基于SRAM接口的多路视频采集压缩模块  

Multi-channel video capture and encoding module based on SRAM-style interface

作　　者：张群[1] 谢胜曙[1] 潘滟[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《微计算机信息》2008年第32期257-259,共3页Control & Automation

摘　　要：针对当前视频产品对在屏显示功能和接口多样化的需求,设计并实现了一种基于SRAM接口的多路视频采集压缩模块。该模块利用视频处理芯片TW2835来实现多路视频采集、在屏显示外部环境信息和画面预览,利用简单的SRAM接口与主机相接,实现了简洁的接口设计。为方便移植到嵌入式产品中,又设计了基于SRAM接口的linux2.6版本驱动。在嵌入式平台上测试得出,该模块性能稳定,处理后的图像画面清晰流畅、OSD显示正常,SRAM接口协议简单,符合视频产品的设计需求。In view of the video production demanding on screen display and interface diversification, a set of multi-channel video capture and encoding module is designed and implemented. The whole design is compact because of this module uses TW2835 to achieve multi-channel video capturing and put environment information on screen display,and on the other hand,the module uses the SRAM-style interface to communicate with the host. In order to transplant to embedded hardware expediently,we design the linux 2.6 driver for the module.Test has shown that the image processed by the module integrity and the SRAM-style interface is easy to realize.The module is suitabe for video surveillance designing.

关 键 词：在屏显示 视频监控 SRAM接口 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]