Jai2008

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Jai2008

  1. 1. ! Este documento é uma versão preliminar de: Barbosa, S.D.J. & Soares, L.F.G. TV digital interativa no Brasil se faz com Ginga: Fundamentos, Padrões, Autoria Declarativa e Usabilidade. Em T. !"#$%&'() Kowaltowski & K. Breitman (orgs.) Atualizações em Informática 2008. Rio de Janeiro, RJ: Editora PUC-Rio, 2008. pp.105-174. *) Esta versão em formato A4 está disponível apenas para facilitar a impressão e não pode ser distribuída com fins comerciais. Pedimos que as citações e referências sejam realizadas sobre a obra publicada, obedecendo a numeração de suas páginas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  7. 7. ! ! ^!1#18'$.!0-.1#O'#-%!5'!WF!5#P#8.O!.5%8%+!%!7.5-E%!C=Z6@J!7.-.!.!<%5#:#<.VE%! 5%!;+5#%!7-#&<#7.O!5'!+$!7-%P-.$.!kU/SW!S/A!KHjMG@G!GMMnl2!<%$!.1!<.-.<8'-]18#<.1! .7-'1'&8.5.1!&.!W.0'O.!gBKB! Tabela 3.1.Codificação de áudio no sistema brasileiro de TV digital. ! L181#%(215);.M(5)1)NO31.5) L181#%(215)=(2%P%1.5) ="-2G() 9"^`9Z?!KJJLj@g![C=Z6@J!UU?! 9"^`9Z?!KJJLj@g![C=Z6@J!UU?! Q$31'R=126.') UU?R3J![7.-.!$+O8#<.&.O!HBK! oZ@UU?!IGR3g![5%#1!<.&.#1! oZ@UU?!IKR3J![7.-.!'18b-'%! +"M")-1)"9(5%2"/19) Jmto)! Jmto)! *CHCHC) !(-.6.8"FG()-(),$-1() >$! 1#&.O! 5'! I]5'%! 5#P#8.O! <.--'P.! $+#8.! #&:%-$.VE%! -'5+&5.&8'! '17.<#.O$'&8'! [-'5+&5d&<#.!#,)+'NL/'0+.!'!8'$7%-.O$'&8'![-'5+&5d&<#.!#,)*+NL/'0+.$B!! $!Z +$! ,+.5-%!5'!+$!I]5'%!&E%!%<%--'2!'$!P'-.O2!$+5.&V.!.0-+78.!5'!+$!7#T'O!7.-.!+$!7#T'O! <%&1'<+8#I%2! 'T<'8%! &%1! <%&8%-&%1! 5%1! %0e'8%1B! Z$! 7.-8#<+O.-2! 7%5'$%1! '$7-'P.-! .! <%5#:#<.VE%! *=Z6! k9"^`9Z?! KMLKm@K! KLLJl! '$! <.5.! ,+.5-%! 5%! I]5'%! 7.-.! 8#-.-$%1! 7-%I'#8%!5'11.!-'5+&5d&<#.!'17.<#.OB!Z11.!8b<&#<.2!.7O#<.5.!,+.5-%!.!,+.5-%2!1'!<%&18#8+#! .! 0.1'! 5.! <%5#:#<.VE%! <Y.$.5.! C*=Z6! [C%8#%&! *=Z6B! Z&8-'8.&8%2! .%! '$7-'P.-$%1! '11.! <%5#:#<.VE%2! '18.-'$%1! O'I.&5%! '$! <%&8.! .7'&.1! .! -'5+&5d&<#.! #&8-.@,+.5-%2! ,+.&5%! .! $.#%-! -'5+&5d&<#.! 7%5'! '18.-! &.1! #&:%-$.Vc'1! <%&8#5.1! '$! ,+.5-%1! <%&1'<+8#I%1![-'5+&5d&<#.!