M60 广播、电视网综合 标准查询与下载

ITU-T N.62 SPANISH-1993 在电视传输前的调测周期内进行的测试.国际播音节目及电视传输电路的维护.4号研究组;9pp

This Recommendation provides test objectives for use by International Television Centres prior to a television transmission, for both circuit sections and links, using either satellite or terrestrial facilities or both.

Tests to Be Made During the Line-up Period That Precedes a Television Transmission

ITU-T G.111 FRENCH-1993 国际连接的响度评定值(LRs)(12号研究组)21pp

Clauses 1 to 5 of this Recommendation apply in general to all-analogue, mixed analogueídigital and all-digital international telephone connections. However, where Recommendations are made on specific aspects in clause 6 for mixed analoguddigital or all-digital connections, clause 6 will govern.

Loudness Ratings (LRs) in an International Connection (Study Group XII) 21 pp

ARINC 735-2 ITEM 5.0-1993 天线

Antennas

Antennas

ITU-R 27-1993 HF场强度测量活动

that the Second Session of the World Administrative Radio Conference for the Planning of HF Bands Allocated to the Broadcasting Service (Geneva 1987) (WARC HFBC-87), in its Recommendation No. 514 (HFBC-87) invites the Radiocommunication Bureau to underta

HF Field-Strength Measurement Campaign

ITU-R QUESTION 53/6-1993 在地面或卫星广播(包括高清和加清电视系统)中单个电视频道多个声音信号的传输标准

The ITU Radiocommunication Assembly considering a) that there is a requirement to transmit more than one sound signal including stereophony with a television picture; b) that within a television channel as used in present systems several sound channels could be accommodated; c) that the use of some of these additional possibilities could necessitate changes to the present television standards; d) that changes affecting existing transmissions can only be introduced if compatibility with existing receivers, at least during a sufficiently long transition period, is retained; e) that a prerequisite of a new system is that the sound signals should serve at least the same coverage area as the vision signal; f) that a new system could also provide for the transmission of sound programmes, independent from the picture, or in place of a television picture; g) that the technical quality of the sound transmission can be improved; h) that the improvements in picture quality associated with high-definition and enhanced definition television may warrant examination of the sound system needed to keep in step with the higher level of realism available in the picture.

Standards for the transmission of several sound signals in one television channel in terrestrial or satellite broadcasting including high-definition and enhanced definition television systems

NF C90-003:1992 数据系统规范 (rds)

Specification of the data system (rds).

ITU-R BO.792-1992 12G频段广播卫星业务(电视)的干扰保护比

that the interference protection ratio is a primary parameter for the broadcasting-satellite service CBSS

Interference Protection Ratios for the Broadcasting-Satellite Service (Television) in the 12 GHz Band

ITU-R BO.791-1992 广播卫星业务中极化的选择

For purposes of planning the BSS in the bnnd 11.7-12.5 GHz in Region 1 and 11.7-12.2 GHz in Region 3,right- and left-hand circular pol'arization was adopted. Similarly, in Region 2, right- 'anci left-hand circular polarization was selected for the Plan fo

Choice of Polarization for the Broadcasting-Satellite Service

ITU-R BO.786-1992 高清晰度电视(HDTV)广播卫星业务(BSS)的MUSE系统

The MUSE system has been developed for HDTV satellite broadcasting in the planned 12 GHz band. Picturequality and system feasibility have been confirmed through various tests including daily operation using the BSS.

MUSE System for HDTV Broadcasting-Satellite Services

ITU-R BO.652-1-1992 12GHz波段广播卫星业务及14、17GHz波段有关馈线链路的地球站和卫星天线的基准辐射图形.第10/11C部分-术语

that for earth-station receiving antennas, to ensure that interference up to the limit of the service area shoul not exceed that envisaged in Plans for the 12 G E band

Reference Patterns for Earth-Station and Satellite Antennas for the Broadcasting-Satellite Service in the 12 GHz Band and for the Associated Feeder Links in the 14 GHz and 17 GHz Bands - Section 10/11C - Technology

ITU-R BO.790-1992 广播卫星业务中接收机品质因数(G/T)的计算以及接收设备的特点

that typical receiving equipment for individual reception is comprised of an antenna, a lownoise receiver front end, an indoor unit containing intermediate frequency stages, programme selector, demodulation or adaptor stages and a television monitor or t

Characteristics of Receiving Equipment and Calculation of Receiver Figure-of-Merit (G/T) for the Broadcasting-Satellite Service

ITU-R BO.787-1992 高清晰度电视(HDTV)广播卫星业务(BSS)的基于MAC/分组的系统

HD-MAC is designed to meet the highest quality criteria and to ailow the introduction of HDTV senices on existing MAC/packet services, or directly as new services.

