1、 Recommendation ITU-R BT.1722-2(03/2011)Harmonization of the instruction set for the execution engine for interactive TV applicationsBT SeriesBroadcasting service(television)ii Rec. ITU-R BT.1722-2 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and
2、 economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are perform
3、ed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to
4、be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be foun
5、d. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radi
6、odetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management S
7、NG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2011 ITU 2011 All rights reserved. No part of thi
8、s publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BT.1722-2 1 RECOMMENDATION ITU-R BT.1722-2 Harmonization of the instruction set for the execution engine for interactive TV applications (Question ITU-R 131/6) (2005-2007-2011) Scope This Recommen
9、dation is intended to harmonize the application environment for interactive TV applications. The potential for commonality in the executable application environment is based on the analysis of the common core identified in the work leading to this Recommendation. Such commonality would benefit conte
10、nt providers through knowledge of commonly adopted executable functionality and economies of scale. The ITU Radiocommunication Assembly, considering a) the need to avoid proliferation of protocols for interactive multimedia services; b) that digital broadcasting services (satellite, terrestrial and
11、cable) are becoming widely available and offer multimedia applications; c) that multimedia applications comprising video, audio, still-picture, text, graphics, etc. associated with interactive features have been developed; d) that multimedia applications planned or deployed in some Regions are using
12、 the executable application environment; e) that common instruction sets are desirable for production and international exchange of multimedia content; f) that continuous work and review of Application Programming Interfaces (APIs) is being carried out in the ITU-R and ITU-T Sectors; g) that Recomme
13、ndation ITU-T J.200 defines the high-level architecture for a harmonized set of interactive instruction sets and APIs and identifies the structure of application environment comprising the executable application environment and the declarative application environment for digital television services;
14、 h) that Recommendation ITU-T J.202 defines the executable application environment within Recommendation ITU-T J.200 and is the corresponding Recommendation to Recommendation ITU-R BT.1722, recommends 1 that the harmonized instruction set for the execution engines specified in Annex 1 should be used
15、 for interactive TV applications in the executable application environment. 2 Rec. ITU-R BT.1722-2 Annex 1 Harmonization of the instruction set for the execution engine for interactive TV applications 1 Introduction This annex specifies the common core APIs consisting of those described in Table 1.
16、Tables 2 and 3 describe additional broadcast extension APIs to Table 1 to conform to either ETSI TS 102 543 V1.1.1 for the purpose of harmonization among specifications derived from ETSI TS 102 543 V1.1.1, or JavaDTV specification which is the core of GINGA-J and functionally equivalent to ETSI TS 1
17、02 543. 2 References 2.1 Normative references The following texts contain provisions which, through reference in this text, constitute provisions of the present Recommendation. Recommendation ITU-T J.200 (2010), Worldwide common core Application environment for digital interactive television service
18、s. ETSI TS 102 728 V1.1.1 (2010-01), Digital Video Broadcasting (DVB) Globally Executable MHP (GEM) Specification 1.2.2, http:/webapp.etsi.org/workprogram/Report_WorkItem.asp?WKI_ID=31422. ABNT NBR 15606-6, Digital terrestrial television Data coding and transmission specification for digital broadca
19、sting Part 6: JavaDTV 1.3. 2.2 Informative references ETSI TS 101 812 V1.3.1, Digital Video Broadcasting Multimedia Home Platform (MHP) version 1.0.3. http:/webapp.etsi.org/workprogram/Report_WorkItem.asp?WKI_ID=25178. ETSI TS 102 727 V1.1.1, Digital Video Broadcasting Multimedia Home Platform (MHP)
