CEA-CEB5-C-2007.pdf
《CEA-CEB5-C-2007.pdf》由会员分享,可在线阅读,更多相关《CEA-CEB5-C-2007.pdf(11页珍藏版)》请在三一文库上搜索。
1、 CEA Bulletin Recommended Practice for DTV Receiver “Monitor” Mode Capability CEA-CEB5-B May 2007 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 01:41:43 MDTNo reproduction or networkin
2、g permitted 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 imp
3、rovement of 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 s
4、elling products 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 bulletin is to be used either domestically or i
5、nternationally. 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 ado
6、pting the Standard, Bulletin or other technical publication. This CEA Bulletin 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 Bulletin and the IEC doc
7、ument can be made. This Bulletin 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 Bulletin to establish appropriate safety and health practices and to determine the applicability of regulat
8、ory limitations before its use. (Formulated under the cognizance of the CEA R4.8 DTV Interface Subcommittee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2007 Technology Phone 202-872-9160; Fax 202-828-3131; Internet http:/www.atsc.org/. CEA Standards and Bulletins: Global Engineering Documents, W
9、orld Headquarters, 15 Inverness Way East, Englewood, CO USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email 1 For CEA-CEB5-B purposes, a DTV receiver is defined as an ATSC compliant receiving device. 1 Copyright Consumer Electronics Association Provided by IHS under license
10、 with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 01:41:43 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 Assumptions The following assumptions are made concerning the “monitor mode”: a) A unique2 ATSC transport stream payload is s
11、erviced by the DTV receiver at a time. In principle, any RF channel can be monitored, and therefore this process is referred to as “setting the DTV receiver to monitor mode N” where N is the monitored RF channel number.3 b) ATSC A/65 requires a unique transport stream payload to carry a valid Progra
12、m Association Table (PAT), Program Map Table (PMT), and PSIP information c) The DTV receiver relies on PSIP data to identify the virtual channels present in the transport stream. The channel map in PSIP may be a Terrestrial Virtual Channel Table (TVCT) or a Cable Virtual Channel Table (CVCT) and rec
13、eivers should be prepared to understand both.4 d) In monitor mode, there may be one or more virtual channels in the monitored transport stream and the DTV receiver may use software and on-screen menus to provide navigation and/or option selection for display or for other use. 5 Recommendations Based
14、 on these assumptions, the following recommendations are established to engineer DTV receivers capable of utilizing RF unidirectional interfacing. a) The channel mapping described by PSIP defines the use of virtual channels identified by their major and minor numbers. These numbers are, in general,
15、independent of the actual RF channel that carries the data payload. For this reason, digital televisions are not expected to offer direct tuning to an RF channel to viewers. In contrast, for monitor mode, direct tuning to an RF channel is necessary. Therefore, standard navigation and access devices
16、(such as remote control units, on-screen menus, or buttons on the DTV receiver) for DTV receivers should be engineered with special display controls that allow a viewer to select from one or more monitor modes. Monitor modes allow direct selection of an RF channel and a minor channel. Under normal o
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- CEA CEB5 2007
链接地址:https://www.31doc.com/p-3758913.html