Outline of EWBS Module - DiBEG · measuring instrument of reception sensitivity 11. Chapter 3...

Outline of EWBS Module

Chapter 1Introduction of EWBS

1

Configuration of EWBS Signal

Emergency information is telecast in combination of TMCC signal and TS (Transport Stream).

Information Source Encoding Part

Video Encoding

Audio Encoding

Data Encoding

Video

Audio

Data

Multiplexing Part TS

Remultiplexing

Data Encoding

・・・EWBSCharacter

Information

Layer Processing Error Correction

Modulation Interleave

TMCC signal generating

Frame Configuration

Transmission Route Encoding Part

OFDMTransmission

wave

Formation Information

EWBS Area Information

（PMT)

EWBS Activation Flag(TMCC_B26)

2

What is TMCC Signal?

Parameters such as “in which mode should the signal be demodulated?” are described. EWBS Activation Flag is included for the purpose of power control.

SP S

0 1 2 3 4 5 6 7 8 9 10 11 12

Carrier Number

S S S S S S S S S S

SPS SS S S S S S S S S S

SP

SPS SS S SS S S S S S S

SPS SS S S S S SS S S S

SP S S S S S S S S S S S SP

0

1

2

3

OFD

M S

ymbo

l N

um

ber

TM

CC

4

S

S

S

S

S

SP S S S S S S S S S S S

SPS SS S S S S S S S S S

SP

SPS SS S SS S S S S S S

SPS SS S S S S SS S S S

SP S S S S S S S S S S S SP

199

200

201

202

203

S

S

S

S

S

0,0 3,0 4,01,0 2,0 7,0 8,05,0 6,0 9,0 10,0

0,1 3,1 4,11,1 2,1 7,1 8,15,1 6,1 9,1 10,1

0,201 3,201 4,2011,201 2,201 7,201 8,2015,201 6,201 9,201 10,201

11,1

95,0

11,201

0,2 3,2 4,21,2 2,2 7,2 8,25,2 6,2 9,2 10,2 11,2

0,3 3,3 4,31,3 2,3 7,3 8,35,3 6,3 9,3 10,3 11,3

0,4 3,4 4,41,4 2,4 7,4 8,45,4 6,4 9,4 10,4

0,200 3,200 4,2001,200 2,200 7,200 8,2005,200 6,200 9,200 10,200 11,200

0,199 3,199 4,1991,199 2,199 7,199 8,1995,199 6,199 9,199 10,199

0,202 3,202 4,2021,202 2,202 7,202 8,2025,202 6,202 9,202 10,202 11,202

0,203 3,203 4,2031,203 2,203 7,203 8,2035,203 6,203 9,203 10,203

95,1

95,2

95,3

95,4

95,199

95,200

95,201

95,202

95,203

・・・・・・

・・・・・・

・・・・・・

・・・・・・

・・・・・・

・・・・・・・・・

・・・

・・・

・・・

・・・

・・・

・・・

・・・

・・・

・・・

・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

・・・・・・・・・

OFDM Segment Configuration

Frequency

TMCC

3

Transmission and Multiplexing Configuration Control

What is TS Signal?Broadcasting contents such as video, audio, etc., as well as broadcasting information such as datacasting, emergency warning, etc. are multiplexed into the TS signal.In EWBS, emergency warning information is distributed by using PMT and character superimpose packets.

TS is something like a ship container, carrying video, audio, program distribution information, etc.Compressed video, audio, contents for datacasting, etc. are divided into pieces; and they are transmitted serially in the TS packets of 188 byte each. An ID number, called PID, is allocated to each of the packets; in a way that what sort of information is included in each of the containers can be identified.

Video AudioPAT Video PMT DATA Video EIT Audio Video DATA TOT Video

188Byte

Video Video

4

Transport Stream

5

PAT … Program Association Table (PID = 0 x 0000)PID of PMT is written in. The number of PMT is the same as that of services provided.

