Microphone Boot for Combined Audio and Light Port

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Solution Overview

Problem

The challenge in computing devices is to reduce component size and enhance efficient placement while maintaining acoustic and light quality, particularly in thinner devices that require multiple functionalities in a shared space without compromising performance.

Innovation Solution

A combination port that integrates a microphone boot serving as both an audio input guide and a light guide, accommodating both a microphone and a light source within a single installation port, utilizing a microphone boot with a tapered cavity structure and transparent material to ensure efficient sound and light transmission while preventing leakage, and using seals to isolate components for improved sound quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If multiple components (microphone and light source) are integrated into a single port to reduce device thickness, then device thickness and component count are reduced, but acoustic quality and light transmission quality may deteriorate due to interference and space constraints

Engineering Contradiction:
Improvedevice thicknessVSAvoidacoustic and light quality
Core Design Contradiction:
Length of moving objectVSReliability

Solution Approach 1:

The patent divides the single port into two separate cavities: a first cavity for the microphone with acoustic optimization, and a second cavity for the light source with light transmission optimization. This segmentation allows each component to have its own dedicated space with optimized characteristics, preventing interference between acoustic and optical functions while maintaining the integrated port design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies different material properties to different regions: the first cavity uses materials optimized for acoustic transmission (e.g., acoustic mesh, foam), while the second cavity uses materials optimized for light transmission (e.g., transparent or translucent materials). This local quality differentiation ensures that each component operates with optimal performance characteristics within the integrated structure.

Inventive Principle:
Principle #3Local quality

2Device complexity

If a single port design is used to accommodate both microphone and light source, then manufacturing complexity and component placement complexity are reduced, but acoustic signal quality may deteriorate due to potential interference from the light source and limited acoustic space

Engineering Contradiction:
Improvecomponent placement complexityVSAvoidacoustic signal quality
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The port is segmented into two distinct cavities with separate openings: the first cavity has a first opening for acoustic signal entry and the second cavity has a second opening for light transmission. This segmentation simplifies manufacturing by providing clear spatial separation for each component while maintaining the benefit of a single integrated port structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary structures such as acoustic mesh, foam, or other acoustic treatment materials in the first cavity to mediate between the external environment and the microphone, ensuring optimal acoustic signal quality. Similarly, the second cavity uses transparent or translucent materials as intermediaries to optimize light transmission while maintaining structural integrity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Area of stationary object

If the microphone and light source are positioned close together in a thin device, then space efficiency is improved, but acoustic leakage and light interference may increase, compromising performance

Engineering Contradiction:
Improveport areaVSAvoidacoustic leakage and light interference
Core Design Contradiction:
Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent segments the port area into two distinct cavities with separate openings and pathways: the first cavity handles acoustic signals with its own opening and acoustic optimization, while the second cavity handles light transmission with its own opening and optical optimization. This segmentation prevents acoustic leakage and light interference even though the components are positioned close together in a thin device.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different material qualities are applied locally to each cavity: acoustic treatment materials (mesh, foam) in the first cavity to prevent acoustic leakage, and transparent/translucent materials in the second cavity to optimize light transmission. This local quality differentiation eliminates harmful interactions between the closely positioned components.

Inventive Principle:
Principle #3Local quality

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

This solution allows for a compact design with multiple functionalities in a single port, maintaining acoustic and light quality by effectively guiding audio inputs and outputting light indicators, enhancing the overall efficiency and thickness reduction of computing devices.

Implementation Method 1

a first cavity defined in a first end portion of the microphone boot, the first cavity defining a first opening at the first end portion of the microphone boot, and a second opening in a wall of the first cavity, the first opening being in fluid communication with the second opening

Methodology Applied
Scientific EffectAcoustic signal transmission: Sound

Implementation Method 2

utilizing a microphone boot with a tapered cavity structure and transparent material to ensure efficient sound and light transmission

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentEP3646576B1Combined microphone and lighting device and computing device having same
Publication Date: 2021.10.27 GOOGLE LLC
  • EP3646576B1 patent drawingFigure 1A
  • EP3646576B1 patent drawingFigure 1B
  • EP3646576B1 patent drawingFigure 1C

AI summary

A computing device may include a multi-functional port (130) in a base housing of the device. The multi-functional port may include an audio input (210) device that can receive and process external audio input signals through an opening (111) in the base housing. The multi-functional port may include a light source (220) that can output light through the opening in the base housing. The multi-functional port may include a microphone boot (250). The microphone boot may guide external audio input signals into to the audio input device for processing. The microphone boot may also guide light, emitted by the light source, out of the base housing.