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DTV CaptioningDTV Captioning
Transitioning from 608 to 708Transitioning from 608 to 708
Gerry Field, ManagerGerry Field, Manager
DTV Access ProjectDTV Access Project
CPB/WGBH National Center for Accessible MediaCPB/WGBH National Center for Accessible Media
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001, Washington, DCMarch 14, 2001, Washington, DC
DTV Stations On AirDTV Stations On Air
184 in 62 markets184 in 62 markets
as of March 8, 2001as of March 8, 2001
http://www.nab.org/newsroom/pressrel/dtvstations.asphttp://www.nab.org/newsroom/pressrel/dtvstations.asp
121 in March 2000121 in March 2000
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001, Washington, DCMarch 14, 2001, Washington, DC
Gerry Field, WGBH-NCAMGerry Field, WGBH-NCAM
DTV Stations On AirDTV Stations On Air
Simulcast, Upconversion of NTSC Simulcast, Upconversion of NTSC signalssignals
Preservation of current servicesPreservation of current services
Migration to native DTV Migration to native DTV programming and caption servicesprogramming and caption services
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001, Washington, DCMarch 14, 2001, Washington, DC
Gerry Field, WGBH-NCAMGerry Field, WGBH-NCAM
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
ProductionProduction
ContributionContribution
DistributionDistribution
EmissionEmission
ReceptionReception
DecodeDecode
DisplayDisplay
EIA-608BEIA-608B
Vertical Blanking IntervalVertical Blanking Interval
Line 21Line 21
960 bps960 bps
Field 1 = CC1, CC2, (T1, T2)Field 1 = CC1, CC2, (T1, T2)
Field 2 = CC3, CC4, (T3, T4, XDS)Field 2 = CC3, CC4, (T3, T4, XDS)
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001, Washington, DCMarch 14, 2001, Washington, DC
Gerry Field, WGBH-NCAMGerry Field, WGBH-NCAM
EIA-608BEIA-608B
Vertical Blanking IntervalVertical Blanking Interval
Line 21Line 21
Field 1 Field 2Field 1 Field 2
CC1=English CC3=SpanishCC1=English CC3=Spanish
T2=iTV URLs XDS=Time, V-ChipT2=iTV URLs XDS=Time, V-Chip
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001, Washington, DCMarch 14, 2001, Washington, DC
Gerry Field, WGBH-NCAMGerry Field, WGBH-NCAM
EIA-708BEIA-708B
MPEG-2MPEG-2
Picture User DataPicture User Data
DTVCC Transport Channel = 9600 bpsDTVCC Transport Channel = 9600 bps
carriescarries
608 and 708 caption data608 and 708 caption data
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001, Washington, DCMarch 14, 2001, Washington, DC
Gerry Field, WGBH-NCAMGerry Field, WGBH-NCAM
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Caption Data in an ATSC Transport StreamCaption Data in an ATSC Transport Stream
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
VideoVideoEncoderEncoder
PSIPPSIPGeneratorGenerator
PMTPMTGeneratorGenerator
MMUUXX
DTVCC DataDTVCC Data
CaptionCaptionServiceServiceInformationInformation
TransportTransportStreamStream
EIA-708B - Figure 21 - EIA-708B - Figure 21 - Interface of Caption Data to ATSC Emission Encoding EquipmentInterface of Caption Data to ATSC Emission Encoding Equipment
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
FCC RulesFCC Rules www.fcc.govwww.fcc.gov
• • 47 CFR Part 15.119 47 CFR Part 15.119 Decoder Requirements, Analog TelevisionDecoder Requirements, Analog Television
• • 47 CFR Part 15.122 47 CFR Part 15.122 Decoder Requirements, Digital TelevisionDecoder Requirements, Digital Television
• • 47 CFR Part 79 47 CFR Part 79 Programming RequirementsProgramming Requirements
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
ATSC StandardsATSC Standardswww.atsc.orgwww.atsc.org
• • A/53 A/53 ATSC Digital Television Standard (Sept 1995)ATSC Digital Television Standard (Sept 1995)
• • A/52 A/52 ATSCATSC Digital Television Audio Standard (Sept 1995)Digital Television Audio Standard (Sept 1995)
• • A/65 A/65 PSIP (Rev. A and Amend. No.1) (May 2000)PSIP (Rev. A and Amend. No.1) (May 2000)
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
CEA StandardsCEA Standardswww.ce.orgwww.ce.org
Available through Global Engineering DocumentsAvailable through Global Engineering Documents
• • EIA-608-B EIA-608-B Line 21 Data Services (October 2000)Line 21 Data Services (October 2000)
• • EIA-708-B EIA-708-B Digital Television Closed Captioning Digital Television Closed Captioning
(December 1999)(December 1999)
• • EIA-CEB8 EIA-CEB8 Consideration of EIA-608-B Data Within Consideration of EIA-608-B Data Within
the DTV (EIA-708-B) Construct (October 2000)the DTV (EIA-708-B) Construct (October 2000)
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
CEA StandardsCEA Standardswww.ce.orgwww.ce.org
Available through Global Engineering DocumentsAvailable through Global Engineering Documents
EIA-CEB8EIA-CEB8
Preservation of NTSC Line 21 DataPreservation of NTSC Line 21 DataUpconversion to DTV, transport, receiver, STB, analog outUpconversion to DTV, transport, receiver, STB, analog out
Use of 608 Data by DTV ReceiversUse of 608 Data by DTV ReceiversDTV devices should use 708, can use 608 if 708 not availableDTV devices should use 708, can use 608 if 708 not available
Independent Control of Audio and Caption ServicesIndependent Control of Audio and Caption Services
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
SMPTE StandardsSMPTE Standardswww.smpte.orgwww.smpte.org
• • SMPTE 333M-1999 Television SMPTE 333M-1999 Television DTV Closed-Caption Server to Encoder InterfaceDTV Closed-Caption Server to Encoder Interface
