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· IPTV with Lime for ITU

ITU-T H.721是针对IPTV、VOD等通过网络放送的、面向世界各国的IPTV标准。该标准对还未制定IPTV标准的发展中国家具有很好的指导性、实用性和操作性。腾龙电子根据该标准，自主完成IPTV终端的研发以及和服务端的对接，实现了商用化。在开发的过程中，和服务端开发上配合共同通过了ITU的TU-T H.721的合格认证。

IPTV with Lime 功能介绍



	Network communication Interface
	● Communication processing - RTP, UDP, HTTP/TLS, TCP, IP, IGMP/MLD
	● Network attachment processing - DHCP, DNS
	Network communication Interface
	● Communication processing - RTP, UDP, HTTP/TLS, TCP, IP, IGMP/MLD
	● Network attachment processing - DHCP, DNS
	Content Delivery Client Functions
	● Multicast content delivery client function block -IGMPv2,MLDv2
	● Unicast content delivery client functional block - RTP and RTSP - HTTP for VoD contents selection
	● Error recovery client functional block - FEC based error recovery
	Media Client Functions
	● Playback and trick mode functionalities for VoD - Playback, Fast-Forward, Rewind, Pause, Stop, Chapter, etc.
	● Demux/mux functional block - MPEG2 TS/TTS, clock synchronization
	● Codec functional block (Decoding) - Video：MPEG2（ITU-T H.262), MPEG4/AVC(ITU-T H.264) -Audio：MPEG-2AAC, MPEG-1 L2, MPEG-4 HE-AAC, AC-3
	● Storage functional block - Storing ID of services, password, License key
	● Metadata management - Caching, Searching, Parental control
	SCP Client Functions（SCP=Service and Content Protection）
	● Service protection client functions - Secure communication channel - Authentication with SCP server - CRL update and management
	● Content protection client functions - Content key acquisition - Extraction of the descrambling key from ECM
	IPTV Application Client Functions
	● IPTV Application Client Functions - Handling HTML/BML, - metadata to replay control - EPG/ECG
	● SADS client functions - Service provider discovery - Service discovery - Service selection(compliant with H.770)
	Content Delivery Client Functions
	● Multicast content delivery client function block -IGMPv2,MLDv2
	● Unicast content delivery client functional block - RTP and RTSP - HTTP for VoD contents selection
	● Error recovery client functional block - FEC based error recovery
	Media Client Functions
	● Playback and trick mode functionalities for VoD - Playback, Fast-Forward, Rewind, Pause, Stop, Chapter, etc.
	● Demux/mux functional block - MPEG2 TS/TTS, clock synchronization
	● Codec functional block (Decoding) - Video：MPEG2（ITU-T H.262), MPEG4/AVC(ITU-T H.264) -Audio：MPEG-2AAC, MPEG-1 L2, MPEG-4 HE-AAC, AC-3
	● Storage functional block - Storing ID of services, password, License key
	● Metadata management - Caching, Searching, Parental control
	SCP Client Functions（SCP=Service and Content Protection）
	● Service protection client functions - Secure communication channel - Authentication with SCP server - CRL update and management

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