Audio Haptic Compensation Circuit for Low-Battery Feedback Stability

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Solution Overview

Problem

Haptic feedback in audio devices degrades as battery power decreases, negatively impacting user experience.

Innovation Solution

An audio device and method that compensates haptic effects by adjusting the gain of audio signals based on power measuring results, using a power measuring circuit and haptic compensating circuit to maintain a consistent haptic experience despite varying battery power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If haptic feedback is provided using battery power, then user experience is enhanced, but haptic effect degrades as battery power decreases

Engineering Contradiction:

Improvehaptic effect consistencyVSAvoidbattery power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The haptic compensating circuit dynamically adjusts the gain of the audio signal based on real-time power measuring results. As battery power decreases, the circuit automatically increases the gain to compensate for the reduced haptic effect, maintaining consistent user experience throughout the battery lifecycle.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements a feedback mechanism where the power measuring circuit continuously monitors battery power levels and feeds this information to the haptic compensating circuit. This closed-loop control enables automatic compensation of haptic effect degradation without user intervention.

Inventive Principle:

Principle #23Feedback

2Reliability

If gain of audio signal is adjusted to compensate haptic effect, then haptic effect is maintained, but system complexity increases

Engineering Contradiction:

Improvehaptic effect consistencyVSAvoidcircuit structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The haptic compensating circuit is integrated with the existing audio signal processing path, merging the compensation function into the audio processing pipeline. This approach avoids adding completely separate compensation hardware and leverages existing circuit infrastructure.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The haptic compensating circuit is designed to work with the audio signal processing circuit that already exists in the device. By making the compensation circuit multi-functional (handling both audio processing and haptic compensation), the patent avoids duplicating functionality and reduces overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9419572B2Audio device and audio utilization method having haptic compensation function

Publication Date: 2016.08.16 REALTEK SEMICON CORP

AI summary

The present invention discloses an audio device having haptic compensation function capable of compensating a haptic effect according to a power measuring result and an audio signal. An embodiment of the audio device comprises: an audio signal generating circuit operable to generate an audio signal; a power measuring circuit operable to measure a remaining electric quantity of a power source and thereby generate a power measuring result; and a haptic compensating circuit, coupled to the audio signal generating circuit and the power measuring circuit, operable to adjust a gain of the audio signal or the derived signal thereof according to the power measuring result and thereby output a haptic compensation signal which is used to compensate the haptic effect.