Standardization for Cable Television（JCTEA Standard）

Jan. 24th ２０11
Japan Cable Television Engineering Association(JCTEA)
1

CONTENTS
•
•
•
•
•
•

An Overview of Japanese Cable
Television
Progress of Broadcasting and CATVCATV Services
Standardization for CATV
Review of JCTEA
Current Topics

2

An Overview of Japanese
Cable Television
A History of Japanese CATV
Cable Television Subscribers
Internet Development
IP Multi-cast Broadcasting3

A Brief History of Japanese CATV: Upgrades and Full Service
１９５３－◆ TV broadcast service starts in Japan
１９５５－◆ First CATV starts in “Ikaho Spa.” （TV retransmission service starts）
１９６２－◆ The Building Standard Law is revised. High-rise buildings appear and largely introduce
CATV to deal with TV radio wave shadow.
１９６３－◆ “Gujou-hachiman CATV” first begins to broadcast locally produced programs.
１９７２－◆ The “Cable Television Broadcast Law” is established.
１９８４－◆ Satellite broadcasts start. (Broadcasting Satellite)
１９８７－◆ “Tama Cable Network” first opens an urban-type large-scale CATV station.
１９８９－◆ The private communication satellite JC-SAT is launched.
－◆ “Space Cable Net” (named for the satellite distribution of TV programs) begins.
（Multi-channel service starts)
１９９６－◆ CS digital broadcasting services start. (Communication satellite)－◆ “Musashino-Mitaka Cable Television” begins the first cable internet service.
１９９７－◆ “Titus Communications”& “Suginami Cable Television” start a CATV telephone service.
(Not IP telephone) (Telephone service starts)
２０００－◆ The BS digital broadcasting service starts (Broadcasting Satellite).
（Full-scale digital multi-channel service is introduced)
２００１－◆ The “Law Concerning Broadcast on Telecommunications Service” is established.
(Cable operators using telecom fiber come into existence)
２００３－◆ Terrestrial digital broadcasts start.（Digital channels further increase）
２００５－◆ FTTH regulations are added to the Cable Television Law.
２００６－◆ The “:COM” group begins the first mobile telephone service in CATV..
２００７－◆ “I-CAST” begins the first IP retransmission service for terrestrial digital
broadcast programs. (TV broadcasting programs are transmitted by IP
technology）
２００８－◆ Gap-filler systems are introduced as a measure for dealing with bad digital TV
reception◆ WiMAX wireless services are introduced by cable operators.

Service Change
Retransmission
Local programs addedPlant scale-up

Multi-channel service

Full service

Digital conversion

Ubiquitous
wireless cable
From MIC data4

Cable Television Subscribers
Subscriptions: 24.71 million households at the end of March 2010; subscription rate: 46.7％

Subscription(7.3%)(4.8%)(6.5%)(7.7%)(7.1%)(8.1%)(9.2%)(16.5%)

Subscription rate

Unit： 10,000 subscribers(24.5%)(10.7%)(19.5%)(18.1%)

‘98

‘99

‘00

‘01

‘02

‘03

‘04

‘05

‘06

’07

’08

’09

*１ （ ）Rate of increase*２ Subscription rate is based on Basic Resident Registers*３ From data of MIC (Ministry of Internal Affairs and Communications)
From MIC data

5

Broadband Subscribers
・ At the end of March, broadband subscribers had reached 32.04 million; the number of cable internet
subscribers reached 4.35 million （1３.６％ of all broadband subscribers）.
・ Cable internet service drove the market early on, followed by DSL. Today, FTTH service leads the way.
・ The number of cable internet subscribers is still increasing, but that of DSL subscribers began todecrease in the 1st quarter of 2006 (fiscal year).
Unit： 10K subscriber

2003 1Q

Total

2003 3Q 2004 1Q

2003

2004 3Q

2004

2005 1Q

2005 3Q 2006 1Q

2005

2006 3Q 2007 1Q

2006

2007 3Q

2007

2008 1Q

2008 3Q 2009 1Q

2008

2009 3Q

2009
From MIC data

6

DOCSIS 3.0 Ultra High-Speed CATV Internet
Thirty-one CATV operators introduced or are introducing DOCSIS
wideband cable modem system(ultra high speed), complied with orbased on DOCSIS 3.0, among 379 CATV internet operators. （Jun 2010）
More operators will introduce it soon（2011）.
1. DOCSIS 3.0 features
The DOCSIS 3.0 system provides ultra high-speed internet service.
・ Some channels having 30 to 40 Mbps (per 6 MHz) are bonded up to
120M to 1.2G bps over the HFC system with channel-bonding
technology.
・ It has as same speed as GE-PON over FTTH.
2. DOCSIS 3.0 advantages
・ Separate channels can be bonded; effective use of spare channels isavailable.
・ Conventional DOCSIS modems can be used together in the network.
・ Change of CATV network infrastructure is not necessary (for example:
to FTTH).
・ Service speed can be made higher by increasing the number ofbonding channels according to the customer’s requirements
7

