Manual Bluetooth Hands-Free Call Transfer Control

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Solution Overview

Problem

Existing Bluetooth hands-free systems automatically transfer active calls from mobile devices to vehicle systems, causing user dissatisfaction as it may not always be desirable and can be inconvenient.

Innovation Solution

A method and system that allows users to manually control the transfer of audio signals from a mobile device to a hands-free device in a vehicle multimedia system by displaying a confirmation message and requiring user confirmation before initiating the transfer, thereby allowing users to decide whether to switch an active call to hands-free mode.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If automatic transfer of active calls is implemented, then the convenience of hands-free operation is improved, but user control and satisfaction deteriorate due to unwanted automatic disconnections

Engineering Contradiction:

Improvehands-free operation convenienceVSAvoiduser control flexibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

Instead of automatically transferring calls and requiring user action to disconnect (automatic initiation), the system inverts the approach by requiring user confirmation to transfer calls (manual initiation). This gives users control over when transfer occurs, preventing unwanted disconnections while still enabling hands-free operation when desired.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The system implements feedback by notifying the user when a call transfer is requested and awaiting user confirmation. This feedback loop allows users to be aware of and control the transfer process, ensuring that automatic transfers only occur when the user intends them, thus resolving the contradiction between convenience and control.

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If manual confirmation is required for call transfer, then user control is improved, but the complexity of the connection process increases

Engineering Contradiction:

Improveuser control flexibilityVSAvoidconnection process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system applies partial action by requiring confirmation only when necessary (when a call is actively being transferred). For other operations or states, the system maintains simple automatic behavior. This selective application of confirmation requests adds control where needed without unnecessarily complicating the overall connection process.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9924011B2Manual bluetooth hands free transfer mode

Publication Date: 2018.03.20 HYUNDAI MOTOR CO LTD

AI summary

A method for controlling audio signal transfer from a mobile device to a hands-free device in a vehicle multimedia system includes receiving by a processor of the vehicle multimedia system a request from a mobile device to connect to a hands-free device. The processor determines if the mobile device is engaged in an active call. In response to determining that the mobile device is engaged in an active call, a confirmation message is displayed to confirm that a user wishes to transfer an audio signal associated with the active call to the hands-free device. In response to receiving user's confirmation to transfer the active call, the audio signal is transferred from the mobile device to the hands-free device.