee
and
Powerful terrestrial
television contents
Unique & Unparalleled
Feature in the world !
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HDTV Mobile Reception
Reflected Wave
Direct Wave
Moving Vehicles
HDTV can be watched even in a moving vehicle
by using space diversity technology.
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Diversity reception system
Branch
#1
Maximal Ratio Combining with
carrier by carrier of OFDM signal
Tuner
FFT
Stable output signal
Receiving level
Branch
#2
Tuner
FFT
Diversity
Branch
#3
Spectrum
combiner
Tuner
FFT
Tuner
FFT
Branch
#4
Time →
SP
Channel
estimate
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Weight
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Comparison between Digital and Analog
Comparison experiment between digital and analog
TV on a mobile environment.
Digital Broadcasting
Analog Broadcasting
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Conclusion
ISDB-T
is filled with
leading-edge technologies
to make your dreams
come true !
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ISDB-T seminar in Venezuera
Thank you
for your attention !
END
Digital Broadcasting Expert Group
http://www.dibeg.org
mail: info@dibeg.org
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