Changes in IP Multi-Cast Broadcasting Subscribers
・ Penetration reached 749,000 subscribers in 2010 (calendar year; excludes
subscribers of VOD only)(1,000 subscribers)

IP Multi-cast Broadcasting Subscribers

800
700
600
500
400

300
200
100
0

2006 2 Q

2007 3 Q

2008 4 Q

2009 1 Q

2010 2 Q* Summations of subscriber data of five TV broadcast operators using IP multi-casting systems among TV
broadcast operators providing telecommunications service.
From MIC data

8

IPTV in Other Countries
No. of subscribers (million)

EuropeFrance:Germany:
Belgium:
Spain:
Italy:

9.4
1.6
0.9
0.8
0.8

6.5
USA

ASIA

JAPAN

(Verizon:
AT&T:

3.2
2.5 )

China:South Korea:
Hong Kong:

6.8
2.9
1.2

2.0

Background

Reason・The multi-ch video market remains
immature
・CATV is not popular in somecountries

・CATV is not well developed
・IPTV service entry of a German
telecom・Government subsidization(Italy, France)
・Time-shifted TV (Italy, UK, France)
・IPTV is supplemented with BB

・CATV has superiority in multi-chvideo services
・ Multi-ch video services are
saturated
・RF video on FTTH

・Telecom carriers fight hard against
CATV・Same service level as CATV in
price, HD video, digital only.
(Triple-play service)・China: Increase of four operators
・Hong Kong & South Korea: CATV
has spread broadly and multi-chvideo requirements are high・CATV & telecom carriers are fierce
competitors

・China: Subscriber increase of
BesTV of SGM origin
・Hong Kong: Service strategy
gets the backing of subscribers
・South Korea: Telecom carriers areaggressive in securing subscribers

・FTTH has spread rapidly (Internet)
・Multi-ch subscriber penetrationof CATV is about 31%

Future factors
・IP retransmission of terrestrial
broadcast programs
・Giving advantage of IP service inNo. of VOD program titles andservice rate.
・Increase of HD content
Research by JCTEA, June 20109

Progress of Broadcasting and CATV

10

Cable Television Development in Japan
1950

1970

2000

1990
Sound

MW (1925)

SW (1952)

DigitalTrial from 2002
Finish Jul. 2011

FM (1969)

Terrestrial

Television(Analog)
Television Color TV(1953)(1960)

Sound
multiplex(1982)

Teletext
multiplex(1985)

Data
broadcasts

Digital(Dec. 2003)(1996)

Finish Jul. 2011

SDTV (Analog)

Broadcasting
Satellite (BS)1989

Digital (SDTV+HDTV)
Dec 2000SDTV (Analog)

Communication
Satellite (CS)Finish 1998

Digital (SDTV)

1992
1996
AnalogCable
Television

1955
First plant inIkaho Spa

1972 1975
1980
CATV JCTEA JCTA
Law

1996
Digital
1989
Internet 2000
Cable2001
Space start
Lab CATV on
Cablenet
Telecom
Service11Digital TV retransmission Services of CATV
Cable Television Station
Terrestrial

CAS Information
BS

B-CAS
センター

StationTerrestrial
Terrestrial TM

BS
Broadcasting SatelliteTM

SKY PerfecTV!

110°CS

Terrestrial R&D HDTV Monitor(Built-in CATV Terrestrial Pass-through )ＳＴＢ100110°CS TM
C-CAS
Card

