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| TI STB解决方案 | |||||
作者：TI 文章来源：本站 点击数： 更新时间：2007-3-18  |
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 A Set Top Box system would include: DSP - performs MPEG encoder/decoder, and voice/AC3/MPEG audio processing. RF Demodulation - performs COFDM/QAM/QPSK demodulation, Forward Error Correction (FEC) and video mux. MCU - controls system electronic, network, and user interface. Memory - stores executing code and data/parameters. Video Interface - selects video source to be decoded/encoded by ADC/DAC and DSP. Both the video front end and output stages require high-performance op-amps to amplify the video signal. Audio Interface - allows audio to be digitized by the audio codec and processed by DSP to provide high-quality audio for MPEG/AC3 requirements. User Interface - allows the user to communicate with system network, control video/audio I/O sources, and perform voice/data communication. Broadband & Wireless Connectivity - allows interactive TV, gaming, streaming audio and video, voice over IP (VoIP), and video telephony to transmit and receive through ADSL, cable modem, and 802.11 interface. Power Conversion - converts the input power from the AC adaptor to run various functional blocks. |
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