Light-Based Feedback for E-Book Page Turn Latency

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Solution Overview

Problem

Users of electronic book reading devices or similar portable devices may experience frustration due to the slow processing time for page turns, leading to uncertainty about whether their request has been received, as there is no immediate feedback on the status of the page turn operation.

Innovation Solution

The implementation of light-based feedback using a plurality of light sources that illuminate in response to user movements, simulating a page turn by following the motion of the user's finger across the display, providing visual confirmation that the page turn request has been received and is being processed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a page turn request is processed by the device, then the new page is displayed, but the processing time is slow and the user does not receive immediate feedback

Engineering Contradiction:
Improvefeedback reliabilityVSAvoidpage turn processing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements light-based feedback that immediately responds to user touch inputs. When a user touches or swipes on the display, corresponding light sources illuminate to provide real-time visual confirmation that the input has been received and is being processed, resolving the feedback reliability issue during the processing delay

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent introduces light sources as an intermediary element between the user input and the page display system. These light sources serve as a mediator that provides immediate visual response without requiring the actual page turn to complete, bridging the time gap between input and output

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of energy

If the display refresh rate is slow, then power consumption is reduced, but user experience deteriorates due to lack of immediate response

Engineering Contradiction:
Improvepower consumptionVSAvoiduser experience
Core Design Contradiction:
Loss of energyVSEase of operation

Solution Approach 1:

The patent segments the feedback system into separate light sources that can be independently controlled. This allows the system to provide targeted visual feedback only at relevant locations corresponding to user input, rather than refreshing the entire display, thereby maintaining low power consumption while improving user experience

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by illuminating specific light sources only at the location where user input occurs. This localized approach provides immediate visual feedback to confirm input reception without requiring a full display refresh, maintaining energy efficiency while enhancing ease of operation

Inventive Principle:
Principle #3Local quality

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 reduces user frustration by providing immediate feedback that the page turn request has been acknowledged, enhancing the reading experience by simulating a physical page turn, thus making the slow refresh rate of the display less noticeable.

Implementation Method 1

A plurality of light sources are used to provide the light-based feedback based on a location of the movement

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentUS8456320B2Feedback with front light
Publication Date: 2013.06.04 SONY GROUP CORP
  • US8456320B2 patent drawing
  • US8456320B2 patent drawing
  • US8456320B2 patent drawing

AI summary

In one embodiment, a method for providing feedback for a page turn requested on a device is provided. The device may be an electronic book (e-book) device or another device that is configured to display electronic documents. A movement on the display of the device is detected. The method determines that a page turn of the document is being requested based on the movement on the display. The method determines a light-based feedback to indicate that a page turn is being processed. The computing time to process a page turn and display a new page may be slow as perceived by the user. Accordingly, the light-based feedback is used to indicate to the user that the page turn has been received. A plurality of light sources are used to provide the light-based feedback based on a location of the movement. For example, as a user swipes a finger across a display, light sources that follow the motion of the finger are illuminated to simulate a page turn.