Remote Control Electronic Paper Display Power Management

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Solution Overview

Problem

Remote control devices for wet-area devices face challenges in efficiently refreshing electronic paper displays without depleting the electrical storage power, leading to incomplete or inappropriate display of setting states for wet-area devices.

Innovation Solution

A remote control device with a generator, electrical storage part, and controller that determines if sufficient power is available before starting the refresh of electronic paper, ensuring the refresh is completed correctly and avoiding power depletion during signal transmission and display-switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If refresh is performed frequently to maintain display quality, then display brightness and clarity are improved, but electrical power consumption increases and may deplete stored power

Engineering Contradiction:
Improvedisplay brightnessVSAvoidelectrical power consumption
Core Design Contradiction:
Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The controller performs a determination action before starting refresh to check if stored electrical power is sufficient. This preliminary check prevents power depletion during refresh by ensuring adequate power reserves are available before initiating the power-consuming display refresh operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts refresh execution based on real-time power status. The controller adapts the refresh operation by conditionally executing it only when power levels are sufficient, making the display system's behavior flexible and responsive to changing power conditions rather than following a fixed refresh schedule.

Inventive Principle:
Principle #15Dynamics

2Reliability

If refresh is performed to eliminate afterimages and maintain display quality, then display reliability is improved, but electrical power in storage may be completely expended

Engineering Contradiction:
Improvedisplay reliabilityVSAvoidelectrical power in storage
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The controller performs a determination action before starting refresh to check if stored electrical power is sufficient. This preliminary check prevents power depletion during refresh by ensuring adequate power reserves are available before initiating the power-consuming display refresh operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by continuously monitoring the electrical power storage level and using this information to control refresh operations. The controller receives feedback about power availability and adjusts refresh execution accordingly, creating a closed-loop control system that prevents power exhaustion while maintaining display reliability.

Inventive Principle:
Principle #23Feedback

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 reliable and timely refresh of electronic paper displays, ensuring the setting information of wet-area devices is displayed accurately and reducing the likelihood of power exhaustion during operations.

Implementation Method 1

a generator (22) that generates electrical power by utilizing energy when the operation button (12) is pressed

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS10697165B2Remote control device
Publication Date: 2020.06.30 TOTO LTD
  • US10697165B2 patent drawing
  • US10697165B2 patent drawing
  • US10697165B2 patent drawing

AI summary

A remote control device according to an embodiment includes an operation button, a generator, an electrical storage part, electronic paper, and a controller. The operation button is for remotely operating a wet-area device. The generator generates electrical power by utilizing energy when the operation button is pressed. The electrical storage part stores the electrical power. The electronic paper displays a setting state of the wet-area device. The controller controls a refresh and a display-switching of the electronic paper by utilizing the electrical power stored in the electrical storage part. The controller starts the refresh in a first state by performing a first determination determining whether or not the electrical power stored in the electrical storage part is in the first state. The electrical power stored in the electrical storage part in the first state is larger than electrical power necessary to complete the refresh.