B-CAS
Card

JC-HITSJC-HITS TM

Contents
番組供給会社
番組供給会社
番組供給会社
Suppliers

ＳＴＢ200124°CS
124°
/128°
CS

B-CAS
Card

C-CAS
card

HDTV Monitor

ReMUX Transmission

SKY PerfecTV

ＳＴＢ300Private Producer
i-HITS TM
i-HITSSDTV Monitor

B-CAS
Card

144°CS

Telephony Return

ＣＭＴＳ

Internet

C-CAS
Card

HDTV Monitor

ＳＴＢ400Information Data

CAS Center

SMS

Ｍｏｄｅｍ

RF Return

B-CAS
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RF Return

C-CAS
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HDTV Monitor

12

Single TS & Multiple TS Multiplexer
Program 2
PID：b

Program 3
PID：c

TS A
Program 4
PID：a

Program 5
PID：b

Program 6
PID：c

TS B
Program 7
PID：a

Program 8
PID：b

Program 9
PID：cSingle TS multiplexer

Program 1
PID：a

PSI：Program Specific Information SI：Service Information

Selected program

TS：Transport Stream

TS C

Prog.2
PID：u

PID：Packet Identifier

Prog.3
PID：v

Prog.4
PID：w

EPG：Electronic Program Guide

Prog.5
PID：x

Prog.7
PID：yProg.8PID：z

TS D (Output TS)
・PSI／Si and EPG are restructured in order to select channel.
・PID must be changed to have a different PID between eachprogram.

Program 1
PID：a

Program 2
PID：b

Program 3
PID：c

Program 4
PID：a

Program 5
PID：b

Program 6
PID：c

TS B
Program 7
PID：a

Program 8
PID：b

TS C

Program 9
PID：c

Selected TS

TS A

Multiple TS multiplexer

Fig. 1 Conceptual illustration of single TS multiplexer

Header

Prog.1
PID：aProg.2
PID：b

Prog.3
PID：c

Prog.7
PID：a

TS A

Prog.8
PID：b

Prog.9PID：c

TS C

Multiplex frame・Multiplexer produces multiplex frames by multiple TS formats
・Input TSs are multiplexed while keeping program drawing.
・PID are not changed because of existing dissimilar PID in the TS.

Fig.2 Conceptual illustration of multiple TS multiplexer(For terrestrial digital TV signal and digital BS signal retransmission)

13

CATV Services

14

Cable TV Services In Japan
1. TV video service
1) Resending TV broadcast programs
・Terrestrial TV broadcast programs (analog and digital)
・BS broadcast TV programs (analog and digital)

2) Resending CS-distributed TV programs
・Many specialized programs (news, movies, sports, anime, etc.)

3) Locally produced programs
・Local pick-up news, local government news, local emergency
information (disasters, accidents), etc.

4) Other video services
・Special program VOD, ITV video transmission

2. Internet service providing
3. Telephone services (Triple-play)・ Fixed telephone

4. Mobile telephone (Quad-play)
5. Others
・Emergency earthquake notices, karaoke, local information
15

CATV Service Signals
Many RF Signals go through the Cable Transmission Line
Television Broadcasting Services
1) 90 - 770 MHz
・ NTSC-VSB-AM, 64 QAM (256 QAM), OFDM
2) 1035.05 MHz - 1484.95MHz・ BS-IF（Analog & Digital）
3) 1595.75MHz ～ 2070.25MHz・ Broadband CS-IF (digital)

Other Telecommunications
1) Telecommunication
・Cable internet
・IP telephone
・Mobile telephone
・Video on demand
・WiMAXetc.
2) Others
・Emergency earthquake notices
・Karaoke・Public announcements
・Locally produced TV uplinks
・Surveillance ITV・Other control systems etc.

16

Frequency Allocation of CATV Signals (Example)
Terrestrial Digital TV Broadcasting

Typical CATV Freq. Band

１）FTTH CATV downstream（Analog multi-chs＋dig. multi-chs＋BS-IF＋broadband CS-IF）
BS-IF
70

CATV signals

770 1032

Bb. CS-IF

1489/1595

2072 MHz

２）HFC CATV signals（analog multi-ch＋digital multi-ch＋others）
VSB-AM
64 QAM
Up-st

Telecom
10 55 70

Down st.

Selected content from the satellite channels arecarried on CATV signals of the 770 MHz band.
ＢＳ broadcasting

BS

Broadcasting＆ telecommunication

770
CATV signals（Multi-channels of analogue/digital)）1032

ＣＳ broadcastingCS
1489/1595

CS
2072

Received at headend

2602 MHz17

Transmission Signals of FTTH or HFC
Television Signal

Modulation

Standard Television Broadcasting（Analog Television）

NTSC-VSBAM

Std. Digital Television Broadcasting（Terrestrial Digital Television）

OFDM

Digital Cable Television
Broadcasting

64 QAM
256 QAM

Std. Satellite Broadcasting
Television(12GHz Band)（BS Analog Television）

FM

Std. Satellite Broadcasting Digital
Television (BS Digital Television)

