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電影數(shù)字拷貝衛(wèi)星接收機(jī)檢測項目報價？??解決方案？??檢測周期？??樣品要求？ |
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本標(biāo)準(zhǔn)規(guī)定了廣播電視的主要術(shù)語和定義。本標(biāo)準(zhǔn)適用于廣播電視系統(tǒng)。
本標(biāo)準(zhǔn)規(guī)定了數(shù)字存儲媒體和數(shù)字視頻通信用的圖像信息的編碼表示，并且規(guī)定了解碼過程。這種表示支持恒定碼率傳輸、可變碼率傳輸、隨機(jī)存取、信道跳換、可分級解碼、比特流編輯、以及諸如快速正放、快速倒放、慢放、暫停的靜像等特殊功能。本標(biāo)準(zhǔn)與GB/T 17191.2前向兼容，并與EDTV、HDTV、SDTV 格式上兼容或下兼容。 本標(biāo)準(zhǔn)主要應(yīng)用于數(shù)字存貯媒體、視頻廣播與通信。存貯媒體可以與解碼器直接聯(lián)接，或是通過諸如總線、LAN或電信鏈路等通信設(shè)施與解碼器聯(lián)接。
本標(biāo)準(zhǔn)規(guī)定了數(shù)字電視廣播業(yè)務(wù)信息（SI)數(shù)據(jù)，這些數(shù)據(jù)是數(shù)字電視廣播碼流的組成部分，幫助用戶從碼流中選擇業(yè)務(wù)和/或事件的信息，使綜合接收解碼器（IRD)能自動設(shè)置可供選擇的業(yè)務(wù)。業(yè)務(wù)信息自動設(shè)置部分的數(shù)據(jù)主要由GB/T 17975.1-2000中的節(jié)目特定信息（PSI)給出。本標(biāo)準(zhǔn)規(guī)定了補(bǔ)充PSI的附加數(shù)據(jù)，以幫助IRD自動調(diào)諧，并規(guī)定了顯示給用戶的附加信息。顯示這些信息的方式?jīng)]有在本標(biāo)準(zhǔn)中規(guī)定，IRD制造商可以自由選擇顯示方式。電子節(jié)目指南（EPG)將成為數(shù)字電視傳輸?shù)囊环N應(yīng)用。本標(biāo)準(zhǔn)所規(guī)定的業(yè)務(wù)信息中包含的數(shù)據(jù)可以作為電子節(jié)目指南的基礎(chǔ)。本標(biāo)準(zhǔn)適用于地面、有線、衛(wèi)星等數(shù)字電視廣播業(yè)務(wù)。
本標(biāo)準(zhǔn)規(guī)定了數(shù)字電視廣播系統(tǒng)中基于傳送流的數(shù)據(jù)廣播的數(shù)據(jù)結(jié)構(gòu)、數(shù)據(jù)交換、數(shù)據(jù)傳輸協(xié)議等。本標(biāo)準(zhǔn)適用于地面數(shù)字電視、有限數(shù)字電視和衛(wèi)星數(shù)字電視廣播系統(tǒng)中的數(shù)據(jù)廣播系統(tǒng)。
本部分規(guī)定了HFC網(wǎng)絡(luò)數(shù)據(jù)雙向傳輸系統(tǒng)的物理層、數(shù)據(jù)鏈路層及網(wǎng)絡(luò)層通信協(xié)議。本部分適用于HFC網(wǎng)絡(luò)數(shù)據(jù)雙向傳輸系統(tǒng)。
GY/T 220的本部分規(guī)定了移動多媒體廣播條件接收系統(tǒng)的系統(tǒng)構(gòu)成、總體要求、技術(shù)體系、邏輯架構(gòu)和功能、分系統(tǒng)間接口、電子錢包模塊、移動多媒體廣播系統(tǒng)復(fù)用傳輸?shù)倪m配等。本部分適用于通過衛(wèi)星和/或地面無線發(fā)射的視頻、音頻、數(shù)據(jù)信息等移動多媒體廣播系統(tǒng)。
本標(biāo)準(zhǔn)規(guī)定了應(yīng)用于數(shù)字電視廣播的基本 EPG 信息的內(nèi)容格式和傳輸方式 , 以及應(yīng)用于交換的擴(kuò)展 EPG 信息的內(nèi)容格式。對于應(yīng)用于數(shù)字電視廣播的擴(kuò)展 EPG 內(nèi)容格式和傳輸方式 , 由于與中間件和其他一些正在研究中的數(shù)字電視標(biāo)準(zhǔn)密切相關(guān) , 本標(biāo)準(zhǔn)中目前未作規(guī)定。本標(biāo)準(zhǔn)沒有規(guī)定 EPG 的生成和顯示方式 , 運營商和數(shù)字電視接收終端制造商可以自由選擇生成和顯示方式。本標(biāo)準(zhǔn)適用于數(shù)字電視廣播前端向接收終端傳遞基本 EPG 信息和數(shù)字電視廣播前端之間交換 EPG 信息。
本標(biāo)準(zhǔn)規(guī)定了廣播電視數(shù)字微波傳輸電路的運行、維護(hù)及管理等工作要求。本標(biāo)準(zhǔn)適用于廣播電視傳輸用數(shù)字微波干線電路、支線電路的運行維護(hù)和管理。
This Recommendation defines service transport methods and service multiplex methods for the terrestrial digital television broadcasting systems. It specifies the utilization of and constraints on the use of ISO/IEC Standard 13818-1 (MPEG-2 Systems).
This Report comprises a report on the current “state of the art” of digital content protection for broadcast television and related services.
