M60 广播、电视网综合 标准查询与下载

ETSI ETS 300 174 A1-1997 网络方面(NA).在34-45 Mbit/s的范围内用于提高质量的分量电视信号的数字编码(修改件1)

Network Aspects (NA); Digital Coding of Component Television Signals for Contribution Quality Applications in the Range 34-45 Mbit/s (Amendment A1)

IEC 60728-4:1997 电视和声音信号用电缆分布系统.第4部分:惰性同轴宽频分布设备

Cabled distribution systems for television and sound signals - Part 4: Passive coaxial wideband distribution equipment

ETSI ETS 300 706-1997 增强型可视数据规范

Enhanced Teletext Specification

ETSI ETS 300 707-1997 电子节目指南(EPG).使用电子数据传输的TV指南协议

Electronic Programme Guide (EPG); Protocol for a TV Guide Using Electronic Data Transmission

ETSI ETS 300 174 PRA1-1997 网络方面(NA).在34-45 Mbit/s的范围内用于提高质量的分量电视信号的数字编码

Network Aspects (NA); Digital Coding of Component Television Signals for Contribution Quality Applications in the Range 34 - 45 Mbit/s

GY/T 5059-1997 广播电影电视工程设计图形符号和文字符号

Graphic symbols and verbal symbols in design for broadcast, film, and television projects

ITU-R BO.1294-1997 (撤回)由在11/12GHz频段内运行的卫星发射的数字多节目电视信号接收的一般功能要求

Satellite digital TV systems have shown their advantages with respect to the analogue TV allowing a more efficient use of the satellite frequency spectrum available and establishing a more robust scenario with respect to interference protection.

(WITHDRAWN) Common Functional Requirments for the Reception of Digital Multiprogramme Television Emissions by Satelites Operating in the 11/12 GHz Frequency Range

ITU-R RAPPORT M.2013 FRENCH-1997 风力测绘雷达

Wind profiler radars are radio systems which can be very helpful in weather forecasting applications. To be able to make use of the benefits of wind profiler radars, suitable radio frequency bands need to be identified for the accommodation ofthis type of

Wind Profiler Radars

ITU-R QUESTION 95/6-1997 电视广播应用程序中计算机技术的使用

The ITU Radiocommunication Assembly considering a) that the rapid increase of introduction of computer technologies in TV broadcasting applications; b) that digital techniques are in wide use and that video signals in digital form facilitate their processing by general purpose computer hardware; c) that general purpose computers are a potentially low-cost tool for processing video data; d) that different parameters are used in computer and television displays (e.g. pixels/line, field rate, aspect ratio, colorimetry and blanking); e) that there exist Recommendations for the digital representation of SDTV and HDTV signals (e.g. Recommendations ITU-R BT.601, ITU-R BT.656, ITU-R BT.709 and ITU-R BT.1120); f) that the ITU-R is studying the harmonization of standards of TV systems for broadcast and non-broadcast use; g) that studies on digital broadcasting systems including interactive applications are being conducted in the ITU-R; h) that the harmonization of displays for both television and computers is being considered in some areas; j) that the use of improved TV displays is being considered at various levels of the computer industry; k) that the future television receiver will be designed to have intelligent features.

Use of computer technology in television broadcasting applications

ITU-R BO.SERIES-1997 1997 BO系列广播卫星服务(语音和电视)

the importance of facilitating the exchange of television programmes via satellites

1997 BO Series Broadcasting-Satellite Service (Sound and Television)

ITU-R RAPPORT BO.2016 FRENCH-1997 BSS系统的40.5-42.5 GHz频段

BSS systems for the 40.5-42.5 GHz band

ITU-R BT.1208-1-1997 数据地面电视广播的视频编码

that digital terrestrial television broadcasting (DTTB) will be introduced in the VHF/UHF bands

Video Coding for Digital Terrestrial Television Broadcasting

ITU-R BT.1209-1-1997 数字地面电视广播的业务复用方法

that digital terrestrial television broadcasting (DTTB) will be introduced in the VHF/UHF bands by some administrations

Service Multiplex Methods for Digital Terrestrial Television Broadcasting

ITU-R SM.853-1 SPANISH-1997 必要频带宽度

The TTU Radiocommunication Assembly considering: a) that the concept of “necessary bandwidth” defined in No.146 (S1.152) of the Radio Regulations, is useful for specifying the spectral properties of a given emission, or class of emission, in the simplest possible manner;b) that with regard to the efficient use of the radio-frequency (RF) spectrum, necessary bandwidths for individual classes of emission must be known, that in some cases the formulae listed in Recommendation ITU-R SM. 1138 can only be used as a guide and that the necessary bandwidth for certain classes of emissions is to be evaluated corresponding to a specified transmission standard and required quality; c) that changes in technology have resulted in additions and variations in the modulations used for radiocommunication; d) that the numerical parameters used in the necessary bandwidth formulae may change with time due to changes in signal characteristics (e.g. average talker level).