PMT … Program Map Table (PID = Described in PAT.)PID of the name of program, video, audio, etc. as well as the format of video, audio, etc. are written in .Area code for EWBS and PID of character superimpose packets are also written into the PMT.

PMT(1) PID

PMT(2) PID

PMT(3) PID

PAT PMT (1)

Program nameVideo PID

Video formatAudio PID

Audio formatData PIDEWBS Area

EWBS Text PID…

PMT (2)

VIDEO stream

AUDIO stream

DATA stream

EWBS Text stream

Video

Audio

Data

EWBS Text

EWBS Area

Composition of EWBS Receivers

TMCC signal is extracted from the Tuner.Once TMCC_B26 is changed to "1", TS Analyzing Part should be activated for TS analysis.Targeted area of emergency warning is detected from PMT in the TS packet. Contents of warning are extracted from the character superimpose packet of TSP.

Antenna

RF -> IF FFT

TMCC

Carrier Demodulation

TMCC

Emergency Information

TS Analyzing

Part

TS

6

Chapter 2Hardware of EWBS module

7

EWBS ModuleNewly developed module for EWBS reception, to be incorporated into simplified EWBS receiver or TV receivers.

40m

m

25mm

8

Features of EWBS Module Size: 40mm X 25mm SMD/DIP(2mm pitch) Power 3.3V Single power supply

Power consumption: 190mW in standby, 248mW when receiving EWBS Applicable frequency: UHF 470MHz ～ 806MHz Bandwidth: 6MHz/8MHz 1-seg Reception:

Approx. 13dB higher than Full-seg reception When area code is set, emergency warning is received only in the

pre-set areas.When area code is not set, emergency warning is emitted unconditionally.

Output of EWBS reception flag Emergency information is emitted from serial port.

Standard specification: UARTI2C, SPI specifications also available.

9

Functional Flow of EWBS Module

10

Receiving program of preset channel

Activate TS Analyzing Part

TMCC(B26) = 1No

Yes

Check area code

Make output of EWBS receiving flag

Searching character packets

Decoding character data

Make output of character information

Wide Applications of EWBS Module Public Electronic Signage

Small Display for home use

Incorporation into wrist watches

TV Receivers, Set-top Boxes

Accessories measuring instrument of reception sensitivity

11

Chapter 3Software of EWBS module

12

Commands of EWBS Module

115,200bps, 8bit, 1 stop bit, no parity, no flow control

Setting UART

Command Format

Header Body Trailer

STX0x02

TYPE0x1D

Cmdcode

ChkSUM

Data Size

Data EXT0x03

Command packet format (Host → Module)

Header Body Trailer

STX0x02

ACKNAK

Cmdcode

ChkSUM

Data Size

Data EXT0x03

Response packet format (module -> host)

13

ChkSUM : (STX) + (TYPE) + (CMD) + (ChkSUM) + (DataSize) + (DATA1) + (DATA2) + ... + (EXT) = 0x****00

List of Commands CMD_GET_EWBS_INFO (0x11)

Confirm the version of EWBS module

CMD_GET_EWBS_STATUS (0x26)

Obtain broadcasting conditions of EWBS signal

CMD_GET_EWBS_RSSI (0x27)

Obtain receiving conditions of EWBS signal

CMD_GET_EWBS_TXT (0x28)

Obtain character data of EWBS

CMD_GET_AREA_CODE (0x24)

obtain channel and area code information being monitored

CMD_SET_AREA_CODE (0x25)

Set channel and area code of the channel to be monitored

14

CMD_GET_EWBS_INFOConfirm the version of Module

Header Body Trailer

STX0x02

TYPE0x1D

Cmd0x11

SUM0xCD

Size 0x00

DataNone

EXT0x03


Header Body Trailer

STX0x02

ACK0x06

Cmd0x11

SUM0xF5

Size 0x0B

Data0x45 0x57 0x42 0x530x5F 0x6D 0x6F 0x64

0x01 0x03 0x10

EXT0x03

Response packet format (Module -> host)

