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Video Conferencing: IP-Based SD

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

Block Diagram

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Power Over Ethernet (PoE) AC/DC Adaptor

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 (3)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 01 Aug 2011 1538
HTM 8 KB 06 Apr 2010 1176
HTM 8 KB 05 May 2008 1880
    

Reference Designs

Description Part # Company
12V, 1A Isolated PoE PD Power Supply Reference Design PMP940 Texas Instruments
Isolated, Low Cost, Non-Synchronous PoE PD Power Supply Reference Design PMP717 Texas Instruments
Isolated, Synchronous Flyback, 3.3V @ 3A or 5V @ 2A PoE PD Power Supply Reference Design PMP929 Texas Instruments
Non-Isolated PoE PD Power Supply Reference Design PMP841 Texas Instruments

Product Bulletin & White Papers

White Papers (4)

Title Abstract Type Size (MB) Date Views
PDF 2.5 MB 11 Apr 2012 1171
PDF 667 KB 05 Mar 2012 2368
PDF 150 KB 28 Aug 2009 1603
PDF 470 KB 20 Mar 2007 28

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C66x Multicore SOC Online Training for KeyStone Devices
This self-paced training course provides an introduction to the various components that make up the C66x KeyStone devices
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Multicore Software Development Kit (MCSDK) Online Training
This self-paced training course provides an introduction to the various components that make up the C66x KeyStone devices.
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Texas Instruments' Training Lab - ARM Tech Conference 2010
This self-paced training course provides an introduction to the various components that make up the C66x KeyStone devices.
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Implementing Encoding/Decoding High Definition Codecs
Encoding/decoding HD content along with info on available libraries to reduce time to market for video apps.

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Technical Introduction to DM36x - TI's low power, low cost video processor
The DM365 processor core is an ARM926EJ-S RISC processor offering speeds up to 300MHz.
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