#&8'-@,+.5-%12!%!,+'!b!'T7O%-.5%!&%!7.5-E%!C=Z6!I]5'%B! ! S%! 7.5-E%! C=Z6@G! I]5'%! k9"^`9Z?! KgmKm@G! GMMMl2! <.5.! 0O%<%! [<%&e+&8%! 5'! mTm!7#T'O1!7%5'!1'-!<%5#:#<.5%!+1.&5%!.7'&.1!.!#&:%-$.VE%!#&8-.@,+.5-%B!r+.5-%1!'$! ,+'!8%5%1!%1!0O%<%1!1E%!<%5#:#<.5%1!5'11.!:%-$.!1E%!5'&%$#&.5%1!,+.5-%1!9B! ! >$! $.<-%0O%<%! [<%&e+&8%! 5'! KjTKj! 7#T'O1! 7%5'! 8.$0b$! 1'-! <%5#:#<.5%! 5'! :%-$.! 7-'5#8#I.B! U! 7-'5#VE%! C=Z6! 7%5'! 1'-! :'#8.! 0.1'.5.! '$! ,+.5-%1! 7.11.5%1! '! '$! ,+.5-%1! :+8+-%1! 5.! 1',_D&<#.! 5'! +$! I]5'%B! r+.&5%! .! 7-'5#VE%! b!:'#8.!0.1'.5.!'$! +$! ,+.5-%!7.11.5%2!b!<%5#:#<.5%!%!'--%!5'!7-'5#VE%![5#:'-'&V.!5%!$.<-%0O%<%!,+'!1'!,+'-! <%5#:#<.-! 7.-.! %! $.<-%0O%<%! 5'! -':'-D&<#.! 5%! ,+.5-%! 7.11.5%2! +1.&5%! %1! $'1$%1! 7-%<'5#$'&8%1!+1.5%1!7.-.!%1!$.<-%0O%<%1!#&8-.@,+.5-%12!'!%!I'8%-!5'!$%I#$'&8%![,+'! 5;! .! 7%1#VE%! -'O.8#I.! 5%! $.<-%0O%<%! ,+'! 1'! ,+'-! <%5#:#<.-! 7.-.! %! $.<-%0O%<%! 5'! -':'-D&<#.! 5%! ,+.5-%! 7.11.5%B! r+.5-%1! <%5#:#<.5%1! +1.&5%! '11'! 8#7%! 5'! 7-'5#VE%! 1E%! <Y.$.5%1! ,+.5-%1! =B! S%! C=Z6@G! I]5'%2! .! 7-'5#VE%! b! 1'$7-'! 0.1'.5.! &%! 7-#$'#-%! ,+.5-%!5%!8#7%!9!%+!=2!.&8'-#%-B!C.<-%0O%<%1!8.$0b$!7%5'$!1'-!<%5#:#<.5%1!0.1'.5%1! &%! 7-#$'#-%! ,+.5-%! 9! %+! =2! 7%18'-#%-! %+! .&8'-#%-B! S'11'! <.1%! 8'-'$%1! 5%#1! ,+.5-%1! 5'! -':'-D&<#.! 7.-.! .! 7-%<+-.! 5%! $'OY%-! <.1.$'&8%B! U! <%5#:#<.VE%! 7%5'! 1'-! -'.O#).5.! 0.1'.5.! &%! ,+.5-%! .&8'-#%-2! &%! ,+.5-%! 7%18'-#%-2! %+! .#&5.! 0.1'.5.! &.! #&8'-7%O.VE%! 5%! ,+.5-%! .&8'-#%-! '! 7%18'-#%-B! r+.5-%1! <%5#:#<.5%1! +1.&5%! '11'! 8#7%! 5'! 7-'5#VE%! 1E%! <Y.$.5%1!,+.5-%1!/B! ! ^! 7.5-E%! C=Z6@G! I]5'%! .5$#8'! I;-#%1! :%-$.8%1! 5'! ,+.5-%1! '! 5#:'-'&8'1! -'1%O+Vc'1! 7.-.! .1! <%$7%&'&8'1! 5'! <-%$#&d&<#.! [1+0.$%18-.P'$! 5'! <-%$#&d&<#.B! ('! :.8%2! %! C=Z6@G! '17'<#:#<.! I;-#%1! <%&e+&8%1! 5'! 7.-d$'8-%1! 5'! -'18-#VE%2! ,+'! 1E%! 5':#&#5%1!&%1!1'+1!7'-:#1!'!&]I'#1B!>$!7'-:#O!'17'<#:#<.!.1!:.<#O#5.5'1!5'!<%5#:#<.VE%!,+'! 1'-E%! +8#O#).5.1! [7%-! 'T'$7O%2! 8#7%1! 5'! ,+.5-%12! 1+0.$%18-.P'$! '8<B! >$! &]I'O!
