In-Vehicle Voice Interface Positioning by Sound Source Orientation

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Solution Overview

Problem

Current in-vehicle voice interaction systems display the voice interaction interface at a fixed position, failing to provide a good visual and interactive experience for users at different positions in a vehicle.

Innovation Solution

An in-vehicle interaction method and system that determines the orientation of a user's sound source within the vehicle and adjusts the display position of the voice interaction interface accordingly, allowing it to be displayed at different positions on the screen based on the user's location.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the voice interaction interface is displayed at a preset fixed position, then the display system is simple and stable, but users at different positions in the vehicle cannot obtain a good visual and interactive experience

Engineering Contradiction:

Improveadaptability to different user positionsVSAvoidcomplexity of display position control

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic display position adjustment based on sound source localization. The voice interaction interface is no longer fixed but dynamically repositioned on the display screen according to the detected user orientation. The system continuously monitors sound source position and adjusts the interface location in real-time, transforming a static display system into a dynamic one that adapts to user movements and positions within the vehicle.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies local quality by positioning the voice interaction interface at different locations on the display screen corresponding to different user positions in the vehicle. Instead of uniform display positioning, the system creates localized display regions tailored to each user's spatial location, ensuring that users at different positions (driver, front passenger, rear passengers) can interact with the interface from their respective viewpoints.

Inventive Principle:

Principle #3Local quality

2Measurement precision

If sound source localization is implemented to determine user orientation, then the visual and interactive experience is improved, but the system complexity and processing requirements increase

Engineering Contradiction:

Improveprecision of user orientation detectionVSAvoidcomplexity of sound source localization system

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical or visual tracking systems with acoustic field-based sound source localization. Instead of using cameras, sensors, or mechanical tracking devices to determine user position, the system utilizes microphones and acoustic signal processing to detect the orientation of sound sources. This substitution achieves precise user orientation detection while avoiding the complexity of mechanical or optical tracking systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces sound waves as an intermediary medium to indirectly detect user position and orientation. Rather than directly measuring user location, the system captures acoustic signals emitted by users, processes these sound wave patterns to determine orientation, and then uses this information for interface positioning. The sound waves serve as a mediator that bridges the gap between user physical position and digital interface placement.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Improves the visual and interactive experience of users by dynamically positioning the voice interaction interface, enhancing user interaction efficiency and personalization.

Implementation Method 1

Orientation information of a user in a vehicle is determined by sound source localization

Methodology Applied

Scientific EffectSound source localization: Acoustics

Data Source

PatentUS20250242696A1In-vehicle interaction method and system, controller, and vehicle

Publication Date: 2025.07.31 BYD CO LTD

AI summary

An interaction method applicable to an in-vehicle terminal. The method includes: responding to an input of a first voice of a user, and determining first orientation information of a sound source of the first voice relative to in-vehicle space of a vehicle; according to the first orientation information, determining a first target display position of a voice container responding to the first voice in the in-vehicle terminal; and displaying the voice container on a display screen according to the first target display position.