视频监控正在逐步的走近IP网络。IP网络摄像机定义为一种组合了网络和视频处理功能的摄像机。网络摄像机具有它自己的IP地址和计算功能以便处理网络通信。网络摄像机能通过网络捕捉和发送图像,用户通过网络可以随时随地进行观看和控制。

TI公司的DSP用于多种标准/非标准视频格式的图像压缩。除此之外，TI公司的DSPs还提供智能图像分析功能，支持不同类型的网络协议。数字视频传输正快速适应安全和监督系统的标准要求。有线和无线连接都很关注安全和监督系统的设计。

IP网络摄像机组成元器件为：

TMS320DM644x数字媒体处理器

TMS320DM64xTM数字媒体处理器

下图为基于达芬奇(DaVinciTM)的IP网络摄像机方框图

下图为基于TMS320DM64x™数字媒体处理器的IP网络摄像机方框图

下面对个元器件的性能和方框图进行描述：

The TMS320DM6446/3 leverage TI’s DaVinci™ technology to meet the networked media encode and decode application processing needs of next-generation embedded devices. The DSP subsystem supports a programmable audio/video multimedia engine that provides application

flexibility and support for future CODEC standards. The integrated ARM®-based application processor supports all the required call control,device drivers and network provisioning. The Video Processing subsystem supports functions such as video resizing, On Screen Display (OSD) support, and a full compliment of video I/O capabilities.

Key Features

★TMS320C64x+™ DSP performance: 600 MHz

★ ARM926EJ-S performance: 300 MHz

★ Video processing subsystem (VPSS) with configurable video/imaging peripheral

★ Highly integrated peripherals; including video accelerators, (4) DACs,hardware OSD, USB 2.0 and more

★ Advanced connectivity with 10/100 Ethernet MAC; half or duplex plus QoS support

★ Ready-to-use application software such as H.264, H.263, MPEG4,G.729ab, WVM9 and more

★ Supports glueless interfaces for common video and audio formats

★ Performance real-time image processing, resizing, auto focus and more

★ DDR2 and SDRAM support

★ Packaging: 361-pin Pb-Free BGA (ZWT suffix; 0.8-mm pitch)

Applications

★ Set-top boxes

★ Networked digital media centers

★ Home security

TMS320DM6446数字媒体片上系统（DMSOC）方框图

TI’s video surveillance solutions are primarily based on the highperformance DM64x™ DSP-based digital media processors. The DM64x DSP-based digital media processors have on-chip video ports for easy connection to video devices and are capable of handling both video and audio encode and decode for IP-based video surveillance applications.The single, programmable digital media processor is a cost-effective solution because the need for external PCI or EMAC is eliminated.

Key Features

★ Performance up to 5760 MIPS at 720 MHz

★ 400/500/600 MHz options also available

★ Multiple input/output glueless interfaces for common video and audio formats

★ Performance real-time video encoding, decoding and/or transcoding

★ Three dual-channel video ports support simultaneous video input and output

★ Advanced connectivity with 10/100 Ethernet MAC and 66-MHz PCI

★ Ready-to-use application software such as MPEG4, MPEG2, MPEG1,WMV9, H.263, H.261, M-JPEG, JPEG2000, JPEG, H.264 and more

Applications

★ Network camera-based surveillance and IP video nodes

★ Video-on-demand set-top boxes, personal video recorders and digital media centers

★ Statistical multiplexers and broadcast encoders

★ IP-based video conferencing and IP-based videophones

TMS320DM642数字媒体处理器方框图