DLNA's full name is DIGITAL LIVING NETWORK ALLIANCE, whose purpose is to Enjoy your music, photos and videos, anywhere anytime, DLNA (Digital Living Network Alliance) by Sony, Intel, Microsoft and initiated the establishment of an attempt to resolve personal PC, consumer electronics, mobile equipment, including wireless and wired network interoperability, making the digital media and content services to unlimited sharing and growth is possible, the current has reached more than 280 member companies. Introduction DLNA does not create technology, but to form a solution to the problem, one we can comply with the norms. Therefore, the choice of a variety of techniques and protocols are now very broad application of technologies and protocols. DLNA provides its entire application into five functional components. From bottom to top are: network interconnection, network protocols, media transport, control and management device discovery, media formats. DLNA function components Media Formats Device Discovery
Control and Media Management Media Transport Network Stack Network Connectivity The formation of important technical features and protocols Connectivity Ethernet, 802.11, and Bluetooth Networking IPv4 Suite
Device Discovery and Control UPnP Device Architecture 1.0 Media Management and Control UPnP AV 1.0 and UPnP Printer: 1 Media Format Required and Optional Format Profiles Media Transport HTTP (Mandatory) and RTP (Optional) 1 network interconnection. It provides the access network types and protocols. At present, include:
Wired network: 802.3.i / u Wireless Network: 802.11/a/b/g (2) network protocol. Provides for the use of its network protocols. Currently, its provisions must support IPv4. However, taking into account the shortcomings of IPv4 address space, in the near future to support IPv6. Of course, given the many already existing IPv4 applications and devices. In the future for a long period of time to support both IPv4 and IPv6, and ensure the interconnection of IPv4 and IPv6 dual stack will be favored. 3 media delivery. Its provisions all DLNA devices must support the use of the HTTP protocol for media transmission. This will make for a long period of time the HTTP protocol on how to improve the safety of large high-speed data transmission as an issue. Alone, safe and natural, TLS may be a good choice. In addition, IPv6, IPSEC protocol has become a necessary option. This has to a certain extent, solve the security issues. But it seems to use the software to do encryption and decryption of the work is not always the right choice. Because, in real applications, very few customers does not find fault with your speed. Of course, but you can also use other special RTP media streaming protocol. However, the premise is you have to support a transfer under the HTTP protocol. 4 device discovery, control and media management. This is the most important functional components of a level. Intel UPnP may be due to the initiator it is, therefore, in the time of its re-launch DLNA, UPnP is not everything, of course its a waste ah. Is it because a long stay in the UPnP protocol stage, very few applications, IDG is an exception, Intel launched the DLNA do it again, I do not know it:) Currently, the use of the UPnP Device Architecture 1.0 and UPnP AV 1.0 and UPnP Printer: 1. This is just a bunch of standard UPnP Forum on the tip of the iceberg of. Its UPnP things, like or find many, there is not more talk about it. In short, the steps and through a series of agreements to achieve the device discovery and management, but also through the AV vendor-defined standards and Printer to the media management. A lot of concepts and terminology, introduces the next time:) 5 media formats. This is the last of a component. The provision of digital media and content sharing and use of the time of media formats. It must support is: JPEG, LPCM, MPEG2. Other optional media formats in Table 2. DLNA media format Classification must be supported media format can support the format
Image JPEG PNG, GIF, TIFF Audio LPCM AAC, AC-3, ATRAC 3plus, MP3, WMA9 AV MPEG2 MPEG-1, MPEG-4 *, AVC, WMV9 Above, the DLNA technology to do a brief explanation, just in terms of technology, DLNA away we should say very close. However, there is also a lot of commercial factors. So, DLNA is still some distance away from us.
Control and Media Management Media Transport Network Stack Network Connectivity The formation of important technical features and protocols Connectivity Ethernet, 802.11, and Bluetooth Networking IPv4 Suite
Device Discovery and Control UPnP Device Architecture 1.0 Media Management and Control UPnP AV 1.0 and UPnP Printer: 1 Media Format Required and Optional Format Profiles Media Transport HTTP (Mandatory) and RTP (Optional) 1 network interconnection. It provides the access network types and protocols. At present, include:
Wired network: 802.3.i / u Wireless Network: 802.11/a/b/g (2) network protocol. Provides for the use of its network protocols. Currently, its provisions must support IPv4. However, taking into account the shortcomings of IPv4 address space, in the near future to support IPv6. Of course, given the many already existing IPv4 applications and devices. In the future for a long period of time to support both IPv4 and IPv6, and ensure the interconnection of IPv4 and IPv6 dual stack will be favored. 3 media delivery. Its provisions all DLNA devices must support the use of the HTTP protocol for media transmission. This will make for a long period of time the HTTP protocol on how to improve the safety of large high-speed data transmission as an issue. Alone, safe and natural, TLS may be a good choice. In addition, IPv6, IPSEC protocol has become a necessary option. This has to a certain extent, solve the security issues. But it seems to use the software to do encryption and decryption of the work is not always the right choice. Because, in real applications, very few customers does not find fault with your speed. Of course, but you can also use other special RTP media streaming protocol. However, the premise is you have to support a transfer under the HTTP protocol. 4 device discovery, control and media management. This is the most important functional components of a level. Intel UPnP may be due to the initiator it is, therefore, in the time of its re-launch DLNA, UPnP is not everything, of course its a waste ah. Is it because a long stay in the UPnP protocol stage, very few applications, IDG is an exception, Intel launched the DLNA do it again, I do not know it:) Currently, the use of the UPnP Device Architecture 1.0 and UPnP AV 1.0 and UPnP Printer: 1. This is just a bunch of standard UPnP Forum on the tip of the iceberg of. Its UPnP things, like or find many, there is not more talk about it. In short, the steps and through a series of agreements to achieve the device discovery and management, but also through the AV vendor-defined standards and Printer to the media management. A lot of concepts and terminology, introduces the next time:) 5 media formats. This is the last of a component. The provision of digital media and content sharing and use of the time of media formats. It must support is: JPEG, LPCM, MPEG2. Other optional media formats in Table 2. DLNA media format Classification must be supported media format can support the format
Image JPEG PNG, GIF, TIFF Audio LPCM AAC, AC-3, ATRAC 3plus, MP3, WMA9 AV MPEG2 MPEG-1, MPEG-4 *, AVC, WMV9 Above, the DLNA technology to do a brief explanation, just in terms of technology, DLNA away we should say very close. However, there is also a lot of commercial factors. So, DLNA is still some distance away from us.
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