Log management device, in-vehicle system, and data transfer method for log management device
The log management device with a DMA controller and priority-based data transfer mechanism addresses the issue of data overwriting in data recorders by prioritizing log data transfer, ensuring critical data is secured.
JP2026111676APending Publication Date: 2026-07-06RENESAS ELECTRONICS CORP
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- RENESAS ELECTRONICS CORP
- Filing Date
- 2024-12-24
- Publication Date
- 2026-07-06
Smart Images
Figure 2026111676000001_ABST
Abstract
The present invention provides a log management device, an in-vehicle system, and a data transfer method for a log management device that prioritizes the transfer of desired log data to storage. [Solution] The log management device 1 includes a CPU 2 that outputs log data, a log buffer 41 that stores the log data, and a DMA controller 3 that transfers the log data stored in the log buffer 41 to the storage 5. The DMA controller 3 includes a priority table storage unit 31 that stores a priority table including a priority set that defines the priority for each tag associated with the log data, and a transfer necessity determination circuit 32 that determines which log data stored in the log buffer 41 will not be transferred to the storage 5 based on the priority set.
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