In-Vehicle Device Memory Prioritization for Data Transmission
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Solution Overview
Problem
In-vehicle devices face challenges in transmitting vehicle information to external servers when communication networks are unreliable, leading to memory overflow and the deletion of essential data, which can affect service operations and quality.
Innovation Solution
An in-vehicle device with an information accumulation portion that prioritizes and removes low-priority vehicle information from memory when space is limited, reconstructing transmission files to ensure high-priority data is sent to the external server, using request information with priority and selection information to manage data transmission effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If vehicle information is accumulated in memory when communication network fails, then more information can be transmitted later, but memory space becomes insufficient and old information must be deleted
Solution Approach 1:
The patent changes the parameter of information selection by introducing priority levels. Instead of简单地 accumulating all information or deleting old information, the system categorizes information by priority (high, medium, low) and selectively manages storage based on these parameters, allowing memory space to be optimized while ensuring critical information is preserved
Solution Approach 2:
The patent applies local quality by treating different pieces of vehicle information differently based on their priority. High-priority information receives preferential treatment in terms of storage retention, while low-priority information is deleted first when space is needed. This localized differentiation resolves the contradiction between accumulating quantity and maintaining reliability
2Quantity of substance
If old vehicle information is deleted to make space for new information, then memory can continue storing information, but useful information for external server services is lost
Solution Approach 1:
The patent introduces a priority parameter to differentiate between various pieces of vehicle information. By assigning priority levels (high, medium, low), the system can make informed decisions about which information to retain and which to delete, transforming the simple first-in-first-out deletion approach into a selective retention strategy that preserves useful information
Solution Approach 2:
The patent implements selective discarding of low-priority information while recovering and retaining high-priority information. When memory space is insufficient, the system identifies and deletes only the low-priority information, thereby making space for new information without losing critical data that is useful for external server services
3Reliability
If all vehicle information is transmitted to external server, then service quality improves, but transmission time and network bandwidth increase
Solution Approach 1:
The patent extracts only the necessary high-priority vehicle information for transmission to the external server, rather than transmitting all accumulated information. By separating high-priority information from low-priority information and transmitting only the essential data, the system improves service quality while reducing transmission time and network bandwidth consumption
Solution Approach 2:
The patent applies partial action by transmitting only a subset of the accumulated vehicle information - specifically, the high-priority information that is most critical for external server services. This partial transmission approach is sufficient to maintain service quality without incurring the full cost of transmitting all information
Data Source
AI summary
An in-vehicle device includes: an information receiving portion configured to receive request information for an external server to request transmission of pieces of vehicle information via a communication network; an information collection portion configured to collect the pieces of vehicle information from devices in a vehicle based on the request information received by the information receiving portion; an information accumulation portion configured to accumulate, in a memory, the pieces of vehicle information collected by the information collection portion; and an information transmission portion configured to transmit the pieces of vehicle information accumulated in the memory to the external server, wherein, when a remaining capacity of the memory becomes smaller than a threshold, the information accumulation portion accumulates, in the memory, vehicle information with a high priority by removing vehicle information with a low priority from the pieces of vehicle information.