M64 节目传输系统接口 标准查询与下载

ITU-T J.281-2005 基于IP的光纤网络上的多信道视频信号传输的要求 研究组9

Recent mass deployments of broadband optical access networks allow general consumers to use 100 Mbit/s or more bandwidth at affordable costs. This bandwidth has potential of transmitting high-quality video signals up to HDTV. Internet Protocol is general

Requirements for multi-channel video signal transmission over IP-based fibre network Study Group 9

ITU-R BT.1720-2005 在宽带互联网协议网络上传送的数字视频广播业务的服务等级和测量方法的质量(关于 ITU-R 100/6)

This Recommendation specifies performance requirements and objective measuring methods of quality of service (QoS) for the delivery of digital video broadcasting services over broadband Internet protocol (IP) networks.

Quality of service ranking and measurement methods for digital video broadcasting services delivered over broadband Internet protocol networks (Question ITU-R 100/6)

ITU-R F.763-5-2005 高频电路上使用相移键控或正交幅度调制的数据传输

This Recommendation provides data transmission systems using phase-shift keying (PSK) and quadrature amplitude modulation (QAM) over HF channels. Information is contained in Annex 6 for data rates from 3 200 to 12 800 bit/s.

Data Transmission over HF Circuits Using Phase Shift Keying or Quadrature Amplitude Modulation

ITU-R BS.1734-2005 应用于剧院环境的大屏幕数字成像的声音部件的基本性能要求

This Recommendation specifies the requirements relevant to the presentation of the sound components of the large-screen digital imagery (LSDI) applications intended for presentation in a theatrical environment. The specifications are mostly based on tho

Basic performance requirements for the sound components of large-screen digital imagery applications for presentation in a theatrical environment

ITU-R BS.1726-2005 国际节目交换中的伴随数字音频电视的信号水平

This Recommendation gives guidance on the level of digital audio signals accompanying television in international programme exchange. The Recommendation specifies that one of two specified reference levels (–18 dBFS or –20 dBFS) be employed and declared,

Signal level of digital audio accompanying television in international programme exchange

ITU-T J.175-2005 音频服务器协议 研究组9

This Recommendation describes the architecture and protocols that are required for playing announcements in Voice-over-IP (VoIP) IPCablecom networks. Announcements are typically needed for calls that do not complete. Additionally, they may be used to pro

Audio server protocol Study Group 9

ANSI/ATIS 0100502-2005 系统M-NTSC制式电视信号.网络接口规格和性能参数

System M-NTSC Television Signals - Network Interface Specifications and Performance Parameters

ANSI/ATIS 0150200-2005 系统M-NTSC电视信号.网络接口规范和性能参数

This standard covers interface and performance specifications of television transmission service channels. Hypothetical reference channels have been defined and utilized to apportion performance parameters. Television signals created or transmitted in accordance with other standards or make-ups may not necessarily be compatible with the specifications of the standard.

System M-NTSC Television Signals - Network Interface Specifications and Performance Parameters

ITU-T J.280 SPANISH-2005 数字节目插入:拼接应用程序接口.9号研究组

This Application Program Interface (API) creates a standardized method for communication between Servers and Splicers for the insertion of content into any MPEG-2 Output Multiplex in the Splicer. This API is flexible enough to support one or more Servers attached to one or more Splicers. Digital Program Insertion includes content such as spot advertisements of various lengths, program substitution, public service announcements or program material created by splicing portions of the program from a Server.

Digital Program Insertion: Splicing application program interface Study Group 9

ITU-T J.112 ANNEX B SPANISH-2004 交互式有线电视业务的传输系统.附录B:电缆数据业务接口规范:射频接口规范.9号研究组

Annex B defines the radio-frequency interface specifications for high-speed data-over-cable systems. There are two options for physical layer technology, which have equal priority and are not required to be interoperable. One technology option is based on the downstream multi-programme television distribution that is deployed using 6 MHz channelling, and supports upstream transmission in the 5-42 MHz region. The second technology option is based on a multi-programme television distribution using 8 MHz channel spacing and supports upstream in the 5-65 MHz region. Both options have equal status. The first of these options is defined in clauses B.4, B.6 and B.7, whereas the second is defined by replacing the content of those clauses with the content of Annex B.N. Annex B.O "Privacy for cable modem implementations" to the former Annex B/J.112 is removed because it became the stand-alone ITU-T Rec.J.125.

Transmission systems for interactive cable television services Annex B: Data-over-cable service interface specifications: Radio-frequency interface specification

ITU-T J.112 ANNEX B FRENCH-2004 交互式有线电视业务的传输系统.附录B:电缆数据业务接口规范:射频接口规范.9号研究组

Annex B defines the radio-frequency interface specifications for high-speed data-over-cable systems. There are two options for physical layer technology, which have equal priority and are not required to be interoperable. One technology option is based on the downstream multi-programme television distribution that is deployed using 6 MHz channelling, and supports upstream transmission in the 5-42 MHz region. The second technology option is based on a multi-programme television distribution using 8 MHz channel spacing and supports upstream in the 5-65 MHz region. Both options have equal status. The first of these options is defined in clauses B.4, B.6 and B.7, whereas the second is defined by replacing the content of those clauses with the content of Annex B.N. Annex B.O "Privacy for cable modem implementations" to the former Annex B/J.112 is removed because it became the stand-alone ITU-T Rec.J.125.