MAC/Packet Based System for HDTV Broadcasting-Satellite Services

ITU-R BO.793-1992 广播卫星业务(BSS)馈线链路和BSS下行链路之间噪音的分隔

The CCIR, considering that the broadcasting-satellite service (BSS) is normally expected to provide service to a relatibely large that in minimizing the effects of feeder-link noise on the overail link noise budget the cost and complexity of that the satellite output e.i.r.p. is maintained at the nominal output level during feeder-link fades by that higher up-link power requirements would affect only a few feeder-link stations; that in terms of availability, rain fades on the down link would only have a local affect on the performance that a further degradation of the overall link due to thermal noise occurs due to the non-linearity of the a) geographical area encompassing a large population of receivers; b> the BSS receiver will be minimized; c) employing techniques such as automatic gain control (AGC); d)that higher up-link power requirements would affect only a few feeder-link stations; e) whereas rain fade on the feeder link would affect performance over the whole service area; 0 satellite high power amplifier coupled with W M conversion

Partitioning of Noise between Feeder Links for the Broadcasting-Satellite Service (BSS) and BSS Down Links

ITU-R BT.807 SPANISH-1992 数据广播的参考模型

The CCIR considering a) that data broadcasting services are growing rapidly in number and diversity of application; b) that the media used to convey data broadcasting services now covers the whole gamut of broadcast emission bearers from LF radio through to SHF satellite systems; c) that the reducing cost of computing equipment makes the development of complex receiving terminals economically viable; d) that there will be an increasing need to interconnect broadcast transmission and reception equipment to computer networks and other data broadcasting equipments; e) that a method needs to be found to ease standardization and facilitate smooth evolution of data broadcasting systems in the future; f) that it is desirable to encourage the development of compatible interface specifications to rationalize the design of equipment.

Reference model for data broadcasting

ETSI ETS 300 174-1992 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

ITU-T O.3-1992 气候条件和相关的测试测量设备-规格的测量仪器(第4研究组)共7页

The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations o

Climatic Conditions and Relevant Tests for Measuring Equipment - Specifications of Measuring Equipment (Study Group IV) 7 pp

ITU-R BO.712-1-1992 12G频段广播卫星业务的高质量声音/数据标准－第10/11B部分－系统

According to the current Radio Regulations, satellite channels in the 12 GHz band are assigned to each administration over which television programmes but also, alternatively

HIGH-QUALITY SOUND/DATA STANDARDS FOR THE BROADCASTING-SATELLITE SERVICE IN THE 12 GHz BAND

ITU-R 772-1992 (撤回)HD-MAC部分和MAC/数据包部分信号的传输电路的测试和测量技术

that the technical and operational requirements of the ISS in the frequency range 50.2-71 GHz are identified in Annex 2 of this Recommendation

(WITHDRAWN) Test Signals and Measurement Techniques for Transmission Circuits Carrying MAC/Packet Signals or HD-MAC Signals

ITU-R BT.813 SPANISH-1992 与电视信号数字编码带来损害有关的客观图像质量评定的方法

The Recommendation considering that with the increasing application of digital coding and bit-rate reduced transmission, the assessment of coding impairments is of critical importance; that objective measurements are necessary for specific evaluations as routine supervisions or system that several types of objective measurements may be defined for different digital systems and applications; optimizations; that the adoption of standardized methods is of importance in the exchange of information between various laboratories.

METHODS FOR OBJECTIVE PICTURE QUALITY ASSESSMENT IN RELATION TO IMPAIRMENTS FROM DIGITAL CODING OF TELEVISION SIGNALS

ITU-R BT.813 FRENCH-1992 与电视信号数字编码带来损害有关的客观图像质量评定的方法

The CCIR considering: a) that with the increasing application of digital coding and bit-rate reduced transmission, the assessment of coding impairments is of critical importance; b) that objective measurements are necessary for specific evaluations as routine supervisions or system optimizations; c) that several types of objective measurements may be defined for different digital systems and applications; d) that the adoption of standardized methods is of importance in the exchange of information between various laboratories.

Methods for objective picture quality assessment in relation to impairments from digital coding of television signals