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  9. 9. ! 3.2.3.1. M ultiplexação de dados ^1!:O+T%1!5'!5.5%1!7%5'$!1'-!8-.&17%-8.5%1!.8-.Ib1!5'!1'-I#V%1!1]&<-%&%1![:-.<.$'&8'! .<%7O.5%12! 1#&<-%&#).5%1! [:%-8'$'&8'! .<%7O.5%1! %+! .11]&<-%&%1! [5'1.<%7O.5%1B! ^! 1'-I#V%!5'!8-.&17%-8'!1]&<-%&%!.11+$'!,+'!%1!:O+T%1!5'!5.5%1!1E%!1#&<-%&#).5%1!'&8-'!1#2! 1'P+#&5%! %! 7.-.5#P$.! 5'! '#T%! 5%! 8'$7%! [8#$'O#&'! 7'O.! .5#VE%! 5'! <.-#$0%1! 5'! 8'$7%! [8#$'18.$71B! ^1! :O+T%1! 5'! 5.5%12! &%! '&8.&8%2! &E%! '18E%! -'O.<#%&.5%1! i! 8'$7%-#).VE%! 5%1! :O+T%1! 5'! ;+5#%! 7-#&<#7.O! '! I]5'%! 7-#&<#7.OB! U! 4#P+-.! gBH! #O+18-.! %! 7-%<'5#$'&8%B! S%8'!,+'!%1!<.-#$0%1!5'!8'$7%!.11%<#.5%1!.%1!:O+T%1!5'!5.5%1!1E%!5#:'-'&8'1!5.,+'O'1! .11%<#.5%1!.%1!:O+T%1!5'!;+5#%!7-#&<#7.O!'!I]5'%!7-#&<#7.OB! W W 65@ X X !>65@ 6>;K(L 6>;K(L F :V%@)0 :V%@)0 F AD2)' <-"/+"<.4 Z 2.2'% Y$2"' <-"/+"<.4 ! Figura 3.5.Transporte de dados síncronos ! ^! 1'-I#V%! 5'! 8-.&17%-8'! 1#&<-%&#).5%! .11+$'! ,+'! %1! :O+T%1! 5'! 5.5%1! 1E%! 1#&<-%&#).5%1! '&8-'! 1#! '! 8.$0b$! <%$! %1! :O+T%1! 5'! ;+5#%! 7-#&<#7.O! '! I]5'%! 7-#&<#7.O2! 1'$7-'!1'P+#&5%!%!7.-.5#P$.!5'!'#T%!5%!8'$7%![8#$'O#&'2!7'O.!.5#VE%!5'!<.-#$0%1!5'! 8'$7%![8#$'18.$71B!S'11'!<.1%2!%1!<.-#$0%1!5'!8'$7%!.11%<#.5%1!.%1!:O+T%1!5'!5.5%1! 1E%!#P+.#1!i,+'O'1!.11%<#.5%1!.%1!:O+T%1!5'!;+5#%!7-#&<#7.O!'!I]5'%!7-#&<#7.OB! ! 4O+T%1! 5'! 5.5%1! &%! 8-.&17%-8'! 1]&<-%&%! '! 1#&<-%&#).5%! 1X! 7'-$#8'$! %! 1#&<-%&#1$%!,+.&5%!%!#&18.&8'!5'!8'$7%!5'!1#&<-%&#).VE%!b!5'8'-$#&]18#<%B!U7O#<.Vc'1! #&8'-.8#I.12! %&5'! .! 1#&<-%&#).VE%! b! 5.5.! '$! +$! 8'$7%! .O'.8X-#%! 5'8'-$#&.5%! 7'O%! +1+;-#%!8'O'17'<8.5%-2!.7O#<.Vc'1!%&5'!%!<%&8'f5%!b!P'-.5%!'$!8'$7%!5'!'T#0#VE%!'!&E%! 1'!7%5'!5'8'-$#&.-!%!8'$7%!'T.8%!%&5'!'I'&8%1!%<%--'-E%2!'!.7O#<.Vc'1!<+e%!<%&8'f5%!b! 5'8'-$#&.5%! '$! 8'$7%! 5'! 'T#0#VE%2! &E%! 7%5'$! 1'-! 1#&<-%&#).5.1! +1.&5%! %1! 1'-I#V%1! 1]&<-%&%!%+!1#&<-%&#).5%B!=.-.!8.&8%!'T#18'!%!1'-I#V%!5'!8-.&17%-8'!.11]&<-%&%B! ! "'-I#V%1! .11]&<-%&%1! #$7O#<.$! ,+'! &'&Y+$.! $.-<.! 5'!8'$7%![8#$'18.$7!'18;! .11%<#.5.! .