User manual

DR2 User Manual
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Introduction
Introduction of DVR
DVR is a dedicated battery powered Digital Video Recorder designed for portable,
mobile Video and Audio Recording applications. The DVR hardware system uses
ARM9 processor and advanced hardware MPEG-4/2 video encoder, PCMCIA
interface, charging circuit, vibration/alarm circuit, video capture, IRIS camera interface
and MCU designed on board. The MCU is used to process remote control, push
buttons, power management, LANC and alarm. PCMCIA can support CF with FAT32
files system. Recorded video on CF card can be replayed on a PC instantly. PCMCIA
interface can also be used to connect other peripheral devices for future extension.
The OS of DVR is Linux. It handles multiple tasks in real time, for example; driver,
recording, AV synchronization, file management and external events etc.
The common Compact Flash card is used as a storage medium. The CF card is a solid
storage media with the best anti-shock capability available today. It is also low powered
and provides fast speed with multiple diversity options. It is very good choice for
mobile DVR applications.
DVR offers two encoding formats, MPEG-2 for DVD and MPEG4 for archive and
streaming video.
MPEG-2
MPEG-2 is a standard for generic coding of video and audio. It is widely used in
consumer electronics, such as DVD video disc, DVD player, DVB television
broadcasting etc. The DVR can record in MPEG-2 format which can be edited by any
video editing software or replayed by DVD player.
MPEG-4
MPEG-4 is the awesome new generation video standard with better video quality and
higher compression rate. For exceptional disc space saving, MPEG-4 is capable of
creating highly compressed video archives on a regular CD-ROM with almost the same
quality of DVD. One popular MPEG-4 format is DivX. It is the only technology that
enables streaming of video on the internet possible. Now, many DVD players can play
DivX files directly.