M60 广播、电视网综合 标准查询与下载

ITU-R INFORME BT.2020-1 SPANISH-2000 数码环境中的客观质量评定技术

The prices quoted in the catalogue, as well as in the separate lists of ITU-R and ITU-T Recommendations and the publication notices, distributed free of charge and visible on the Web at the address

Objective quality assessment technology in a digital environment

ITU-R BT.1508 SPANISH-2000 使用全球移动通信系统(GSM)的交互通道

This Recommendation is the baseline specification for provision of an interaction channel using the global system for mobile communications (GSM), as defined by the European Digital Video Broadcast project. This terrestrial interaction channel is applicable to satellite, cable, MATV, SMATV, terrestrial, microwave or any other future broadcasting or distribution system.

Interaction Channel Using Global System for Mobile Communications (GSM)

ITU-R QUESTION 206-3/3-2000 固定和广播卫星业务的传播数据和预测方法

The ITU Radiocommunication Assembly considering a)that, in the design of fixed- and broadcasting-satellite services, an accurate knowledge of the distributions in time and space of radiowave propagation phenomena in the lower atmosphere, and of their dependence on various factors, is important to the determination of system performance and of interference to and from space stations;b)that radiowave propagation data for the fixed- and broadcasting-satellite services are restricted to certain areas and link parameters (e.g. frequency, polarization, elevation angle) and that further data are needed.

Propagation data and prediction methods for fixed- and broadcasting-satellite services

ITU-R BT.1434 FRENCH-2000 交互系统的网络独立协议

This Recommendation describes protocols independent of the underlying physical and transport protocol for the support of interaction services based on digital TV broadcast systems.

Network Independent Protocols for Interactive Systems

ITU-R BT.1434 SPANISH-2000 交互系统的网络独立协议

This Recommendation describes protocols independent of the underlying physical and transport protocol for the support of interaction services based on digital TV broadcast systems.

NETWORK INDEPENDENT PROTOCOLS FOR INTERACTIVE SYSTEMS

ITU-R INFORME M.2024 SPANISH-2000 频谱使用调查结果摘要

A number of administrations have indicated their current and planned spectrum usage of the bands which are considered potentially suitable for IMT-2000 as summarized in this Report. This was originally in response to BR Circular Letter 8/LCCE/54, 11 Febru

SUMMARY OF SPECTRUM USAGE SURVEY RESULTS

ITU-R VOL 00 P SER PT 1,2 SUP 1-2000 P系列1,2部分电波传播补充 研究组3

In order to judge the relative merits of a prediction method, an objective set of criteria needs to be defined.

Radiowave Propagation Supplement to P Series Parts 1 and 2; Study Group 3

ITU-R VOL 2000 BS-BT SER SUPP 1-2000 补充BS-BT系列广播服务.学习组6

An LF-MF antenna system may consist of a single element or an array of radiating elements. Radiation patterns of an antenna system can be represented by a three-dimensional locus of points.

Broadcasting Services Supplement to BS-BT Series; Study Group 6

ITU-R BT.1507 SPANISH-2000 使用数位加强式无线通讯系统(DECT)的交互通道

This Recommendation is the baseline specification for provision of an interaction channel using the digital enhanced cordless telecommunications (DECT) system, as defined by the European Digital Video Broadcast project. This terrestrial interaction channel is applicable to satellite, cable, MATV, SMATV, terrestrial, microwave or any other future broadcasting or distribution system.

Interaction channel using digital enhanced cordless telecommunications (DECT) system

ETSI TS 101 851-4-2000 UMTS/IMT-2000的卫星组件.A系列.第4部分:物理层程序(S-UMTS-A 25.212)(版本1.1.1)

Satellite Component of UMTS/IMT 2000; A-Family; Part 4: Physical Layer Procedures (S-UMTS-A 25.212) V1.1.1

GY/T 142-1999 米波分米波地面电视广播监测技术规程

Technical specifications for VHF and UHF terrestrial television broadcasting monitoring

ITU-T J.2 SPANISH-1999 ITU-T中J系列推荐性规范的使用指南.系列J:电视声音节目和其它多媒体信号的传输-一般推荐性规范.9号研究组

This Recommendation is intended to provide guidance on the application of ITU-T Recommendations in the J series, in order that the reader may more readily identify those Recommendations that he should consult to obtain detailed information on the technical aspects of his specific interest.

