LG Digital Cable Ready (DCR) DTV SVC Training Manual

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DCR SVC Training Manual IDS Group Digital TV Laboratory CHA, SangHoon [email protected]

Transcript of LG Digital Cable Ready (DCR) DTV SVC Training Manual

DCR SVC Training Manual

IDS Group Digital TV LaboratoryCHA, SangHoon

[email protected]

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DCR & CableCARD

DIGITAL CABLE READY HDTVA “plug-and-play” DTV is a television that you can plug

directly into your cable system and receive analog

and most digital cable services without the need for a

set-top box. The cable and consumer electronics

industries have dubbed these types of televisions

“digital cable ready” or “DCR.”

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DCR & CableCARD

CableCARDTM

Digital plug-and-play will not work quite like analog.

For digital plug-and-play, you’ll probably need to get a

security card (also known as a “CableCARDTM”) from

your local cable operator. The security card will permit

you to watch scrambled programming and premium

services, to which you’re subscribed.

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DCR & CableCARD

CEA-NCTA Agreement

• Signed at Dec 19, 2002 • An agreement between cable operators and the consumer electronics industry• How to offer digital programming over cable lines to current and future digital

televisions without the need for a set-top box• “Unidirectional" cable-ready digital television sets (called UDCP or UDRD)

Conditional access mechanismSeparate CableCARD(POD) cardOnly receive information from the headend (one-way)

• Cable industry : Comcast, Cox, Time Warner, etc. (8 companies)• CE industry : Philips, Panasonic, Zenith, Samsung, Sony, etc (14 companies)

CEA : Consumer Electronics AssociationNCTA : National Cable & Telecommunications AssociationPOD : Point-Of-DeploymentUDCP : Uni-Directional Cable Product, UDRD : Uni-Directional Receiving Device

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DCR & CableCARD

CEA-NCTA Agreement

• First Verification started at Feb 2004 (VW18) based on PICS/ATP• DCR TV can receive

Off-air HD / HD through cableOff-air/Cable Analog & Digital

• But, DCR TV doesn’t supportVOD, Impulse PPVEPG service provided by MSO

DCR : Digital Cable Ready PICS : Protocol Implementation Conformance StatementsATP : Acceptance Test PlanPPV : Pay Per ViewOff-air : Terrestrial retransmission through cable

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DCR & CableCARD

Cable TV Broadcasting

TV Station/Network

Cable Headend/“Plant”

Satellite DishAntenna

Fiber

Node

House

House

Node

Using Cable line, bi-directional communication is possible

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DCR & CableCARD

• CableCARD (POD) vendorsMotorola, Scientific Atlanta, SCM/NDS

• Cable HeadEnd vendorsMotorola, Scientific Atlanta, Harmonic

• Cable MSO(Multiple System Operator)sComcast, Time Warner, Charter, Cox, Adelphia, Bright House,Mediacom, Insight, CSC Holdings, Cable One, Advance/Newhouse, etc.

Cable Industry in U.S.

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DCR & CableCARD

Inband6 MHz

OOB QPSK

Tuner

QAM

QPSK

Demod

NTSC

CPU- User I/F - Functions- Apps- VBI decode

- etc.

Multimedia Processor

-NTSC coder -Graphics processor

CA Decrypt

& CP Encrypt (POD)

CP Decrypt & Demux

A/V Decode

1394A + CP

A V D

SPTS

AC-3 Out

L/R Out

S-Video OutCh-3/4 Out

Video OutCable

In

HDMI/DVI Out

DCR Architecture

Inband tuner : FAT tunerOOB tuner : FDC tuner CA : Conditional AccessCP : Copy ProtectionOOB : Out Of Band

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CAS & CP Function

Host-CableCARD Interface

QPSK Tuner& Demod

QAM Tuner& Demod

CA Decrypt & CP Encrypt

CableCARD

DCR(Host)

MPEG2Demux

& Decode

CPUUser I/F

OS, Memory

1394 + 5C

Protected by Protected by Cable System, Cable System,

Conditional Conditional Access SystemAccess System

Protected by Protected by CableCARDCableCARD--CP CP

SystemSystem

CP-Encrypted Stream

CA-Encrypted Stream

CP Decrypt

Clear Stream

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In-Band & OOB Frequency Specification

In Band

5 MHz

42Mhz70Mhz 130Mhz 864Mhz450/550Mhz

Analog FAT/QAM

54Mhz

OOB RDC

OOB FDC

RDC : Reverse Data ChannelOOB : Out of BandFDC : Forward Data ChannelFAT : Forward Application TransportPSI : Program Service InformationSI : Service Information