TC8PSK

Freq. Band90- 770 MHz

H
F
C
F
T
T
H

BS-IF
（1035-1332-1484MHz）
BS1 - BS15 - BS23－

(12GHz Band)

Broadband Transmission Digital
Television (CS Broadband DigitalTV)(12GHz Band)

Broadband CS-IF

QPSK（1595-2071MHz）＊（2126-2602MHz）18

A Typical CATV Network in Japan
HFC (Hybrid Fiber and Coaxial) System

Downsized Cell
(500 Households)

Renewal Optical Fiber
CATV Center

Coaxial Cable
Optical Fiber

Optical Node

Downsized Cell
(500 Households)

Original Cell
(1,500 Households)

Coaxial Cable

Additional Opt Node
Coaxial Amp
Optical Fiber Cable

Downsized Cell
(500 Households)

Additional Optical Fiber Cable
Coaxial Cable

Higher Performance CATV by Cell-Size Reduction

19

Advanced CATV System
FTTH (Fiber To The Home) System

Optical Fiber Cable
CATV Center

Optical Fiber Cable

Optical Splitter (Coupler)

Optical Fiber Cable

Cable Splitting Closure

Optical Fiber Cable

20

Intensity Modulation Transmission Over FTTH
Mainly using CATV operators
Transmitter input

Optical transmission

V-ONU output

AM & QAM carrier(70 M - 2.6 GHz)

AM & QAM carrier(70 M - 2.6 GHz)

AM & QAM carrier(70 M - 2.6 GHz)

2.6 GHz

2.6 GHz

2.6 GHzTV signal 1
TV signal 2

Direct or external
modulator & opt amplifier

TV signal 3

Dispersion
compensation fiber

TV signal 4

TV signal n↓

Optical fiber

Features・Optical modulator is easier and cheaper・ Weak against noise for wave dispersion, opt-reflection, amplifier noise・ Low sensitivity of opt-receiver21

FM Conversion Transmission Over FTTH
Mainly using NTT
Transmitter input

Optical transmission

V-ONU output

AM & QAM carrier(70 - 2600 MHz)FM signal (to 6 GHz)

AM & QAM carrier(70 - 2600 MHz)

2.6 GHz
Current change

2.6 GHz
Wave length change

TV signal 1
TV signal 2
TV signal 3

Optical fiber
FM-LD
Delay-line FM demodulator

TV signal n

Local LD

Opt heterodyne

FM converter
FM conversion transmitter

Features・Circuits of transmitter and receiver are more complicated, more expensive.
・ Strong against noise for wave dispersion, opt-reflection, amplifier noise・ Higher sensitivity of opt-receiver

22

Digital Conversion
for Terrestrial Broadcast
Digital Conversion Of CATV・ Gap filler for digital conversion
・ Introduction of provisional conversion fromdigital signal broadcasts to analog signal
broadcasts for analog televisions
23

Digital Conversion Of CATV
Shifts in the number of CATV subscribers andterrestrial digital compatibility rate
・ The number of CATV subscribers has been increasing every year; at the end of September 2010,
there were 25.33 million subscribers.
・ Based on the number of subscribers, the terrestrial digital compatibility rate with CATV is 98.6%.

(10,000
households)

Number of subscribers
Number of subscribers who can viewterrestrial digital broadcasting
Number of subscribers who cannot
view terrestrial digital broadcasting
Terrestrial digital compatibility rate

May ’07

Sep ’07

May ’08

Sep ’08

May ’09

Sep ’09

May ’10

Jun ’10

Sep ’10

Retransmission over the cable-televisionsystem for terrestrial broadcast
Digital TV receiver
available at stores

OFDM tuner
OFDM tuner
OFDM tuner

MIX

Pass-through receiving(OFDM)

Digital TV tuner

Conventional
analog TV receiver

Digital TV receiver
QAM modulator
QAM modulator
QAM modulator

Trans-modulation system

Cable TV headend

SplitterTS

MIX

TV antenna

OFDM

Signal processor(Frequency converting)Multiplexer
Multiplexer
Multiplexer

Splitter

Signal processor
Signal frequency)
processor(Same
Signal frequency)
processor(Same(Same frequency)

Cable TV network

Pass-through system

SplitterTerrestrial TV tower

QAM receiving andPass-through receiving (OFDM)

Cable TV STB

Conventional
analog TV receiver

・A digital TV receiver provides a terrestrial OFDM tuner, BS tuner, and CS tuner
・An STB provides a terrestrial OFDM tuner, QAM tuner, and hard disk memory25

