In-Vehicle Gateway Startup Using a Fast Secondary Processor

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Solution Overview

Problem

In-vehicle systems face prolonged initialization times due to increased functionality and complexity of devices, leading to increased overall startup time as multiple devices sequentially complete their initialization processing.

Innovation Solution

An in-vehicle communication device with a first processing unit and a second processing unit, where the second unit completes initialization faster and transmits start-up instructions to other devices before the first unit is finished, allowing parallel initialization and reducing overall system startup time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If devices are equipped with higher functionality and larger processors, then device capability is improved, but initialization processing time increases

Engineering Contradiction:

Improvedevice functionalityVSAvoidinitialization processing time

Core Design Contradiction:

Adaptability or versatilityVSDuration of action of moving object

Solution Approach 1:

The gateway device is divided into multiple processing units (first processing unit and second processing unit) with different initialization times. The second processing unit completes initialization faster and can independently transmit start-up instructions to other devices, allowing the system to initiate device startup before the first processing unit finishes initialization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second processing unit performs preliminary action by transmitting start-up instructions to other devices before the first processing unit completes its initialization. This allows other devices to begin their initialization processes in parallel, reducing the overall system startup time.

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If multiple devices are sequentially started up, then system stability is maintained, but overall startup time significantly increases

Engineering Contradiction:

Improvesystem stabilityVSAvoidoverall startup time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The gateway's processing functionality is segmented into multiple units with different initialization characteristics. The faster second processing unit can independently handle device start-up commands, enabling parallel initialization of multiple devices rather than sequential processing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second processing unit acts as an intermediary that can independently transmit start-up instructions to other devices. This intermediary function allows the system to bypass the waiting period for the first processing unit's initialization completion, enabling faster system-wide startup while maintaining controlled device activation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11840181B2In-vehicle communication device and method for starting up in-vehicle device

Publication Date: 2023.12.12 SUMITOMO WIRING SYSTEMS LTD

AI summary

An in-vehicle communication device and a method for starting up an in-vehicle device are provided. An in-vehicle communication device according to the present embodiment includes: a first processing unit; a second processing unit; and a communication unit. The first processing unit, upon being started up, performs initialization processing thereof. The second processing unit requires a shorter time from start-up until completion of the initialization processing than the first processing unit does. Another in-vehicle device is connected to the communication unit via a communication line, and the communication unit communicates with the other in-vehicle device in accordance with control of the first processing unit and the second processing unit. The second processing unit, after completing the initialization processing thereof, transmits an instruction to start up the other in-vehicle device via the communication unit.