摘要
本文提出了一种新的车载数字硬盘录像机的设计方案,基于两颗高性能DSP,采用先进的MPEG4压缩算法,通过PCI组成四路实时双码流多功能车载数字硬盘录像机。行车时选用CF卡为存储设备,运用停车自动备份的策略,这样可避免在行车过程中使用机械硬盘,大大提高了车载数字硬盘录像机的可靠性。此车载数字硬盘录像机除了可以录像、放像和传输外,还具有广告影片播放、行车记录等较强的多媒体应用,有广阔的应用前景和增值应用空间,完全可以扩展为一个集监控、行车记录、导航和多媒体应用的车载平台。
This paper bring forward a new design scheme of auto-carried digital hard disk recording video. The system is based on two high-powered DSP and adopts advanced MPEG4 compressed algorithm connected by PCI. Therefore It becomes a four-channel real-time double encoding stream muhifunctional digital hard disk video. The system chooses CF card rather than hard disk to be storage so that reliability is largely improved. Besides recording , playing back and transmission, the system also can play advertisement video and records the traveling process. It has wide application foreground and increment space. The digital hard disk recording video can be extended to be a application flat including monitoring, travel recording, navigation and multimedia.
出处
《微计算机信息》
北大核心
2008年第26期227-229,共3页
Control & Automation
关键词
车载
数字硬盘录像机
双码流
MPEG4
停车备份
auto-carried
digital hard disk recording video
double encoding stream
MPEG4
backup while parking
