CEA-775.2-A-2008.pdf
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1、 CEA Standard Service Selection Information for Digital Storage Media Interoperability CEA-775.2-A June 2008 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:50:02 MDTNo reproduction or networking permitted
2、without license from IHS -,-,- NOTICE Consumer Electronics Association (CEA) Standards, Bulletins and other technical publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of
3、products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards, Bulletins and other technical publications shall not in any respect preclude any member or nonmember of CEA from manufacturing or selling produ
4、cts not conforming to such Standards, Bulletins or other technical publications, nor shall the existence of such Standards, Bulletins and other technical publications preclude their voluntary use by those other than CEA members, whether the standard is to be used either domestically or international
5、ly. Standards, Bulletins and other technical publications are adopted by CEA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, CEA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the St
6、andard, Bulletin or other technical publication. This CEA Standard is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the CEA Standard and the IEC document can be
7、 made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitati
8、ons before its use. (Formulated under the cognizance of the CEAs R4.8 DTV Interface Subcommittee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2008 Technology Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email ANSI/CEA Standards: United States of America American National Standards Inst
9、itute, Customer Service, 11 West 42nd Street, New York NY 10036; Phone 212-642 4900; Fax 212-302-1286; Internet http:/www.ansi.org; Email: salesansi.org. ATSC Standards: Advanced Television Systems Committee (ATSC), 1750 K Street N.W., Suite 1200, Washington, DC 20006; Phone 202-828-3130; Fax 202-82
10、8-3131; Internet http:/www.atsc.org. IEC Standards: Global Engineering Documents, World Headquarters, 15 Inverness Way East, Englewood, CO. USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email . Copyright Consumer Electronics Association Provided by IHS under license with CEA
11、 Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:50:02 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-775.2-A IEEE Standards: IEEE Operations Center, 445 Hoes Lane, Piscataway, N.J., 08854-4141 USA, Phone: +1 732 981 0060; Internet http:/www.ieee.org ITU St
12、andards ITU Sales and Marketing Service, International Telecommunication Union, Place des Nations CH- 1211, Geneva 20, Switzerland; Phone +41 22 730 6141; Fax +41 22 730 5194; Internet: http:/www.itu.org; Email: salesitu.int. 2.3 Informative References The following standards contain provisions that
13、, through reference in this text, constitute informative provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying for t
14、he most recent editions of the standards listed in Sec. 2.3. 7. ETSI EN 300 468, V1.5.1, Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems, (2003-05) 8. ETSI TR 101 211 V1.6.1, Digital Video Broadcasting (DVB); Guidelines on implementation and usage of Servi
15、ce Information (SI), 2004-05. 9. ANSI/SCTE 28 2007, HOST-POD Interface Standard 10. IEEE 1394B-2002 IEEE Standard for a Higher Performance Serial Bus-Amendment 2 2.4 Informative Reference Acquisition ETSI Standards: European Telecommunications Standards Institute (ETSI), 650 route des Lucioles - 069
16、21 Sophia Antipolis Cedex - France; Internet: http:/etsi.org. ANSI/SCTE Standards Society of Cable Telecommunications Engineers (SCTE), 140 Philips Rd., Exton, PA 19341; Phone 800-543-5040; Fax 610-363-5898; Internet: http:/www.scte.org; Email: infoscte.org. IEEE Standards: IEEE Operations Center, 4
17、45 Hoes Lane, Piscataway, N.J., 08854-4141 USA, Phone: +1 732 981 0060; Internet: http:/www.ieee.org. 2.5 Definitions For the purposes of this document, the following definitions apply. descriptor: A data structure of the format: descriptor_tag, descriptor_length, and a variable amount of data. The
18、tag and length fields are each 8 bits. The length specifies the length of data that begins immediately following the descriptor_length field itself. A descriptor whose descriptor_tag identifies a type not recognized by a particular decoder shall be ignored by that decoder. Descriptors can be include
19、d in certain specified places within the tables specified in this standard, subject to certain restrictions (see Section 6). Descriptors may be used to extend data represented as fixed fields within the tables. They make the protocol very flexible since they can be included only as needed. New descr
20、iptor types can be standardized and included without affecting receivers that have not been designed to recognize and process the new types. 3 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 02:50:02 MDTNo rep
21、roduction or networking permitted without license from IHS -,-,- CEA-775.2-A event: A collection of elementary streams with a common time base, an associated start time, and an associated end time. An event is equivalent to the common industry usage of “television program.” Partial Transport Stream:
22、 An MPEG-2 Transport Stream in which transport packets carrying certain elementary streams and PSI tables have been deleted from the original complete Transport Stream. A partial Transport Stream may be created for storage applications to reduce the file size and bandwidth needed for storage, or to
23、reduce the isochronous bandwidth needed to deliver the TS across a serial interface such as IEEE 1394. The timing (start of the packet) of the remaining TS packets on the time- axis is not modified. program element: A generic term for one of the elementary streams or other data streams that may be i
24、ncluded in a program. For example: audio, video, data, etc. program: A collection of program elements. Program elements may be elementary streams. Program elements need not have any defined time base; those that do have a common time base are intended for synchronized presentation. The term program
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- CEA 775.2 2008
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