One-Seg service

Transcription

One-Seg service

ISDB-T technical seminar(2007)
in Argentina
Seminar #7
Outline of
Service/ Receiver/Facility of Broadcaster
June, 2007
Digital Broadcasting Expert Group (DiBEG)
Japan
Yasuo TAKAHASHI
(Toshiba)
1
DiBEG
Digital Broadcasting Experts Group
Contents
1. Service Configuration of ISDB-T
2. Current Service in Japan
Part 1 Fixed reception service
Part 2 Portable/ Mobile reception service
3. Outline of ISDB-T receivers
4. Facility of Broadcaster (Example)
Part 1 Studio System
Part 2 Transmitter and Transmission Network System
2
DiBEG
1. Service Configuration of ISDB-T
As explained in forward seminar, ISDBT has a
priority for service variation by making use of its
hierarchical transmission technology.
At first, show a relations between service type and
hierarchical transmission system
3
DiBEG
Image of ISDB-T transmission system performance
Transmission system; Segmented OFDM with Time interleave
(Example; 1seg + 12 seg)
Layer A
(LDTV,Audio,Data)
13segments
(6MHz bandwidth)
QPSK constellation
Time interleave=0.4s
Difference of required C/N
Between 64QAM and QPSK
is about 12 dB
Layer B
(HDTV or Multi- SDTV
with Data))
frequency
64QAM constellation
Time interleave=0.2s
*13 segments are divided into layers, maximum number of layers is 3.
*Any number of segment for each layers can be selected (totally 13 segment)
*Transmission parameter sets of each layer can be set independently
(In above example, modulation index of each layer are different)
DiBEG
4
Examples of Hierarchical transmission system
• Hierarchical transmission
3 layer case
6 dB
16QAM
(Indoor antenna)
12dB
QPSK
(Portable)
64QAM
(Roof top antenna)
As shown above, ISDB-T transmission system supports maximally
3 reception style.
Therefore, any of transmission system can be arranged according
to the service concept in one frequency channel and one transmitter
5
DiBEG
Examples of Service Configuration of ISDB-T
(1) Single layer multi-program for stationary reception
TV program 1
.
.
(1 transmitter)
TV program N
Select any program
(2) 2 layers for HDTV and portable reception (same program)
HDTV program
(in home)
QVGA
(You can enjoy same TV program in any place)
(outside)
(3) 3 layers for HDTV , SDTV and portable reception (same program)
HDTV program
SDTV
QVGA
(roof top Antenna)
(indoor antenna)
(outside)
Current service in Japan is case (2) shown above.
DiBEG
6
2. Current Service in Japan
As described in forward page, Japanese Broadcasters adopt “1 +
12” service.
1 segment (Layer A) is used for mainly for portable
reception ,named “One Seg service”, other 12 segments (Layer
B) is used for fixed reception service.
In this section, examples of service are introduced.
Part 1; Examples of fixed reception service
7
DiBEG
Service lineup of ISDB-T in Japan
ISDB-T has 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
DiBEG
Mobile accesses
Interactive TV
• Offers Interactive service
8
Examples of fixed reception service
High
Definition Television Program
9The
high quality images on a 16ｘ9 wide screen and CDquality sound make you feel as if you were at the theater.
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.
9
DiBEG
Multi-cannel SDTV program service
ISDB-T can transmit multiple SD programs
simultaneously on a single digital spectrum.
SD-1
SD-2
SD-3
Maximum number of Channel is 8 defined in Japanese ISDB-T
DiBEG
10
Data broadcasting (1)
Data broadcasting is an 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 information linked to on-air program.
Basic page format
Present time and date
Today’s recommendation
Weather forecast
News
Fortune-telling service
Local weather information
DiBEG
News banner
TV station ad banner
11
Program-linked contents
Information service linked to on-air programs
Accessible during on-air
Basic page format
On-air program
Click on
d-button
Linked data page format
Click on
a program title
Contents
Menu
12
DiBEG
Non-linked contents
Information service not linked to on-air programs
Accessible any time
Today’s recommendation
Weather forecast
ANNトップ
News
Fortune-telling
service
DiBEG
13
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.
14
DiBEG
Part 2 Examples of Portable/Mobile
Reception Service
One-segment reception Service in ISDB-T
system is very unique and special advantage in
the World!