Data : EWBS_mod ver.1.3.16

15

CMD_GET_EWBS_STATUSObtain receiving conditions of EWBS signal

Header Body Trailer

STX0x02

TYPE0x1D

Cmd0x26

SUM0xB8

Size 0x00

DataNone

EXT0x03


Header Body Trailer

STX0x02

ACK0x06

Cmd0x26

SUM0xB4

Size 0x01

Data0x03

EXT0x03

Response packet format (Module -> host)

Receiving “Data = 0x03 EWBS Signal”, and play out alert sound.

16

Flow of Emergency Signal ReceptionEWBS Module

[EWBS_out] → H

Host CPU

No

CMD_GET_EWBS_STATUS

(status)

CMD_GET_EWBS_TEXT

status_bit0 == 1

Yes

Completion of text reception

No (text_data_size=0)

(text_data_size+ Character_code)Yes

text_data_size=0Yes

EWBS Status Inquiry

Obtain character information

EWBS Reception

Command Response

No

Display of character data

End of EWBS[EWBS_out] → L

End of Alarm SoundSwitching off of character

data indication17

Chapter 3Applied example of EWBS module

18

Public Electronic Signage●Normally displaying information, ads, time, etc.●Upon receiving EWBS, the display is switched to warning information.

＋

Memory card

LED display

PC

insert

LAN

UARTUSBLAN

Control Unit

Media for information, ads, etc.

HDMI LCD Panel

Speaker

19

Example of Control Circuit of Public Electronic Signage

Beagle Bone BlackCPU Board

uSDLAN

USBHDMI

EWBSmodule

Antenna

UART

POWER

command

(3.3V)

GPIOEWBS_DET

GPIOSIREN

PC

LCD Panel

LED DisplayUSB Speaker

LED DisplayRS-232CUART

LED Display

20

List of Parts and Components

Item Reference Part Maker Quantity Comment

1C1,C3,C7,C9,C10,C12,C13,C14,C15,C16

GRM188R71C104KA01D MURATA 10 0.1uF

2 C2,C8,C11 GRM188R61C105KA93D MURATA 3 1uF

3 C4,C5,C6 GRM188R61A106KE69D MURATA 3 10uF

4 FB2,FB1 BLM21PG221SN1D MURATA 2 BLM21PG221SN1D

5 FB3 BLM18KG601SN1D MURATA 1 BLM18KG601SN1D

6 J1 PJ-102A CUI Inc. 1 PWR JACK

7 J2 0731000258 Molex 1 731000258

8 J3 LD09P33E4GV00LF Amphenol FCI 1 DB9

9 R1 MCR03ERTJ104 Rohm 1 100k

10 R2,R3,R6,R7,R8 MCR03ERTJ220 Rohm 5 22

11 R4,R5,R9 MCR03ERTJ103 Rohm 3 10k

12 U1 LMS33460MG/NOPB TI 1 LMS33460MG/NOPB

13 U2 EWBSmodule Century 1 EWBSmodule

14 U3 ST3232CDR Stmicro 1 ST3232CDR

15 Z1 BeagleBoneBlack GHI Electronics 1 Beagle Bone Black

22

Example of Small Display for home use

EWBSmodule

Antenna

UART

POWER

command

(3.3V)