Upstream

Downstream

QPSK

QPSKBit Rate : 1.544/2.048/3.088Mbps

Bit Rate : 1.544/2.048/3.088Mbps

MPEG-2RS CodingInterleavingTrellis Code 64/256QAM:

OOB OOB

1. HeadEnd Sends Cable Channel Info (SI) through this band

Frequency

1. DCR doesn’t use this band because DCR has Uni-directional, downstream functionality only.

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Authorization & Validation Processes

Authorization & Validation Processes

• In order to activate CA service(called low-value service) and to receive Cable channel map, “Authorization process” is needed.

Serial number and CableCARD ID is needed.During this process, CableCARD reset may be occurred.After this process is finished with successful, user can navigate cable channel map & can watch CA Encrypted services which is subscribed by the user.

• In order to activate CP service(called high-value service) also, “Validation process” is needed.

Host/CableCARD ID is needed.HeadEnd sends Validation message through OOB channel.After Validation message is received into the CableCARD, user can watch CP Encrypted services also.

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DCR Functionalities

DCR Functionalities

• Conditional Access Function • Copy Protection Function• Cable menu & MMI(Man Machine Interface) Function• Digital Certificates• CableCARD reset Function• EAS(Emergency Alert System) Function• Host Diagnostics Function• CableCARD Firmware Upgrade Function• Error Reporting Function

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Cable Menu & MMI(Man Machine Interface)

• CableCARD uses MMI(Man Machine Interface) function to communicate with the user.

- CableCARD displays various user notification information through MMI window

- Host/CableCARD ID information

- the error reporting of Host’s certification data

Cable Menu Example : SA CableCARD case

MMI Example : SA CableCARD case

• Using Cable Menu, user can check status of various CableCARD functions.

- The lists of this menu is vary, depending on the CableCARD manufacturer.

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Digital Certificates Data

Digital Certificates Data

• Every TV and CableCARD has Digital Certificates Data to identify itself.Host/CableCARD ID is determined from the value of each Digital Certificates Data.

• CableCARD side invalid Certificate case

“Please call your cable operator and report an invalid CableCARD” error message will be displayed.

• DTV side Invalid or Without Certificate case

“There was a technical problem during the authorization process. This production may have some component failure or may not be designed to be fully compatible with digital cable television service. Please contact the manufacturer or the retailer.” MMI message will be displayed.

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CableCARD Reset

CableCARD Reset

• When the DCR TV or CableCARD think other side go into abnormal state, set CableCARD reset to recover Host/CableCARD interface.

161-xx technical problem case.

• Even when the normal state but Host/CableCARD interface is needed to reboot, set CableCARD reset.

CableCARD firmware upgrade case.HeadEnd Authorization case.

• There is two type of CableCARD resetPCMCIA reset(Cold reset, H/W level reset)POD reset(Worm reset, S/W level reset)

• When the CableCARD reset is occurred, and if user is watching CA or CP Encrypted service at that time, A/V still effect will be occurred during about 20 seconds.

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EAS(Emergency Alert System)

FireFire FloodFlood TornadoTornado

EAS (InEAS (In--band, OOB)band, OOB)

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Host Diagnostics

To check the state of various TV functions related to the CableCARD, uses Host Diagnostic menu.

- press Menu->CABLE->”0”->”0”->”0” to get into Host Diagnostics menu.- Cable Channel List’s status- FAT, FDC status- H/W & F/W version

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CableCARD Firmware Upgrade

CableCARD Firmware Upgrade

• When the CableCARD Firmware Upgrade is needed, HeadEnd activates CableCARD Firmware Upgrade operation.

Delayed Upgrade mode (only at the stand-by state)Immediate Upgrade mode (stand-by or power-on state)

• CableCARD Firmware Upgrade shouldn’t be interrupted by other operation.During this operation, CableCARD Firmware Upgrade reporting message is being displayed and whole remote control key will be disabled with temporary.Only SA uses CableCARD Firmware Upgrade protocol and SA uses in-band tuner for this operation.Motorola uses their unique technique for the CableCARD firmware Upgrade and uses OOB tuner for this operation.

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Error Reporting

Error Reporting

• By the standard(SCTE28 Appendix E), in the case of pre-defined error case, DCR should display Error Reporting called 161-xx technical problem and/or set CableCARD reset to recover this error status.

Failure mechanism is not the DCR but the CableCARD.“xx” digits are the index of this error.

Error Reporting Example