Hardware Driver Flash Updates for E-Ink Button Inversion

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Solution Overview

Problem

Conventional e-reader devices experience frustrating user experiences due to rapid and unreliable button inversion effects, which are often masked by other display updates or occur at inappropriate times, leading to poor feedback perception.

Innovation Solution

The implementation of hardware device driver capabilities for electrophoretic displays, allowing for flash-style screen updates that separate button inversion effects from other updates, ensuring timely and reliable user interface feedback without relying on software libraries or buffering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If software-based rendering is used to update button colors, then the display can be updated with standard software libraries, but the button inversion effect blends with other updates or occurs at inappropriate times, making it invisible to users

Engineering Contradiction:
Improvesoftware implementation simplicityVSAvoidbutton inversion visibility
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent segments the display update process into separate hardware-controlled operations. Instead of using software libraries to update button colors, the invention uses hardware device driver capabilities to perform flash-style screen updates independently, ensuring the button inversion effect is separated from other display updates and remains visible to users.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a hardware device driver as an intermediary layer between the application software and the electrophoretic display. This hardware intermediary performs flash-style updates that guarantee the button inversion effect is displayed correctly, bridging the gap between software intent and reliable visual feedback.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If hardware device driver capabilities are used for flash-style updates, then button inversion effects are reliably displayed, but the device complexity increases

Engineering Contradiction:
Improvebutton inversion visibilityVSAvoidhardware driver complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent leverages existing hardware device driver capabilities that are already present in electrophoretic display systems for other purposes. By utilizing these existing hardware capabilities for flash-style updates, the invention achieves reliable button inversion display without adding significant new hardware complexity, as the hardware infrastructure is already in place for other display operations.

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

Data Source

PatentUS11380273B2Hardware-leveraged interface display effects
Publication Date: 2022.07.05 AMAZON TECH INC
  • US11380273B2 patent drawing
  • US11380273B2 patent drawing
  • US11380273B2 patent drawing

AI summary

Buttons and other interactive functionality for touchscreen displays of e-book and other electronic media content can be automatically optimized for viewing on client devices, in particular those employing an electrophoretic display. A hardware display driver pushes e-ink material through various predetermined voltage waveforms to consistently accomplish interface effects such as color inversion for a button which is touched on the interface screen. Machine learning schema can assist in determining the appropriate waveforms for interactive elements in the content.