20、 version 1.2.2. http:/webapp.etsi.org/workprogram/Report_WorkItem.asp?WKI_ID=31420. ETSI TS 102 812 v1.2.2, Digital Video Broadcasting (DVB); Multimedia Home Platform (MHP) Specification 1.1.1. http:/webapp.etsi.org/workprogram/Report_WorkItem.asp?WKI_ID=25177. SCTE 90-1 2004, OCAP 1.0 Profile. http
21、:/www.scte.org/documents/pdf/ANSISCTE9012004.pdf. OC-SP-OCAP1.1.2-090930, OCAP 1.1 Profile. http:/ ARIB STD-B24 V5.4 (2009), Data Coding and Transmission Specification for Digital Broadcasting (in Japanese). http:/www.arib.or.jp/english/html/overview/archives/br.html. Rec. ITU-R BT.1722-2 3 ARIB STD
22、-B23 V1.2 (2009), Application Execution Engine Platform for Digital Broadcasting (in Japanese). http:/www.arib.or.jp/english/html/overview/archives/br.html. ATSC A/101 (2 August 2005), Advanced Common Application Platform (ACAP). http:/www.atsc.org/standards/a_101.pdf. ISO/IEC 13522-5:1997, Informat
23、ion technology Coding of multimedia and hypermedia information Part 5: Support for base-level interactive applications. http:/www.iso.org/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=26876 Multimedia Home Platform (MHP) Specification 1.1.1. http:/webapp.etsi.org/workprogram/Report_WorkItem.as
24、p?WKI_ID=18801. ABNT NBR 15606-4, Digital terrestrial television Data coding and transmission specification for digital broadcasting Part 4: Ginga-J Environment for execution of procedural applications. NOTE 1 At the time of publication, the editions of normative references indicated were valid. All
25、 Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed above. 3 Common platform definitions for interactive TV using exe
26、cutable applications The recommended platform definitions for interactive TV consist of the common core in Table 1 which is derived from the commonality in ARIB STD-B23, MHP 1.2, ACAP, OCAP 1.0 and GINGA-J. TABLE 1 Common core APIs java.awt java.awt.event java.awt.image java.beans java.io java.lang
27、*java.lang.reflect *java.math java.rmi java.security java.security.cert java.security.spec 4 Rec. ITU-R BT.1722-2 TABLE 1 (end) java.util java.util.zip javax.media javax.media.protocol .ssl javax.security.cert javax.tv.graphics javax.tv.locator javax.tv.media javax.tv.service javax.tv.service.gui
28、de javax.tv.service.navigation javax.tv.service.selection javax.tv.service.transport javax.tv.util *java.awt.color *java.awt.font *java.awt.im *java.rmi.registry *java.security.acl *java.security.interfaces *java.text *java.util.jar *javax.microedition.io *javax.microedition.pki *javax.microedition.
29、xlet *javax.microedition.xlet.ixc *javax.microedition.x500 NOTE 1 Packages with symbol * require careful consideration of compatibility with systems based on older versions of this Recommendation. See normative references. 4 Broadcast extension APIs Broadcast extension APIs are additional APIs to th
30、e common core APIs defined in Table 1, which should be normatively used. APIs which are intended to provide harmonization among standards derived from ETSI TS 102 728 V1.1.1 are described in clause 4.1. APIs for those functionalities derived from ABNT NBR 15606-6 are described in clause 4.2. Rec. IT
31、U-R BT.1722-2 5 4.1 Additional APIs to conform to Globally Executable MHP In this section, additional APIs to the common core in Table 1 are defined, which are intended to provide harmonization among standards derived from ETSI TS 102 728 V1.1.1. The standards are MHP 1.0.3, MHP 1.1, MHP 1.2.2, OCAP
32、 1.0, OCAP 1.1, ACAP, and ARIB STD-B23 1.2. These additional APIs should be used in conjunction with common core APIs. NOTE 1 ETSI TS 102 728 V1.1.1 covers broadcast, packaged media and IPTV targets. In this Recommendation, only broadcast target should be considered. TABLE 2 Additional APIs to confo
33、rm to ETSI TS 102 728 V1.1.1 org.davic.media org.davic.resources org.davic.mpeg org.davic.mpeg.sections .tuning org.dvb.application org.dvb.dsmcc org.dvb.event org.dvb.io.ixc org.dvb.io.persistent org.dvb.lang org.dvb.media .tuning .rc org.dvb.test org.dvb.ui org.dvb.user org.havi.ui org.havi.ui.e
34、vent 4.2 Additional APIs to conform to JavaDTV specification In this section, additional APIs to the common core defined in Table 1 are defined, which are intended to conform to ABNT NBR 15606-6 and are functionally equivalent to ETSI TS 102 728 V1.1.1. 6 Rec. ITU-R BT.1722-2 TABLE 3 Additional APIs
