Dual Chassis Vibration Detection for Voice Command Switching
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Solution Overview
Problem
Existing information processing apparatuses struggle to accurately distinguish between user-intended vibrations and ambient vibrations when switching the voice command function on and off, leading to unintended activation due to vibrations from a table.
Innovation Solution
The apparatus includes first and second vibration detecting units on opposing chassis, with a controller determining contact state based on relative characteristics such as strength ratio and detection time difference, and an opening-closing mechanism to differentiate between user contact and ambient vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the voice command function switches ON/OFF whenever tapping is detected by a single sensor, then convenience is improved, but false activation from ambient vibrations occurs
Solution Approach 1:
The patent divides the vibration detection function into two separate sensors: a first vibration detecting unit on the first chassis and a second vibration detecting unit on the second chassis. This segmentation allows the system to distinguish between vibrations on different surfaces, enabling accurate differentiation between user tapping and ambient vibrations from the table, thereby resolving the contradiction between convenience and detection accuracy.
Solution Approach 2:
The controller acts as an intermediary that processes vibration data from both sensors and uses relative characteristics (strength ratio and detection time difference) to determine contact state. This intermediary processing layer filters out false activations by comparing vibrations across both chassis, maintaining convenience while improving reliability.
2Device complexity
If a single vibration sensor is used to detect tapping, then device complexity is reduced, but measurement precision of contact state deteriorates
Solution Approach 1:
The patent segments the vibration detection system into two separate units positioned on different chassis. This segmentation provides multiple measurement perspectives that enable precise determination of contact state by analyzing the relative characteristics of vibrations detected at different locations, thereby improving measurement precision without excessive complexity.
Solution Approach 2:
The patent adds a spatial dimension to vibration detection by placing sensors on separate chassis rather than using a single sensor. This dimensional expansion allows the system to measure vibration propagation characteristics and relative timing, significantly improving contact state determination precision through multi-point measurement.
3Ease of operation
If vibration detection sensitivity is increased to detect user tapping, then ease of operation is improved, but false activation from ambient vibrations increases
Solution Approach 1:
The patent converts the harmful effect of ambient vibrations into a useful differentiation criterion. By detecting vibrations on both chassis and comparing their relative characteristics (strength ratio and time difference), the system uses the table vibration information to identify and reject false activations, thereby maintaining high sensitivity while eliminating spurious responses.
Solution Approach 2:
The system implements feedback by continuously monitoring vibrations on both chassis and using the relative characteristics to determine contact state. This feedback mechanism allows the system to adaptively distinguish between genuine user tapping and ambient vibrations, maintaining operational sensitivity while filtering out false positives through comparative analysis.
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 enables more accurate switching of the voice command function, ensuring it operates only when intended by the user and reducing false activations from ambient vibrations.
Implementation Method 1
at least one first vibration detecting unit is provided in the first chassis; at least one second vibration detecting unit is provided in the second chassis
Implementation Method 2
the first and second vibration detecting units may include acceleration sensors
Implementation Method 3
a controller that determines a contact state of the first chassis based on relative characteristics of a first vibration that is a vibration detected by the first vibration detecting unit with respect to a second vibration that is a vibration detected by the second vibration detecting unit
Implementation Method 4
an opening-closing mechanism that causes the first chassis to be openable and closable relative to the second chassis while mutually coupling portions of the first chassis and the second chassis
Data Source
AI summary
An information processing apparatus, a control method, and a program can more accurately distinguish a vibration added to a chassis from the detected vibration. The information processing apparatus includes a first chassis in which at least one first vibration detecting unit is provided; a second chassis in which at least one second vibration detecting unit is provided, a face of the second chassis overlapping with a face of the first chassis; and a controller. The controller determines a contact state of the first chassis based on relative characteristics of a first vibration that is a vibration detected by the first vibration detecting unit with respect to a second vibration that is a vibration detected by the second vibration detecting unit.