ITU-T Recs H.610 and H.611 define the architecture and operations, administration monitoring and provisioning (OAMP) requirements for the delivery of video, data and voice services across a VDSL access network to an in-home environment, known as a Full-Service VDSL (FS-VDSL)network.This Supplement provides the operator requirements for services and infrastructure deployment upon which these Recommendations were based. The intent was to maximize commonality of the operators' requirements to help vendors to implement common products, which can then be offered in all international markets thereby achieving economies of scale.The Recommendations aim to enable the provisioning of a bundle of triple-play services in a reliable way, with minimal user intervention, respecting the key requirements of security and conditional access to the content and at a cost compatible with mass market deployment. Only the elements that need to be specified to achieve an interoperable low-cost platform are included in these specifications. It is intended that each service provider can define and evolve a distinct portfolio of competitive services using the 'bricks' defined in the Recommendations with downloadable software configuration.VDSL is referenced throughout the Supplement as the physical layer technology; however, the architectural specifications contained herein could be equally applicable to CPE and Access Networks employing other broadband physical layer technologies.
ITU-T Recs H.610 and H.611 define the architecture and operations, administration monitoring and provisioning (OAMP) requirements for the delivery of video, data and voice services across a VDSL access network to an in-home environment, known as a Full-Service VDSL (FS-VDSL)network.This Supplement provides the operator requirements for services and infrastructure deployment upon which these Recommendations were based. The intent was to maximize commonality of the operators' requirements to help vendors to implement common products, which can then be offered in all international markets thereby achieving economies of scale.The Recommendations aim to enable the provisioning of a bundle of triple-play services in a reliable way, with minimal user intervention, respecting the key requirements of security and conditional access to the content and at a cost compatible with mass market deployment. Only the elements that need to be specified to achieve an interoperable low-cost platform are included in these specifications. It is intended that each service provider can define and evolve a distinct portfolio of competitive services using the 'bricks' defined in the Recommendations with downloadable software configuration.VDSL is referenced throughout the Supplement as the physical layer technology; however, the architectural specifications contained herein could be equally applicable to CPE and Access Networks employing other broadband physical layer technologies.
This Recommendation | International Standard defines a set of lossless (bit-preserving) and lossy compression methods for coding continuous-tone, bi-level, grey-scale, colour digital still images, or multi-component images. This Recommendation | Internati
ISO/IEC 15444-2:2004 defines a set of lossless (bit-preserving) and lossy compression methods for coding continuous-tone, bi-level, grey-scale, colour digital still images, or multi-component images.