%1! 5.5%1B! S%! '&8.&8%2! 7%5'! Y.I'-! 1#&<-%&#1$%! '&8-'! %1! I;-#%1! %0e'8%1! 8-.&17%-8.5%12!'!'&8-'!'11'1!%0e'8%1!'!%1!:O+T%1!5'!;+5#%!'`%+!I]5'%!7-#&<#7.OB!=.-.!8.&8%! %!7.-.5#P$.!5'!1#&<-%&#).VE%!5'!'#T%!5%!8'$7%! b!.0.&5%&.5%2!1'&5%!1+018#8+]5%!7'O%! 7.-.5#P$.! 5'! <.+1.O#5.5'`-'18-#VE%B! S%1! 1'-I#V%1! .11]&<-%&%12! e+&8%! <%$! %1! 5.5%1! b! $.&5.5%!%!.7O#<.8#I%![Y.<Y+-.5%!&.!4#P+-.!gBj2!,+'!'17'<#:#<.2!'$!+$.!O#&P+.P'$!5'! 7-%P-.$.VE%! '17'<]:#<.2! %! <%$7%-8.$'&8%! -'O.8#I%! 5%1! 5.5%12! 5%! ;+5#%! 7-#&<#7.O! '! 5%! I]5'%!7-#&<#7.O2!&%!8'$7%!'!&%!'17.V%B! W W 65@ X X !>65@ 6>;K(L 6>;K(L :V%@)0 :V%@)0 AD2)' <-"/+"<.4 Z 2.2'% Y$2"' <-"/+"<.4 ! Figura 3.6.Transporte de dados assíncronos ! ^! 1'-I#V%! .11]&<-%&%! b! .! f&#<.! :%-$.! 7.-.! .! 1#&<-%&#).VE%! <%$! 8'$7%! #&5'8'-$#&.5%B!ZO'2!&%!'&8.&8%2!'T#P'!+$.!O#&P+.P'$!7.-.!'17'<#:#<.VE%!5%!1#&<-%&#1$%! '2! &%! -'<'78%-2! +$.! $;,+#&.! <.7.)! 5'! #&8'-7-'8.-! '! 'T'<+8.-! %1! <%$.&5%1! 5'!
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  17. 17. ! Tabela 3.3. Ambientes de aplicações para receptores fixos e móveis Middleware Sistema de TVD Ambiente Declarativo Ambiente Procedural ACAP Americano/ATSC ACAP-X [ATSC A-101 2005] ACAP-J [ATSC A-101 2005] (linguagem declarativa = XHTML like; (linguagem não-declarativa = linguagem não-declarativa = ECMAScript) Java MHP Europeu/DVB-T DVB-HTML [ETSI TS 102 812 V1.2.2 2006] MHP [ETSI TS 102 812 V1.2.2 (linguagem declarativa = XHTML like; 2006] linguagem não-declarativa = ECMAScript) (linguagem não-declarativa = Java ARIB-BML Japonês/ISDB-T ARIB ! BML [ARIB B-24 2004] Opcional (GEM [ETSI TS 102 (linguagem declarativa = BML (XHTML like; 819 V1.3.1 2005] like); linguagem não-declarativa = ECMAScript) não implementado) Ginga Brasileiro/SBTV Ginga-NCL [ABNT NBR 15606-2 2007] Ginga-J D (linguagem declarativa = NCL; linguagem não- (linguagem não-declarativa = declarativa = Lua) Java U! W.0'O.! gBJ! #O+18-.! %1! .$0#'&8'1! 5%1! $#55O'{.-'1! 5%1! 1#18'$.1! e.7%&D1! '! 0-.1#O'#-%! 7.-.!