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Video Conferencing: IP-Based SD

Video Conferencing: IP-Based SD Solutions from Texas Instruments.

Block Diagram


AC/DC Adapter Amplifier for Microphone Amplifier for Speaker Amplifier for Video Camera Amplifier for Video Camera Battery Backup Charger Clock DC/DC Buck Controller DM642(TM) DSP based Digital Media Processor Dual Output LDO Ethernet PHY Tranceiver LDO PoE IEEE 802.3af Power Solution Power MUX Supply Voltage Supervisor Video Amp Video Decoder Video Decoder Video Encoder Voice CODEC

Design Considerations

IP Based Video Conferencing Endpoint

Overview:
Video conferencing Conferencing Endpoints are terminals used to make point to point video-enabled calls. Video conferencing consists of an input camera and base unit interfaced to an output display. Data transmission is over IP or ISDN networks. The base unit consists of a DSP with integrated on-chip video ports to process audio and video encoding/decoding.

The core subsystems include:

  • Video Processor
     - Performs real-time image capture processing, compression/decompression, color space conversion, real time display, and data packetization for data communication over the IP/ISDN networks.
     
  • Video Decoder
     - Digitizes, demodulates, and decodes the NTSC/PAL/SECAM/S- video to be used by the video processor.
     
  • Video Encoder
     - Converts digital component video signals into the analog domain for display.
     
  • Memory (FLASH & SDRAM)
    - Stores executing code and data/parameters.
     
  • Audio Interface (Voice Codec)
    - Interfaces the microphone/speaker and uses a Codec to digitize audio signals.
     
  • Network Interface (Ethernet PHY Transceiver)
    - Transmits and receives audio and video data packets through the IP/ISDN networks.
     
  • ARM9 (or suitable GPP)
     - Moderates Input/Output between the Microphone, Speaker, Keyboard and the Digital Signal Processor.

Application Notes

  • HDMI Transmitter/Receiver Support on TMS320DM6467 (spraav4.htm, 8 KB)
    05 May 2008 Abstract
    

Product Bulletin & White Papers

White Papers

  • HD Transcoding Connects Home Video Applications White Paper (spry097.pdf, 470 KB)
    20 Mar 2007 Download

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