相关内容请参考:iPVP642 iPVP in IP STB
Overview
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| Ittiam iPVP320 reference design hardware platform |
Ittiam's iPVP320 reference design offers a complete embedded software solution along with an application specific reference platform on TMS320DM320 processor from TI. The high level of integration offered by the DM320 allows for a cost effective video phone implementation for personal video telephony and light conferencing applications.
The dual core architecture of the DM320 enables integration with popular operating systems such as Windows CE and Linux bringing together video telephony and internet appliances.
Features
•Full duplex audio and video
•Hands-free speaker phone
•Multi-way personal video and audio conferencing
•Supports multiple video coding standards including H.263 and MPEG4
•Supports multiple video resolutions at natural video frame rate
•Supports wide range of speech coding standards covering both narrow and wide band scenarios
•Built on Linux Operating System
•Supports SIP
•Fully integrated hardware and software solution
•Reference designs with interfaces for speaker, microphone, TFT color LCD, TV and CCD camera
•IP Connectivity with Ethernet and Wireless LAN interfaces
Target applications
•Standalone IP video phones for home and enterprise applications
•Portable embedded applications such as integration with Portable Media Players
•Light personal video conferencing for small and medium enterprises
Specification: Software
•Video Codec
°MPEG-4 up to CIF resolution at 30 fps
°H.263 up to CIF resolution at 30 fps
•Multi-way conferencing
°MPEG-4: 3-way at QVGA and 30 fps; 4-way at QCIF and 30 fps
°H.263: 3-way at QVGA and 30 fps
•Full Range of speech coders
°Narrow Band: G.711, G.723.1A, G.729AB
°Wideband: G.722.1
•Acoustic Echo Canceller: For speaker-phones with configurable echo tail lengths, rapid convergence, robust double talk detection
•Silence Suppression: Voice activity detection (VAD) / Comfort noise generation (CNG)
•Telephony Functions: DTMF tone generator and detector, call progress tones generator and detector
•Adaptive Jitter Buffer: Enhanced video and audio quality with various network conditions
•Network/Signaling Features
°Media Control - RTP / RTCP
°Network Control - TCP/IP/UDP, DHCP/FTP
•Integrated Framework with
°OS abstraction layer
°Hardware abstraction layer
Hardware Architecture
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Specification: Hardware
•Processor: TMS320DM320™ from Texas Instruments
•Memory
°4 Mb Flash
°32 Mb SDRAM
•Audio/Video Interfaces
°QVGA LCD display (320x240)
°On board speaker and microphone
°External Handset and Headset interface
°Composite Out port
°PAL camera input
•Communication Interfaces
°Ethernet port
°WLAN interface
°Single socket to support multiple storage devices like Smart Media, Memory Stick, SD Card and MM card
°USB host and slave port (full speed)
•System Interfaces
°Keypad input (alphanumeric and scroll keys)
°IR port for remote control support
°IDE interface to Hard-disk
°Touch Screen support with LCD
°Dual UART port
°JTAG port
°5V (4A) power input
°Expansion connectors for future use
基于TI TMS320DM320开发的网络视频监控应用参考设计。DM320是针对影像和视频流平台，基于多处理器架构之上集成有DSP和RISC处理器（200 MHz 的ARM926 EJ），其特色是利用DM320自身的DSP和多媒体加速器实现视频及音频的编码，低功耗、高集成度、低成本。
硬件
* TI TMS320DM320处理器
* CMOS/CCD摄影机接口或模拟视讯输入
* 麦克风输入
* 支持电视显示器之模拟视讯及音讯输出
* 硬盘驱动
* 实时时钟
* 键盘、USB、IR接口
* 配选LCD显示器及使用者接口
软件
* MPEG-4简易编码集(encoder & decoder)
--VGA分辨率,每秒30 frames
* ADPCM Audio Encoder & Decoder
* Real Time Clock overlay on encoded frames
* Fast Forward and Rewind (2x to 16x) 支持 playback
* Pause and Frame Advance
* 键盘、USB、IR及LCD驱动程序
* 档案管理系统(硬盘专用)
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