15
DiBEG
Worldwide Trend of Mobile Digital TV Reception
Importance of mobile reception is recognized worldwide.
Europe and U.S.A developed additional system for mobile reception.
Broadcasters need additional investment for mobile TV reception except in the
case of Japan’s system.
JAPAN
JAPAN
EUROPE
EUROPE
Mobile
Mobile Reception:
Reception: DVB-H
DVB-H
Fixed
Reception:
DVB-T
Fixed Reception: DVB-T
・DVB-H
・DVB-H was
was established
established for
for
mobile
mobile reception
reception as
as series
series of
of
DVB,
DVB, European
European DTTB
DTTB system.
system.
・Trial
・Trial Services
Services have
have been
been
provided
in
some
countries,
provided in some countries,
such
such as
as Finland,
Finland, France,
France, Spain,
Spain,
and
and Denmark.
Denmark.
※
※ MPEG-4
MPEG-4 AVC/ITU-T
AVC/ITU-T H.264
H.264
will
will be
be adopted
adopted for
for video
video
encoding.
encoding.
DiBEG
・ T-DMB
in
T DMB was launched
l
h d in
i Germany
G
i
Mobile
Mobile Reception:
Reception: ISDB-T
ISDB-T
Fixed
Fixed Reception:
Reception: ISDB-T
ISDB-T
・・ MPEG-4
MPEG-4 AVC/ITU-T
AVC/ITU-T H.264
H.264
was
was adopted
adopted for
for video
video encoding.
encoding.
・・ Launched
Launched on
on 11 April
April 2006.
2006.
・・ Federative
Federative Republic
Republic of
of Brazil
Brazil
also
Japan’s
。
also adopted
adopted
Japan’s system
system
。
on
on
U.S.A
U.S.A
Jun
2006.
KOREA
Jun 2006.
KOREA
Mobile
Reception:
Mobile Reception:
Mobile
Mobile Reception:
Reception: T-DMB
T-DMB
Under
Under Consideration
Consideration
Fixed
Fixed Reception:
Reception: ATSC
ATSC
Fixed
Fixed Reception:
Reception: ATSC
ATSC
・・ T-DMB
T-DMB based
based on
on European
European
Digital
Digital Audio
Audio Broadcasting
Broadcasting
(DAB)
(DAB) was
was adopted
adopted for
for mobile
mobile
reception
reception systems
systems unlike
unlike fixed
fixed
reception.
reception.
・・ Launched
Launched in
in Dec.
Dec. 2005
2005
※
※ MPEG-4
MPEG-4 AVC/ITU-T
AVC/ITU-T H.264
H.264
dd t dd ff id
id
・・ Stream
Stream distribution
distribution services
services
using
using mobile
mobile networks
networks instead
instead
of
terrestrial
broadcasting
of terrestrial broadcasting
have
have been
been started.
started.
・・ In
In addition
addition to
to DVB-H,
DVB-H, new
new
16
technologies
such
as
Mediatechnologies such as MediaFLO
FLO are
are being
being considered.
considered.
Comparison of Mobile Reception Systems
Japan
Other Countries
Transmission system
ISDB-T
(One-segment)
- T-DMB (KOR)
- DVB-H (EU)
- Media-FLO (U.S.A)
Service application
Video/Audio/Data
Video/Audio/Data
Assignment of new
frequency bandwidth
Not necessary
Necessary
Additional license
Not necessary
Necessary
Service provider
Broadcaster
(Free Service)
Broadcaster/Carrier/
Other company
(Pay Service)
Emergency Warning
Broadcasting System
Implementable
Cannot implement
Thrifty Power
Consumption
Excellent
Depend on systems
Obviously ISDB-T is excellent system for mobile reception.
DiBEG
17
One-Seg service (1)

One-Seg is abbreviation for “one segment service” .
One-Seg launched on April 1,2006 .
More than 7 million cell phones with One-Seg service have been
sold in the market according to JEITA statistics of End of
April,2007.
(Unit: million)
Source: Nomura Research Institute
One-Seg Mobile Phones
30
25
24.82
20
19.1
15
10
5
0
Now here!
