Linux Based Digital Video Recorder System

• Main Authors: Ming-Shuan Lee, 李名栓
• Other Authors: Mon-Chau Shie
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/95394530820896918092

碩士 === 國立臺灣科技大學 === 電子工程系 === 91 === For a long time, the security system is a line of defense crimes. The traditional security system storage device is tape which is damage easily and need large storage space to be stored, and it don’t support video compressed, so video information is very huge. Recently, the digital security system is in for traditional security system, and it support video compressed format which are MJPEG, Wavelet and MPEG-2 specifications, etc., and these specifications neither have high compression ratio nor support long time of video recorded. For hardware, a capture card support one to four numbers of video channel, therefore the cost of system is higher. Others denounce it don’t have enough stable and reliable since it base on Microsoft Windows series. In this paper, the digital video capture and storage system support sixteen video channels, and this has two principles. The first is combining a high speed switch array chipset (MT8816) transferring video information from sixteen video channels to four video capture chipsets (BT878) and the other is a PCI-PCI Bridge connecting four video capture chipsets to PCI bus. These components are fabricated become a PCI card integrated into x86 computer system, which is built all hardware part of the digital video system. The digital video system not only increase stable of system performed also flexibility of platform selected as it base on Linux operation system. As soon as the device driver is loaded to Linux kernel, the device is usable under Linux operation system. Through the application of video manager with GUI, user can easy to operate it. The feature is listed in the below: (1) Supports sixteen video channels and reduce hardware cost. (2) Supports MPEG-4, and supply long recoded time and high video quality. (3) Base on Linux, and provide high stable and high reliable of video system. (4) Windows file system compatible, and backup video information simply. (5) Friendly GUI, convenient for operator and manager.