• • SMPTE 334M-2000 Television SMPTE 334M-2000 Television Vertical Ancillary Data Mapping for Bit-Serial InterfaceVertical Ancillary Data Mapping for Bit-Serial Interface
• • SMPTE 341M-2000 TelevisionSMPTE 341M-2000 Television Format for Non-PCM Audio and Data in an AES3Format for Non-PCM Audio and Data in an AES3
Captioning Data Type Captioning Data Type (also see SMPTE 337M to 340M)(also see SMPTE 337M to 340M)
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Local Emission StationLocal Emission StationCaption EncodingCaption Encoding
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
Cable TelevisionCable Television
SCTE Digital Video SubcommitteeSCTE Digital Video Subcommitteeftp://ftp.cablelabs.com/pub/scte/dvs/pdfftp://ftp.cablelabs.com/pub/scte/dvs/pdf
• • SCTE DVS 053r7SCTE DVS 053r7 Standard for Carriage of NTSC VBI data in Cable Standard for Carriage of NTSC VBI data in Cable Digital Transport Streams (July 2000)Digital Transport Streams (July 2000)
• • SCTE DVS 157r1SCTE DVS 157r1 Proposed Standard Methods for Carriage of Closed Captions Proposed Standard Methods for Carriage of Closed Captions
and Non Real-Time Sampled Video (March 1999)and Non Real-Time Sampled Video (March 1999)
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV Closed Captioning Standards DTV Closed Captioning Standards
and Related Documentsand Related Documents
Cable TelevisionCable Televisionhttp://www.opencable.com/specifications.htmlhttp://www.opencable.com/specifications.html
OpenCable Set-top Terminal Functional RequirementsOpenCable Set-top Terminal Functional Requirements
for Uni-Directional Cablefor Uni-Directional Cable
OpenCable Set-top Terminal Functional RequirementsOpenCable Set-top Terminal Functional Requirements
for Bi-Directional Cablefor Bi-Directional Cable
OCI-N Cable Network Interface SpecificationOCI-N Cable Network Interface Specification
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
STT-BDI-C-52 and STT-UDI-C-49: All set-top terminals submitted to Cable Labs for STT-BDI-C-52 and STT-UDI-C-49: All set-top terminals submitted to Cable Labs for certification for delivery after July 1, 2002 shall process the Digital Television certification for delivery after July 1, 2002 shall process the Digital Television (DTV) Closed Captioning information, when available in the MPEG-2 Picture User (DTV) Closed Captioning information, when available in the MPEG-2 Picture User Data, as specified in EIA-708B, section 9 and delivered according to ATSC A/53 Data, as specified in EIA-708B, section 9 and delivered according to ATSC A/53 amendment 1 (with cc_type set to '10' or '11'). This caption data, when present,amendment 1 (with cc_type set to '10' or '11'). This caption data, when present,shall be passed through to a DTV display via the IEEE-1394 interface. shall be passed through to a DTV display via the IEEE-1394 interface.
If the set top terminal provides component analog or uncompressed digital output If the set top terminal provides component analog or uncompressed digital output streams, decoding and display of this caption data shall be provided by the set top streams, decoding and display of this caption data shall be provided by the set top terminal according to FCC rules part 15.122. If the set top terminal provides an terminal according to FCC rules part 15.122. If the set top terminal provides an NTSC analog video output, and the network stream dual carries EIA-608B caption NTSC analog video output, and the network stream dual carries EIA-608B caption data transported according to SCTE DVS053r7 or DVS 157r1, then the set top data transported according to SCTE DVS053r7 or DVS 157r1, then the set top terminal shall reconstruct line 21 VBI in the analog output as required by FCC terminal shall reconstruct line 21 VBI in the analog output as required by FCC rules part 15.122 (a)(2).rules part 15.122 (a)(2).
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Current DevelopmentsCurrent Developments
DTV Caption Test DTV Caption Test BitstreamsBitstreams
CEA R4.3 WG1CEA R4.3 WG1DTV Station ProjectDTV Station Project
NCAM DTV Access ProjectNCAM DTV Access Project
ATSC/CEA PlugfestsATSC/CEA PlugfestsJune, September 2000June, September 2000
January 2001January 2001Spring/Summer 2001Spring/Summer 2001
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Current DevelopmentsCurrent Developments
Caption Encoder ProductCaption Encoder Product
Local EmissionLocal Emission
Network DistributionNetwork DistributionVANC in 292VANC in 292
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Current DevelopmentsCurrent Developments
Education ActivitiesEducation Activities
ATSC IS ATSC IS S3 Working GroupS3 Working Group
Distribution ModelsDistribution ModelsCDP TutorialCDP Tutorial
Caption File FormatCaption File FormatWeb Based ResourcesWeb Based Resources
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Current DevelopmentsCurrent Developments
Education ActivitiesEducation Activities
CEACEAR4.3 WG1R4.3 WG1
Additional Test MaterialsAdditional Test Materials708 Implementation Guide708 Implementation Guide
Cable InteroperabilityCable Interoperability
DTV CAPTION SUMMITDTV CAPTION SUMMITMarch 14, 2001March 14, 2001Washington, DCWashington, DC
Follow Up to the Follow Up to the SummitSummit
Web ResourcesWeb Resources
Working Group Conference Working Group Conference Calls Calls
Coordination of Coordination of ATSC, CEA, SMPTE, SCTE ATSC, CEA, SMPTE, SCTE
effortsefforts