MPEG DVB ATSC DTV HDTV SDTV MPEG 3/14/01Sencore Inc, 20011 Testing 608 and 708 Closed Caption Streams By Stephane Billat Application Engineer Sencore Inc.

3/14/01 Sencore Inc, 2001 1

MPEG

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Testing 608 and 708 Testing 608 and 708 Closed Caption StreamsClosed Caption Streams

By Stephane Billat

Application Engineer

Sencore Inc

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MPEG

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The CC Technical ChallengeThe CC Technical Challenge

Insert Closed Caption into ATSC Streams and recover them for use on ATSC compatible displays

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The CC Technical ChallengeThe CC Technical Challenge

Insert Closed Caption into ATSC Streams and recover them for use on ATSC compatible displays

Problem: ATSC CC is new, powerful, complex, has almost unlimited combinations.

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The CC Technical ChallengeThe CC Technical Challenge

Insert Closed Caption into ATSC Streams and recover them for use on ATSC compatible displays

Problem: ATSC CC is new, powerful, complex, has almost unlimited combinations.

Solution: Need for independent testing

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CC in the ATSC StreamCC in the ATSC Stream

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Analog 608 CCAnalog 608 CC

Field-1 / Channel-1 services• CC1=Primary caption service• CC2=Special non-sync caption service

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Analog 608 CCAnalog 608 CC

Field-1 / Channel-1 services• CC1 = Primary caption service• CC2= Special non-sync caption service• T1 = First text service 15-row text box over all

screen• T2 = Second text service (WEB TV)• T2 in field-1 is also used for the EIA-746

transmission of Web Url: www.sencore.com.

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Analog 608 CCAnalog 608 CC

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Analog 608 CCAnalog 608 CC

Field-2 / Channel-2 services• CC3 = Alternative language-1• CC4 = Alternative language-2

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Analog 608 CCAnalog 608 CC

Field-2 / Channel-2 services• CC3 = Alternative language-1• CC4 = Alternative language-2• T3 = Third text service unused at present• T4 = Fourth text service unused at present• XDS

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Analog 608 CC featuresAnalog 608 CC features

• Roll UpRoll Up• Pop onPop on• Background colorBackground color• Few special effect Few special effect • Limited in bandwidthLimited in bandwidth

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Analog 608 CCAnalog 608 CC

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Digital 708 CC FeaturesDigital 708 CC Features

• Multiple windows (7)• Many effects

Drop shadowTranslucentDifferent types of borders. Pen typesFonts Languages

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Digital 708 CCDigital 708 CC

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Digital 708 CCDigital 708 CC

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708 Window Definition View708 Window Definition View

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708 Window Style View708 Window Style View

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708 Pen Style View708 Pen Style View

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CC logs creationCC logs creation

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Other FeaturesOther Features

• Select display mode in presentation or decode order.• Useful in establishing delay in the insertion & its relation to the picture.

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ConclusionConclusion

• CC708 includes 608 and new CC

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ConclusionConclusion

• CC708 includes 608 and new CC

• Challenge: Insertion into ATSC Stream

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ConclusionConclusion

• CC708 includes 608 and new CC

• Challenge: Insertion into ATSC Stream

• Need for CC independent testing

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For More InformationFor More Information

Side of the room demo of

Analysis CC stream

Or

Contact Stephane Billat

1-800-SENCORE x279

[email protected]