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ST STi7105 STB HD AVC译码方案

作者:  时间:2008-10-20 13:16  来源:eaw
ST公司的STi7105具有HD视频译码(H264/VC-1/MPEG2),SD视频译码((H264/VC-1/MPEG2/AVS)以及多路音频译码(MPEG 1, 2, MP3, DD/DD+, AAC/AAC+,
WMA9/WMA9pro)等功能,可以用在包括有线电视,卫星电视, DTT, x- DSL/IP在内的各种STB市场.本文介绍了STi7105的主要特性, 方框图以及带DOCSIS的DVR有线电视STB方框图, HD STB方框图, 高清晰DVR 卫星电视STB方框图以及带DVR和WiFi家庭网络的DTT/宽带STB方框图.

The STi7105 uses state of the art process technology to provide an ultra low-cost, fully featured HD AVC decoder IC. It is a highly integrated system-on-chip suitable for STB
markets across all networks (cable/satellite/DTT/x- DSL/IP) worldwide.
The STi7105 is targeted at the latest Operator and CE manufacturer requirements for STBs which utilize advanced HD decoding (H264/VC- 1/MPEG2), and which conform to DVB, ISMA, ATIS-IIF, SCTE, DirecTV, ATSC, ARIB, CEA, ITU, OpenCable and MSTV specifications.
The STi7105 provides a solution for operators to specify a range of low-cost, high performance HD STBs including low-cost Zappers, IP clients, Interactive STBs, DVR standalone and DVR server/home network capable STBs, and with content delivery possible using broadcast or broadband networks, or both (hybrid STBs). The STi7105 keeps pace with the latest conditional access, DRM and trusted platform requirements of major operators worldwide by incorporating the latest generation of advanced security features.
The STi7105 offers current users of STs growing family of advanced decoding ICs
enhancements in performance and features whilst reducing cost and time-to-market for the next generation deployments.
STi7105 主要特性:
■ Advanced high definition video decoding (H264/VC-1/MPEG2)
■ Advanced standard definition video decoding (H264/VC-1/MPEG2/AVS)
■ Advanced multi-channel audio decoding (MPEG 1, 2, MP3, DD/DD+, AAC/AAC+,
WMA9/WMA9pro)
■ Linux, Windows CE and OS21 compatible ST40 applications CPU (450 MHz)
■ 32-bit DDR1/DDR2 compatible local memory interface
■ Multi-stream, DVR capable transport stream processing
■ Extensive connectivity (dual USB hosts, e-SATA, ethernet MAC/MII/RMII, MPX, and PCI)
■ Advance security and DRM support including SVP, MS-DRM and DTCP-IP
■ DVD data decryption


图1. STi7105方框图


图2.带DOCSIS的DVR有线电视STB方框图


图3.低成本IP客户HD STB方框图(有线以太网或WiFi连接)


图4.高清晰DVR 卫星电视STB方框图


图5.带DVR和WiFi家庭网络的DTT/宽带STB方框图

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