Guidelines on the Use of Some ITU-T Recommendations in the J Series - Series J: Transmission of Television Sound Programme and Other Multimedia Signals - General Recommendations Study Group 9

ITU-T G.116 FRENCH-1999 适用于端到端国际连接的传输性能目标.12号研究组.9pp

Networks are in various stages of evolution towards being all-digital. Thus, there will be instances where: connections will be routed utilizing all-digital components (end-to-end including the terminals); other connections will use all-digital network components and analogue access facilities; and still other connections will use portions of the network which are analogue while other network components may be digital. This Recommendation is intended to address each of these scenarios. Because the trend is towards digital, the masking benefits of significant channel noise for certain impairments found in analogue networks can no longer be assumed. As a result, the guidance provided in this Recommendation will reflect this new environment.

Transmission Performance Objectives Applicable to End-to-End International Connections Study Group 12; 9pp

ITU-T J.1 FRENCH-1999 适用于电视和声音节目信号及相关数据信号传输的术语,定义及缩写.J系列:电视和声音节目及其他多媒体信号的传输.一般推荐性规范.9号研究组

This Recommendation points to a recommended glossary of terms, definitions and acronyms applicable to ITU texts on the transmission of television and sound-programme signals and of related data signals for purposes of contribution, primary distribution and secondary distribution, which have been compiled from ITU-T Recommendations of the J series and a selection from Recommendation N.1. The terminology covers, among other subjects, cable television and its related services.

Terms, definitions and acronyms applicable to the transmission of television and sound-programme signals and of related data signals

ITU-T G.116 SPANISH-1999 适用于端到端国际连接的传输性能目标.12号研究组.9pp

Networks are in various stages of evolution towards being all-digital. Thus, there will be instances where: connections will be routed utilizing all-digital components (end-to-end including the terminals); other connections will use all-digital network components and analogue access facilities; and still other connections will use portions of the network which are analogue while other network components may be digital. This Recommendation is intended to address each of these scenarios. Because the trend is towards digital, the masking benefits of significant channel noise for certain impairments found in analogue networks can no longer be assumed. As a result, the guidance provided in this Recommendation will reflect this new environment.

Transmission Performance Objectives Applicable to End-to-End International Connections Study Group 12; 9pp

ITU-T J.2 FRENCH-1999 ITU-T中J系列推荐性规范的使用指南.系列J:电视声音节目和其它多媒体信号的传输.一般推荐性规范.9号研究组

This Recommendation is intended to provide guidance on the application of ITU-T Recommendations in the J series, in order that the reader may more readily identify those Recommendations that he should consult to obtain detailed information on the technical aspects of his specific interest.

Guidelines on the Use of Some ITU-T Recommendations in the J Series - Series J: Transmission of Television Sound Programme and Other Multimedia Signals - General Recommendations Study Group 9

ITU-T SERIE J SUPP 5 SPANISH-1999 系列部分 ITU-T 建议书的使用指南

This supplement gives guidance on the application of ITU-T Recommendations in the J series,in order that the reader may more readily identify those Recommendations that he should consult to obtain detailed information on the technical aspects of his specific interest.

Guidelines on the use of some ITU-T Recommendations in the J series

HJBZ 33-1998 低辐射彩色电视机

Low radianl colour television broadcasting receivers

ITU-R BO.1227-2-1999 集成服务数字广播的卫星广播系统

The progress of digital technology such as multimedia and digital television has made the general public more and more accustomed to high-quality, reliable and easy-to-use consumer digital devices. This, as a matter of course, has likewise prompted consum

Satallite-Broadcasting Systems of Integrated services Digital Broadcasting

ITU-R QUESTION 60/6-1999 频率低于30兆赫的数字广播

The ITU Radiocommunication Assembly considering a) that the reception quality of AM broadcasting in the LF, MF and HF bands (150 kHz to 26 MHz) suffers from: limited AF bandwidth, partly due to planning constraints; the disturbing effects of sky-wave propagation; man-made noise; b) that AM reception quality is relatively poor compared with FM broadcast or CD quality; c) that new digital techniques have enabled significant improvements in reception quality to be obtained in other broadcasting bands; d) that the introduction of digital modulation systems in the broadcasting bands below 30 MHz has been shown to be feasible by using low bit-rate coding; e) that Resolution 517 (Rev.WRC-97) invites the ITU-R to continue its studies on digital techniques in HF broadcasting as a matter of urgency.

Digital broadcasting at frequencies below 30 MHz