10.8
In-Car One-Seg Receivers
3.5 million
4.54
4.24
0.89
0.03
2006
0.25
2007
1.03
2008
2.47
2009
2010
18
DiBEG
One-Seg service (2)
No subscription fee
and
Powerful television contents
Unique & Unparalleled
Feature in the world
Example of business model
Additional information service
TV shopping
Local service
19
DiBEG
One-Seg service (3)
One
-seg receiver
One-seg
Car TV
Cell phone
USB
Tuner
Audio
player
E-Dictionary
PC
20
DiBEG
HDTV mobile access (1)
Reflected Wave
Direct Wave
Moving Vehicle
As described in technical features ISDB-T has powerful time
interleave for mobile reception . With diversity reception
technology, mobile reception service is now popular in Japan21
DiBEG
Diversity reception technology
Adaptive Array Antenna on the vehicle's window
Receiving device
HD receiver
Antenna
Direction
Control
Doppler Shift
Compensation
Adaptive Array Antenna
DiBEG
Decoder
22
HDTV tuner for automobiles is now on sale.
Digital terrestrial television
broadcasting tuner for
automobiles
LCD for automobiles
High quality image wide-LCD panel.
Faithful reproduction of DVD and digital
terrestrial television broadcasting image
23
DiBEG
3. Outline of Digital Receivers in Japan
According to powerful applications of ISDB-T described in
forward section, now many types of receivers are on market in
Japan.
Technical details of digital receivers will be a theme of next
lecture, so , in this section, only show the examples of digital
receivers in market.
24
DiBEG
■Hardware Components of a Basic Receiver
Flows of signal and data
AAC
RF
TUNER
TS
OFDM
Decoder
MPEG2
IF Demodulator TS /Demux
H.264
Audio
Decoder
Video
Decoder
Audio
OUTPUT
Display
Processing
Video
OUTPUT
Caption
Data Carousel
System Bus
Remote
Controller
Key
Command
I/O
NVRAM
(Flash mem)
RAM
ROM
(Font, etc.) (Main memory)
CPU
Communication
I/F
Phone Line, LAN, etc.
Between a Full-Seg receiver and a One-Seg receiver, the basic
configurations are about the same, though there are some differences
such as a tuner, video decoder, resolution of display and so on.
DiBEG
RF ： Radio Frequency
IF : Intermediate Frequency
TS : Transport Stream
Demux : Demultiplexer25
NVRAM : Non-volatile RAM
■Fixed Receivers
PDP TV
VIERA TH-42PZ700SK
Panasonic
Wooo P42-HR01
HITACHI
PDP-A427HX
Pioneer
LCD TV
REGZA 42H3000
TOSHIBA
BRAVIA KDL-40V2500
SONY
DiBEG
SDTV
AQUOS LC-42RX1W
SHARP
LCD-32HR100
SANYO
VIERA TH-20LX70
Panasonic
AQUOS LC-16E1
SHARP
VIERA TH-15LD70
Panasonic
AQUOS LC-13SX7
SHARP
26
■Fixed Receivers(Cont.)
HDD/DVD Recoder
Blu-ray
RDZ-D800
SONY
DIGA DMR-XW51
Panasonic
VARDIA RD-S600
DVR-DV635
TOSHIBA
DIGA DMR-BW200
Panasonic
MITSUBISHI
STB-Cable
STB
TU-MHD600
Panasonic
BDZ-V9
SONY
DT400
MASPRO
TZ-DCH1800
Panasonic
27
DiBEG
■In-car Receivers
Navigation System
Portable Navigation Device
ISDB-T（Full-Seg）/One-Seg
One-Seg Only
Strada CN-HDS965TD
AVIC-VH099G
Panasonic
Pioneer
One-Seg Only
※Full-Seg is Optional
Mini GORILLA
NV-SD10DT
SANYO
In-Car TV
One-Seg Only
HS706D-A
NISSAN/SANYO
GORILLA NV-HD830DT
SANYO
CAV-TD85D1
SANYO
28
DiBEG
■Portable Receivers
Cell Phone
One-Seg Only
W51SA
P903iTV
911SH
W52T
D903iTV
911T
ａｕ
ＮＴＴＤｏＣｏＭｏ
14 models are available
at the end of May, 2007
Ｓｏｆｔｂａｎｋ
29
DiBEG
■Portable Receivers(Cont.)
One-Seg Only
DVD Player
DVD-LX87
Panasonic
Audio Player
Laptop
DVD-HP700ND
SANYO
Dictionary
Adapters(USB, etc.)
Many products are on sale.
VAIO type T
SONY
BUFFALO, I・O DATA, etc.
