In-Vehicle Infotainment STR Memory Control for Fast Boot

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Solution Overview

Problem

In-vehicle infotainment systems often require lengthy boot-up times, inconveniencing users who need to access features quickly, such as setting a navigation destination upon entering the vehicle.

Innovation Solution

Implementing a suspended-to-random-access-memory (STR) mode with logic for controlling the IVI system when the vehicle is off, providing operating voltage to RAM and refresh logic, and switching to active mode upon ignition or accessory turn-on, allowing for quick booting without software loading and initialization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the IVI system performs full booting with software loading and initialization, then system reliability is ensured, but booting time increases

Engineering Contradiction:

Improvesystem reliabilityVSAvoidbooting time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system maintains system state data in RAM during suspended-to-random-access-memory (STR) mode, performing preliminary preparation so that when the vehicle ignition is turned on, the IVI system can quickly restore and display the previous state without full software loading and initialization, thereby reducing booting time while ensuring system reliability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the operational parameters of RAM by providing operating voltage in STR mode to maintain data, and switching to active mode with full voltage supply when ignition is on, enabling quick booting by skipping software loading and initialization steps while maintaining system reliability through parameter adjustment

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the IVI system enters sleep mode to save energy, then energy consumption is reduced, but system readiness time increases

Engineering Contradiction:

Improveenergy consumptionVSAvoidsystem readiness time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The system dynamically adjusts its operational state based on vehicle ignition status, entering STR mode (a dynamic intermediate state between full operation and sleep mode) when the vehicle is off to reduce energy consumption, and quickly transitioning to active mode when ignition is on to ensure rapid system readiness, thus balancing energy savings with readiness time

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250355676A1In-vehicle infotainment system and operation control method thereof

Publication Date: 2025.11.20 HYUNDAI MOTOR CO LTD

AI summary

An in-vehicle infotainment (IVI) system of a vehicle can include a computing device for controlling an operation of the IVI system. The computing device may include a random access memory (RAM) for storing information necessary for an operation of the computing device, and suspended to RAM (STR) logic for controlling the IVI system in an STR mode when ignition or an accessory (ACC) of the vehicle is off. The computing device may provide an operating voltage to each of the RAM and the STR logic in the STR mode in accordance with the STR logic.