Function Blocks For Multiplexing TS
Multiplexingclock

ＴＳ input

ＮＩＴ
rewriting
ＮＩＴ書き換えSpeed

速度
converting
変換

Multiplexing
multi TS・ ・
Cable TV network
parameter

Terrestrial → cable TV
exchange NIT

ＴＳ information

・ ・Null packet
Control &TS structure
information

Producing
multiplex
frame

Producingframe header

Relatedinformation(ECM/EMM)

Fig. Configuration of trans-modulation for terrestrial broadcast signal

26

Gap Fillers for Digital Conversion
Locational image of small power broadcasting repeaters (gap fillers) to recover
blind areas (gaps) in digital TV reception
Planned broadcasting area
Underground areas
Area covered by TV tower

Blind areas of TV reception (SPR applicable)
Common antenna system
Behind buildings
Behind hills

Private recovering SPR (licensed)
Behind mountains
SPR of broadcast company
Behind bridges

CATV

SPR: Small Power Repeater (gap filler of less the 50 mW/ch)27

Gap-Filler System

Receiving amplifier(multi-channel
signal processor)
Preamplifier

Multi-channeltransmitter

Connecting line
（Coaxial cable or opt. cable)

Configuration of the gap-filler system

Preamplifier・Frequency deviation： ±20kHz
・Delay time： 120μs ≥・Antenna power： 50 mW ≥・Spectrum mask:

Transmitter

OFDM-SP

Connecting line
(Cox. or opt. fiber)

Transmitter

Conceptual image of covering TV reception in blind reception areas behind
mountains with gap-fillers (small power transmitters)
28

Digital-to-Analog Conversion
Introduction of digital-to-analog
conversion equipment
CATV operator
Shared audio and video
reception equipment as ameasure against poor reception

Shared audio and video
reception for housing
complexes

Digital headend
Digital-to-anlog
conversion
equipment

Remote area audio andvideo reception: Digital waves: Converted digital to-analog
waves (analog)

From MIC data29

Digital-to-Analog Conversion for Remaining Analog TVs(Provisional)
Terrestrial digital TV broadcasting is converted to analog format at the headend for CATV and resent.
・ Requests by viewers to continue using usable analog receivers even after terrestrial analog broadcasting ends
・ Equalization of the burden of viewers that need to replace analog receivers, including second and third receivers
・ Equalization of disposal/recycling of analog receivers

Thus, digital-to-analog conversion will be promoted as a provisional measure until the end of March2015.
After the end of terrestrial analog
broadcasting

Provisional introduction of digital-to-analog conversion

Since only digital broadcasts are resent to subscribers via
cable, digital broadcasting cannot be viewed on analog
TVs other than those that are connected to an STB

Having cable TV operators convert terrestrial digital broadcasting toanalog broadcasting as a provisional measure will make it possible
to view terrestrial digital broadcasting even on analog TVs for acertain period of time
Digital broadcasting

CATV company

Digital broadcasting

Digital TV
STB
STBBroadcasting converted to analog

Other analog TVs*
Total number ofsubscriber
householdApprox. 24.71
million households(end of March
2010)

Digital TV

STB

Many channels
with HD image
quality

Many channels
with HD image
quality

Other analog TVs

Notviewable

SD imagequality

Viewable
Digital antennaconversion
equipment

By the endof March
2015(Note)” Digital -to-analog conversion” service comes with the following kinds of limitations.
(1) Images are letterbox size and of SD image quality.
(2) Data broadcasts cannot be received.
(3) EPG (electronic program guide) cannot be used.
(4) The number of times that broadcasts can be recorded is “copy once.”

30

From MIC data

Standardization for CATV
Government Regulations andVoluntary Consensus Standards

31

Standardization Organization for
Telecommunication
Dpa

JLabs

Operational technicalspecifications for broadcast

Operational technicalspecifications for CATVARIBTechnical standards for radio
communication & broadcast

JCTEA
Technical standards for CATV

Standardization for
Telecommunication &Broadcast
ITU-R

ITU-T

TTC
Technical standards fortelecommunication networks

JCTEA:
ARIB：

JCL： Japan Cable Laboratory
Dpa： The Association of Promotion for
Digital Broadcasting

TTC：
（

：

Japan Cable Television
Engineering Association
Association of Radio Industries
of Businesses
The Telecommunication
Technology CommitteeStandardization Organization)

32

CATV Standardization Process in Japan
Users, operators, suppliers

ITU-T

Demand

MIC
Study
group

Participation

Laws & regulations
Telecom.
Technology
Sub-council

RulemakingCable
Television
Regulatory
CouncilWorking
groupStandard
Assembly

Voluntary
JCTEA
standard(Operational technical std.)

