| 摘要 |
A multi-stage video memory management system for a vehicle event recorder is provided that includes the management of a plurality of stage memories and the transfer of data therebetween. A managed loop memory receives data from a video camera in real-time and continuously overwrites expired data determined to be no longer useful. Data in the managed loop memory is transferred to a more stable memory in response to an event to be recorded. An event trigger first produces a signal causing data transfer between the managed loop memory and an on-board, high-capacity buffer memory, suitable for storing video series associated with a plurality of events. Subsequently, a permanent data store receives data from the high-capacity buffer memory whenever the system reaches a predetermined distance from a download station.
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