Data Processing Device Identification via Segmented Communication ID
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Solution Overview
Problem
In vehicle data processing systems, identifying a data overwrite object device among multiple devices with the same communication ID is challenging, leading to potential shortages of unique communication IDs.
Innovation Solution
Incorporating a communicator, device-specific information generator, and specifier within data processing devices to differentiate and identify the data overwrite object device by generating and matching first and second device-specific information, even when devices share the same communication ID.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a unique communication ID is assigned to each data processing device, then the data overwrite object device can be identified accurately, but the communication IDs will be insufficient when the number of devices increases
Solution Approach 1:
The identification mechanism is segmented into two parts: a shared communication ID that identifies the device type/group, and a device-specific information element that uniquely identifies the individual device. This segmentation allows multiple devices to share the same communication ID while still enabling unique identification through the additional device-specific information.
Solution Approach 2:
The identification system transitions from a single-dimensional communication ID to a two-dimensional identification space by adding device-specific information as a second dimension. This allows devices to be identified not only by their communication ID but also by their unique device-specific characteristics, effectively increasing the identification capacity without requiring more communication IDs.
2Quantity of substance
If the same communication ID is assigned to multiple data processing devices, then the shortage of communication IDs is avoided, but the identification of the data overwrite object device becomes difficult
Solution Approach 1:
The device-specific information is prepared and stored in advance in each data processing device before the data overwrite operation begins. When identification is needed, the data overwriter can immediately compare the requested device-specific information with the stored information without requiring additional communication or setup, enabling quick and accurate identification even among devices with identical communication IDs.
Solution Approach 2:
Device-specific information acts as an intermediary element between the communication ID and the actual device identification. While the communication ID groups devices together, the device-specific information serves as the mediating factor that allows the data overwriter to distinguish between individual devices within the same group, resolving the identification difficulty.
Data Source
AI summary
A data processing device has a communicator that receives, from a data overwriter, first device-specific information that identifies one of the plural same-ID data processing devices as a data overwrite object device having data to be overwritten by the data overwriter. Then, a device-specific information generator in the data processing device generates second device-specific information that is used to determine whether a subject data processing device is the data overwrite object device. Then, a specifier in the subject data processing device specifies that (i) the subject data processing device is the data overwrite object device or (ii) one of other plural same-ID data processing devices other than the subject data processing device is the data overwrite object device, based on a matching between (a) the first device-specific information received from the data overwriter, and (b) the second device-specific information generated by the device-specific information generator.