Multi-colored Front Light Illumination for E-reader Status

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Solution Overview

Problem

E-readers and similar devices face challenges in dynamically controlling illumination on their display surfaces, which can affect readability and user experience, especially in varying light conditions or when notifications need to be communicated without altering the content displayed.

Innovation Solution

A computing device with a programmatically controlled front light that can adjust its color, luminosity, and lighting effects independently of the content displayed, using detection of device conditions and notifications to change its state accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If illumination on display surface is controlled to indicate device status, then user experience and readability are improved, but device complexity increases

Engineering Contradiction:
Improveuser experienceVSAvoidillumination control system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The illumination component is designed to serve multiple functions: it provides reading illumination, indicates device status (battery level, connectivity, charging state), and notifies users of important events. By making the illumination system multi-functional, the patent avoids adding separate indicator components, thus improving user experience without proportionally increasing device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The illumination component utilizes color changes to convey different device states and notifications. Different colors represent different statuses (e.g., green for good battery level, red for low battery, yellow for charging). This allows rich information communication through a single illumination component, improving usability while controlling complexity

Inventive Principle:
Principle #32Color changes

2Loss of information

If illumination state is changed to communicate notifications, then information communication is improved, but readability of displayed content may be affected

Engineering Contradiction:
Improvenotification communicationVSAvoiddisplay brightness
Core Design Contradiction:
Loss of informationVSIllumination intensity

Solution Approach 1:

The illumination component is positioned and configured to provide localized illumination effects that communicate notifications without uniformly affecting the entire display surface. The illumination can be directed to specific areas or used in patterns that convey information while maintaining overall display readability and content visibility

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

Notification communication uses periodic or pulsed illumination patterns rather than continuous changes. The illumination can flash, pulse, or cycle in specific patterns to indicate notifications, allowing information communication while maintaining stable illumination levels during reading, thus preserving content readability

Inventive Principle:
Principle #19Periodic 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

Enhances user experience by providing adaptive illumination that communicates device states and notifications without distracting from the content, improving readability and providing visual cues for device status and notifications.

Implementation Method 1

a light emitting component that is optically coupled to the display surface and is operable to emit light onto the display surface

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentUS9983650B2Multi-colored display illumination control for indicating device status and/or activity
Publication Date: 2018.05.29 RAKUTEN KOBO
  • US9983650B2 patent drawing
  • US9983650B2 patent drawing
  • US9983650B2 patent drawing

AI summary

A computing device that includes a programmatically controlled front light. The front light cast light onto a display surface and/or other region of the computing device, for purpose of providing illumination and/or lighting effect.