NECESSARY BANDWIDTH

ITU-R S.483-3 SPANISH-1997 调频卫星固定业务地球同步卫星网络电视信道中,由此业务的其他网络引起的干扰最大允许值

The ITU Radiocommunication Assembly considering: a) that TV/FM carriers are sensitive to interference from other fwed-satellite service (FSS) carriers; b) that in particular, W/FM carriers are sensitive to interference from other W/FM carriers; c) that interference between networks in the FSS contributes to the noise in the system; d) that it is desirable that the interference noise in television channels of networks in the FSS caused by transmitters of different networks of this service should be such as to give a reasonable orbit utilization efficiency; e) that the overall performance of a network should essentially be under the control of the system designer; f) that it is necessary to protect a network in the FSS from interference by other networks of this service; g) that it is necessary to specifi the maximum permissible interference power in a television channel, in order to determine space station and earth station characteristics such as required protection ratios and minimum orbital spacing; h) that protection ratio masks are useful to determine minimum orbital spacing and in coordination exercises; j) that for direct to home (DTH) reception quality grade 4, as defined in Recommendation ITU-R BT.500, is usually adequate.

Maximum permissible level of interference in a television channel of a geostationary-satellite network in the fixed-satellite service employing frequency modulation, caused by other networks of this service

ITU-R S.483-3 FRENCH-1997 调频卫星固定业务地球同步卫星网络电视信道中,由此业务的其他网络引起的干扰最大允许值

The Recommendation considering that TV/FM carriers are sensitive to interference from other fwed-satellite service (FSS) carriers; that in particular, W/FM carriers are sensitive to interference from other W/FM carriers; that interference between networks in the FSS contributes to the noise in the system.

Maximum permissible level of interference in a television channel of a geostationary-satellite network in the fixed-satellite service employing frequency modulation, caused by other networks of this service

ITU-R REPORT M.2013-1997 风力测绘雷达

Wind profiler radars are radio systems which can be very helpful in weather forecasting applications. To be able to make use of the benefits of wind profiler radars, suitable radio frequency bands need to be identified for the accommodation ofthis type of

Wind Profiler Radars 16 pp

ITU-R SM.853-1 FRENCH-1997 必要频带宽度

The TTU Radiocommunication Assembly considering: a) that the concept of “necessary bandwidth” defined in No.146 (S1.152) of the Radio Regulations, is useful for specifying the spectral properties of a given emission, or class of emission, in the simplest possible manner;b) that with regard to the efficient use of the radio-frequency (RF) spectrum, necessary bandwidths for individual classes of emission must be known, that in some cases the formulae listed in Recommendation ITU-R SM. 1138 can only be used as a guide and that the necessary bandwidth for certain classes of emissions is to be evaluated corresponding to a specified transmission standard and required quality; c) that changes in technology have resulted in additions and variations in the modulations used for radiocommunication; d) that the numerical parameters used in the necessary bandwidth formulae may change with time due to changes in signal characteristics (e.g. average talker level).

NECESSARY BANDWIDTH

ETSI TR 101 288-1997 电视系统.电子节目指南(EPG)实施规程(版本1.2.1)

Television Systems; Code of Practice for an Electronic Programme Guide (EPG) V1.2.1

ITU-T G.117 FRENCH-1996 对地不平衡的传输问题.12号研究组

This Recommendation gives a comprehensive set of prescriptive measurements of various balance parameters for one- port and two-port networks. These are intended for use either in the field or in the factory with relatively simple test apparatus (e.g. standard transmission oscillators, level measuring sets), and a special test bridge. Measuring arrangements for assessing the degree of unbalance are covered in Recommendation 0.9[1], which are consistent with this Recommendation.

TRANSMISSION ASPECTS OF UNBALANCE ABOUT EARTH Study Group 12