Portable TV
gigabeat V30E
Papyrus PW-TC900
XDV-100
TOSHIBA
SHARP
SONY
30
DiBEG
4. Facilities of Broadcaster in Japan
Digital Terrestrial Broadcasting has start from Dec.,2003 in
3 metropolitan area.
And from Dec. 2006, Digital Terrestrial Broadcasting has
been in service in all prefecture.
In this section, show the several examples of Broadcaster’s
facilities, both studio system and transmission system.
31
DiBEG
Current situation in Japan
Digital Broadcasting Service
Begun by Oct. 2006
Begun by Dec. 2006
Begun by end of 2006
As shown below, Digital Terrestrial Broadcasting has started
32
In all Prefecture
DiBEG
Analog to Digital
Differences Between Analog and Digital Broadcasting
Analog
Analog
broadcasting
broadcasting
Vision
Analog
STL
Master
Sound
Analog
transmitter
Key technologies
Digital
Digital
broadcasting
broadcasting
Vision
Sound
Data
Digitalization
Master
Digitalization
Coding
Coding
Coding
Multiplexing
MPEG Coding/Multi-plexing
OFDM
transmission
Digital
STL
Digital
transmitter
33
DiBEG
Applications
Segments: 12
Segments: 1
10:00
SDTV２
SDTV３
Supplemental
broadcast
SDTV１
Supplemental
broadcast
9:00
Supplemental
broadcast
Time
HDTV
Supplemental
broadcast
Supplemental
broadcast
8:00
1 segment service for mobile phone
34
DiBEG
Overall Block Diagram
Program
Information
System
Data Service
Production
System
Data
Server
Ether-Net LAN
Automation
Data Service
Server
Alarm
System
SI/EPG
Server
LOCAL LAN
Program
Server
CM Server
HD Program
VTR
Net
Terminal
Station
RMP
SD Program1
SD Program2
Matrix
Switcher
1-SEG Program
SI
RMP： Rights Management and Protection
ENC/MUX： Encoder / Multiplexer
DiBEG
STL
TX
Data services
Analog program
SI/EPG :Service Information/Electric Program Guide
ENC/
MUX
NET (HD:1 SD:1)
Analog STL
Net Terminal
Station
35
Block diagram of ENC/MUX
Total Control of Base
Band and ENC/MUX
Data
Server
Ether-Net LAN
Touch Panel
Terminal
Automation
VIDEO
AUDIO
Matrix
Switcher
Source
Input
Encoding
Parameter
Primary
TS
PSI/Transmission
Control Data
ISDB-T Transmission
Control Data
HD-ENC
SD1-ENC
SD2-ENC
System Change
ISDB
MUX
Transmission
Control Data
Multiplex TS
TS Splicer
STL
TX
1-SEG ENC
SI/EPG
Data Service
・Black Burst
SYS-1
ENC/MUX SG
Reference SYNC/MUX/SFN
・ 10MHz
SYS-2
ENC/MUX
36
DiBEG
Example of Master system
(TV Tokyo)
-Operation
-Operationby
byfew
fewclues
clues
-Efficient
-Efficientpositioning
positioning
-Multi-view and/or
Multi
-Multi-view
and/orselection
selectionon
onwide
wide
screen
screenLCD,PDP
LCD,PDP
-Use
-Usetouch
touchpanel
panelfor
foroperation
operation
-monitoring
-monitoringanother
anotherline
lineatat
monitoring
monitoringbooth
booth
37
DiBEG
Example of Master system
(TV-asahi)
38
DiBEG
Examples of Transmission System
(1)High Power Digital Transmitter System
(2)Micro-wave Links of Digital Terrestrial Broadcasting
(3)Trans-poser of Digital Terrestrial Broadcasting
39
DiBEG
(1) High Power Digital Transmitter system
(a) An Example of Conceptual block diagram (Full redundant system)
UP
Conv.
High Power
AMP
OFDM
MOD
UP
Conv.