Transmission systems for interactive cable television services Annex B: Data-over-cable service interface specifications: Radio-frequency interface specification

ITU-T Q.812-2004 Q3接口和X接口高层协议的轮廓-系列Q:交换和信令-Q3接口 第4研究组

This Recommendation provides the upper layer (5-7) protocol profiles for the Q and X interfaces as defined in the M.3000 series of ITU-T Recommendations.

Upper layer protocol profiles for the Q and X interfaces SERIES Q: SWITCHING AND SIGNALLING Q3 interface Study Group 4

ITU-T Q.811-2004 Q3接口和X接口低层协议的轮廓-系列Q:交换和信令-Q3接口 第4研究组

This Recommendation is a part of a series of Recommendations dealing with the transfer of information for the management of telecommunications systems.

Lower layer protocol profiles for the Q and X interfaces SERIES Q: SWITCHING AND SIGNALLING Q3 interface Study Group 4

ITU-R BT.1683-2004 在有全部参照的情况下标准定义数字广播电视的客观感性视频质量测量技术

This Recommendation specifies methods for estimating the perceived video quality of a one-way video transmission system. This Recommendation applies to baseband signals.

Objective perceptual video quality measurement techniques for standard definition digital broadcast television in the presence of a full reference

ITU-R BT.1676 SPANISH-2004 规定视频质量度量的精确度和交叉定标的方法框架.问题ITU-R 44/6

VQMs are intended to provide calculated values that are strongly correlated with viewer subjective assessments. This Recommendation provides: Methods for curve fitting VQM objective values to subjective data in order to facilitate the accuracy calculation and to produce a normalized objective value scale that can be used for cross correlation between different VQMs. An algorithm (based on statistical analysis relative to subjective data) to quantify the accuracy of a given VQM. A simplified root mean square error calculation to quantify the accuracy of a VQM when the subjective data has roughly equal variance across the VQM scale. A method to plot classification errors to determine the relative frequencies of "false tie", "false differentiation", "false ranking", and "correct decision" for a given VQM.

Methodological framework for specifying accuracy and cross-calibration of video quality metrics

ITU-R BT.1683 SPANISH-2004 在具备一个完整参考条件下,数字广播电视的客观感知视频质量测量技术的标准定义

This Recommendation specifies methods for estimating the perceived video quality of a one-way video transmission system. This Recommendation applies to baseband signals. The estimation methods in this Recommendation are applicable to: codec evaluation, specification, and acceptance testing; potentially real-time, in-service quality monitoring at the source; remote destination quality monitoring when a copy of the source is available; quality measurement of a storage or transmission system that utilizes video compression and decompression techniques, either a single pass or a concatenation of such techniques.

Objective perceptual video quality measurement techniques for standard definition digital broadcast television in the presence of a full reference

ITU-R BT.1683 FRENCH-2004 在具备一个完整参考条件下,数字广播电视的客观感知视频质量测量技术的标准定义

This Recommendation specifies methods for estimating the perceived video quality of a one-way video transmission system. This Recommendation applies to baseband signals. The estimation methods in this Recommendation are applicable to: codec evaluation, specification, and acceptance testing; potentially real-time, in-service quality monitoring at the source; remote destination quality monitoring when a copy of the source is available; quality measurement of a storage or transmission system that utilizes video compression and decompression techniques, either a single pass or a concatenation of such techniques.

Objective perceptual video quality measurement techniques for standard definition digital broadcast television in the presence of a full reference

ITU-R BS.1688-2004 大屏幕数字成像应用的投递接口的基带音响系统和音频源编码

that Recommendation ITU-R BT.1662 – General reference chain and management of postprocessing headroom for programme essence in large screen digital imagery applications, specifies a general reference chain for typical large screen digital imagery (LSDI)

Baseband sound system and audio source-coding at delivery interfaces of large-screen digital imagery applications

ITU-R BS.1679-2004 应用于剧院环境的大屏幕数字成像的音频质量的主观评价

This Annex provides a summary of the provisions that should be implemented when performing subjective assessment tests of audio quality or audio impairment for LSDI applications designed for program presentation in a theatrical environment.

Subjective assessment of the quality of audio in large screen digital imagery applications intended for presentation in a theatrical environment

ITU-R BT.1676 FRENCH-2004 规定视频质量度量的精确度和交叉定标的方法框架.问题ITU-R 44/6

VQMs are intended to provide calculated values that are strongly correlated with viewer subjective assessments. This Recommendation provides: Methods for curve fitting VQM objective values to subjective data in order to facilitate the accuracy calculation and to produce a normalized objective value scale that can be used for cross correlation between different VQMs. An algorithm (based on statistical analysis relative to subjective data) to quantify the accuracy of a given VQM. A simplified root mean square error calculation to quantify the accuracy of a VQM when the subjective data has roughly equal variance across the VQM scale. A method to plot classification errors to determine the relative frequencies of "false tie", "false differentiation", "false ranking", and "correct decision" for a given VQM.

Methodological framework for specifying accuracy and cross-calibration of video quality metrics