单片机与嵌入式系统应用
單片機與嵌入式繫統應用
단편궤여감입식계통응용
MICROCONTROLLER & EMBEDDED SYSTEM
2012年
7期
56-58,62
,共4页
FPGA%Nios%IP核%多路数据采集%视频解码
FPGA%Nios%IP覈%多路數據採集%視頻解碼
FPGA%Nios%IP핵%다로수거채집%시빈해마
FPGA%Nios%IP core%multi-channel data acquisition%video decode
针对同时处理高速多路视频数据的需求,以NiosII软核CPU为核心,通过在FPGA上构建可编程片上系统(Sys—ternOnProgrammableChip,SOPC),利用SOPC系统自定义外设接口,配合DMA技术,完成对A/D转换后的多路视频数据的同时解码采集。视频解码模块采用滑动窗法快速检测定时基准信号。FPGA可重构的特性可以使系统根据实际应用需要在原方案基础上扩展、裁减功能模块,并根据资源情况重构系统,达到资源与效率的最优匹配。
針對同時處理高速多路視頻數據的需求,以NiosII軟覈CPU為覈心,通過在FPGA上構建可編程片上繫統(Sys—ternOnProgrammableChip,SOPC),利用SOPC繫統自定義外設接口,配閤DMA技術,完成對A/D轉換後的多路視頻數據的同時解碼採集。視頻解碼模塊採用滑動窗法快速檢測定時基準信號。FPGA可重構的特性可以使繫統根據實際應用需要在原方案基礎上擴展、裁減功能模塊,併根據資源情況重構繫統,達到資源與效率的最優匹配。
침대동시처리고속다로시빈수거적수구,이NiosII연핵CPU위핵심,통과재FPGA상구건가편정편상계통(Sys—ternOnProgrammableChip,SOPC),이용SOPC계통자정의외설접구,배합DMA기술,완성대A/D전환후적다로시빈수거적동시해마채집。시빈해마모괴채용활동창법쾌속검측정시기준신호。FPGA가중구적특성가이사계통근거실제응용수요재원방안기출상확전、재감공능모괴,병근거자원정황중구계통,체도자원여효솔적최우필배。
Aiming at the demand of processing high-speed multi-channel video data at the same time, taking NiosII soft-core CPU as the core,System On Programmable Chip(SOPC) is constructed on FPGA, and synchronous decoding acquisition of multi-channel video data after A/D convertion is realized using peripheral interfaces customized by SOPC system and DMA technology. Video decoding module uses sliding window method to rapidly detect timing benchmark signals. Because of the reconfigurahle characteristics of FPGA,the sys- tem realizes the extension on the basis of the original proposal and the cutting of function module aecoroding to actual application. And the system can be reconstructed according to resource condition, so as to realize the optimal matching of resource and efficiency.