High Power
AMP
Select
Divider
Transport
Stream
OFDM
MOD
To Antenna
(b) Power Line-up in Japan
Area
Digital TX
Analog TX
note
Tokyo
UHF
10 kW
VHF 50 kW
wide area key station
Osaka
UHF
3 kW
VHF 10 kW
same as above
Nagoya
UHF
3 kW
VHF 10kW
same as above
(c) Examples of Hardware; see following pages
DiBEG
40
Examples of High Power Digital Transmitter (Toshiba)
10 kW digital
Transmitter(2/3 type)
Output power series;
-10kW(2/3) type; for Kanto area
-3kW dual type; for Kansai and Chukyo
-1kW dual type; for medium cover area
3 kW digital
transmitter rack
1 kW digital
transmitter rack
Feature;
-Any of cooling type (water or air)
-Equipped high performance non-linear
distortion compensator
41
DiBEG
Examples of Digital Transmitter (NEC)
Features
1) Both liquid cooling / air cooling available
2) Compact size / Minimized footprint
3) Adaptive Digital Corrector to maintain optimal signal quality
4) Color LCD to monitor detailed parameters
3kW Air Cooled
UHF Digital TV Transmitter
(in operation at Osaka & Nagoya stations)
10kW Water Cooled
UHF Digital TV Transmitter
(in operation at Tokyo station)
42
DiBEG
Antennas(1)
A number of analog TV
antennas were already
mounted on the
optimum position of
Tokyo Tower .
Analog Antenna
NHK
TV Asahi
Fuji TV
TBS
NTV
TV Tokyo
43
DiBEG
Antennas(2)
Vacancy zone is around 250m of Tokyo tower, There
are no appropriate space except there. Digital
antennas were designed , compact size, 6 meters in
width and 12 meters in height.
Vacancy zone
Digital TV
Antennas
Special
observation deck
44
DiBEG
(2) Micro-wave Transmission Link
(a) STL(studio transmitter link) and TTL(transmitter transmitter link)
2 transmission types described below are available( can be applied to
fiber transmission)
1. TS transmission type
TS
64QAM
MOD
from
MUX
Up
Conv.
Micro-wave
Microwave
TX
2. IF transmission type
OFDM
MOD
OFDM
signal
UP
Conv.
Microwave
TX
Micro-wave
Microwave
RX
Down
Conv.
Microwave
RX
64QAM
DEMOD
Down
Conv.
TS
to OFDM
MOD
OFDM
signal
to transmitter
(b) FPU( Field Pick Up)
Field Pick Up is the outside program transmission system for news
gathering and sports relay system, etc. Recently, digital modulation
system such as single carrier QAM and OFDM are introduced.
(c) Examples of Hardware; see following pages
45
DiBEG
An Image of transmission network chain
Transposer
Broadcast
wave relay
Transposer
Broadcast
wave relay
Transposer
Transposer
Broadcast
wave relay
Micro TS-TTL
Micro IF-TTL
Main Transmitter
DiBEG
Transposer
Micro TS-STL
Studio
46
Example of Wide KANTO area Network
Transposer
Transposer
FX
Transposer
FX
Studio
Transmitter
：10WTX
：3WTX
：300WTX
FX
：IF TTL
：TS TTL
Tokyo Tower
０
１０
２０
３０
４０５０ｋｍ
47
DiBEG
Examples of Microwave STL/TTL (Toshiba)
TS STL/TTL TX
TS STL/TTL RX
-Dual type, seamless switching
-DVB-ASI digital interface
-Equipped automatic multi-path
equalizer
IF TTL TX/RX
-Dual type, TX/RX are installed in 1 rack
-OFDM IF signal interface
-Phase noise compensation technology
with pilot signal
48
DiBEG
Examples of Digital Studio to Transmitter Link for TS Signal
Transmission
(Hitachi KokusaiElectric)
2 channels dual system
・Seamless SHF Output Signal Switching
・DVB-ASI Digital Signal Interface
・High-performance automatic equalizer diminishes multi-path
distortion
DiBEG
49
Examples of Digital Transposer (NEC)
30W x 3-channels common amplification System
Features
1) Excellent IM (less than -50dB) using Feedforward technology.
2) MCPA (Multi Channel Power Amplifier) is available.
No required of Channel combiner, especially, in
the case of adjacent channel transmitting.
3) END (Equivalent Noise Degradation) improving
equipment for on air receiving system is provided.
- Loop canceller
- Diversity receiver
- Noise reduction (Re-mapping) Equipment.
50
DiBEG
Examples of Digital Transposer (Toshiba)
TS-TTL 3W TX
TS-TTL 50W TX
51
DiBEG
END of Seminar #7
Thank you for your attention
52
DiBEG

One-Seg service

Transcription

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