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Tải xuống
áng kiến quốc tế hỗ trợ sự phát triển của tiêu chuẩn và hướng dẫn cho phép truyền tải tín hiệu truyền hình kỹ thuật số thông qua mạng cáp hữu tuyến và không dây, hệ thống vệ tinh, và các cấu hình lò vi sóng. DVB cũng mô tả các thủ tục để truy cập dịch vụ băng thông rộng tương tác và cung cấp các chương trình phát sóng phù hợp MPEG-2. | international initiative that supports the development of standards and guidelines enabling transmission of digital television signals via wireline and wireless cable networks satellite systems and microwave configurations. DVB also describes procedures for accessing interactive broadband services and delivery of MPEG-2 compliant broadcasts. DVB standards also clarify the role of Cable Modem Distribution Systems CMTSs in supporting distribution of television programming and multimedia signals. Cable companies in the European Union South America Australia and Asia endorse DVB specifications. 7.11.8.1 DVB-C Digital Video Broadcasting-Cable Only DVB-C DVB-Cable Only clarifies procedures for transporting audio video and data services over wireline cable networks and wireless cable networks based on the Local Multipoint Distribution System LMDS and the Multichannel Multipoint Distribution System MMDS . Moreover DVB-C specifications define channel coding packet formats and cable network operations and support EuroBox and EuroModem interoperability. 7.11.8.2 DVB-S Digital Video Broadcasting-Satellite and DVB-T Digital Video Broadcasting-Terrestrial In addition to DVB-C the DVB initiative defines common interfaces and international specifications for satellite DVB-S and terrestrial DVB-T services. DVB-S describes channel coding frame format and modulation functions for tele-applications provided by satellites that operate in the 11 GHz and 12 GHz spectral bands. DVB-T indicates approaches for enabling digital terrestrial broadcasts. 7.11.8.3 DVB-CI Digital Video Broadcasting-Common Interface Based on specifications that include DVB-T DVB-Terrestrial and DVB-S DVB-Satellite DVB-CI DVB-Common Interface describes interfaces for CATV Cable Television and SMATV Satellite Master Antenna Television headend equipment and approaches for enabling SMATV installations in apartment complexes and local neighborhoods. 7.11.8.4 DVB-D Digital Video Broadcasting-Data DVB-D DVB-Data .