-'<'78%-'1!7%-8;8'#1B! Tabela 3.4. Ambientes de aplicações para receptores portáteis Middleware Sistema de TVD Ambiente Declarativo Ambiente Procedural ARIB-BML Japonês/ISDB-T ARIB ! BML [ARIB B-24 2004] X (linguagem declarativa = BML (XHTML like; linguagem não-declarativa = ECMAScript) Ginga Brasileiro/SBTVD Ginga-NCL [ABNT NBR 15606-5 2007] Opcional o Ginga-J (linguagem declarativa = NCL; linguagem não-declarativa = Lua) ! W'-$#&.&5%! '18.! 1'VE%2! <.0'! '&:.8#).-$%1! ,+'! 8.&8%! %! .$0#'&8'! 5'<O.-.8#I%! ,+.&8%!%!7-%<'5+-.O!5'!+$!$#55O'{.-'!5'I'!5.-!1+7%-8'!.!8%5%1!%1!-',+#1#8%1!5#1<+8#5%1! &.! "'VE%! gBgBKB! ?.0'! 8.$0b$! 1.O#'&8.-! ,+'! 8%5%1! %1! $#55O'{.-'1! ,+'! .7-'1'&8.$! %1! 5%#1! .$0#'&8'1! 7'-$#8'$! ,+'! <.5.! +$! 5'O'1! +1'! .1! :.<#O#5.5'1! 5%! %+8-%! 7%-! $'#%! 5'! +$.!7%&8'!5':#&#5.!.8-.Ib1!5'!U=91!0#O.8'-.#1!7.5-E%B! *C*C*C) N.--'1X"215)@18'"2"%.3(5) ^!5'1'&I%OI#$'&8%!5'!.7O#<.Vc'1!&E%@5'<O.-.8#I.1!:%P'!.%!'1<%7%!5'18'!<.7]8+O%B!S'18.! 1'VE%! 5#1<+8#-'$%1! %! '18.5%! 5.! .-8'! 5%1! $#55O'{.-'1! 5'<O.-.8#I%1! .7-'1'&8.5%1! &.1! W.0'O.1!gBg!'!gBJB! ! ?%$%!$%18-.!.!W.0'O.!gBg2!.!$.#%-#.!5%1!.$0#'&8'1!5'<O.-.8#I%1!b!0.1'.5%!'$! |oWC3! }! Z?CU"<-#78B! |oWC3! kzg?! AZ?@TY8$OK@GMMGMmMK! GMMGl! b! +$.! O#&P+.P'$! #&#<#.O$'&8'! 7-%e'8.5.! 7.-.! &.I'P.VE%! '$! #&:%-$.Vc'1! 8'T8+.#1! 7'O.! #&8'-.VE%! 5%! +1+;-#%B! |oWC3! 7-#I#O'P#.! .! #&8'-.8#I#5.5'! '$! 5'8-#$'&8%! 5.! 1#&<-%&#).VE%! '! 5.! .5.78.0#O#5.5'! 5'! <%&8'f5%! ,+'2! 7%-! &E%! :.)'-'$! 7.-8'! 5%! :%<%! 5.! O#&P+.P'$2!1X!7%5'$!1'-!5':#&#5.1!7%-!7-%<'5#$'&8%1!#$7'-.8#I%1!+1.&5%!.!O#&P+.P'$! Z?CU"<-#78! kZ?CU! GjG! KLLLlB! ?%$%! I#$%12! #11%! 8%-&.! %! 5'1'&I%OI#$'&8%! 5.1! .7O#<.Vc'1!$+#8%!$.#1!5#:]<#O!7.-.!+1+;-#%1!O'#P%1B! ! |oWC3!1X!7'-$#8'!.!5':#&#VE%!5'!-'O.<#%&.$'&8%1!5'!#&8'-.8#I#5.5'!'&I%OI'&5%! 7.-8'!5'!+$!<%&8'f5%![d&<%-.!5'!+$!%0e'8%!5'!$]5#.!1'!'11'!%0e'8%!:%-!8'T8+.O2!%+!1'!.! d&<%-.! :%-! 7+-.$'&8'! '17.<#.OB! S%! <.1%! 5'! +$! 8'T8%2! %! -'O.<#%&.$'&8%! 5'I'! 1'-! '$0+8#5%!&%!<%&8'f5%2!%+!1'e.2!|oWC3!b!+$.!O#&P+.P'$!5%!8#7%!$'5#.@0.1'52!<%$%!
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