[Photo] Joint Source two AVS codec Products
Current information society, the increasing pursuit of high-quality image information of the environment, TV , Broadcasting , Streaming media makes fun of the original congestion information transmission channel becomes more congested, the main solution is to consider from two aspects, one optimization, compression rate, and without affecting the quality of occupation under the premise of reducing storage and transmission resources, and second, expand transmission channel bandwidth, increased storage capacity, carrying more and more expansion information.
As a valuable channel resources through the use of efficient coding and decoding technology to save bandwidth, the significance of particular importance. Digital audio and video codec is the digital TV, high-definition disc, streaming media and Multimedia And other common basic technology, the current mainstream of the international audio coding standards Package M including mature PE G-2. Most of our country in this field also used MPEG-2, while the use of MPEG-2, and the subsequent development of the MPEG-4 / H.264 Need to pay a large number of foreign-related patent pool royalty, will directly restrict our digital audio and video industry.
Take into account self- Intellectual property rights The importance of the combination of MPEG international standards to participate in work experience, confirmed by independent national experts to establish audio and video codec standards and technical possibilities. Then in June 2002, Ministry of Science and Technology Division approval, the establishment of digital audio and video codec technology standard AVS (AdvancedAudio Video Coding Standard in InformationTechnology, Information technology advanced audio and video coding standard) working group.
Our own intellectual property rights of Digital Audio Coding Standard in March 2006 officially became the national standard, the standard number for the GB/T20090.2-2006.
Order to promote the work of AVS standard practice onto the track, in December 2003, including from within the ICT where industry, academia, research and other aspects of the initiation of five shareholders, the commitment to AVS digital audio and video core technology, standards and critical applications of high-tech product development, high-tech enterprises in Haidian Park, Beijing registered company name as "joint source digital audio and video technology (Beijing) Co., Ltd." (below referred to as joint source).
Joint source company has introduced AVS-based standards, support multiple formats and resolutions and different target bit-rate real-time video encoding PowercoderAE100 Series Encoder Products, and supporting the decoding software, decoding chips, encoding software, broadcast software.
PowercoderAE100 Series AVS encoder is the core of standard applications, it used to achieve high rates of AVS standard Video Compression , Without reducing the accuracy can be achieved under real-time standard definition video encoding, there are already products support the CIF to the standard definition of the various image formats and target bit rate real-time video compression coding, support PA L standard, NTSC standard input, with professional-level De-Interlace; input and output interfaces rich in the same picture quality MPEG-2 only less than half of the transmission bandwidth, providing broadcast audio, compatible with mainstream Communicate Agreement.
Two encoder product pictures are as follows:
Two encoder product map The following is a satellite broadcasting and IPTV System Typical Application Diagram:
Satellite broadcasting and IPTV System Typical Application Diagram
System features: Capture audio and video data sources: from Acquisition Video and audio data collected YUV2, after converting the format, video to 4:2:0 YUV data format transformation
AVS video coding: the acquisition of video data encoded video elementary stream for the AVS
AVS system reuse: the AVS video elementary stream and audio stream multiplexed TS stream to
AVS stream broadcast: the formation of AVS-TS stream, through the air card, sent to the Circle with ASI interface, or satellite systems.
Supports any video source to S-Video and SDI input
Support MPEG2 transcoding, encoding format for the older version compatible Service
Encoding parameters can be customized to support any bit rate encoding
Streaming real-time TS-ASI output Support real-time flow of local preservation TS
Support real-time PS File generated AVS coding efficiency measured Table Out: AVS coding efficiency of MPEG-2 is more than twice the existing MPEG-2 technology transfer high-definition digital TV take 20Mb / s rate-bandwidth, while the use of AVS technology transfer programs of the same mass only 8Mb / s. AVS coding standards used on the existing transmission network, transmission capacity of the same programs can save more than half of the spectrum and the cable channel resources, the actual transfer of the program can double the capacity. The image quality was better than MPEG-2 codec and the image quality, based on the AVS standard definition digital television system can save at least half the transmission bandwidth for standard definition transmission services delivery system deployed to provide high-definition services almost directly.
AVS AVS encoder chain is an indispensable basic components, is available to TV station , Audio and video programming providers, streaming media service providers, network operators based operating tools.
As of today, joint source company also introduced a series of professional audio and video-based chip DSP Figure STB Core solution, based on PC Machine decoding cards, as well as pure software decoder software. Decoded in the PC environment, the client interface as shown AVS player.
AVS Play user interface Coding standard in the mainstream is still MPEG2 great environment, in addition to the founding of our own, we own the application of innovative technologies to develop? 1, requires insight and cooperation to join the second requires leadership at all levels of government support.
We believe that the advantages of AVS standard technology itself, we expect China AVS standard products for audio and video industries play a faster, more powerful impetus.
Joint source companies will continue to advanced audio and video technology, research, technology promotion and product development, welcome friends from all walks of cooperation.
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