2006 is a year of IPTV red fire, and it is also the "breaking year" of IPTV in China. 4 IPTV licenses, 10 local licenses, telecommunications, Netcoms have begun to deploy provincial-level IPTV commercial networks, Harbin IPTV users have reached 100,000, and Shanghai has 60,000 users at the end of 2006.
In the world, IPTV has already blown a comprehensive commercial horn. European mainstream telecom operators basically launched IPTV commercial services, France Telecom, Telefonica, and Italy Telecom have launched IPTV services, British Telecom and German Telecom have planned to launch Microsoft-based IPTV software platform services in 2007.
After years of cultivation, the market has gradually matured. IPTV is the best application platform for the transformation of fixed-line and radio, electrician operators. China will be the largest market for IPTV industries.
Important factors for IPTV development
IPTV should develop rapidly and face several key issues. After years of practice and exploration, some problems have already surfaced, and some have to continue to explore.
Video standard
The choice of video coding standards for IPTV is global. When a large-scale deployment business, once a standard is selected, it means that from the head end to streaming server and multicast copy point until the user's top box must meet the selected standard. IPTV's video standard has developed from MPEG2 to MPEG4. By 2006, H.264 gradually became the mainstream standard for current IPTV commercial. In addition to the advanced technology of H.264, China Telecom Operations Support H.264 Another important reason is that H.264 avoids MPEG4's patent charge for operators, so even if the current H.264 cost is higher than MPEG4 costs In the case, H.264 is still the choice of more and more domestic telecom operators. Due to various reasons such as history, cost, business model, a variety of coding formats have a long-term coexistence in the IPTV application field.
Broadband user growth rate and user-friendly network bandwidth
It is predicted that China's broadband users will reach 54.5 million before 2007, exceeding Japan (35.9 million) ranked first in Asia (35.9 million), China will become the world's largest country, IPTV's total user before 2010 The number reached 13 million, 12% of broadband users, and the rapid growth of broadband users provides a good platform for IPTV development. At present, many domestic cities in China are only 512K. In the past two years, they have been renovated by operators. Some cities have upgraded to 2M, providing bandwidth guarantees for IPTV development.
Operation mode
IPTV has a Harbin mode, Shanghai mode, Hangzhou mode, etc. in the domestic years of exploration, and the differences in these operational models are that they are leading telecommunications and Netcom. Some are Netcom and radio and television, and there is also a rural flowering mode. The model is still in the exploration phase, IPTV single mode and dual mode (DVB + IPTV) form will coexist within a period of time.
IPTV content and value-added services
It is predicted that by 2010, the total number of IPTVs will reach 13 million, which enjoy high-end customers with HD programs, about 200 ~ 3 million, and most of the audience still enjoy the standard clearance show; the operator's transformation of the operator is a long-term The process, for the consideration of cost and customer demand, will still focus on standard clearance programs in the last few years.
According to the user survey of IPTV pilot, the on-demand and time shift is currently the most popular service, which indicates that IPTV attracts users with value-added services that differ from DVB live broadcasts. Users need personalized interaction applications, this is also IPTV Unique charm.
Competitive dual-mode IPTV application solution
In order to adapt to the current market conditions and IPTV development trends, Haisi semiconductor launches highly competitive H.264 hardware decoded dual-mode SOC chip DHI3560.
The HI3560 is a high integration of the ARM9 + hardware engine architecture, programmable network media processor, H.264, MPEG2, MPEG4, DIVX3.11 / 4/5/6 video real-time decoding with hardware implementation. The H.264 video stream can reach the image effect of the VCD at 384kbps bandwidth, which can achieve the effect of approaching the DVD, and advanced video compression techniques provide a larger capacity video program in limited bandwidth to become possible, and A variety of video decoding protocols can adapt to a more abundant video source, which is ideal for IPTV services that are currently carried out under current China's network conditions.
In terms of network, Hi3560 integrates TS streams and Ethernet 10m / 100m ports, providing bandwidth detection and adaptive, PPPoE dial, RTP / RTCP, IGMP, etc., for IPTV various network applications; To quickly unpack the TS stream, and built into the AES, DES, 3DES and other data encryption engine and smart card interface. The Hi3560 chip has a cost-effective, which can be applied to single-mode IPTV set-top box scheme, which also applies to IPTV + DVB-C / DVB-S / DVB-T Dual Molding Top Box Scheme, which is shown in Figure 1, only one box is used. You can receive a live broadcast program of the radio and television, or you can view the VOD on-demand program and time shift program. Each VOD video stream is encapsulated to the IP packet using a low code rate encoding format such as H.264 or MPEG4, and is loaded with a single broadcast statement. The IP Metropolitan Network passes the video service to the broadband access network via the IP unicast / multicast function, and the user can enjoy it through the Hi3560 chip. The broadband access network consists of BAS, LANSWITCH, implements user broadband access authentication management, video group add / leave control functions, and sends the video stream required by the user to the user. For multicast, Lanswitch implements the IGMP snooping feature, BAS implements user access authentication and IGMP proxy multicast proxy. In addition, viewing the VOD program also requires a streaming server, an EPG server, and other systems, which will not be described in detail here. Watch the traditional DVB-C and DVB-S program, as long as you connect to the Cable or have a satellite receiver.
Figure 1 IP / DVB-X dual mode STB application based on 3560
In terms of graphics processing, the Hi3560 integrates the 2D graphics hardware acceleration engine, supports image enhancement techniques such as anti-flashing, anti-aliasing, anti-shake, providing simple and easy-to-use API interfaces, users can develop a colorful graphics interface and games in the application layer. Applicable to the growing value-added business needs of IPTV.
The HI3560 features a free open source Linux operating system, providing audio and video decoding libraries, underlying drivers, media processing modules, media processing APIs, etc. According to customer requirements, Haisi can also provide a low-cost, customized reference plan. For application development engineers, it is more practical. Does not consider complex DSP development models, do not need to consider urinary video technology development, debugging, as long as they are The Hi3560 application platform provided by Haisi, the system is integrated, overcoming the shortcomings of the current DSP capacity and the ASIC chip system are not flexible enough, is a product with independent intellectual property, this product is good for users quickly Launched the product and shorten redundant links on the industrial chain. The system architecture of the HI3560 is shown in Figure 2.
Figure 2 Hi3560 system architecture diagram
The IPTV market has just happened that the Hi3560 dual-mode IPTV program will play an important role in flourishing IPTV industry.
Editor in charge: GT, read full text
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