JLabs
Technical
committee

MIC’s cable
television
license(Technical std.)

JCTEA
Standardizationcommittee

Mandatory
technical
requirements

Working
group

Voluntary lab
specification

Active andeffective
use ofcable
television

Note: MIC = Ministry of Internal Affairs and Communications
33

Government Regulations and
JCTEA Standards for Cable Television
Government Regulations

JCTEA Standards

Mandatory

Voluntary (Industrial)s To promote efficientuse of frequenciess To avoid interferences To protect consumers(minimum quality)s To ensure common
interfaces To ensure suitable quality(higher quality)s Frequency band
Technical s Carrier-to-noise ratios Bit error rate
items

s Carrier-to-noise ratios Communication protocols Sensitivity
s Measurement methods

NaturePurpose34

JCTEA Standard Committee• Establishment: 1996
Members: 65 (as of Dec. 2010)– Open to any company, organization, or person– No limitation on nationality– Independent from JCTEA membership• Organization:

Standard Assembly
ChairmanMembers

Publication and maintenance of
JCTEA standards

8 working groups + 2 committees

・Standardization activities
・Discussion and drawing of standards for technology and measurement
・ Publication of standards books
・Certification of standards conformity
35

JCTEA Standards concerning Networks, Equipment,
STB & Measuring Methods for Digital, FTTH, & Internet
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

STD-001 Conditional Access for Digital Cable Television
Only the Japanese edition
STD-002 Multiplexing for Digital Cable Television
is available now.
STD-003 Service Information for Digital Cable Television
STD-005 Data Transmission Equipment for Cable Television Network
STD-006 Symbol Marks for Design of Cable Television
STD-007 Receiver for Digital Cable Television
STD-008 BS Digital Broadcasting Pass-Through System for Cable Television
STD-009 Method of Measurement for Cable Modem
STD-010-OFDM Method of Measurement for OFDM Signal
STD-010-PSK
Method of Measurement for PSK Signal
STD-010-QAM
Method of Measurement for QAM Signal
STD-011 Terrestrial Digital Retransmission System for Cable Television
STD-012 Retransmission System of Terrestrial Digital Broadcasting for Cable
STD-013 Transmission System of MDU Inside
STD-014 Optical Network and using Equipment for FTTH Cable Television System
STD-015 Method of Measurement for FTTH Cable Television System
STD-016 Method of Interference Measurement for Cable Television Signal Transmission
System
STD-017 Examination Facilities Equaled with Actual Cable Television Network for Cable
Television Signal Transmission System
STD-018 Optical Network Specification for FTTH Cable Television System
STD-019 Gap-Filler System and its Equipment for Digital Terrestrial Television Broadcasting
STD-020 Method Of Measurement for Gap-Filler System and its Equipment
STD-021 18 GHz Band Wireless Access System
Red letters: related to digital transmission

36

Review of JCTEA

37

Summary of JCTEA• Establishment: Organized in 1975
• Number of members: 660 (Sep. 2010)• Objective
JCTEA aims to contribute to the smooth and sounddevelopment of a highly networked information society
through
・The improvement and spread of CATV technology
・The realization of good television reception

38

Activities of JCTEA
・Research and development of CATV network technology
・Standardization of CATV network technology
・ Discussion and drawing of standards for technology and measurement
・ Publication of standards books
・Certification of standards conformity

・Certification of “CATV broadcast” engineers
・Technical consultation on television reception (digital &analog)・Support for terrestrial TV digital conversion
・Research on television reception interference caused by buildings,
etc.

・Workshops and lectures on CATV technology
39Current Major Topics
•
•
•
•
•

•
•
•
•

FTTH for outside plant and building wiring
Ultra high-speed internet system (DOCSIS 3.0)
IPTV (IP broadcasting, storage-type broadcasting)Home networks (high-speed house wiring for Internet,
high-definition TV signal exchange )Smooth digital conversion for terrestrial TV broadcasting(complete conversion to digital TV broadcasting from analog TV
broadcasting in July 2011)
Broadband wireless cable systems (WiMAX, etc.)
Small power broadcasting repeaters (gap-fillers) for terrestrial
digital TV
Introduction (2011-2015) of temporary conversion from digital
signal broadcasts to analog signal broadcasts
Area-based one-segment broadcastingThank you for your kind attention!!

40