GPIOEWBS_DET

GPIOSIREN

CPUPOWER

I2CTEXT

GIPODAC

SOUND

CharacterDisplay

Switch

GP

IO

23

List of Parts and ComponentsItem Reference Part Maker Quantity Comment

1 CN1 10118192-0001LF Amphenol FCI 1 microUSB

2 CN2 PRPC005SAAN-RC Sullins 1 CON5

3C1,C3,C8,C9,C10,C11,C12,C13,C14,C16,C17,C18,C19

GRM188R71C104KA01D MURATA 13 0.1uF

4 C2 GRM188R61C105KA93D MURATA 1 1uF

5C4,C5,C6,C7,C15,C20,C21,C22

GRM188R61A106KE69D MURATA 8 10uF

6 D1 GSE6V8UNX5F GLOBALTECH 1 GSE6V8UNX5F

7 D2,D3 RB050L-40 Rohm 2 RB050L-40

8 D4 RB521S-30TE61 Rohm 1 RB521S-30TE61

9 FB2,FB1 BLM21PG221SN1D MURATA 2 BLM21PG221SN1D

10 FB3,FB4,FB5,FB6 BLM18KG601SN1D MURATA 4 BLM18KG601SN1D

11 J1 0731000258 Molex 1 731000258

12 J2 PJ-102A CUI Inc. 1 PWR JACK

13 J3 MJ-3536N CUI Inc. 1 PHONE JACK

14 R1,R2,R5,R6,R7,R9,R10 MCR03ERTJ220 Rohm 7 22

15 R3,R4,R8 MCR03ERTJ103 Rohm 3 10k

16 R11,R17 MCR03ERTJ104 Rohm 2 100k

17 R12,R13,R14,R15,R18,R19 MCR03ERTJ472 Rohm 6 4.7k

18 R16 1 R*

19 R20 MCR03ERTJ221 Rohm 1 220


21 R22,R25 MCR03ERTJ151 Rohm 1 150


23 SW1 OS102011MS2QN1 C&K 1 Slide Switch

24 SW2,SW3,SW4 3-1825910-5 TE Connectivity 3 Tactile Switches

25 U1 EWBS module Century 1 EWBSmodule

26 U2 STM32F072C8T6 STmicro 1 STM32F072C8T6

27 U3 GS1117Y33F GLOBALTECH 1 GS1117Y33F

28 U4 LMS33460MG/NOPB TI 1 LMS33460MG/NOPB

29 U5,U6 SN74LVC1G04DCKR TI 2 SN74LVC1G04DCKR

30 U7 NJM2737V JRC 1 NJM2737V

31 VR1 3314H-1-203 Bourns 1 20k(v)

32 X1 CSTCE8M00G55-R0 MURATA 1 CSTCE8M00G55-R0

33 Y1 PKM17EPP-2002-B0 MURATA 1 PKM17EPP-2002-B0

34 ZD1 ACM1602NI Xiamen Zettler 1 LCD 16x2 Character Display25

Evaluation of Reliability

Standard of CapacitorsMaximum Temperature: Rated maximum temperature minus 20 degrees Celsius or below. Consideration of self heating value and ambient temperature required.Voltage: Rated voltage x 0.6 or below

Resistance StandardPower: Rated power x 0.6 or belowVoltage: Rated voltage x 0.8 or below

Rated Voltage = √(rated power x resistance value)

Inductor StandardMaximum Temperature: : Rated maximum temperature minus 20 degrees Celsius or below. Consideration of self heating value and ambient temperature required.

Derating evaluation of parts makes it possible to increase the reliability of the module.

26

SemiconductorsPower Voltage, Terminal Input Voltage: Within rated valuesMaximum Output Current: Rated Current x 0.8 or belowMaximum junction temperature: Rating upper temperature minus 20 degrees

Celsius or below. Consideration of self heating value and ambient temperature required.

ConnectorsSurface Temperature: Rated Maximum Temperature minus 20 degrees Celsius or below. Consideration of self heating value and ambient temperature required. Maximum Voltage: Rated Voltage x 0.5 or below.

27

*The evaluation standards here are for reference only. Standards of acceptance, as well as items to be checked are to be determined by the party concerned.

