Vehicle Multimedia Power Control for Extension Devices

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Solution Overview

Problem

Existing vehicle-mounted multimedia apparatuses experience increased power consumption when extension devices are connected, as existing functional modules continue to consume standby power even when replaced by new modules, leading to inefficient power usage.

Innovation Solution

A vehicle-mounted multimedia apparatus with a control device that recognizes connected extension devices and disconnects power supply to corresponding existing functional modules, allowing only the new modules to operate and reducing overall power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an extension device is connected to increase functionality, then the functional capability of the multimedia apparatus is improved, but the power consumption increases because existing functional modules continue to consume standby power even when replaced

Engineering Contradiction:

Improvefunctional capabilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts the power supply control function from the existing multimedia apparatus by introducing a separate power supply device that independently manages power distribution. This allows the system to disconnect power from replaced functional modules while keeping the extension device powered, thereby resolving the contradiction between maintaining functional capability and reducing power consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent implements dynamic power management where the power supply state of functional modules changes based on their usage status. When a functional module is replaced by an extension device, the power supply is dynamically adjusted to disconnect from the original module and connect to the extension device, enabling the system to adapt power consumption to actual functional requirements.

Inventive Principle:

Principle #15Dynamics

2Reliability

If existing functional modules are kept powered to maintain system readiness, then the system responsiveness is improved, but unnecessary power is consumed when modules are replaced by extension devices

Engineering Contradiction:

Improvesystem readinessVSAvoidstandby power

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The power supply device autonomously determines which functional modules require power based on their replacement status, eliminating the need for continuous manual monitoring. The system automatically identifies replaced modules and disconnects their power supply, achieving self-service power management that prevents energy waste while maintaining system readiness for non-replaced functions.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8719611B2Checking functional module ID in connected extension device to power instead of existing corresponding functional module

Publication Date: 2014.05.06 TOYOTA JIDOSHA KK

AI summary

The present invention is related to a vehicle-mounted multimedia apparatus 1 which has at least one functional module 42A, 42B, 42C . . . 42N which is powered from a power source 50 to operate and an interface 12 to which an extension device 20 is to be connected. When the extension device 20 is newly connected to the interface 12, if there is an existing functional module 42B (referred to as a corresponding functional module), which corresponds to a functional module 22 provided in the extension device 20, among the existing functional module 42A, 42B, 42C . . . and/or 42N which already exists in a state before said connection of the extension device, said vehicle-mounted multimedia apparatus 1 stops powering the corresponding functional module 42B and powers the functional module 22 provided in the extension device 20.