Electronic Control Device Staged Activation Data Transfer
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Solution Overview
Problem
Existing secure boot methods in electronic control devices require a longer time for activation, preventing communication data processing until the entire system is activated, which can lead to delays and inefficiencies.
Innovation Solution
An electronic control device with a first and second processing unit, where the second processing unit requires a longer activation time, and a transfer control unit capable of transferring communication data to both units, sets the first processing unit as the initial transfer destination until the second processing unit is activated, allowing communication data processing to begin before the second unit is fully activated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If secure boot verification is performed on all processing units before activation, then system security is improved, but activation time increases and communication data processing is delayed
Solution Approach 1:
The processing units are segmented into first processing units (faster activation) and second processing units (slower activation). The transfer control unit segments data transfer operations by directing communication data to available first processing units while excluding inactive second processing units, enabling partial system functionality during staged activation.
Solution Approach 2:
The first processing units are activated and made available for data transfer before the second processing units complete their secure boot verification. This preliminary action allows communication data processing to begin earlier, reducing overall system activation time while maintaining security through progressive activation.
2Productivity
If all processing units are activated simultaneously, then system functionality is improved, but activation time increases due to the slowest unit
Solution Approach 1:
The transfer control unit dynamically adjusts data transfer destinations based on the activation status of processing units. As second processing units complete their secure boot verification, the transfer control unit progressively includes them as data transfer destinations, enabling smooth transition from partial to full system functionality without idle waiting time.
Solution Approach 2:
Communication data processing continues uninterrupted by being directed to available first processing units during the activation of second processing units. This ensures continuous useful action rather than system idle time, maintaining productivity throughout the activation sequence.
Data Source
AI summary
An electronic control device includes: a first processing unit; a second processing unit; and a transfer control unit. The second processing unit requires a longer time for an activation process than the first processing unit, the transfer control unit includes a communication unit capable of transferring communication data received from an outside to the first processing unit and the second processing unit, the first processing unit includes a first control part that processes the communication data transferred from the transfer control unit, the second processing unit includes a second control part that processes the communication data transferred from the transfer control unit, and the transfer control unit does not set the second processing unit as a transfer destination of the communication data and sets the first processing unit to be included in the transfer destination until the activation process of the second processing unit is completed and sets at least the second processing unit as the transfer destination of the communication data when the activation process of the second processing unit is completed.