Wireless Guitar Pickup Rocking Detection for Power Saving Mode Transition

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Solution Overview

Problem

Existing electric musical instrument systems experience a time lag when transitioning from a power saving state to a normal operation state, causing delays in starting performances due to the time required for power supply stabilization.

Innovation Solution

The system includes a musical sound transmitting means that detects rocking of the instrument using an acceleration sensor to transmit a wakeup signal, allowing the musical sound receiving means to switch from a power saving mode to a normal operation mode before performance, ensuring immediate start-up and minimizing noise through temporary muting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the device enters a power saving state to reduce power consumption, then power consumption is reduced, but a time lag occurs when returning to normal operation mode

Engineering Contradiction:

Improvepower consumptionVSAvoidtime lag during state transition

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The system performs preliminary actions by detecting instrument rocking before performance starts, triggering the wakeup signal transmission in advance. This allows the power saving state to be exited before the actual performance begins, eliminating the time lag during critical performance start-up moments while maintaining power savings during true idle periods.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from the acceleration sensor to monitor instrument state continuously. When rocking is detected, this feedback triggers the wakeup signal transmission, creating a closed-loop system that responds to actual usage conditions and optimizes the transition timing from power saving to normal operation mode.

Inventive Principle:

Principle #23Feedback

2Productivity

If the device monitors performance operations continuously to enable immediate resumption, then performance can start immediately, but power consumption increases during standby

Engineering Contradiction:

Improveperformance start-up speedVSAvoidpower consumption during standby

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The system replaces continuous electronic monitoring with a mechanical sensing approach using an acceleration sensor to detect instrument rocking. This mechanical detection method consumes significantly less power during standby while still enabling immediate performance resumption when the instrument is picked up, as the rocking detection triggers advance wakeup signal transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If the power supply circuit stabilizes completely before outputting sound, then sound quality is improved, but the device cannot start performance immediately upon waking from power saving state

Engineering Contradiction:

Improvesound qualityVSAvoidperformance start-up immediacy

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system performs the power supply stabilization and wakeup preparation in advance when rocking is detected, before the performance actually starts. This preliminary action ensures that by the time performance begins, the power supply is already stabilized and the device is ready to output high-quality sound immediately, resolving the contradiction between sound quality and start-up speed.

Inventive Principle:

Principle #10Preliminary action

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

Enables immediate resumption of performance by detecting preparatory actions, reducing power consumption and noise during state transitions, and simplifying the monitoring circuit for power saving states.

Implementation Method 1

The musical sound transmitting means includes a detecting means which detects rocking of the musical instrument

Methodology Applied

Scientific EffectAcceleration sensing: Accelerometer

Data Source

PatentUS11688373B2Electric musical instrument system, control method and non-transitory computer readable medium t hereof

Publication Date: 2023.06.27 ROLAND CORP

AI summary

Provided are an electric musical instrument system and a control method thereof. The electric musical instrument system includes a musical sound transmitting means and a musical sound receiving means having a first mode and a second mode that consumes less electric power than the first mode. The musical sound transmitting means has a detecting means for detecting rocking of a musical instrument and a transmitting means that transmits an audio signal emitted from the musical instrument to the musical sound receiving means in the first mode and transmits, when detecting rocking of the musical instruments, detected information to the musical sound receiving means in the second mode. The musical sound receiving means has a controlling means that processes the audio signal received in the first mode and cancels the second mode and changes the mode to the first mode when the detected information is received in the second mode.