Reference Type Part Number Manufacturer

Voltage Temperature

Jud

gmen

t

Vo

ltag

e-R

ated

Der

atin

g ra

te

Der

atin

g V

olt

age

Op

erat

ing

Vo

ltag

e

Tem

per

atu

re-R

ated

Der

atin

g Te

mp

erat

ure

Op

erat

ing

Max

imu

m T

em

per

atu

re

V ％ V V ℃ ℃ ℃

C1 Ceramic(chip) GRM188R71C104KA01D MURATA 16.0 60 9.6 5.3 125 105 45 OK



C4 Ceramic(chip) GRM188R61A106KE69D MURATA 10.0 60 6.0 5.3 125 105 45 OK

C5 Ceramic(chip) GRM188R61A106KE69D MURATA 10.0 60 6.0 5.3 125 105 45 OK

Capacitors

●Capacitor StandardMaximum Temperature: Rated Maximum Temperature minus 20 degrees Celsius or

below. Consideration of self heating value and ambient temperature required.Voltage: Rated Voltage x 0.6 or below

28

Resistors

●Resistor StandardPower: Rated Power x 0.6 or belowVoltage: Rated Voltage ＝ √(Rated Power x Resistance Value)


Res

ista

nce

Power Voltage

Co

nd

itio

n

Po

wer

Der

atin

g P

ow

er

Op

erat

ing

Vo

ltag

e

Op

erat

ing

Cu

rren

t

Op

erat

ing

Po

wer

Cal

cula

ted

Rat

ing

Vo

ltag

e

Vo

ltag

e-R

ated

Der

atin

g V

olt

age

Op

erat

ing

Vo

ltag

e

Ω W W V ｍA W ＶＶ V Ｖ

R1 Thick Film MCR03ERTJ220 Rohm 22.0 0.100 0.060 0.900 40.909 0.037 1.5 50 1.2 0.9 OK

R3 Thick Film MCR03ERTJ103 Rohm 10,000.0 0.100 0.060 3.450 0.345 0.001 31.6 50 25.3 3.5 OK


R20 Thick Film MCR03ERTJ103 Rohm 220.0 0.100 0.060 3.450 15.682 0.054 4.7 50 3.8 3.5 OK


29

Inductors, Coils, Ferrite Beads

●Inductor StandardMaximum Temperature: Rated Maximum Temperature minus 20 degrees Celsius or

below. Consideration of self heating value and ambient temperature required.


Temperature Voltage

Co

nd

itio

n

Tem

per

atu

re-R

ated

Der

atin

g Te

mp

erat

ure

Op

erat

ing

Am

bie

nt

Tem

per

atu

re

Tem

per

atu

re R

ise

Cu

rren

t-R

ated

Op

erat

ing

Cu

rren

t

op

erat

ing

tem

per

atu

re r

ise

Op

erat

ing

tem

per

atu

re

Vo

ltag

e -

Rat

ed

Der

atin

g V

olt

age

Op

erat

ing

Vo

ltag

e

℃ ℃ ℃ ℃ mA mA ℃ ℃ V V V

FB1 FERRITE BEAD BLM21PG221SN1D MURATA 125 105 45 40.0 2000.0 500.0 2.5 47.5 100.0 50.00 5.25 OK

FB2 FERRITE BEAD BLM21PG221SN1D MURATA 125 105 45 40.0 2000.0 500.0 2.5 47.5 100.0 50.00 5.25 OK

FB3 FERRITE BEAD BLM18KG601SN1D MURATA 125 105 45 40.0 1300.0 500.0 5.9 50.9 100.0 50.00 5.25 OK



30

Incorporation into STBCharacter information can be superimposed regardless of video receiving channel.

HDMI

Character information of power control is displayed by HDMI CEC function.

Alert sound activated via STB.

Antenna Distributor

EWBSmodule

TunerModule

Screencontroller

HDMII/F

character information TV Powercontrol

HDMIout

Siren

31

Incorporation into TV receivers

Antenna Distributor

EWBSmodule

TunerModule

Screencontroller

LCDcontroller

character information

PS control

PowerSupply

DisplayPanel

(EWBS_out)

Character information can be superimposed for automatic start-up, regardless video receiving channel.

32

Outline of EWBS Module - DiBEG · measuring instrument of reception sensitivity 11. Chapter 3...

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