35、 to conform to JavaDTV specification com.sun.dtv.application com.sun.dtv.broadcast com.sun.dtv.broadcast.event com.sun.dtv.filtering com.sun.dtv.io com.sun.dtv.locator com.sun.dtv.lwuit com.sun.dtv.lwuit.animations com.sun.dtv.lwuit.events com.sun.dtv.lwuit.geom com.sun.dtv.lwuit.layouts com.sun.dtv
36、.lwuit.list com.sun.dtv.lwuit.painter com.sun.dtv.lwuit.plaf com.sun.dtv.lwuit.util com.sun.dtv.media com.sun.dtv.media.audio com.sun.dtv.media.control com.sun.dtv.media.dripfeed com.sun.dtv.media.format com.sun.dtv.media.language com.sun.dtv.media.text com.sun.dtv.media.timeline com.sun.dtv.platfo
37、rm com.sun.dtv.resources com.sun.dtv.security com.sun.dtv.service com.sun.dtv.smartcard com.sun.dtv.test com.sun.dtv.transport com.sun.dtv.tuner com.sun.dtv.ui com.sun.dtv.ui.event 5 System specific APIs In the appendices, the system-specific APIs are given to supplement the common core where approp
38、riate and for possible future use. Rec. ITU-R BT.1722-2 7 Appendix I (Informative) Specific additional APIs common to MHP 1.0.3, MHP 1.1.1 and MHP 1.2 org.davic.mpeg.dvb .ca .ca org.dvb.si Appendix II (Informative) Specific additional APIs common to OCAP 1.0 and OCAP 1.1 org.ocap org.ocap.applicatio
39、n org.ocap.event org.ocap.hardware org.ocap.hardware.pod org.ocap.media org.ocap.mpeg org.ocap.resource org.ocap.service org.ocap.si org.ocap.system org.ocap.ui.event org.ocap.storage org.ocap.system.event org.ocap.test org.ocap.ui 8 Rec. ITU-R BT.1722-2 Appendix III (Informative) OCAP 1.1 specific
40、 additional APIs org.ocap.diagnositics org.ocap.environment Appendix IV (Informative) ARIB STD-B23 specific additional APIs jp.or.arib.tv.media jp.or.arib.tv.si jp.or.arib.tv.ui .ca jp.or.arib.tv.peripheral jp.or.arib.tv.peripheral.devices jp.or.arib.tv.peripheral.protocol jp.or.arib.tv.peripheral.
41、stream jp.or.arib.tv.io jp.or.arib.tv.service.selection org.ocap.shared.dvr org.ocap.shared.dvr.navigation org.ocap.shared.media Rec. ITU-R BT.1722-2 9 Appendix V (Informative) MHP 1.2 specific additional APIs org.dvb.application.inner org.dvb.application.privileged org.dvb.application.plugins org.d
42、vb.application.storage org.dvb.auth.callback org.dvb.dom.bootstrap org.dvb.dom.css org.dvb.dom.dvbhtml org.dvb.dom.environment org.dvb.dom.event org.dvb.dom.inner org.dvb.internet org.dvb.smartcard org.dvb.spi org.dvb.tvanytime org.dvb.xml org.w3c.dom org.w3c.dom.events org.w3c.dom.views 10 Rec. ITU
43、-R BT.1722-2 Appendix VI (Informative) ACAP specific additional APIs org.atsc.dom org.atsc.dom.environment org.atsc.dom.events org.atsc.dom.events org.atsc.dom.html org.atsc.dom.views org.atsc.si org.ocap.media org.ocap.si org.ocap.ui.event org.ocap.application org.ocap.event org.ocap.service org.o
44、cap.system org.ocap.hardware.pod org.w3c.dom org.w3c.dom.css org.w3c.dom.events org.w3c.dom.html2 org.w3c.dom.views Rec. ITU-R BT.1722-2 11 Appendix VII (Informative) Ginga-J specific additional APIs br.org.sbtvd.bridge .si .tuning br.org.sbtvd.ui .ssl .ssl javax.security.cert javax.crypto javax.c
45、rypto.interface javax.crypto.spec javax.microedition.apdu Appendix VIII (Informative) Migration from MHEG-5 to MHP The process of migration may be assisted by modification and/or addition to a harmonized specification. By way of example, additional functionalities to migrate from MHEG-5 to DVB-MHP a
46、re given below: 1. Extend the graphics APIs to support drawing lines thicker than 1 pixel for all primitives. This could be implemented by extending the underlying PersonalJava specification or by making DVB-specific extensions. 2. Add 14:9 font support to the DVBTextLayoutManager. If this is not fe
47、asible, then it may be possible to use a defensive solution of 16:9 for all display types. This would distort the font (by compressing it horizontally) but would ensure the expected text flow. However, the logical widths calculated when using this aspect ratio would be different, resulting in the li
48、ne breaks being inserted at different points in the body of text. More importantly, anything other than very basic formatted text (relying on tabulation) would have a slim chance of being rendered correctly. 3. Add VK_CANCEL to the set of minimum supported key events. 12 Rec. ITU-R BT.1722-2 4. Synchronize the character repertoire to MHEG repertoire specified in ETSI ES 202 184. 5. Provide CI AppMMI extensions; the ability for an interoperable plug-in to register itself as a handler for specific application
